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Method and device for correcting wear profile of engine main bearing

A main bearing and engine technology, applied in the direction of instruments, geometric CAD, design optimization/simulation, etc., can solve the problems of prolonging the cycle of main bearing design and verification, increasing the cost of parts, and waste of development resources

Active Publication Date: 2021-03-30
DONGFENG MOTOR CORP HUBEI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Upgrading or thickening the material of the main bearing will increase the cost of the parts and lead to problems such as difficulty in the layout of the main bearing; optimizing the structural parameters of the main bearing will prolong the cycle of main bearing design and verification, resulting in waste of development resources

Method used

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  • Method and device for correcting wear profile of engine main bearing
  • Method and device for correcting wear profile of engine main bearing
  • Method and device for correcting wear profile of engine main bearing

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Embodiment Construction

[0048] In order to make the objectives, technical solutions and advantages of the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely intended to illustrate the invention and are not intended to limit the invention. Further, the technical features according to each of the various embodiments described below can be combined with each other as long as they do not constitute a collision between each other.

[0049] Such as figure 1 The schematic flow diagram of the wear line correction method of the engine main bearing provided by the embodiment of the present invention, including the following steps:

[0050] S1: Establish the elastic liquid power lubrication analysis model of the main bearing, simulation analysis of the elastic liquid power lubrication of the main bearing;

[0051] S2: Based on the elastic liquid...

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Abstract

The invention discloses a method and a device for correcting a wear profile of a main bearing of an engine, which belong to the technical field of engine bearing power, and are implemented by the following steps of: establishing an elastic hydrodynamic lubrication analysis model of the main bearing, and carrying out simulation analysis on the elastic hydrodynamic lubrication condition of the mainbearing; on the basis of an elastic hydrodynamic lubrication simulation analysis result of the main bearing, correcting a design molded line of the main bearing by utilizing a finite difference grid,and establishing a wear molded line of the main bearing so as to simulate a steady state achieved after the main bearing is in running-in; and carrying out optimization analysis on the elastic hydrodynamic lubrication analysis model of the main bearing by utilizing the wear profile of the main bearing. According to the method, a steady state achieved after running-in of the main bearing is simulated through the wear molded line of the main bearing, and the actual working state of the main bearing is better met, so that the simulation precision of elastic dynamic lubrication analysis of the main bearing is improved, and the misjudgment rate of the reliable durability of the main bearing is reduced.

Description

Technical field [0001] The present invention belongs to the field of engine axle power technology, and more particularly to a wear line correction method and apparatus for engine main bearing. Background technique [0002] The main bearing is a main carrier component that converts the linear motion of the internal combustion engine piston into a rotational movement of the crankshaft, and is also an important friction pair in the operation of the internal combustion engine. In actual work, due to the effect of the journal tilt, deformed and bearing surface morphology, bearing edge wear, which seriously degrade the lubrication of the main bearing, shorten the service life of the main bearing, directly affecting the reliability and durability of internal combustion engine Sex. [0003] The main bearing structure is special, and the working conditions of the cyclical changes in gas explosion pressure and piston linkage in the work, and withstand high speed, high pressure, high temper...

Claims

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Application Information

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IPC IPC(8): G06F30/23G06F30/17G06F119/14
CPCG06F30/23G06F30/17G06F2119/14
Inventor 吴田田王江涛张文龙张继明张雷
Owner DONGFENG MOTOR CORP HUBEI
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