This paper presents a study of the performance of a lean burn, natural gas-fuelled, naturally aspirated, spark ignition engine for an E class vehicle. Engine performance and exhaust emissions (NO, CO, and UHC) data are first discussed. An energy balance of the engine operating at different loads and air-fuel ratios is then presented, and used to explain why engine efficiency varies with air-fuel ratio. Finally, the hot start drive cycle CO2e (CO2 equivalent) emissions are estimated for a vehicle with this engine. This shows a potential for significant reduction in vehicle greenhouse gas emissions compared to an equivalent gasoline-fuelled vehicle.


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    Title :

    Lean Burn Performance of a Natural Gas Fuelled, Port Injected, Spark Ignition Engine


    Additional title:

    Sae Technical Papers



    Conference:

    SAE 2012 World Congress & Exhibition ; 2012



    Publication date :

    2012-04-16




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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