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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 as a courtesy and upon agreement with AVERE.
Open AccessArticle

Fuel Consumption Test Method for 4WD HEVs – On a Necessity of Double Axis Chassis Dynamometer Test –

National Institute of Advanced Industrial Science and Technology (AIST), 1-2-1 Namiki, Tsukuba, Ibaraki 305-8564, Japan
Shibaura Institute of Technology, 3-7-5 Toyosu, kohtoh-ku, Tokyo-to 135-8548, Japan
Author to whom correspondence should be addressed.
World Electr. Veh. J. 2008, 2(4), 253-263;
Published: 26 December 2008
PDF [2177 KB, uploaded 18 May 2018]


Concerns regarding global climate change have caused the transportation sector to look for alternatives to petroleum as a fuel for vehicles of all types. Hybrid electric vehicles (HEVs) have been recognized as being particularly efficient for urban traffic use. In the last few years, Four wheel drive (4WD) transmissions have been developed for heavy passenger vehicles. As these vehicles become more popular, there is a need for accurate fuel consumptions test methods. Clearly the most accurate fuel consumption measurements would be obtained by using dual axis dynamometers, but these systems are not always available. Single axis dynamometers are commonly used for evaluating fuel consumption, but these are inadequate for 4WD vehicles without adjustments to account for the uncertainty that will result from disabling one of the drive axles.
This paper describes a method for extrapolating fuel consumption results from single axle chassis dynamometer testing to estimate the fuel consumption of 4WD vehicles. A simple method is proposed that will allow reasonable estimates of fuel consumption for 4WD vehicles to be made from single axle dynamometer testing.
This paper also describes methods to reduce the uncertainty in 4WD chassis dynamometer testing by paying particular attention to road load, tire conditions and restraint characteristics.
Keywords: HEV; Energy Consumption; Efficiency; Chassis Dynamometer; State of Charge HEV; Energy Consumption; Efficiency; Chassis Dynamometer; State of Charge
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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Shimizu, K.-I.; Nihei, M.; Okamoto, T. Fuel Consumption Test Method for 4WD HEVs – On a Necessity of Double Axis Chassis Dynamometer Test –. World Electr. Veh. J. 2008, 2, 253-263.

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