No DPF regen on long journey? Is that good?
Discussion
Hi,
So when I got this car 2010 S80 almost 5 months ago I was a bit wary of it being a diesel and that I only do short trips. I drive 11.5 miles which is usually 17 minute drive to work in the morning and then back at night. I've only bought the better fuels and put in lucus upper cylinder lubricant once on a full tank. Last week I drove 42 miles it sat there fore two hours and then drove the 42 back. I was expecting it to do a regen but nothing apparently happened. Is this meaning my drive to work was fine or did it not hit the appropriate parameters to get to regen?
So when I got this car 2010 S80 almost 5 months ago I was a bit wary of it being a diesel and that I only do short trips. I drive 11.5 miles which is usually 17 minute drive to work in the morning and then back at night. I've only bought the better fuels and put in lucus upper cylinder lubricant once on a full tank. Last week I drove 42 miles it sat there fore two hours and then drove the 42 back. I was expecting it to do a regen but nothing apparently happened. Is this meaning my drive to work was fine or did it not hit the appropriate parameters to get to regen?
stevemcs said:
It will carry out a regen when its collected enough soot and then only if all other conditions are met.
What conditions? I would have thought after almost 5 months of five days a week driving except for 2 weeks holiday it would have had enough soot? So anyway how often does a car used for short journeys usually want to do a regen?Thanks for your responses.
IAmTheWalrus said:
ConnectionError said:
How do you know it didn’t regen?
I had read somewhere its supposed to tell you to not turn your engine off (until completed)?cuprabob said:
IAmTheWalrus said:
ConnectionError said:
How do you know it didn’t regen?
I had read somewhere its supposed to tell you to not turn your engine off (until completed)?IAmTheWalrus said:
What conditions? I would have thought after almost 5 months of five days a week driving except for 2 weeks holiday it would have had enough soot? So anyway how often does a car used for short journeys usually want to do a regen?
Thanks for your responses.
My 2.2 Mondeo on does 5 miles a day, there is no warning that its carrying out a regen other than if you stop the fan continues to run and the car seems very hot. I have had no issues so far, i'd just go with if it hadn't carried out a regen you would have known by now.Thanks for your responses.
Oh and yes the Volvo does - on the D5 dump the fuel into the engine oil, there is usually a warning to tell you to under fill the engine oil on these engines.
IAmTheWalrus said:
Why does it have to dump fuel into the oil? I've never heard of this process. How does one under full it. It can't be advice from the manufacturer to underfill when they tell you how much torque put in.
You under fill the engine oil, you sometimes find it written on the plastic engine cover. Once it starts the DPF regen process it uses the diesel to wash the DPF clean once its at a certain temperature, every system is different but the way Volvo designed it on the D5 is if the DPF regen fails for any reason the fuel is dumped back into the engine, weakening the oil dilution and raising the level.It sounds like you have nothing to worry about, just keep up to date with the oil changes, use good quality fuel and keep the fuel level topped up, and then a good run once a month should see you ok.
stevemcs said:
You under fill the engine oil, you sometimes find it written on the plastic engine cover. Once it starts the DPF regen process it uses the diesel to wash the DPF clean once its at a certain temperature, every system is different but the way Volvo designed it on the D5 is if the DPF regen fails for any reason the fuel is dumped back into the engine, weakening the oil dilution and raising the level.
It sounds like you have nothing to worry about, just keep up to date with the oil changes, use good quality fuel and keep the fuel level topped up, and then a good run once a month should see you ok.
Thanks. So it does put fuel into the engine, is it really a pint? a pint of fuel sounds like a lot. Car runs fine but there are a couple of weird issues I have with the readings for fuel and mph, it says I average 30mph or so mph despite the fact I do 30 mph to get out of the village and onto the dual carriage way for about two minutes, I then spend 15 minutes on the dual carriage way at 62mph or so and then I come off the dual carriage way and a few hundred yards to where I work. So that is not remotely an average of 30mph. It also says I average 40mpg, yet, the display shows this at 30mph and far better when on the dual carriage way. Is there anything I should be concerned about? Is this a car that learns driving style?It sounds like you have nothing to worry about, just keep up to date with the oil changes, use good quality fuel and keep the fuel level topped up, and then a good run once a month should see you ok.
stevemcs said:
about 0.5 to 1.0 in terms of overfill.
I wouldn't be to concerned about the average fuel it will have no impact on the DPF, you could always reset the average fuel/speed.
Hi,I wouldn't be to concerned about the average fuel it will have no impact on the DPF, you could always reset the average fuel/speed.
thanks for your response, 0.5 to 1 of what? Pints?
Do you know how to reset average fuel/speed? Thanks for your help.
IAmTheWalrus said:
Is this a car that learns driving style?
Not quite sure what you are getting at here.Some autos allegedly learn your shift pattern/acceleration rate in an attempt to keep you in the right gear, but not sure what context you are talking about as you seem to be talking about average speed & economy?
E-bmw said:
IAmTheWalrus said:
Is this a car that learns driving style?
Not quite sure what you are getting at here.Some autos allegedly learn your shift pattern/acceleration rate in an attempt to keep you in the right gear, but not sure what context you are talking about as you seem to be talking about average speed & economy?
Gassing Station | Volvo & Polestar | Top of Page | What's New | My Stuff