A cylinder is a component that forms a combustion chamber together with a cylinder head and a piston. The main component for generating power, in which pistons perform reciprocating motion while maintaining airtightness and the thermal energy generated by fuel combustion is turned into mechanical energy.
To convert applied thermal energy into mechanical energy as efficiently as possible, the compressed air-fuel mixture and combustion gas must be prevented from leaking out between the cylinder and the piston, and, at the same time, friction and wear caused by reciprocating motion must be reduced as much as possible.

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