Patent ID: 8316831
Filing Date: 2012-11-27
Classification: F01L,F02D,F02M,Y02T

Abstract:
1. A control device for an internal combustion engine that includes: a blow-by gas recirculation system that has a blow-by gas passage that returns blow-by gas, flowing from a combustion chamber to a crank chamber, to an intake passage, a flow rate control valve that adjusts a flow rate of gas returned to the blow-by gas passage, and an actuator that adjusts an opening degree of the flow rate control valve so that the flow rate of gas becomes a target value, the target value of the flow rate of gas is calculated on the basis of an engine rotational speed of the engine and an engine load of the engine; and at least one of a cylinder cut-off mechanism that reduces the number of operating cylinders and a variable valve mechanism that varies a valve characteristic of an intake valve, the control device comprising: a variable flow rate control valve opening degree setting unit that variably sets an opening degree of the flow rate control valve by correcting a reference opening degree of the flow rate control valve by an opening degree correction value, the variable flow rate control valve opening degree setting unit calculates the reference opening degree on the basis of the target value and the variable flow rate control valve opening degree setting unit calculates the opening degree correction value on the basis of an intake pressure in the intake passage.