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某某纺织高等专科学校机械工程与自动化系
毕业设计
题目名称：汽车发动机局部故障与分析
班级：层次：□本科 □专科
学生学lum; braking deviation, long braking distance and braking.
The car used in the sudden appearance of some abnormal phenomena, should be amenable to prevention: running the engine cut out;when in need of brkeof automobile brake; winter car won't start; engine flameout won't start; running sudden steering malfunction; what is more a vehicle tyre and auto spontaneous bustion. Symptoms obviously, causes more plex, mainly automotive internal fault without being noticed, develop into sudden damage.
Automobile use, failure, often the most easily to the abnormal noise of forms. Under normal circumstances, the driver and passengers can be heard. Have the experience can be based on different sound occurring position and the sounds of different frequencies and timbre judgment fault, general sound rather boring and acpanied by a strong chattering when fault is more serious, it should stop, reduce the engine speed or stop the engine to find, some sounds are certain parts of a fault occurs, the vehicle is not influenced, temporarily do not check out, the car back to the base or the nearest into the Department of vehicle maintenance and repair please experienced staff search.
This article from the automobile starting system, ignition system, fuel injection system, analyzes the fault reason and elimination method.
Keywords: performance, operating conditions, different sound
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目录
目录3
第1章前言1
第2章启动系统故障与分析2
启动系统的的概述2
接通起动开关，起动机不转故障2
起动机运转无力故障3
起动机空转故障3
起动机转动时有撞击声故障4
维修案例5
第3章燃油喷射系统故障与分析7
燃油喷射系统概述7
检测诊断与维修电控汽油喷射系统须知事项7
根本的诊断方法8
电子控制燃油喷射系统的常见故障8
几种最常见故障的诊断程序9
电控系统的故障诊断与检修10
电喷车启动困难分析11
维修案例13
第4章冷却系统故障与分析21
发动机冷却系统概述21
水温过高21
冷却液泄漏22
冷却液消耗异常22
发动机过热23
发动机工作温度过低23
维修案例23
发动机冷却系案例分析23
第5章润滑系统故障与分析25
润滑系统