ANNEX X
Annex Xb to Regulation (EU) 2017/2400 is amended as follows:
(1)
in point 2, the following points are added:
‘(54)
‘FCS UUT’ means the fuel cell system (‘FCS’) or representative fuel cell (‘FC’) subsystem to be actually tested.
(55)
‘balance of plant’ or ‘BoP’ means the assembly of all the supporting components and auxiliary systems of an FCS needed to deliver the energy, other than the generating unit itself. These may include transformers, inverters, supporting structures etc., depending on the type of plant.
(56)
‘BoP-component’ or ‘BoPC’ means a component that belongs to a BoP.
(57)
‘air processing sub-system’ or ‘APS’ means an assembly of components that delivers air (oxygen containing media) for reaction in the FCS. The APS can provide air as required to (a) the fuel processing sub-system; (b) thermal management sub-system (TMS); and (c) fuel cell stack-sub-system (FCSS). The APS may include filtration, purification, compression, humidification as well as flow control components.
(58)
‘fuel processing sub-system’ or ‘FPS’ means the assembly of components that chemically or physically converts the supplied fuel to a form suitable for use in the fuel cell stack sub-system. The fuel processing sub-system may include pressure regulation, humidification, and mixing components. The fuel processing sub-system also may be referred to as the fuel processor subsystem or the fuel processor.
(59)
‘thermal management sub-system’ or ‘TMS’ means the assembly of components that provides both thermal and water management for the FCS. The thermal management sub-system may include an accumulator, pump, radiator, and/or condenser. It may also provide water recovery and process humidification functions.
(60)
‘fuel cell stack sub-system’ or ‘FCSS’ means the assembly containing one or more fuel cell stacks in which by means of an electrochemical reaction between fuel and oxidant chemical energy is transferred into electric energy. The FCSS generally includes connections for conducting fuel, oxidant, and exhaust; electrical connections for the power delivered by the stack sub-system; and means for monitoring electrical loads, which are for interface to the FCS. Additionally, the FCSS may incorporate means for conducting additional fluids (e.g., cooling media, inert gas), means for detecting normal and/or abnormal operating conditions, enclosures or pressure vessels, and ventilation systems. The FCSS is also known as a fuel cell module, fuel cell power module, or fuel cell stack assembly.
(61)
‘fuel cell control sub-system’ means a system that controls and/or monitors FCS conditions and automatically responds to vehicle power demands while preventing hazardous conditions and damage to the FCS. The automatic control system generally includes a microprocessor-based device with input and output functions and may provide a diagnostic or troubleshooting function.
(62)
‘power distribution sub-system’ (PDS) means the collection of components that connects the FCSS to the power conditioning system and that converts power for FCS use. The power distribution sub-system may include cables, switches and/or contactors and/or relays, buses, other connectors, and instrumentation. The PDS has only DC power as input.
(63)
‘fuel cell system’ or ‘FCS’ means an energy converter which transforms chemical energy into electric energy via in series connected electrochemical cells, referred to as a fuel cell stack. The FCS includes all necessary balance of plant components to provide fuel, oxygen (e.g. in form of air), cooling and media conditioning to ensure a sound operation of the FC-stacks. Different configurations of FCS are known, also referred to as different types or variants, the relevant types are described in Table 9.
(64)
‘power conditioning system’ or ‘PCS’ means the collection of components that converts the electric energy generated by the fuel cell stack(s) into electricity useful for vehicle purposes. The PCS includes at least a voltage regulator (DC/DC) and/or voltage converters (DC/AC). It might be connected to the cooling media loop. It provides the interface between the FCS and the battery and other electrical vehicle loads.
(65)
‘water treatment sub-system’ or ‘WTS’ means the assembly of components that provides the treatment necessary for the process water used in the fuel cell system (FCS). For example, the WTS may include a demineralizing / deionizing resin bed and instrumentation and may provide water recovery and process humidification functions.
(66)
‘inner cooling loop’ or ‘ICL’ means in FCS with a split of inner (primary) and outer (secondary) cooling loops of BoPC, a closed coolant loop that is connected to the cooling media of the different BoPC and is integrated into the FCS as part of the TMS. Multiple inner cooling loops may exist inside an FCS, e.g. one for the power electronics (PDS, PCS) and one for the FCSS.
(67)
‘outer cooling sub-system’ means the collection of components to exchange waste heat of the FCS, which is stored inside the cooling fluid, with the environment. It may include radiators, pumps, fans and other actuators.
(68)
‘external electric components’ means all electric components that are not part of the FCS and / or are electrically not connected to the DC power between FCSS and PCS. These include the electric machines of the powertrain and the REESS.
(69)
‘relative transition slope’ or ‘RTS’ means a coefficient that express the change rate of the set-point for the electric power output of the FCS. RTS puts into relation the change in time against the upper electric power output of the FCS.
(70)
‘system conditioning operating point’ or ‘SCOP’ means a setpoint for the electrical power output of the system that is suited to condition the FCS in the specified duration of the conditioning phase.
(71)
‘setpoint’ or ‘SP’ means the desired or target value for an essential variable, or process value of a system.
(72)
‘process value’ or ‘process variable’ or ‘PV’ is the current measured value for an essential variable, or process value of a system.’;
(2)
in point 3.1, in Table 1, the following rows are inserted after the row ‘Torque’:
‘ Fuel mass flow
( *1 )
1,0 % of the analyzer reading or 0,5 % of max. calibration( 2 ) whichever is larger
Air/oxidant mass flow ( 1 )
1,0 % of the analyzer reading or 0,5 % of max. calibration( 2 ) whichever is larger
Cooling liquid mass flow
2,5 % of the analyzer reading or 0,1 % of max. calibration( 2 ) whichever is larger
Cooling liquid volume flow
2,5 % of the analyzer reading or 0,1 % of max. calibration( 2 ) whichever is larger
Cooling liquid pressure
0,5 % of the analyzer reading or 0,1 % of max. calibration( 2 ) whichever is larger
Fuel, ambient, air pressure
1 kPa
(3)
in point 3.1, in Table 1, the following row is inserted after the row ‘Temperature’:
‘ Dew point temperature
±2,5 K of the analyzer reading or 1,0 % of max. calibration ( 2 ) whichever is larger’
(4)
the following points are inserted after point 3.2:
‘3.2.1
Data recording for the purpose of FCS-certification
For the purpose of FCS-certification the sampling frequency shall be constant with a sample frequency of at least 10 Hz for all values.
3.2.2
Sign convention of energy and media exchange over UUT-boundary for the purpose of FCS-certification
The flow of media or energy that is leaving the UUT shall have a negative sign and vice-versa.’;
(5)
in point 4.1.3, the following paragraph is added:
‘The voltage for unlimited operating capability shall be a representative voltage range typically applied in real vehicles and shall not necessarily reflect the technically minimum/maximum allowed input voltage to the UUT, and shall not reflect extreme boundary conditions where the operating capabilities of the UUT are limited by high-level vehicle control that is not part of the actual UUT control logics (e.g. reduction of available propulsion torque of UUT due to limitations in the vehicle’s REESS).’;
(6)
the following point is inserted after point 4.1.8.4:
‘4.1.8.5
Installation requirements
The installation of the UUT on the test bed shall be done with an angle of inclination as for installation in the vehicle according to the homologation drawing ±1°. Alternatively, it shall be installed at 0°±1° on the test bed for covering all different installation variants in the vehicle.’;
(7)
point 4.2.2 is amended as follows:
(a)
the second paragraph is replaced by the following:
‘For IEPC with multispeed gearbox the test shall be performed in accordance with the following provisions:
(a)
the test shall be performed for the gear with the gear ratio closest to 1;
(b)
in case the gear ratios of two gears have the same distance to a gear ratio of 1, the test shall be performed for the gear with the higher of those two gears ratios;
(c)
additionally, the test may be performed also for all other forward gears of the IEPC so that a dedicated dataset for each forward gear of the IEPC is determined.’;
(b)
the following paragraph is added:
‘The test of maximum and minimum torque limits shall be performed for each applicable combination of voltage and gear (i.e. either voltage level or forward gear in case of an IEPC with multispeed gearbox) declared in accordance with point 4.2.2.1 by applying the provisions laid down in points 4.2.2.2, 4.2.2.3 and 4.2.2.4 separately to each of those applicable variants.’;
(8)
in point 4.2.2.1, the second sentence is replaced by the following:
‘That declaration shall be separately made for each forward gear of an IEPC with multispeed gearbox measured in accordance with point 4.2.2 and also for each of the two voltage levels V min,Test and V max,Test .’;
(9)
point 4.2.6.2 is replaced by the following:
‘4.2.6.2
Operating points to be measured
For IEPC with multispeed gearbox the setpoints for rotational speed and torque required to be measured during the actual test run shall be determined for each single forward gear in accordance with points 4.2.6.2.1, 4.2.6.2.2 and 4.2.6.2.3.’;
(10)
point 4.2.6.2.1 is amended as follows:
(a)
in the second paragraph, the introductory wording is replaced by the following:
‘In the case of an IEPC with multispeed gearbox where the torque limits were only determined for a single gear in accordance with points 4.2.2(a) and 4.2.2(b), a separate dataset of setpoints for rotational speed of the UUT shall be defined for each single forward gear based on the following provisions:’;
(b)
the following paragraph is added:
‘In the case of an IEPC with multispeed gearbox where the torque limits were determined for each forward gear in accordance with point 4.2.2(c), a separate dataset of setpoints for rotational speed of the UUT shall be defined for each single forward gear based on the following provisions:
(f)
As setpoints for rotational speed of the UUT the same setpoints used for the measurement performed in accordance with point 4.2.2.2 for the respective voltage level and the respective forward gear shall be used.
(g)
The speed setpoint for the maximum 30 minutes continuous torque verification performed in accordance with point 4.2.4.2 for the respective voltage level shall be used in addition to the setpoints defined in subpoint (f) of this point. That rotational speed setpoint shall be converted to the respective setpoint for a specific forward gear by the equation defined in subpoint (e) of this point.
(h)
Further speed setpoints may be defined in addition to the setpoints defined in subpoints (f) and (g).’;
(11)
point 4.2.6.2.2 is amended as follows:
(a)
in the second paragraph, the introductory wording is replaced by the following:
‘In the case of an IEPC with multispeed gearbox where the torque limits were only determined for a single gear in accordance with subpoint (a) of point 4.2.2, a separate dataset of setpoints for torque of the UUT shall be defined for each single forward gear based on the following provisions:’;
(b)
the following paragraph is added:
‘In the case of an IEPC with multispeed gearbox where the torque limits were determined for each forward gear in accordance with point 4.2.2(c), a separate dataset of setpoints for torque of the UUT shall be defined for each single forward gear based on the following provisions:
(i)
At least 10 setpoints for torque of the UUT shall be defined for the measurement for each single forward gear, located both on the positive (i.e. driving) and negative (i.e. braking) torque side by applying the provisions defined in subpoints (a) to (e) of this point for the specific gear.
(j)
All resulting torque setpoints that have an absolute value higher than 10 kNm shall not be required to be measured during the actual test run for the specific gear performed in accordance with point 4.2.6.4.’;
(12)
the following point is inserted after point 4.2.6.2.2:
‘4.2.6.2.3
Requirements for minimum amount of torque setpoints
For each setpoint for rotational speed defined in accordance with point 4.2.6.2.1 the following requirements shall apply:
(a)
In case the number of original torque setpoints defined in accordance with point 4.2.6.2.2 located on the positive (i.e. driving) side with an absolute torque value lower than or equal to 10 kNm is 1, two additional torque setpoints shall be added in accordance with the following provisions:
(i)
If the original torque setpoint is located higher than 6,66 kNm, two new additional torque setpoints shall be defined located equidistant between the original torque setpoint and 0 kNm.
(ii)
If the original torque setpoint is located lower than 6,66 kNm:
—
a new additional torque setpoint at 9,8 kNm shall be defined.
—
if the original torque setpoint is located lower than 3,33 kNm, a new additional torque setpoint located equidistant between the original torque setpoint and 9,8 kNm shall be defined.
—
if the original torque setpoint is located higher than or equal to 3,33 kNm, a new additional torque setpoint located equidistant between the original torque setpoint and 0 kNm shall be defined.
(b)
In case the number of original torque setpoints defined in accordance with point 4.2.6.2.2 located on the positive (i.e. driving) side with an absolute torque value lower than or equal to 10 kNmis 2, the following provisions shall apply:
(i)
If no original torque setpoint located higher than 6,66 kNm exists, a new additional torque setpoint at 9,8 kNm shall be defined.
(ii)
If an original torque setpoint located higher than 6,66 kNm exists and also an original torque setpoint located lower than 3,33 kNm exists, a new additional torque setpoint shall be defined located equidistant between the lowest and highest positive (i.e. driving) original torque setpoints.
(iii)
If an original torque setpoint located higher than 6,66 kNm exists and also an original torque setpoint located higher than or equal to 3,33 kNm exists, a new additional torque setpoint shall be defined located equidistant between the lowest positive (i.e. driving) original torque setpoint and 0 kNm.
(c)
In case the number of original torque setpoints defined in accordance with point 4.2.6.2.2 located on the negative (i.e. braking) side with an absolute torque value lower than or equal to 10 kNm is 1, two additional torque setpoints shall be added in accordance with the following provisions:
(i)
If the original torque setpoint located lower than –6,66 kNm, two new additional torque setpoints shall be defined located equidistant between the original torque setpoint and 0 kNm.
(ii)
If the original torque setpoint is located lower than –6,66 kNm:
—
a new additional torque setpoint at –9,8 kNm shall be defined.
—
if the original torque setpoint is located higher than –3,33 kNm , a new additional torque setpoint shall be defined located equidistant between the original torque setpoint and –9,8 kNm.
—
if the original torque setpoint is located lower than or equal to –3,33 kNm exists, a new additional torque setpoint shall be defined located equidistant between the original torque setpoint and 0 kNm.
(d)
In case the number of original torque setpoints defined in accordance with point 4.2.6.2.2 located on the negative (i.e. braking) side with an absolute torque value lower than or equal to 10 kNmis 2, the following provisions shall apply:
(i)
If no original torque setpoint located lower than –6,66 kNm exists, a new additional torque setpoint at –9,8 kNm shall be defined.
(ii)
If an original torque setpoint located lower than –6,66 kNm exists and also an original torque setpoint located higher than –3,33 kNm exists, a new additional torque setpoint shall be defined located equidistant between the highest and lowest negative (i.e. braking) original torque setpoints.
(iii)
If an original torque setpoint located lower than –6,66 kNm exists and also an original torque setpoint located lower than or equal to –3,33 kNm exists, a new additional torque setpoint shall be defined located equidistant between the highest negative (i.e. braking) original torque setpoint and 0 kNm.’;
(13)
in point 4.2.6.4, the sixth paragraph is replaced by the following:
‘All operating points shall be held for an operating time of at least 5 seconds. During that operating time the rotational speed of the UUT shall be held at the rotational speed setpoint within a tolerance of ±1 % or 20 rpm whatever is larger. Additionally, during that operating time, except for the highest and lowest torque setpoint at each rotational speed setpoint, the average torque shall be held at the torque setpoint within a tolerance of ±1 % of the value of the torque setpoint or ±5 Nm (±2 % of the value of the torque setpoint or ±20 Nm in case of the UUT being an IEPC with either a gearbox and/or a differential included) whatever is larger.’;
(14)
in point 4.3.2, the following paragraph is added:
‘In the case of an IEPC with multispeed gearbox where the torque limits were determined for each forward gear in accordance with point 4.2.2(c), the manipulation step shall be done separately for each forward gear.’;
(15)
point 4.3.3 is amended as follows:
(a)
the introductory wording is replaced by the following:
‘The data for the drag curve determined in accordance with point 4.2.3 shall be modified in accordance with the following provisions considering that drag torque shall have a negative sign in accordance with the sign conventions laid down in point 4.1.9:’;
(b)
in subpoint (4), the following sentence is added:
‘These values of virtual drag torque shall have a negative sign in accordance with the sign conventions defined in point 4.1.9.’;
(16)
point 4.3.4 is amended as follows:
(a)
the introductory wording is replaced by the following:
‘The data for the EPMC determined in accordance with point 4.2.6.4 shall be extended in accordance with the following provisions for each forward gear measured and also for each of the two voltage levels Vmin,Test and Vmax,Test separately:’;
(b)
subpoint (3) is replaced by the following:
‘(3)
If at a specific rotational speed setpoint, including the newly introduced data in accordance with points 1 and 2 of this point, a torque setpoint determined in accordance with point 4.2.6.2.2 (a) to (g) and (i) was omitted for the actual measurement in accordance with point 4.2.6.2.2 (h) or point 4.2.6.2.2(j), a new data point representing the omitted point shall be calculated based on the following provisions:
(a)
Rotational speed: using the value of the omitted setpoint for the rotational speed.
(b)
Torque: using the value of the omitted setpoint for torque.
(c)
Inverter power: calculating a new value by means of linear extrapolation according to the subsequent provisions in this subpoint. The parameters of the least squares linear regression line (i.e. slope and y-intercept) for a specific omitted point shall be determined based on the three actually measured points (i.e. data pairs of torque and inverter power) located closest to the torque value from subpoint (b) for the corresponding rotational speed setpoint. The extrapolated value for the inverter power shall be determined by taking the inverter power of the actually measured point located closest to the torque value from subpoint (b) as a starting point and applying only the slope of the specific least squares linear regression line.
(d)
For positive torque values, extrapolated values of inverter power resulting in values lower than the measured one at the actually measured torque point located closest to the torque value from subpoint (b) shall be set to the inverter power actually measured at the torque point located closest to the torque value from subpoint (b).
(e)
For negative torque values, extrapolated values of inverter power resulting in values higher than the measured one at the actually measured torque point located closest to the torque value from subpoint (b) shall be set to the inverter power actually measured at the torque point located closest to the torque value from subpoint (b).
(f)
Notwithstanding the provisions in subpoints (d) and (e), extrapolated values of inverter power resulting in an efficiency of the total IEPC (i.e. determined based on electrical inverter power and mechanical power at component output shaft) higher than resulting from the two efficiencies set out in point (i) or (ii), as applicable, shall be replaced by a new value of inverter power that reflects exactly the efficiency:
(i)
either the resulting efficiency for this specific operating point when the provisions for determining standard values in accordance with Appendix 9 are applied
(ii)
or the efficiency of the actually measured torque point located closest to the torque value from subpoint (b) decreased by 2 percentage points (e.g. 90,5 %-2 %=88,5 %).’;
(17)
the following points are added after point 6.4.1:
‘7.
Testing of FCS
7.1
Component test procedure for FCS
7.1.1
Fuel quality
The reference fuel as laid down in Table 8 shall be used for the test run performed in accordance with point 7.3.
Table 8
Definition of hydrogen reference fuel
Characteristics
Units
Limits
Test Method
Minimum
Maximum
Hydrogen fuel index
% mole fraction
99,97
( 1 )
Total non-hydrogen gases
μmol/mol
300
Lists of non-hydrogen gases and the specification of each contaminant ( 6 )
Water (H 2 O)
μmol/mol
5
( 5 )
Total hydrocarbons ( 2 ) except methane (C1 equivalent)
μmol/mol
2
( 5 )
Methane (CH 4 )
μmol/mol
100
( 5 )
Oxygen (O 2 )
μmol/mol
5
( 5 )
Helium (He)
μmol/mol
300
( 5 )
Total Nitrogen (N 2 ) and Argon (Ar) ( 2 )
μmol/mol
300
( 5 )
Carbon dioxide (CO 2 )
μmol/mol
2
( 5 )
Carbon monoxide (CO) ( 3 )
μmol/mol
0,2
( 5 )
Total sulfur compounds ( 4 ) (H 2 S basis)
μmol/mol
0,004
( 5 )
Formaldehyde (HCHO)
μmol/mol
0,2
( 5 )
Formic acid (HCOOH)
μmol/mol
0,2
( 5 )
Ammonia (NH 3 )
μmol/mol
0,1
( 5 )
Total halogenated compounds ( 5 )
(Halogenate ion basis)
μmol/mol
0,05
( 5 )
7.2
System boundary of the unit under test and descriptions of specific components
7.2.1
System boundary of the unit under test
The FCS unit under test (‘UUT’) may comprise different BoPCs, the allowed configurations are set out in Table 9. The terminology of the different components is based on the SAE norm J2615. All configurations of FCS have two things in common:
(a)
they are tested and certified without outer cooling sub-system as a standalone power supply unit without external electric components of the vehicle connected;
(b)
all of them comprise the APS.
Passive components that may affect the fuel consumption of the FCS shall either be part of the FCS UUT or be fitted inside the test setup to ensure a comparable vehicle-like operation situation.
The FCS UUT shall be set up on the test bed in accordance with the requirements set out in Table 9 and points 7.2.2 and 7.2.3. The type of FCS shall be determined dependent on the actual configuration of the FCS UUT on the test bed and one of the type identifiers ‘A’, ‘B’, ‘C’ or ‘D’ shall be assigned in accordance with the requirements set out in Table 9.
7.2.2
Fuel Cell Systems without Power Conditioning Sub-system
If PCS is not included, the correction methods laid down in point 7.5 shall be applied to account for the impact of the power loss due to the PCS efficiency.
7.2.3
Fuel Cell Systems excluding power consuming balance of plant components
The correction methods laid down in point 7.5 shall be applied to account for the power consuming components that are mandatory for the operation of the FCS and are not included in the UUT. All excluded power consuming components shall be listed and their power uptake documented in the information document set out in Appendix 7.
Table 9
Definition of different FCS-variants (Types A to D) for certification
Sub-System
Component
Part of FCS
Fitted for certification test
Type_A
Type_B
Type_C
Type_D
Type_A
Type_B
Type_C
Type_D
APS (Air Processing Sub-system)
Inlet particle filter
No
Yes, or test cell equipment ( 8 )
Inlet manifold
No
Yes, or test cell equipment ( 8 )
Intake air charging equipment (e.g. el. turbocharger or compressor)
Yes
Yes
Air flow meter ( 9 )
Yes
Yes
Air inlet duct work
No
Yes, or test cell equipment ( 8 )
Inlet silencer ( 9 )
No
Yes, or test cell equipment ( 8 )
Charge air cooler ( 9 )
Yes
Yes
Humidification ( 9 )
Yes
Yes
TMS
All coolant pump(s)
Yes
No, or partly
Yes
Yes, else test cell equipment ( 7 )
( 8 )
( 11 )
)
Radiator
No
Test cell equipment ( 8 )
Ion-Exchanger ( 9 )
( 12 )
Yes
Yes, or test cell equipment ( 8 )
( 9 )
Fan
No
No
WTS
Water seperator ( 9 )
Yes
Yes
Drain Valve ( 9 )
( 12 )
Yes
Yes
Exhaust manifold
No
Yes, or test cell equipment ( 8 )
Connecting pipes
No
Yes, or test cell equipment ( 8 )
Silencer ( 9 )
No
Yes, or test cell equipment ( 8 )
Tail pipe
No
Yes, or test cell equipment ( 8 )
Exhaust H2-Sensor
No
Yes, or test cell equipment ( 8 )
FPS
Fuel Supply System (FSS)
No
Yes, or test cell equipment ( 8 )
Pressure regulator / Injector
Yes
Yes
Fuel heat exchanger ( 9 )
Yes
Yes
Active Recirculation device (Compressor/Pump) ( 9 )
Yes
Yes
Passive Recirculation Devise (Injector/Ejector) ( 9 )
Yes
Yes
Filters ( 9 )
Yes
Yes
FCSS
( *2 )
Yes
Yes
PDS
Electrical components (e.g. cables, switches, relays) ( *2 )
Yes
Yes ( 10 )
PCS
Voltage regulator (DC/DC) and/or converter (DC/AC)
Yes
No
Yes
No
Yes
Test cell equip-ment ( 7 )
( 8 )
Yes
Test cell equip-ment ( 7 )
( 8 )
fuel cell control sub-system
Processing/control unit
Yes
Yes
Software of specified version
Yes
Yes ( 10 )
7.2.4
Description of specific BoPCs
The TMS and the cooling sub-system may consist of multiple coolant circuits. All those circuits may be divided into an inner and outer part.
7.2.4.1
Inner part of the cooling circuit
Inner part of the cooling circuit consists of all parts of the cooling circuit that are integrated into the FCS and are part of the TMS of the UUT.
7.2.4.2
Outer part of the cooling circuit
All parts of the cooling sub-system that are not part of the UUT are referred to as the outer cooling sub-system, including the heat exchangers that are integrated into the vehicle chassis and might vary dependent on the vehicle type or other parts that are not part of the UUT.
7.3.
Test procedure
7.3.1
Purpose
The purpose of the certification test procedure is to validate performance and capabilities declared by the manufacturer of the FCS, and to measure the fuel consumption / hydrogen mass flow under certain well-defined operating conditions. The aim is to generate reproducible data, suitable as input data for the simulation tool to enable the fuel consumption prediction of the certified vehicle component FCS.
7.3.2
Operation parameters and operating points
The parameters set out in Table 10 shall apply for the purposes of the certification test.
Table 10
Operation Parameters and Operating Points
Name / Description
Mandatory: Y/N
Unit
SCOP
Y
kW
relative transition slope for set-point ramp-up (RTS-UP)
The manufacturer may specify a value for RTS-UP. If no value is specified the default value in accordance with point 7.3.4.6 shall be used.
N
s-1
relative transition slope for set-point ramp-down (RTS-DOWN)
The manufacturer may specify a value for RTS-DOWN. If no value is specified the default value in accordance with point 7.3.4.6 shall be used.
N
s-1
operating points: #01 .. # n op
OP01, lower electrical power-output of FCS at OP # 01 ,
OP n op
upper operating point.
One row in the table per point. To indicate if OPxx is tested during ramp-up or ramp-down, an additional suffix in form of one character shall be added in the information documents, which shall be letter ‘a’ for ascending operating points, and letter ‘d’ for descending operating points.
Y
kW
FCS Type A/C (PCS part of UUT):
Lower voltage level of PCS output U PCS, out, lower at which the FCS can be operated at OPn op without current limitation.
FCS Type B/D (PCS not part of UUT):
U PCS, lower is a DC/DC-requirement specification provided by the manufacturer. The test cell DC/DC shall meet this requirement.
Y
V
FCS Type A/C (PCS part of UUT):
Upper voltage level of PCS output U PCS, out, upper at which the FCS can be operated at OPn op .
FCS Type B/D (PCS not part of UUT):
U PCS, upper is a DC/DC-requirement specification provided by the manufacturer. The test cell DC/DC shall meet this requirement.
Y
V
7.3.3
Methodology
The certification test procedure aims to record static data on a stabilized FCS at a certain number of different operating points. Each operating point shall be specified by its set-point for the electrical FCS power output.
During the certification, the FCS shall be operated in its standard operation conditions, as documented by the manufacturer in accordance with Appendix 7.
The voltage level at the interface between the PCS and the external electric components shall be determined by the lower and upper voltage level as specified in Table 10 to:
U PCS, out = 0,5 * (U PCS, out, upper + U PCS, out, lower )
In case the PCS is not included in the UUT, U PCS, upper and U PCS, lower shall be derived from the requirement specifications for the DC/DC converter as provided by the manufacturer.
The manufacturer shall declare in accordance with Appendix 7 realistic boundary conditions for normal operation of the FCS for in-vehicle usage.
7.3.4
Test procedure description
The entire test procedure shall be performed without interruption and the entire test shall be recorded.
The manufacturer shall specify the operating point (OP) with the lowest (OP01) and highest (OP n op
) electrical FCS power output to be measured as certification test range. That range shall cover the whole span for real world operation in vehicle application.
7.3.4.1
Definition of operating points
The FCS shall be tested on a defined number of OPs, n op
, which shall be equal or greater than 12.
The OP with the lowest (OP01) and highest (OP n op
) electrical FCS power output shall be measured mandatorily.
The remaining number of OP shall be distributed within the certification test range. The distribution of OPs does not need to be equidistant but shall enable a good interpolation of the fuel consumption over the whole certification test range. In regions of elevated non-linear relationship between FCS power output and fuel consumption a smaller step size between set-points is allowed.
The naming convention of the operation set-points shall be defined as:
P@OP01
:
target electrical FCS power output at OP01
P@OPxx
:
target electrical FCS power output at any OP between lowest and highest with the identifier xx running from 02 to ( n op
-1)
P@OPn op
:
target electrical FCS power output at OP n op
The maximum step size between two adjacent OPs, Step-size max , shall be defined in accordance with the following equation:
Step-size max < 0,20 * (P@OPn op – P@OP01)
7.3.4.2
Conditioning phase
Prior to the actual test the system shall be operated at least 60 minutes at a SCOP. That set-point (electrical FCS power output target value) shall lie between 40 % and 60 % of the upper operating point for certification, OP n op
, and shall be defined by the manufacturer.
7.3.4.3
Sequence of operating points
The series shall start from OP01 and shall be continued in ascending order up to OP n op
and then back again to the lowest OP in descending order. The entire duration is dependent on the stabilization time at the individual OPs.
Figure 3 depicts the whole test sequence in a schematic manner.
Figure 3
Sequence of OP
7.3.4.4
Steps to be performed at each operating point
In order to determine the fuel consumption at each OP in a reproducible manner, a sufficient stabilization time at each OP shall be defined by the manufacturer to achieve adequate stability of the system. The stabilization time shall be defined as individual value for each OP to be measured and shall be between t stab,min = 300 - 1 s and t stab,max = 1 800 + 1 s. Both stabilization times for the same OP in the ascending and descending part shall be within a tolerance of 2 seconds. The stabilization time for a measured OP shall start immediately after the ramp from the previous setpoint is completed. The analysis time is required to gain average values avoiding measurement noises and other instationary effects. Therefore, the analysis time shall be set to t anlys = 180 ± 1 s and shall start after the stabilization time. The measured values within that time span shall fulfil the stability criteria set out in point 7.3.4.5 unless the maximum stabilization time of t stab,max = 1 800 + 1 s is applied. After the analysis time, the standby time used for a proper separation from the next load point shall follow and the duration shall be defined as t stb = 10 ± 1 s.
Figure 4 depicts the steps to be performed at each OP.
Figure 4
Steps to be performed at each OP
7.3.4.5
Stability Criteria
To determine the degree of steadiness of the fuel consumption, metered by means of a test cell sensor at the fuel inlet of the FCS (
FPS as specified in Figure 5), a least squares linear regression shall be performed, the independent variable being the time and the dependent variable being the fuel flow, in accordance with points 7.3.6.1 and 7.3.6.2. Based on the regression analysis, the following two stability indicators shall be calculated in accordance with point 7.3.6.3:
(a)
absolute value of the relative slope of the estimate (ARS), which represents the slope;
(b)
relative error of estimate (REE), which represents the degree of fluctuations of the monitored item.
The values for the stability criteria shall be calculated in accordance with point 7.3.6.3. The OP shall be considered as stable if both indicators are below a specific threshold value within the defined analysis time frame. The threshold values for both stabilization indicators ARS and REE shall be calculated in accordance with the threshold values set out in Table 11. For the calculation of the REE, the normalized set power at any OP compared to the highest OP shall be defined as:
Table 11
Threshold values
Indicator:
Threshold Value:
ARS
7,0E-5 sE-1
REE
In case the proof of stability at any OP fails, the test shall be repeated with an enlarged or the maximum stabilization time in accordance with point 7.3.4.4.
7.3.4.6
Transition slope between two operating points
The transition from one set-point to the next shall be executed with a moderate slope. Suitable slopes for up- and down-ramping of the set-point shall be specified by the manufacturer. The objective shall be to set a slope that facilitates a quick stabilization on the subsequent operating point. No restrictions shall apply to the value of the transition slope or to the shape of that slope. In case no transition slope is specified by the manufacturer, the RTS shall be set to +0,002 ±0,0004 s -1 during ramp-up and –0,002 ±0,0004 s -1 during ramp-down.
where:
P
el
:
electrical DC power output of the FCS
:
slope of the transition of one operating point P el, 1
at time t 1
to a following operating point P el, 2
at time t 2
. Where the transition time
is small enough to neglect the effects of non-linearity
P@OPn
op
:
target electrical FCS power output at highest OP
7.3.4.7
Calculation of measured fuel consumption and power output
The electric power output and the corresponding hydrogen consumption rate of the UUT at each individual OP shall be calculated as the arithmetic mean over the analysis time t anlys defined in accordance with point 7.3.4.4. The calculation of the arithmetic means shall be done as follows:
and
where:
P
FCS , avg , p
:
arithmetic mean over n recorded values within t anlys
of the electrical power output P
FCS , i , p
in kW
P
FCS , i , p
:
recorded value of electrical power output with index number i in kW.
This power output is metered UUT-type dependent after the PDS (sensor position: P_el, PDS, as depicted in Figure 5) or PCS (sensor position: P_el, PCS as set out in point 7.4, figure 5)
:
arithmetic mean over n recorded values within t anlys
of the fuel flow
in g/h
:
recorded value of fuel flow with index number i in g/h
i
:
Index of individual recorded data point 1 to n
p
:
Index for ascending (a) or descending (d) path (omitted for OP n op )
n :
:
number of recorded values during the averaging period t anlys
defined in accordance with point 7.3.4.4.
Subsequently, one resulting arithmetic mean for both values P
FCS , avg
and
for each individual OP below OP n op
shall be calculated as the arithmetic mean of the averaged values from the ascending and descending part in accordance with the following equations:
and
where:
P
FCS , avg , a
:
arithmetic mean of the electrical power output during the ascending path determined in accordance with the preceding paragraph in kW
P
FCS , avg , d
:
arithmetic mean of the electrical power output during the descending path determined in accordance with the preceding paragraph in kW
:
arithmetic mean of the fuel flow during the ascending path determined in accordance with the preceding paragraph in g/h
:
arithmetic mean of the fuel flow during the descending path determined in accordance with the preceding paragraph in g/h.
For the OP n op
(upper OP), this averaging step is not applicable since for this OP only one single measurement exists.
7.3.4.8
Correction of the FCS power output to reference conditions
The measured FCS power output P FCS shall be corrected in accordance with the following equation:
with:
where:
:
Electrical power output of FCS at reference conditions in kW
P FCS,avg
:
Electrical power output of FCS in accordance with point 7.3.4.7 in kW
:
Fuel flow in accordance with point 7.3.4.7 in g/h
NCV std,H2
:
Standard net calorific value of hydrogen in accordance with point 5.3.3.1 in MJ/kg
p *
:
Pressure at reference conditions with the numerical value of 0,975 bar
p in
:
Pressure of intake air to the APS of the UUT (p_ A,APS as specified in Figure 5) in bar. The value shall be calculated as the arithmetic mean over the respective analysis time t anlys defined in accordance with point 7.3.4.4 and the resulting value shall be subsequently averaged over the ascending and descending part (except for OP n op
) as prescribed for the signal of fuel consumption in accordance with point 7.3.4.7.
k load
:
Gradient of efficiency determined in accordance with point 7.3.4.8.1 in bar -1 .
7.3.4.8.1
Gradient of efficiency k load
The value of normalized power shall be determined by dividing the value of P FCS,avg of a specific OP by the value of P FCS,avg for OP n op
, both derived in accordance with point 7.3.4.7.
Based on the value of normalized power of a specific OP, the value of k load shall be determined from the corresponding data in Table 12 by means of linear interpolation between the two adjacent data points. In case the value of normalized power is lower than 0,1, the value of k load defined at 0,1 normalized power shall be used.
Table 12
Parameter k load as function of normalized power
Normalized power [-]
k load
0,1
0,3730
0,2
0,1485
0,5
0,0745
0,8
0,0855
1,0
0,1115
7.3.5
Test Conditions
The ambient conditions in the test cell shall fulfil the minimum and maximum criteria set out in Table 13.
Table 13
Ambient and media condition limits during certification test
min value
max value
Ambient pressure
90,0 kPa
102,0 kPa
Ambient temperature
288,0 K
298,0 K
Oxidant (air) inlet pressure
90,0 kPa
102,0 kPa
Oxidant (air) inlet temperature
288,0 K
303,0 K
Relative Humidity, Oxidant (air) supply
45,0 %
80,0 %
7.3.6
Statistics
7.3.6.1
Mean value and standard deviation
The arithmetic mean value shall be calculated as follows:
The standard deviation shall be calculated as follows:
7.3.6.2
Regression analysis
The slope of the regression shall be calculated as follows:
The y intercept of the regression shall be calculated as follows:
The standard error of estimate shall be calculated as follows:
7.3.6.3
Stability criteria
The ARS shall be calculated as follows:
The REE value shall be calculated as follows:
7.4.
Certification test documentation
The relevant data for test reproducibility shall be documented in the information document set out in Appendix 7. The position of different sensors used for testing shall be defined in accordance with the schematic sketch of a representative FCS set out in figure 5.
Figure 5
Schematic sketch of a representative FCS including the position of relevant sensors
7.5
Calculation of effective electrical power output
The electrical power output of fuel cell system at reference conditions,
, determined in accordance with point 7.3.4.8 shall be corrected for the following configurations:
(a)
PCS not being part of the FCS installed for the certification test;
(b)
power consuming balance of plant components not installed for the certification test at all or not installed within the UUT or being externally powered by the test bed infrastructure during the certification test.
7.5.1
Recording of additional values
For each coolant pump not installed for the certification test at all or not installed within the UUT the following values shall be recorded separately:
—
C,TMS,in
volume flow of the coolant upstream of the TMS;
—
p C,TMS,in
pressure of the coolant upstream of the TMS;
—
p C,TMS,out
pressure of the coolant downstream of the TMS.
For each power consuming balance of plant component being externally powered by the test bed infrastructure during the certification test the electrical power uptake, P el,AUX , shall be recorded separately.
In accordance with point 3.2.2 the volume flow and the electrical power uptake shall have a positive algebraic sign.
All recorded values shall be averaged for each individual operating point of the FCS measured in accordance with the method set out in point 7.3.4.7 by applying the same specific averaging period t anlys
in accordance with point 7.3.4.4.
7.5.2
Equations for corrections performed
All following equations shall be evaluated for each individual operating point of the FCS measured in accordance with the method set out in point 7.3.4.7.
In case the PCS not being part of the FCS installed for the certification test, the measured electrical power output at the location PDS in accordance with the schematic sketch of a representative FCS set out in figure 5 shall be corrected for the losses of a generic PCS in accordance with the following equation:
P* el,PCS =
×eta
DC/DC
where:
P* el,PCS
electrical power output at the location PCS in accordance with Figure 5 at reference conditions in kW
P
*
FCS,PDS
electrical power output of fuel cell system at the location PDS in accordance with the schematic sketch of a representative FCS set out in figure 5 at reference conditions determined in accordance with point 7.3.4.8 in kW
eta
DC/DC
generic efficiency factor of DC/DC converter shall be 0.975
For each coolant pump not installed for the certification test at all or not installed within the UUT the electrical power uptake shall be calculated in accordance with the following equation:
P el,Cool = (p
C,TMS,in
- p
C,TMS,out
) ×
C,TMS,in
/ eta
WP,hyd
/ eta
WP,EM
where:
P el,Cool
electrical power uptake of the coolant pump in kW
p
C,TMS,in
pressure of the coolant upstream of the TMS in kPa
p
C,TMS,out
pressure of the coolant downstream of the TMS in kPa
C,TMS,in
volumetric coolant flow upstream of the TMS in m3/s
eta
WP,hyd
generic hydraulic efficiency factor of pump shall be 0,8
eta
WP,EM
generic efficiency factor of electric pump drive shall be 0,8.
The final effective electrical power output of FCS used as input to the simulation tool taking all components consuming additional electric power into account shall be calculated in accordance with the following equation:
P* el,FCS,net = P* el,PCS +
+
+
+
where:
P* el,FCS,net
effective electrical power output of FCS (used as input to the simulation tool) at reference conditions in kW
P* el,PCS
electrical power output at the location PCS in accordance with Figure 5 at reference conditions in kW
P el,AUX
electrical power uptake of balance of plant component not installed for the certification test at all or not installed within the UUT or being externally powered by the test bed infrastructure during the certification test in kW
where the following differentiation shall be applied:
P el,AUX,i
all components connected to the FCS either at the location PDS in accordance with Figure 5 or via a separate DC/DC converter; where i = 1, 2, 3, … maximum number n of such components to be considered
P el,AUX,j
all components connected to the FCS either at the location PCS in accordance with Figure 5 or without a separate DC/DC converter; where j = 1, 2, 3, … maximum number o of such components to be considered
P el,Cool
electrical power uptake of the coolant pump in kW
where the following differentiation shall be applied:
P el,Cool,k
all coolant pumps connected to the FCS either at the location PDS in accordance with Figure 5 or via a separate DC/DC converter; where k = 1, 2, 3, … maximum number p of such components to be considered
P el,Cool,l
all coolant pumps connected to the FCS either at the location PCS in accordance with Figure 5 or without a separate DC/DC converter; where l = 1, 2, 3, … maximum number q of such components to be considered
eta
DC/DC
generic efficiency factor of DC/DC converter shall be 0,975.
7.5.3
Input to the simulation tool
The values of effective electrical power output P *
el,FCS,net determined in accordance with point 7.5.2 multiplied by -1 and absolute values of the fuel flow determined in accordance with point 7.3.4.7 shall be used as input to the simulation tool.”;
(18)
Appendix 7 is replaced by the following:
‘Appendix 7
Information document for FCS
Communication concerning:
—
granting ( 13 )
—
extension ( 13 )
—
refusal ( 13 )
—
withdrawal ( 13 )
Administration stamp
of a certificate on CO 2 emission and fuel consumption related properties of an electric machine system IEPC / IHPC Type 1 / battery system / capacitor system in accordance / FCS / with Commission Regulation (EU) 2017/2400.
Commission Regulation (EU) 2017/2400 as applicable on [date]
Certification number:
Hash:
Reason for extension:
Information document No:
Issue:
Date of issue:
Date of Amendment:
pursuant to …
FCS type / family (if applicable):
0.
GENERAL
0.1.
Name and address of manufacturer:
0.2.
Make (trade name of manufacturer):
0.3.
FCS type:
0.4.
FCS family:
0.5.
FCS type as separate technical unit / FCS family as separate technical unit:
0.6.
Commercial names (if available):
0.7.
Means of identification of model, if marked on the FCS:
0.8.
In the case of components and separate technical units, location and method of affixing of the EC approval mark:
0.9.
Names and addresses of assembly plants:
0.10.
Name and address of the manufacturer's representative:
PART 1
ESSENTIAL CHARACTERISTICS OF THE (PARENT) FCS AND THE FCS TYPES WITHIN A FCS FAMILY
Parent FCS
Family members
or FCS type
#1
#2
#3
…
1.
General:
1.1.
Upper power of FCS (specified upper electric power in real world operation): … kW
1.2.
Weight of FCS (including all parts of UUT): … kg
1.3.
Gross outer dimension of FCS (length, width and height): … mm
1.4.
U out range at the UUT interface, either PDS, out or PCS, out (min/max): … V
1.5.
I out range at the UUT interface, either PDS, out or PCS, out (min/max): … A
1.6.
Output voltage range of PCS (min/max) ( *3 ) : … V
1.7.
Type of FCS regarding test setup ( *4 ) (A, B, C, D): …
2.
APS:
2.1.
Air Compressor
2.1.1.
Make(s), type(s) …
2.1.2.
Power uptake in certification test range (min/max) … kW
2.2.
Air humidification device ( *3 )
2.2.1.
Make(s), type(s): …
2.2.2.
Humidity exchange membrane, make(s), type(s): …
3.
TMS:
3.1.
Cooling media of inner cooling liquid
3.1.1.
Make(s), type(s) …
3.1.2.
Specific heat capacity @345 K: … J/(kg·K)
3.1.3.
Density @345 K: … kg/l
4.
WTS:
4.1.
Deionization unit
4.1.1.
Make(s), type(s) …
4.1.2.
Ion-conductivity cooling media (nominal/max) … mS/cm
5.
FPS:
5.1.
Fuel injector or combination of injector/ejector:
5.1.1.
Make(s), type(s): …
5.1.2.
Number of injectors: …
5.2.
Anode recirculation blower ( *3 ) …
5.2.1.
Make(s), type(s) ( *3 ) : …
6.
FCSS:
6.1.
FC Stack(s):
6.1.1.
Make(s), type(s): …
6.1.2.
Number of stacks: …
6.1.3.
Cell number of ejach stack: …
6.1.4.
Cell surface area of each stack: … cm 2
6.1.5.
Setpoint of the reference current of the stack: … A
6.1.6.
Reference condition ( *5 ) , temperature
: … K
6.1.7.
Reference condition ( *5 ) , pressure p
A , FCSS , in
: … kPa
6.1.8.
Reference condition ( *5 ) , anode stoichiometry ν
fuel
…
6.1.9.
Reference condition ( *5 ) , cathode stoichiometry ν
Air
…
6.1.10.
Stack voltage at reference condition of each stack: … V
6.1.11.
Make(s), Type(s) of membrane electrode assemblies (MEA): …
7.
Power Distribution Sub-System (PDS):
7.1.
Power plug at the interface to FCSS ( *3 )
7.1.1.
Make(s), type(s): …
8.
Power Conditioning Sub-System (PCS):
8.1.
DC/DC ( *3 )
8.1.1.
Make(s), type(s): …
8.1.2.
Voltage range inlet / primary side (min/max): … V
8.1.3.
Voltage range inlet / secondary side (min/max): … V
9.
Fuel Cell Control Sub-System:
9.1.
Firmware, Version & Build Number: …
9.2.
Control Unit Hardware, Make & Type: …
LIST OF ATTACHMENTS
No:
Description:
Date of issue:
1
Information on FCS test conditions …
DD-MMM-YYYY
2
Information on operation boundary conditions …
DD-MMM-YYYY
3
Information on FCS certification test results …
DD-MMM-YYYY
Attachment 1 to FCS information document
Information on FCS test conditions:
value and unit
Ambient pressure (absolute)
XYZ.0
kPa
Ambient temperature
XYZ.0
K
Oxidant (Air) inlet temperature
XYZ.0
K
Oxidant (Air) inlet pressure (absolute)
XYZ.0
kPa
Relative Humidity, oxidant / air supply
XY.0
%
Cooling media of inner circuit: Make: ___________, Type: ______________
Density of cooling media of inner circuit @345 K
XY.0
kg/l
Specific heat capacity of cooling media in the inner cooling circuit @345 K
XYZ.0
J/(kg·K)
SCOP:
XYZ.0
kW
Operating point #01 (OP01):
XYZ.0
kW
Operating point #02 (OP02):
XYZ.0
kW
Operating point #xx (OPxx, OP between OP02 and OP n op
):
XYZ.0
kW
Operating point #n op (OP n op
, highest operating point):
XYZ.0
kW
FCS Type A/C (PCS part of UUT):
Lower voltage level of PCS output UPCS,out,lower at which the FCS can be operated at OPnop without current limitation.
FCS Type B/D (PCS not part of UUT):
UPCS, lower is a DC/DC-requirement specification
XYZ.0
V
FCS Type A/C (PCS part of UUT):
Upper voltage level of PCS output UPCS,out,upper at which the FCS can be operated at OPnop.
FCS Type B/D (PCS not part of UUT):
UPCS, upper is a DC/DC-requirement specification
XYZ.0
V
Optional, operation condition related parameters:
relative transition slope for set-point ramp-up (RTS-UP)
(it is an approximate value for orientation, the manufacturer may specify a range around this number)
XYZ.0
s -1
relative transition slope for set-point ramp-down (RTS-DOWN)
(it is an approximate value for orientation, the manufacturer may specify a range around this number)
XYZ.0
s -1
Attachment 2 to FCS information document
Boundary conditions for FCS operation in vehicles as declared by the manufacturer:
This table is adopted / completed by the manufacturer according to their operation specification for FCS operation inside a vehicle. The specifications in the following table are mandatory:
OP#
parameter
lower
upper
01
Ambient Temperature
XYZ.0
K
XYZ.0
K
…
XYZ.0
K
XYZ.0
K
n op
XYZ.0
K
XYZ.0
K
01
Ambient Pressure
XYZ.0
Pa
XYZ.0
Pa
…
XYZ.0
Pa
XYZ.0
Pa
n op
XYZ.0
Pa
XYZ.0
Pa
01
Ambient Humidity
XYZ.0
%
XYZ.0
%
…
XYZ.0
%
XYZ.0
%
n op
XYZ.0
%
XYZ.0
%
01
Cooling Liquid Temperature FCSS Inlet
Label according to Figure 5: T_C,in
with the additional suffix FCSS
XYZ.0
K
XYZ.0
K
…
XYZ.0
K
XYZ.0
K
n op
XYZ.0
K
XYZ.0
K
01
Cooling Liquid Temperature FCSS Outlet
XYZ.0
K
XYZ.0
K
…
XYZ.0
K
XYZ.0
K
n op
XYZ.0
K
XYZ.0
K
01
Further boundary conditions for operation inside a vehicle
XYZ.0
Unit
XYZ.0
Unit
…
XYZ.0
Unit
XYZ.0
Unit
n op
XYZ.0
Unit
XYZ.0
Unit
Attachment 3 to FCS information document
Table 1
Information on FCS certification test results in form of arithmetic mean values
OPXXa: ascending
OPXXd: descending
01: Duration / s
02: ARS / s -1
03: REE / -
04: SP el. power demand for FCS at the interface PDS/PCS
(*)
/ kW
05: SP DC current of FCS at the interface PDS/PCS
(*)
/ A
06: PV el. power output of the FCS at the UUT interface (i.e. either PDS or PCS) / kW
07: PV DC current at the interface UUT
interface (i.e. either PDS or PCS) / A
reserved
09: PV voltage at the UUT interface
(i.e. either PDS or PCS) / V
10: Mass flow of fuel / g/h
…
SCOP
OP01a
OP02a
OP03a
OP..
OP n op
(***)
OP n op -1d
OP n op -2d
OP n op -3d
OP..d
OP01d
OPXXa: ascending
OPXXd: descending
11: Volume flow of fuel
(**)
/ l/min
12: Fuel pressure at FCS inlet / kPa
13: Fuel pressure at FCSS inlet
(*)
/ kPa
14: Fuel temperature at FCSS inlet
(*)
/ K
15: Mass flow of air / g/h
16: Volume flow of air (**) / l/min
17: Air pressure at APS inlet / kPa
18: Air temperature at APS inlet / K
19: Air relative humidity at APS inlet / %
20: Mass flow of cooling media at TMS
inlet / g/h
…
SCOP
OP01a
OP02a
OP03a
OP..
OP n op
(***)
OP n op -1d
OP n op -2d
OP n op -3d
OP..d
OP01d
OPXXa: ascending
OPXXd: descending
21: Volume flow of cooling media at TMS inlet
(**)
/ l/h
22: Temperature of cooling media at TMS inlet / K
23: Temperature of cooling media at TMS outlet / K
24: Electric power provided to the FCS from the test cell at PDS / kW
25: Electric power provided to the FCS from the test cell at PCS / kW
SCOP
OP01a
OP02a
OP03a
OP..
OP n op
(***)
OP n op -1d
OP n op -2d
OP n op -3d
OP..d
OP01d
(*)
if applicable / accessible
(**)
if mass flow of media needs to be calculated based on volume flow and density
(***)
n op
: number of different operating points, OPn op is the upper OP during certification as specified in point 7.3.4.1
Explanations regarding the table in attachment 3 to FCS information document
The positions of sensors are specified in a schematic manner in figure 5. All values - except for the duration, ARS and REE - are arithmetic mean values at each OP determined over the analysis time, t anlys , defined in accordance with point 7.3.4.4 (i.e. before the averaging step of ascending and descending). For the SCOP the averaging time frame shall be defined by the same time frame length as for the analysis time and shall be located just before the transition to the subsequent OP01a.
The minimum precision requirements of sensors are indicated by a type classification in the respective column in Table 2. The following types are distinguished where type I has the highest precision and type III the lowest:
Type I:
accuracy according to Table 1 of this Annex;
Type II:
accuracy of integrated and accessible sensors (i.e. all FCS integrated automotive sensors are of type II);
Type III:
not applicable or precision not specified: precision according to best practice / common sense.
If the same value is measured by more than one sensor only the numbers determined by the sensor with the higher precision shall be documented. If in the comment column the phrases “if applicable” / “if accessible” are set out, no additional sensors need to be installed.
Table 2
Accuracy requirements of sensors
#
Description
Unit
Type
Comment
01
Duration
s
III
time period in between transition periods of the power/current setpoint
02
ARS
s -1
III
refer to point 7.3.4.5 of this Annex:
Absolute value of the Relative Slope
03
REE
-
III
refer to point 7.3.4.5 of this Annex:
Relative error of estimate
04
SP el. power demand for FCS at the UUT interface
kW
III
setpoint, if applicable
(variant dependent: either PDS,out or PCS,out)
(in case P el is a SP)
05
SP DC current of FCS at the UUT interface
A
III
setpoint, if applicable
(variant dependent: either PDS,out or PCS,out)
(in case I FCS is a SP)
06
PV el. power output of the FCS at the UUT interface
kW
I
process value,
(variant dependent: either PDS,out or PCS,out)
label in Figure 5: P_el, PDS or P_el,PCS
if not metered directly, but calculated on the basis of U and I values, the U and I sensors shall comply with sensors type I
07
PV DC current at the UUT interface
A
I
process value
(variant dependent: either PDS,out or PCS,out)
08
reserved
09
PV voltage at the UUT interface
V
I
process value
(variant dependent: either PDS,out or PCS,out)
10
Mass flow of fuel
g/h
I/III
either measured (I) or calculated (III) via density and volume flow, label in Figure 5:
_F, FPS
11
Volume flow of fuel
l/min
I
if mass flow of media needs to be calculated based on volume flow and density otherwise it can be omitted, label in Figure 5:
_F, FPS
12
Fuel pressure at FCS inlet
kPa
I
at interface test cell / UUT
13
Fuel pressure at FCSS inlet
kPa
II
if accessible
14
Fuel temperature at FCSS inlet
K
II
if accessible, else fuel temperature at the FCS inlet
15
Mass flow of air
g/h
I
either measured or calculated via density and volume flow (label in Figure 5:
_A, APS)
16
Volume flow of air
l/min
I
if mass flow of media needs to be calculated based on volume flow and density otherwise it can be omitted
(label in Figure 5:
_A, APS)
17
Air pressure at APS inlet
kPa
I
label in Figure 5: p_A, APS
18
Air temperature at APS inlet
K
I
label in Figure 5: T_A, APS
19
Air relative humidity at APS inlet
%
II
relative humidity at FCS inlet / FCS/APS interface;
label in Figure 5: RH_A
20
Mass flow of cooling media at TMS
g/h
II
if not metered, it is calculated via volume flow and density, label in Figure 5:
_C, TMS
21
Volume flow of cooling media at TMS
l/h
II
if mass flow of media needs to be calculated based on volume flow and density otherwise it can be omitted label in Figure 5:
_C, TMS
22
Temperature of cooling media at TMS inlet
K
II
label in Figure 5: T_C, in_TMS
23
Temperature of cooling media at TMS outlet
K
II
label in Figure 5: T_C, out_TMS
24
Electric power provided to the FCS from the test cell at PDS
kW
I
the sum of all electric power supplied from the test cell connected to the FCS either at the location PDS in accordance with Figure 5 or via a separate DC/DC converter
25
Electric power provided to the FCS from the test cell at PCS
kW
I
the sum of all electric power supplied from the test cell connected to the FCS either at the location PCS in accordance with Figure 5 or without a separate DC/DC converter
…
…
…
If other values are necessary in order to ensure a reproducibility of the test, those values shall be added as well including if the cooling is in multiple circuits, in which case each cooling flow shall be documented separately.
’;
(19)
Appendix 8 is amended as follows:
(a)
the fifth indent is replaced by the following:
‘—
Step 5: The overload characteristics shall be determined from the data generated in accordance with step 2. The overload torque and the corresponding rotational speed shall be calculated as average values over the speed range where the power is equal or greater than 90 % of the maximum power. In case the resulting overload torque is lower than continuous torque, the overload torque shall be set to the 30 minutes continuous torque resulting from step 4. The overload duration t0_maxP shall be defined by the whole duration of the test run performed in accordance with step 2 multiplied by a factor of 0,25.’;
(b)
in the sixth indent, point (e)(iii), the equation:
‘
’
is replaced by the following:
‘
’;
(20)
Appendix 9 is amended as follows:
(a)
in point (2)(a), the equation
‘T gbx,l,in (n in , T in , gear) = T d0 + T d1000 × n in / 1000 rpm + f T,gear × T in
’
is replaced by the following:
‘T gbx,l,in (n in , T in , gear) = T d0 + T d1000 ×n in / 1000 rpm + f T,gear ×|T in |’;
(b)
in point (3)(a), the equation:
‘T diff , l,in (T in ) = η diff × T diff,d0 / i diff + (1- η diff ) × T in
’
is replaced by the following:
‘T diff , l,in (T in ) = η diff ×T diff,d0 / i diff + (1 - η diff ) ×|T in |’;
(21)
Appendix 10 is amended as follows:
(a)
point (1) is amended as follows:
(a)
point (b) is replaced by the following:
‘(b)
The rated capacity shall be the value in Ah based on the capacity of single cells indicated on the datasheet from the cell manufacturer considering the arrangement of the single cells in parallel and series configuration. The resulting value for total capacity shall be multiplied by a factor of 0,9.’;
(b)
point (d) is replaced by the following:
‘(d)
The DCIR shall be determined in accordance with the following provisions:
(i)
For HPBS in accordance with subpoint (a) the different values of DCIR shall be calculated by dividing the specific resistance of in [mOhm × Ah] as set out in the following table by the rated capacity in Ah as defined in accordance with subpoint (b) and multiplying the resulting value by the number of cells connected in series as indicated in accordance with Appendix 2, point 1.3.2, of Annex 6 to UN Regulation No 100:
DCIR
Specific resistance in [mOhm × Ah]
DCIR R I2
40
DCIR R I10
45
DCIR R I20
50
(ii)
For HEBS in accordance with subpoint (a) the different values of DCIR shall be calculated by dividing the specific resistance in [mOhm × Ah] in the following table by the rated capacity in Ah as defined in accordance with subpoint (b) and multiplying the resulting value by the number of cells connected in series as indicated in accordance with Appendix 2, point 1.3.2, of Annex 6 to UN Regulation No 100:
DCIR
Specific resistance in [mOhm × Ah]
DCIR R I2
210
DCIR R I10
240
DCIR R I20
270
DCIR R I120
390’
(c)
points (e)(i) and (e)(ii) are replaced by the following:
‘(i)
For HPBS in accordance with subpoint (a) the values for maximum charging and maximum discharging current dependent on the SOC level shall be set to the respective current in A corresponding to the C-rates (nC) set out in the following table:
SOC [%]
C-rate (nC) for maximum charging current
C-rate (nC) for maximum discharging current
0
9,0
0,0
30
9,0
50,0
80
9,0
50,0
100
0,0
50,0
(ii)
For HEBS in accordance with subpoint (a) the values for maximum charging and maximum discharging current dependent on the SOC level shall be set to the respective current in A corresponding to the C-rates (nC) set out in the following table:
SOC [%]
C-rate (nC) for maximum charging current
C-rate (nC) for maximum discharging current
0
0,9
0,0
30
0,9
5,0
80
0,9
5,0
100
0,0
5,0 ’
(b)
point (2)(d) is replaced by the following:
‘The internal resistance shall be determined in accordance with the following equation:
where:
R I,Cap
=
Internal resistance [Ohm]
R I,ref
=
Reference for internal resistance with a numeric value of 0,00375 [Ohm]
V max,Cap
=
Maximum voltage as defined in accordance with subpoint (b) above [V]
V min,Cap
=
Minimum voltage as defined in accordance with subpoint (c) above [V]
V ref
=
Reference for maximum voltage with a numeric value of 2,7 [V]
C ref
=
Reference for capacitance with a numeric value of 3 000 [F]
C Cap
=
Capacitance as defined in accordance with subpoint (a) above [F]
n ser
=
number of cells connected in series as defined in accordance with subpoint (a) above [-]’;
(22)
Appendix 11 is replaced by the following:
‘Appendix 11
Standard values for FCS
The following steps shall be performed to generate the input data for the FCS based on standard values:
(a)
The input data for the FCS required in accordance with Appendix 15 shall be determined based on the maximum electrical power output of the FCS in accordance with Appendix 1, point 4.6., of Annex 6 to UN Regulation No 100.
(b)
In case that more than one FCS are installed in the vehicle, the parameter in accordance with subpoint (a) shall be declared for each individual FCS separately and also the determination of input data shall be done for each individual FCS separately in accordance with the corresponding required input defined in Table 11a of Annex III to this Regulation).
(c)
The values of fuel mass flow as a function of electrical power output shall be calculated based on the generic efficiency values in accordance with the following table:
Normalized power [-]
Efficiency [%]
0,01
3,67
0,05
18,33
0,10
36,67
0,125
45,83
0,15
55,00
0,20
54,12
0,25
53,24
0,30
52,35
0,35
51,47
0,40
50,59
0,45
49,71
0,50
48,82
0,55
47,94
0,60
47,06
0,65
46,18
0,70
45,29
0,75
44,41
0,80
43,53
0,85
42,65
0,90
41,76
0,95
40,88
1,000
40,00
(d)
The values of fuel mass flow and the corresponding electrical power output shall be determined in accordance with the following equation:
where:
=
fuel mass flow [g/h]
P rated,el
=
maximum electrical power output of the FCS as defined in accordance with subpoint (a) above [kW]
P norm,i
=
normalized electrical power output of the FCS for all values i as defined in accordance with subpoint (c) above [-]
eta i
=
efficiency of the FCS for all values i as defined in accordance with subpoint (c) above corresponding to P norm,i [%]
NCV std,H2
=
standard net calorific value of hydrogen in accordance with point 5.3.3.1 [MJ/kg]
where:
P FCS,el,i
=
electrical power output of the FCS [kW]
P rated,el
=
maximum electrical power output of the FCS as defined in accordance with subpoint (a) above [kW]
P norm,i
=
normalized electrical power output of the FCS for all values i as defined in accordance with subpoint (c) above [-]
’;
(23)
in Appendix 12 the following points are added:
‘5.
Fuel cell systems
5.1
Every FCS shall be manufactured to conform to the approved type with regard to the description as given in the certificate and its annexes. The conformity of the certified CO 2 emissions and fuel consumption related properties procedures shall comply with those set out in Article 31 of Regulation (EU) 2018/858.
5.2
Conformity of the certified CO 2 emissions and fuel consumption related properties shall be checked on the basis of the description in the certificates and information packages annexed thereto as set out in Appendix 7.
5.3
Conformity of the certified CO 2 emissions and fuel consumption related properties shall be assessed in accordance with the specific conditions laid down in point 5.
5.4
The component manufacturer shall test annually the number of units indicated in Table 4 based on the total annual production number of fuel cell systems produced by the component manufacturer. For the purpose of establishing the annual production numbers, only fuel cell systems which fall under the requirements of this Regulation and for which no standard values were used shall be considered.
Table 4
Sample size conformity testing
Number of relevant fuel cell systems produced the year before ( *7 )
Annual number of tests
0 – 3 000
1 test every 3 years ( *6 )
3 001 – 6 000
1 test every 2 years ( *6 )
6 001 – 12 000
1
12 001 – 30 000
2
30 001 – 60 000
3
60 001 – 90 000
4
90 001 – 120 000
5
120 001 – 150 000
6
> 150 000
7
5.5
The approval authority shall identify together with the component manufacturer the type(s) of fuel cell systems to be tested for the conformity of the certified CO 2 emissions and fuel consumption related properties. The approval authority shall ensure that the selected type(s) of fuel cell systems is manufactured to the same standards as for serial production.
5.6
If the result of a test performed in accordance with point 5.7 does not fulfill the pass criteria set out in point 5.7.4., three additional units from the same type shall be tested. If any of them fails, Article 23 shall apply.
5.7
Conformity of production of testing of fuel cell systems
5.7.1
Boundaries conditions
All boundary conditions laid down in this Annex for the certification testing shall apply unless stated otherwise in this paragraph.
The measurement equipment specifications defined in accordance with point 3.1 do not need to be fulfilled for CoP testing.
The CoP testing may be conducted with regular market fuel. However, at the manufacturer's request, the reference fuel set out in point 7.1.1 may be used.
5.7.2
Testrun
The test procedure shall be performed in accordance with point 7.3.4 following all principles set out therein but with a reduced number of OPs to be measured. The manufacturer may as an alternative option select to measure the complete set of OP from the original component certification following the exact same provisions and boundary conditions as applied during the original component certification and documented in the information document set out in Appendix 7.
The target OPs to be measured shall be defined by the normalized set power, P@OPxx norm , calculated in accordance with the following equation:
where:
P@OPxx
:
target electrical FCS power output at a certain OP between lowest and highest with the identifier xx running from 01 to n op
P@OPn op
:
target electrical FCS power output at highest OP
The target OPs to be measured for CoP testing shall be selected out of the target OPs from the original component certification defined in accordance with point 7.3.4.1 and recorded in the information document set out in Appendix 7 during component certification. The target OPs to be selected shall be defined by the normalized set power values in accordance with the following points (a) to (e):
(a)
OP next lower or equal to 0,15
In case there is no OP lower or equal to 0.15 existing, the lowest OP out of the target OPs from the original component certification shall be used.
(b)
OP next higher to 0,15
In case this OP is already selected for CoP under point (a), the next highest OP out of the target OPs from the original component certification shall be used.
(c)
OP closest to 0,4
In case the next lower and next higher OP are exactly equidistant to 0.4, the next lower OP shall be used for CoP testing.
In case this OP is already selected for CoP under point (b), the next highest OP out of the target OPs from the original component certification shall be used.
(d)
OP next lower to 0,7
In case this OP is selected for CoP under point (c), the next highest OP out of the target OPs from the original component certification shall be used.
(e)
OP equal to 1,0
In case this OP is already selected for CoP under point (d), it shall be measured only once.
With the target OPs to be measured for CoP testing, the provisions of point 7.3.4 including all its subpoints shall apply in order to determine the values of P
FCS , avg
and
. In that context, target OPs to be measured with the normalized set power of 1 shall be considered as OP n op
and only measured once whereas all other target OPs shall be measured twice (i.e. in the ascending and descending path).
5.7.3
Post-processing of results
All values of of P
FCS , avg
determined in accordance with point 5.7.2 shall be processed in accordance with point 7.5 of this Annex to derive the values of final effective electrical power output P* el,FCS,net .
Subsequently, the resulting values of P* el,FCS,net and
determined in accordance with point 5.7.2 shall be corrected for uncertainty deviation of CoP measurement equipment in accordance with points (a) to (f):
(a)
The difference in measurement equipment uncertainty in percent between component type approval and CoP testing in accordance with this Appendix shall be calculated for the measurement systems used for current, voltage and fuel mass flow.
(b)
The difference in uncertainty in percent referred to in subpoint (a) shall be calculated for both, the analyzer reading and the maximum calibration value defined in accordance with point 3.1 of this Annex.
(c)
The total difference in uncertainty for electrical power shall be calculated in accordance with the following equation:
where:
Δu U,max calib
difference in uncertainty for maximum calibration value for voltage measurement [%]
Δu U,value
difference in uncertainty for analyzer reading for voltage measurement [%]
Δu I,max calib
difference in uncertainty for maximum calibration value for current measurement [%]
Δu I,value
difference in uncertainty for analyzer reading for current measurement [%]
(d)
The total difference in uncertainty for fuel mass flow shall be calculated in accordance with the following equation:
where:
difference in uncertainty for maximum calibration value for fuel mass flow measurement [%]
difference in uncertainty for analyzer reading for fuel mass flow measurement [%]
(e)
All values of P*el,FCS,net determined in accordance with point 7.5 of this Annex shall be corrected in accordance with the following equation:
P* el,CoP = P* el,FCS,net (1 - Δu P,el,CoP )
where:
Δu P,el,CoP
total difference in uncertainty for electrical power in accordance with subpoint (c)
(f)
All values of and
determined in accordance with point 7.3.4.7 of this Annex shall be corrected in accordance with the following equation: m F,CoP =
(1 +
)
where:
total difference in uncertainty for fuel mass flow in accordance with subpoint (d)
5.7.4
Evaluation of results
For each target OP for CoP testing, the specific fuel consumption, SFC CoP , shall be calculated from the corresponding values of P* el,CoP and m F,CoP determined in accordance with point 5.7.3 by dividing m F,CoP by P* el,CoP .
The type approved specific fuel consumption, SFC TA , shall be calculated from the data of the original component certification for P* el,FCS,net determined in accordance with point 7.5 of this Annex and
determined in accordance with point 7.3.4.7 of this Annex for all target OPs from the original component certification corresponding to the ones applied for CoP. The values of SFC TA shall be calculated by dividing of
by the corresponding value of P* el,FCS,net for each target OP.
Subsequently, the absolute relative deviation, ARD, for each target OP for CoP testing shall be calculated in accordance with the following equation:
ARD =
The conformity of the certified CO 2 emissions and fuel consumption related properties test is passed when the average of the ARD determined out of the individual ARD values of each target OP for CoP testing is smaller than 0,08.’;
(24)
in Appendix 13, the following points are added:
‘2.
Fuel Cell Systems
2.1.
General
A family of fuel cell systems (FCS) is characterized by design and performance parameters. Those shall be common to all members within the family. The component or vehicle manufacturer may decide which FCS belong to a family, if the membership criteria listed in this Appendix are fulfilled. The related family shall be approved by the approval authority. The manufacturer shall provide to the approval authority the appropriate information relating to the members of the family.
2.2.
Special cases
In some cases, there may be interaction between parameters. That shall be taken into consideration to ensure that FCS with similar characteristics are included within the same family. Those cases shall be identified by the manufacturer and notified to the approval authority. It shall then be considered as a criterion for creating a new family of FCS.
In case of devices or features, which are not listed in point 2.5 of this Appendix and which have a strong influence on the level of performance and/or the electric power generation, the respective devices or features shall be identified by the manufacturer based on good engineering practice, and shall be notified to the approval authority. It shall then be considered as a criterion for creating a new family of FCS.
2.3.
Family concept
The family concept defines criteria and parameters enabling the manufacturer to group FCS into families with similar or equal data relevant for fuel / hydrogen consumption.
2.4.
Special provisions regarding representativeness
The approval authority may conclude that the performance parameters and the fuel / hydrogen consumption of the family of FCS is best characterized by additional testing. In this case, the manufacturer shall submit the appropriate information to determine the FCS within the family likely to best represent the family. The approval authority may, based on that information, also conclude that the manufacturer is required to create a new family of FCS consisting of less members in order to be more representative.
If members within a family incorporate other features which may be considered to affect the performance parameters and/or the fuel / hydrogen consumption, those features shall also be identified and considered in the selection of the parent.
2.5.
Parameters defining a family of FCS
In addition to the parameters listed below, the manufacturer may introduce additional criteria allowing the definition of families of more restricted size. Those parameters are not necessarily parameters that have an influence on the level of performance and/or fuel / hydrogen consumption.
2.5.1
The following criteria shall apply to all members within a family of FCS:
(a)
All family members are of the same type of FCS defined in accordance with Table 9 of this Annex.
(b)
Fuel Cell Stack with a tolerance of ±5 % for weight & size and with a tolerance of ±2 % for the number of cells and cell surface area.
(c)
PCS (if applicable) with a tolerance of ±5 %: efficiency.
(d)
Air compressor with a tolerance of ±5 %: efficiency.
(e)
Humidifier (if applicable): similar layout and dimension.
(f)
Pumps (if applicable): similar layout and dimension.
(g)
Heat exchangers: similar layout and dimension.
(h)
Electrical plugs: any changes allowed.
(i)
Piping: any changes allowed.
(j)
Media actuators: any changes allowed.
(k)
Housing: any changes allowed.
(l)
Sensors: Changes allowed, if the precision of the ‘parent’ sensor used in certification process is still met.
(m)
Minimum number of OP in the declared operating range: All FCS within the same family of FCS shall have a minimum number of 8 operating points, as defined in accordance with point 7.3.4.1, located within their individual declared operating range specified by the manufacturer in accordance with point 7.3.4 of this Annex.
Upon approval from the approval authority, changes to the components set out in points (a) to (l) may occur if sound engineering rationale is provided to prove that the respective change does not negatively affect the performance parameters or the fuel consumption.
2.6.
Choice of the parent
The parent of one family of FCS shall be member with the highest overall effective electric power output.’;
(25)
in Appendix 14, point 1.4, Table 1, the following row is inserted after the row ‘B’:
‘F
fuel cell system (FCS)’
(26)
Appendix 15 is amended as follows:
(a)
the section ‘Set of input parameters for Electric machine system’ is amended as follows:
(a)
Table 1 is amended as follows:
(1)
in row ‘CertificationMethod’, column ‘Description/Reference’ the text is replaced by the following:
‘Allowed values: ‘Measured’, ‘Standard values’
’;
(2)
in row ‘DcDcConverterIncluded’, column ‘Description/Reference’ the text is replaced by the following:
‘Set to ‘true’ where a DC/DC converter is part of the electric machine system, in accordance with point 4.1 of this Annex. Where the parameter ‘CertificationMethod’ is ‘Standard values’, the parameter shall always be set to ‘true’
’;
(b)
Table 6 is amended as follows:
(1)
in row ‘CoolantTempInlet’, column ‘Description/Reference’ the text is replaced by the following:
‘Determined in accordance with paragraphs 4.1.5.1 and 4.3.6 of this Annex.
The input shall be specified as an average value over both voltage levels.’;
(2)
in row ‘CoolingPower’, column ‘Description/Reference’ the text is replaced by the following:
‘Determined in accordance with paragraphs 4.1.5.1 and 4.3.6 of this Annex.
The input shall be specified as an average value over both voltage levels.’;
(b)
the section ‘Set of input parameters for IEPC’ is amended as follows:
(a)
in Table 1, the following row is added:
‘DisengagementClutch
P565
boolean
[-]
In case the IEPC is equipped with a functionality that actively, under certain operating conditions, allows for mechanically disconnecting all EMs inside the component from the rest of the vehicle’s powertrain towards the wheels, this input shall be set to true.
The exact location of the disconnection may also be located further downstream of the EMs output shafts and include some of the gearing parts of the IEPC being disengaged.’
(b)
in Table 2, in row ‘MaxOutputShaftTorque’, column ‘Description/Reference’ the text is replaced by the following:
‘Optional.
In case of an IEPC design type wheel motor the declared value for the maximum torque at the output shaft of the component shall correspond to the configuration measured in accordance with point 4.1.1.2 of this Annex (i.e. the value declared if two such components were measured shall be twice as high as if only one single component was measured).’;
(c)
in Table 4, the heading is replaced by the following:
‘Input parameters ‘IEPC/MaxMinTorque’ for each operating point, for each voltage level measured and for each forward gear measured (optional gear dependent measurement in accordance with point 4.2.2(c) of this Annex)’;
(d)
in Table 7, in rows ‘CollantTempInlet’ and ‘CoolingPower’, column ‘Description/Reference’ the text is replaced by the following:
‘Determined in accordance with points 4.1.5.1 and 4.3.6 of this Annex.
The input shall be specified as an average value over both voltage levels.’;
(c)
the section ‘Set of input parameters for Battery system’ is amended as follows:
(a)
Table 1 is amended as follows:
(1)
in row ‘RatedCapacity’, column ‘Description/Reference’, the following text is inserted:
‘Where the parameter ‘CertificationMethod’ is ‘Standard values’, those values shall be determined in accordance with Appendix 10, point (1)(b)’;
(2)
in row ‘JunctionboxIncluded’, column ‘Parameter ID’, the text is replaced by the following:
‘P516’;
(b)
Table 4 is amended as follows:
(1)
in row ‘SOC’, column ‘Description/Reference’, the text is deleted;
(2)
in rows ‘MaxChargingCurrent’ and ‘MaxDischargingCurrent’, column ‘Description/Reference’ the following text is added:
‘Where the parameter ‘CertificationMethod’ is ‘Standard values’, those values shall be determined in accordance with Appendix 10, subpoint (1)(e), and all values shall have a positive pre-sign.’;
(d)
in the section ‘set of input for Capacitor System’, Table 1 is amended as follows:
(a)
in row ‘CertificationMethod’, column ‘Description/Reference’, the text is replaced by the following:
‘Allowed values: ‘Measured’, ‘Standard values’.’;
(b)
in row ‘InternalResistance’, column ‘Unit’, the following text is inserted:
‘[mOhm]’;
(c)
in row ‘TestingTemperature’, column ‘Parameter ID’, the text is replaced by the following:
‘P537’;
(e)
the following section is added:
‘
Set of input parameters for fuel cell system
Table 1
Input parameters ‘Fuel cell system/General’
Parameter name
Parameter ID
Type
Unit
Description/Reference
Manufacturer
P566
token
-
Model
P567
token
-
CertificationNumber
P568
token
-
Date
P569
dateTime
-
Date and time when the component-hash is created
AppVersion
P570
token
-
Manufacturer specific input regarding the tools used for evaluation and handling of measured component data
CertificationMethod
P571
string
-
Allowed values: ‘Measured’, ‘Standard values’
FCSRatedPower
P572
integer
kW
Defined in accordance with Appendix 1, point 4.6., of Annex 6 to UN Regulation No 100
Table 2
Input parameters ‘Fuel cell system/FuelMap’ for each operating point measured
Parameter name
Parameter ID
Type
Unit
Description/Reference
OutputPower
P573
double, 2
kW
Electric power provided by the FCS determined in accordance with point 7.5.3
FuelConsumption
P574
double, 2
g/h
Fuel mass flow determined in accordance with point 7.5.3.’
( *1 ) If volume flow is metered, the accuracy shall be transferred as accuracy of mass flow measurement.’;
( 1 ) The hydrogen fuel index is determined by subtracting the “total non-hydrogen gases” in this table, expressed in mole per cent, from 100 mole per cent.
( 2 ) Total hydrocarbons except methane include oxygenated organic species.
( 3 ) The sum of measured CO, HCHO and HCOOH shall not exceed 0,2 μmol/mol
( 4 ) As a minimum, total sulfur compounds include H2S, COS, CS2 and mercaptans, which are typically found in natural gas.
( 5 ) Test method shall be documented. Test methods defined in ISO21087 are preferable.
( 6 ) The analysis of specific contaminants depending on the production process shall be exempted. A vehicle manufacturer shall provide the responsible authority reasons for exempting specific contaminants.
( *2 ) no further break-down
( 7 ) not part of the certified energy balance, missing BoPC shall be accounted for using the methods laid down in point 7.5
( 8 ) according to manufacturer specification which shall ensure real world like operation
( 9 ) if applicable/mounted on FCS respectively vehicle
( 10 ) only adaptions are allowed to enable standalone operation
( 11 ) integration of items is optional
( 12 ) may be part of either TMS or WTS
( 13 ) delete if not applicable
( *3 ) if applicable
( *4 ) In accordance with point 7.2.1 and Table 9 of this Annex
( *5 ) declared by the manufacturer of the FCSS
( *6 ) The CoP test shall be performed in the first year.
( *7 ) Only fuel cell systems which fall under the requirements of this Regulation and which did not get standard values according to Appendix 11 shall be considered.
