Many engines have two camshafts. One camshaft controls the intake valve and the other camshaft controls the exhaust valve.
The engine valve mechanism designed with double overhead camshafts is located in the cylinder head.
The valve train of the engine is one of the two major mechanisms, which is very important for the engine.
If there is no valve train, the engine will not work normally.
It is very important that the valve mechanism has timing. If the timing is not accurate, the engine power will decrease, the fuel consumption will increase, and even the engine will not start.
Many engine valve trains have variable valve timing technology, and many engines are also equipped with variable valve lift technology, both of which can improve the efficiency and power of the engine.
The valve mechanism is under the valve cover, and the valve mechanism of the engine can be seen after the valve cover is removed.
The valve train also needs lubrication. When the engine is running normally, the oil pump delivers oil to the cylinder head, and then the oil will lubricate the camshaft and valves.
If you are interested in the valve train, you can search some pictures.
The valve cover of the engine cannot be removed at will. Don't take it off just to have a look.
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