The camshaft is installed in the V - type angle central seat hole of the body. A series of 24 cams are arranged in a certain direction, and the driving roller rocker arms are swung up and down, and two valves of the same name are regularly controlled by the tappet and the valve rocker and the rocker cross bridge on the cylinder head.
2, wheel rocker arm component
The roller rocker shaft of the gas generating set is made up of three parts with the same shaft. Each roller roller arm shaft is equipped with four roller rocker arms to control the opening and closing of the intake and exhaust valves of the two cylinders with symmetrical layout respectively.
3. The working process of the gas distribution mechanism
During the normal operation of a gas generating set, the crankshaft drives the camshaft through the transmission of the gear. Due to the cam curve, when the corresponding pick shaped roller rocker contact a cam, the roller rocker on the roller rocker shaft axis to rotate, push upward movement, the intake from the top of one end of the rocker arm, the other end is under middle pressure cross bridge, cross bridge and two contact two of the same name at the top of the valve rod at the same time, to overcome the resistance of the valve spring, valve opening pressure will be two of the same name. When the pick of the cam turns away from its corresponding roller rocker arm, the two homonym valve is restored to the closed state under the action of the valve spring.