《轮机英语轮机长大管轮》_Lesson 15 Electronically Controlled Engine.pptVIP

NewWordsandExpressionsprinciple[?prins?pl]n.原则，原理，法则propulsion[pr??p?l??n]n.推进denote[di?n?ut]vt.指示，表示，意指employ[im?pl?i]vt.雇用，使用，利用Fundamentally[,f?nd?m?nt?li]adv.根本地，基础地Microprocessor[,ma?kropros?s?]n.微处理器Duplicate[dj?pl?,ket]v./adj.双联Sheathed[?i:θt]adj.覆盖的NewWordsandExpressionsLobed[lobd]adj.有叶的，分裂的Adjacent[?d?esnt]adj.邻近的，毗连的Analogue[?n?l?:g]adj.模拟计算机的Incorporated[?nk?rp?ret?d]adj.合并的Facilitate[f?s?l?tet]vt.促进，帮助，使容易Overhaul[ov?h?l]vt./n.分解，拆检，大修TheElectronicallyControlledEngine,sometimesmayalsocalledTheIntelligentEngineorTheCamshaftlessEngine,asallthreehavebeenappliedtothenewergenerationoflowspeedmarinedieselengines.Apartfromthefuel,exhaustvalveandairstartingsystem,theW?rtsil?andMANDieselTurbo(MDT)electronicallycontrolledenginesarethesameasthepreviouscamshaftengines,usingthesamedesignofcylinders,crankshaft,bearings,etc.Aswidethecamshaftengines,theelectronicenginesareofferedinrangeswithdifferentcylinderboresandpistonstrokesaswellaswithdifferentnumbersofcylinders(抛开燃油、排气阀、启动空气系统来讲，瓦锡兰和曼恩公司的电喷柴油机与其传统带凸轮轴的机型使用了相同的气缸套、曲轴、轴承等。与有凸轮轴发动机一样，电喷机也可以有不同缸径、活塞行程、缸数的机器).TheW?rtsil?RT-flexandMDTMEenginedesignsoffersimilarapproachestotheelectroniccontrolofstartingairandalsototheelectroniccontrolandhydraulicoperationoftheexhaustvalves.ThewayinwhichfuelinjectionoperatesisfundamentallydifferentasMEmaintainsajerkpumpapproachwhilstRT-flexhasadoptedacommonrailfuelsystem(ME型柴油机和RT-Flex柴油机的根本不同在于ME柴油机保留了高压燃油喷射泵而RT-flex柴油机则使用了共轨系统).RT-flexengineFig.1DifferencesbetweenRTAandRT-flexenginesRatherthanelectronicallycontrolled,itwouldbemoreaccuratetodescribeRT-flexenginesasbeingcomputercontrolled.ThisisbecauseintheRT-flexsystem,enginefunctionsarefullyprogrammable,perhapslimitedonlybythedesignersimaginationandthelawsofnature.RT-flexeng