轮机英语（二三管轮）Lesson 3 Diesel Engine Construction (Fixed Parts).ppt

Unit1MainPropulsionPlantLesson3DieselEngineConstruction(FixedParts)3.1TheBedplate3.2TheFrame3.3TheCylinderNewWordsandExpressionsgear[g??(r)]n.装置，机构bedplate[bedple?t]n.机座，底座frame[fre?m]n.机架，框架crosshead[kr?shed]n.十字头navigation[?n?v??ge??n]n.航行weld[weld]v.焊接bolt[b??lt]n.螺栓secure[s??kj??(r)]v.固定NewWordsandExpressionstransverse[?tr?nzv?:s;?tr?nsv??s]a.横向的longitudinal[?l??g??tju:d?nl;?l?nd???tju?d?nl]a.纵向的chock[t??k]n.侧块，楔型块girder[?g?:d?(r)]n.梁shell[?el]n.轴瓦lined[la?nd]a.内衬的stud[st?d]n.双头螺栓nut[n?t]n.螺母NewWordsandExpressionshydraulic[ha??dr?:l?k]a.液压的column[?k?l?m]n.机架crankcase[kr??kke?s]n.曲柄箱，曲轴箱camshaft[?k?m?ɑ:ft]n.凸轮轴deformation[?di?f???me??n]n.变形vibration[va??bre??n]n.振动lubrication[?lu?br??ke??n]n.润滑（油）oblique[??bli:k]a.斜的NewWordsandExpressionsdeposit[d??p?z?t]n.堆积物，沉淀物topland[?t?pl?nd]n.顶岸fitting[?fiti?]n.附件cylindercover气缸盖connectingrod连杆mainbearingcap主轴承盖reliefvalve安全阀，溢流阀staybolt贯穿螺栓，拉杆螺栓NewWordsandExpressionsstuffingbox填料函cylinderliner气缸套scavengeairreceiver扫气箱coolingjacket冷却水套indicatorcock示功阀Theconstructionofmarinedieselengineiscomplex.Althoughthestructuresandmodelsofvariousdieselenginesaredifferent,thedieselengineismainlycomposedofthesamecomponentsandsystemsintermsofworkingprincipleandoverallstructure.(尽管柴油机的结构、型号各异，但从工作原理和总体结构上看柴油机基本都由相同的部件和系统组成)Themaincomponentsofdieselenginecanbedividedintofixedpartsandmovingparts(alsoknownasrunninggear).Thefixedpartsmainlyincludebedplate,frame,cylinderandcylindercover,whilethemovingpartsarepiston,crosshead(onlyintwo-strokeengine),connectingrodandcrankshaft(seeFig.3-1).Thesecomponentsconstitutethemainbodyofthedieselengine,theirworknotonlydirectlyaffectsthetechnicalperformanceofthedieselengine,but