Large Passenger Car Noise And Its Control

With the development of our nation' s economy and the people' s living standard, passengers pay more attention to the coach comfort. The noise inside the coach is an important index to appraise the coach comfort , therefore , the coach manufacturers have more concerns about the control of noise . however , there are few little research documents on the coach noise control all around the country ,all of coach manufacturers are still finding the way in the noise control.This article firstly deal with the sound source, noise measurement and analysis , noise control principle and some basic noise control technology , then elaborate the current noise detection standard and method for the coach in our country, the noise mechanism .characteristics and the measures of noise-controlling , finally .describe the actions of noise control, noise detection and optimization in our coach detailedly, which have met with the expectation .Anyhow ,if the coach manufacturers should aim to low noise through the reasonable vehicle shape and construction , low noise chassis components , simultaneously, applying sound insulation , absorption .vibration absorption technology for the different noise source on the scientific and economical principle . thus the noise in the coach can be controlled effectively .