第十四章-第三节MAN-B&W电控型柴油机控制系统

第十四章船用电控柴油机智能控制系统第三节MANB&WME电控型柴油机控制系统MANB&W柴油机发展历程1、1897年德国工程师鲁道夫，狄赛尔(RudolfDiesel)在MAN柴油机公司的奥格斯堡(Augsburg)工厂发明了世界上第一台柴油机。2、丹麦B&w公司成立于1846年，总部位于丹麦哥本哈根，是丹麦一家大型船厂和领先的柴油机生产商。1898年，鲁道夫，狄赛尔授权丹麦B&W公司(Burmeister&W&inA／S)生产柴油机。3、1971年丹麦B&w公司将船厂和柴油机制造分离为两个独立的公司，柴油机制造部分于1980年被德国曼恩集团收购，改名为MANB&W柴油机丹麦公司(MANB&WDieselA／S)。4、2006年，德国曼恩集团为了更好地整合其在德国、丹麦、法国、英国的柴油机业务，将MANB&W柴油机公司(MANB&WDieselAG-德国法律下注册)重组为MAN柴油机公司(MANDieselSE-欧盟法律下注册)。典型ME机型结构及代码MC机型与ME机型比较HydraulicPowerSupplyMANB&W公司的ME的设计特点1、燃油共轨管路的压力为低压0.7-0.8MPa,伺服油压力为20MPa，都属于低压系统。每缸进行二次增压来达到喷射压力的要求。2、液压伺服油是是由主滑油泵送来的滑油通过二次过滤（6µm），再通过曲轴驱动的增压泵或电动驱动增压泵，增压到20MPa送到阀箱，通过控制各缸的电磁阀，使伺服油分别进入各缸排气阀的液压缸单元进行排气操作和进入各缸燃油增压的液压单元进行增压喷油操作。3、ME系列柴油机燃油喷射、排气阀开启、关闭和换向等控制，采用计算机直接控制系统。Elva：ElectronicValveActuationElfi:ElectronicValveFuelInjectionFIVA:FuelInjectionandValveActuationMOP:MainOperationPanelTwo-StrokeMediumBoreME–Engine,DesignConceptHCUUnit–60ME-C.FuelPumpExhaustValveActuatorElvaElfiAlphaLubricatorPlugValveCommonsupplyofHPOil2006.01.16(4140/PWN)2006-01-237工作原理-TheMEEngineHydraulicOilLoopFuel10barHydrauliccylinderunitAlphalubricatorServooilreturntosumpFineaut.filterPistoncooling+bearingsFromsumpMainlubepumpSafetyandAccumulatorblokEL.drivenhydraulicpumpsEnginedrivenhydraulicpumpsServooilFueloilpressureboosterExhaustvalveactuatorELFIELVACyl.1Cyl.2Cyl.3Cyl.4Cyl.5Cyl.6CCUCCUCCUCCUCCUCCU200barISO4406:13/16NASCode:7El-drivenpumps2006-01-239ME–Engine,PumpDriveHydraulicPumpStepUpGearChainwheelfor4”Duplexchain1)Distributorblock2)Components:FIVAAccumulatorsCylinderlubricator3)HighpressurepipesHYDRAULICCYLINDERUNIT-HCUHydraulicCylinderUnitHCUFIVAFIVADegreeCrankangle-20020406080100120140160180200220240260280300320340360Injectionstart(0)InjectionEnd(20)Exhaustvalveopen(110)ExhaustvalveClose(270)ApproximatetimingofeventstobecarriedoutbytheFIVAvalveOnanME-enginethetimingofinjectionisvariableandthisisjustanexample.CylinderlubricatorsystemAlphaLubricatorforME-Engine3331377/20041021(2200/OZS)Inductiveproximitysensorforfeed-backsignaltocontrolofpistonmovementLevelsensorforcylinderoilinlubricatorInjectionplungerStrokeadjustingscrewDrainoiloutlet200barsystemoilsupplySignalforlubricationfromcontrollerOutletsforcylinderlinerlub.oilinjectorsSpacerforbasicsettingofpumpstrokeActuatorpistonSealingringCylinderlub.oilinletNon-returnvalveEmergencycylinderlubricationIncaseofCCUfailure,wheretheCCUcannotbechangedimmediately,thecylinderlubricationcanbeachievedbyatemporarycablefromoneoftheECUunits,plug52,tothesolenoidvalveonthelubricatorontheunitinquestion.Thelubricationwillbewithrandomtiming.ME(-C)HydraulicCylinderUnit05-02-2004(2500/KNB)HydraulicCylinderUnitL70MEDoublewallpipeHCUDistributerblockDoublewallpipeMEFuelOilPressureBoosterS50MC-CS50ME-CFuelPlungerHydraulicactuatorFueloilinletpressure8barFeedbackPositionsensorSuctionValve7S50ME-CFuelInjectionSystemHighpressurehydraulicoil-inletTodrainMembraneaccumulatorFueloilinlet8barSuctionvalveELFI/FIVAProportionalValveSlideFuelvalveFuelplungerHydraulicpistonHighpressurepipe7S50ME-CHydraulicCylinderUnitHydraulicExhaustValveActuatorELVAOn/OffValveDistributionBlockFueloilPressureBoosterELFIProportionalValve2006.01.16(4140/PWN)FuelOilInjection1.Thepistonsmovetothebottomposition.2.Thefuelinletisopen.3.HydraulicoilleavesthehydraulicoilchamberviatheELFIvalve.4.TheaccumulatorsaresuppliedbytheHydraulicPowerSupply.ThepressurisedhydraulicoilisheldbackbytheclosedELFIvalve.UnpressurisedfueloilPressurisedfueloilUnpressurisedhydraulicoilPressurisedhydraulicoilELFIValvePhase1FuelOilInjection5.TheELFIvalveisactivatedupwards,closingthereturnflowandopeningfortheflowofpressurisedhydraulicoil.TheoilpassesthroughtheELFIvalveandfillsthehydraulicchamber.6.Thehighpressureforcesthepistonsupwards.7.Thefueloilinletisclosed.8.Thepressureonthefueloilrisesandexceedstheforceofthespringinthecylinder’sfuelinjectionvalve.UnpressurisedfueloilPressurisedfueloilUnpressurisedhydraulicoilPressurisedhydraulicoilPhase2ELFIValve柴油机转速控制燃油喷射采用模拟量，燃油量的多少由CCU控制FIVA的比例阀来控制喷油量，来控制主机转速。通过控制燃油进油阀的开度来实现的。采用一个三位三通液压伺服阀来控制喷油和排气阀的开启。ELVAon-offvalveExhaustvalveActuatorExhaustvalvespindleHighpressurehydraulicoil–inletMembraneaccumulatorHydraulicpushrodTodrain2006.01.16(4140/PWN)排气阀动作原理HCUELVAvalveDoublewallpipeExh.ValveactuatorHydraulicpushrod2006.01.16(4140/PWN)MEStartingAirSystemMC-CdesignME-CdesignStartingvalvesStartingvalvesStartingairNC-valvesPilotairinletBlow-offConnectionforECSdistributorTheNCvalveismountedonthemainstartingpipebehindthecylindercover06.014140/PWNStartingAirvalve(Viken1436)StartingairvalvePilotvalveforstartingairvalve06.014140/PWN曲柄角度编码器工作原理详见课本17页。Goingthroughallscreens:Alarms…Engine:Auxiliaries…Maintenance…Admin…MOPDISPLAYSME主机MOP操作界面Engine:OperationEngine:StatusEngine:ProcessInformationRunningModeAuxiliaries:HydraulicSystemAlarms:ChannelList练习题1.电控柴油机与传统的柴油机相比，其主要特点表现为______。①取消凸轮轴，喷油定时和喷油量、排气阀定时、起动空气定时等用计算机控制；②采用共轨燃油喷射系统；③采用液压伺服油系统，用系统滑油驱动高压油泵、排气阀等机构；④采用气缸压力在线检测系统A.①④B.①②④C.①～④D.①③2.电子技术在柴油机上的应用，促进了柴油机动力装置的发展，目前电子技术主要用于柴油机的______等方面的控制。①起动空气阀；②排气阀；③气缸润滑油；④燃油喷射；⑤扫气A.①②⑤B.③④⑤C.①②③④D.②③④