Measurements were made of the engine performance and the concentrations of NO and NO sub 2 released in the exhaust gas in the case of a water-cooled, four-cycle, precombustion-chamber type diesel engine using gas oil and unleaded gasoline as the fuel under various operating conditions. It is found that in a precombustion-chamber type engine it is possible to achieve a significant reduction of NO concentration without deteriorating the engine performance by driving the engine under conditions of retarded injection timing. In this case, moreover, it is possible to achieve smoother combustion and reduced exhaust smoke, provided that the injection timing is not extremely retarded. In addition, it is possible to reduce the NO concentration by decreasing various characteristics governing the smoothness of combustion, for instance, the maximum combustion pressure, rate of pressure rise, rate of heat release, etc. Given the same values of maximum combustion pressure, rate of pressure rise etc, the NO concentration in the case of unleaded gasoline is found to be lower than in the case of gas oil.

  • Corporate Authors:

    Japan Society of Mechanical Engineers

    Shinanomachi Rengakan Building, 5th Floor, Shinanomachi 35, Shinjuku-ku
    Tokyo,   Japan  160-0016
  • Authors:
    • Murayama, T
  • Publication Date: 1974-4

Media Info

  • Pagination: p. 56-64
  • Serial:
    • JSME Bulletin
    • Issue Number: 6
    • Publisher: Japan Society of Mechanical Engineers

Subject/Index Terms

Filing Info

  • Accession Number: 00127612
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Dec 16 1975 12:00AM