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Noise tester of engine belt tightener

A technology for engines and tensioners, which is applied in the field of measuring instruments, can solve problems such as low detection efficiency, inconvenient online detection of tensioners, and inaccurate test results, so as to reduce installation difficulty, improve test efficiency, and improve test results Effect

Inactive Publication Date: 2011-09-14
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the noise test of the tensioner is mainly to install the tensioner on the engine and use a microphone to collect the noise generated when the engine is running. This method is too low in detection efficiency and is not convenient for online detection of the tensioner during production. At the same time, due to the noise interference of the engine, the test results are often not very accurate

Method used

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  • Noise tester of engine belt tightener
  • Noise tester of engine belt tightener
  • Noise tester of engine belt tightener

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Embodiment Construction

[0011] The structure of the present invention is described in detail below in conjunction with accompanying drawing:

[0012] see image 3 , The tensioner noise tester includes a soundproof cover 6, a base 12, a sound level meter 15, a microphone 7, a stepper motor 13 and an engine train system, and the detected tensioner 5 is installed in the engine train system. The engine wheel train system and the microphone 7 are installed in the soundproof cover 6. The angle between the microphone 7 and the end face of the pulley of the tested tensioner 5 is 45 degrees, and the distance between the head of the microphone and the center of the tested tensioner pulley is 70mm. The output line of the microphone 7 is connected to the sound level meter 15 outside the soundproof cover, and the driving wheel 1 of the engine train system is connected with the stepper motor 13 outside the soundproof cover through the transmission shaft 14, and the stepper motor 13 and the soundproof cover 6 are i...

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Abstract

The invention provides a noise tester of an engine belt tightener. The noise tester comprises a sound-proof housing, a base, a sound level meter, a microphone, a stepping motor and an engine gear system, wherein a tightener to be detected is arranged in the engine gear system; the engine gear system and the microphone are arranged in the sound-proof housing; the microphone is close to the end surface of a belt pulley of the tightener to be detected; a data line of the microphone is connected to the sound level meter outside the sound-proof housing; a driving wheel of the engine gear system is connected with the stepping motor outside the sound-proof housing through a transmitting shaft; and the stepping motor and the sound-proof housing are arranged on the base. The noise tester is used for measuring the magnitude of noise generated when the tightener operates, therefore the installation difficulty when the tightener is tested can be reduced, and the test efficiency is improved; meanwhile the interference from other noises can be reduced, and the noise test result of the tightener is improved.

Description

technical field [0001] The invention is a measuring instrument, in particular, a measuring device capable of measuring the magnitude of the noise emitted by a tensioner during work. Background technique [0002] With the development of society, people now put forward higher requirements for the NVH performance of automobiles. In order to ensure that the noise in the automobile cabin is low, it is required that the tensioner and wheel train used in the automobile should ensure low noise during operation. Noise, now people have more and more demands for low-noise moving parts, which makes the noise of the tensioner, the most important sounding part of the wheel train noise, a parameter that is difficult to measure but must be measured and controlled. Designed for tensioner noise. The tensioner consists of 54 bases, 53 springs, 52 tensioner arms and 51 pulleys (such as figure 1 Shown), during normal operation, the pulley tensions the belt under the action of the spring, and r...

Claims

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Application Information

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IPC IPC(8): G01M15/00
Inventor 刘彦华刘进向以轩杨汶坪胡春林
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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