编号淮安信息职业技术学院毕业论文题目桑塔纳3000发动机电控系统故障的诊断与检修学生姓名邓仁杰学号81111210院系汽车工程系专业汽车电子技术班级811112指导教师施海凤讲师顾问教师二〇一三年十一月摘要随着电控燃油喷射技术的发展和维修认识水平的不断提高，现代轿车中在对装有电控燃油喷射发动机的汽车进行维修时，使用故障诊断仪对发动机电控单元(ECU)进行检测，并根据ECU存储的故障代码进行检修，大多数能判明故障可能发生的原因和部位，会给维修人员的工作带来很大的方便。然而，在对汽车维修时，若仅仅靠故障代码寻找故障，往往会出现判断上的失误。实际上，故障代码仅仅是ECU认可的一个是或否的界定结论，不一定是汽车真正的故障部位，因此，在对汽车进行维修时应综合分析判断，结合汽车故障的现象来寻找故障部位。本篇文章首先介绍了桑塔纳3000发动机电控系统的各个系统组成以及工作原理，接着介绍了桑塔纳3000发动机电控系统的故障现象和故障产生的机理,然后讲解了各个故障的诊断方法以及诊断过程。最后通过一个故障案例来具体的讲述故障诊断的流程。关键词：电控发动机;故障诊断;桑塔纳3000AbstractWiththedevelopmentofelectroniccontrolfuelinjectiontechnologyandrepairtheunderstandinglevelofthecontinuousimprovement,withtheelectroniccontrolfuelinjectionengineautomobilerepairinthemoderncar,unitfaultdiagnosisinstrumentforengineelectroniccontrol(ECU)weredetected,andmaintenanceaccordingtothefaultcodeECUstorage,mostcancauseandthesiteofmarshalingfailuremayoccurof,willbringgreatconveniencetotherepairwork.However,intheautomotiverepair,ifonlybythefaultcodetofindfault,oftencanappearmistakeinjudgment.Infact,thefaultcodeisonlyaECUaccreditedyesornodefinitionofconclusion,notnecessarilythefaultposition,thecarreallyso,intherepairofthecarshouldbecomprehensiveanalysis,combinedwiththeautomobilefaultphenomenontofindthefaultposition.ThisarticlefirstintroducesSantana3000enginecontrolsystemcompositionandworkingprincipleofthesystem,andthenintroducesthemechanismofSantana3000enginecontrolsystemfaultandfault.Thenexplainthediagnosismethodofeachfaultanddiagnosisprocess.Finally,afaultcasetofaultdiagnosisaboutthespecificprocess.Keywords:Electroniccontrolledengine;faultdiagnosis;Santana3000目录摘要..............................................................................................................................IABSTRACT..................................................................................................................II第一章桑塔纳3000的绪论............................................................................................11.1简介........................................................................................................................1第二章桑塔纳3000汽车发动机电控系统的组成及工作原理....................................32.1汽油机电控燃油喷射系统的组成和工作原理....................................................32.2电控点火系统的组成与工作原理........................................................................42.3电控进、排气系统的组成和作用........................................................................42.4电控辅助控制系统................................................................................................6第三章桑塔纳3000发动机电控系统的故障及产生机理............................................83.1发动机不能发动....................................................................................................83.2发动机怠速不良故障................................................................................
