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Weichai engine cylinder head

 
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The engine cylinder head is used to enclose the cylinder and form the combustion chamber. Side-valve engine cylinder head, cast with water jacket, water inlet hole, water outlet hole, spark plug hole, bolt hole, combustion chamber, etc. The overhead valve engine cylinder head, in addition to the cooling water jacket, also has valve gear, intake and exhaust passages, etc.


Cylinder head function:

The cylinder head is a valve mechanism in an internal combustion engine. It is mainly used to close the upper part of the cylinder to form the combustion chamber. It also serves as a support for the camshaft, rocker arm shaft and intake and exhaust pipes. It is mainly used to suck air into the inside of the cylinder, and the spark plug The combustible mixed gas is ignited, driving the piston to do work, and the exhaust gas is discharged from the exhaust pipe.


Common malfunctions:

Generally, the valve clearance is too large or too small, causing abnormal valve noise; there is also a failure of the camshaft position sensor on the cylinder head, but this is rare, and it is usually a valve failure. There is also a larger fault that is the mixing of oil and water. , this situation usually occurs because the joint surface of the cylinder head and the cylinder has a penetrating scratch, or the cylinder gasket is not tightly sealed. In this case, the engine needs to be completely disassembled.


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