ISO/TR 17326:2023

Fuel cell road vehicles — Cold start performances under sub-zero temperature — Vehicles fuelled with compressed hydrogen

This document describes the test methods for the cold start performances of fuel cell hybrid electric vehicles (FCHEV) under sub-zero temperature conditions. This document applies to FCHEV as passenger cars and light duty trucks with a maximum authorized total mass of 3 500 kg (hereinafter referred to as vehicle) and 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

General Information

• Status: Published
• Publication Date: 11-Dec-2023
• ICS: 43.120 - Electric road vehicles
• Technical Committee: ISO/TC 22/SC 37 - Electrically propelled vehicles
• Drafting Committee: ISO/TC 22/SC 37 - Electrically propelled vehicles
• Current Stage: 6060 - International Standard published
• Start Date: 12-Dec-2023
• Due Date: 31-Mar-2025
• Completion Date: 12-Dec-2023

Standards Content (Sample)

TECHNICAL ISO/TR
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)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
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 .
...

FINAL
TECHNICAL ISO/DTR
DRAFT
REPORT 17326
ISO/TC 22/SC 37
Fuel cell road vehicles — Cold start
Secretariat: DIN
performances under sub-zero
Voting begins on:
2023-09-04 temperature — Vehicles fuelled with
compressed hydrogen
Voting terminates on:
2023-10-30
Véhicules routiers à piles à combustible — Performances de
démarrage à froid à des températures inférieures à zéro — Véhicules
alimentés en hydrogène comprimé
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/DTR 17326:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2023

---------------------- Page: 1 ----------------------
ISO/DTR 17326:2023(E)
FINAL
TECHNICAL ISO/DTR
DRAFT
REPORT 17326
ISO/TC 22/SC 37
Fuel cell road vehicles — Cold start
Secretariat: DIN
performances under sub-zero
Voting begins on:
temperature — Vehicles fuelled with
compressed hydrogen
Voting terminates on:
Véhicules routiers à piles à combustible — Performances de
démarrage à froid à des températures inférieures à zéro — Véhicules
alimentés en hydrogène comprimé
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: [phone]
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: [e-mail]
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/DTR 17326:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023

---------------------- Page: 2 ----------------------
ISO/DTR 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 sub­zero temperature .
...

ISO/TR DTR 17326:2023(E)
ISO/TC 22/SC 37/WG 2
Secretariat: DIN
Date: 2023-2-1508-21
Fuel cell road vehicles — Cold start performances under sub-zero
temperature — Vehicles fuelled with compressed hydrogen

DTRVéhicules routiers à piles à combustible — Performances de démarrage à froid à des
températures inférieures à zéro — Véhicules alimentés en hydrogène comprimé
FDIS stage

Warning for WDs and CDs
This document is not an ISO International Standard. It is distributed for review and comment. It is subject to
change without notice and may not be referred to as an International Standard.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.


A model manuscript of a draft International Standard (known as “The Rice Model”) is available at
© ISO 2023 – All rights reserved

---------------------- Page: 1 ----------------------
ISO/DTR 17326:2023(E)
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this
publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical,
including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can
be requested from either ISO at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
EmailE-mail: [e-mail]
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii © ISO 2023 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/DTR 17326:2023(E)
Contents
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 . 3
7 Test temperature conditions . 3
8 Test methods . 3
9 Test data processing . 6
10 Test records . 6
Annex A (informative) Test process . 7
Annex B (informative) Energy consumption data processing method . 8
Annex C (informative) Test records for cold start performances of FCHEV under sub-zero temperature
. 10
Bibliography . 12

© ISO 2023 – All rights reserved iii

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ISO/DTR 17326:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees
...