Testing structure and method for engine timing system dynamic performance

A technology of dynamic performance and timing system, which is applied in the field of timing belt or chain device, which can solve problems such as easy cracking and short service life, and achieve the effects of reducing wear elongation, reducing noise and improving fuel consumption rate

Inactive Publication Date: 2019-01-01
BRILLIANCE AUTO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Modern cars pay more and more attention to the NVH performance of the engine, and the timing chain system as a moving mechanism will generate a lot of noise, which is why many engines still use the belt timing system, but the timing belt has a short service life , easy to crack and other defects, therefore, rationally adjusting the tensioner to control the amplitude of the plunger and reduce the noise of the chain drive system can provide better support for the overall performance of the engine

Method used

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  • Testing structure and method for engine timing system dynamic performance
  • Testing structure and method for engine timing system dynamic performance
  • Testing structure and method for engine timing system dynamic performance

Examples

Experimental program
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Embodiment Construction

[0011] Such as Figure 1-3 As shown, the chain 1 includes two states, the first is the original factory state chain, and the second is the elongation rate of 0.7% state chain. Its purpose is to measure the stability of the timing system at the initial state and the timing system at the design life state.

[0012] The sprocket 2 is an important part of the timing system, and the test sprocket does not need to be subjected to any tooth profile heat treatment, which reduces the test cost.

[0013] The restructured moving guide rail 3 is mainly fixed by a displacement sensor magnetic bar to avoid a pit 3-1 for an adapter block, a pressure sensor installation pit 3-2, a pressure sensor wire avoidance hole 3-3, and a tensioner plunger radial limit The block mounting bolt hole is composed of 3-4 structures.

[0014] The restructured tensioner 4 is mainly composed of a restructured tensioner housing 4-1, a restructured tensioner plunger 4-2, a tensioner plunger radial limit plane 4-...

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Abstract

The invention relates to a testing structure and method for engine timing system dynamic performance. The structure includes a chain, a sprocket wheel, a reconstructed moving guide rail, a reconstructed tensioner, a displacement sensor assembly, a pressure sensor assembly, a tensioner plunger radial limit block assembly and a reconstructed sprocket wheel chamber cover. Through the adjustment of anoil leakage gap between a tensioner plunger and a shell and tensioner plunger spring force, the optimum pressure, amplitude and chain tensile force of the tensioner can be obtained through measuring,and thus, timing system dynamic performance can have advantages of reducing system friction loss and transmission system noise and enhancing system stability.

Description

technical field [0001] The invention relates to a device for an automobile engine acting on a timing belt or a chain, in particular to a structure and method for testing the dynamic performance of an engine timing system. Background technique [0002] The timing chain system of the automobile engine works in an environment with oil injection lubrication, and the tensioner tensions the chain through the pressure of the engine oil. In order to meet the stability of the engine timing system during the development process of the existing engine, a large tension force is applied to the timing chain, that is, the plunger spring force and hydraulic pressure of the tensioner are very large, and then the engine durability test is evaluated. Timing system stability. If the assessment is passed, the timing system will be mass-produced, and if it fails the readjustment tension test. This kind of development process will have the following risks. First, excessive tension will accelerat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/02
CPCG01M15/02
Inventor 董其超张治国李振华黄昌瑞
Owner BRILLIANCE AUTO
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