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Test system for vehicle acoustical power and test method thereof

A test system and test method technology, applied in vehicle testing, machine/structural component testing, measuring devices, etc., can solve the problem that it is difficult to implement horizontal comparison of competing vehicles and benchmark vehicles, and it is difficult to meet the operating conditions and loads of vehicles. level and other issues, to achieve the effect of simple and easy-to-use test methods and data processing methods, and convenient layout.

Inactive Publication Date: 2014-08-20
CHINA AUTOMOTIVE TECH & RES CENT
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AI Technical Summary

Problems solved by technology

The current sound power test of the powertrain is still mainly based on the bench test, which is difficult to meet the actual operating conditions and load levels of the car, and it is also difficult to implement a horizontal comparison with competing cars and benchmark cars

Method used

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  • Test system for vehicle acoustical power and test method thereof
  • Test system for vehicle acoustical power and test method thereof
  • Test system for vehicle acoustical power and test method thereof

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Embodiment Construction

[0032] In order to have a deeper understanding of the present invention, a specific embodiment is listed below, and the present invention is further described in detail in conjunction with the accompanying drawings.

[0033] This embodiment is a sound power testing system and method for different parts around the engine of the vehicle under the actual vehicle state.

[0034] Such as figure 1 and figure 2 As shown, the test system includes: 4 (6 noise sensors, arranged as Figure 3-Figure 5 shown), pulse signal sensor 5, signal acquisition equipment and fixed bracket, noise sensor 4 is installed on the fixed bracket, and the fixed bracket is placed at the position to be measured of vehicle sound power, pulse signal sensor 5 is installed at the position of the crankshaft pulley of the vehicle, and the noise sensor 4 and the pulse signal sensor 5 are both connected to the signal acquisition device 7 through the wiring harness 6 .

[0035] A test method utilizing the above-men...

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Abstract

The invention provides a test system for a vehicle acoustical power. The test system includes a noise sensor, a pulse signal sensor and a signal acquisition device. The noise sensor is installed on an acoustical-power to-be-tested part of a vehicle. The pulse signal sensor is installed at the position of a vehicle crankshaft belt pulley. Both of the noise sensor and the pulse signal sensor are connected with the signal acquisition device through wire harnesses. The test system is capable of carrying out acoustical power test on main noise sources at different parts under a real-vehicle state, such as engine acoustical power, gas vent nozzle acoustical power and tyre acoustical power and the like. The test system reflects fully the acoustical power levels of the main noise sources under a real-vehicle operating work condition so that defects of current acoustical-power bench testing are compensated for. The test system is capable of obtaining effective comparison data and has a significance effect on a vehicle model development period and comparison work of noise levels of a competitive-product vehicle and a bench marking vehicle; and the whole set of system is convenient to arrange and a test method and a data processing method are simple and easy to use.

Description

technical field [0001] The invention relates to a vehicle sound power testing system and method, belonging to the technical field of vehicle testing. Background technique [0002] The sound power of the powertrain is mainly used to evaluate the noise radiation energy of the powertrain of the car. The powertrain with high sound power has a correspondingly higher impact on the noise inside and outside the car, which will not only affect the noise comfort in the car, but also It affects the satisfaction of the national standard level of noise outside the vehicle. In order to obtain a lower noise level, more sound absorption and insulation treatment must be applied to it. The current powertrain sound power test is still mainly based on the bench test, which is difficult to meet the actual operating conditions and load levels of the car, and it is also difficult to implement a horizontal comparison with competing cars and benchmark cars. Contents of the invention [0003] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007
Inventor 邓江华李洪亮顾灿松王海洋陈达亮李灿
Owner CHINA AUTOMOTIVE TECH & RES CENT
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