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Hybrid Electric Transit Bus
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English
Abstract
A government, industry, and university cooperative is developing an advanced hybrid electric city transit bus. Goals of this effort include doubling the fuel economy compared to current buses and reducing emissions to one-tenth of current EPA standards. Unique aspects of the vehicle's power system include the use of ultra-capacitors as an energy storage system, and a planned natural gas fueled turbogenerator developed from a small jet engine. Power from both the generator and energy storage system is provided to a variable speed electric motor attached to the rear axle. At over 15000 kg gross weight, this is the largest vehicle of its kind ever built using ultra-capacitor energy storage. This paper describes the overall power system architecture, the evolution of the control strategy, and its performance over industry standard drive cycles.
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Citation
Viterna, L., "Hybrid Electric Transit Bus," SAE Technical Paper 973202, 1997, https://doi.org/10.4271/973202.Also In
References
- “Baseline Advanced Design Transit Coach Specifications,” Department of Transportation 1978