AIR VOLUME CONTROL DEVICE FOR CNG ENGINE

摘要

PURPOSE: An air volume control device of a CNG(Compressed Natural Gas) engine is provided to reduce the resistance against exhaust gas because a valve plate is arranged not to obstruct the flow of the exhaust gas. CONSTITUTION: An air volume control device of a CNG engine comprises an actuator. The actuator includes an actuator valve(100), a valve housing(170) in which a valve rod(130) is inserted so that a valve plate(140) reciprocates to an exhaust line(200) to bypass the exhaust gas passing through the exhaust line to outside, an actuator housing(110) which forces the valve rod to move from side to side and is embedded with an elastic member(111) and a diaphragm(112), and a fixing bracket(121) which connects the valve housing and the actuator housing.