Diesel engine emissions of NOX and particulate matter (PM) can be reduced simultaneously through the use of high levels of exhaust gas recirculation (EGR) to achieve low temperature combustion (LTC). These reductions are highly dependent on the oxygen concentration in the combustion chamber. This paper investigates varying the intake pressure to adjust the oxygen concentration and the corresponding impacts on emissions for EGR rates up to 65%. An engine operating condition corresponding to 600 kPa gross-indicated mean effective pressure (gimep) at 2500 rpm is investigated using a 0.51-liter single-cylinder high-speed direct-injection (HSDI) diesel engine. This facility is equipped with independent control of the intake pressure and temperature, the EGR rate and the exhaust back pressure. This work focuses on investigating the potential of increasing EGR tolerance at medium load by increasing the boost pressure from 120 kPa to 180 kPa (absolute), while keeping PM and NOX emissions at acceptable levels. This paper also presents an investigation into the effects of injection timing and injection pressure on diesel LTC. The combined effects of EGR rate and intake pressure on PM, NOX and HC emissions are reported along with gross-indicated specific fuel consumption (gisfc).


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    The Effects of Intake Pressure on High EGR Low Temperature Diesel Engine Combustion


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    SAE 2010 Powertrains Fuels & Lubricants Meeting ; 2010



    Erscheinungsdatum :

    2010-10-25




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





    Effect of Intake Composition on Combustion and Emission Characteristics of DI Diesel Engine at High Intake Pressure

    Li, J. / Jae Ou Chae / Park, S. B. et al. | British Library Conference Proceedings | 1997


    Effect of Intake Composition on Combustion and Emission Characteristics of DI Diesel Engine at High Intake Pressure

    Paik, H. J. / Park, J. K. / Chae, Jae Ou et al. | SAE Technical Papers | 1997


    Intake Flow Effects on Combustion and Emissions in a Diesel Engine

    Rutland, C. J. / Fuchs, T. R. | SAE Technical Papers | 1998


    Intake flow effects on combustion and emissions in a Diesel engine

    Fuchs,T.R. / Rutland,C.J. / Univ.of Wisconsin-Madison,US | Kraftfahrwesen | 1998