PERFORMANCE AND NOX EMISSIONS MODELING OF A JET IGNITION PRECHAMBER STRATIFIED CHARGE ENGINE

The development of a cycle simulation model for the jet ignition prechamber stratified charge engine is described. Given the engine geometry, load, speed, air-fuel ratios and pressures and temperatures in the two intakes, flow ratio and a suitable combustion model, the cycle simulation predicts engine indicated efficiency and NO emissions. The relative importance of the parameters required to define the combustion model are then determined. The relative contribution of the prechamber NO to total exhaust NO is then examined, and in the absence of EGR, found to be the major source of NO for overall air-fuel ratios leaner then 22:1. /GMRL/

• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Hires, S D
  • Ekchian, A
  • Heywood, J B
  • TABACZYNSKI, R J
  • Wall, J C
• Publication Date: 1976-2

Media Info

• Pagination: 29 p.

Subject/Index Terms

• TRT Terms: Combustion; Exhaust gases; Fuel air mixtures; Ignition systems; Nitric oxide; Nitrogen oxides; Simulation; Stratified charge engines
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00145250
• Record Type: Publication
• Report/Paper Numbers: SAE 760161
• Files: TRIS
• Created Date: May 31 1977 12:00AM