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A test device and test method for pressure relief noise of a supercharger

A technology for testing devices and superchargers, which is applied to measuring devices, instruments, and measuring ultrasonic/sonic/infrasonic waves, etc. It can solve the problems of unfavorable pressure relief noise, late development of superchargers, etc., and achieve low cost and accurate test results Reliable, easy-to-implement application results

Active Publication Date: 2018-08-10
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, when the vehicle is matched, the development of the supercharger is too late, which is not conducive to early detection and solution of the pressure release noise problem

Method used

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  • A test device and test method for pressure relief noise of a supercharger
  • A test device and test method for pressure relief noise of a supercharger
  • A test device and test method for pressure relief noise of a supercharger

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Embodiment Construction

[0033] The present invention will be described in detail below with reference to the accompanying drawings.

[0034] The supercharger compressor casing 4 is a specially treated casing, see appendix figure 1 . Remove the compressor impeller of the supercharger, and use the tooling to separate the pressurized gas channel on the compressor shell from the intake channel. See the attachment for the principle of the treatment method. figure 2 .

[0035] like image 3 As shown, the supercharger compressor housing 4 and the pressure regulating device 2 are arranged in the anechoic chamber, and the pressure regulating device 2 is connected to the compressed air source 1 with an intake hose, and is image 3 In the direction of air flow shown in , connect the air outlet of the treated supercharger compressor housing 4 to the rear of the pressure regulator 2 with an air intake hose. The pressure regulating device 2 regulates and controls the pressure of the gas passing through the pr...

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Abstract

The invention discloses a device for testing the decompression noise of a supercharger. The device comprises an air flow pressure control system, a supercharger decompression valve control system, and a noise and pressure data acquisition system. A tested supercharger compressor housing is subjected to special treatment. The impellers of a supercharger compressor are removed. A pressurized gas channel on the supercharger compressor housing and an air inlet channel are separated. Also disclosed is a method of the device for testing noise. The device and the method eliminate the interference of the operating noise of an engine of a vehicle, eliminate the interference of synchronous noise, subsynchronous noise, and blade scavenging noise when the supercharge operates, and is accurate and reliable in test results, low in cost, simple in processing method, and easy to implement and use.

Description

technical field [0001] The invention relates to the technical field of noise testing of an automobile turbocharged air intake system, in particular to a testing device for pressure relief noise of a supercharger. Background technique [0002] Since turbocharging makes less changes to the engine, it is easy to increase power. It uses exhaust gas to drive the supercharger, recovers part of the energy, improves the mechanical efficiency and thermal efficiency of the engine, and at the same time, because the fuel is more fully burned, the fuel economy is improved, and the emissions are improved, so it is widely used. [0003] The adoption of turbocharger brings new problems to the NVH performance of the whole vehicle. How to test and analyze the noise generated during the working process of the turbocharger in order to optimize and improve the structure of the turbocharger has become a research direction. The CN201210453009.9 patent document proposes a system for measuring the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H17/00
Inventor 郭付洋张爱东邓晓龙
Owner CHERY AUTOMOBILE CO LTD