汽車常見發(fā)動機(jī)故障診段分析-展示頁
2025-07-04 13:41本頁面
【正文】 ronic control system maintenance.In the engine control system overview introduces respectively the electronic ignition device ( ESA ), electronic fuel injection system ( EFI ), exhaust gas recirculation control ( EGR ), idle speed control ( ISC ), valve timing control, the two air injection, oil gas evaporation control, discusses its position, working principle and effect. Basic knowledge in fault diagnosis in sectionIn the fifth chapter introduces the engine electronic control system maintenance, discussed the system maintenance method, steps, and the matters needing attention, and attaching the flow diagrams and tables. In the final chapter describes the electronic control system mon fault diagnosis and maintenance, lists some mon repair case, discusses the fault phenomenon, possible causes and troubleshooting methods.Modern automotive electronic control system characteristics, mainly reflected in the function of intensive, control electronics and connection standard, in the analysis of control system failure, you must know the electrical, electric equipment structure, function and characteristics of the electronic control system, the position, function and working principle, and a variety of mon breakdown phenomenon, reason and eliminating methods.Key words: engine electronic control system, position working principle fault maintenance目錄1 緒論 ........................................................................1 研究現(xiàn)狀 ................................................................1 研究內(nèi)容 ................................................................1 研究意義 ................................................................12 汽車發(fā)動機(jī)電控系統(tǒng)概述 ......................................................2 汽車發(fā)動機(jī)電控系統(tǒng)的組成 ................................................2 電控點火系統(tǒng)（ESA） .................................................3 電子燃油噴射系統(tǒng)（EFI） .............................................3 廢氣再循環(huán)控制（EGR） ...............................................3 怠速控制（ISC） .....................................................4 燃油蒸發(fā)控制系統(tǒng)（EVAP） ............................................4 可變氣門正時和升程電子控制技術(shù)（VTEC） ..............................4 系統(tǒng)自診斷 ..........................................................4 汽車發(fā)動機(jī)電控系統(tǒng)中的傳感器 ............................................5 溫度傳感器 ..........................................................5 壓力傳感器 ..........................................................5 節(jié)氣門位置傳感器 ....................................................5 氧傳感器 ............................................................6 空氣流量傳感器 ......................................................6 爆震傳感器 ..........................................................73 發(fā)動機(jī)電子設(shè)備的故障診斷 ....................................................8 電路故障的診斷及檢修要點 ................................................8 測量點的選擇 ........................................................8 電路故障的檢修要點 ..................................................84 發(fā)動機(jī)電控系統(tǒng)常見故障的檢修 ................................................9 不能起動或起動困難故障的檢修 ............................................9 怠速不穩(wěn)、易熄火故障的檢修 ............................................11 怠速過高 ...........................................................12 怠速過低 ...........................................................13 怠速運(yùn)轉(zhuǎn)不平穩(wěn) .....................................................14 發(fā)動機(jī)怠速不穩(wěn)、易熄火故障診斷與排除案例 ...........................15 動力不足、加速不良故障的檢修 .......................................15結(jié)論 ........
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