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Test bench for acoustic performance development and verification of intake and exhaust system

A technology of acoustic performance and test bench, which is applied in the direction of vehicle testing, mechanical component testing, machine/structural component testing, etc., and can solve problems such as the inability to accurately test the noise of pipelines with airflow

Inactive Publication Date: 2019-01-11
拾音汽车科技(上海)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the intake and exhaust system, the airflow in the pipe is an important factor affecting the acoustic performance of the muffler element, but the existing testing equipment cannot accurately test the noise in the pipe with airflow

Method used

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  • Test bench for acoustic performance development and verification of intake and exhaust system
  • Test bench for acoustic performance development and verification of intake and exhaust system
  • Test bench for acoustic performance development and verification of intake and exhaust system

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Embodiment Construction

[0033]In order to make it easy to understand the technical means, creation features, work flow, and use methods of the present invention to achieve the purpose and effect, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. In the description, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or Integral connection can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediary, and the internal communication of two components can be used. Obviously, the described embodiments are only part of the embodiments of the present invention. rather than all examples. Based on the embodiments of the present inve...

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Abstract

The invention provides a test bench for acoustic performance development and verification of an intake and exhaust system, comprising a standing wave tube assembly, a gas source system, an airflow control and acquisition system, an acoustic data acquisition system and a post-processing software platform. A sound source system is provided on both sides of the standing wave tube assembly. The gas source system, the airflow control and acquisition system are connected to the sound source system. The acoustic data acquisition system and the post-processing software platform are connected to the standing wave tube assembly. The sound source system emits sound waves, and the air source system generates airflow. The sound waves and the airflow enter the standing wave tube assembly, and the airflow is monitored by the airflow control and acquisition system. A sound signal is collected by the acoustic data acquisition system, and the obtained data is transmitted to the post-processing softwareplatform for calculation processing. According to the test bench for acoustic performance development and verification of intake and exhaust system, a proven dual source transfer matrix method is used, he frequency range of the test process can be customized, commonly used intake tuning components and exhaust mufflers are tested with low frequency, and broadband muffler of turbocharger is tested with the high frequency.

Description

technical field [0001] The invention relates to the technical field of bench testing for acoustic performance, in particular to a test bench for developing and verifying the acoustic performance of an intake and exhaust system. Background technique [0002] In recent years, with the rapid development of the automobile industry, the problem of automobile noise pollution has become more and more serious. The noise of the intake and exhaust system is an important part of the noise of the vehicle, and it is particularly important to reduce the noise of the intake and exhaust system. The main means of noise reduction is to use noise reduction components in the pipeline, and the development and verification of noise reduction components is to establish Based on accurate testing of its acoustic performance. [0003] In addition, due to the high speed and aerodynamic characteristics of the turbine and compressor wheel, the turbocharger will generate high-frequency noise before and ...

Claims

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Application Information

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IPC IPC(8): G01M13/00G01M17/007
CPCG01M13/00G01M17/007
Inventor 吴仍广汤众
Owner 拾音汽车科技(上海)有限公司
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