Patent ID: 6708678
Filing Date: 2004-03-23
Classification: F02D,F02P,Y02T

Abstract:
An electronic control device for an internal combustion engine comprising:atmospheric pressure detector means for detecting an atmospheric pressure; operating condition detector means for detecting an operating condition of said internal combustion engine from engine speed and intake pressure of the internal combustion engine; exhaust gas recirculation amount control means for controlling a recirculation amount of exhaust gas on the basis of a result detected by said operating condition detector means; first fundamental control value calculating means for calculating a fundamental control value of said internal combustion engine on the basis of the result detected by said operating condition detector means in the suspended state of exhaust gas recirculation; second fundamental control value calculating means for calculating a fundamental control value of said internal combustion engine on the basis of the result detected by said operating condition detector means in the operated state of exhaust gas recirculation; control value calculating means for correcting a result calculated by said first fundamental control value calculating means or a result calculated by said second fundamental control value calculating means on the basis of a physical value representing a state of said internal combustion engine; exhaust gas recirculation change calculating means for calculating a change in recirculation amount of exhaust gas at the time of change in atmospheric pressure in the form of a rate of change to the recirculation amount of exhaust gas under the standard atmospheric pressure on the basis of the result detected by said operating condition detector means and the result detected by said atmospheric pressure detector means in the operated state of exhaust gas recirculation; and correction means for correcting the fundamental control value calculated by said second fundamental control value calculating means on the basis of the rate of change to the recirculation amount of exhaust gas calculated by said exhaust gas recirculation change value calculating means.