钟山职业技术学院毕业论文
摘要:本文是对四轮定位的概念，基本参数，原理进行了系统深入的介绍，对四
轮定位仪的检测原理、方法进行了详细的概括。还对四轮定位调整技术和四轮定位仪的故障维修进行了诠释。主要内容有四轮定位的基本原理，四轮定位的调整技术。
关键词：四轮定位 四轮定位仪 定位参数 调整技术
Abstract: This paper is the concept of four-wheel positioning, basic
parameters, principles, conducted a systematic in-depth introduction to the four-wheel positioning system testing principles and methods outlined in detail. Are also four position adjustment techniques, and 4 locators interpretation of the failure of the repairs. The main content of the basic principles of four wheel alignment, four-wheel positioning adjustment techniques.
Keywords：four wheel alignment four-wheel alignment instruments
Location parameter adjustment techniques
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钟山职业技术学院毕业论文
目录
绪论 ·············································································································· 4 第一章 四轮定位的概念 ················································································ 5
1.1 什么是四轮定位 ················································································· 5 1.2 为什么要进行四轮定位 ······································································· 5 1.3 四轮定位服务的种类 ·········································································· 5 1.4 四轮定位维修的好处 ·········································································· 6 1.5 什么情况下需要四轮定位检测 ···························································· 6 1.6 四轮定位的参数 ················································································ 7 1.7 四轮定位系统组成 ············································································· 7 一、地沟式 ···································································································· 7 二、举升器式 ································································································· 8 第二章 四轮定位的基本原理 ········································································· 9
2.1车轮外倾角 ························································································ 9 2.2主销后倾角 ······················································································ 10 2.3主销内倾角 ······················································································ 10 2.4前束及前束角 ··················································································· 11 2.5后轮推进角 ······················································································ 11 2.6摩擦弧径 ·························································································· 13 2.7转向半径 ·························································································· 14 2.8车轴偏角 ·························································································· 14 2.9悬吊高度 ·························································································· 15 第三章 四轮定位参数的作用和影响 ····························································· 16
3.1四轮定位参数的作用 ········································································ 16
3.1.1车轮外倾角 ············································································· 16 3.1.2主销内倾角 ············································································· 16 3.1.3主销后倾角 ············································································· 16 3.1.4前束 ······················································································· 17 3.2四轮定位对汽车行驶性能的影响 ······················································· 17
3.2.1车轮外倾角的影响 ··································································· 17 3.2.2主销后倾角的影响 ··································································· 18 3.2.3主销内倾角的影响 ··································································· 18 3.2.4前束的影响 ············································································· 18 3.2.5后轮前束的影响 ······································································ 19
第四章 四轮定位仪 ····················································································· 20
4.1四轮定位仪的检测原理 ····································································· 20
4.1.1直接测量项目 ·········································································· 22 4.1.2间接测量项目 ·········································································· 23 4.2四轮定位仪的使用和维修 ································································· 23
4.2.1目前四轮定位仪使用中存在的误区 ··········································· 23 4.2.2四轮定位仪的使用注意事项 ····················································· 24 4.2.3四轮定位仪常见故障及解决办法 ·············································· 26 4.3四轮定位仪发展趋势 ········································································ 27
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钟山职业技术学院毕业论文
4.3.1我国四轮定位仪行业的发展现状 ·············································· 27 4.3.2国外的四轮定位状况 ······························································· 28 4.3.3中国四轮定位仪产品品牌竞争趋势 ··········································· 28 4.4四轮定位仪的选购 ············································································ 29
4.4.1性能价格比 ············································································· 29 4.4.2售后服务 ················································································ 30
第五章 四轮定位的调整 ·············································································· 32
5.1影响四轮定位的因素和检测方法 ······················································· 32 5.2四轮定位异常所引发的故障症状 ······················································· 33
5.2.1车辆跑偏 ················································································ 33 5.2.2轮胎的磨损 ············································································· 35 5.2.3车辆发飘 ················································································ 35 5.2.4转向盘发沉 ············································································· 35 5.2.5转向盘回正能量差 ··································································· 35 5.2.6遇到轻微颠簸或加速时车辆甩尾 ·············································· 36 5.3四轮定位调整的正规操作步骤··························································· 36 5.4四轮定位调整技术研究 ····································································· 37 5.5四轮定位调整技术的开发与拓展 ······················································· 38 第六章 四轮定位检测技术发展状况和车轮定位发展趋势 ······························ 40
6.1四轮定位检测技术发展概况 ······························································ 40 6.2车轮定位发展趋势 ············································································ 42
6.2.1实行后轮定位 ·········································································· 42 6.2.2减小车轮外倾角和前束 ···························································· 42 6.2.3增大主销内倾角 ······································································ 42 6.2.4减小主销后倾角 ······································································ 43
致谢 ············································································································ 44 参考文献 ····································································································· 45
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