Toro Groundsmaster 4300-D - Diesel Particulate Filter (DPF); DPF Regeneration Process

7.Whenthecuttingunitsareoverthefaredgeof
themowingarea,liftthecuttingunits.
8.Performatear-shapedturntoquicklylineupfor
yournextpass.
DieselParticulateFilter
Regeneration
Thedieselparticulatelter(DPF)ispartoftheexhaust
system.Thediesel-oxidationcatalystoftheDPF
reducesharmfulgassesandthesootlterremoves
sootfromtheengineexhaust.
TheDPFregenerationprocessusesheatfromthe
engineexhausttoincineratethesootaccumulatedon
thesootlter,convertingthesoottoash,andclears
thechannelsofthesootltersothatlteredengine
exhaustowsouttheDPF.
Theenginecomputermonitorstheaccumulationof
sootbymeasuringthebackpressureintheDPF .If
thebackpressureistoohigh,sootisnotincinerating
inthesootlterthroughnormalengineoperation.T o
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
thesootlter.
DPFSootAccumulation
•Overtime,thedieselparticulatelteraccumulates
sootinthesootlter.Thecomputerfortheengine
monitorsthesootlevelintheDPF.
•Whenenoughsootaccumulates,thecomputer
informsyouthatitistimetoregeneratetheDPF.
•DPFregenerationisaprocessthatheatstheDPF
toconvertthesoottoash.
•Inadditiontothewarningmessages,thecomputer
reducesthepowerproducedbytheengineat
differentsoot-accumulationlevels.
EngineWarningMessages—SootAccumulation
IndicationLevel
FaultCode
EnginePowerRatingRecommendedAction
Level1:Engine
Warning
g213866
Figure25
CheckEngine
SPN3719,FMI16
Thecomputerde-ratesthe
enginepowerto85%.
Performaparkedregeneration
assoonaspossible;refer
toParkedorRecovery
Regeneration(page42).
Level2:Engine
Warning
g213867
Figure26
CheckEngine
SPN3719,FMI0
Thecomputerde-ratesthe
enginepowerto50%.
Performarecoveryregeneration
assoonaspossible;refer
toParkedorRecovery
Regeneration(page42).
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