Patent ID: 7438048
Filing Date: 2008-10-21
Classification: F02D

Abstract:
1. A fuel injection amount control apparatus for internal combustion engine, including fuel injection amount control means arranged to control a fuel injection amount of fuel injection means to the internal combustion engine according to an operating condition of the internal combustion engine, perform OTP boosting that increases the fuel injection amount in order to prevent overheating of an exhaust system when the internal combustion engine comes into a first given operating condition, and execute power boosting that increases the fuel injection amount in order to enrich an air-fuel ratio to an output air-fuel ratio when the internal combustion engine comes into a second given operating condition, and wherein the apparatus includes boost timing adjustment means arranged to cause the injection amount control means to perform the power boosting and arranged to execute the OTP boosting later from start of the power boosting, delayed by a period attributable to at least an increased amount of fuel by the power boosting, when the internal combustion engine comes into the first given operating condition and the second given operating condition.