Patent ID: 6722342
Filing Date: 2004-04-20
Classification: F02B,F02D,Y02T

Abstract:
A fuel injection control system for an internal combustion engine, for controlling the amount of fuel to be injected from a fuel injection valve, by a fuel injection period during which the fuel injection valve is opened for fuel injection,the fuel injection control system comprising: operating condition-detecting means for detecting operating conditions of the engine; demanded fuel amount-determining means for determining an amount of fuel demanded by the engine, according to the detected operating conditions of the engine; deposited fuel amount-determining means for determining, out of an amount of fuel injected from the fuel injection valve, an amount of fuel deposited on walls downstream of the fuel injection valve, according to the detected operating conditions; net fuel amount-determining means for determining a net amount of fuel to be injected from the fuel injection valve, based on the determined demanded amount of fuel and the determined deposited amount of fuel; fuel pressure-determining means for determining pressure of fuel to be injected from the fuel injection valve; and fuel injection period-determining means for determining the fuel injection period by correcting the determined net amount of fuel according to the determined pressure of fuel.