Exhaust fumes in brand new 2013 Cascadia

egr means i may have high co level in truck cab ? I don't see connection between egr and high level of co in cab. if I am wrong explain me. that guy died in Laredo because his truck was old, non maintained junk with broken flex pipe on exhaust .
non-egr engine's fumes contain enough co to kill a human if somehow it will go into cab . so engine is egr or non-egr is not important.
and again if you have scr engine chances that you will be poisoned or dead because of co are near 0 ! if you think I am wrong show me one case where driver was hurt in scr truck.

the CARB is saying that cause of lung cancer is diesel exhaust PM. Do you believe it ?

 

Appreciate your question, as it shows that you may be understanding what is being talked about here and the hazards to drivers. To answer your question, egr means I may have high co level in truck cab? You are right, it does not mean that you automatically have those high levels of CO. What must be understood is that with the start of the egr systems, exhaust gases were cooled and put back thru the turbo and re-burned again to help get rid of the un-burned gases and help “clean up” what goes out to the exhaust pipe. In doing this extra piping, valving, and seals were used to accomplish this, along with creating tremendous amounts of extra heat in the engine compartment and if any leaks developed in the egr cooling seals and valves, toxic glycol antifreeze could be part of any fumes from any leaks any place in the system. Because of the extra heat generated by this system it causes many more leaks to develop that otherwise would not happen. The new scr systems still use these same egr components in their operation, but with doing the final cleaning of the exhaust at the end of the process in the catalytic converter and filters at the very rear of the truck cab and just before it goes out the end of the tailpipe. At this point, yes, the exhaust, and if the system is working properly, CO, soot particles,nx, and other items does meet the EPA standards, and much of these have been removed. To accomplish all of this tremendous amounts of heat is being generated, as high as 3000 degrees in some areas, this also involves usage of “flex” pipe connecting many points throughout the system in the engine compartment and under the cab. For instance, Volvo engines use “flex” pipe between the cylinders for the exhaust manifold, and which the connection between the number 5 and 6 cylinders has happened quite often on trucks that are almost new. These “flex” pipes and seals, due to the tremendous contraction and expansion they have to handle have a very high failure rate in these newer trucks in a very, very short time.
You say a very high CO level in truck cab? ,, You must understand, it is not the “high” levels that will hurt or cause problems such as fainting, heart attacks, passing out, and so forth, but the lower levels that you may not even smell. Those in the 3ppm range and up over a 20 hour time every day that you are in your truck. At 2ppm it would be like smoking a cigarette straight for 20 hours. You must understand that it is just not the CO levels, it is really just an indicator that you are getting all the other TOXIC fumes along with it that is comprised of many other very harmful chemicals that are far worse than CO. Many times these fumes will come in through the air conditioner/ heater because it is being drawn in through the fresh air inlet.
One other question I am going to ask,, you have a 2013 Cascadia, well maintained, but have you ever really had a test done to see if you may have these low levels of CO in that truck??
You also ask to show you one case where a driver was hurt, I am going to do just that, one specific one that had a 2015 almost new scr truck, very few miles, himself and a student driver, over a space of 5 days driving had to be checked into an emergency room, given medication, and told by the doctor that they could not go back to driving for at least a week. If you do not believe this, just go back on the website, www.truckmonoxide.com and just watch the video that was done on it.. See for yourself and make your own decision.
My only concern is for the many, many drivers that have been injured by this and only through investigation that they may protect themselves from it…………..and arrive home safe………..

 

EGR is not made for get rid of the un-burned gases.
EGR does not generate extra heat. EGR lowers fuel burning temperature(to have low level NOx in exhaust gases).
http://en.wikipedia.org/wiki/Exhaust_gas_recirculation

I have never tested CO level in my truck CAB. I don't idle. When I drive the window is open a little even cold weather. I pay attention on exhaust system. its in proper condition and if I see something loose or cracked I fix it immediately. I understand what you want to say. There could be leak and the driver will not know about it. He will idle the truck in the night and die. Could happen. But chances are very very low with SCR truck. Do you have connection with www.truckmonoxide.com ? just wondering.

 

Thanks for the question, The term hotter or cooler, applies to both "engine" or "system" for egr and scr applications.

Do SCR engines run cooler than EGR engines? As its name implies, cooled EGR cools and mixes measured amounts of exhaust gas with incoming fresh air to lower the engine’s peak combustion temperature, thereby reducing oxides of nitrogen (NOx) to an acceptable level. The exhaust gases are then routed through an exhaust filter and the particulate matter (PM) is trapped in the filter and – through a process called filter cleaning – oxidized into nitrogen gas and carbon dioxide, then expelled through the exhaust pipe. In contrast, engines equipped with SCR technology usually operate at higher combustion temperatures. This in turn reduces particulate matter to lower or acceptable levels. However, because of the higher combustion temperatures, the engine creates more NOx.
To reduce NOx, a diesel exhaust fluid (DEF), also called urea, is injected into the exhaust stream. When the exhaust gases combine with the urea in the SCR catalyst, NOx is broken down into nitrogen gas and water vapor and expelled through the exhaust pipe.
In summary, cooled EGR engine combustion temperatures typically run cooler than engines operating with SCR. Those utilizing SCR have tried to confuse customers into believing that cooled EGR engines run hotter… rather than simply with higher heat rejection. Cooled EGR engines do place more cooling requirements (higher heat rejection) on the cooling system;

Please remember with "fumes", the problem is not so much what comes out of the tailpipe, but what comes out in the engine compartment through break downs of the "coiled" type of exhaust piping connecting the exhaust "before" it gets to the Regen/converter system. This leakage from the engine compartment can come in through the fresh air intake for the truck that is mounted "under" the hood closure. "system" heat is hotter in these engines which deteriorate the hood seals just before the fresh air intake and then when the heater or air conditioner fan is turned on high it can come into the cab these fumes can come in a high rate. Anywhere in the engine compartment firewall there is a small area not sealed up it can come in. Remember also most truck engines have some sort of "blow by" tube to relieve air pressure build up that can also cause fumes. These leaks can occur on the firewall where heaters and air conditioners are mounted. Please keep in mind that engine compartment fumes from an "scr" truck are actually more toxic than the older trucks because the "egr " does not put as much of the exhaust back in to be "re burned".
The reason the I keep referring to the www.truckmonoxide.com website is because no where else is there as much information on the dangers and causes of CO and is shows so many instances of all the problems and medical problems that I encountered as a company driver and owner operator for many years and all the problems it caused me. Hopefully the more information that is out there, the less problems that drivers such as you may encounter. I have some very close driver friends that have suffered very so much because of it, and several have had heart attacks and other problems that are just labeled as "unknown". And yes, at one time I thought that "it can never hurt me", only to find out that it can. Just drive safe and get as much information as you can....

 

What roaddog is telling you is the truth, Was taken to hospital a month ago from fumes coming inside of a Volvo thru the freshair intake,

 

Go to youtube, and put in truckmonoxide.com,You Might Learn Something.

 

The Volvo,freightliner,International, all have the freshair intake design, Ck out youtube put in truckmonoxide.com,10 vidieos

 

So whatever happened? What was it?

 

That , Dave , is the ultimate WTF question in too many of these threads . I've even sent PMs to some that started the thread and disappeared . No joy.

 

Rolls Canardly here,
Some possible places to check for sealing:
Sping clamp around Turbo to exhaust flange. (Had a guy put that back on crooked and mis-aligned w/leak.)
The boot to shifter. (Just missing screws will stink into cab.)
The seal around Steering wheel shaft.

Open the hood at night and have someone shine a bright flashlight around under dash
while you look for light in engine bay. Recent wiring dislodge a grommet, etc?

I also am disappointed there are people on here that ask for help,
and then don't come back to post just what the heck it was that fixed it???
Guess they don't know we all are trying to learn something here.
That is a feedback loop that needs to be fixed.

Have a Great new year, All.
"Rolls down one hill, Canardly get up the next."