Understanding Diesel DPF Regeneration

Puerto Rican 335d · 10-15-2013, 11:34 AM

I came across this and I came to understand this DAMN DPF, here's the link(sorry did not know it was an AMSOIL link until I saw it completely,but to post):

Quasimodem · 10-15-2013, 11:56 AM

Great video, do we have the differential pressure sensors in the US 335d?

crugeman · 10-15-2013, 12:02 PM

Great vid man, thanks for posting.

Always good to have more information.

So it this also a plug for the additive that you use

montr · 10-15-2013, 12:27 PM

Quote:

Originally Posted by Quasimodem

Great video, do we have the differential pressure sensors in the US 335d?

Yes. My car is at the dealer now for that. They are waiting for an exhaust pressure sensor to arrive. As usual, this is not a part that is available locally.

taibanl · 10-15-2013, 12:40 PM

Quote:

Originally Posted by montr

Quote:

Originally Posted by Quasimodem

Great video, do we have the differential pressure sensors in the US 335d?

Yes. My car is at the dealer now for that. They are waiting for an exhaust pressure sensor to arrive. As usual, this is not a part that is available locally.

I do not think there is a differential sensor in US 335d

Puerto Rican 335d · 10-15-2013, 12:52 PM

now that i know how it works I will do as I did with my catalic converter on a car i had gut it out hopefully

Hoooper · 10-15-2013, 12:54 PM

Quote:

Originally Posted by taibanl

I do not think there is a differential sensor in US 335d

there is, that is how the DDE knows to initiate a DPF regen supposedly

http://realoem.com/bmw/showparts.do?...87&hg=13&fg=15

Puerto Rican 335d · 10-15-2013, 12:59 PM

now that i know how it works I will do as I did with my catalic converter on a car i had gut it out hopefully

Hoooper · 10-15-2013, 02:12 PM

Quote:

Originally Posted by Puerto Rican 335d

now that i know how it works I will do as I did with my catalic converter on a car i had gut it out hopefully

after getting the sensors and regen tuned out?

taibanl · 10-15-2013, 03:45 PM

Quote:

Originally Posted by Hoooper

Quote:

Originally Posted by taibanl

I do not think there is a differential sensor in US 335d

there is, that is how the DDE knows to initiate a DPF regen supposedly

http://realoem.com/bmw/showparts.do?...87&hg=13&fg=15

I remember reading there being something different along these lines between US and EU In the diesel tech workbook. Just cant remember. Ill try to find.

Hoooper · 10-15-2013, 04:21 PM

Quote:

Originally Posted by taibanl

I remember reading there being something different along these lines between US and EU In the diesel tech workbook. Just cant remember. Ill try to find.

there is a difference in the systems according to realOEM, but it may be that the euro spec does not have a differential pressure sensor. The link I posted was US spec. Below is euro spec.

http://realoem.com/bmw/showparts.do?...72&hg=18&fg=10

335dFan · 10-15-2013, 08:12 PM

Thanks for this. Knowledge is power (I guess).

taibanl · 10-15-2013, 08:18 PM

Found it (pg 113)

http://prodcds.bmwuniversity.com/lib...erformance.pdf

Euro 335d has backstream pressure sensor UPSTREAM of DPF...

I remembered this because it may have prevented Ron1n's meltdown.

Pierre Louis · 10-16-2013, 04:50 AM

This video has salesmanship all over it.

He makes a few statements that are low on data, stretching the truth, and to my limited knowledge, appear to be false.

One example: at the start of the talk, oil gets degraded by going down in viscosity. Later in the talk, soot makes it "thicker."

Another: long drain intervals are bad if you have EGR putting "soot" into the oil through the combustion chamber. If EGR puts a lot more soot into the oil from the combustion chamber, think of all the soot combustion puts into the oil in the first place! Illogical! Many check their oil periodically for quality and drain intervals and clearly the high end oils recommended can withstand long drain intervals.

Another was where he said that separate combustion process to clear the DPF with some designs causing oil contamination in the engine. This process is far away from the engine and has nothing to do with fuel contamination of the engine oil.

Amsoil makes good products, but this was a sales pitch.

I don't believe this guy is an engineer, and he may not even be a mechanic.

335dFan · 10-16-2013, 06:12 AM

Quote:

Originally Posted by Pierre Louis

This video has salesmanship all over it.

He makes a few statements that are low on data, stretching the truth, and to my limited knowledge, appear to be false.

One example: at the start of the talk, oil gets degraded by going down in viscosity. Later in the talk, soot makes it "thicker."

Another: long drain intervals are bad if you have EGR putting "soot" into the oil through the combustion chamber. If EGR puts a lot more soot into the oil from the combustion chamber, think of all the soot combustion puts into the oil in the first place! Illogical! Many check their oil periodically for quality and drain intervals and clearly the high end oils recommended can withstand long drain intervals.

Another was where he said that separate combustion process to clear the DPF with some designs causing oil contamination in the engine. This process is far away from the engine and has nothing to do with fuel contamination of the engine oil.

Amsoil makes good products, but this was a sales pitch.

I don't believe this guy is an engineer, and he may not even be a mechanic.

I just hate facts getting in the way of a good story.

Just like the US political scene. Whoops.

Puerto Rican 335d · 10-16-2013, 07:35 AM

business like or not at least we or should I say i understand how this DPF works!! yes thre was some sales pitch BUT some truth to it,

Hooper I will confer with Lenny on this when we do the DPF delete in nearby future ok!!

Puerto Rican 335d · 10-16-2013, 08:07 AM

Speaking about Ron1n wtf is he?

Quasimodem · 10-16-2013, 12:55 PM

IMHO, he exaggerates the EGR/soot problem, but it makes sense that there is more soot in recirculated diesel gasses than in petrol gasses.

The real problem is leakdown of diesel through the cylinders since diesel is more persistent than petrol. But then again, diesel is an oil, so presumably adding a little to the oil system wouldn't be so bad.

F32Fleet · 10-16-2013, 01:37 PM

Quote:

Originally Posted by Puerto Rican 335d

Speaking about Ron1n wtf is he?

Good question.

135i_vs_ · 10-16-2013, 05:26 PM

I saw this video the other day...I started to debate if I should be changing my oil every 6k or let the car computer (CBS) tell me, which sort of works out to 11k...

I would like to think the car's sensor is testing the viscosity of the oil by doing a dielectric strength test on it, and it is not just based on driving style, etc.

Pierre Louis · 10-16-2013, 09:39 PM

Quote:

Originally Posted by 135i_vs_

I saw this video the other day...I started to debate if I should be changing my oil every 6k or let the car computer (CBS) tell me, which sort of works out to 11k...

I would like to think the car's sensor is testing the viscosity of the oil by doing a dielectric strength test on it, and it is not just based on driving style, etc.

Dunno.

If it doesn't, it may just be on miles driven (seems to be how mine is). Would then depend on whether it goes through "heavy duty use" or not.

Oil analysis (SOA) done by many online seems to indicate diesels do well with specified oil at extended drain intervals.

Timujin · 10-16-2013, 10:37 PM

Quote:

Originally Posted by Pierre Louis

Dunno.

If it doesn't, it may just be on miles driven (seems to be how mine is). Would then depend on whether it goes through "heavy duty use" or not.

Oil analysis (SOA) done by many online seems to indicate diesels do well with specified oil at extended drain intervals.

You'd be better off changing the fuel filter sooner than later.

10-15-2013, 11:34 AM	#1
Puerto Rican 335d Brigadier General 229 Rep 3,489 Posts Drives: Montego Blue 335d Join Date: Jun 2011 Location: Puerto Rico(Dominican Republic 03/2017) iTrader: (0)	Understanding Diesel DPF Regeneration I came across this and I came to understand this DAMN DPF, here's the link(sorry did not know it was an AMSOIL link until I saw it completely,but to post): __________________ RENNtech Flash(Lenny Wu)/WAGNER IC Enkei Rajin 18"/Execuhitch Hitch/Koni FSD Soft Ride Bike Rack/Brava Synthetic Motor Oil(Made in Puerto Rico)/Meth(in the works)/CBU done w Andrew EGR Race Pipe (whoa! what an animal it is now)
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10-15-2013, 11:56 AM	#2
Quasimodem Colonel 145 Rep 2,383 Posts Drives: 335d Join Date: Oct 2008 Location: California iTrader: (0) Garage List 2009 335d US [0.00]	Great video, do we have the differential pressure sensors in the US 335d? __________________ Speakers: CDT Audio HD-42 comps--front doors (RAAMmat deadened), CDT ES-06 6.5" woofers--kickpanl Pods, Hertz EBX202R dual 8" ported trunk sub. Amps: Phoenix Gold RSd 500.4 (comps & pods). PG RSd 600.1 (sub). Power & Ground: 4AWG Streetwires w/RockFosgt RFDB1 distro blocks. Input: HU lineout--Kicker KISL RCA adapters--RockFosgt RFIT-6 cables--Audiocontrol Matrix--Monster cables--RSd 500.4--lineout Monstr Cabl to RSd 600.1.
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10-15-2013, 12:02 PM	#3
crugeman New Member 2 Rep 19 Posts Drives: 2011 335D Join Date: Dec 2012 Location: DC iTrader: (1)	Great vid man, thanks for posting. Always good to have more information. So it this also a plug for the additive that you use
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10-15-2013, 12:52 PM	#6
Puerto Rican 335d Brigadier General 229 Rep 3,489 Posts Drives: Montego Blue 335d Join Date: Jun 2011 Location: Puerto Rico(Dominican Republic 03/2017) iTrader: (0)	now that i know how it works I will do as I did with my catalic converter on a car i had gut it out hopefully __________________ RENNtech Flash(Lenny Wu)/WAGNER IC Enkei Rajin 18"/Execuhitch Hitch/Koni FSD Soft Ride Bike Rack/Brava Synthetic Motor Oil(Made in Puerto Rico)/Meth(in the works)/CBU done w Andrew EGR Race Pipe (whoa! what an animal it is now)
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10-15-2013, 12:59 PM	#8
Puerto Rican 335d Brigadier General 229 Rep 3,489 Posts Drives: Montego Blue 335d Join Date: Jun 2011 Location: Puerto Rico(Dominican Republic 03/2017) iTrader: (0)	now that i know how it works I will do as I did with my catalic converter on a car i had gut it out hopefully __________________ RENNtech Flash(Lenny Wu)/WAGNER IC Enkei Rajin 18"/Execuhitch Hitch/Koni FSD Soft Ride Bike Rack/Brava Synthetic Motor Oil(Made in Puerto Rico)/Meth(in the works)/CBU done w Andrew EGR Race Pipe (whoa! what an animal it is now)
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10-15-2013, 08:12 PM	#12
335dFan Jumping Jack Flash 321 Rep 1,692 Posts Drives: 2021 X3 M40i Join Date: Nov 2012 Location: California (east of Sacramento) iTrader: (0) Garage List 2021 BMW X3 M40i [0.00] 2017 Toyota Prius [0.00]	Thanks for this. Knowledge is power (I guess). __________________ 2021 X3 M40i: M Sport Differential, Adaptive M Suspension. Previous BMWs: 1971 BMW 2002, 1973 BMW R75/5, and 2011 BMW 335d Previous Other Vehicles: '67 Cougar, '70 911e, '86 Jetta Diesel, '05 and '12 Foresters, et al.
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10-15-2013, 08:18 PM	#13
taibanl Brigadier General 281 Rep 4,121 Posts Drives: BMW Join Date: Sep 2010 Location: NA iTrader: (4)	Found it (pg 113) http://prodcds.bmwuniversity.com/lib...erformance.pdf Euro 335d has backstream pressure sensor UPSTREAM of DPF... I remembered this because it may have prevented Ron1n's meltdown.
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10-16-2013, 04:50 AM	#14
Pierre Louis Captain 158 Rep 866 Posts Drives: 2016 535d Join Date: Apr 2012 Location: Savannah GA iTrader: (0)	This video has salesmanship all over it. He makes a few statements that are low on data, stretching the truth, and to my limited knowledge, appear to be false. One example: at the start of the talk, oil gets degraded by going down in viscosity. Later in the talk, soot makes it "thicker." Another: long drain intervals are bad if you have EGR putting "soot" into the oil through the combustion chamber. If EGR puts a lot more soot into the oil from the combustion chamber, think of all the soot combustion puts into the oil in the first place! Illogical! Many check their oil periodically for quality and drain intervals and clearly the high end oils recommended can withstand long drain intervals. Another was where he said that separate combustion process to clear the DPF with some designs causing oil contamination in the engine. This process is far away from the engine and has nothing to do with fuel contamination of the engine oil. Amsoil makes good products, but this was a sales pitch. I don't believe this guy is an engineer, and he may not even be a mechanic.
	Appreciate 0 Quote

10-16-2013, 07:35 AM	#16
Puerto Rican 335d Brigadier General 229 Rep 3,489 Posts Drives: Montego Blue 335d Join Date: Jun 2011 Location: Puerto Rico(Dominican Republic 03/2017) iTrader: (0)	business like or not at least we or should I say i understand how this DPF works!! yes thre was some sales pitch BUT some truth to it, Hooper I will confer with Lenny on this when we do the DPF delete in nearby future ok!! __________________ RENNtech Flash(Lenny Wu)/WAGNER IC Enkei Rajin 18"/Execuhitch Hitch/Koni FSD Soft Ride Bike Rack/Brava Synthetic Motor Oil(Made in Puerto Rico)/Meth(in the works)/CBU done w Andrew EGR Race Pipe (whoa! what an animal it is now)
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10-16-2013, 08:07 AM	#17
Puerto Rican 335d Brigadier General 229 Rep 3,489 Posts Drives: Montego Blue 335d Join Date: Jun 2011 Location: Puerto Rico(Dominican Republic 03/2017) iTrader: (0)	Speaking about Ron1n wtf is he? __________________ RENNtech Flash(Lenny Wu)/WAGNER IC Enkei Rajin 18"/Execuhitch Hitch/Koni FSD Soft Ride Bike Rack/Brava Synthetic Motor Oil(Made in Puerto Rico)/Meth(in the works)/CBU done w Andrew EGR Race Pipe (whoa! what an animal it is now)
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10-16-2013, 12:55 PM	#18
Quasimodem Colonel 145 Rep 2,383 Posts Drives: 335d Join Date: Oct 2008 Location: California iTrader: (0) Garage List 2009 335d US [0.00]	IMHO, he exaggerates the EGR/soot problem, but it makes sense that there is more soot in recirculated diesel gasses than in petrol gasses. The real problem is leakdown of diesel through the cylinders since diesel is more persistent than petrol. But then again, diesel is an oil, so presumably adding a little to the oil system wouldn't be so bad. __________________ Speakers: CDT Audio HD-42 comps--front doors (RAAMmat deadened), CDT ES-06 6.5" woofers--kickpanl Pods, Hertz EBX202R dual 8" ported trunk sub. Amps: Phoenix Gold RSd 500.4 (comps & pods). PG RSd 600.1 (sub). Power & Ground: 4AWG Streetwires w/RockFosgt RFDB1 distro blocks. Input: HU lineout--Kicker KISL RCA adapters--RockFosgt RFIT-6 cables--Audiocontrol Matrix--Monster cables--RSd 500.4--lineout Monstr Cabl to RSd 600.1.
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10-16-2013, 05:26 PM	#20
135i_vs_ Captain 72 Rep 697 Posts Drives: M5, 135i, 335d, F10 550xi Join Date: Sep 2011 Location: CT iTrader: (0)	I saw this video the other day...I started to debate if I should be changing my oil every 6k or let the car computer (CBS) tell me, which sort of works out to 11k... I would like to think the car's sensor is testing the viscosity of the oil by doing a dielectric strength test on it, and it is not just based on driving style, etc.
	Appreciate 0 Quote