▎ 摘　　要

NOVELTY - The utility model claims a graphene seepage layer piston, comprising a piston and a cylinder sleeve, the piston comprises a piston top connected in turn, the piston ring and the piston skirt piston skirt are made of steel material, the piston skirt and the piston top are connected by friction welding; the inner wall of the cylinder sleeve and the outer wall of the piston ring are penetrated with a graphene layer, the thickness of the graphene layer is 0.07 to 0.12mm, the piston is connected with the upper end rod by a piston pin, the upper surface of the piston pin is provided with 2 upward oil injection holes; the piston pin is a hollow cylinder, the lower part of the connecting rod is connected with the connecting rod cover by a connecting rod bolt, the inner layer of the connecting rod cover is provided with a connecting rod tile. The piston top of the utility model is connected with the piston skirt by means of friction welding, so as to overcome the disadvantages of the traditional bolt connection strength is not high, reinforcing connection strength, the outer wall of the piston ring and the inner wall of the cylinder sleeve are penetrated into the graphene layer, so as to reduce the friction force between the piston and the wall, reduce the oil consumption, so as to improve the service life of the whole moving pair so as to achieve the effect of self-lubricating.