Software Guide
FormNo.3420-559RevA
DieselParticulateFilterOperationGuide
MachineswithYanmarTier4-FEngines
SoftwareGuide
Introduction
ThisSoftwareGuidedescribesoperationofthe
machinesoftwarethatcontrolsthedieselparticulate
lterregenerationsforthemachineswiththe5-button
InfoCenter.
Safety
Readthisinformationcarefullytolearnhowtooperate
theInfoCentercontrolonyourproduct.Youare
responsibleforoperatingtheproductproperlyand
safely.
YoumaycontactTorodirectlyatwww.Toro.com
forproductsafetyandoperationtrainingmaterials,
accessoryinformation,orhelpndingadealer.
Operation
DieselParticulateFilter
Regeneration
Thedieselparticulatelter(DPF)ispartoftheexhaust
system.Thediesel-oxidationcatalystoftheDPF
reducesharmfulgassesandthesootlterremoves
sootfromtheengineexhaust.
TheDPFregenerationprocessusesheatfromthe
engineexhausttoincineratethesootaccumulatedon
thesootlter,convertingthesoottoash,andclears
thechannelsofthesootltersothatlteredengine
exhaustowsouttheDPF.
Theenginecomputermonitorstheaccumulationof
sootbymeasuringthebackpressureintheDPF.If
thebackpressureistoohigh,sootisnotincinerating
inthesootlterthroughnormalengineoperation.To
keeptheDPFclearofsoot,rememberthefollowing:
•Passiveregenerationoccurscontinuouslywhile
theengineisrunning—runtheengineatfull
enginespeedwhenpossibletopromoteDPF
regeneration.
•IfthebackpressureintheDPFistoohighora
resetregenerationhasnotoccurredfor100hours,
theenginecomputersignalsyouthroughthe
InfoCenterwhenresetregenerationisrunning.
•Allowtheresetregenerationprocesstocomplete
beforeshuttingofftheengine.
Operateandmaintainyourmachinewiththefunction
oftheDPFinmind.Engineloadathighidle(full
throttle)enginespeedgenerallyproducesadequate
exhausttemperatureforDPFregeneration.
Important:Minimizetheamountoftimethatyou
idletheengineoroperatetheengineatlow-engine
speedtohelpreducetheaccumulationofsootin
thesootlter.
DPFSootAccumulation
•Overtime,thedieselparticulatelteraccumulates
sootinthesootlter.Thecomputerfortheengine
monitorsthesootlevelintheDPF.
•Whenenoughsootaccumulates,thecomputer
informsyouthatitistimetoregeneratetheDPF.
•DPFregenerationisaprocessthatheatstheDPF
toconvertthesoottoash.
•Inadditiontothewarningmessages,thecomputer
reducesthepowerproducedbytheengineat
differentsoot-accumulationlevels.
DPFAshAccumulation
•Thelighterashisdischargedthroughtheexhaust
system;theheavierashcollectsinthesootlter.
•Ashisaresidueoftheregenerationprocess.Over
time,thedieselparticulatelteraccumulatesash
thatdoesnotdischargewiththeengineexhaust.
•Thecomputerfortheenginecalculatestheamount
ofashaccumulatedintheDPF .
•Whenenoughashaccumulates,theengine
computersendsinformationtotheInfoCenter
intheformofanenginefaulttoindicatethe
accumulationofashintheDPF .
•Thefaultmessagesindicatethatitistimeto
servicetheDPF.
•Inadditiontothewarnings,thecomputerreduces
thepowerproducedbytheengineatdifferent
ash-accumulationlevels.
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*3420-559*A










