汽车发电机-压缩机支架断裂发生机理及控制措施  

Fracture Occurrence Mechanism and Control Measure Research of Generator and Compressor Bracket

作　　者：熊伟[1] 邓兆祥[1] 褚志刚[1] 刘剑[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400044

出　　处：《重庆大学学报（自然科学版）》2003年第2期107-109,131,共4页Journal of Chongqing University

摘　　要：针对某微型汽车在道路试验和实际使用中出现的发电机 -压缩机支架断裂并导致发电机 -压缩机 -曲轴皮带断裂而严重影响其使用寿命的现象 ,对其发电机 -压缩机支架系统进行了发动机台架振动测量和实验分析研究 ,利用频谱分析技术得到了该系统典型部位的振动信号特征 ,识别了有害振源。同时结合有限元分析技术 ,研究振动的发生、形成、传播和破坏机理。在此基础上 ,提出了行之有效的改进措施和控制方案 ,达到改善系统动态特性 ,降低振动强度 。During a minibus's practical road driving and engine test rig test for vehicle and engine reliability, the phenomenon of generator compressor bracket fracture appears and leads the generator compressor crankshaft belt rupture. It seriously affects the vehicle's operation performance. The article carries through engine test rig test and analysis, using frequency and spectrum technology to identify the bad vibration source combining FEA. It also researches vibration's occurrence, formation, propaganda and fracture mechanism. Based on this, the authors put forward countermeasure, which improves the dynamic characteristic of the system, decreases the vibration intensity and avoides the fracture of bracket and belt.

关 键 词：汽车 发电机-压缩机支架 控制措施 断裂 实验研究 共振 频谱分析 失效机理 发动机试验 台架试验 加速度 

分 类 号：U467.2[机械工程—车辆工程] U467.472[交通运输工程—载运工具运用工程]