A personal computer-based vehicle powertrain simulation (VPS) is developed to predict fuel economy and performance. This paper summarizes the governing equations used in the model. Then the different simulation techniques are described with emphasis on the more complicated time-dependent simulation. The simulation is validated against constant speed and variable cycle test track data obtained for a 5 ton army truck. Then the simulation is used to compare the performance of the 5 ton truck when powered by a coold and naturally aspirated engine, a cooled and turbocharged engine, and an uncooled and turbocharged engine. Studies of the effect of payload, tire efficiency, and drag coefficient on vehicle performance are also conducted, as well as a performance comparison between manual and automatic transmisisons. It is concluded that the VPS code can provide good predictions of vehicle fuel economy, and thus is a useful tool in designing and evaluating vehicle powertrains.
Develoment and use of a vehicle powertrain simulation for fuel economy and performance studies
Entwicklung und Anwendung der Kraftübertragungssimulation zur Untersuchung des niedrigen Kraftstoffverbrauchs und der Leistung von Fahrzeugen
SAE-Papers ; Mar ; 1-12
1990
12 Seiten, 20 Bilder, 1 Tabelle, 4 Quellen
Aufsatz (Konferenz)
Englisch
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