~.AII!!TheEngineering Society~ ForAdvancing Mobility~ LandSeaAirandSpace 400COMMONWEALTH DRIVEWARRENDALE, PA15096 861959 ADynamic Simulation oftheDetroit DieselElectronic ControlSystemin HeavyDutyTruckPowertrains MarkJ.Jennings andPaulN.Blumberg IntegralTechnologies Inc. Westmont. IL Richard W.Amann DetroitDieselAllisonDiv.-GMC Romulus, MI TruckandBusMeetingandExposition King01Prussia,Pennsylvania November 10-13,19B6Downloaded from SAE International by University of New South Wales, Wednesday, September 19, 2018Theappearance ofthecodeattheboltomofthefirstpageof thispaperindicates SAE'sconsentthatcopiesofthepapermaybemadeforpersona! orinternDIuse,or forthepersonal orinternaluseofspecificclients.Thisconsent isgivenonthecon­ dition.however. thatthecopierpaythestatedperarliclecopyfeethrough the Copyright Clearance Center,Inc.,Operations Center,P.O.Box765,Schenectady. N.Y.12301.forcopying beyondthatpermitted bySections 107or108oftheU.S. Copyright Law.Thisconsent doesnotextendtootherkindsofcopying suchas copying forgeneral distribution, foradvertising orpromotional purposes. for creating newcollective works,orforresale. Paperspublished priorto1978mayalsobecopiedalaperpaperfee01$2,50 undertheaboveslatedconditions SAEroutinely stocksprintedpapersforaperiodofthreeyearsfollowing dateof publication. Directyourorders10SAEOrdp.rDepartment. Toobtainquantity reprintrates.permission toreprintatechnical paperorper­ mission tousecopyrighted SAEpublications inotherworks,contact theSAE Publications Division. AllSAfp~prn ",~"~lI'~r"'u ,,"umunrJ m/h{SAt'CI"I>"IM,,/>IIm' D;;I;;/o~,r S"EGLOD."L ,",omLlTY n"T"D.'\SE Nopartofthispublication maybereprodul;ed inanyform,in anelectronic retrieval systemorotherwise, without theprior writtenpermission ofthepublisher. ISSN0148·7191 Copyright ©1986SocietyofAutomotive Engineers,lnc. Thispaperissubjecttorevision. Statements andopinions ad­ vancedinpapersordiscussion aretheauthor's andarchis responsibility. notSAE's;however. thepaperhasbeenedited bySAEforuniform stylingandformat.Discussion willbe printedwiththepaperifitispublished inSAlTransactions. Forpermission topublishthispaperinfullorinpart,contaLt theSAEPublications Division.Personswishing tosubmitpaperstobel'onsidered forpre­ sentation orpublication through SAl:::shouldsendthemanu­ sniptora300wordabstractofaproposed manuscript to: Sel'retary, Engineering Activity Board.SAE. PrintedinU.S.A.Downloaded from SAE International by University of New South Wales, Wednesday, September 19, 2018861959 ADynamic Simulation oftheDetroit DieselElectronic ControlSystemin HeavyDutyTruck1P0wertrains MarkJ.Jennings andPaulN.Blumberg Integral Technologies Inc. Westmont. IL Richard W.Amann OOUOlAGNOST1C REQUEST Figure 1.Schematic diagram ofDetroit Diesel Electronic Control System, reference (1).DetroitDieselAllisonDiv.-GMC Romulus, MI lNJfCTOll1 EDU CRUISE CONTROL ROADSPEEOGOVERNORfUDllACIt TACHOMETER POWER CONfllOt TWOSPEEDGOVERNOR OIAQIoIOSTlC DATAUNIii GATIERY"'.SPUDcornROtOilPRESSURECOMP PRESSURE OltHMPERATUREllMINOO·}----"i.."''',,'i;''":::'':......-rl PROMrr:- "'""'O'="'~.~.~..~'--!i!USYNCH IIA COMMAND TIiROTTtf PUUE !dCIrl--""'O,",","'"O""C---! ELECTRONIC CONTROL MODULE A," lEMPER ...TURE flexibility intothecritical functions oflnJec­ tiontiming andfuelmetering. Itcompletely replaces themechanical components associated withrackposition control andgoverning. Theincreased control overthefuelingprocess afforded byDDECcanbeexpected toprovide improvements infueleconomy, emi55ioncontro1, torque curvetailoring anddynamic torque response, asdocumented byHames,etal.[1].On theotherhand, DDECfundamentally altersthe timeresponse characteristics ofthefueling and governingprocesses fromthoseassociatedwith traditional mechanical systems. Thesecharac­ teristics mustbetakenintoaccount inthe implementation ofthecontrol system, ifthe opportuni tyforimproved responsi veness and driveability istobefullyrealized. Inorder toexp1oitthecapabilityinherent inDDECmore fully,acomprehensive, dynamic