A three-pulse fuel injection mode has been studied by implementing two-input-two-output (2I2O) control of both peak combustion pressure (Pmax) and indicated mean effective pressure (IMEP). The engine test results show that at low engine speed, the first main injection duration and the second main injection duration are able to be used to control Pmax and IMEP respectively. This control is exercised within a limited but promising area of the engine map. However, at high engine speed, Pmax and IMEP are strongly coupled together and then can not be separately controlled by the two control variables: the first and the second main injection duration. A simple zero-dimensional (0D) combustion model together with correlation analysis method was used to find out why the coupling strength of Pmax and IMEP increases with engine speed increased.It was found that the closer coupling of Pmax and IMEP at higher engine speeds is due to the following reasons: (i) combustion occupied a larger crank angle; (ii) there was lower maximum heat release rate and (iii) there was a stronger correlation between IMEP and manifold air pressure (MAP) and promoted by the turbocharger.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Combustion Model Based Explanation of the Pmax and IMEP Coupling Phenomenon in Diesel Engine


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Winward, Edward (Autor:in) / Stobart, Richard (Autor:in) / Steffen, Thomas (Autor:in) / Yang, Zhijia (Autor:in)

    Kongress:

    SAE 2014 World Congress & Exhibition ; 2014



    Erscheinungsdatum :

    2014-04-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    A Predictive Model of Pmax and IMEP for Intra-Cycle Control

    Winward, Edward / Stobart, Richard / Steffen, Thomas et al. | SAE Technical Papers | 2014


    Experimental Analysis of IMEP in a Rotary Combustion Engine

    Schock, H. J. / Meng, P. R. / Rice, W. J. | SAE Technical Papers | 1981


    Experimental Analysis of IMEP in a Rotary Combustion Engine

    Schock,H.J. / Rice,W.J. / Meng,P.R. et al. | Kraftfahrwesen | 1981


    The Caterpillar imep Meter and Engine Friction

    Brown, William L. | SAE Technical Papers | 1973


    Effect of Pmax Rise in Diesel Engine on Sealing Region between Bores in Cylinder Head Gasket and Its Treatment

    Udagawa, T. / Ko, H.-N. / Society of Automotive Engineers of Japan | British Library Conference Proceedings | 2006