Operating Envelopes of Hybrid Bus Engines Dept. of Mech. and Aerospace Eng. West Virginia Univ

Format:

Conference/Event

Author/Creator:

Clark, Nigel, author.

Conference Name:

SAE International Fall Fuels & Lubricants Meeting & Exhibition (2001-09-24 : San Antonio, Texas, United States)

Spring Fuels & Lubricants Meeting & Exhibition (2002-05-06 : Reno, Nevada, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2001

Summary:

Recent chassis testing of hybrid buses demonstrated the potential of hybrid technology to reduce emissions and raise fuel economy relative to conventional buses. However, hybrid buses represent a certification quandary because the engines must be certified using the accepted Federal Test Procedure (FTP), without regard for benefits that may arise from less transient engine operation. Actual engine operating data from series configuration hybrid buses were analyzed to determine the envelopes of torque and speeds covered by the engine. Transient engine operation was also considered in terms of rates of change of torque, power and speed. These measures did not compare closely with similar measures computed from the FTP because the series hybrid engines explored a more structured zone of operation than the FTP implied and because the FTP represented more transient operation. A modal data analysis revealed that the Euro III 13 mode steady state test was the most inclusive and representative cycle for the heavy -duty hybrid vehicle engines evaluated for this study

Notes:

Vendor supplied data

Publisher Number:

2001-01-3537

Access Restriction:

Restricted for use by site license