A study was made of the mechanism of exhaust smoke formation in diesel engines for the purpose of devising a method of reducing this smoke formation. It is found that the dominant cause of the formation of exhaust smoke in a diesel engine is the rate of air utilization and flame cooling. The former controls the amount of carbon particles formed, while the latter affects the combustion of the carbon particles. An improvement in the rate of air utilization and the removal of factors which prevent the combustion of carbon particles are necessary in order to decrease the amount of exhaust smoke. Fuel additives can reduce the smoke density. In this case, there is no differences in the engine performance, but the maximum power does not improve. On the other hand, if light fuel with a cetane number not as low as that of undoped gasoline is used in a precombustion-chamber type engine, auxiliary methods are almost unnecessary. In this case exhaust smoke decreases by a large margin, and smoke limited increase in power is possible.

  • Corporate Authors:

    Japan Society of Mechanical Engineers

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

Media Info

  • Pagination: p. 22-32
  • Serial:
    • JSME Bulletin
    • Issue Number: 6
    • Publisher: Japan Society of Mechanical Engineers

Subject/Index Terms

Filing Info

  • Accession Number: 00127614
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Dec 16 1975 12:00AM