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Hybrid Diesel-Electric Heavy Duty Bus Emissions: Benefits Of Regeneration And Need For State Of Charge Correction
Technical Paper
2000-01-2955
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Hybrid diesel electric buses offer the advantage of superior fuel economy through use of regenerative braking and lowered transient emissions by reducing the need of the engine to follow load as closely as in a conventional bus. With the support of the Department of Energy (DOE), five Lockheed Martin-Orion hybrid diesel-electric buses were operated on the West Virginia University Transportable Laboratory in Brooklyn, New York. The buses were exercised through a new cycle, termed the Manhattan cycle, that was representative of today's bus use as well as the accepted Central Business District Cycle and New York Bus Cycle. Emissions data were corrected for the state of charge of the batteries. The emissions can be expressed in units of grams/mile, grams/axle hp-hr and grams/gallon fuel. The role of improved fuel economy in reducing oxides of nitrogen relative to conventional automatic buses is evident in the data. Continuous emissions captured from the buses have been compared with the power demand of the bus, and the effects of state of charge correction within the hybrid system are also evident.
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Authors
- Nigel Clark - Department of Mechanical & Aerospace Engineering College of Engineering & Mineral Resources West Virginia Univ.
- Wenwei Xie - Department of Mechanical & Aerospace Engineering College of Engineering & Mineral Resources West Virginia Univ.
- Mridul Gautam - Department of Mechanical & Aerospace Engineering College of Engineering & Mineral Resources West Virginia Univ.
- Donald W. Lyons - Department of Mechanical & Aerospace Engineering College of Engineering & Mineral Resources West Virginia Univ.
- Paul Norton - National Renewable Energy Laboratory
- Thomas Balon - M.J. Bradley & Associates
Topic
Citation
Clark, N., Xie, W., Gautam, M., Lyons, D. et al., "Hybrid Diesel-Electric Heavy Duty Bus Emissions: Benefits Of Regeneration And Need For State Of Charge Correction," SAE Technical Paper 2000-01-2955, 2000, https://doi.org/10.4271/2000-01-2955.Also In
References
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