System for measuring booster noise

A supercharger and noise technology, which is applied in the direction of measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve problems such as the inability to measure and analyze supercharger noise, achieve a wide range of changes, reduce noise, and measure accurately Effect

Inactive Publication Date: 2013-02-20
ZHEJIANG MEIDE MASCH CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to provide a system for measuring supercharger noise, so as to solve the technical problem that the noise of the supercharger cannot be independently measured and analyzed in the prior art

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  • System for measuring booster noise

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Embodiment Construction

[0020] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0021] see figure 1 , a preferred embodiment of the present invention provides a system for measuring supercharger noise, comprising a turbine intake simulation device 10, a semi-anechoic chamber 20, which communicates with the gas outlet of the turbine intake simulation device 10 and is placed in a semi-anechoic chamber. The supercharger 21 in the chamber 20, the spectrum generator 22 built in the semi-anechoic chamber 20, the control device 30 for controlling the turbine air intake simulation device 10, and the intake parameters and semi-anechoic air intake parameters of the turbine air intake simulation device 10 are displayed. A display device for sound decibels in the sound chamber 20 (not shown in the drawings). The supercharger noise measure...

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Abstract

The invention provides a system for measuring booster noise. The system comprises a turbine air inlet simulation device, a semi-anechoic room, a booster, a frequency spectrum generator, a controller and a display device, wherein the booster is communicated with an air outlet of the turbine air inlet simulation device and placed in the semi-anechoic room, the frequency spectrum generator is internally installed in the semi-anechoic room, the controller is used for controlling the turbine air inlet simulation device, and the display device is used for displaying air inlet parameters of the turbine air inlet simulation device and indoor sound decibels of the semi-anechoic room. The system for measuring the booster noise has the advantages that the turbine air inlet simulation device can set the air inlet parameters close to the turbine through the simulation of the turbine air inlet, so that the measurement is accurate; and the semi-anechoic room can eliminate external acoustic disturbance and indoors reflected noise wave disturbance, the noise spectrum measured by the frequency spectrum generator is used as the acoustic spectrum of the booster, namely, the acoustic spectrum of the booster can be independently measured, and the basis is provided for reducing the noise of the booster.

Description

technical field [0001] The invention relates to the field of measuring devices, in particular to a system for measuring supercharger noise. Background technique [0002] The exhaust gas turbocharger is small in size and complex in geometry, and the turbine plays a certain role in alleviating the exhaust noise of the engine. However, the supercharger has a large flow rate and a fast airflow speed, and it produces high-frequency screams when it works; in addition, it will also produce some abnormal noises induced by certain exciting factors. Especially for the supercharged gasoline engine, the gasoline engine works relatively softly, and the noise of the supercharger is more prominent. Conflict over cars with supercharged gasoline engines is growing. Therefore, it is more important to reduce the noise of the supercharger. [0003] At present, there is no special test device for measuring the noise of the supercharger. Generally, it is tested together with the engine on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00
Inventor 潘秀虎陆家祥田春如王道通杜钊顺汪裕民
Owner ZHEJIANG MEIDE MASCH CO LTD
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