摘 要：针对某新能源牵引车行驶过程中出现的驾驶室异响与振动问题，本文基于“源-路径-响应”的层级化排查思路，从整车至零部件层面开展了系统性研究，最终确认该问题的根源在于传动系统。通过优化传动系动平衡、调整模态频率、改善当量夹角及提升悬置隔振性能，有效解决了驾驶室的噪声与振动问题。
关键词：驾驶室异响及抖动；动平衡；当量夹角；传动系模态；悬置优化
中图分类号：U467.1；U463.2 文献标志码：A DOI：10.15917/j.cnki.1006-3331.2026.02.010
Analysis and Optimization of Cab Abnormal Noise and Vibration Issues in a New Energy Tractor Truck
GAO Jingwei, TANG Xian, YE Zhijin, QIN Zonggeng, HUANG Yi, XIA Xiaoju
Abstract: To address the abnormal noise and vibration issues in the cab of a new energy vehicle tractor during operation,this paper conducts a systematic investigation from the vehicle level down to the component level using a hierarchical“source-path-response”troubleshooting approach.The investigation identifies the driveline system as the root cause.By implementing corresponding optimization measures,including drive-line dynamic balancing,modal frequency tuning,equivalent angle refinement,and mount isolation improvement,which mitigate the cab's abnormal noise and vibration issues.
Key words: cab abnormal noise and vibration; dynamic balance;equivalent angle; driveline modal proper-ties; mounting isolation optimization
