A description is given of a program to define and evolve an accessory drive system that will minimize engine driven accessory power consumption and significantly improve the fuel economy of a 1979 internal combustion engine passenger automobile. The program was initiated in June 1974, and Phase IV was completed in September 1976, having met all objectives. A reliable and efficient mechanical variable ratio belt drive was selected from a trade study as the optimum drive for development. The drive was installed in a 1975 Mustang II automobile, extensively tested, and demonstrated an overall fuel economy improvement of 4 to 10% depending on driving conditions. The accessory drive also provided improved vehicle performance, reduced emissions, reduced vehicle generated noise, improved accessory life, and a slight weight decrease. The speed control feature of the accessory drive permits resizing of the engine cooling system fan and radiator, use of a smaller alternator, and deletion of the power steering fluid cooler as well as miscellaneous pulleys and brackets. Demonstrated performance and cost analysis have shown that both the manufacturer and consumer will benefit from an OEM installation of an accessory drive system. Study efforts to define more efficient energy usage of automotive accessories is in progress. (ERA citation 02:057074)


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    Improving Automotive Fuel Economy With Accessory Drives

    Struttman,D.R. / AiResearch Manuf.,Phoenix,US | Kraftfahrwesen | 1976


    Nr. 4171

    DataCite | 1925


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