EGR blanking / blocking - what is the real deal?

[monty_GTV]

and for easy reference and just a few mouse click away, please do not forget what mr. wiki says about EGR...

Exhaust gas recirculation - Wikipedia, the free encyclopedia

[Thumbdrive]

*Big-D, learn from the experience of other monty (and other vehicles with EGR) owners that did or had their EGR blanked, also why we regret having that done late (running several thousand kilometers already before blanking).
if it's me, given another chance, i will blank that right away after stepping out of the casa.

[Big-D]

Now, you should wonder how a 30+yrs old jeepney engine without these environmental device(and venting the crancase in the atmosphere) could pass an LTO testing.

Sir 12vdc....

That is the million dollar question !!!
Euro2 - Euro4 (I heard euro5 is coming out soon too) might not be the outright answer as the vehicle needs to be rated as to compatibility.

Like what I've mentioned earlier, my old school wrangler (no u, just direct injection), when emission readings started to get nasty, went to my suking mechanic, bored a hole in the upper exhaust (right after engine) welded an inlet pipe, and whalaa, instant water with soap cleaning prior to testing and it passed. That wrangler is lifted and intended for the bukid and for baha literally, sometimes it makes the rounds of city driving on weekends as well... and oh btw, it's close to 20 yrs old with a toyota 2L engine.

The past decade saw the emergence of SUV's with EGR's and CRDI's, and all this "environmental thingy" slapped into it.
Am starting to wonder if newer rigs are really not meant to last long, not like the ones manufactured 20-30 some years ago (an example is the original land cruiser of the 70's)

That said, everything could just be darn out marketing / manufacturing consideration.
"don't make it last long so customers will buy new rigs"
If the 3yr old fortuner at 21K mileage still holds clean in the emission test, then hopefully maintenance cleaning of the EGR, SCV, and manifold will work just fine.... on the otherhand and th emission test shows it's fouled-up, then replacements and eventual EGR blanking will be in the works, afterall "Forty" is already passed warranty

Thanks big time Sir !!!
*** maybe we should stick to gasoline cars, mahal nga lang kesa krudo (",) ***

[Big-D]

*Big-D, learn from the experience of other monty (and other vehicles with EGR) owners that did or had their EGR blanked, also why we regret having that done late (running several thousand kilometers already before blanking).
if it's me, given another chance, i will blank that right away after stepping out of the casa.

Salamat Sir Thumbdrive,

Point well taken, will keep that suggestion handy.

[monty_GTV]

an old article about EGR...

AutoSpeed - EGR Comeback

[monty_GTV]

borrowing a photo from a recent article in autoindustriya.com...Getting to know the Turbocharger



the real deal in EGR blanking or blocking? it's item number 5, the cool air that enters the engine called "BOOST". you need that cold air to have more efficient combustion and more power.

being environment friendly is another thing

[Wh1stl3r]

I've debated whether to have this done but decided to go for it. The list of harm Nox can do to the environment is pretty extensive. But after seeing how degenerative it is to the engine, (specially with 500 ppm sulfur fuel) I've decided it defeats its intended purpose. It may seem harmless when your car is new, but after a few tens of thousands of Km's your emissions are going to degrade exponentially.

I had it blocked and planted some trees to get rid of the guilt. If ever the time comes that every station had Euro 5 diesel I'd unblock it and maybe use something like Seafoam?

As for using only gasoline powered cars, that may be counterproductive. It would bring the prices of gasoline up if everyone used it. I still think it's better to "use all the parts of the chicken".

*12vdc
I thought EGR valve was closed at idle, and only opened at part throttle. Also delete some messages, I can't send you a PM hehe.

[Djerms]

I've debated whether to have this done but decided to go for it. The list of harm Nox can do to the environment is pretty extensive. But after seeing how degenerative it is to the engine, (specially with 500 ppm sulfur fuel) I've decided it defeats its intended purpose. It may seem harmless when your car is new, but after a few tens of thousands of Km's your emissions are going to degrade exponentially.

I had it blocked and planted some trees to get rid of the guilt. If ever the time comes that every station had Euro 5 diesel I'd unblock it and maybe use something like Seafoam?

As for using only gasoline powered cars, that may be counterproductive. It would bring the prices of gasoline up if everyone used it. I still think it's better to "use all the parts of the chicken".

*12vdc
I thought EGR valve was closed at idle, and only opened at part throttle. Also delete some messages, I can't send you a PM hehe.

That was also what I thought. However based on my obd2 scanner, its always partly open 20%, then opens more if you baby drive. But if you punch the accelerator, it will just be at 20%. This is on my ranger t6. On my civic fb, its always closed unless you baby drive

Sent from my GT-I9082 using Tapatalk

[Wh1stl3r]

^
20%?! Not good at all. I-block na lang nga. Hehe.

Here's an interesting read comparing the amount of pollutants of diesel and gasoline.
Vehicle Emissions | Air Pollution | City Diesel | LPG | CNG
Gas isn't exactly "cleaner".

[OTEP]

borrowing a photo from a recent article in autoindustriya.com...Getting to know the Turbocharger



the real deal in EGR blanking or blocking? it's item number 5, the cool air that enters the engine called "BOOST". you need that cold air to have more efficient combustion and more power.

being environment friendly is another thing

With a sufficient airflow to an intercooler with a large enough surface area, the drop in air temp entering the combustion chamber plus the positive pressure provided by the turbocharger is sufficient to provide the boost in power. I think berrima diesel will allow you to dyno the vehicle prior and after work is done by them (if you have them block the EGR). The EGR cooler (not all vehicles have this) is placed to cool the hot exhaust gases that are being recirculated back. Otherwise, it will just counteract the cool air being chilled by the intercooler.

The cooling happens as ambient air is passed through the intercooler after being pressurized by the turbocharger. This is where the increased power comes from (forced induction plus intercooling)

The egr cooler just cools the insanely hot exhaust gases before mixing it up with the cooled ambient air.