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REPORT 17326
First edition
2023-12
Fuel cell road vehicles — Cold start
performances under sub-zero
temperature — Vehicles fuelled with
compressed hydrogen
Véhicules routiers à piles à combustible — Performances de
démarrage à froid à des températures inférieures à zéro — Véhicules
alimentés en hydrogène comprimé
Reference number
ISO/TR 17326:2023(E)
© ISO 2023
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ISO/TR 17326:2023(E)
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© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
ii
© ISO 2023 – All rights reserved
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ISO/TR 17326:2023(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 2
5 Test instrumentation .2
6 Vehicle conditions . 2
7 Test temperature conditions .3
8 Test methods . 3
8.1 General . 3
8.2 Soak method under sub-zero temperature . 3
8.3 Cold start performance test under sub-zero temperature . 3
8.4 Launch performance test under sub-zero temperature . 4
8.4.1 Determining the dynamometer load coefficient . 4
8.4.2 Setting of vehicle's driving mode . 4
8.4.3 Test method . 4
8.4.4 Tolerance of drive cycle test . 5
8.4.5 Test termination criteria . 5
8.5 Requirements of data acquisition . 5
9 Test data processing .
...