Patent ID: 9303569
Filing Date: 2016-04-05
CPC Classification: F02D,Y02T

Claim Text:
1. A control device for an internal combustion engine, comprising: valve timing varying unit that is capable of changing a valve timing of an intake valve, and intake valve control unit for setting a target value of an air amount index in which an air amount in a cylinder is reflected, and also calculating a target valve timing that is a target value of the valve timing of the intake valve based on the target value of the air amount index, and controlling the valve timing of the intake valve so that the valve timing matches the target valve timing by driving the valve timing varying unit; wherein the intake valve control unit comprises: maximum air amount VT calculation unit for, in a case where a predetermined operation condition that a plurality of local maximum points exist on a characteristic line representing a relation between the valve timing of the intake valve and the air amount index is established, calculating a valve timing corresponding to a maximum value of the air amount index as a maximum air amount VT, and air amount maximizing unit for, in a case where the operation condition is established and the maximum value of the air amount index is less than the target value, changing the valve timing of the intake valve towards the maximum air amount VT.