Oil catch can

[shakenfake]

Yeah that's great. That entire article does not apply to our trucks. Go find the exhaust valve on your truck. Call the dealer and ask them. It does not exist, I know what an EGR is and does. I had one on my truck and deleted it. They quit putting them on the gas trucks in 03

[M1ck3y]

45 minutes ago, customboss said:

duckduckgo    

 

There isn't ONE single thing you've said that aligns with the operation kf gm's LT based engines. But I'm the one thats wrong, and spreading lies?

 

You are twisted, and have serious issues if your willing to actually plant lies where they have no place being.

 

I wish you a comfortable and swift retirement. People like you make the world toxic!

 

I'm done. You've attempted to twist everything I've said. People can do their own research and determine who the idiot actually is.

Edited December 13, 2021 by M1ck3y

[JimCost2014]

continue to throw around baseless words attempting to confuse everyone and paint the appearance that you know what your talking about.

 

Hmm, this is how I have held jobs for decades, hope none of my current bosses are members of this site

[shakenfake]

2 minutes ago, JimCost2014 said:

continue to throw around baseless words attempting to confuse everyone and paint the appearance that you know what your talking about.

 

Hmm, this is how I have held jobs for decades, hope none of my current bosses are members of this site

Hahaha isn't that how we all do it

[Gangly]

There is no EGR system on these trucks but as mentioned earlier the VVT, ignition mapping, and fuel mapping tables work in an integrated manner to provide the same end result; cooler cylinder temperatures inhibiting the production of NOx. 

 

The VVT system allows the exhaust valve to stay open longer through the pistons up stroke, resulting in a slight suction on the exhuast side of the cylinder that sucks the products of combustion(exhaust) back into the cylinder, resulting in the displacement of a small amount of combustible gases with that of a small amount of mostly combusted byproducts from the prior combustion cycle.  This creates a less than ideal stoichiometric ratio resulting in a less than ideal combustion, ie lower cylinder temperatures.  Lowering temperatures in the cylinder can also be done by the fuel system creating a too rich environment, or through adjusting the timing of ignition.  Through the combination of those three systems, GM can significantly alter emissions without the use of a recirculatory system that routes spent exhaust gases back into the intake tract.

 

So technically there is no EGR since there is no "Recirculating" event taking place and exhaust gases are not being routed back to the intake tract.  However, the VVT, fuel mapping tables, and ignition tables act congruently to bring about the same end result as the antiquated EGR systems: lower cylinder temperatures and lower NOx emissions.

[shakenfake]

7 minutes ago, Gangly said:

There is no EGR system on these trucks but as mentioned earlier the VVT, ignition mapping, and fuel mapping tables work in an integrated manner to provide the same end result; cooler cylinder temperatures inhibiting the production of NOx. 

 

The VVT system allows the exhaust valve to stay open longer through the pistons up stroke, resulting in a slight suction on the exhuast side of the cylinder that sucks the products of combustion(exhaust) back into the cylinder, resulting in the displacement of a small amount of combustible gases with that of a small amount of mostly combusted byproducts from the prior combustion cycle.  This creates a less than ideal stoichiometric ratio resulting in a less than ideal combustion, ie lower cylinder temperatures.  Lowering temperatures in the cylinder can also be done by the fuel system creating a too rich environment, or through adjusting the timing of ignition.  Through the combination of those three systems, GM can significantly alter emissions without the use of a recirculatory system that routes spent exhaust gases back into the intake tract.

 

So technically there is no EGR since there is no "Recirculating" event taking place and exhaust gases are not being routed back to the intake tract.  However, the VVT, fuel mapping tables, and ignition tables act congruently to bring about the same end result as the antiquated EGR systems: lower cylinder temperatures and lower NOx emissions.

Those are not EGR though. @customboss's original claim was that these trucks had EGR.

 

[Grumpy Bear]

43 minutes ago, shakenfake said:

Those are not EGR though. @customboss's original claim was that these trucks had EGR.

 

 

Actually they are and Gangly defined it perfectly. Ya' ll are hung up on the equipment used to DO the work and the words EGR ARE the work. 

 

52 minutes ago, Gangly said:

The VVT system allows the exhaust valve to stay open longer through the pistons up stroke, resulting in a slight suction on the exhuast side of the cylinder that sucks the products of combustion(exhaust) back into the cylinder, resulting in the displacement of a small amount of combustible gases with that of a small amount of mostly combusted byproducts from the prior combustion cycle.

 

Does it matter if the exhaust gasses are "pumped' back in (old system) or if they are "sucked back it" by manipulation of the exhaust event/ (new system)

 

Not really.

 

Both systems use spent and expelled exhaust gasses to 'dilute' the fresh charge...you know the rest.

 

What does EGR mean kids?

 

Exhaust Gas Recirculation.

 

Pause, take a breath. No where in the descriptor is the method to execute or equipment defined. ANY thing that brings spent gas BACK to the cylinder is EGR. Key word RECIRCULATION. 

 

https://www.underhoodservice.com/the-ins-and-outs-of-variable-valve-timing-vvt-systems-and-their-role-in-vehicle-emissions/

EGR & Variable Valve Timing

One item that’s going the way of the smog pump is the Exhaust Gas Recirculation (EGR) valve. The elimination of the EGR valve is the result of the VVT’s ability to control gases entering and exiting the combustion chamber.

EGR systems are designed to reduce smog-causing nitrous oxides (NOx) by recirculating a portion of the exhaust gases from each cylinder of the engine back into the intake manifold. This process lowers the combustion temperature to under 2,500° F, above which NOx gases are formed, hurting both the environment and a ­vehicle’s performance.

 

EGR systems work, but they are not able to react fast enough or precise enough for modern engines and emissions standards.

 

Modern variable valve timing systems are doing the same job as the EGV valve, only better.

 

A VVT system is able to control the timing of the exhaust valve so that the right amount of inert ­exhaust gases remain in the combustion chamber for the next combustion cycle. This controls combustion temperatures and the production of NOx.

 

If you encounter a vehicle that has higher than normal NOx levels, or a burnt or damaged pre-catalyst, make sure the VVT solenoid and exhaust camshaft position sensor are operating properly.

 

 

Edited December 13, 2021 by Grumpy Bear

[shakenfake]

That is not exhaust though. It literally states that it is leaving inert gas inside the cylinder, it is not RECIRCULATING the gas. 

 

You are correct that VVT does the EGR job but it is not EGR. Sorry that's the truth, VVT and EGR just are not the same thing. VVT does a similar job as EGR but it is much different in how it acts and works. Exhaust gases aren't ever leaving the chamber. If the exhaust gases never leave they never recirculate now do they? Exhaust Gas Recirculation means it goes through the whole system again. Don't see how that is a hard concept. 

 

And if you are going to use Gangly as a perfect descriptor don't cherry pick his words. Literally says "There is no EGR" in the first line. You are just looking for arguments at this point to save face. Pretty lame

[customboss]

1 hour ago, Gangly said:

There is no EGR system on these trucks but as mentioned earlier the VVT, ignition mapping, and fuel mapping tables work in an integrated manner to provide the same end result; cooler cylinder temperatures inhibiting the production of NOx. 

 

The VVT system allows the exhaust valve to stay open longer through the pistons up stroke, resulting in a slight suction on the exhuast side of the cylinder that sucks the products of combustion(exhaust) back into the cylinder, resulting in the displacement of a small amount of combustible gases with that of a small amount of mostly combusted byproducts from the prior combustion cycle.  This creates a less than ideal stoichiometric ratio resulting in a less than ideal combustion, ie lower cylinder temperatures.  Lowering temperatures in the cylinder can also be done by the fuel system creating a too rich environment, or through adjusting the timing of ignition.  Through the combination of those three systems, GM can significantly alter emissions without the use of a recirculatory system that routes spent exhaust gases back into the intake tract.

 

So technically there is no EGR since there is no "Recirculating" event taking place and exhaust gases are not being routed back to the intake tract.  However, the VVT, fuel mapping tables, and ignition tables act congruently to bring about the same end result as the antiquated EGR systems: lower cylinder temperatures and lower NOx emissions.

You just described NOx reducing exhaust gas recirculation on the 6.2 and most of the newer GM spark gasoline engines. If you suck exhaust gases back in to recirculate thats EGR. 

[shakenfake]

It isn't though lol that is VVT not EGR, again you are not recirculating. 

[customboss]

4 minutes ago, shakenfake said:

That is not exhaust though. It literally states that it is leaving inert gas inside the cylinder, it is not RECIRCULATING the gas. 

 

You are correct that VVT does the EGR job but it is not EGR. Sorry that's the truth, VVT and EGR just are not the same thing. VVT does a similar job as EGR but it is much different in how it acts and works. Exhaust gases aren't ever leaving the chamber. If the exhaust gases never leave they never recirculate now do they? Exhaust Gas Recirculation means it goes through the whole system again. Don't see how that is a hard concept. 

 

And if you are going to use Gangly as a perfect descriptor don't cherry pick his words. Literally says "There is no EGR" in the first line. You are just looking for arguments at this point to save face. Pretty lame

yeah it is.  The whole point of EGR is to reduce NOx. 

[customboss]

1 minute ago, shakenfake said:

It isn't though lol that is VVT not EGR, again you are not recirculating. 

VVT and cam phasing and ECM with throttle sensing are doing all that stuff you associate with a EGR valve. 

[Grumpy Bear]

The MAJORITY OF THE water in the oil isn't there from the atmosphere. It there from ring blow by combusting gasoline.

 

 

[customboss]

Holy aguascalientes !!! 

[M1ck3y]

39 minutes ago, Grumpy Bear said:

 

Actually they are and Gangly defined it perfectly. Ya' ll are hung up on the equipment used to DO the work and the words EGR ARE the work. 

 

 

Does it matter if the exhaust gasses are "pumped' back in (old system) or if they are "sucked back it" by manipulation of the exhaust event/ (new system)

 

Not really.

 

Both systems use spent and expelled exhaust gasses to 'dilute' the fresh charge...you know the rest.

 

What does EGR mean kids?

 

Exhaust Gas Recirculation.

 

Pause, take a breath. No where in the descriptor is the method to execute or equipment defined. ANY thing that brings spent gas BACK to the cylinder is EGR. Key word RECIRCULATION. 

 

https://www.underhoodservice.com/the-ins-and-outs-of-variable-valve-timing-vvt-systems-and-their-role-in-vehicle-emissions/

EGR & Variable Valve Timing

One item that’s going the way of the smog pump is the Exhaust Gas Recirculation (EGR) valve. The elimination of the EGR valve is the result of the VVT’s ability to control gases entering and exiting the combustion chamber.

EGR systems are designed to reduce smog-causing nitrous oxides (NOx) by recirculating a portion of the exhaust gases from each cylinder of the engine back into the intake manifold. This process lowers the combustion temperature to under 2,500° F, above which NOx gases are formed, hurting both the environment and a ­vehicle’s performance.

 

EGR systems work, but they are not able to react fast enough or precise enough for modern engines and emissions standards.

 

Modern variable valve timing systems are doing the same job as the EGV valve, only better.

 

A VVT system is able to control the timing of the exhaust valve so that the right amount of inert ­exhaust gases remain in the combustion chamber for the next combustion cycle. This controls combustion temperatures and the production of NOx.

 

If you encounter a vehicle that has higher than normal NOx levels, or a burnt or damaged pre-catalyst, make sure the VVT solenoid and exhaust camshaft position sensor are operating properly.

 

 

 

I agree with everything you said.. Except it's not egr, GM has not specd an egr system on LT based engines.

 

As you stated , and as gm states; it's vvt.