INVESTIGATION ON COMBUSTION IN MEDIUM SPEED DIESEL ENGINES USING CONSTANT VOLUME COMBUSTION CHAMBER

During recent years there has been a marked increase in the cylinder pressure at start of injection in medium-speed marine diesel engines. This increase demands a basic and systematic investigation on the combustion processes of diesel spray in the high pressure and high temperature charge. From this standpoint, the authors constructed the constant volume combustion chamber whose volume and shape are the same as the top clearance volume of a practical diesel engine. The systematic and independent experimental conditions of fuel injection and charge were chosen in the experiments. Especially, the pressure of charge was varied up to the higher range than in the other investigations. This paper presents the following experimenal results: (1) Characteristics of flames; (2) Position of appearance of first visible flame; (3) Illumination delay and ignition delay; (4) Rate of heat release; (5) Flame growth velocity during pre-mixed flame burning period. These experimental results have a close relation to each other. And it is distinctive that the pressure of charge has little effect on the illumination delay and ignition delay in the range above 3.92 MPa.

  • Corporate Authors:

    Society of Naval Architects of Japan

    15-16, Toranomon, 1-chome, Minato-ku
    Tokyo,   Japan 
  • Authors:
    • Fujimoto, H
    • Sato, G T
    • Matsuzawa, T
  • Publication Date: 1979

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Filing Info

  • Accession Number: 00311572
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 26 1980 12:00AM