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Design for Fuel Economy - The New GM Front Drive Cars
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1979 by SAE International in United States
Annotation ability available
The techniques for optimization of fuel economy in the design of the new GM 1980 “X” cars involved reduction of road load and parasitic losses combined with power train matching to the vehicle as a system. Computer simulations identified potential fruitful areas of economy improvement. The method of establishing meaningful targets for weight, aerodynamics and tire losses is described. Matching of engine displacement, torque converter characteristics and transmission and axle gearing to the vehicle system made possible the minimum engine size consistent with target performance requirements. It is concluded that the methods employed made possible a high level of fuel efficiency relative to both vehicle size and performance.
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CitationPorter, F., "Design for Fuel Economy - The New GM Front Drive Cars," SAE Technical Paper 790721, 1979, https://doi.org/10.4271/790721.
- Waters W. C., “General Purpose Automotive Vehicle Performance and Economy Simulator”, Paper 720043, presented at SAE Automotive Engineering Congress, Detroit, Michigan, January, 1972.
- Nedley A. L., “An Effective Aerodynamic Program in the Design of a New Car”, Paper 790724, presented at SAE Passenger Car Week, Detroit, Michigan, June, 1979.
- Tarpinian H. D, Mishory J. Dr., Nybakken G. H. Dr., “Fuel Saving Passenger Tire”, Paper 790726, presented at SAE Passenger Car Week, Detroit, Michigan, June, 1979.
- Koivunen E., Lebar P. A. Jr., “New Automatic Transmission for Improved Fuel Economy - General Motors THM 125”, Paper 790725, presented at SAE Passenger Car Week, Detroit, Michigan, June, 1979.
- Laise T. D., Mellin R. C., Pryjmak B. I., Longhouse R. E., “Electric Cooling Fan with High Ram Air Flow - A Fuel Economy Improvement” Paper 790722, presented at SAE Passenger Car Week, Detroit, Michigan, June, 1979.
- Hoffman, C. T. Jr., Beurmann D. J., “Measurement and Reduction of On-Road Brake Drag”, Paper 790723, presented at SAE Passenger Car Week, Detroit, Michigan, June, 1979.