文档介绍：学兔兔
茎鲞窒
Developing Research
汽车噪声分析与降噪措施及噪声测量方法
张式杰
(陕西重型汽车有限公司,陕西西安 710200)
摘要:随着汽车工业和城市交通的发展,城市汽车拥有量日益增加。据国外资料统计,机动车辆所
包括的总功率比其他各种动力机构功率的总和大 20倍以上。它们所辐射的噪声约占整个环境噪声能量
的 75%。各种调查和测量结果表明,城市交通噪声是目前城市环境中最主要的噪声源。因此,降低机
动车辆本身的噪声是减少城市环境噪声最根本的途径。
我公司在新车上采取降噪措施,达到国家噪声限值要求, 目前效果良好。本文对汽车噪声进行分析,
以及采取的相应降噪技术措施和国家对汽车噪声的测量方法予以说明,仅供参考。
关键词:噪声;辐射;振动;降噪
Analysis onAutomobile Noise,Noise Reduction Measures and Noise
M easuringMethod
ShiJie—zhang
(SHAANXIHEAVY DUTY ANTOM OBILECO.,LTD Automotive Engineering R&D Institute)
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mostpredominant noise source urbanthe in environment the ownin noise ofmotor vehicles
is an essential wayan essentialis reduce to theurban ambient noise.
pany has appliednoise reduction measures newto carsmeetto the requirements ofthe noise
measureshave demonstratedso far agood analyzes thenoise motorof vehicles,and describes the
co