| 摘要 |
PURPOSE: An exhaust gas recirculation(EGR) valve is provided to prevent the leakage of the exhaust gas to allow the smooth operation of the valve. CONSTITUTION: An exhaust gas recirculation(EGR) valve is composed of a housing formed to communicate an inlet, an outlet, and return passages(59) of the exhaust gas with each other, a valve being detachable at a valve seat of the housing to open/close the inlet and outlet passages, an actuator(69) for controlling the opening/closing of the valve(52), an elastic member(61) for elastically biasing the passages closed by the valve in an initial state, a bush(58) for supporting a valve shaft, and a spacing portion(58a) for discharging the exhaust gas leaked through a gap between the valve shaft and bush to a suction system side.
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