ISO/TR 11954:2008
(Main)Fuel cell road vehicles — Maximum speed measurement
Fuel cell road vehicles — Maximum speed measurement
ISO/TR 11954:2008 describes test procedures for measuring the maximum road speed of fuel cell passenger cars and light duty trucks which use compressed hydrogen and which are not externally chargeable, in accordance with national or regional standards or legal requirements.
Véhicules routiers à pile à combustible — Mesure de la vitesse maximale
General Information
Relations
Standards Content (Sample)
TECHNICAL ISO/TR
REPORT 11954
First edition
2008-10-15
Fuel cell road vehicles — Maximum
speed measurement
Véhicules routiers à pile à combustible — Mesure de la vitesse
maximale
Reference number
ISO/TR 11954:2008(E)
©
ISO 2008
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ISO/TR 11954:2008(E)
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ISO/TR 11954:2008(E)
Foreword
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Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO/TR 11954 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 21,
Electrically propelled road vehicles.
© ISO 2008 – All rights reserved iii
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ISO/TR 11954:2008(E)
Introduction
Fuel cell vehicles (FCV) include the following types:
⎯ pure fuel cell vehicles (PFCV), in which the fuel cell system is the only on-board energy source for
propulsion and auxiliary systems,
⎯ fuel cell hybrid electric vehicles (FCHEV), in which the fuel cell system is integrated with an on-board
rechargeable energy storage system (RESS) for electric energy supply to propulsion and auxiliary
systems.
FCHEV design options include the following:
a) externally chargeable or non-externally chargeable;
b) rechargeable energy storage system (RESS): battery or capacitor;
c) driver-selected operating modes: if FCHEV has no driver-selected operating mode, it has only an FCHEV
mode.
Table 1 shows the classification of FCHEV.
Table 1 — FCHEV classification
Chargeability Operating mode
FCHEV mode
externally chargeable
EV mode
FCHEV
FCHEV mode
non-externally chargeable
EV mode
This Technical Report is applicable to PFCV and to non-externally chargeable FCHEV with FCHEV mode only
(see shaded boxes in Table 1).
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