With the aim of improving the energy efficiency of conventional vehicles, this paper proposes a pneumatic hybrid engine concept, which features regenerative braking and compressed-air-assisted cranking functions. In the regenerative braking mode, the engine works as a two-stroke compressor and converts the kinematic energy of the vehicle into compressed air. In the two-stroke air motor mode, a throttle valve in the intake manifold is used to block the ambient air, and an electropneumatic solenoid valve is employed to control the compressed-air injection. The compressor mode is modelled on the basis of thermodynamics and gas dynamics theories and is improved according to the bench test results of a single-cylinder engine converted from a two-cylinder diesel engine. Transient engine cranking tests are also conducted and are discussed. Urban driving-cycle simulation results show that the fuel consumption of a light-duty vehicle with a pneumatic hybrid system can be reduced by 8%.


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    Titel :

    Research on a pneumatic hybrid engine with regenerative braking and compressed-air-assisted cranking


    Beteiligte:
    Wang, Lei (Autor:in) / Li, Dao-fei (Autor:in) / Xu, Huan-xiang (Autor:in) / Fan, Zhi-peng (Autor:in) / Dou, Wen-bo (Autor:in) / Yu, Xiao-li (Autor:in)


    Erscheinungsdatum :

    2016-02-01


    Format / Umfang :

    17 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch







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