e.ae!TheEngineering~ ReswrceFor~ Advancing Mobility 400COMMONWEALTH DRIVEWARRENDALE, PA15096 hnial mrles 852320 TheNewCummins l10Engineand VolthAutomatic Transmission Powertrain D.R.Welliver Cummins EngineCompany, Inc, J.Policarpio VoithTransmissions, Inc. Truck&BusMeetingandExposition Chicago, Illinois December 9-12,1985Downloaded from SAE International by University of Birmingham, Sunday, August 19, 2018Theappearance ofthecodeatthebottomofthefirstpageof thispaperindicates SAE'sconsentthatcopiesofthepapermaybemadeforpers::ma! orinternrluse,or forthepersonal orinternaluseofspecificclients.Thisconsent isgivenonthecon~ dition,however, thatthecopierpaythestatedperarticlecopyfeethrough the Copyright Clearance Center,Inc.,Operations Center,P.O.Box765,Schenectady, N.Y.12301,forcopying beyondthatpermilled bySections 107orlOBoftheU.S. Copyright Law.Thisconsent doesnotextendtootherkindsofcopying suchas copying forgeneral distribution, toradvertising orpromotional purposes, for creating newcollective works,orforresale. Paperspublished priorto1978mayalsobecopiedataperpaperfeeof$2.50 undertheabovestatedcondilions. SAEroutinely stocksprintedpapersforaperiodofthreeyearsfollowing dateof publication. DirectyourorderstoSAEOrdArDepartment. Toobtainquantity reprintrates,permission toreprintatechnical paperorper· mission 10usecopyrighted SAEpublications inotherworks,contact theSAE Publications Division. AllSAfe1'"1"-""ro'.~lIr"(ln1.",J ",Jruu '"In,'SAl1;1,,1,.1.1I"hlln D41.1'4'r SAEGlOIl.'.L MOBllln' DATAIlASE Nopartofthispublication maybereproduced inanyform,in anelectronic retrievalsystemorotherwise,.without theprior writtenpermission ofthepublisher. ISSN0148·7191 Copyright ©1985SocietyofAutomotive Engineers,lnc. Thispaperissllhje~·ttorevision. Statements andopinions Old­ vanredinpapersordiscussion aIetheauthor's andarehis responsihility, notSAE's;however. thepaperhasbeeneditcd bySALforuniforlll stvungandformat. Discussion willbe printedwiththep"Jper IIIIISpublished inSALTraosuclions. rorpermission topublishthispaperinfullorinpart. conla~·t theSAtPublkations Division.Persons wishing. tosubmitpaperstobel:onsidered forpre­ sentation orpublil:ation through SAt::shouldsendthemanu­ sniptoraJOOwordabstral:tofaproposed manuscript to: Sencl"r), l-ng.ine~'ring. Al:tivity Hoard,SAL PrintedinU.S.A.Downloaded from SAE International by University of Birmingham, Sunday, August 19, 2018852320 TheNewCummins l10Engineand VoithAutomatic Transmission Powertrain D.R.Welliver Cummins EngineCompany, Inc. J.Policarplo VoithTransmissions, Inc. ABSTRACT InT9B2,Cummins En9ine Company began producing anewtenliterdisplacement heavy dutydiesel enginedesignated theLlO.This engine wasalIcleansheetofpaperlldesign which hadgoalsoflowemissions andlow noise,whileadvancing thestateoftheart infuelefficiency anddurability. Cumminshas nowjoined Voith Transmissions inoffering theL10engine withtheVoith DB63ADR angle drive transmission toprovide anewpowerpackage fortransverse installations intheNorth American transit market. Boththeengine andthetransmission haveincorporated unique features which allowthepackage tobeinstalled incurrent transit busOEMvehicles. Thispaperpresents thedevelopment of thatpackage. ASIGNIfICANT PORTION ofatransit property's operating budgetisusedforfuelpurchases. Duetothis,lifecyclecosting isbeing givengreater consideration asaguideto reducing theoverall operating costs. fuel economy hasalargeimpact onlifecycle costs. Anewpowerpackage, designed with fuelefficiency anddurability inmind,is nowavailable fortheNorthAmerican transit market. Thispaperdescribes thedevelopment and features oftheengine andtransmission whichmakeupthepackage. Itdescribes how thecomponents havebeencombined toyield anattractive package andshowsactual in service fuelmileage comparisons from various fieldtestlocations around the country.lHECUMMINS L10ENGINE Development oftheLlOengine beganin 1976,initially targeted fortheEuropean truckmarket. Laterstudies revealed a worldwide potential fornot