陕西交通职业技术学院.doc

目录 1概述…………………………………………………………………………………1 1.1汽车仪表系统的作用…………………………………………………………1 1.2汽车仪表的类型………………………………………………………………1 1.3汽车仪表系统的的发展历程………………………………………2 2汽车仪表系统的结构与工作原理…………………………………………………3 2.1传统仪表的结构………………………………………………………………3 2.1.1水温表……………………………………………………………………3 2.1.2 燃油表……………………………………………………………………5 2.1.3车速里程表………………………………………………………………7 2.1.4转速表…………………………………………………………9 2.1.5仪表稳压器………………………………………………………………11 2.2电子显示仪表………………………………………………………………12 2.2.1车速表……………………………………………………………………12 2.2.2步进电动机式里程表……………………………………………………13 2.2.3转速表……………………………………………………………………13 2.2.4电子燃油表………………………………………………………………14 2.3仪表系统的显示装置………………………………………………………16 2.3.1真空荧光管(VFD) …………………………………………………………16 2.3.2发光二级管………………………………………………………………17 2.3.3显示液晶器件……………………………………………………………18 3现代汽车仪表系统………………………………………………………………20 3.1现代汽车仪表系统的整体介绍……………………………………………20 3.2现代汽车仪表系统的工作原理 ……………………………………………22 3.3现代汽车车仪表系统的电路分析 …………………………………………23 4现代汽车仪表系统的故障诊断案例分析………………………………………24 总结…………………………………………………………………………………27 致谢………………………………………………………………………………… 28 参考文献……………………………………………………………………………29 摘要 为了能够是驾驶员随时了解汽车运行时的主要状态参数，以及主要部件的工作情况，以便及时发现和排除可能出现的故障，汽车上常装有各种仪表。汽车上常用的仪表有机油压力表、水温表、燃油表、转速表、和车速里程表等。本文主要阐述了汽车仪表系统检测诊断,也介绍了各种传统仪表的结构和工作原理,又以现代汽车为主介绍仪表系统及其仪表系统故障检测的案例分析。 关键词：机油压力表 水温表 燃油表 转速表 车速里程表 Abstract In order to be able the driver to keep abreast of the state parameters when the car is running, as well as the main components of the work, in order to detect and eliminate possible failure, often equipped with a variety of instruments in the car. Commonly used instrument in the car the oil pressure gauge, water temperature, fuel gauge, tachometer and speedometer. This article focuses on the detection and diagnosis of automotive instrumentation systems, structure and working principle of a variety of traditional instruments, especially the modern car-based instrumentation system and its instrumentation system fault detection case studies. Keywords: Oil pressure gauge Water temperature gauge fuel gauge tachometer speedometer 1.概述 1.1汽车仪表系统的作用 汽车仪表（automobile