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World Electric Vehicle Journal is published by MDPI from Volume 9 issue 1 (2018). Articles in this Issue were published by The World Electric Vehicle Association (WEVA) and its member the European Association for e-Mobility (AVERE), the Electric Drive Transportation Association (EDTA), and the Electric Vehicle Association of Asia Pacific (EVAAP). They are hosted by MDPI on mdpi.com as a courtesy and upon agreement with AVERE.
Open AccessArticle

Powertrain System of Honda FCX Clarity Fuel Cell Vehicle

Honda R&D Co., Ltd., 4630 Shimotakanezawa, Haga-machi, Haga-gun, Tochigi, Japan
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World Electr. Veh. J. 2009, 3(4), 820-829; https://doi.org/10.3390/wevj3040820
Published: 25 December 2009
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Abstract

To assist in combating global warming and to respond to energy issues, Honda has developed the FCX Clarity, a new fuel cell vehicle that displays significant improvements in driving performance and fuel efficiency against previous FCX Models, and which achieves a level of appeal unrivalled by reciprocating engine vehicles. The key to the development of the new vehicle was the reduction of the size and weight of the fuel cell powertrain.
Honda’s unique V Flow FC stack technology is the core of the FCX Clarity’s fuel cell powertrain. A considerable reduction in size and weight and increased power have been achieved, with the powertrain as a whole displaying a weight output density that is 2X higher and volume output density 2.2X higher than that of the previous FCX.
The maximum power of the V Flow FC stack employed in the Clarity has been increased to 100 kW. The new FC stack also achieves a 50% increase in volume output density and 67% increase in weight output density against the previous stack. Low-temperature start performance has also been significantly improved, with the vehicle able to be started at -30 °C.
A new design has increased the maximum power of the drive motor to 100 kW and resulted in the achievement of a smooth, powerful and continuously extendable acceleration feel.
Increased efficiency in the powertrain and superior energy management have enabled the realization of an energy efficiency of 60%, resulting in a level of fuel efficiency 2.1X higher than that of a small gasoline vehicle and 1.4X higher than that of a small hybrid vehicle.
Keywords: Fuel cell electric vehicle; Powertrain; Performance Fuel cell electric vehicle; Powertrain; Performance
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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MATSUNAGA, M.; FUKUSHIMA, T.; OJIMA, K. Powertrain System of Honda FCX Clarity Fuel Cell Vehicle. World Electr. Veh. J. 2009, 3, 820-829.

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