Engine connecting rod bearing bush

Abstract

The invention belongs to the technical field of bearing bush manufacturing, and particularly relates to an engine connecting rod bearing bush comprising an upper bearing bush. The inner side of the upper bearing bush is provided with an oil tank in the peripheral direction of the upper bearing bush, and a foreign matter removal oil tank penetrating the oil tank in the axial direction of the oil tank; one side of the foreign matter removal oil tank is provided with auxiliary oil tanks in the peripheral direction of the upper bearing bush, and the auxiliary oil tanks are located on the both sides of the oil tank and communicate with the oil tank. According to the engine connecting rod bearing bush, the problems that the surface is scratched during relative movement of a journal and the bearing bush since various metallic or non-metallic impurities exist in engine cooling oil, and consequently the bearing bush is damaged mechanically, and the engine maintenance period is shortened are solved.

Description

technical field [0001] The invention belongs to the technical field of bearing bush manufacture, in particular to an engine connecting rod bearing bush. Background technique [0002] The main bearing bush and connecting rod bearing bush on the engine are one of the precision parts on the engine. In order to reduce the frictional resistance and the wear of the crankshaft connecting rod journal, a tile-type sliding bearing is installed in the big end hole of the connecting rod, referred to as the connecting rod bearing bush. The bearing pad is divided into upper and lower halves. At present, thin-walled steel-backed bearing pads are mostly used. The inner surface of the bearing pad is cast with a wear-resistant alloy layer. The wear-resistant alloy layer has the characteristics of soft quality, easy to maintain oil film, good running-in performance, small frictional resistance, and not easy to wear. [0003] During the processing of the engine cylinder block, crankshaft and ot...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, the object of the present invention is to provide an engine connecting rod bearing bush, which solves the problem that the surface of the journal and the bearing bush are scratched when the journal and the bearing bush move relative to each other due to the existence of various metal or non-metallic impurities in the engine cooling oil, which in turn causes the bearing bush to be damaged. Failure due to mechanical damage, shortening the maintenance cycle of the engine

Images