May-21-2018 07:08 AM
Jun-01-2018 12:41 AM
brulaz wrote:
It's rare to hear of a clogged EGR on a newer diesel with DEF and DPF. But on 10 year old systems, it's common.
There were early rumours that the 6.7 Cummins in the new RAM HD (2020?) would eliminate the EGR completely. But lately I've been reading that it will still be there.
May-28-2018 05:15 AM
gitane59 wrote:Bedlam wrote:
I thought DEF and DPF were both downstream. Eliminating EGR would be more in-line with your hopes.
Current DEF and DPF system's will not work without massive amount's of EGR so until the entire system is entirely downstream and independent of the engine mechanic's itself it is hard to call the current system downstream.
May-28-2018 04:37 AM
May-26-2018 03:51 PM
Bedlam wrote:
I thought DEF and DPF were both downstream. Eliminating EGR would be more in-line with your hopes.
May-26-2018 02:32 PM
May-26-2018 01:50 PM
May-25-2018 06:46 AM
Charlie D. wrote:
Don't the new non-modified engines also emit less than the pre-2003 emission vehicles you speak of? Are you saying that a deleted vehicle with the emission system severely restricted or removed produce no more particulate (soot?) than a gasoline engine?
May-24-2018 01:54 PM
ShinerBock wrote:
Do you also say the same for those driving older pre-2003 emissions vehicles that emit more than a modern deleted diesel and refuse to get a newer vehicle with better emissions? Or how about those that refuse to move away from the conveniences of a population dense area which intensifies NOx production especially in warm climates. Or what about the people driving direct injection gas engines that emit about the same particulate matter as a deleted diesel?
May-23-2018 02:02 PM
Grit Dog wrote:
And I’d rather have a fireman they was breaking the emissions laws than one sitting in a truck in limp mode when I need a fire truck! Btw, if you know where Lincoln Co NM is, no one there cares and pretty much no one goes there unless they already live there or have to be there.
May-22-2018 06:48 PM
May-22-2018 06:33 PM
brulaz wrote:
The manufacturers want "one rule for all" as well. Makes their life a lot simpler and more profitable.
But we should be happy that all the city people don't have to move out to the country to get a breath of fresh air. Having to deal with pollution controls on all our vehicles seems like a small price to pay to make the cities livable.
Personally I'm happy with my 2016 RAM Cummins just the way it is: un-deleted. It's clean, powerful and so far, knock-on-wood, very trouble-free.
May-22-2018 05:47 PM
ShinerBock wrote:
...
So since the EPA has to make a "one rule for all" in regards to emissions, a person such as a farmer or one that lives in a rural area on a colder climate who will probably never drive their truck to an area with enough NOx to have any effect on human health still has to abide by the same rules a those city dwellers in places such as California where NOx is a health concern due to the heat and population density. How fair is that?
May-22-2018 05:00 PM
brulaz wrote:ShinerBock wrote:
...
NOx is only bad if it stays stuck in the troposphere like it does over population dense areas on hot days. In less populated areas and in cooler climates, it has a chance to dissipate into the stratosphere which is a good thing since it is an ozone gas that is also produced naturally. NOx in troposphere = Bad // NOx in stratosphere = Good
...
Section "10.2.2 Nitrogen oxide radicals (NOx)" of this book:Introduction to Atmospheric Chemistry, says that there is some ozone loss in the stratosphere from NOx catalyzed reactions. But that the source of NOx there is N2O coming up from ground level, not the NOx itself coming up.
But I'm no atmospheric chemist, and much of what's in the book is meaningless to me. Still it might be of interest.
Many rural areas still have enough clean air left to handle NOx and other pollutants without major problems like smog. Like they used to say: "dilution is the solution to pollution". But the amount of clean air, like water, is getting less and less.
May-22-2018 04:37 PM
May-22-2018 04:16 PM