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Friction wearing part test apparatus for connecting rod small end bushing of engine

An engine connecting rod, friction and wear technology, applied in the field of engine connecting rod small end bushing testing, can solve the problems of connecting rod small end bushing wear, frequent engine accidents, etc., to reduce the test cost, easy to implement, and simple in structure Effect

Active Publication Date: 2014-08-20
CHINA NORTH ENGINE INST TIANJIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of frequent engine accidents caused by the serious wear of the connecting rod small end bush in the prior art, the present invention provides a test device for the friction and wear parts of the small end bush of the engine connecting rod.

Method used

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  • Friction wearing part test apparatus for connecting rod small end bushing of engine
  • Friction wearing part test apparatus for connecting rod small end bushing of engine
  • Friction wearing part test apparatus for connecting rod small end bushing of engine

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Embodiment Construction

[0015] Such as figure 1 As shown, a test device for friction and wear parts of engine connecting rod small end bushing, including body 1, bearing cap 2, crankshaft 3, connecting rod 4, cylinder liner 5, test piston 6, piston pin 7, small end bushing 8 , Support rod 9, spring limit plate 10, moving plate 11 and spring group 12. Among them, the engine body 1, bearing cap 2, crankshaft 3, connecting rod 4, cylinder liner 5, test piston 6, piston pin 7, and small head bushing 8 are the common basic structures of the engine, and the crankshaft 3 is made in the supporting structure composed of the engine body, etc. The rotating motion drives the piston 6 to reciprocate up and down. Among them, the test piston needs to be improved on the basis of the commonly used piston of the engine, and the combustion chamber at the top is removed, so that the top of the piston can be evenly stressed, and it is closer to the state of the whole machine.

[0016] The present invention is improved ...

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Abstract

The invention relates to a friction wearing part test apparatus for a connecting rod small end bushing of an engine. The apparatus comprises a body (1), a bearing cover (2), a crankshaft (3), a connecting rod (4), a cylinder sleeve (5), a test piston (6), a piston pin (7) and a small end bushing (8). The crankshaft (3) performs rotary motion in a bearing structure composed of the body (1) and the bearing cover (2). The crankshaft (3) and the connecting rod (4) are connected, the connecting rod (4) is connected with the test piston (6) through the piston pin (7), the contact portion of the connecting rod (4) and the piston pin (7) is provided with the small end bushing (8), and the rotary motion of the crankshaft (3) drives the test piston (8) to perform up-and-down motion in the cylinder sleeve (5). The apparatus further comprises a support rod (9), a spring limiting disc (10), a motion disc (11) and a spring set (12). Compared to a whole machine test, the apparatus can reduce the cost for endurance testing of a connecting rod small end bushing.

Description

technical field [0001] The invention belongs to the technical field of testing engine connecting rod small end bushings, and in particular relates to a test device for friction and wear parts of engine connecting rod small end bushings. Background technique [0002] As the engine power continues to increase, the maximum combustion pressure continues to increase, and the bearing load on the small end bush of the connecting rod continues to increase. The small end bush is more prone to wear and locks with the piston pin, resulting in engine cylinder failure. Increased incidence. Due to the lack of component verification means, the designer can only use the whole engine test to compare different schemes of the connecting rod small end bushing structure, the test cost is high, and it is not easy to obtain the early failure mode of the connecting rod small end. In order to quickly compare the wear state of the connecting rod small end bushing of different schemes under the condi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
Inventor 姚亮宇王延荣张小良熊毕伟卫军朝杨震寰郭昌明廖日东刘江伟
Owner CHINA NORTH ENGINE INST TIANJIN
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