Advertise on fullfatrr.com »

Home > Technical (L405) > I'm now a Regeneration trainee nerd--lol
Post Reply  Down to end
Page 26 of 26 <123 ... 242526
Print this entire topic · 
SootScout



Member Since: 08 Oct 2024
Location: London
Posts: 1

United Kingdom 
The DPF is not fit for purpose on Land Rover Discovery Sport

Hi all,

Another DPF nerd here.

While I am not a Range Rover owner, the DPF on my Land Rover Discovery Sport 2017 got blocked and had to be replaced, a problem that seems to be affecting many of us.

I found out there was a class action lawsuit against Land Rover for faulty DPF construction, and I wanted to get proof of whether my car was also affected.

(There is further information about the fault presented in this document).

Using the Car Scanner app, I recorded over 200 trips in and outside of the UK and put all the recordings up on a website: https://sootscout.com

It is still a work in progress (I need to do further detailed analysis on my trips); however, I believe it already provides valuable insights for anyone who wants to understand how the DPF works.

I've attached a photo of the first recorded trip, which immediately showed that the DPF could not regenerate itself during normal driving conditions on the motorway. Notice how the soot mass keeps increasing despite driving on the motorway. Only an active regeneration at the end of the trip could clear the soot.



In contrast, here is another trip recorded on the German Autobahn with speeds well exceeding 80 mph. Interestingly, the DPF is working as designed here.



Could this mean that the "faulty" DPFs were designed to be used outside the UK, where speed limits are higher...?

You can explore the data further on the website.

If you are affected by the same issue, I hope you find the information on the site useful.

Cheers

Post #701763 8th Oct 2024 10:41am
View user's profile Send private message View poster's gallery Reply with quote
Kot



Member Since: 10 Mar 2021
Location: broadland
Posts: 1177

United Kingdom 

The whole idea of DPF regeneration is explained in the WS manual below, and your first graph shows passive regeneration over 250C at limited events not easy to achieve constant PRegen below 70mph. As soot load/mileage increases, you meet the trigger point for an active Regeneration, which could be average mileage of your ARegens or grams of soot limit is achieved.
https://www.fullfatrr.com/gallery/albums/u...ration.pdf

The 2nd graph shows passive Regen all journey, as you are exceeding 250C, and averaging 300 to 500C so passive Regen is working well, no need for Active Regen to start.

So both graphs actually show your Regen system's algorithm is working as design.

However the mechanical design could be better, the architecture is not helping and is contributing to fuel dilution of the oil. Below is a JLR memo on this matter.https://www.fullfatrr.com/gallery/albums/u...lained.pdf

Point 7 is where they say "its your driving style Sir" 2018 SE SDV8 4.4 Byron Blue

Post #701794 8th Oct 2024 5:14pm
View user's profile Send private message View poster's gallery Post Reply
Post Reply  Back to top
Page 26 of 26 <123 ... 242526
All times are GMT

Jump to  
Previous Topic | Next Topic >
Posting Rules
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



Site Copyright © 2006-2024 Futuranet Ltd & Martin Lewis
fullfatrr.com RSS Feed - All Forums


Switch to Mobile site