C15 and C18 – Valve System Components

Valve system components

(41) Rocker arm

(42) Valve adjustment screw

(43) Rocker arm shaft

(44) Camshaft follower

(45) Camshaft

(46) Valve bridge

(47) Valve rotator

(48) Valve spring

(49) Valve

(50) Valve seat

The valve train controls the flow of inlet air into the cylinders and the flow of exhaust gases out of the cylinders during engine operation. Specifically machined lobes on camshaft (45) are used in order to control the following aspects of valve function:

Height of valve lift
Timing of valve lift
Duration of valve lift
The crankshaft gear drives the camshaft gear through the front.

Posted in C18

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