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

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 main bearing design and verification cycle, difficult main bearing arrangement, and increasing parts cost, and achieves the optimal arrangement boundary, The effect of improving development efficiency and reducing misjudgment rate

Active Publication Date: 2022-05-13
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

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

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Embodiment Construction

[0048] In order to make the object of the present invention, the technical solution and advantages more clearly understood, the following in conjunction with the accompanying drawings and embodiments, the present invention will be further elaborated in detail. It should be understood that the specific embodiments described herein are merely used to explain the present invention and are not intended to qualify the present invention. Further, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0049] as Figure 1 Shown is a schematic diagram of a wear pattern correction method for engine main bearings provided in an embodiment of the present invention, comprising the following steps:

[0050] S1: Establish an analysis model of elastic hydrodynamic lubrication of the main bearing, and simulate and analyze the elastic hydrodynamic lubrication ...

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Abstract

The invention discloses a method and device for correcting the wear profile of an engine main bearing, belonging to the technical field of engine bearing power, wherein the realization of the method includes: establishing an elastic hydrodynamic lubrication analysis model of the main bearing, Carry out simulation analysis of lubrication conditions; based on the simulation analysis results of elastohydrodynamic lubrication of the main bearing, use the finite difference grid to correct the design profile of the main bearing, and establish the wear profile of the main bearing to simulate the main bearing after running-in A steady state of the main bearing; use the main bearing's wear profile to optimize the analysis model of the elastohydrodynamic lubrication of the main bearing. The invention simulates a steady state of the main bearing after running-in through the wear profile of the main bearing, which is more in line with the actual working state of the main bearing, thereby improving the simulation accuracy of the elastic dynamic lubrication analysis of the main bearing and reducing the reliability and durability of the main bearing. false positive rate.

Description

Technical field [0001] The present invention belongs to the field of engine bearing power technology, more particularly, relates to a wear pattern correction method and apparatus for engine main bearings. Background [0002] The main bearing is the main bearing component that converts the linear motion of the piston of the internal combustion engine into the rotational motion of the crankshaft, and is also an important friction pair during the working process of the internal combustion engine. In actual work, due to the tilt of the journal, deformation and bearing surface morphology effect and other factors, the edge of the bearing wears, which seriously worsens the lubrication of the main bearing, shortens the service life of the main bearing, and directly affects the reliability and durability of the internal combustion engine. [0003] The main bearing structure is special, the work bears the gas burst pressure and piston connecting rod group inertia force and other periodic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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