Despite the increasingly stringent emissions legislation, users and owners of commercial diesel vehicles are continually demanding that each new engine generation is more economical than the previous one. This is especially important for commercial vehicles where the majority of engines are in the 1-2ltr./cyl. class.The demands are being reflected in new engine designs with lower friction and improved structural stiffness, together with fuel systems having increased pressure capability, higher spill rates, injection rate shaping and advanced control features.These fuel system requirements have led to a variety of new fuel injection systems and in the search for increased injection pressure these fuel systems have placed greater demands on the engine, especially in areas such as the cylinder head and fuel system drive, sometimes with adverse effects on the combustion and fuel injection system induced mechanical noise.This paper assesses the conflict between NOx, particulates and fuel economy and the demands placed on combustion systems, fuel injection systems and noise. It also looks at various fuel injection systems under development and their effects on engine noise levels and noise quality.


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    Title :

    The Impact of Emissions and Fuel Economy Requirements on Fuel Injection System and Noise of HD Diesel Engines


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1998



    Publication date :

    1998-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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