The camshaft is installed in the central seat hole of the V type angle of the engine block. 24 cams are arranged in a certain direction, and the driving roller rocker swings up and down. The valve rocker and rocker arm transverse bridge on the tappet and the cylinder head are used to control the opening and closing of the two valves of the same name.
2, roller rocker assembly
The shaft is composed of three segments of the same structure of the roller rocker shaft gas generator set, each roller rocker shaft is provided with four roller rocker, two cylinders respectively control the symmetrical layout of the inlet and outlet valve open and close.
3. Working process of valve train
During the normal operation of the gas generator set, the crankshaft drives the camshaft through the transmission of gears. 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 cam is turned away from its corresponding roller rocker arm, the two valve with the same name will resume to the closed state under the action of the valve spring.
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