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요약정보
某乘用车小油门加速声品质问题分析 / Analysis of Accelerating Sound Quality of a Passenger Car with Small Throttle
Resource Type
Academic Journal
Authors
谢旭
;
李鑫
;
吴文栋
;
蒋邹
;
黄杰巧
;
XIE Xu
;
LI Xin
;
WU Wendong
;
JIANG Zou
;
HUANG Jieqiao
Source
汽车实用技术 / Automobile Technology
. 48(9):162-167
Subject
声品质
半阶次振动
传递路径
发动机悬置
噪声粗糙
Language
Chinese
ISSN
1671-7988
Online Access
Find it @ DONGA
초록
针对某款乘用车小油门加速过程中车内噪声粗糙感明显的声品质问题,首先对噪声时域数据进行频谱特性分析,得到造成噪声粗糙感明显的原因是车内半阶次声压幅值调制.其次通过传递路径试验分析,确定车内半阶次激励源是发动机半阶次振动,主要传递路径是动力总成悬置.最后通过提高前围隔音量,优化悬置刚度及降低空调管隔振垫硬度,明显降低了车内噪声的半阶次特征,加速声品质得到有效改善.
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