凌志LS400电控空气悬架系统的故障分析与检测毕业正文(可编辑).doc

毕业论文 凌志ls400电控空气悬架系统故障分析与检测 摘要 电子技术与汽车技术的结合行成了一门新技术汽车电子技术悬架的好坏直接对汽车的整体性能有着重要的影响而电控悬架是一种能根据不同车速不路况和不同的行驶状态及时调整悬架装置的刚度和阻尼力等等它是由电脑控制主动式智能化的特殊悬架丰田凌志LS400空气悬架重要组成部分由可调刚度和阻尼力的悬架系统而整套系统由5个车身基本传感器以及模式选择开关高度控制器空气弹簧控制单元ECU组成然而在使用过程中常常出现悬架模式开关不起作用气源空压机不能正常工作悬架刚度和阻尼力不能正常调整等故障本文以丰田凌志LS400轿车为研究对象阐述丰田凌志LS400轿车悬架结构和工作原理对常见故障进行分析与检测并结合凌志LS400悬架维修资料对常见的故障进行检测与排除通过从机械入手再从电控方面最后从液体方面查结合案例分析总结出对丰田凌志LS400空气悬架故障的排除方法和技巧 关键词 悬架系统传感器执行器检测故障分析 The Lexus LS400 electronic control air suspension system fault analysis and detection Abstract Authorxxx Tutor He Da-song Electronic technology and automotive technology combined to become a new technology -- the automobile electronic technology Suspension directly on the cars overall performance is of important influence The suspension is a kind of according to the different vehicle speed traffic and not different driving state timely adjustment of suspension stiffness and damping force and so on It is controlled by the computer active intelligent special suspension Toyota Lexus LS400 air suspension is an important part of an adjustable stiffness and damping force of the suspension system and the whole system is composed of 5 basic body sensor and a mode selection switch a height controller air spring the control unit ECU However in the use of often occurred during suspension mode switch inoperative air compressor does not work suspension stiffness and damping force can not be normal adjustment fault Based on the Toyota Lexus LS400 sedan as the research object the Toyota Lexus LS400 sedan suspension structure and working principle the common fault analysis and detection and combined with the Lexus LS400 suspension repair information to the common fault detection and exclusion from proceed with from the aspects of mechanical electronic and finally the liquid from the check combined with case analysis and summary on the Toyota Lexus LS400 air suspension troubleshooting method and skill Keywords Suspension system sensor