The functions, design and mode of operation of a new electronic control system for automatic transmissions for city buses are described. Apart from the dual-channel computer structure for safety functions used here for the first time for electronic transmission control, the principal features of the control unit are its capability of communication, its high level of self-diagnosis, and its modular structure. Furthermore, a new type of actuator has been developed in the form of pressure control solenoid valves. Gearshift programs depending on driving resistance reduce fuel consumption while ensuring optimum drivability. The control pressure required for maintaining a given target slip time is computed in advance with the aid of a simulation model of the transmission memorized in the electronic control unit. Deviations due to tolerances or aging are compensated by adaptive correction of the control pressure. The automatic adaptation to changing conditions leads to a constantly high level of comfort in respect of gearshifts over the entire lifetime.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    An Advanced Electronic Control and Diagnostic System for Automatic Transmission


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Truck & Bus Meeting & Exposition ; 1994



    Publication date :

    1994-11-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    An advanced electronic control and diagnostic system for automatic transmission

    Wuest,B. / Bek,M. / Voith,Heidenheim,DE | Automotive engineering | 1992


    An Advanced Electronic Control and Diagnostic System for Automatic Transmission

    Wust, B. / Bek, M. / SAE | British Library Conference Proceedings | 1994


    Electronic Control System of Automatic Transmission

    Chen, Yong | Springer Verlag | 2020


    DIAGNOSTIC DEVICE FOR AUTOMATIC TRANSMISSION

    AMANO NORIHIRA / HAMANO MASAHIRO | European Patent Office | 2021

    Free access

    The Diagnostic System of A – 604 Automatic Transmission

    Czaban, Jaroslaw / Szpica, Dariusz | Tema Archive | 2014