Patent ID: 6513510
Filing Date: 2003-02-04
Classification: F02D

Abstract:
A method for controlling fuel supply of a vehicle on acceleration, wherein a control unit, calculating a base amount of fuel, receives an output voltage of an O2 sensor and then calculates a P-gain on the basis of a voltage difference between the output voltage and a predetermined reference voltage, an I-gain on the basis of an integrated value of the voltage difference, and short-term and long-term correction values on the basis of the I-gain and the P-gain, comprising:determining whether the vehicle is being accelerated; determining whether the I-gain is in a predetermined range if it is determined that the vehicle is being accelerated; modifying the I-gain and the P-gain if the I-gain is determined to be out of the predetermined range; calculating the long-term correction value on the basis of the modified I-gain and P-gain; calculating a total amount of fuel supplied on the basis of the long-term correction value; and driving an injector on the basis of the calculated total amount of fuel supplied.