Although the brake thermal efficiency of the state-of-the-art Atkinson-cycle hybrid engines have reached 41%, such engines typically have a low specific power. The ideal hybrid engines for SUVs should have a high thermal efficiency as well as a high specific power. Jiangling Motors recently developed a 4-cylinder, 1.5L TGDI hybrid Miller engine for powering mid-size SUVs, which has achieved 42% brake thermal efficiency, 19.3-bar BMEP, and 73.3-kW/L specific power. The engine has a high compression ratio, a long stroke, and is equipped with a low-pressure EGR system. It can operate with the stoichiometric mixture on the full engine map, with the help of the water-cooled exhaust manifold and the intelligent thermal management system.


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    Title :

    Development of A 1.5L High-Efficiency and High-Specific-Power Hybrid Engine


    Additional title:

    Sae Technical Papers


    Contributors:
    Chen, Bin (author) / Zeng, Cuiwei (author) / Teng, Ho (author) / Zeng, Honglian (author) / Cao, Liming (author) / Miao, Ruigang (author) / Liao, Shanbin (author) / Ouyang, Xianlin (author) / Cai, Xingqi (author) / Yang, Yanhua (author)

    Conference:

    SAE 2022 Vehicle Electrification and Powertrain Diversification Technology Forum ; 2022



    Publication date :

    2022-10-28




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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