┊┊┊┊┊┊┊┊┊┊┊┊┊装┊┊┊┊┊订┊┊┊┊┊线┊┊┊┊┊┊┊┊┊┊┊┊┊毕业设计（论文）报告纸PAGEIV摘要本文从发动机的基础知识入手，以我们最常见的、应用较广泛的电控燃油喷射系统为例，较系统地介绍了汽油电控燃油喷射技术的发展历程，汽油电控燃油喷射系统的类型、结构组成、工作原理，较详细地介绍了帕萨特B5轿车电控燃油喷射系统组成与工作原理，描述了帕萨特B5轿车的故障诊断与分析。文章内容具有较强的针对性与实用性，电子控制燃油喷射装置是在电子控制单元的自动控制下，通过电控喷油器将发动机所需要的燃油成雾状地喷射到汽油发动机的进气歧管内或气缸内，然后与空气混合形成可燃混合气。电子控制燃油喷射系统与传统化油器燃油供给系统相比，由于原理上全然不同，因而结构上也面目全非。所以在分析故障和进行维修时，与常规方法有很大的不同。可作为汽车维修入门的参考资料。关键词：电控燃油喷射系统结构工作原理故障诊断与分析AbstractThisarticlefromthebasicknowledgeoftheengine,toourmostcommon,applicationwidespreadelectronic-controlfuelinjectionsystemasanexample,thearticlesystematicallyintroducesgasolineelectronic-controlfuelinjectiontechnologydevelopmenthistory,gasolineelectronic-controlfuelinjectionsystemtypes,structure,workingprinciple,aparticularedintroductionpassatB5carelectronic-controlfuelinjectionsystemcompositionandworkingprinciple,describesthepassatB5carfaultdiagnosisandanalysis,thearticlecontentwithstrongpertinenceandpracticability,theelectroniccontrolfuelinjectiondeviceisinelectroniccontrolunitundercontrol,automaticcontrolbytheengineinjectorneededfuelintomistshapetojettogasolineengineintakemanifoldorinsidecylinders,thenmixedwithairmixtureformation.Theelectroniccontrolfuelinjectionsystemandthetraditionalcarburetorfuelsupplyingsystem,becausecomparedtheprinciple,andthedifferentstructuralulterlychangedalso.Soinfailureanalysisandmaintenance,andconventionalmethodsarequitedifferent.Canbeusedasautomobilemaintenanceintroductoryreferencematerial.Keywords：ElectronicFuelInjectionSystem;Structure;WorkingPrinciple;FaultDiagnosisandAnalysis目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc294603899"第1章绪论PAGEREF_Toc294603899\h1HYPERLINK\l"_Toc294603900"1.1电控汽油喷射系统的发展历程PAGEREF_Toc294603900\h1HYPERLINK\l"_Toc294603903"1.2电控燃油喷射技术的现状PAGEREF_Toc294603903\h2HYPERLINK\l"_Toc294603904"1.3电控燃油喷射技术发展趋势PAGEREF_Toc294603904\h3HYPERLINK\l"_Toc294603905"1.3.1燃油供给系PAGEREF_Toc294603905\h3HYPERLINK\l"_Toc294603906"