CAJ | 학술논문

随着汽车工业的迅速发展，人们对于汽车的振动噪声控制的要求越来越严格。据有关资料表明，汽车噪声严重地污染着城市环境，影响着人们的生活、工作和健康。如今，NVH(Noise噪音、Vibration振动、Harshness声振粗糙度)的抑制已成为汽车研发与生产的重点概念。文章通过对某轿车在怠速工况下进行基本性能测试，找到了排气系统是该试验车的最主要振动噪声源之一；然后，对排气系统进行了试验，验证了车内振动噪声的来源；最后，通过汽车CAE技术，使排气系统吊钩位置得到改进，实现排气系统NVH性能优化，从而有效地降低了车内的振动噪声。
수착기차공업적신속발전，인문대우기차적진동조성공제적요구월래월엄격。거유관자료표명，기차조성엄중지오염착성시배경，영향착인문적생활、공작화건강。여금，NVH(Noise조음、Vibration진동、Harshness성진조조도)적억제이성위기차연발여생산적중점개념。문장통과대모교차재태속공황하진행기본성능측시，조도료배기계통시해시험차적최주요진동조성원지일；연후，대배기계통진행료시험，험증료차내진동조성적래원；최후，통과기차CAE기술，사배기계통조구위치득도개진，실현배기계통NVH성능우화，종이유효지강저료차내적진동조성。
With the rapid development of automobile industry, people are more and more strict to the requirement of the control of vehicle noise and vibration. According to the relevant data, the noise from vehicle polluted city environment seriously, affecting people's lives, work and health. Nowadays, the suppression of NVH (Noise, Vibration and Harshness) has become the key concept of research, development and production of vehicle. By testing a car’s basic performances in idling process, this article finds that the exhaust system is one of the most main vibration noise’s sources in the cabin;Then, it makes a test of the exhaust system, verifying the source of the in-car vibration noise;Finally,through a CAE technology on vehicle,it makes the position of the hook improved, achieves the optimization of the performance of the exhaust system in NVH,and reduces the vibration noise of the cabin effectively.