Vehicle interior noise testing road surface, laying method of vehicle interior noise testing road surface, and vehicle interior noise testing method

A technology of vehicle interior noise and test method, which is applied in the field of automobiles, can solve problems such as accelerated vehicle interior noise testing, inability to fully stimulate low-frequency noise in the vehicle, and unsuitability for vehicle noise testing, so as to achieve more competitiveness and improve NVH levels Effect

Active Publication Date: 2016-02-03
GUANGZHOU AUTOMOBILE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, except for the performance road, other roads in the major automobile proving grounds are not suitable for automobile noise testing, such as Belgian road, washboard road, and resonance ro

Method used

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  • Vehicle interior noise testing road surface, laying method of vehicle interior noise testing road surface, and vehicle interior noise testing method
  • Vehicle interior noise testing road surface, laying method of vehicle interior noise testing road surface, and vehicle interior noise testing method
  • Vehicle interior noise testing road surface, laying method of vehicle interior noise testing road surface, and vehicle interior noise testing method

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Embodiment Construction

[0032] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

[0033] Please refer to figure 1 As shown, Embodiment 1 of the present invention provides a road surface for vehicle interior noise testing, including a surface layer 1 with a thickness of 120 mm, which includes particles mixed in a weight ratio of 1:1, with particle sizes of 10 mm and 15 mm respectively. The stone materials 11 and 12 are filled with modified asphalt 13 between the stone materials. Specifically, the particle size of the stone 11 is 10 mm, the particle size of the stone 12 is 15 mm, and the weight ratio of the stone 11 to the stone 12 is 1:1.

[0034] The surface layer 1 has a porosity of 4.0% and a construction depth of 4.8 mm. In addition, comprehensively considering the laying cost and testing convenience, the paving width of the test road in this embodiment is 3 meters, and the paving length is 180-200 meters, preferably 200 meters. ...

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Abstract

The invention provides a vehicle interior noise testing road surface, a laying method of the vehicle interior noise testing road surface and a vehicle interior noise testing method. The vehicle interior noise testing road surface comprises a surface layer of which the thickness is 120mm, wherein the surface layer comprises stone materials mixed at a weight ratio of 1:1; the particle sizes of the stone materials are 10mm and 15mm respectively; and gaps between the stone materials are filled with modified asphalt. According to the invention, road surface parameters of a rough road surface are designed and determined; the testing road surface is added and perfected; through a test of vehicle interior noise on the rough road surface, a testing and evaluation scheme is provided for vehicle interior noise reduction; the NVH (Noise Vibration and Harshness) level of a finished automobile is raised; and the product performance is more competitive.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a vehicle interior noise test road surface, a laying method thereof, and a vehicle interior noise test method. Background technique [0002] The noise inside the car is generally greatly affected by the roughness of the road surface structure. When a car runs at the same speed on a road with different roughness, the noise inside the car and the intelligibility of speech will be different. When the car is running at a medium speed, the noise inside the car usually comes from tires and wind noise. When driving on a rough concrete road, in addition to tire noise and wind noise, there is also low-frequency noise from the road to the vehicle. Most cars have the problem of large low-frequency noise. In order to better study this problem, in the development process of car NVH (Noise, Vibration, Harshness, noise, vibration and comfort), it is a kind of comparison to test and analyze on rough r...

Claims

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Application Information

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IPC IPC(8): E01C7/18G01B17/08
Inventor 陆继宏徐仰汇陈军祥王理周叶志刚
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD
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