一汽大众宝来轿车空调系统

毕业设计(论文)

常州机电职业技术学院

毕业设计（论文）

作 者： 姜文 学 号： 31021238 系 部： 汽车工程系 专 业： 汽车电子技术 题 目： 一汽大众宝来轿车空调系统

故障诊断与排除

指导者：

岳兴莲

许俊

评阅者：

2013年 4 月

1

毕业设计（论文）中文摘要

近几年来，随着我国经济的持续发展，汽车的需求量继续保持高速的增长。并随着电子技术的发展，越来越多的汽车上采用了电子控制的自动空调。 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。它可以为乘客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。 本论文就是以一汽大众宝来轿车空调系统作为研究对象，从结构、工作原理、以及故障的分析和排除等方面，结合故障案例，分析数据，了解此类空调系统故障的发生、检测、解除的过程。 关键词：空调系统 故障诊断 检修 I

毕业设计（论文）外文摘要

Title： Faw Volkswagen bora car air conditioning system fault diagnosis and ruled out

Abstract： In recent years, as the economy continues to develop, auto demand continues to maintain high-speed growth. And with the development of electronic technology, more and more cars used electronic control automatic air conditioning. Automotive air conditioning system is to achieve the compartments for refrigeration and air heating, ventilation and air purification devices. It can provide comfort for passengers environment, reduces the bus driver fatigue strength, improve the driving safety. Air-conditioning unit has become a measure of whether the car function complete one sign. This thesis is to faw Volkswagen bora car air conditioning system as an experiment design object, from its tectonic structure, working principle, and the breakdown analysis and elimination of, connecting with the practice, analysis of data, understand such air conditioning system of failure, testing, termination process. Keywords ：air conditioning system fault diagnose exclude II

目录

1引言 ................................................................ 1 2汽车空调系统 ........................................................ 2

2.1汽车空调的组成及各组成部分的功用............................... 2

2.1.1压缩机 ................................................... 2 2.1.2膨胀阀 ................................................... 3 2.1.3 节流管................................................... 3 2.1.4 储液干燥器............................................... 3 2.1.5 集液器................................................... 3 2.1.6 冷凝器................................................... 4 2.1.7控制系统 ................................................. 4 2.2汽车空调分类................................................... 5

2.2.1按空调制冷系统压缩机机驱动方式分 ......................... 5 2.2.2按空调系统的构成形式分 ................................... 6 2.2.3按空调系统的调节方式分 ................................... 6 2.3汽车空调制冷循环工作过程....................................... 6 3宝来轿车自动空调 .................................................... 8

3.1自动空调的概念................................................. 8 3.2自动空调的组成................................................. 8 3.3自动空调的分类................................................. 8 3.4自动空调电气控制装置........................................... 8 3.5自动空调的工作原理 ................................................ 9 4一汽大众宝来轿车空调电路分析 ....................................... 10

4.1空调电磁离合器电路............................................ 10 4.2散热器风扇电动机电路.......................................... 11 4.3鼓风机电路.................................................... 11 5汽车空调系统基本诊断检测 ........................................... 13

5.1基本判断...................................................... 13 5.2 压力表组检测 ................................................. 13 5.3 常见故障的诊断 ............................................... 13

5.3.1 系统不制冷.............................................. 14 5.3.2 系统制冷不足............................................ 14

6 宝来汽车空调系统的检测............................................. 16

6.1 空调系统的检漏 ............................................... 16

6.1.1 空调系统的压力检测...................................... 17 6.1.2 制冷剂排空.............................................. 18 6.2 压缩机的检修 ................................................. 18

6.2.1 压缩机的拆卸............................................ 18 6.2.2 电磁离合器的检修........................................ 19

7 宝来空调使用注意事项............................................... 20

III

8 宝来汽车空调的日常保养............................................. 21 结论................................................................. 23 致谢................................................................. 23 参考文献............................................................. 23

IV

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