A single-cylinder direct-injection diesel engine with a displacement typical of passenger car practice was built to incorporate low-heat-rejection (LHR) components. These included a silicon-nitride piston cap, an Inconel firedeck, and stainless steel portliners, all backed by air gaps. In addition, a water-cooled engine with the same geometry was tested to provide a baseline. The LHR engine was tested with three different injector spray-tip geometries to assess the sensitivity of the results to the injection system. The LHR engine was worse than the baseline engine in most respects: it demonstrated higher fuel consumption and higher NO and HC emissions, and it rejected more heat at a given operating condition. The exhaust smoke emissions from both engines were similar, with the LHR engine having a small advantage at 2000 r/min. Destructive failure of the piston cap occurred after roughly 60 hours of operation.


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    Title :

    Evaluation of a Selectively-Cooled Single-Cylinder 05-L. Diesel Engine


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1990



    Publication date :

    1990-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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