《凌志ls400电控空气悬架系统故障分析与检测》-毕业论文.docVIP

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 Author:xxx 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. K