COMBUSTION PROCESS FOR ENGINE OF SPARK IGNITION FUEL INJECTION TYPE

摘要

Process minimizes the production of undesirable elements in the engine exhaust by operating the engine with an overall rich mixture air/fuel ratio combustion without air throttling at full load operation, and a progressive fuel supply cutback as the load decreases without air throttling until a desired air-fuel ratio leanness is reached, at which point air throttling is introduced to maintain the air/fuel ratio constant regardless of further decrease in load.