For the pursuit of perfect people, vehicle noise is often unbearable, in ordinary life, because the car noise, tire noise, road noise and other various sound mixed together, which makes the car in the road, the car does not appear quiet, let a person be agitated noise. Generally speaking, vehicle noise has four "source:" causing engine noise, tire noise in the air, noise and the noise of car body structure.

1.发动机噪音。除发动机体发出的机械声外，还包括进气系统噪音，即高速气体经空气滤清器、进气管、气门进入气缸，在流动过程中，会产生一种很强的气动噪音。发动机噪音主要由挡火墙和驾驶室的前底板部位传入驾驶舱。

The 1 engine noise. In addition to the mechanical sound engine body issued outside, also include the intake system noise, namely the high speed gas passes through the air filter, air inlet pipe, valve into the cylinder, in the flow process, will produce a strong aerodynamic noise. The noise of the engine is mainly composed of a front bottom parts retaining walls and the cab afferent cockpit.

2.轮胎噪音。一般的胎噪主要由三部分组成：一是轮胎花纹间隙的空气流动和轮胎四周空气扰动构成的空气噪音；二是胎体和花纹部分震动引起的轮胎震动噪音；三是路面不平造成的路面噪音。

2 tire noise. General tire noise is mainly composed of three parts: one is the air flow and the air around the tire tread tire air gap disturbance noise constitutes; two is the carcass and tread shaking caused by tire vibration noise; three is the road noise caused by uneven pavement.

3.空气噪音。一是风噪，就是由车身周围气流分离导致压力变化而产生的噪音；二是风漏，或叫吸出音，是由驾驶室及车身缝隙吸气而与车身周围气流相互作用而产生的噪音；三是其他噪音，包括空腔共鸣等。

The 3 air noise. One is the wind noise, is a body around the flow separation causes pressure changes due to noise; two is the wind leakage, or call suckout tone, is composed of a cab and body slot suction and air flow around body interaction and noise; three is the other noise, including the cavity resonance etc..

4.车身结构噪音。主要是受两个方面因素影响，一是车身结构的震动传递方式，二是车身上的金属构件由于在里外作用下产生震动而产生噪音。

4 body structure noise. Is mainly affected by two factors, one is the structure of the body vibration transfer mode, two is a metal member on the body and produce noise due to vibration in the inside and outside under the action of.

对付这些噪音我们可以采用两种方法：

We can deal with the noise by two methods:

第一种就是从根本上把让噪音消失或者变小，要从根本上消除噪音首先我们先来了解下汽车的噪音到底来源于哪里呢？有针对性地找出车上不同的噪音来源，才能对症下药，治“噪音”，才能药到病除。比如是轮胎的噪音就可以选择一款低胎噪的轮胎来降低噪音。这样才是根本性的解决问题。

The first is from the root let noise disappear or become smaller, to fundamentally eliminate noise first we learn the noise of automobile exactly come from where? Targeted to find the car of different sources of noise, to prescribe the right medicine cure "noise", to the disease. For example is the noise of tire can choose a low noise tire tread to reduce noise. This is fundamentally solve the problem.

而第二种则是做全车隔音工程，这也是大部分人所采用的方法所以我们着重介绍一下的，虽然外面听起来噪音还是没有变，但是座在驾驶室里面是却安静了许多。汽车隔音一般适合配置较低、舒适性较为一般的或更低端的小车。如果是高档车，原本的隔音已经相当好，再去花钱做隔音反而多此一举。也有车友对汽车升级隔音之后的效果提出质疑，认为汽车升级隔音之后所屏蔽噪音的效果甚微甚至没效果，也增加了车辆的负重、油耗，这主要是车友选择的隔音产品的品牌和品质不当所致。汽车隔音应该怎么癣怎么做呢？

While the second one is to do the whole vehicle noise project, this is a method used by most people so we mainly introduce, although outside sounds like noise or no change, but the seat in the cab which is quiet a lot. The automobile sound insulation is generally suitable for low configuration and comfort of more general or more low-end car. If it is a luxury car, the original sound is already quite good, go to spend money to do noise but superfluous. There are fans questioned after autombile upgrades soundproof effect, think car upgrades soundproof the noise shielding effect even with little to no effect, but also increase the vehicle's weight, fuel consumption, which is mainly the riders choose soundproof products brand and quality of improper. The automobile sound insulation should be how tinea do?

车门隔音施工操作流程

Door sound insulation construction process

第一步：卸下车门内衬板。

The first step: remove the door liner board.

第二步：静音材料安装。清除门内脏污、油污和残胶，如不清除干净，减振材料不易粘贴，并容易脱落，用预处理剂涂将要粘贴的表面做减振前预处理。

The second step: the silent material installation. Remove door visceral dirt, grease and residue, if not cleaned, the damping material is not easy to paste, and is easy to fall off, with surface pretreatment agent will glue the preprocessing before damping.

第三步：贴减振、吸音材料。剪裁适当大小的减振材料粘贴于门内，并用胶刮板均匀刮减振材料表面，使其充分黏附于车门内，剪合适尺寸的吸音材料粘贴于减振材料商，粘贴时要以扬声器背面为中心。

The third step: put the vibration damping and sound-absorbing material. Cut the appropriate size of the damping material is pasted on the door, and the rubber scraper scraping with uniform damping material surface, which fully adhered to the inner door, cut the appropriate size of the sound-absorbing material is pasted on the damping material business, sticking to the speaker on the back as the center.

第四步：适当应用胶管。如果粘贴中影响到开关把手的活动，就在门开关把手上安装配线软管。

The fourth step: the appropriate use of hose. If to affect the activity of switch handle paste, on the door switch wiring hose is installed on the handle.

第五步：贴反音材料。剪合适尺寸的反音材料粘贴于内衬板上，并用胶刮板均匀的施压，使其充分粘附于内衬板上，不要粘贴内衬板装插头使用的小孔。

The fifth step: anti sound materials. Cut the appropriate size of the reverse sound material is pasted on the lining board, pressing and glue scraper uniform, to make it fully adhered to the lining board, holes do not paste lining board plug used.

第六步：贴密封材料。在扬声器周围和固定板周围粘贴密封材料，增强隔音会增加油耗。

The sixth step: put up sealing material. In the speaker around and around the fixed plate pasting sealing materials, enhance the noise will increase fuel consumption.