A promising way of controlling combustion in a diesel engine is based on separate delivery of fuel and an auxiliary combustion chamber or heat accumulator. Fuel is delivered initially through an auxiliary nozzle to the auxiliary combustion chamber and, after a time-lag, the main injection is made through the main nozzle in the main combustion chamber. The auxiliary chambers can be pre-combustion chambers and other types, but their volume should be relatively small, for example in the range 2-6%. The proportion of fuel in the initial delivery is 5-15% of the total full-load fuel supply. The compression ratio epsilon equals 12-14 at any running speed and with any grade of fuel. Special feature of the combustion process in the main chamber is that the main charge of fuel is ignited almost immediately it leaves the nozzle and the combustion speed is high. This is achieved by preparing the air charge in the main chamber, by forming numerous flame centers, raising the air temperature and increasing turbulence by injecting fuel into the auxiliary chamber.

  • Corporate Authors:

    Engineering Research Association

    Melton Mowbray
    Leicestershire,   England 
  • Authors:
    • Svobodov, V N
  • Publication Date: 1972

Media Info

  • Features: References;
  • Pagination: p. 7-9
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00050077
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Jan 24 1976 12:00AM