Hybrid Diesel-Electric Heavy Duty Bus Emissions: Benefits Of Regeneration And Need For State Of Charge Correction

2000-01-2955

10/16/2000

Event
International Fuels & Lubricants Meeting & Exposition
Authors Abstract
Content
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.
Meta TagsDetails
DOI
https://doi.org/10.4271/2000-01-2955
Pages
16
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.
Additional Details
Publisher
Published
Oct 16, 2000
Product Code
2000-01-2955
Content Type
Technical Paper
Language
English