| 摘要 |
An exhaust gas recirculation valve device for an exhaust gas cleaning apparatus of an internal combustion engine for an automobile, which device comprises a diaphragm mechanism mounted on a body for operating the valve device. The diaphragm mechanism has a diaphragm and has, on both sides of the diaphragm, chambers which should be connected to the respective engine ports. One of the chambers, on the side of the diaphragm facing the surface of the body, is formed by a bellows member, made of rubber material, which is held apart from the surface of the body so that the bellows is effectively insulated from the high temperature of the body caused by the high temperature exhaust gas passing through the body. |
