Patent ID: 6637414
Filing Date: 2003-10-28
Classification: F02D,Y02T

Abstract:
A control system for an internal combustion engine having a fuel tank and a fuel intake line coupled thereto, said control system comprising:at least one fuel injection valve for injecting fuel supplied from the fuel tank into the intake pipe of the engine; fuel injection amount control means for controlling the fuel injection amount by controlling the valve opening period of the at least one fuel injection valve; fuel pressure control means provided in the fuel tank for controlling the pressure difference between the pressure of fuel supplied to the at least one fuel injection valve and the pressure in the fuel tank such that the pressure difference is at a constant value; fuel tank pressure detecting means for detecting the pressure in the fuel tank; intake pipe pressure detecting means for detecting the pressure in the intake pipe; first correcting means for calculating a correction amount according to the pressure in the fuel tank and the pressure in the intake pipe, and correcting the valve opening period of the at least one fuel injection valve as a function of the calculated correction amount; required fuel amount calculating means for calculating a required amount of fuel to be supplied to the engine as a function of an operating condition of the engine; and second correcting means for correcting the change rate of the correction amount calculated by the first correcting means, according to the required fuel amount.