ISO 23828:2022
Fuel cell road vehicles — Energy consumption measurement — Vehicles fuelled with compressed hydrogen
This document specifies the procedures for measuring the energy consumption and driving range of fuel cell passenger cars and light-duty trucks that use compressed hydrogen.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Hydrogen measurement accuracy
6 Hydrogen consumption measurement
6.1 General
6.2 Pressure method
6.3 Gravimetric method
6.4 Flow method
7 Fuel consumption test
7.1 Test conditions
7.1.1 General
7.1.2 Ambient temperature
7.1.3 Vehicle conditions
7.1.4 Chassis dynamometer conditions
7.2 Test instrumentation
7.3 Charging of the RESS of externally chargeable FCHEV
7.3.1 Application of a normal charge
7.3.2 Charging the RESS and measuring energy
7.4 Hydrogen consumption tests
7.4.1 General
7.4.2 Vehicle preconditioning
7.4.3 Vehicle soak
7.4.4 Vehicle movement to the test room
7.5 Measurement and calculation over applicable driving test (ADT)
7.5.1 CD state
7.5.2 CS state
7.6 Correction of the test results for FCHEV
7.6.1 General
7.6.2 Allowable range of RESS energy balance
7.6.3 Correction procedure by correction coefficient
8 Calculation of driving range
8.1 Non-externally chargeable FCHEV
8.2 Externally chargeable FCHEV
9 Calculation of contribution of electricity and hydrogen for the driving range
10 Presentation of results
Annex A (normative) Pressure method
Annex B (normative) Gravimetric method
Annex C (normative) Flow method
Annex D (informative) Current method
Annex E (informative) Determination of tank surface temperature measuring points
Annex F (informative) Test results of hydrogen and electric energy consumption and driving range of test vehicle
Annex G (normative) Calculation of allowable range of RESS energy change
Annex H (normative) Linear correction method using a correction coefficient
Annex I (normative) Usable amount of hydrogen of FCV and FCHEV
Annex J (normative) Test conditions and instrumentation for CD state
Annex K (informative) Calculation of electricity and hydrogen contribution
Annex L (informative) Fuel consumption measurement by vehicle refuelling
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Hydrogen measurement accuracy
6 Hydrogen consumption measurement
6.1 General
6.2 Pressure method
6.3 Gravimetric method
6.4 Flow method
7 Fuel consumption test
7.1 Test conditions
7.1.1 General
7.1.2 Ambient temperature
7.1.3 Vehicle conditions
7.1.4 Chassis dynamometer conditions
7.2 Test instrumentation
7.3 Charging of the RESS of externally chargeable FCHEV
7.3.1 Application of a normal charge
7.3.2 Charging the RESS and measuring energy
7.4 Hydrogen consumption tests
7.4.1 General
7.4.2 Vehicle preconditioning
7.4.3 Vehicle soak
7.4.4 Vehicle movement to the test room
7.5 Measurement and calculation over applicable driving test (ADT)
7.5.1 CD state
7.5.2 CS state
7.6 Correction of the test results for FCHEV
7.6.1 General
7.6.2 Allowable range of RESS energy balance
7.6.3 Correction procedure by correction coefficient
8 Calculation of driving range
8.1 Non-externally chargeable FCHEV
8.2 Externally chargeable FCHEV
9 Calculation of contribution of electricity and hydrogen for the driving range
10 Presentation of results
Annex A (normative) Pressure method
Annex B (normative) Gravimetric method
Annex C (normative) Flow method
Annex D (informative) Current method
Annex E (informative) Determination of tank surface temperature measuring points
Annex F (informative) Test results of hydrogen and electric energy consumption and driving range of test vehicle
Annex G (normative) Calculation of allowable range of RESS energy change
Annex H (normative) Linear correction method using a correction coefficient
Annex I (normative) Usable amount of hydrogen of FCV and FCHEV
Annex J (normative) Test conditions and instrumentation for CD state
Annex K (informative) Calculation of electricity and hydrogen contribution
Annex L (informative) Fuel consumption measurement by vehicle refuelling
Bibliography