Volkswagen Multivan 2024 - Particulate Filter; Automatic Regeneration

Regenerationfunction
Duringregenerationoftheparticulatefilter,theaccumulatedsootinsidethefilterisburnttoashsothatthefilter
doesnotbecomeclogged.Regenerationtakesplaceatperiodicintervalsathightemperatures.Inordertoachieve
thehightemperaturesintheparticulatefilter,additionaldieselisinjectedintotheenginewhichisburntinthediesel
oxidationcatalyticconverter,thusallowingtheregeneration.
Dependingonthedriver’sdrivingprofileandtheloadplacedontheengine,theamountofdieselfuelinjectedis
continuouslyadjustedtomaintainahightemperatureintheparticulatefilterduringregeneration.Duringthepost-
injectionofdiesel,smallamountsoffuelmayentertheoilcircuitintheengine.Thisfuelwillevaporatefromthe
engineoilagainduringregulardriving.Iftheengineoiltemperaturesarenothighenoughduetothedrivingprofile,
orifyoudrivealotofshortdistances,thefuelcannotevaporatefromtheengineoilandthiscancauseoilthinning.
Anindicatorlampmaylightupontheinstrumentclusterdisplay (→Engineoil) .
Automaticregeneration
Automaticregenerationoccursatregularintervalsduringeverydaydrivingandisnotshownonthedisplay.
Toassisttheregenerationoftheparticulatefilter,avoidmakingonlyshortjourneys.
Theradiatorfanmayrunonwhilethevehicleismovingorwhentheenginehasbeenswitchedoff.
Regenerationisinterruptedautomaticallywhenthevehicleisdriveninthereserverangeandtheyellowindicator
lamp lightsup.
Manualregeneration(stationaryregeneration)
Theautomaticregenerationoftheparticulatefiltercanbedelayedviathe →Fig.1
2
button,e.g.fordrivinginto
closedhalls.Youcanonlypostponeregenerationifthe indicatorlampinthebuttonlightsup.Regenerationis
abouttostartwhenthe indicatorlampinthebuttonlightsup.Youcannolongerpostponeregenerationonceit
hasbegun.
The indicatorlampinthebuttonflasheswhenregenerationhasbeenpostponed.Regenerationremains
postponedonceyourestarttheengine.Postponementofregenerationisdeactivatedwhenyoupressthe
2
button
again.
Youcanonlystartstationaryregenerationusingthe
1
buttoniftheparticulatefilterissaturatedwithsootandthe
Particulatefilter
Fig.1Uppersectionofthecentreconsole:buttonsfor
particulatefilterregeneration(illustration).
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