HEV Dynamometer Testing with State-of-Charge Corrections in the 1995 HEV Challenge

Paper #:
  • 960740

Published:
  • 1996-02-01
Citation:
Duoba, M. and Larsen, R., "HEV Dynamometer Testing with State-of-Charge Corrections in the 1995 HEV Challenge," SAE Technical Paper 960740, 1996, https://doi.org/10.4271/960740.
Pages:
10
Abstract:
In the 1995 HEV Challenge competition, 17 prototype Hybrid Electric Vehicles (HEVs) were tested by using special HEV test procedures. The contribution of the batteries during the test, as measured by changes in battery state-of-charge (SOC), were accounted for by applying SOC corrections to the test data acquired from the results of the HEV test. The details of SOC corrections are described and two different HEV test methods are explained. The results of the HEV test methods are explained. The results of the HEV tests and the effects on the test outcome of varying HEV designs and control strategies are examined. Although many teams had technical problems with their vehicles, a few vehicles demonstrated high fuel economy and low emissions. One vehicle had emissions lower than California's ultra-low emission vehicle (ULEV) emissions rates, and two vehicles demonstrated higher fuel economy and better acceleration than their stock counterparts.
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