常州机电职业技术学院
毕业设计(论文)
作 者: 陈瑞 学 号: 31011208 系 部: 车辆工程系
专 业: 汽车检测与维修
题 目: 汽车空调故障检测与维修
指导者:
刘勺华
陈德富
评阅者:
2013 年 5 月
毕业设计(论文)中文摘要
汽车空调系统是实现对车厢内空气进行制冷、加热、换气和空气净化的装置。它可以为乘车人员提供舒适的乘车环境,降低驾驶员的疲劳强度,提高行车安全。空调装置已成为衡量汽车功能是否齐全的标志之一。 绍了汽车空调检修的基本工具,着重对汽车空调中常见的故障现象进行了分析并对出现的故障给出了解决方案。最后结合在一汽马自达 4S店的工作实际对Mazda6轿车的空调常见故障及解决方法进行了介绍。 本文对汽车空调的发展史、汽车空调的基本原理和基本组成了进行阐述,并介关键词:汽车空调 故障检测 故障维修 原理
毕业设计(论文)中文摘要
Title:Fault detection and repair air-conditioning automobile Abstract: Automotive air conditioning system is the realization device of refrigeration, heating, ventilation and air purification of air in the carriage. It can provide a comfortable environment for passengers, reduce the driver's fatigue strength, improve the driving safety. The basic principle of the history of the development of automobile air conditioning, the automotive air conditioning and the basic composition is expounded, and introduces the basic tools maintenance of automotive air conditioning, focusing on the common faults in automobile air conditioner is analyzed and the fault is the solution. Finally, in the FAW Mazda 4S store the actual work on the Mazda6 car air conditioning common troubles and solutions are introduced. principle Keyword: automotive air conditioning, fault detect, breakdown maintenance,
目 录
1 引 言 ................................................................. 1 2汽车空调的原理与组成 ................................................... 5 2.1汽车空调的工作原理 ................................................ 5 2.2 汽车空调的组成 .................................................... 7 3汽车空调的检修 ........................................................ 17 3.1汽车空调检修的基本工具 ........................................... 17 3.2 汽车空调制冷系统检修的基本操作 ................................... 18
3.2.1制冷系统工作压力的检测 ...................................... 18 3.2.2从制冷系统内放出制冷剂具体方法 .............................. 19 3.2.3制冷剂充注程序 .............................................. 19 3.3制冷剂缺少的故障及加注 ........................................... 23
3.3.1制冷剂缺少的故障现象 ........................................ 23 3.3.2制冷剂的加注 ................................................ 24 3.4 冷冻油缺少造成的故障及加注 ....................................... 25
3.4.1冷冻油缺少造成的故障现象 .................................... 25 3.4.2冷冻油的加注 ................................................ 25 3.5压缩机故障现象及检修 ............................................. 27
3.5.1压缩机故障现象 .............................................. 27 3.5.2压缩机检修 .................................................. 28 3.6膨胀阀的故障现象及修理 ........................................... 29
3.6.1 膨胀阀的故障现象 ........................................... 29 3.6.2 膨胀阀修理 ................................................. 29 3.7 冷凝器的故障现象及检修 ........................................... 30
3.7.1冷凝器的故障现象 ............................................ 30 3.7.2冷凝器的检修 ................................................ 30 3.8 汽车空调的维护与保养 ............................................. 31
3.8.1汽车空调系统的日常保养 ...................................... 31 3.8.2汽车空调系统的定期保养 ...................................... 32
4空调故障分析与排除及维修案例 .......................................... 34 4.1空调制冷系统常见故障的分析与排除 ................................. 34
4.1.1 制冷剂泄漏 ................................................. 34
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