| 摘要 |
PROBLEM TO BE SOLVED: To improve a detecting accuracy of heat generation quantity during combustion based on an output of a CPS.SOLUTION: An intracylinder detecting value is detected according to the output of an intracylinder pressure sensor arranged in a predetermined cylinder of an internal combustion engine in an internal combustion engine control device. Further, the total heat generation quantity in the predetermined cylinder, and the maximum intracylinder pressure angle being a crank angle when an intracylinder pressure of the predetermined cylinder becomes the maximum are detected according to the intracylinder pressure detecting value. Further, a crank angle in which a combustion ratio according to the maximum intracylinder pressure angle becomes a predetermined combustion ratio is calculated based on a relationship between a crank angle when the combustion ratio becomes the predetermined combustion ratio and the maximum intracylinder pressure angle. A heat generation ratio in a compression upper dead center is calculated according to the intracylinder pressure detecting value. Further, heat generation quantity in the predetermined cylinder during combustion is calculated according to the value of the predetermined combustion rate to the total heat generation quantity, a crank angle becoming the predetermined combustion rate, and heat generation ratio. |
