Talk:Diesel particulate filter/Archive 1

Don't Sign Articles
Hi Adam, welcome to wikipedia. Don't sign your articles. Instead, sign up for an account, and then other editors can see the articles you wrote and/or contributed to. Happy editing.TheRingess 23:36, 28 November 2005 (UTC)

First usage of a particle filter (as standard) in cars
1985 Mercedes Benz introduced a particle filter in the 300 SDL (1985-1988)
 * http://www.daimlerchrysler.com/dccom/0,,0-5-7153-1-113957-1-0-0-0-0-0-3882-7145-0-0-0-0-0-0-1,00.html
 * http://de.wikipedia.org/wiki/Partikelfilter#Geschichte

Misc

 * I have a huge amount of information that I plan on posting here, but I don't be able to do it properly (formatting, etc.) for at least a week. UrbanTerrorist 22:21, 9 October 2005 (UTC)
 * Just noticed that I wasn't thinking straight, and that I'm almost head down on the KB. Will try to get something proper here tomorrow. UrbanTerrorist 04:00, 16 October 2005 (UTC)
 * Ugh - if someone wants my cold they can have it - will try to get back to this later when I'm human. UrbanTerrorist 01:45, 19 October 2005 (UTC)

History of merging
On 18 February 2006 I merged DPF and Dpf and Particle filter (automotive) into Diesel Particulate Filter. Anthony Appleyard 08:23, 19 February 2006 (UTC)

Ohmigawd
OK, I agree about the merge, but now the article doesn't make any sense. I've been sick most of the last two months (can't wait for winter to die) so I haven't been in recently. It's too late to do anything tonight, will try tomorrow. UrbanTerrorist 02:31, 18 March 2006 (UTC)

How about the title in lower case?
Isn't it more logical the article to be named "Diesel particulate filter" instead of "Diesel Particulate Filter"? Is is a normal word, not a trademark. --NaBUru38 22:37, 27 May 2006 (UTC)

Various issues
Well, I'm feeling a lot better now, so I'm doing a complete re-write of the article. It's gotten to be a horrid mess with all of the edits, so I'm going to beaten it into shape - and incidentily correct some of the falacies that have appeared. I suspect this will not please everyone, however as someone who works in the industry, and has done a lot of design work for installing these things on engines and vehicles I think I'm the best choice - and yes, you're right, there's no conceit in my family, I have it all. UrbanTerrorist 15:42, 23 July 2006 (UTC)


 * OK - it's done - everyone please check the spelling, grammar, etc. UrbanTerrorist 19:02, 23 July 2006 (UTC)

Well it was done
And thanks to NaBUru38 for fixing it up a bit, however I missed a few things - will try and get them in tomorrow. UrbanTerrorist 03:36, 26 July 2006 (UTC)

Fuel-bourne Sulfur
My understanding is that the main detriment of (and primary/initial reason for reduction of) fuel-borne sulfur is that sulfur is known to contribute to particulate formation during the combustion process, rather than interference with any post-combustion catalytic DPF regeneration.

Just read an article suggesting that <15ppm sulfur is required for DPFs, which is not readily available (from a global perspective). Thus the nominal limits of 500ppm and 50ppm used in many places would imply that the purpose of these directives is to firstly reduce diesel particulate formation. The use of DPFs will obviously not become significant until ultra-low sulfur diesel becomes mainstream. Jonathan 00:59, 19 September 2006 (UTC)

Diesel Oxidizing Catalyst vs. Diesel Particulate Filter
When one searches for Diesel Oxidizing Catalyst they are redirected to this article. I think that this needs to be addressed being as they are two different things.
 * You are correct. I'll split them some time in the next month, after I've written a DOC article. UrbanTerrorist (talk) 05:02, 22 September 2011 (UTC)

Temperature that Regeneration Begins to Take Place
I operate a lab whose research focuses on Silicon Carbide DPF's, we generally see regeneration begin to occur at 500*C, not the hotter temperature of 600*C as stated in the article, anyone else have similar data/consensus? Waterppk 15:51, 2 July 2007 (UTC)


 * I missed this when it was first posted. Regeneration temperature is dependent upon the fuel composition. The place I was working at did experiments with fuels with different sulfur levels. The higher the sulfur level, the higher the regeneration temperature. Our assumption was that other differences in the fuel would also affect Regen temperatures, but we didn't have the time or money to investigate that. Sulfur was our main target because we were working on Catalyzed Diesel Particulate Filters for Urban Bus use. This was in the late 90's. UrbanTerrorist (talk) 19:53, 5 October 2011 (UTC)

European regulations and various
There are no EU regulations coming into effect in 2007, neither for passenger cars nor for heavy trucks. Filters are not expected to be necessary on heavy trucks until the introduction of Euro.VI regulations. I am a new contributor and have perhaps breeched etiquette by making the change directly in the article. I wasn't expecting the change to show up until some sort of review was performed.

Incidentally, to avoid confusion, arabic numerals designate EU emissions levels for cars: Euro.4; Euro.5 and roman numerals designate emission levels for heavy duty vehicles: Euro.IV; Euro.V, etc.

A DPF is indeed sensitive to fuel sulfur content.

Filter Life
Can anyone help me with starting a section for Filter life / maintenance / up time? I am trying to gather information of the life of each type of filter. What needs to be done from maintenance, and the time involved. This is what I have found so far.

Filter Life:

Paper filter: Need to be changed every 4-6 hours.

Cordierite: Could not find an estimate, but found statements of less than SiC, can anyone help on this one?

SiC: About 2,000 Hours to cleaning (dependant on conditions) and 5 years to be replaced.

Metal Fiber: About 2000 Hrs to cleaning (dependant on conditions), never needs to be replaced.

Cleaning / Maintenance:

Cordierite, and SiC: Need to be put into an oven where they are heated and blown clean. This process can take 8-12 hours. The ovens are specifically built for this application.

Metal Fiber: Need to spray the filter down with any high pressure washer for 1/2 hour, then let air dry for 2 hours.

Also Metal fiber flow through filters = Sintered metal filter, correct?

--Dru 82 (talk) 18:57, 20 February 2009 (UTC)

Cordierite Diesel Particulate Filter pictures
I can add some more pictures of the DPF 7.8 Cordierite Diesel Particulate Filter if anyone thinks it's necessary. Kind of looks like a Flame thrower from a sci-fi movie. So if anyone wants more loaded on say something. I can put up a 3-4 picture gallery so viewers can get a better idea of the whole thing --Dana60Cummins (talk) 22:23, 23 August 2009 (UTC)

Not always available?
I want a list of the currently produced diesel automobiles which aren't available with a diesel particulate filter. --84.62.213.156 (talk) 20:18, 6 December 2009 (UTC)


 * If you are speaking of cars and trucks. Nothing in the USA since 2007 switch.--Dana60Cummins (talk) 21:56, 6 December 2009 (UTC)