This paper presents a general discussion of automatic transmission parasitic losses and efficiency characteristics. Efficiency characteristics of the three major automatic transmission components - pump, torque converter, and gearbox - and their contribution to the transmission total torque losses are examined. A data reduction method for isolating gearbox torque losses from total transmission losses is also described. The information presented is based on pump, torque converter, and transmission testing performed at SwRI for Ford Motor Company. Test data was used to perform analytical fuel economy benchmarking studies. Testing included 13 transmissions manufactured by American, European, and Japanese manufacturers for 3.0-5.8L truck applications.


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    Titel :

    Automatic transmission efficiency characteristics and gearbox torque loss data regression techniques


    Weitere Titelangaben:

    Wirkungsgradcharakteristiken des automatischen Getriebes. Bestimmung der Drehmomentverluste im Getriebe mit der Regressionstechnik


    Beteiligte:
    Kluger, M. (Autor:in) / Greenbaum, J.J. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1993


    Format / Umfang :

    7 Seiten, 18 Bilder, 2 Tabellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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    Greenbaum, Joseph J. / Kluger, Michael | SAE Technical Papers | 1993


    Automatic transmission efficiency characteristics and gearbox torque data regression techniques

    Kluger,M / Greenbaum,J.J. / Southwest Research Inst.,San Antonio,US et al. | Kraftfahrwesen | 1993


    Measuring Gearbox Torque Loss

    Schmidt, L. F. | NTRS | 1986


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