某V型发动机噪声声源及声品质研究  

Study of Noise Sources and Acoustic Quality of a V-type Engine

作　　者：张发雄[1] 胡栋亮 曾德林[1] 廖升友[1] 苏文强[1] 卢一乐 官维[2] Zhang Fa-xiong;Hu Dong-liang;Zeng De-lin;Liao Sheng-you;Su Wen-qiang;Lu Yi-le;Guan Wei(Guangxi Yuchai Machinery Co.,Ltd.,Guangxi Yulin 537000;College of Mechanical Engineering,Guangxi University,Guangxi Nanning 530004)

机构地区：[1]广西玉柴机器股份有限公司,广西玉林537000 [2]广西大学机械工程学院,广西南宁530004

出　　处：《内燃机与配件》2025年第1期21-23,共3页Internal Combustion Engine & Parts

基　　金：广西重点研发计划(桂科AB22080084);广西科技重大专项(桂科AA22068102)。

摘　　要：本文对某型号V型发动机的前端盖板和左缸罩盖进行结构材料优化,以降低振动噪声并在对优化处理后的发动机进行噪声声源以及噪声声品质进行分析。优化后的声源分析结果显示,前端盖板在2200~2800 Hz频率范围内的振动幅度减小,2450 Hz的共振消失,噪声显著降低;声源峰值频率从1200 Hz升至1340 Hz,振动峰值略增。左缸罩盖在相同频率范围内的振动幅度也减小,2450 Hz共振消失,噪声明显降低;前端1650 Hz的小峰值消失,1400~2000 Hz的噪声减小。怠速时,左侧2000~4000 Hz频段噪声减少;标定点时,2300~3500 Hz频段噪声降低。本研究提供了有效的发动机降噪解决方案,具有实际应用价值。This study focuses on optimizing the structural materials of the front cover and left cylinder cover of a specific V-type engine to reduce vibration noise.The optimized sound source analysis results show that the vibration amplitude of the front cover plate decreases in the frequency range of 2200~2800 Hz,the resonance at 2450 Hz disappears,and the noise is significantly reduced.The peak frequency of the sound source increases from 1200 Hz to 1340 Hz,and the vibration peak slightly increases.The vibration amplitude of the left cylinder cover also decreases in the same frequency range,the resonance at 2450 Hz disappears,and the noise is significantly reduced;the small peak at 1650 Hz in the front disappears,and the noise in the range of 1400~2000 Hz decreases.At idle speed,the noise in the left side frequency range of 2000~4000 Hz decreases;at the calibration point,the noise in the frequency range of 2300~3500 Hz decreases.This study provides an effective engine noise reduction solution with practical application value.

关 键 词：V型发动机 发动机降噪 NVH性能 结构材料优化 声源分析 声品质分析 

分 类 号：TK421.6[动力工程及工程热物理—动力机械及工程]