User Tag List

Thanks Thanks:  0
Likes Likes:  0
Page 1 of 2 12 LastLast
Results 1 to 10 of 13

Thread: dpf

  1. #1
    Regular Member
    Join Date
    Nov 2010
    Location
    doncaster
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default dpf

    i have heard conflicting storys how a dpf regen is carried out any advice on how to do it

  2. #2
    Regular Member barney490's Avatar
    Join Date
    Dec 2009
    Location
    PRESTON
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    A static regen can only be carried out by using tech 2 or similar, you cannot make the car do a regen by yourself. Best thing is to keep an eye on the current fuel consumption as you drive, if it drops to silly levels or says its using 1.0 gall per hour at idle, you can bet it's doing a regen. If this happens, try to keep the car going on a fast run till the fuel consumption returns to normal, this indicates the regen is complete.

    Basically what is happening during this process, is that the engine's computer has decided from the information that it receives from the sensors installed in the exhaust, that the DPF has filled up past its acceptable limit. The computer then closes the EGR (exhaust gas recirculation) to help get exhaust gas temps higher and also injects a small shot of fuel into the cylinders when the exhaust valves are open, hence increase in fuel consumption. The raised exhaust temps, up to 600 degrees Celsius, and the small amount of fuel then burn out the particulate (soot) that the DPF has collected since its last regen.
    Once regeneration starts the ECU then needs to see the correct value readings from the pressure sensors in the exhaust that the filter is flowing an acceptable limit again, it ends the regen cycle. It is not good practice to switch off any car whilst the regen process is running it’s cycle. Typically if this happens, the car will attempt another regen the next time the engine is started and reaches temperature. Problems arise when after several interrupted regen cycles, the car will no longer attempt another, causing the DPF to block, bringing on the EML and entering limp mode.
    Last edited by barney490; 17th May 2011 at 21:47. Reason: added info

  3. #3
    Regular Member
    Join Date
    Nov 2010
    Location
    doncaster
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    doesnt the car do a regen itself at certain revs or speed or summit

  4. #4
    Regular Member bangty 1's Avatar
    Join Date
    Sep 2010
    Location
    in a box
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    Quote Originally Posted by fjaimo10 View Post
    doesnt the car do a regen itself at certain revs or speed or summit
    nope

  5. #5
    Regular Member
    Join Date
    Nov 2010
    Location
    doncaster
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    so what is barney on about then

  6. #6
    Full Member Big Sig's Avatar
    Join Date
    Aug 2006
    Location
    Is a very naughty boy
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    Quote Originally Posted by fjaimo10 View Post
    doesnt the car do a regen itself at certain revs or speed or summit
    Quote Originally Posted by bangty 1 View Post
    nope
    Yes it does, it needs to meet a few conditions. Revs, temperature and duration iirc.
    Now I need a turbo to keep up!

  7. #7
    Regular Member badback's Avatar
    Join Date
    Jan 2009
    Location
    Runcorn
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    The car will do a regen if needed automatically whilst driving, but you can only force it to do a regen with Tech 2 etc.

  8. #8
    Regular Member bangty 1's Avatar
    Join Date
    Sep 2010
    Location
    in a box
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    Quote Originally Posted by fjaimo10 View Post
    so what is barney on about then
    what he says is right you cant do a regen yourself only with a computer vx will charge you £60 to do one but you can sit there all day at 2000/3000/4000 rpm 20/30/40 mph and it wont do one its all do do with computer in the car (ecu id say) that makes it regen every 1000miles or something and the car will change injector timeing and pump extra diesel in the pistons to burn the soot out the dpf but what barney has sed is all right good write up id say even i understand it and im dum really dum lol

    sig would it not take ages to find out what revs and ect to do it??.........but i dint think you could do a regen with no tech 2 as i got told on here lol........but learn something new everyday

  9. #9
    Regular Member
    Join Date
    Nov 2010
    Location
    doncaster
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    oh thanks for all that just a query no probs with it as yet but is it worth cleaning out the egr manully every now and again worth it or not

  10. #10
    Regular Member bangty 1's Avatar
    Join Date
    Sep 2010
    Location
    in a box
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    if you do loads of miles then no if you a stop and start man id say yes as my car was fine over 100k with no dpf props i had it 5k later (dono how many really be about that) and dpf was fubar so long drive person forget it stop and start person it would be good to clean now and then

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Visitors found this page by searching for:

Nobody landed on this page from a search engine, yet!

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •