 | Home > Puma (Tdci) > DPF filter |
 
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| K9F Member Since: 12 Nov 2009 Location: Bournemouth Posts: 9610   
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I thought SA Pumas didn't have DPFs? You should theoreticaolly be able to remove it and just replace the ECU for a non-DPF one.
 If you go through life with your head in the sand....all people will see is an ar5e!!
Treat every day as if it is your last....one day you will be right!! |
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21st Sep 2014 4:34pm |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2638  
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That's not an SA Puma
But yes, the Africa Pumas do not have DPF, no need to worry about these. Also, a diesel will NOT reach operating temperature by just idling. If it does, there is something wrong with it --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged 
Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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21st Sep 2014 7:44pm |
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| martinfiattech Member Since: 13 Nov 2013 Location: leicester Posts: 422 
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You can remove the dpf and have the ecu reprogramed to suit (nice time for a performance up grade).
The engine needs to be at normal operating temperature so the regen process can be carried out. The engine ecu will set the injection cycle so it carries out a number of post injections. I.e. when on the exhaust stroke the injector / injectors will be triggered to send atomised fuel towards the dpf, thus increasing the dpf temp and in turn a spontaneous regeneration will begin. The ecu will monitor the dpf internal pressures and temps which can easily reach 350 to 450 C, or more depending on type. Once the correct temp has been reached any soot or particles will be burnt away, this at some point will leave an ash residue within the dpf , so it`s important to use a low ash engine oil and good fuel. Due to the temperature required the engine needs to run at a given speed for a given time, you don`t want all that heat sitting in your turbo. Also while under regen conditions some vehicles lower boost pressures along with the egr valve being switched off, not to mention the fact your oil is being very, very slightly diluted with fresh unburnt diesel, this is why some vehicles have service warning lights. So you can have prior warning before your oil gets too thin and burns your crank bearings out !!. At some point no matter what or how many regens are carried out the dpf lattice will become saturated with ash, this will mean either a new one or sending the whole lot away for specialist cleaning. A spontaneous regen managed by the ecu is a lot kinder to your dpf than a forced regen carried out by your dealer / garage. When we carry out forced regens at work, the engine is managed by the diagnostic tool. In the case of fiat diesel engines, the coolant must be over 80 c, the vehicle outside, bonnet open, not parked on grass or tarmac (slightly melted the road out side work one sunny day oopps )  . We also take a fire extuinguisher, just in case.
The engine is the held at 2000 rpm for 30 seconds then to 3000 to 3500 rpm for as long as 15 mins. On one motor home it took 5 goes and just over an hour to get it thru, but did save the owner over £2000 on a new one . Progress who needs it !! Excuse the spelling I`am better with spanners and wires. |
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21st Sep 2014 8:28pm |
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| Macpaul Member Since: 25 Mar 2013 Location: SW Surrey Posts: 439 
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What a brilliant explanation. Thank you. 2003 Td5 110 Hardtop
Now a 2013 110 USW too. |
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21st Sep 2014 9:47pm |
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| Smurph Member Since: 29 May 2013 Location: Zimbabwe Posts: 27 
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Yes, thanks martinfiattech.
Naks is correct the vehicle is not an SA vehicle but it is an "african" vehicle imported new by the Land Rover dealer in Harare. I was told it would not have a DPF filter but I think it does ( unless the canister on the exhaust downpipe is empty?) On a recent trip the vehicle was stationary in camp for 10 days, however I idled it for 30 minutes everyday to charge batteries for a fridge. No warning lights appeared on the dash, however when we moved away there was a cloud of dark black smoke from the exhaust for about 10 minutes. It didn't seem to affect the vehicle performance and cleared completely. Was this the DPF burning off accumulated soot? |
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22nd Sep 2014 8:56am |
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| Juhulia Member Since: 10 Jul 2013 Location: Dresden Posts: 17
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I suppose a DPF won't let any smoke out.
Are there any control lamps for the DPF on your control panel? If not, don't worry about a DPF in your car, man. |
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22nd Sep 2014 7:33pm |
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