Piston and connecting rod assembly

Abstract

The invention discloses a piston and connecting rod assembly. The piston and connecting rod assembly comprises a piston, a ball socket lining and a connecting rod, wherein a ball socket concave towards a combustor of the piston is arranged at the upper end of the skirt section of the piston, two piston pin holes are symmetrically formed in the skirt section, and the ball socket lining is detachably installed in the ball socket of the piston; the small end of the connecting end is a ball head which is matched with the ball socket lining to form a ball socket matching pair, a connecting rod pin hole is formed in the small end of the connecting rod, and the connecting rod is connected to the piston through a piston pin penetrating through the piston pin holes and the connecting pin hole. According to the piston and connecting rod assembly, the function of the piston pin is weakened, and gas pressure is transmitted through ball socket hinging; through the arrangement of the ball socket matching pair, the height of the piston is reduced, the overall height is reduced, the weight of the piston is reduced, reciprocating inertial force is reduced, and the vibration damping purpose and the light-weight purpose are realized; besides, due to the fact that the piston pin does not need to bear transmission pressure, ablation of a lining of the small end of the connecting rod can be avoided, and the reliability of an engine can be improved.

Description

technical field [0001] The invention relates to the field of engines, in particular to a piston connecting rod assembly. Background technique [0002] As a key component of a traditional internal combustion engine, the piston forms the combustion chamber of the engine together with the cylinder head and cylinder liner. The traditional piston is composed of a combustion chamber at the top, a ring groove at the head, a piston pin seat and a piston pin hole at the middle, and a piston skirt at the bottom. Cooling oil passages are provided under the combustion chamber and inside the piston ring groove. The small end of the connecting rod is hinged with the piston through the piston pin. A wear-resistant connecting rod small end bushing is set between the piston pin and the pin hole of the small end of the connecting rod. The top of the small end does not contact the piston. connect. [0003] The piston reciprocates in the cylinder liner under the pressure of the combustion gas...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a piston connecting rod assembly, so as to overcome the existing defects of high piston height, heavy piston and piston pin, adverse effects on the height and vibration of the whole machine, and easy ablation of the connecting rod bushing

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