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Method and device for passenger car engine sound insulation and noise reduction

An engine and hood technology, applied in the field of machinery, can solve the problems of reducing the passenger comfort, the threat of safe driving of the car, damage to the driver's hearing, etc., and achieves the effects of simple structure, practicality and reliability, and low cost.

Inactive Publication Date: 2013-09-25
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The noise inside the car mainly comes from the engine. Excessive noise will not only damage the driver's hearing, but also make the driver tired quickly, which poses a great threat to the safe driving of the car and greatly reduces the comfort of passengers.

Method used

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  • Method and device for passenger car engine sound insulation and noise reduction

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Embodiment Construction

[0011] Embodiments of the present invention: passenger car engine noise reduction method, in the car body of the passenger car, an engine cover is set, the engine cover is completely closed to the part where the engine is in the passenger car body, so that the engine and the inside of the passenger car body are isolated from each other, and The sound-insulating foam material is set in the hood to reduce the noise of the passenger car engine.

[0012] The structure of the device for sound insulation and noise reduction method of passenger car engine is as follows figure 1 Shown, comprise engine cover 2, the top and bottom opening of engine cover 2, be provided with engine cover cover plate 1 at the top of engine cover 2, be connected by hinge 8 between engine cover 2 and engine cover cover plate 1, in The inner side of the engine cover 2 and the engine cover cover plate 1 is provided with a sound insulation layer 6; the engine cover cover plate 1 is provided with a buckle 9, an...

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Abstract

The invention discloses a method and a device for passenger car engine sound insulation and noise reduction. An engine hood is arranged in a car body of a passenger car, the portion, in the car body of the passenger car, of the engine hood is enabled to be totally enclosed to enable the engine and the inside of the car body of the passenger car to be isolated from each other, and sound insulation foam materials are arranged in the engine hood so as to reduce noise of the engine of the passenger car. By the method and the device, influences on the interior of the passenger car caused by noise produced by the engine of the passenger car can reduced effectively, tests on Wanda minibuses prove that noise nearby a driver is reduced by more than 2dB, the engine hood is integrally of a glass fiber reinforced plastic structure, weight of the engine hood is not increased on the condition of not increasing sealing stripes and the sound insulation foam materials. The method and the device are particularly suitable for front-engine passenger cars.

Description

technical field [0001] The invention relates to the field of machinery, in particular to a method and device for sound insulation and noise reduction of passenger car engines. Background technique [0002] With the vigorous development of my country's automobile industry, the number of automobiles has increased rapidly in recent years, and the problem of automobile noise has become more and more prominent, and has become the most important noise source in the urban environment. The noise inside the car mainly comes from the engine. Excessive noise will not only damage the driver's hearing, but also make the driver tired quickly, which poses a great threat to the safe driving of the car and greatly reduces the comfort of passengers. The noise characteristic of the car is an important indicator to measure the quality of the car. In order to control the impact of car noise on the surrounding environment and minimize the harm of people from car noise, there are strict regulation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R13/08
Inventor 何锋李一鸣蒋雪生李欢吴海波陈春雪杨绿
Owner GUIZHOU UNIV
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