Several types of power-split hybrid transmissions are outlined and the strengths and weaknesses of typical compound power-split prototype designs are summarized in this paper. Based on an modified Ravigneaux gear set, a novel compound power-split hybrid transmission with compact mechanical structure is presented, its dynamic and kinematic characteristics in equations and operating modes are described, and then equivalent lever diagrams are used to investigate the proposed compound power-split device. Control strategies in different operating modes are discussed with the simplified combined lever diagram, and a global optimization method is implemented to find the optimum operation point for the hybrid powertrain. To evaluate the fuel economy of a hybrid car equipped with this hybrid transmission, a forward powertrain simulation model is developed and real vehicle performance tests are conducted in the chassis dynamometer. Simulations and test results show that the proposed hybrid transmission can improve the efficiency of the powertrain and demonstrate lower fuel consumptions than the corresponding conventional vehicle. We conclude that the most effective strategy for reducing the cost of vehicle powertrain manufacturing, decreasing the difficulty of control and improving vehicle fuel efficiency during city driving is to employ the new compound power-split hybrid transmission.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Development of a Compact Compound Power-Split Hybrid Transmission Based on Altered Ravigneaux Gear Set


    Additional title:

    Sae Technical Papers


    Contributors:
    Wang, Chen (author) / Zhang, Tong (author) / Dai, Xianjun (author) / Yuan, Xiyue (author) / Zhao, Zhiguo (author)

    Conference:

    SAE 2014 World Congress & Exhibition ; 2014



    Publication date :

    2014-04-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Powertrain with compound-split hybrid transmission having a reduced ravigneaux gear set

    GV RAVIKANTH / RAVICHANDRAN SRIRAM / NAIDU KUMPATLA V et al. | European Patent Office | 2017

    Free access

    Antriebsstrang mit Compound-Split Hybridgetriebe mit einem reduzierten Ravigneaux-Zahnradsatz

    GV RAVIKANTH / RAVICHANDRAN SRIRAM / NAIDU KUMPATLA V et al. | European Patent Office | 2017

    Free access

    Design, Analysis, Simulation and Development of a Ravigneaux Gear-Train

    Moulick, Enanko / Wani, Kiran / Kapoor, Karan et al. | British Library Conference Proceedings | 2019


    Dual-motor driving system based on Ravigneaux planetary gear train

    TIAN YANG / JI XIAOYU / WEN GUILIN et al. | European Patent Office | 2022

    Free access

    Dual-motor driving system based on Ravigneaux planetary gear train

    TIAN YANG / WANG HAODONG / LIU YUEWEN et al. | European Patent Office | 2022

    Free access