IMPROVING THE PERFORMANCE AND FUEL CONSUMPTION OF A DUAL-CHAMBER STRATIFIED CHARGE SPARK IGNITION ENGINE. PROGRESS REPORT, DECEMBER 1, 1977--FEBRUARY 28, 1978

An improved model for the connecting nozzle between the prechamber and main chamber has resulted in the solution of mass conservation and spatial step size dependencey problems. The qualitative nature of the flow out of the prechamber is also in better agreement with the results of the photographic investigations. Effects of ignition location on the rate of combustion were investigated with the combustion model. Work on the intake gas dynamic model for the prechamber intake system was temporarily discontinued. The use of fuel additives has increased the luminosity of lean flames enabling increased quality of high speed motion pictures at engine speeds up to 1700 rpm. A new main chamber fuel injection system is being installed in order to increase accuracy of fuel air ratio measurements. (ERA citation 03:050621)

• Corporate Authors:

  University of Illinois, Urbana-Champaign

  Department of Mechanical and Industrial Engineering
  Urbana, IL  United States  61801

  Department of Energy

  1000 Independence Avenue, SW
  Washington, DC  United States  20585
• Authors:
  • SORENSON, S C
• Publication Date: 1978-2-28

Media Info

• Pagination: 17 p.

Subject/Index Terms

• TRT Terms: Additives; Combustion; Combustion chambers; Flames; Fuel air mixtures; Fuel consumption; Fuel injection; Fuel systems; Ignition; Mathematical models; Motor fuels; Nozzles; Performance; Research projects; Spark ignition engines; Stratified charge engines
• Uncontrolled Terms: Research programs
• Subject Areas: Energy; Highways; Research; Vehicles and Equipment;

Filing Info

• Accession Number: 00186401
• Record Type: Publication
• Source Agency: National Technical Information Service
• Contract Numbers: EC-77-S-02-4493
• Files: TRIS
• Created Date: Feb 27 1979 12:00AM