Cummins Engine part Push Rod 3046430/3032681/3027214/3008885 for Cummins NT855 Engine

The role of the engine valve push rod

The valve push rod is all the parts from the timing gear to the push valve action. Its composition varies depending on the form of the valve train. Its function is to drive the valve to open and close at regular intervals.

The valve push rod mainly includes camshaft, timing gear, tappet and its guide rod, push rod, rocker arm and rocker arm shaft, etc. Its function is to make the intake and exhaust valves open and close according to the timing specified by the valve phase, and Make sure there is enough opening.

The main function of the valve push rod is to transmit the thrust of the tappet to the rocker arm to drive the valve to open. The upper and lower ends of the push rod are heat-treated and polished to improve wear resistance; the rod body has two types: solid and hollow. [Engine valve mechanism] The function of the valve mechanism is to open and close the intake and exhaust valves in time according to the working sequence of the engine and the requirements of the working cycle of each cylinder, so that the combustible mixture (gasoline engine) or fresh air (diesel engine) engine) into the cylinders and expel the exhaust gases into the atmosphere. Four-stroke engines widely use valve cam valve train, which consists of two parts: valve group and valve transmission group. The valve transmission group includes: camshaft, timing gear and timing chain or timing belt (to realize the transmission between crankshaft and camshaft), valve lifter, valve push rod, rocker arm and rocker arm shaft assembly, etc.