汽车变速器齿轮修形对传动系统NVH性能的影响

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中图分类号：U463.2 文献标识码：A 文章编号：1003-8639（2026）02-0104-03

Influence of Automotive Transmission Gear Repair Shape on Transmission System NVH Performance

Zhu Jiarui (Yancheng Institute of Technology,Yancheng 224Ooo, China)

【Abstract】 With the development of automotive power system towards electrification and quietness, the transmission,as thecore assemblyof power transmision,hasbecomeanimportantindicatorofthequalityof the whole vehicle,suchasnoise,vibration,acousticvibrationroughness,andotherperformances.Theinteral excitationgenerated by gear meshing is the maincauseof gearbox whistlingand shaking,andreasonable tooth micro-shapingcaninhibit such excitation and improve thesmoothnessof transmision.This paper mainly focuses on the mapping relationship between gear trimming parametersand the NVH performanceof the gearbox system level,and builds upa special testplatform for semi-anechoicchamber to systematicalystudythevibration responseand soundradiationcharacteristics under diffrent trimming strategies.The results show that the composite reshaping based on the elastic deformation ofthe system can significantlyreduce the time-varying meshing stifnessfluctuationof the gear pair,andreduce the meshingfrequencynoise ofaspecificorder.Itis expectedthatthe findingsof thispaper canprovide theoreticalsupportanddatareference forthe engineering application of low-noise gear design for transmission.

【Key words】automotive transmission； gear modification；NVH performance； transmission error

0 引言

在现代汽车工程领域，乘坐舒适性与车内声品质已成为消费者感知车辆档次的核心因素。（剩余4807字）