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- Chalkys HSE
- Member Since: 04 Jun 2017
- Location: Yorkshire
- Posts: 339
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- mordred1973
- Member Since: 08 Jan 2019
- Location: Northamptonshire
- Posts: 758
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- Hauser
- Member Since: 31 Jul 2018
- Location: Flintbek
- Posts: 153
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- mordred1973
- Member Since: 08 Jan 2019
- Location: Northamptonshire
- Posts: 758
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- Hauser
- Member Since: 31 Jul 2018
- Location: Flintbek
- Posts: 153
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Chalkys HSE wrote:
Whatever the reason for adopting the RRS Unit it would appear that the issue for the D5 has largely been addressed, For what i have been told by the Manufacturer is the 2018MY vehicle this CAN accept updates as they learnt early on that the sequential application of through the Urea into the DPF of the Diesel Exhaust Fluid only impacted on the fact that the cannister was NOT hot enough "too far away" so the application of cold wet fluid hampered the already existing problem of the fact that there was too much metal pipe between the back of the Turbo housing and that of the DPF Unit, this length of pipe suffered from heat sink in that it struggled to create or carry enough heat to generate an efficient burn, imagine squirting cold wet liquid onto a hot surface, it has a cooling effect and also creates steam... If the DPF fails to re gen due to heat loss it will try again and again until it creates a clean emptying of the can, The opening of the urea to apply fluid into the manifold knocks a certain ammount of miles off the service level indicator. Hence the early service warning, It is this that is at odds with time "Calendar" and distance "miles / KM's"
Fuel in Oil "FIO" or "Oil Dilution" is merely a term that has been applied to something that covers up the fact that the DPF fails to conduct an efficient re-generation of the DPF under normal drive cycle due to inadequate hardware architecture,
This was relayed to me by a senior Engineer at Gaydon and i have no reason to challenge his reasoning or expertise on this, he said to me that when they were told to re jig the manifold and knock a turbo off that they themselves in engineering said it wouldn't work ! and questioned the work already invested in the on going infastructure D4 that they thought was working absolutely bang on and required no messing about with ! The main reason for this was emmisions as it was failing to get inside the current legislation ?
Hey again,
You wrote that one big reason for this issue is the placements of the AdBlue tank (and the turbo), because the fluid would be loosing to much heat on the way to the DPF.
So what exactly does the software update do on MY2018 vehicles to change that physical fact?
(And why does it not work on MY17...?)
Greets,
Hauser
Discovery 5 (MY 2021): HSE, D300, Fuji White
Discovery Sport (MY 2016): HSE, TD4, Firenze Red w. black roof -
- Hauser
- Member Since: 31 Jul 2018
- Location: Flintbek
- Posts: 153
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- mordred1973
- Member Since: 08 Jan 2019
- Location: Northamptonshire
- Posts: 758
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- Chalkys HSE
- Member Since: 04 Jun 2017
- Location: Yorkshire
- Posts: 339
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- mordred1973
- Member Since: 08 Jan 2019
- Location: Northamptonshire
- Posts: 758
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- Chalkys HSE
- Member Since: 04 Jun 2017
- Location: Yorkshire
- Posts: 339
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Hauser wrote:
Chalkys HSE wrote:
Hey again,
You wrote that one big reason for this issue is the placements of the AdBlue tank (and the turbo), because the fluid would be loosing to much heat on the way to the DPF.
So what exactly does the software update do on MY2018 vehicles to change that physical fact?
(And why does it not work on MY17...?)
Greets,
Hauser
No, what i wrote is that the SDV6 in the D4 had 2 spinny things, When the D5 was intended for market they took the smaller one and the mid sized one and replaced both with one bigger one, This it was presumed would aid it's ability to get it under a certain criteria for release with regards emissions.
The adblu tank has nothing to do with anything ? it is the placement of the nozzle that squirts the fluid into the hot bit that is in the wrong place, Having only one turbo means that there isn't two and thus heat is lost due to space created and the fact the bigger turbo isn't getting as hot resulting in the pipe loosig heat through the transfer of increased pipe length.
The other relates to the sequential release of the fluid into the sytem to neutralise the harmful chemicals that are located in the DPF, this should reach 600 degrees, but it isn't, theres a pipe that looses heat and the cold wet fluid hampers heat by its very virtue of being just that ! once the fluid is released it knocks a certain ammount of miles off the service, so lets say for arguments sake and to keep it simple it looses 100 miles every time it squirts out some wet stuff, if it tries to regenerate 10 times in a 135 mile journey your service counter will drop by one thousand 1,000 miles. ? so 10 times activated minus the 100 miles lost every time it opens is 10 multiplied 100 = 1,000
The sodtware update was to re write the algorytmn that some one wrote to the vehicle telling it that if it travells fro Yorkshire to spain "KNOCK 2,000 MILES OFF THE INDICATOR.
So, if it is displaying 7,500 miles to service when i set off and drive 2,000 it should read 5,500
If the vehicle sits on my drive for 3 months and does not move and it displays 7,500 miles in January you should expect that 3 months later it might read 4,500 as every calendar month it should drop a thousand or so,
Also as discussed every time the nozzle squirts fluid it knocks a certain number of miles off, unfortunately i do not know what this figure is ? and neither do they, the reason for updating the system alledgedly ? to tell the 3 parameters, Adblu nozzle - calendar - miles to STOP conflicting with each other as the readings were wrong.
2017 MY D5 HSE 3.0 Td6 Corris Grey, Side steps, roof rails, -
- Chalkys HSE
- Member Since: 04 Jun 2017
- Location: Yorkshire
- Posts: 339
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- Chalkys HSE
- Member Since: 04 Jun 2017
- Location: Yorkshire
- Posts: 339
-
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- mordred1973
- Member Since: 08 Jan 2019
- Location: Northamptonshire
- Posts: 758
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- Chalkys HSE
- Member Since: 04 Jun 2017
- Location: Yorkshire
- Posts: 339
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- mordred1973
- Member Since: 08 Jan 2019
- Location: Northamptonshire
- Posts: 758
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