Nowadays, automobile manufacturers are focusing on reducing exhaust-gas emissions because of their harmful effects on humans and the environment, such as global warming due to greenhouse gases. Direct injection combustion is a promising technology that can significantly improve fuel economy compared to conventional port fuel injection spark ignition engines. However, previous studies indicate that relatively high levels of nitrogen oxide (NOx) emission were produced with gasoline fuel in a spray-guided-type combustion system as a result of the stratified combustion characteristics. Because a lean-burn engine cannot employ a three-way catalyst, NOx emissions can be an obstacle to commercializing a lean-burn direct injection engine.Liquefied petroleum gas (LPG) fuel was proposed as an alternative for reducing NOx emission because it has a higher vapor pressure than gasoline and decreases the local rich mixture region as a result of an improved mixing process. The combustion and emission characteristics of LPG and gasoline fuels were compared in a multi-cylinder engine with a spray-guided-type combustion system. A lower NOx emission value could be achieved with a single injection of LPG, while the hydrocarbon emissions increased.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Emission Characteristics of Gasoline and LPG in a Spray-Guided-Type Direct Injection Engine


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2013 World Congress & Exhibition ; 2013



    Publication date :

    2013-04-08




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Low Emission Combustion for Spray-guided Direct Injection Gasoline Engine

    Miyagawa, H. | British Library Conference Proceedings | 2006


    Spark Discharge Behavior in a Spray-Guided Gasoline Direct Injection Engine

    Tanaka, D. / Sato, K. / Yamamoto, S. et al. | British Library Conference Proceedings | 2009


    Design and development of a spray-guided gasoline direct injection engine

    Chang,W.S. / Kim,Y.N. / Kong,J.K. et al. | Automotive engineering | 2007


    Spray-Guided Direct Injection for Boosted Gasoline Engines

    King, Jason / Feulner, Peter | Springer Verlag | 2013


    Motorcycle Engine with a New Concept of Spray Guided Gasoline Direct Injection

    Stan, C. / Stanciu, A. | British Library Conference Proceedings | 2005