184ps FR TDI Regen Frequency
- Thread starter Dt-spd
- Start date
I'm interested to know this also!
Is it a fixed time period or miles covered, or does the soot build up at a different rate depending on journey time/engine temperatures etc.. and then trigger the regen?
Is it a fixed time period or miles covered, or does the soot build up at a different rate depending on journey time/engine temperatures etc.. and then trigger the regen?
Soot build up depends on the type of driving you do
I have just got a 1.6 tdi and have only covered about 400 miles so far I have noticed it doing a regeneration about 3 or 4 times in this period
The wife drives it more than me so it could be more
Its mainly used in stop start traffic too! This car has 10k on the clock and is a 14 plate
Hope that helps at all
I have just got a 1.6 tdi and have only covered about 400 miles so far I have noticed it doing a regeneration about 3 or 4 times in this period
The wife drives it more than me so it could be more
Its mainly used in stop start traffic too! This car has 10k on the clock and is a 14 plate
Hope that helps at all
Type of driving. I've got a 65 plate, covered 1,000 miles and actually haven't noticed a regen.
I do 4 short trips per week with 3 longer ones on a motorway and A roads.
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I do 4 short trips per week with 3 longer ones on a motorway and A roads.
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The EA288 motor has various stages of DPF regeneration :
• Passive regeneration ( when the engine is up to temp and the car is used mostly on a motorway at a steady speed - the user will not normally notice this regeneration)
• Heat-up phase - ( when the engine is cold - the ECU goes in to a pre programmed heat up phase to bring the DPF up to temp quickly - identified by the higher idle after startup )
• Active regeneration ( The ECU measures the back pressure or soot loading of the DPF and goes in to active DPF regeneration mode - normally identified by a raised idle speed even when the engine is at full temperature )
• Regeneration trip by customer ( Customer must go for a drive to force the regeneration to complete if the DPF light comes on in the dashboard )
• Service regeneration ( Forced DPF regeneration by connecting the dealers diagnostic computer when normal regeneration is not possible )
• Mileage regeneration ( as a safety backup - the ecu will perform an active regeneration every 465 miles regardless of the soot loading of the DPF if it has not registered a COMPLETE regeneration cycle in the last 465 miles )
• Passive regeneration ( when the engine is up to temp and the car is used mostly on a motorway at a steady speed - the user will not normally notice this regeneration)
• Heat-up phase - ( when the engine is cold - the ECU goes in to a pre programmed heat up phase to bring the DPF up to temp quickly - identified by the higher idle after startup )
• Active regeneration ( The ECU measures the back pressure or soot loading of the DPF and goes in to active DPF regeneration mode - normally identified by a raised idle speed even when the engine is at full temperature )
• Regeneration trip by customer ( Customer must go for a drive to force the regeneration to complete if the DPF light comes on in the dashboard )
• Service regeneration ( Forced DPF regeneration by connecting the dealers diagnostic computer when normal regeneration is not possible )
• Mileage regeneration ( as a safety backup - the ecu will perform an active regeneration every 465 miles regardless of the soot loading of the DPF if it has not registered a COMPLETE regeneration cycle in the last 465 miles )
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Good info DEAN0, is there anywhere I can get a copy of the learning module for EA288 engine ??
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That's great thank you.
Page 62 is interesting, although only an example it seems active regen is triggered at 18g soot. I measured some data using VCDS and got 0.04g/km soot accumulation on a steady drive. That works out at about 280 miles per regen so sounds like that's how it's been calibrated and matches what I get.
Can stop worrying that something is wrong with it now, the curse of being an Engineer I guess.
the curse of being an Engineer I guess.
Why do you think I dug out the self learning module - fellow engineer here - haha
Can you see the DPF temp on VCDS?
I've read elsewhere that in UK motorway driving, even in a lower gear, the DPF doesn't get anywhere near hot enough to do passive regen. It runs around 250C and needs to be at least 350C to passive regen.
It seems from the VW doc linked to that the car does a mileage based regen anyway every 465 miles if it hasn't done an active regen - so sounds like even if it was doing passive regens it would still do the mileage one.
Yeah you can see pre and post DPF temps and you are right, normal driving it doesnt get close to a passive regen. Needs a lot of load to get to 350degC and even at that temp the passive regen would'nt be very good, needs to be in the 500's for a good soot burn. Forcing a regen at 465miles is quite a low mileage, it means the DPF capacity must be quite small and the unit itself is quite small for a 2L engine.
I work on the calibration of DPF systems for a midlands based premium car company and our 2L engine has a 3L capacity DPF and mileage based regen is triggered at 1200km ( 745 miles ). It also sits in passive regen at anything over 75mph so a lot of motorway driving will lead to very few active regens.
I'm sure VW/SEAT have done their work correctly and made sure that oil dilution is not an issue with a 280 miles regen frequency. Then again, what with their current issues maybe they havnt
I think a oil change every 5k miles might be the way to go, I plan to keep an eye on oil dilution and go from there.
Thanks for that - can I ask a couple of questions:
How do you get yours to go into passive regen when the VW one is a long way off the required temp?
Would you do that just by making sure the oil level doesn't rise, or by analysing the oil?
How do you get yours to go into passive regen when the VW one is a long way off the required temp?
Would you do that just by making sure the oil level doesn't rise, or by analysing the oil?
The whole package can affect passive regen. I believe it was a requirement from day 1. The exhaust layout is a lot different to VW but there are so many other factors that make a difference.
I've used a little oil test kit made by MotorCheckup and I bought it from Opie Oils. Its not great but does allow you to check the oil using just a drop from the dipstick. Might look to have a more accurate oil test done but its probably easier just to change it anyway.
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Have you tried a motorway run at around 2200 rpm ?
I read somewhere that at a steady 2200 rpm with the engine warm - the ecu alters the fueling to increase dpf temps.
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