Device for testing oil gathering capacity of oil inlet of connecting rod

Abstract

The invention relates to the technical field of connecting rod oil gathering capacity testing and particularly discloses a device for testing oil gathering capacity of an oil inlet of a connecting rod. The device comprises a piston, a piston pin, a connecting rod bushing, a simulation connecting rod and a driving device. The piston pin is fixedly mounted on the piston; the connecting rod bushing rotationally sleeves the piston pin; the simulation connecting rod fixedly sleeves the connecting rod bushing; the driving device drives the simulation connecting rod to rotate. The piston is internally provided with an inner cooling oil cavity, the simulation connecting rod is provided with the oil inlet, the connecting rod bushing is provided with a lubricating oil port, the piston pin is provided with an oil storage cavity, an oil gathering hole and an oil discharging hole, the oil gathering hole and the oil discharging hole are communicated with the oil storage cavity, the oil inlet is communicated with the inner cooling oil cavity and the lubricating oil port, and the lubricating oil port is constantly communicated with the oil gathering hole, so that lubricating oil flowing out of anoil outlet hole of the inner cooling oil cavity is capable of flowing into the oil storage cavity through the oil inlet, the lubricating oil port and the oil gathering hole sequentially; by statisticsof quantity of lubricating oil in the oil storage cavity, quantity of lubricating oil entering the connecting rod bushing can be obtained, and accurate calculation input can be provided for connecting rod small end EHD (elastohydrodynamic) calculation.

Description

technical field [0001] The invention relates to the technical field of testing the oil collecting capacity of a connecting rod, in particular to a testing device for the oil collecting capacity of an oil inlet port of a connecting rod. Background technique [0002] At present, diesel engines are developing toward high explosion pressure and high power, so the limitations of the existing lubrication methods for connecting rod bushes and piston pins are becoming more and more obvious. There is an increasing risk of the piston pin seizing into the connecting rod bushing. Therefore, it is necessary to make an accurate assessment of the risk of seizure between the piston pin and the connecting rod bushing during the engine development stage. [0003] In the prior art, the calculation method of EHD (Elasto Hydro Dynamic elastohydrodynamic lubrication) of the connecting rod small end can be used to evaluate the bite risk of the piston pin and the connecting rod bushing, but the ac...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a test device for the oil collection capacity of the connecting rod oil inlet to solve the problem that there is no technical means in the prior art that can be used to accurately measure the amount of lubricating oil entering the connecting rod bushing

Images