Patent ID: 6729304
Filing Date: 2004-05-04
Classification: F01L,F02D,Y02T

Abstract:
A fuel injection control system for an internal combustion engine including intake valves, intake cams for opening and closing the intake cams, respectively, exhaust valves, exhaust cams for opening and closing the exhaust cams, respectively, and a crankshaft connected to the intake cams and the exhaust cams, the engine being capable of changing at least one of a cam phase of each intake cam and a cam phase of each exhaust cam, relative to a crankshaft of the engine, to thereby change a valve overlap period, and causing fuel injection toward intake ports of the engine,the fuel injection control system comprising: valve overlap change amount-detecting means for detecting an amount of change in the valve overlap period; wall surface temperature-detecting means for detecting a wall surface temperature of the intake ports; operating condition-detecting means for detecting operating conditions of the engine; fuel injection amount-setting means for setting a fuel injection amount according to the detected operating conditions; and fuel injection amount-correcting means for correcting the set fuel injection amount according to the detected amount of change in the valve overlap period and the detected wall surface temperature of the intake ports.