Connecting rod structure for piston

Abstract

The invention discloses a connecting rod structure for a piston. The connecting rod structure comprises a connecting rod, the piston, a connecting rod bearing pad and two piston bearing pads, and further comprises two piston pin covers, wherein a through hole is formed in each of the upper end and the lower end of the connecting rod; two connecting holes are formed in circumferential end surface of the piston in a penetrating manner, the upper end of the connecting rod is sleeved with the piston, the two connecting holes are communicated with the through holes formed in the upper end of the connecting rod; the connecting rod bearing pad is arranged inside the through holes formed in the upper end of the connecting rod and the connecting holes, a piston pin is arranged inside the connecting rod bearing pad, and the middle part of the piston pin is sleeved with the connecting rod bearing pad; the two piston bearing pads are arranged inside the two connecting holes respectively, and the two ends of the piston pin are sleeved with the two piston bearing pads; each of the two piston pin covers is sleeved with an O-shaped sealing ring. By adopting the connecting rod structure for the piston, the problem of exhaust gas backflow during the process of scavenging air by an engine can be solved through O-shaped sealing rings in the piston pin covers and two gas rings arranged at two ends of each piston pin hole.

Description

technical field [0001] The invention relates to the technical field of a two-stroke engine with opposed pistons and opposed cylinders, in particular to a piston connecting rod structure. Background technique [0002] In the connecting rod, piston and piston pin assembly of the opposed piston and opposed cylinder engine, when the piston and piston pin reciprocate in the cylinder, due to the structure of the opposed two-stroke engine and the particularity of the intake and exhaust, the traditional piston 1. The connecting rod structure makes the gas and exhaust gas continuously pump exhaust gas into the crankcase during the scavenging process, resulting in too high crankcase pressure. First: The exhaust gas entering the crankcase will dilute the oil in the oil pan, accelerating the deterioration and aging of the oil. After the acid gas enters the engine oil, it will corrode the parts and accelerate the wear along with the lubrication system to each moving pair. Second: The e...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a piston connecting rod structure to solve the problem that the traditional piston and connecting rod structure cause gas and exhaust gas to pump exhaust gas into the crankcase during the scavenging process, resulting in high crankcase pressure, oil dilution and friction The problem of vice being corroded

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