To ensure good sealing of the cylinder, the cylinder head must not be damaged or deformed. For this purpose, the cylinder head should have sufficient strength and rigidity.

The main function of the Cylinder Head is to seal the cylinder, which forms a common combustion space with the piston and withstands the action of high temperature and high pressure gas.

The cylinder head is used to close the cylinder and form the combustion chamber. Engine cylinder head with a side valve, cast with a water jacket, water inlet hole, water outlet hole, spark plug hole, screw hole, combustion chamber, and so on.

The function of the cylinder head of a car engine is to close the upper part of the cylinder, and together with the upper part of the piston to form the combustion chamber. cylinder head structure is complex, usually using foot iron or aluminum alloy material manufacturing, for certain engines, cylinder head structure varies, but there are many common points. cylinder head and the cylinder body combined, the level of the pit is part of the combustion chamber, in the cylinder head to the processing of valve seat.

The function of the cylinder head is to seal the cylinder, form a combustion chamber with the piston, and resist the action of high-temperature and high-pressure gas. The cylinder head is subjected to mechanical stresses caused by gas forces and cylinder bolt tightening, as well as high thermal stresses due to contact with high-temperature gas.

The cylinder head is equipped with intake and exhaust ports, valve seats, valve guides into the hole, also with cooling water channels and lubricating oil channels on the cylinder head of gasoline engines with spark plug holes, diesel engine cylinder head with injection holes.