초록 ▼

A fuel injection control strategy and system for engines for maintaining good performance under normal running conditions and also for providing cylinder engine speed slow-down under abnormal conditions without necessitating cylinder skipping except in extreme cases. This control is obtained primari

A fuel injection control strategy and system for engines for maintaining good performance under normal running conditions and also for providing cylinder engine speed slow-down under abnormal conditions without necessitating cylinder skipping except in extreme cases. This control is obtained primarily by retarding injection timing and/or reducing injection duration. Adjustment in spark timing may also be incorporated along with this routine.

대표청구항 ▼

[ What is claimed is:] [1.] A two cycle, crankcase compression, direct cylinder injected internal combustion engine comprised of an engine body defining at least one cylinder bore in which a piston reciprocates, a cylinder head affixed to one end of said engine body for closing said cylinder bore an

[ What is claimed is:] [1.] A two cycle, crankcase compression, direct cylinder injected internal combustion engine comprised of an engine body defining at least one cylinder bore in which a piston reciprocates, a cylinder head affixed to one end of said engine body for closing said cylinder bore and defining with said piston and said cylinder bore a combustion chamber, a crankcase chamber is formed at the other end of said cylinder bore, at least one scavenge port interconnecting said crankcase chamber with said combustion chamber and opened and closed by the reciprocation of said piston in said cylinder bore for admitting an air charge to said combustion chamber, at least one exhaust port formed in said cylinder bore for discharging burned combustion products from said combustion chamber, said exhaust port being opened and closed by the reciprocation of said piston in said cylinder bore, a fuel injector for spraying fuel directly into said combustion chamber for combustion therein, means for sensing an abnormal condition, and means for reducing engine speed in response to the sensing of said abnormal condition by effecting at least one of retarding injection timing and reducing injection.