EXHAUST CONTROL DEVICE FOR VEHICLE ENGINE

摘要

In an exhaust control device for a vehicle engine in which an exhaust pipe forming an exhaust passage along with an exhaust port is connected to a cylinder head via the exhaust port and a rotary valve capable of changing th e opening area of the exhaust passage is disposed in the middle of the exhaust passage, the opening area of the exhaust passage is made controllable by the rotary valve while avoiding the increase in the number of component parts. A rotary valve having a turning axis CR located at a position offset from the center CL of the exhaust port is housed in a valve housing provided integral ly with a cylinder head.