Its main function is to transmit the explosive force generated by the combustion of the mixture to the connecting rod through the piston pin, to push the crank of the crankshaft.
The basic structure of the piston can be divided into three parts: top, head, and skirt.
The top of the piston is divided into a flat top and a concave top. Piston head with several rectangular grooves used to house various piston rings, There are many small radial holes drilled at the bottom of the ring groove, oil scraped from the cylinder wall, through these holes to the oil pan.
The piston head withstands and transmits the explosive force of the mixture after combustion; Can conduct the heat generated after the mixture is burned; the Combustion chamber as part of the piston ring.
The skirt of the piston refers to the part from the piston ring groove to the cup mouth. Its main function is that the piston plays a guiding role in the reciprocating movement in the cylinder, and withstand the side pressure from the cylinder wall.
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