A wet multi-plate clutch, designated as the “starting clutch”, is used to replace the torque converter in the automatic transmission in order to improve vehicle fuel economy. The transmission ratio spread must be increased to compensate for the torque multiplication of the torque converter and avoid penalizing the 0-60 mph acceleration performance. The main challenge of this concept is the control of the starting clutch to ensure acceptable vehicle drivability. This paper describes the system of a five-speed starting clutch automatic transmission vehicle and shows vehicle test results. Vehicle test data show that (i) the fuel economy benefit of the starting clutch is significant, and (ii) a starting clutch transmission can be designed to equal or better the 0-60 mph acceleration performance of a torque converter transmission by proper selection of the gear ratios.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A Five-Speed Starting Clutch Automatic Transmission Vehicle


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2003 World Congress & Exhibition ; 2003



    Publication date :

    2003-03-03




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    A five-speed starting clutch automatic transmission vehicle

    Kao,C.K. / Smith,A.L. / Usoro,P.B. et al. | Automotive engineering | 2003


    2003-01-0248 A Five-Speed Starting Clutch Automatic Transmission Vehicle

    Kao, C.-K. / Smith, A. L. / Usoro, P. B. et al. | British Library Conference Proceedings | 2003


    Fuel economy and performance potential of a five-speed 4T60-E starting clutch automatic transmission vehicle

    Kao,C.K. / Smith,A.L. / Usoro,P.B. et al. | Automotive engineering | 2003


    Fuel Economy and Performance Potential of a Five-Speed 4T60-E Starting Clutch Automatic Transmission Vehicle

    Smith, Anthony L. / Kao, Chi-Kuan / Usoro, Patrick B. | SAE Technical Papers | 2003


    2003-01-0246 Fuel Economy and Performance Potential of a Five-Speed 4T60-E Starting Clutch Automatic Transmission Vehicle

    Kao, C.-K. / Smith, A. L. / Usoro, P. B. et al. | British Library Conference Proceedings | 2003