Toward a comprehensive model for combustion in a direct injection stratified charge engine
In an attempt to gain understanding of and insight into the complex coupled processes that occur in a stratified charge engine, computational models that simulate the single-cylinder dynamics of an engine cycle are being developed. Among the important physical effects that need to be represented are fluid dynamics at low Mach number, two-phase flow (spray injection of fuel droplets), turbulence, the ignition process, chemistry (turbulent flame propagation, pollutant formation), wall heat transfer and the associated phenomenon of wall quenching, and moving boundary surfaces (valves and piston). Although emphasis is presently placed on the DISC engine, most of these effects are also of importance in other spark-ignition or diesel engines. The associated models are, therefore, quite generally applicable.
- Research Organization:
- Los Alamos Scientific Lab., NM (USA); General Motors Corp., Warren, MI (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6518874
- Report Number(s):
- LA-UR-78-3223; CONF-7811102-1
- Country of Publication:
- United States
- Language:
- English
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