Browse Publications Technical Papers 2018-01-0321
2018-04-03

Fuel Consumption and Performance Benefits of Electrified Powertrains for Transit Buses 2018-01-0321

This study presents a process to quantify the fuel saving potential of electrified powertrains for medium and heavy duty vehicles. For this study, equivalent vehicles with electrified powertrains are designed with the underlying principle of not compromising on cargo carrying capacity or performance. Several performance characteristics, that are relevant for all types of medium and heavy duty vehicles, were identified for benchmarking based on the feedback from the industry. Start-stop hybrids, parallel pre-transmission hybrids, plug-in hybrids, and battery electric vehicles are the technology choices in this study. This paper uses one vehicle as an example, explains the component sizing process followed for each powertrain, and examines each powertrain’s fuel saving potential. The process put forth in this paper can be used for evaluating vehicles that belong to all medium and heavy duty classes. This study gives an estimate of the percentage fuel consumption reduction that can be achieved with various types of hybrid powertrains, based on the described sizing assumptions.

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