Road vehicles — Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel systems — Part 2: Test methods

This document specifies the test methods for checking the minimum safety requirements specified in ISO 21266‑1. It is applicable to the functionality of the fuel systems designed to operate on compressed gaseous hydrogen and hydrogen/natural gas blends of motor vehicles as defined in ISO 3833. For tests of individual components, refer to the parts of ISO 12619, ISO 16380, ISO 17268, ISO 19881[1] and ISO/TS 15869 as applicable [1] Under preparation. Stage at the time of publication: ISO/FDIS 19881.

Véhicules routiers — Systèmes d'alimentation pour hydrogène gazeux comprimé (CGH2) et mélanges d'hydrogène et de gaz naturel — Partie 2: Méthodes d'essai

General Information

Status
Published
Publication Date
25-Sep-2018
Current Stage
9092 - International Standard to be revised
Completion Date
26-Feb-2024
Ref Project

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ISO 21266-2:2018 - Road vehicles -- Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel systems
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INTERNATIONAL ISO
STANDARD 21266-2
First edition
2018-10
Road vehicles — Compressed gaseous
hydrogen (CGH2) and hydrogen/
natural gas blends fuel systems —
Part 2:
Test methods
Véhicules routiers — Systèmes d'alimentation pour hydrogène gazeux
comprimé (CGH2) et mélanges d'hydrogène et de gaz naturel —
Partie 2: Méthodes d'essai
Reference number
ISO 21266-2:2018(E)
©
ISO 2018

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ISO 21266-2:2018(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2018
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
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CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
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Published in Switzerland
ii © ISO 2018 – All rights reserved

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ISO 21266-2:2018(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definition . 1
4 Test methods . 2
4.1 Cylinder mounting strength tests . 2
4.1.1 General. 2
4.1.2 Inertia test . 2
4.1.3 Static test . 2
4.1.4 Alternative method . 3
4.1.5 Acceptance criteria . 3
4.2 Leak test . 3
4.3 Functional test . 4
4.3.1 Main shut-off valve test . 4
4.3.2 Receptacle clearance test . 4
4.4 Receptacle mounting tests . 4
Annex A (informative) Engineering experience for the mounting of steel cylinders .5
Bibliography . 9
© ISO 2018 – All rights reserved iii

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ISO 21266-2:2018(E)

Foreword
ISO (the International O
...

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