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About The Introduction Of Automobile Engine Cylinder Head

2021-12-03

1. Installation position of cylinder head:

Installed under the valve cover above the cylinder block.

2. The role of the cylinder head:
The sealed cylinder forms a combustion chamber together with the top of the piston and the cylinder wall. It also carries the parts of the valve mechanism, and the cylinder head has intake and exhaust passages for intake and exhaust.

3. Classification of cylinder heads:

①Integral cylinder head:

A complete cylinder head can cover all cylinders.

② Split cylinder head:
It can be subdivided into two types: monomer type and block type.

Monolithic: only covers one cylinder, mostly used for high-power diesel engines.

Block type: can cover two or more 7-, a few are used in gasoline engines, and some are used in diesel engines.

4. Materials used in the cylinder head:

Cylinder heads are generally made of two materials: aluminum alloy and cast iron.

The cylinder heads of light-duty car engines are mostly made of aluminum alloy materials.

For heavy-duty diesel engines, the cylinder heads are mostly made of cast iron.

5. Removal and installation of cylinder head:

①Installation: Pay attention to the order of the middle and then the two sides, and tighten it in two to three diagonal steps. In order to ensure that the cylinder head gasket is evenly and smoothly clamped between the cylinder head and the cylinder block to ensure the sealing performance.
②Disassembly: Pay attention to the order of the two sides first and then the middle, and loosen the bolts in two or three diagonal steps.

Note: When installing the cylinder head, you must ensure that the cylinder head is installed and tightened in a cold state, otherwise the installation parts will expand when the car is hot, which will cause poor sealing.