A Continuously Variable Transmission for Automotive Fuel Economy 751180
The use of a high efficiency, continuously variable transmission (CVT) with a wide ratio range is required in order to operate an automotive engine at minimum brake specific fuel consumption (bsfc). Such operation will increase fuel economy from 20-40% over conventional practice.
This paper describes a 12:1 ratio range CVT, and shows a simplified control system capable of allowing a vehicle to operate with the engine at or very near minimum bsfc under all demand power conditions for optimized fuel economy.
Also described is the effect such a transmission has on vehicle performance and raises the possibility of reducing engine size to maintain normal performance, and further increase fuel economy.
Citation: Kraus, J., Kraus, C., and Gres, M., "A Continuously Variable Transmission for Automotive Fuel Economy," SAE Technical Paper 751180, 1975, https://doi.org/10.4271/751180. Download Citation
Author(s):
J. H. Kraus, C. E. Kraus, M. E. Gres
Affiliated:
Excelermatic, Inc.
Pages: 10
Event:
1975 Automotive Engineering Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1975 Transactions-V84-A
Related Topics:
Continuously variable transmissions
Fuel economy
Fuel consumption
Vehicle performance
Control systems
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