Thread: EGR delete.

I agree with your comments Mick.

The inconvenient truth is your Defender and even my D3 can legally produce 3-4 times the Nox emission levels of the cars being produced today. As long as we keep it stock standard we are legally OK but still doing harm.

The Dieselgate scandal only unearthed a dirty secret in the industry - one which anyone who drives a diesel needs to recognise.

There is no moral high ground here - so we just need to own it.

I won’t be getting rid of mine - it is just a reality we live with. The planet is doomed as long as humans inhabit it anyway.

Originally Posted by DiscoMick

If you don't mind your dirty emissions helping to kill about 1000 Aussies a year, then go ahead and delete it.

I didn’t realize EGR’s cleaned up emissions 100%.....

recall a mate saying EGR’s only recycle a small percentage of the exhaust and doubts it 100% efficient.

Originally Posted by W&KO

I didn’t realize EGR’s cleaned up emissions 100%.....

recall a mate saying EGR’s only recycle a small percentage of the exhaust and doubts it 100% efficient.

Not 100% - just enough to get back below whatever emission standard applied at the time of release.

But even as little as 5% recirculation can remove 25%-30% of Nox levels when the engine is under high loads.

So even with or without an EGR, diesels are still pumping out particulates and carcinogenic Nox emissions.

The downside of EGR though is increased fuel consumption and decreased engine life. Everything is a trade off with one benefit creating new problems for the environment.

Remove harmful Nox but then still contribute to wasting resources.

No win win here no matter how you look at it.

Mick’s point though is removing is illegal and the authorities are wising up to this.

....or let me put it another way - I would not be admitting to making an illegal modification on a public forum in today’s politically over correct and aggressive protesting over anything with a cause.

Big Brother is watching.

Wait till you see the emissions on a vehicle doing a DPF burn.....

on some vehicles, if they start using oil or you put the wrong oil in them or the DPF gets contaminated the emissions are sufficiently bad during a burn off to make the pollution they create worse than if they had not been in the system in the first place.

With EGR eqquiped vehicles in some instances the EGR remaining open means you never get to a clean burn state in the combustion chamber so the engine is running nearly constantly in a pyrolytic condition which means lots of heat (black smoke) and no real extra push.

And then you have to factor in all the extra emissions caused by a poorly running engine thats basically ground itself out of tolerance by consuming its own abrasive exhaust particulates.


my 2 cents are on in place of the cheap ass short life solutions presented and implemented the system should be scrapped then replaced with something developed along the lines of running the engine with near perfect stoichiometric ratio by means of intake butterflys, Variable AR turbos and Exhaust O2 sensors mapping in the fuel to suit the power demand with a proper Cat in the exhaust. The fact that it would make for a somewhat laggy response to loud pedal application and a slightly reduced overall Max HP per L of engine capacity compared with whats on offer today (it would still be better than the old mechanicals I prefer) should simply be stuffed into the category of "you want a cleaner more efficient engine this is what it looks like, this is what you have to sacrifice to get it and yes, you have to pay for it.

Originally Posted by DiscoDB

Not 100% - just enough to get back below whatever emission standard applied at the time of release.

But even as little as 5% recirculation can remove 25%-30% of Nox levels when the engine is under high loads.

So even with or without an EGR, diesels are still pumping out particulates and carcinogenic Nox emissions.

The downside of EGR though is increased fuel consumption and decreased engine life. Everything is a trade off with one benefit creating new problems for the environment.

Remove harmful Nox but then still contribute to wasting resources.

No win win here no matter how you look at it.

Mick’s point though is removing is illegal and the authorities are wising up to this.

EGR doesn’t function at high loads.
Once your essentially off idle it closes, opening at lower to zero loads and coasting.

Originally Posted by Tombie

EGR doesn’t function at high loads.
Once your essentially off idle it closes, opening at lower to zero loads and coasting.

Which just shows the engineers have been fudging the EGR systems just to meet emission testing rules for a long time. VW was just caught at this.

A proper functioning EGR though is very effective at reducing Nox levels - but it comes at a cost.

http://rationalpublication.com/admin...s/7/95_pdf.pdf

Originally Posted by DiscoDB

Now that is an inconvenient truth.

The truth is vehicle emissions are responsible for more deaths per year than car accidents, and diesels are the worst offenders.

It is this realisation that will see the death of the diesel - just a matter of time now.

So when are you getting rid of the the Defender Mick?

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