Automotive engineers are continuously exploring various engine, transmission, and chassis technologies to increase overall vehicle performance, fuel economy, and safety. One promising powertrain concept is the continuously variable transmission (CVT) which offers a continuum of infinitely variable gear ratios between established minimum and maximum limits. This continuous gear ratio spectrum can increase the overall powertrain efficiency and eliminate the unwanted jerks associated with manual and automatic transmissions. Although basic CVT designs may have difficulty with high torque/low speed requirements, a hybrid power split continuously variable transmission configuration offers both fixed gearing and adjustable pulleys to satisfy driving demands. The effective control of the variable radius pulleys allows the designation of engine torque/speed to improve overall system performance for a given operating condition. In the paper, the fundamental components, configuration, and kinematics of a power split CVT are discussed. A suite of mathematical models is presented which includes the internal combustion spark ignition engine, clutch, transmission differential, and chassis dynamics. The problem of wheel speed control of a CVT equipped vehicle is considered. An adaptive nonlinear controller is designed to ensure asymptotic tracking of the desired wheel speed.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Nonlinear control of a continuously variable transmission (CVT) for hybrid vehicle powertrains


    Contributors:
    Setlur, P. (author) / Wagner, J.R. (author) / Dawson, D.M. (author) / Samuels, B. (author)

    Published in:

    Publication date :

    2001


    Size :

    6 Seiten, 19 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





    Torque Control Strategy for Continuously Variable Transmission-Based Powertrains

    Fuchs, R. / National Tsing Hua University | British Library Conference Proceedings | 2006


    ELECTRIC HYBRID POWERTRAINS HAVING A BALL-TYPE CONTINUOUSLY VARIABLE TRANSMISSION

    DAVID JEFFREY M / MILLER TRAVIS J | European Patent Office | 2019

    Free access

    HYBRID VEHICLE WITH CONTINUOUSLY VARIABLE TRANSMISSION

    KATO YOSHIAKI | European Patent Office | 2015

    Free access

    Hybrid powertrains

    HUQ FAZUL | European Patent Office | 2020

    Free access