Patent ID: 6564778
Filing Date: 2003-05-20
Classification: F02D,F02M,Y02T

Abstract:
A fuel supply control system for controlling a fuel amount to be supplied to an internal combustion engine having an exhaust gas recirculation mechanism comprising an exhaust gas recirculation passage connected between an intake pipe and an exhaust pipe, and an exhaust gas recirculation valve provided in said exhaust gas recirculation passage, said fuel supply control system including,an intake pressure sensor for detecting an intake pressure of said engine; deterioration detecting means for determining a degree of deterioration of said exhaust gas recirculation mechanism according to a pressure difference between an intake pressure detected when opening said exhaust gar recirculation valve and an intake pressure detected when closing said exhaust gas recirculation valve; and correcting means for correcting the fuel amount to be supplied to said engine according to the degree of deterioration of said exhaust gas recirculation mechanism as determined by said deterioration detecting.