Impact of Drive Cycle Aggressiveness and Speed on HEVs Fuel Consumption Sensitivity

Document Number: 2007-01-0281

Date Published: April 2007

Author(s):
Phillip B. Sharer - Argonne National Laboratory

Abstract:
Hybrid Electric Vehicle (HEV) owners have reported significantly lower fuel economy than the published estimates. Under on-road driving conditions, vehicle acceleration, speed, and stop time differ from those on the normalized test procedures. To explain the sensitivity, several vehicles, both conventional and hybrid electric, were tested at Argonne National Laboratory. The tests demonstrated that the fuel economy of Prius MY04 was more sensitive to drive-cycle variations. However, because of the difficulty in instrumenting every component, an in-depth analysis and quantification of the reasons behind the higher sensitivity was not possible. In this paper, we will use validated models of the tested vehicles and reproduce the trends observed during testing. Using PSAT, the FreedomCAR vehicle simulation tool, we will quantify the impact of the main component parameters, including component efficiency and regenerative braking.

File Size: 678K
Product Status: In Stock

Included in: SP-2101

See other papers presented at SAE World Congress & Exhibition, April 2007, Detroit, MI, USA, Session: Advanced Hybrid Vehicle Powertrains (Part 3 of 6) Hybrid Testing and Simulation Studies

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