| 摘要 |
PROBLEM TO BE SOLVED: To suppress LOC (oil consumption amount) when an internal combustion engine is brought into a deceleration operation state from a high-rotation speed operation state or a high-torque operation state.SOLUTION: A control device which is applied to an internal combustion engine has: a supercharger 2 having a compressor 2a arranged in an intake passage 4; a PCV route 12 which is connected to the intake passage 4 at a position at an upstream side rather than the compressor 2a out of the intake passage 4, and makes the intake passage 4 and a crank case communicate with each other; and a negative pressure generation part which sets pressure in the PCV route 12 communicating with the crank case at negative pressure lower than pressure in a cylinder. When the internal combustion engine is brought into a reduction operation state from a high operation state that a rotational speed of the internal combustion engine is higher than a prescribed rotational speed, or when the internal combustion engine is brought into the reduction operation state from an operation state that torque is higher than prescribed torque, the negative pressure generation part is operated.SELECTED DRAWING: Figure 6 |
