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《汽车专业英语 教学课件 作者 幺居标 Model Five Auto Engine Testing.ppt》由会员上传分享，免费在线阅读，更多相关内容在应用文档-天天文库。
1、ModelFiveAutoEngineTestingWarm-upSuggestions（建议）1.Letthestudentstrytoknowtheenginetestingtools.（让学生认识发动机测试工具）2.TrytospeakouttheChineseversionoftheenginetestingtools.（说出发动机测试工具的中文名称）Picturesofenginetestingtools.Fig.II-7TheirChinesenames1.全车系燃油压力表2.喷射燃油压力实验器（双表头）3.发动机燃油表4.真空压力表5.燃油
2、喷射压力表6.多用途汽缸压力表7.汽缸测漏仪表组8.机油压力表Passagelearning（课文学习）PossibleEngineCauses可能出现的发动机故障Theenginewillnotidlesmoothly,oritstallsduringidlewhentheengineiscold:whentheengineiscoldandyoutakeyourfootoffthegaspedal,theenginerunsveryroughandmayevenstall.Whenyouruntheengineathigherspeed,itseem
3、storunfine.Possiblecausesandthewaysofsolvingthem:1.Ifyouhaveacarburetor,youmayhaveabadacceleratorpumporpowercircuit,youshouldreplaceacceleratorpumporreplacecarburetor.2.Theremaybeavacuumleak,youshouldcheckandreplacevacuumlinesasrequired.3.Theremaybesometypeofignitionproblem,pleas
4、echeckandreplacedistributorcap,rotor,ignitionwiresandsparkplugs.4.Theignitiontimingmaybesetwrong,pleaseadjustignitiontiming.5.Theremaybeafaultinthecomputerizedenginecontrolsystem,pleasecheckenginecontrolsystemswithascantool.Testcircuitsandrepairorreplacecomponentsasrequired.6.The
5、enginemayhavemechanicalproblems,checkcompressiontodetermineenginecondition.7.Idlespeedmayappearincorrectly,setidlespeedtospaces.8.Thefuelinjectorsmaybedirty,cleanorreplacefuelinjectors.Newwordsandexpressions（生词和词组）idlev.怠速运转roughadv.粗糙地gaspedaln.油门stallv.因动力不足停转carburetorn.化油器acc
6、eleratorpumpn.加油泵vacuumleakn.真空泄露ignitionn.点燃injectorn.注射器rotorn.转子scanv.扫描mechanicaladj.机械的replacev.替换componentn.成分，部分distributorcapn.分电器盖compressionn.压缩determinev.决定adjustv.调节atspeed高速地ReadingComprehension（补充阅读）BeginwithanAreaTest从区域检测开始Theareatestgivesyouthebroadestandquickest
7、overviewandassessmentofthesysteminquestion.Youmaychooseatestthatisbasedonasymptomorasuspectedfault.Thisgivesyouthemostgeneralideaofstartingpoints.Thepurposeistoisolateonesystemfromanother.Forexample,inthecaseofano-startcomplaint,youneedtodetermineiftheproblemismechanical,electric
8、al,ignition,orrelated.Byperforminganarea
