Caterpillar G3600 Engine Control System

CaterpillarG3600EngineControlSystem卡特彼勒G3600发动机控制系统TheADEMIIIgasenginecontrolsystem(AdvancedDigitalEngineManagement)asastandardfeatureonallCatG3600seriesgasengines.Twomodules(threeontheG3612/3616):theGasEngineControlModule(GECM)andIntegratedCombustionSensingModule(ICSM),LCDdisplay.ThehighlyintegratecontrolsystemsupplyAir/Fuel,Ignition,DetonationandTurbochargercontrol.TheADEMIIIsystemmonitor,controlandprotectengineatoptimizeengineperformance.ADEMIII发动机控制系统用于所用卡特彼勒G3600系列发动机，它由两个模块组成：GECM和ICSMG3612/3616有两个ICSM,由三个模块组成）配LCD显示。高度集成化的ADEMIII控制系统完成：空燃比、点火、爆燃和增压器控制，整个系统可以监测，控制和保护发动机，并使发动机在最佳状态运行。Operationtemperature:-40oCto66oC工作温度：Powerinput:24VDC功率输入：Powerconsumption:890W(37amps)功率消耗：Size(WxHxD):IM:222x181x94mm尺寸（长x宽x高）DSM:210x243x108mmAFM:160x262x108mmAreaclassification:ClassIGroupDDivision2,hazardouslocation防爆区域：Enclosure:NEMAType3R外壳：Softwareprogram:AwindowsPlatformPCprogramforsiteengineeringterminal.软件程序：Theenginesincorporateadvancedtechnologythatisessentialforobtainingemissions,andthermalefficiency.发动机采用了产生高输出、低排放和高热效率先进技术。Precisecontroloftheengineparametersenableoptimumengineperformancecapableofusingavarietyoffuelsinvariousambientconditions.发动机运行参数的精确控制使发动机达到了最佳的性能。发动机具有在不同外界状况下燃用多种燃料气的能力。A.ECMDescriptionECM模块说明TheEngineControlModule(ECM)controlsmostofthefunctionsofengine.Themoduleisanenvironmentallysealedunitthatismountedinajunctionboxontheengine.TheECMmonitorsjunctionboxontheengine.TheECMmonitorsvariousinputsfromsensorsinordertoactivaterelays,solenoids,etcattheappropriatelevels.发动机控制模块（ECM）控制发动机的大部分功能。该模块是一个密封装置，固定在发动机接线盒内。ECM监控传感器的各种输出，在达到适当的程度时，激发继电器、线圈等工作。TheECMmonitorstheactualenginespeed.TheECMcalculatesthedifferencebetweentheactualenginespeedandthedesiredenginespeed.TheECMcontrolsthefuelactuatorinordertomaintainthedesiredenginespeed.ECM监控发动机的实际转速。ECM可计算出发动机实际转速与要求转速之间的差异。ECM控制燃料执行器，以使发动机保持要求的转速。Thefuel,theinletair,andtheexhaustbypassareregulatedbytheECMthroughcontrolofthreeelectrohydraulicactuators.Theactuatorsareelectronicallycontrolledandhydraulicallyactuated.Thehydrauliccontrolledandhydraulicallyactuated.Thehydraulicoilisinacircuitthatisseparatefromtheengineoil.Thehydraulicoiliscircuitbyagear-drivenpump.ECM通过控制三个电动液压执行器来调节燃料、空气进气和排气旁通。执行器是电子控制且为液压促动。液压油回路与发动机机油油路是分开的。液压油是由齿轮驱动的。TheECMoperatesthefuelactuatorinordertoallowfueltoenterthegasmanifold.Fuelflowsfromthemanifoldthroughanorifice.Someofthegasisroutedthoughanadjustableneedlevalveandintoapre-combustionchamber.Therestofthegasisroutedthroughagasadmissionvalvethatisactuatedbythecamshaft.Thisallowsfueltoentertheinletportinthecylinderhead.ECM操作燃料气执行器以使燃料进入燃气汇管。燃料从汇管孔中流出。一部分燃料气体通过可调节针阀进入预燃室中。余下的气体通过凸轮轴驱动的燃气门进入。这样使燃料进入气缸盖的进气口。Airforcombustionflowsfromtheturbochargertoanairinletchoke.TheECMoperatestheairchokeactuatorinordertoallowairtoentertheinletairmanifold.Theairflowsthroughtheaftercoolertotheairplenumandintothecylinderheadinletport.Theairismixedwithgasincylinderhead.Therichfuelinthepre-combustionchamberisignitedbythesparkplug.Theflamefromthepre-combustionchamberprovidestheignitionfortheair/fuelmixtureinthecylinder.燃烧的空气从涡轮增压器流向阻风门。ECM操作阻风门执行器以使空气进入进气汇管。空气从后冷却器流入气室并进入气缸盖进气口。在气缸盖中空气与燃气混合。预燃室中的浓燃料被火花塞点燃。这样就点燃了气缸中的空气／燃料混合物。Theinletmanifoldairpressureiscontrolledbytheairinletchokeandtheexhaustbypassvalve.TheECMdeterminestheairpressurethatisrequiredtomaintainthecorrectair/fuelratio.进气汇管空气压力有阻风门和排气旁通阀控制。由ECM确定要求保持正确空气／燃料比的气压。Eachcylinderhasanignitiontransformer.Toinitiatecombustion,theECMsendsapulseofapproximately108voltstotheprimarycoilofeachignitiontransformerattheappropriatetimeandfortheappropriateduration.Thetransformerincreasesthevoltagewhichcreatesasparkacrossthesparkplugelectrode.每个气缸各有一个点火变压器。为了点火燃烧，ECM在适当的时间并以适当的持续时间向每个点火变压器的初级线圈发送约为108伏的脉冲。变压器升压，在火花塞电极间产生一个火花。Theelectroniccontrolsystemcontrolstheignitiontiming.Thecontrolsystemmonitorschangesintheload.Thecontrolsystemmodifiesthetiminginresponsetothechangeinload.Thetimingcanalsobemodifiedonordertocompensatefordetonationthatisdetected.电子控制系统控制点火正时。控制系统监控载荷的变化。控制系统修正正时，使之与载荷的变化相适应。为了补偿发现到爆燃，也要修正正时。Thefuelflowisthemainfactorinthecalculationoftheengineload.Zerofuelflowiszeroload.Afuelflowthatisgreaterthanzeroisusedtocalculateapercentageoftheindicatedload.在计算发动机载荷时，燃料流量是考虑的主要因素。燃料流量是零，载荷为零。燃料流量比零值大时。用来计算指示载荷百分比。Atloadsthatarelessthan40percent,theair/fuelratioistrimmedbytheexhaustporttemperatures.载荷小于40%时，由阻风门执行器控制空气／燃料比，阻风门执行器由排气口温度调节。B.ICSMDescriptionICSM模块说明TheenginehasanIntegratedCombustionSensingModule(ICSM)foreachbankofcylinders.EacheyelinerexhaustporthasathermocouplethatismonitoredbyanICSM.TheICSMmonitorstheactualexhaustporttemperatureforonebankofcylinders.TheICSMcalculatesanaverageexhaustporttemperatureandthedesiredexhaustporttemperature.TheICSMcommunicatestheinformationtotheECM.TheECMcontrolstheairchokeactuatorinordertomaintainthedesiredexhausttemperature.发动机气缸每排各有一个集成式燃烧传感模块ICSM。每个气缸排气口各有一个由ICSM监测的热电偶。ICSM监测气缸每排的排气口实际温度。ICSM计算气缸每排的排气口平均温度图。ECM向ICSM发送要求的排气温度。ICSM计算排气口平均温度与要求的排气口温度之间的差异。ICSM向ESM传输信息。ESM控制阻风门执行器，以保持要求的排气口温度。Whentheloadreachesapproximately40percent,theair/fuelratioiscontrolledb