What are the five major components of an engine?

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Engine five major components refer to: cylinder block, crankshaft, connecting rod, camshaft, and cylinder head. The relevant introduction of the engine is as follows: Engine composition: The engine consists of two major mechanisms: the crank connecting rod mechanism and the valve train mechanism, as well as five major systems including cooling, lubrication, ignition, fuel supply, and starting systems. The main components include the cylinder block, cylinder head, piston, piston pin, connecting rod, crankshaft, flywheel, etc. Engine working principle: The working chamber of a reciprocating piston internal combustion engine is called the cylinder, and the inner surface of the cylinder is cylindrical. The piston that reciprocates in the cylinder is hinged to one end of the connecting rod through the piston pin, while the other end of the connecting rod is connected to the crankshaft. The crankshaft is supported by bearings on the cylinder block and can rotate within the bearings, forming the crank connecting rod mechanism. When the piston reciprocates in the cylinder, the connecting rod drives the crankshaft to rotate.