汽车专业英语ppt全套配套课件优化word教案参考译文5 Chapter 2.8-2.9.ppt

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1、复习提问EFI分类提问（教师说EFI系统汉语部件名称，同学回答英文名称）GDI原理学习内容本次课学习内容、目标和重点难点学习目标难点重点DieselfuelsystemsandCRsystemCooling,lubricationsystems3.Emissioncontrolsystem1.掌握柴油机喷油系统主要组成、CR系统部件的英文名称；掌握CR系统原理和排放系统控制原理2.了解冷却、润滑和排放控制系统的组成1.重点为记忆英文专业术语2.难点需要记忆的生词偏多3.汉译准确表达也是难点Chapter2InternalCombustionEngine

2、2.8DieselFuelInjectionSystemparticle['pɑ:tikl]n.微粒，颗粒clog[klɔg]v.&n.阻塞，堵塞nozzle['nɔz(ə)l]n.喷嘴trap[træp]n.圈套，陷阱，捕集器plunger['plʌnʤə]n.柱塞，活塞rack[ræk]n.齿条barrel['bær(ə)l]n.桶；v.装入桶内helix['hi:liks]n.螺旋，螺旋状物cutaway['kʌtwei]a.切去一部分的，剖面的2.8.1NewWordsandPhrasesChapter2InternalCombustionEng

3、ine2.8DieselFuelInjectionSystemvariation[veəri'ei∫ən]n.变化，变更，变种，变调solenoid['səulinɔid]n.螺线管，电磁线圈[铁，阀，开关]shutoff['ʃʌtɔ:f]n.中断，切断，关闭energize['enədʒaiz]v.供给…能量，通电，励磁Chapter2InternalCombustionEngine2.8DieselFuelInjectionSystemTypicaldieselsystemcomponentsincludethefueltank,fuelpump

4、,fuelfilter,injectionpump,injectors,andthenecessaryfuellines(Fig.2-18).ThesysteminFig.2-19istypicalofnewersystemsthatutilizeacomputer-controlledelectronicfuelinjectionpump.2.8.2TextChapter2InternalCombustionEngine2.8DieselFuelInjectionSystemFig2-18Aconventionaldieselfuelinjectio

5、nsystemChapter2InternalCombustionEngine2.8DieselFuelInjectionSystemFig2-19.Ancomputercontrolleddieselfuelinjectionsystemwithaxial-pistondistributorinjectionpumpChapter2InternalCombustionEngine2.8DieselFuelInjectionSystemFuelFilter.Dieselfuelmustbekeptcleantoavoidinjectorsystemt

6、rouble.Verysmallparticlesareenoughtocloginjectornozzles.Dieselfuelsystemstypicallyuseoneormorefilterstotrapdirtandotherdeposits.InjectionPump.Duetothehighcompression(around22:1)usedindieselengines,thedieselinjectionpumpmustbecapableofproducinghighpressures.Thereareanumberofinject

7、ionpumpdesigns.Themostcommonlyusedautomobileandlighttruckdieselinjectionpumpsareclassifiedasinlineordistributor.Theinlineinjectionpump（Figure12-18）usesaseparatecylinderplunger-camunit（Fig.2-20）foreachcylinder.Theseunitsarecontainedinastraightrowinacommonhousing.Chapter2InternalCo

8、mbustionEngine2.8DieselFuelInjectionSys