| 摘要 |
PROBLEM TO BE SOLVED: To provide a control device of an internal combustion engine which is suppressed in the lowering of purification efficiency of exhaustion irrespective of an exhaust flow rate.SOLUTION: An opening part 32c defines a circulation route in which exhaustion which has passed a turbine of a supercharger at an upstream side (lower part on a page space) circulates to a downstream side. A swirl flow fr is imparted to the exhaustion which has passed the turbine. A waste gate valve (WGV34) is selectively openable in an upper half and a lower half in a figure. In a mode a at which the lower half is valve-opened, a swirl flow in the same direction as that of the swirl flow fr is generated, and in a mode b at which the upper half is valve-opened, a swirl flow in a direction reverse to the swirl flow fr is generated. When an exhaustion flow rate is small, the mode b is employed, and when the exhaustion flow rate is large, the mode a is employed.SELECTED DRAWING: Figure 3 |
