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  • 21-Nov-2011 10:31 EST

Dynamometer Evaluation of Five Electric Vehicles Designed for Urban Deliver Route Services ?


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With nearly 220,000 vehicles, the United States Postal Service (USPS) has the largest non-military vehicle fleet in the world. This fleet requires over a billion dollars of fuel annually, and this figure does not include contracted vehicles. As a part of the business strategy, the USPS has embraced and invested in alternative fueled vehicles since 1899, when the first recorded use of an electric vehicle for USPS service was performed as a technology evaluation in Cleveland, OH. As part of a technology evaluation of advanced vehicle systems, the USPS has partnered with the DOE?s Vehicle Technology Program (VTP) to benchmark and quantify the capabilities of five vehicles in meeting specific Urban Route Delivery requirements, both with dynamometer and in-service testing. The all electric vehicle conversions have been developed by established electric vehicle systems manufacturers representing various perspectives on meeting the vehicle specific operation objectives. The architectures include both front and rear wheel drive, various battery chemistry as well as capacity and several unique motor/power electronics applications. This presentation will give a brief overview of the project (which is managed by Idaho National Laboratory), discuss the vehicle dynamometer testing and provide a summary the testing results of the vehicles operating on the dynamometer and recharging events. Following the initial vehicle dynamometer testing these vehicles will be delivered to the USPS for in-service evaluation in the Washington DC area.

Perry Jones, Oak Ridge National Laboratory

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