Patent Document ID: 20110106399
Application ID: 12917659
Patent Flag: 0

Claim One:
1. An engine control apparatus comprising: a combustion target value calculator which uses a combustion parameter arithmetic expression defining a correlation between at least one engine output-related value indicating an output characteristic of an internal combustion engine and at least one combustion parameter associated with a combustion condition of the internal combustion engine to calculate a target value of the combustion parameter needed to meet a required value of the engine output-related value; a controlled variable command value calculator which uses a controlled variable arithmetic expression defining a correlation between the combustion parameter and at least one controlled variable of at least one actuator to calculate a command value representing a target value of the controlled variable to achieve the target value of the combustion parameter, the actuator being operable to control the combustion condition of the internal combustion engine based on the command value; a combustion condition determiner which determines an actual value of the combustion parameter; and a learning circuit which performs a learning operation to learn the correlation between the combustion parameter and controlled variable based on the actual value of the combustion parameter to update the controlled variable arithmetic expression.