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Two-Mode Urban Transit Hybrid Bus In-Use Fuel Economy Results from 20 Million Fleet Miles
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 16, 2007 by SAE International in United States
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The General Motors Allison Two-Mode compound split parallel hybrid EP system for transit buses has been in production for over three years, accumulating over 20 million fleet miles. During this period of operation, extensive fuel economy analysis has been performed over multiple use cycles in multiple locations. This paper describes the in-use fuel economy results, as well as the hybrid system mode operations, the component utilization, and the controls improvements to maximize the hybrid fuel economy. Actual in-use data will be presented from individual vehicles, as well as the fleet averages encompassing a broad range of duty cycles. A chassis dynamometer testing results are discussed as an alternative evaluation method.
|King County Metro - Allison Hybrid Electric Transit Bus Testing
|Defining the General Motors 2-Mode Hybrid Transmission
|Control Strategy of Hybrid Electric Vehicle with Double Planetary Gear Sets
CitationChiang, P., "Two-Mode Urban Transit Hybrid Bus In-Use Fuel Economy Results from 20 Million Fleet Miles," SAE Technical Paper 2007-01-0272, 2007, https://doi.org/10.4271/2007-01-0272.
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