| 摘要 |
In an exhaust gas recirculation device for an engine with a mechanism for recirculating a portion of exhaust gas to the suction side of a cylinder head, a communication hole is opened in a wall between an exhaust port and suction port of the cylinder head. The communication hole is provided obliquely from the upper side to lower side of the wall, and the communication hole at the suction side is opened in a direction along the direction of swirls of sucked air. Further, a choke is provided in at least either a suction flow passage communicated with the suction port or an exhaust flow passage communicated with the exhaust port, and the opening area of the suction flow passage or the exhaust flow passage is variable by the throttle. |
