ISO/TR 11954:2024
(Main)Fuel cell road vehicles — Performance measurement — Vehicles fuelled with compressed hydrogen
Fuel cell road vehicles — Performance measurement — Vehicles fuelled with compressed hydrogen
This document specifies test methods for the measurement of performance, such as acceleration, maximum speed and hill climbing ability, of fuel cell hybrid electric vehicles (FCHEV) as passenger cars and light duty trucks with a maximum authorized total mass of 3 500 kg and fuelled with compressed hydrogen.
Véhicules routiers avec pile à combustible — Mesure des performances — Véhicules alimentés par hydrogène comprimé
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FINAL
TECHNICAL ISO/DTR
DRAFT
REPORT 11954
ISO/TC 22/SC 37
Fuel cell road vehicles — Performance
Secretariat: DIN
measurement — Vehicles fuelled with
Voting begins on:
2023-09-04 compressed hydrogen
Voting terminates on:
2023-10-30
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 11954:2023(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 11954:2023(E)
FINAL
TECHNICAL ISO/DTR
DRAFT
REPORT 11954
ISO/TC 22/SC 37
Fuel cell road vehicles — Performance
Secretariat: DIN
measurement — Vehicles fuelled with
Voting begins on:
compressed hydrogen
Voting terminates on:
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: +41 22 749 01 11
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: copyright@iso.org
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO
ISO/DTR 11954:2023(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 11954:2023(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Parameters, units and accuracy of measurements . 3
5 Test conditions .3
5.1 Vehicle conditions . 3
5.2 Atmospheric conditions. 4
5.2.1 Ambient temperature and atmospheric pressure . 4
5.2.2 Air density . 4
5.2.3 Wind speed . 4
5.2.4 Relative humidity . 4
5.3 Track conditions . 4
5.3.1 General conditions .
...
ISO/TR DTR 11954:2023(E)
ISO/TC 22/SC 37/WG 2
Secretariat: DIN
Date: 2023-02-2708-21
Fuel cell road vehicles - — Performance measurement -— Vehicles
fuelled with compressed hydrogen
DTRFDIS 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.
© ISO 2023 – All rights reserved
---------------------- Page: 1 ----------------------
ISO/DTR 11954:2023(:(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: copyright@iso.org
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii © ISO 2023 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/DTR 11954:2023(:(E)
Contents
Foreword . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Parameters, units and accuracy of measurements . 3
5 Test conditions . 4
5.1 Vehicle conditions . 4
5.2 Atmospheric conditions . 4
5.2.1 Ambient temperature and atmospheric pressure . 4
5.2.2 Air density . 4
5.2.3 Wind speed . 5
5.2.4 Relative humidity . 5
5.3 Track conditions . 5
5.3.1 General conditions . 5
5.3.2 Straight track . 5
5.3.3 Loop track . 5
5.3.4 Single direction test . 6
6 Preconditioning of the vehicle . 6
6.1 Hydrogen refuelling . 6
6.2 RESS state of charge preconditioning of externally chargeable F
...
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