Milton CAT D7E Tier 4 Interim-Stage IIIB - Manual (Page 3)

Powertrain
First-of-its-kindElectricDrivedeliverspowerandefficiency
Theelectricgenerator,powerinverterandpropulsionmodule
intheelectricdrivesystemreplacetraditionalmechanical
componentssuchasatorqueconverterandtransmission.
TheCat ® C9.3enginewithACERT™Technologyturns
apowerfulelectricgeneratorthatefficientlyconverts
mechanicalenergyintoACelectricalcurrent.Electrical
currentfromthegeneratorflowsthroughspeciallyarmored
cablesandmilitarygradeconnectorstoasolid-statepower
inverter.AdvancedelectronicssendACcurrenttothe
propulsionmoduletocontrolthemotorsandprovides
DCcurrentfortheaccessorysystems.
Thepropulsionmoduledeliverswell-modulatedtorque
viaaxlestothefinaldrives.Consistingofstate-of-the-art
ACelectricmotors–andconnectedtotheD7Eupdated
differentialsteeringsystem–thepropulsionmodulehasno
movingelectricalcontactsandfewmovingmechanicalparts.
Allelectricalcomponentsarefullysealedtosafelyoperate
inawiderangeofdozingconditions.Liquidcoolingensures
thattheelectricdrivecomponentsdeliverpeakperformance
inextremetemperatureconditions.
TheD7Eelectricdrivesystemishighlyefficientatdelivering
enginepowertotheground.Infinitelyvariablespeedcontrol,
meanstherearenogearstoshift.Operatorscanconcentrate
onthetaskandthejobsite,ratherthanonshiftinggearsand
managingenginespeed.Trainingissimplifiedaswell.
Aprovendifferentialsteeringsystemcombineswith
electricdrivetomaketheD7Etheonlysystemthatcan
performlocked-trackpivotturnsforbettermaneuverability.
AdedicatedD8-sizesteeringpumpdeliversimproved
performance.
Benefi ts
• Fuelefficiency:10–30percentlessfuelburnedperhour.
• Reducedowningandoperatingcosts:Fewermoving
parts,longerdrivetraincomponentlife,reducedlifetime
serviceandmaintenance.
• Resourceful:Designedtouselessfuelandfluids,
andfewerreplacementparts.
• Increasedefficiency:Lowerfuelusagepercubicyard
ofmaterialmoved.
• Increasedproductivity:Morematerialmovedperhour.
• Versatility:Power,smoothoperationand
maneuverabilityforawidevarietyofapplications.
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