Utility (residual) EGR valve

[lukemon79]

Hello to all! I have a seat leon 2.0 tdi bkd 140 hp 2006. A year ago you broke off the egr, and I replaced it. On the net I read that has more? a function. In addition to the reasons ecologists, to recirculate the exhaust gas, is also serving in the phase of the shutdown of the engine, for "smother" with air rich in CO2, avoiding in this way that the machine turns off "knee-jerk" (which happened to me when the same valve is cracked), going to damage the flywheel (in the long term).
That said, my question ?: going to delete the egr via the ecu, this functionality? is preserved? Why? this ? there? that inhibits me from closing it.

[danny677]

When you designed a car nothing, or almost nothing is left to chance. The egr in general, all the close reasons? if you go to remove an intake manifold already? after 10 thousand km to see the crap that we're inside.
On the tdi pump injector, the egr ? also part of the reason for the various tremors and imbalance to a minimum when the engine is warm, usually, when closed electronically, and reduce or disappear.
The flywheel the break if you throw already? the right foot low-speed with high gears not with a simple turning off of the engine.
However, we have not had the pleasure to meet you in the breakfast area presentations eh :eek:

[legendaryslave]

you are confusing the valve antismortamento with the egr and says danny677 However, we have not had the pleasure to meet you in the appropriate areapresentazioni eh '

[MultiBravo]

The valve that prevents the jolt in the process of shutting down ? the butterfly valve in the intake that shutting the power off is "sweet"..

[legendaryslave]

The valve that prevents the jolt in the process of shutting down ? the butterfly valve in the intake that shutting the power off is "sweet"..
precisely the valve antismortamento

[msport (exil77grande)]

lukemon79 I invite you to introduce yourself in the appropriate section in full and read the rules.

[lukemon79]

lukemon79 I invite you to introduce yourself in the appropriate section in full and read the rules.
The presentation is made. However, you are right, in fact, to me, they were broken, consequently, both the egr and the throttle body... Which then are attached to each other.
Then: who has plugged the egr has noticed the time in going to the right temperature? Or are cos? slight as to be imperceptible (the differences)?

[lukemon79]

I introduced myself, and I have read of the regulation.

[mikyrace82]

The presentation is made. However, you are right, in fact, to me, they were broken, consequently, both the egr and the throttle body... Which then are attached to each other.
Then: who has plugged the egr has noticed the time in going to the right temperature? Or are cos? slight as to be imperceptible (the differences)?

even if the engine would take 5 minutes in the pi? to warm up, the closing of the egr port only benefits.

[lukemon79]

[Xtreme0303]

To me it warms up a bit after but nothing earth-shattering, to me, has smeared across the suction 25000km with a 1.3 mjt then I take it always a priori

[MultiBravo]

It is said we put more? to heat up even if the combustion ? pi? hot without recycling..
For?, probably, the combustion ir? hot, but the efficiency does not compensate for the greater heat input resulting from the reimissione of the hot gases in the combustion chamber..
And for last, the cooling of the exhaust gas reimessi is performed by the liquid refrigerant (heat exchanger), then the heat that passes from the exhaust gas to the water directly.

[mikyrace82]

in the last egr c? a heat exchanger for lowering the temperature of the gas is reintroduced into the combustion chamber but if we take, for example, the tdi mounted on the golf IV, the gas to go directly to the intake without any cooling. However, without going ot, c? to say that besides the egr, it does its dirty part of the recovery tube oil vapours. Their marriage ? the cause of the sludge that is blocking all the inlet manifold and raises the temperature of the intake air.

[engy]

[SandroMarciano]

this gas which we call "enox" are of the most banal nitrogen oxides, called NOX, and you don't need to get to 1800 why? form, you get when we are in the presence of the following circumstances:
the place is rich in oxygen;
high temperature;
variation of the temperature in the time very high.

[giarras]

this gas which we call "enox" are of the most banal nitrogen oxides, called NOX, and you don't need to get to 1800 why? form, you get when we are in the presence of the following circumstances:
the place is rich in oxygen;
high temperature;
variation of the temperature in the time very high.

exact sandro, briefly, but ? the reality

[voglioimparare]

the problem of the formation of NOX and particulate matter, and jumped out with common rail.... and true that,polverizando the diesel to 1600 bar, this s melee everything with the oxygen and the combustion is improved, and therefore performance. this has only one business purpose,no fap fap egr and company... omologano a car euro 6 and then when regenerates becomes euro meno6 because expels all together the accumulated particulate matter or who for it...

[MultiBravo]

Right.. How ? true that the higher ? the temperature of the combustion, the greater ? the quantity? of NOX. For against for? it produces less particulate matter, and the catalyst is working better also because of the temperature the most? high..For which the manufacturer is a compromise between the formation of NOX and quantity? of dust emitted..
Then, only closing the EGR (exhaust gas recirculation in an engine with dpf are going to lengthen the interval between regeneration and the other..

[SandroMarciano]

attention to? not to generalize, the egr is not "work" by lowering the temperature in the room, this? not ? the way in which it operates. The egr works reimmettendo room with gas at least parts of oxygen, so having less NOx products, in and of itself would not create any problems with the dpf. The problem of the egr ? that ricircolando the exhaust gas soaks all the intake manifolds, and the classic consequences are the valves swirl that will break for example.

[Xtreme0303]

remove usually ? silly, and against pretty much anyone...why? not to do so?

[SandroMarciano]

remove usually ? silly, and against pretty much anyone...why? not to do so?

I don't understand what you are saying...
I tell you what I think: if you have a moral and you are a convinced environmentalist keep it well active, but if you do not want to have the machine strattona, do not want to open the collectors every 50000km to wipe them all perhaps ? appropriate to close it.

[rondella72]

Guys I can tell myself my?
Gpl for the whole life!!!!!!!!!!:)

[Xtreme0303]

I say that technically usually exclude the egr ? nonsense, and environmentalists believe should not have even an electric car since almost fully? the electricity is still from fossil fuels

[rondella72]

Sorry I forgot.....on the theme of environment suits these hypothetical solutions adopted by the houses costruttici (egr, fap, dpf and now even denox) is not abbatter? never pollution. At least with gpl or methane, things fade a little,Mah!!!!!!!!!!!!!
A greeting to all

[engy]

Sorry I forgot.....on the theme of environment suits these hypothetical solutions adopted by the houses costruttici (egr, fap, dpf and now even denox) is not abbatter? never pollution. At least with gpl or methane, things fade a little,Mah!!!!!!!!!!!!!
A greeting to all

[ecuboost]

according to me you pollute even when one changes the filter, or clean the collectors, why? them are to collect special waste, for? pollute always if every thing thought to pollute then you should not even breathe why? produces CO2, everything pollutes, then I think that we should not be strafottenti vis-à-vis the environment, but not even overdo it...

[Xtreme0303]

We go to graze in areas that are difficult with the speech environment.

[cjack]

If the builders did the egr that is not imbrattino up to the crash, a problem would be solved... I have a scenic 1.9 con350000km with egr perfect and never touched... But in the 147 after 100000km the egr was full of sludge....

[Xtreme0303]

A matter of luck, my brother-in-law in his big point has 284000 miles completely original..

[MultiBravo]

attention to? not to generalize, the egr is not "work" by lowering the temperature in the room, this? not ? the way in which it operates. The egr works reimmettendo room with gas at least parts of oxygen, so having less NOx products, in and of itself would not create any problems with the dpf. The problem of the egr ? that ricircolando the exhaust gas soaks all the intake manifolds, and the classic consequences are the valves swirl that will break for example.

yes, you are right, I just wanted to note that the recirculation creates pi? powders and therefore? it clogs before the dpf..
by closing the egr produces less particulate matter and stretch the regenerations in a sensitive manner, in theory..:)

[mikyrace82]

agree on the respect of nature, but seems to be going to ot....if we want to continue with the ecology we may also advise you to remap because it increases the amount? exhaust gas...you spoke if the closing of the egr port on the benefits to the engine...yes or no? I would say to you.

[MultiBravo]

I also say to you your whole life! :)

[engy]

I also say to you your whole life! :)

guys I know what good , then, but not to the good of the engine, but to the environment!!!!!!then everyone wants to see in his own way!!!!vabene even so:cool::cool::cool: