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Optimum SI Engine Based Powertrain Systems for Lightweight Passenger Cars
Technical Paper
2000-01-0827
ISSN: 0148-7191, e-ISSN: 2688-3627
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Event:
SAE 2000 World Congress
Language:
English
Abstract
This paper compares the fuel consumption of a lightweight passenger car for three different SI engine concepts, all with rated power of about 40 kW: a classical SI engine with moderate maximum speed, a low-displacement but high-speed engine that exploits the maximum allowed mean-piston speed and a low-displacement but highly supercharged engine with moderate maximum speed. All engines are simulated with a thermodynamic process simulator, the results of the supercharged version are validated with experiments. For each engine, a CVT and an automated gearbox is considered. Fuel consumption is estimated with a quasi-static driving cycle simulator which is based on engine fuel consumption maps and physical models of the vehicle with all its relevant subsystems. The simulations are performed for constant vehicle speed as well as for US and European driving cycles. The results show the advantages and disadvantages of the different engine and transmission concepts regarding their efficiency in vehicle use.
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Citation
Soltic, P. and Guzzella, L., "Optimum SI Engine Based Powertrain Systems for Lightweight Passenger Cars," SAE Technical Paper 2000-01-0827, 2000, https://doi.org/10.4271/2000-01-0827.Also In
SAE 2000 Transactions Journal of Passenger Cars - Mechanical Systems
Number: V109-6; Published: 2001-09-15
Number: V109-6; Published: 2001-09-15
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