In the light of the VW diesel scandal in the USA, I had some thoughts about diesel tuning. I think that it may not be easy to get the power, performance and economy combination that is wanted AND get the vehicle to comply with the pollution regulations. We or at least I and some right minded people do want pollution reduced and leave a better world for our kids and others. At least VW has not been able to do it with their engines that are involved. 11 million world wide at last count Are there other manufacturers too ?
So what can we deduce from this. Is it likely that some small scale chip modifier in Aus can get the R & D done to do it better than the manufacturer and glibly say it complies with the required pollution standards. Or is it that some people do not care about this side of it? The pollution regs are just for dummies and who cares
Jaahn
exa41 said
04:54 PM Sep 24, 2015
our pollution laws are pretty slack when compared to other countries anyway, who knows what is legal and what is not ,
03_Troopy said
05:36 PM Sep 24, 2015
But isn't the VW problem that the emission controls were circumvented except while under test? Chipping with and altering ECU programmes doesn't mean that's also what they are doing. It's more about remapping fuel programming to deliver fuel more efficiently for maximum power and economy.
Aus-Kiwi said
09:18 PM Sep 24, 2015
As strange as it may seem .. It's more about beating / breaking US EPA law than emissions that'll get them ...
They WILL be made examples of going by previous EPA findings ..
03_Troopy said
12:06 PM Sep 25, 2015
Aus-Kiwi wrote:
As strange as it may seem .. It's more about beating / breaking US EPA law than emissions that'll get them ... They WILL be made examples of going by previous EPA findings ..
Yes, but that's not really what the topic is about is it?
Jaahn said
02:01 PM Sep 25, 2015
03_Troopy wrote:
But isn't the VW problem that the emission controls were circumvented except while under test? Chipping with and altering ECU programmes doesn't mean that's also what they are doing. It's more about remapping fuel programming to deliver fuel more efficiently for maximum power and economy.
Hi
As far as I can read there are no emission controls on these VW engines. Perhaps some EGR. The emissions of NOX are controlled by the mapping of the fuel timing and quantity that is adjusted to give less emissions or more power and economy. Hence the need to sense that a test is being done so the mapping can be adjusted.
That mapping adjustment is just what the aftermarket chippers do here to your diesel. My point being that it probably affects the pollution out put of the 4WD engines that are modified even though it is claimed it does not
03_Troopy said
06:17 PM Sep 25, 2015
yes, maybe. But all the reports I read say "switched emission controls off". the aftermarket chipping may or may not cause more pollutants, but is there any law to say you can't remap fuel timing control?
Baz421 said
07:17 PM Sep 25, 2015
From my limited knowledge of this incident it seems that all VW did was modify software to comply to get approval, and then to not comply when in the market place ie in service testing is quite different from initial testing when engine is introduced to USA market.
May be wrong again!
Aus-Kiwi said
07:27 PM Sep 25, 2015
Yep .. My guess as said they limited or isolated the EGR. Fine tuning can co either way EPA wise.. Our emissions are not as tight as Euro's new Exhaust NOS stds .. I often wandered how some Euro engines got away with cleaning partical filter like Isuzu' Fuso have to..
Most tweaking is adding more boost.. Which doesn't necessary mean higher emissions ... Btw BMW are suspect of the same ..
-- Edited by Aus-Kiwi on Friday 25th of September 2015 07:28:40 PM
03_Troopy said
01:04 PM Sep 26, 2015
Baz421 wrote:
From my limited knowledge of this incident it seems that all VW did was modify software to comply to get approval, and then to not comply when in the market place ie in service testing is quite different from initial testing when engine is introduced to USA market.
May be wrong again!
Yes, but how was the software modified? what were the effects of modifying it? ie what was changed from the normal running system? is what the topic is about.
Aus-Kiwi said
10:13 PM Sep 26, 2015
03_Troopy wrote:
Baz421 wrote:
From my limited knowledge of this incident it seems that all VW did was modify software to comply to get approval, and then to not comply when in the market place ie in service testing is quite different from initial testing when engine is introduced to USA market.
May be wrong again!
Yes, but how was the software modified? what were the effects of modifying it? ie what was changed from the normal running system? is what the topic is about.
EGR .. I suspect ? I lets inert gases back into combustion chamber, controlling heat . Longer term it tends to block up with soot .. Burning Pistons .. As what happens to late model Jap motors .. Especially Nissan..
-- Edited by Aus-Kiwi on Saturday 26th of September 2015 10:15:16 PM
-- Edited by Aus-Kiwi on Saturday 26th of September 2015 10:19:10 PM
patrol03 said
08:53 AM Sep 27, 2015
I think Nissan 3L engine is a Renault A.K
Baz421 said
10:36 AM Sep 27, 2015
03_Troopy wrote:
Baz421 wrote:
From my limited knowledge of this incident it seems that all VW did was modify software to comply to get approval, and then to not comply when in the market place ie in service testing is quite different from initial testing when engine is introduced to USA market.
May be wrong again!
Yes, but how was the software modified? what were the effects of modifying it? ie what was changed from the normal running system? is what the topic is about.
Bob
From one of the original reports (and from experience they are often the best for info before PR / legal guys take over) it stated that the said software recognised the difference between being "mobile on the road" and being run stationary in a scenario that resembled being "tested or used" for other than normal use.
It would not be hard to incorporate this in software ie GPS/motion sensor/forward infra red/anti collision system to name a few common ones.
I learnt years ago to trust some of the first news reports before they have time to be manipulated and cleaned for public consumption.
03_Troopy said
11:32 AM Sep 27, 2015
Baz421 wrote:
03_Troopy wrote:
Baz421 wrote:
From my limited knowledge of this incident it seems that all VW did was modify software to comply to get approval, and then to not comply when in the market place ie in service testing is quite different from initial testing when engine is introduced to USA market.
May be wrong again!
Yes, but how was the software modified? what were the effects of modifying it? ie what was changed from the normal running system? is what the topic is about.
Bob
From one of the original reports (and from experience they are often the best for info before PR / legal guys take over) it stated that the said software recognised the difference between being "mobile on the road" and being run stationary in a scenario that resembled being "tested or used" for other than normal use.
It would not be hard to incorporate this in software ie GPS/motion sensor/forward infra red/anti collision system to name a few common ones.
I learnt years ago to trust some of the first news reports before they have time to be manipulated and cleaned for public consumption.
Yes Baz, but that only tells you when the software modified the anti emissions controls, not how it modified them. There's nothing very technical about detecting whether the system is under test or not.
Hi
In the light of the VW diesel scandal in the USA, I had some thoughts about diesel tuning. I think that it may not be easy to get the power, performance and economy combination that is wanted AND get the vehicle to comply with the pollution regulations. We or at least I and some right minded people do want pollution reduced and leave a better world for our kids and others. At least VW has not been able to do it with their engines that are involved. 11 million world wide at last count
Are there other manufacturers too ?
So what can we deduce from this. Is it likely that some small scale chip modifier in Aus can get the R & D done to do it better than the manufacturer and glibly say it complies with the required pollution standards.
Or is it that some people do not care about this side of it? The pollution regs are just for dummies and who cares 
Jaahn
They WILL be made examples of going by previous EPA findings ..
Yes, but that's not really what the topic is about is it?
Hi
As far as I can read there are no emission controls on these VW engines. Perhaps some EGR. The emissions of NOX are controlled by the mapping of the fuel timing and quantity that is adjusted to give less emissions or more power and economy. Hence the need to sense that a test is being done so the mapping can be adjusted.
That mapping adjustment is just what the aftermarket chippers do here to your diesel. My point being that it probably affects the pollution out put of the 4WD engines that are modified even though it is claimed it does not
From my limited knowledge of this incident it seems that all VW did was modify software to comply to get approval, and then to not comply when in the market place ie in service testing is quite different from initial testing when engine is introduced to USA market.
May be wrong again!
Yep .. My guess as said they limited or isolated the EGR. Fine tuning can co either way EPA wise..
Our emissions are not as tight as Euro's new Exhaust NOS stds .. I often wandered how some Euro engines got away with cleaning partical filter like Isuzu' Fuso have to..
Most tweaking is adding more boost.. Which doesn't necessary mean higher emissions ...
Btw BMW are suspect of the same ..
-- Edited by Aus-Kiwi on Friday 25th of September 2015 07:28:40 PM
Yes, but how was the software modified? what were the effects of modifying it? ie what was changed from the normal running system? is what the topic is about.
EGR .. I suspect ? I lets inert gases back into combustion chamber, controlling heat . Longer term it tends to block up with soot .. Burning Pistons .. As what happens to late model Jap motors .. Especially Nissan..
http://4x4earth.com/forum/index.php?threads/3-ltr-nissan-diesel-problems-resolved.4787/
-- Edited by Aus-Kiwi on Saturday 26th of September 2015 10:15:16 PM
-- Edited by Aus-Kiwi on Saturday 26th of September 2015 10:19:10 PM
Bob
From one of the original reports (and from experience they are often the best for info before PR / legal guys take over) it stated that the said software recognised the difference between being "mobile on the road" and being run stationary in a scenario that resembled being "tested or used" for other than normal use.
It would not be hard to incorporate this in software ie GPS/motion sensor/forward infra red/anti collision system to name a few common ones.
I learnt years ago to trust some of the first news reports before they have time to be manipulated and cleaned for public consumption.
Yes Baz, but that only tells you when the software modified the anti emissions controls, not how it modified them. There's nothing very technical about detecting whether the system is under test or not.