Automotive Engine Combustion with Excess Air.

摘要

Lean burn,stratified charge,and Diesel engines all involve combustion in the presence of excess air. All have a potential for improved efficiency with lower emissions,in comparison with the conventional park-ignition engine. An experimental laboratory study of combustion with excess air under conditions simulating the reciprocating engine environment has been initiated. A single pulse,compression-expansion machine has been designed,fabricated,and assembled. Initial cold (without combustion) experiments have been conducted to determine flow patterns within the combustor with particular attention to the phenomenon of vortex rollup. In support of the single pulse combustor effort, a number of theoretical,experimental,and engine tasks have been undertaken and are briefly reported in this interim progress report.