Patent ID: 6701891
Filing Date: 2004-03-09
Classification: F02D

Abstract:
A throttle control system for an internal combustion engine, for controlling a degree of opening of a throttle valve arranged in an intake system of the engine,the throttle control system comprising: throttle valve opening-detecting means for detecting the degree of opening of the throttle valve; target opening-setting means for setting a target degree of opening for control of the degree of opening of the throttle valve; smallest opening-detecting means for detecting a smallest degree of opening of the throttle valve after a start of the engine; throttle valve temperature-detecting means for detecting a temperature of the throttle valve; and target opening lower limit value-setting means for setting a lower limit value of the target degree of opening to a degree of opening larger than the smallest degree of opening of the throttle valve when the detected smallest degree of opening is larger than a predetermined degree of opening and at the same time the detected temperature of the throttle valve is lower than a predetermined temperature.