First DPF Re-Gen

planemad · 03-15-2016, 02:30 AM

Car did first DPF regen on the way to work this morning @ 180mls.
What a bloody stink! Had to turn the ventaliation off.

RobUK · 03-15-2016, 02:42 AM

Is that the 'bad eggs' smell you sometimes get a whiff of when out and about?

teaston · 03-15-2016, 03:06 AM

Quote:

Originally Posted by planemad

Car did first DPF regen on the way to work this morning @ 180mls.
What a bloody stink! Had to turn the ventaliation off.

I've never smelt it in mine!

Dave_3 · 03-15-2016, 03:25 AM

Quote:

Originally Posted by planemad

Car did first DPF regen on the way to work this morning @ 180mls.
What a bloody stink! Had to turn the ventaliation off.

The most you will ever notice is only when stationary with a window open and a light breeze, and you may get a very slight whiff of burnt caramel - probably more noticeable is the sense of hot exhaust, which you may notice if parking up during a DPF regen. Walking away you might notice the heat and pinging, same as you would get from a hard driven car. If it is the first ever regen it may be burning off any residues, cleaning materials or detritis on your exhaust. But most people won't notice a thing. You shouldn't get anything at all through the ventilation.

'bad eggs' is more likely the output from petrol catalytic converters - nothing like a DPF regen.

D.

ep22jg · 03-15-2016, 03:26 AM

Never noticed mine do a DPF clean in 14k miles??

snipnoob86 · 03-15-2016, 04:44 AM

ive never noticed any smell or sound from a dpf regen but i have felt the heat when the window is down, parked up at lights with my hand hanging out the door

onstat · 03-15-2016, 05:31 AM

Do the BM's operate like the VAG cars that run the fan for ten minutes if you stop the car during a regen? Its a right PITA sometimes when you get someone running after you telling you you've left the car turned on!

RalphyBMW · 03-15-2016, 05:32 AM

Mine is just over 18,500, I've never noticed a regen?

HighlandPete · 03-15-2016, 05:43 AM

Quote:

Originally Posted by ep22jg

Never noticed mine do a DPF clean in 14k miles??

Quote:

Originally Posted by RalphyBMW

Mine is just over 18,500, I've never noticed a regen?

Type of driving may mean they are mostly passive regenerations, or you just don't notice any active regenerations. They'll be happening, as you'd be having DPF issues by now, if they were not.

Regeneration intervals in typical driving are every 300 - 600 miles. EU6 compliant engines have an even more complex regeneration activity.

ep22jg · 03-15-2016, 05:55 AM

I wish the regen could be initiated, or at least indicated that it's happening.

My mileage is split between some long runs and then a short spell of very short runs.
If I new a regen was happening, I could keep driving until it had finished. Or start it if I knew I was on a longer run

HighlandPete · 03-15-2016, 06:13 AM

Quote:

Originally Posted by ep22jg

I wish the regen could be initiated, or at least indicated that it's happening.

My mileage is split between some long runs and then a short spell of very short runs.
If I new a regen was happening, I could keep driving until it had finished. Or start it if I knew I was on a longer run

When I had my 330d I could sense when it was regeneration, (engine note, gear holds, mpg drop off, etc.). I'd often continue/extend a trip to ensure it was complete. Was often a nuisance as regens' would start near home, or out for appointments, so an inconvenience to run on a few miles. It is one reason for going back to petrol, as I was wasting time and fuel, just to keep the engine from possible issues.

Dave_3 · 03-15-2016, 06:59 AM

Quote:

Originally Posted by HighlandPete

When I had my 330d I could sense when it was regeneration, (engine note, gear holds, mpg drop off, etc.). I'd often continue/extend a trip to ensure it was complete. Was often a nuisance as regens' would start near home, or out for appointments, so an inconvenience to run on a few miles. It is one reason for going back to petrol, as I was wasting time and fuel, just to keep the engine from possible issues.

The new 30D engine is much better at hiding the regen. I hardly even notice it now. It is very discrete. Still a few tells though, but very subtle.

D:

Scottiedog · 03-15-2016, 07:43 AM

I can hear when mine is doing its thing as the exhaust note changes. They annoying thing is I'll do a few hounded miles then get 2miles from home and hear it start. I just end up driving around for a bit.

....,,,,..,,.. · 03-15-2016, 08:50 AM

I was talking to BMW tech and he said dpf regen is disabled when driving in ECO mode.

Have not really checked if this is or is not the case.

However it does sound logical.

It might be worth those that regularly use it, asking the question.

ep22jg · 03-15-2016, 09:44 AM

Quote:

Originally Posted by Brigand

I was talking to BMW tech and he said dpf regen is disabled when driving in ECO mode.

Have not really checked if this is or is not the case.

However it does sound logical.

It might be worth those that regularly use it, asking the question.

If you did use Eco pro all the time, surely it wouldn't allow the filter to clog up??

....,,,,..,,.. · 03-15-2016, 10:28 AM

Quote:

Originally Posted by ep22jg

If you did use Eco pro all the time, surely it wouldn't allow the filter to clog up??

I would have thought so.

A lot depends on what parameters have been set for triggering a regen.

I know on Ford to force one, it was over 2k revs, 50mph minimum and about 25 miles after the engine had come to temp.

ep22jg · 03-15-2016, 10:31 AM

Then there is definitely a case for being able to activate it yourself!!

planemad · 03-15-2016, 12:50 PM

Think all DPF are designed to clog up whatever the driving mode.
The byproduct of the fuel compression which gets trapped in the DPF willl remain the same in any mode.
Effectivatly the car has to raise the engine temp to enable a flush/regen of the DPF. I suppose its like wringing out a sponge full of water so you can dip it again in the water to absorb more water.

Watsey · 03-15-2016, 03:55 PM

Quote:

Originally Posted by planemad

Think all DPF are designed to clog up whatever the driving mode.
The byproduct of the fuel compression which gets trapped in the DPF willl remain the same in any mode.
Effectivatly the car has to raise the engine temp to enable a flush/regen of the DPF. I suppose its like wringing out a sponge full of water so you can dip it again in the water to absorb more water.

Got to love auto-correct : what exactly does "effectivatly" mean ??

03-15-2016, 02:30 AM	#1
planemad Lieutenant Colonel 773 Rep 1,643 Posts Drives: 2020 Audi SQ7 & 2019 AM DB11 Join Date: Mar 2013 Location: The Democratic Peoples Republic Of South East England iTrader: (0)	First DPF Re-Gen Car did first DPF regen on the way to work this morning @ 180mls. What a bloody stink! Had to turn the ventaliation off.
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03-15-2016, 02:42 AM	#2
RobUK Brigadier General 2811 Rep 4,935 Posts Drives: 340i MPPSK Join Date: Jun 2012 Location: Sussex, N.Yorks, UK iTrader: (0) Garage List 2015 340i MPPSK [0.00] 2001 Yamaha FZS1000 [0.00]	Is that the 'bad eggs' smell you sometimes get a whiff of when out and about? __________________ Life is a state of mind
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03-15-2016, 03:26 AM	#5
ep22jg Captain 234 Rep 738 Posts Drives: G01 M40i Join Date: May 2015 Location: Hampshire iTrader: (0)	Never noticed mine do a DPF clean in 14k miles?? __________________ X3 M40i Carbon Black
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03-15-2016, 04:44 AM	#6
snipnoob86 Major 288 Rep 1,201 Posts Drives: 335D Saloon Join Date: Feb 2015 Location: Manchester iTrader: (0)	ive never noticed any smell or sound from a dpf regen but i have felt the heat when the window is down, parked up at lights with my hand hanging out the door
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03-15-2016, 05:31 AM	#7
onstat Second Lieutenant 90 Rep 274 Posts Drives: 335d Touring Join Date: Jan 2016 Location: North Wales iTrader: (0)	Do the BM's operate like the VAG cars that run the fan for ten minutes if you stop the car during a regen? Its a right PITA sometimes when you get someone running after you telling you you've left the car turned on! __________________ F31 335d M Sport \| Estoril Blue & CR \| M Sport+ \| Pro Nav \| Comfort Pack \| Adaptive M Sport suspension \| Active Cruise
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03-15-2016, 05:32 AM	#8
RalphyBMW Captain 165 Rep 942 Posts Drives: F31 330d xDrive MSport Join Date: Mar 2014 Location: West Yorkshire iTrader: (0)	Mine is just over 18,500, I've never noticed a regen? __________________ 2016 F80 M3
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03-15-2016, 05:55 AM	#10
ep22jg Captain 234 Rep 738 Posts Drives: G01 M40i Join Date: May 2015 Location: Hampshire iTrader: (0)	I wish the regen could be initiated, or at least indicated that it's happening. My mileage is split between some long runs and then a short spell of very short runs. If I new a regen was happening, I could keep driving until it had finished. Or start it if I knew I was on a longer run __________________ X3 M40i Carbon Black
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03-15-2016, 07:43 AM	#13
Scottiedog Captain 243 Rep 710 Posts Drives: 435d GC Join Date: Sep 2015 Location: Southampton iTrader: (0)	I can hear when mine is doing its thing as the exhaust note changes. They annoying thing is I'll do a few hounded miles then get 2miles from home and hear it start. I just end up driving around for a bit.
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03-15-2016, 08:50 AM	#14
....,,,,..,,.. General 6733 Rep 20,651 Posts Drives: xxxx Join Date: Dec 2013 Location: xxxx iTrader: (0)	I was talking to BMW tech and he said dpf regen is disabled when driving in ECO mode. Have not really checked if this is or is not the case. However it does sound logical. It might be worth those that regularly use it, asking the question.
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03-15-2016, 10:31 AM	#17
ep22jg Captain 234 Rep 738 Posts Drives: G01 M40i Join Date: May 2015 Location: Hampshire iTrader: (0)	Then there is definitely a case for being able to activate it yourself!! __________________ X3 M40i Carbon Black
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03-15-2016, 12:50 PM	#18
planemad Lieutenant Colonel 773 Rep 1,643 Posts Drives: 2020 Audi SQ7 & 2019 AM DB11 Join Date: Mar 2013 Location: The Democratic Peoples Republic Of South East England iTrader: (0)	Think all DPF are designed to clog up whatever the driving mode. The byproduct of the fuel compression which gets trapped in the DPF willl remain the same in any mode. Effectivatly the car has to raise the engine temp to enable a flush/regen of the DPF. I suppose its like wringing out a sponge full of water so you can dip it again in the water to absorb more water.
	Appreciate 0 Quote