电控发动机故障诊断与分析VIP免费

/毕业设计(论文)常州机电职业技术学院毕业设计（论文）作者：陈奇学号：31011209系部：车辆工程系专业：汽车检测与维修题目：电控发动机故障诊断与分析指导者：刘勺华向轻松评阅者：2013年5月毕业设计（论文）中文摘要汽车电控发动机是电子技术与汽车技术的完美结合，电控技术能够提高发动机的动力性、燃油经济性、加速性能和起动性能。所以，对于电控系统的结构认识和故障诊断就显得十分重要。本文首先是对电控系统的组成（信号输入装置、电子控制单元和执行元件）进行总体论述，接下来由于应用在发动机上的子控制系统尤以电控燃油喷射新系统较为复杂难懂，所以本文对其结构和工作原理进行了详尽阐述；还有对其辅助控制系统（怠速控制系统、排放控制系统和故障自诊断系统）也加以补充；最后是对汽车电控发动机控制系统故障诊断与方法分析。关键词：电控发动机控制系统故障分析与检测毕业设计（论文）外文摘要Title：FaultdiagnosisandanalysisofelectroniccontrolengineAbstract：Autoelectroniccontrolengineisthecombinationofelectronictechnologyandvehicletechnologyperfect,electroniccontroltechnologycanimprovetheenginepower,fueleconomy,accelerationperformanceandthestartingperformance.So,itisveryimportantforunderstandingstructureandfaultdiagnosisofelectroniccontrolsystem.Thispaperiscomposedofelectroniccontrolsystem(signalinputdevice,electroniccontrolunitandactuator)tothegeneraldiscussion,thentheapplicationintheengineelectroniccontrolsystem,especiallyintheelectronicfuelinjectionsystemismorecomplicated,sothispaperelaboratesonthestructureandtheworkingprincipleandcontrolsystemoftheauxiliary;(idlespeedcontrolsystem,emissioncontrolsystemandfaultdiagnosissystem)hastobeadded;thelastisthemostpracticalmethodistocontroltheenginefaultdiagnosisandanalysissystemofautomotiveelectroniccontrol,column.Keywords:electroniccontrolenginecontrolsystemfaultanalysisanddiagnosis目录1绪论...........................................................................................................................11.1电控发动机技术概述......................................................................................11.2发动机电控系统简介.....................................................................................31.3应用在发动机上的电子控制系统..................................................................32电控发动机系统组成.................................................................................................62.1信号输入装置..................................................................................................62.2电子控制单元..................................................................................................72.3执行元件..........................................................................................................83汽油机电控燃油喷射系统.......................................................................................103.1电控燃油喷射系统概述................................................................................103.2电控燃油喷射系统的功能............................................................................143.3电控燃油喷射系统的组成与基本原理........................................................184电控发动机辅助控制系统......................................................................................204.1怠速控制系统................................................................................................204.2排放控制系统..................................................................