Function and composition of engine block

body group function
The body group is the support of the engine and the assembly basis for the crank connecting rod mechanism, valve mechanism and main components of the engine system.
The cylinder head is used to close the top of the cylinder and form the combustion chamber together with the top of the piston and the cylinder wall. In addition, the water jacket, oil passage and oil pan in the cylinder head and cylinder block are part of the cooling system and lubrication system respectively.
Body group into structure
Modern automobile engine block assembly is mainly composed of cylinder block, cylinder head, cylinder head cover, cylinder liner, main bearing cap and oil pan. For engines with cylinder liners, the body assembly also includes dry or wet cylinder liners.