A new fuel economy optimization method for parallel hybrid electric vehicles with continuously variable transmission( CVT) is proposed in this paper. The method maximizes overall system efficiency while meeting desired performances. Firstly, effective specific fuel consumption (ESFC) is defined as effectively consumed fuel per output power-hour from a hybrid propulsion system, in which battery output power is transformed into an equivalent amount of fuel. Hence, hybrid optimal operation line(HOOL) is derived based on ESFC as optimal operation line(OOL) is found based on specific fuel consumption( SFC) in a conventional internal combustion engine(ICE) vehicle with CVT. From HOOL, optimal combinations of control variables, CVT gear ratio, motor torque and engine throttle, are obtained versus vehicle velocity, battery state of charge and required power. A simulation study with the proposed optimization method is performed to prove its validity.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Fuel Economy Optimization for Parallel Hybrid Vehicles with CVT


    Additional title:

    Sae Technical Papers


    Contributors:
    Kim, Chunho (author) / NamGoong, Eok (author) / Kim, Hyunsoo (author) / Lee, Seongchul (author) / Kim, Talchol (author)

    Conference:

    International Congress & Exposition ; 1999



    Publication date :

    1999-03-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Fuel Economy Optimization for Parallel Hybrid Vehicles with CVT

    Kim, C. / NamGoong, E. / Lee, N. et al. | British Library Conference Proceedings | 1999


    Fuel economy optimization of parallel hybrid vehicles with continuously variable transmission

    Kim,C. / NamGoong,E. / Lee,S. et al. | Automotive engineering | 1999




    Optimal control of fuel economy in parallel hybrid electric vehicles

    Pu,J. / Yin,C. / Shanghai Automotive Industry,SAIC,CN et al. | Automotive engineering | 2007