Patent ID: 6065445
Filing Date: 2000-05-23
Classification: F02B,F02D,Y02T

Abstract:
A 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, at least one intake port for admitting an air charge to said combustion chamber, at least one exhaust port for discharging burned combustion products from said combustion chamber, a fuel injector for spraying fuel directly into said combustion chamber for combustion therein, a combustion condition sensor provided in proximity to said fuel injector for determining the air/fuel ratio in said combustion chamber, and a feedback control system for controlling the initiation of fuel injection and the duration of fuel injection based upon the output from said combustion condition sensor to maintain the desired fuel/air ratio, said feed back control being effective to control the fuel/air ratio in at least one engine running condition primarily by adjusting only one of the timing of beginning of fuel injection and the duration of fuel injection in order to maintain the desired fuel/air ratio.