Patent ID: 7379810
Filing Date: 2008-05-27
Classification: F02D

Abstract:
1. An engine control system for controlling an engine having an intake air system through which air is drawn, a fuel injection valve for performing fuel injection to supply fuel into a combustion chamber, and a crankcase filled with engine oil, the engine control system comprising: detecting means for detecting at least one of an output of the engine and a status correlated to the output to provide a detected value; calculating means for calculating a combustible component quantity of intake air, resulting from combustible components prevailing in the crankcase, on the basis of the detected value and providing a commanded fuel injection quantity depending on the detected value; and controlling means for controlling the fuel injection valve depending on the commanded fuel injection quantity so as to perform the fuel inject to supply fuel into the combustion chamber to allow the engine to provide a demanded output; wherein the calculating means includes fuel injection affect eliminating means for eliminating an adverse affect on the calculation result of the combustible component quantity resulting from fuel injected to the combustion chamber by the fuel injection valve in response to the commanded fuel injection quantity.