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TRAININGACADEMYTheNewGenerationofV-Engines6and8-cylinderDirectInjectionM276/M278fromMercedes-BenzTRAININGACADEMY209/1001/1103/1104/1120142010201120122013200901/11BR216BR221AusblickBR222BR218BR218Outlook–FirstLaunchM278M27601/11BR20403/11BR172BR221TRAININGACADEMY•High-powerenginessuccessfullycombiningexclusiveperformanceanddemandingfuelconsumptiongoals高功率发动机成功结合了独特的性能和苛求的燃油目标•ECOstart/stopfunctionwithstarter-assisteddirectstartincombinationwiththe7-speedautomatictransmissionECO启动/停止功能结合7档变速箱在启动辅助下直接启动•Improvedcomfortintermsofacousticsandvibrations提高声学和振动方面的舒适性•Compliancewiththecurrentlyapplicableexhaustemissionslegislationwithpotentialforfutureconformity符合当前适用的废气排放法规标准，也是符合未来的发展•Modularconceptforintegrationofforcedinductionsystemsandhybridization,andforcompatibilitywithfuelswithanethanolcontentofupto25%,andasanadd-onmoduleforanethanolcontentofupto85%压力感应系统和混合系统集成的模块化概念，并与使用乙醇含量燃料的兼容性高达25%，并作为一个附加模块时乙醇含量最高达85%3ThespecialfeaturesofthenewV-enginesataglance:一目了然的新V型发动机特征TRAININGACADEMY4ThespecialfeaturesofthenewV-enginesataglance:一目了然的新V型发动机特殊特点•Fullaluminumcrankcase全铝质曲轴箱•Gasolinedirectinjectionwiththelatestgenerationofpiezoinjectorsandjet-guidedcombustion燃油直接喷射的最新一代压电晶体喷油嘴和引导喷射燃烧•Advancedcamshaftadjustersforoptimizedenginetiming高级优化的正时凸轮轴调节器•Advancedcontrolandoptimizationoftheoilandcoolingcircuits先进控制和优化的机油和冷却回路TRAININGACADEMY5NewTechnologyintheV-EnginesGenerationM278DELA46V890°M276DE35V660°Upto12%morepower提高功率12%Upto32%moretorque提高扭矩32%About20%lessfuelconsumption节油20%TRAININGACADEMY6Enginedatacomparisonwithpredecessor与上一代发动机数据对比TRAININGACADEMY7PerformancecomparisonM276&M272TRAININGACADEMY8PerformancecomparisonM278&M273TRAININGACADEMY9FuelconsumptionandexhaustemissioncomparisonwithM272DEandM276DE9876549,16,8217159220200180160140120-25%-26%CLS350CGIwithM272DE35CLS350withM276DE35CLS350CGIwithM272DE35CLS350withM276DE35ConsumptioninNEDC[l/100km]CO2Emission[g/km]TRAININGACADEMY10M276DE35V660°DesignstructureoftheNewV-EnginesM276新V型M276设计机构EngineM276Features:•V6/60°cylinderangleV6/60°气缸夹角•Balanceshaftomitted省略平衡轴•Increasedpowerandtorque增加功率和扭矩•Extendedleanburn(stratifiedcombustion)稀薄燃烧（分层燃烧）•Newcombustionsystemoperatingmodes新的燃烧系统运行模式•Resonanceintakemanifold谐振进气歧管•Multi-sparkignition(MSI)多火花点火功能•Homogeneousandstratifiedcombustion均匀混合和分层燃烧Thenew6-cylinderengineisavailableintwoOperatingvariants:新6缸发动机带2种运行模式•HomogeneouscombustionM276DEH(USA)均匀混合模式燃烧M276DEH(USA)•StratifiedcombustionM276DES(ECE)分层进气模式燃烧M276DES(ECE)TRAININGACADEMY11TRAININGACADEMY12ResonanceIntakeManifoldinM276M276谐振进气歧管•Theairductingandthelengthoftheintaketractshaschangedduetotheintakemanifoldswitchoverfunctionwithselectordrumandthetworesonanceflaps.由于进气歧管的控制筒和两个谐振风门的切换使空气管道和进气管道的长度发生改变•Inaddition,therightandleftsidesoftheintakemanifoldareconnectedwitheachotherviaaresonancechamber.另外，左右两侧的进气歧管通过一个共振腔彼此相连•Thesemeasuresservetooptimizetheenginetorquecurvebywhatisknownasinternalcharging.Thisutilizesthekineticenergyoftheairmovingintheintaketractandoftheoscillationsoftheaircolumn.这些措施有助于优化发动机的扭矩曲线，所以称为“内部增压”。就是利用进气道的空气柱来回振荡移动提高空气的动能。TRAININGACADEMY13Torquepositioninlowrpmrange低转速范围的扭矩Lowrpmrange:低转速范围：•Engineload50%发动机负载50%•Enginespeed3200rpm发动机转速3200rpm•Resonanceflapsclosed谐振风门关闭•Selectordrumclosed控制筒关闭TRAININGACADEMY14Torquepositioninmediumrpmrange中等转速范围的扭矩Mediumrpmrange:中等转速范围：•Engineload50%发动机负载50%•Enginespeed3200rpmto4250rpm发动机转速3200rpm—4250rpm•Resonanceflapsopen谐振风门打开•Selectordrumclosed控制筒关闭TRAININGACADEMY15Powerpositioninhighrpmrange高转速范围的扭矩Highrpmrange:高转速范围：•Engineload50%发动机负载50%•Enginespeed4250rpm发动机转速4250rpm•Resonanceflapsopen谐振风门打开•Selectordrumopen控制筒打开TRAININGACADEMY16MultiSparkIgnition(MSI)多火花点火•Severalsparksareusedinmulti-sparkoperation.Ratherthanproducingasuccessionofsparksbythesinglesparkmethod,thecoilisrechargedinthemeantimeinordertoprovidesufficientenergyformoresparks.数个火花是用于多火花点火功能。而不是产生一个接一个的单一火花的方法，在此期间线圈被充电是为了提供足够的能量，以获得更多的火花。•Inmulti-sparkignitionmodeitispossibletodrivewithamuchleanermixturewithstratifiedcombustion.Theadvantageofthisislowerfuelconsumption.在多火花点火模式中，它用于分层燃烧中一个更稀薄的混合气。优点是能降低燃油的消耗TRAININGACADEMY17M276DE35:MultiSparkIgnitionTRAININGACADEMY18M276DE35:MultiSparkIgnition-4-3-2-10123-0,400,000,400,801,201,602,00Zeit[ms]Is[mA*10]Ip[A/10]Us[kV]TRAININGACADEMY19Sparkplug•Sparkplugmustbetightenaccordingtothespecifiedtorqueasthetipofthegroundelectrodewillbefacingtotheinjector.火花塞必须按照固定的扭矩紧固，为了让火花塞接地电极一侧朝向喷油嘴TRAININGACADEMY20M278DELA46V890°DesignstructureoftheNewV-EnginesM278新V型M278设计结构M278ComparedwiththepredecessorengineM273KE55,thedisplacementhasbeenreducedto4.6liters.Nevertheless,thankstotheuseofoneturbochargerforeachcylinderbank,ithasbeenpossibletosignificantlyincreasetheenginepowerandtorque.对比上一代M273KE55发动机，排量已由原来的降低到4.6L。不过，由于使用双涡轮增压器，显著提高了发动机的功率和扭矩Features:•V8/90°cylinderangleV8/90°气缸夹角•Biturbochargingwithchargeaircooling双涡轮增压器带增压空气冷却TRAININGACADEMY21TurbocharginginM278•EngineM278isturbocharged.Eachofthetwocylinderbanksissuppliedbyoneturbochargerwithwastegatecontrol.M278发动机双涡轮增压而且每个涡轮增压器都带一个排气泄压阀•Acompactchargeairc