Does anyone know why so many diesel engines require DPF filters today? As I understand it they filter out the unburned carbon from diesel exhausts which AFAIK does no harm to the environment except it is a waste of diesel fuel, it would just settle to the ground and enrich the soil. It is not C02 so it is not warming up the planet. Then periodically when the filter plugs and starts to restrict the exhaust flow, the engine computer uses more fuel to heat up the filter and clean it out. More wasted fuel that doesn't move the vehicle anywhere. Eventually they say the DPF will plug up with ash and need replacement. I've found many explanations on how these things work, what I don't find or understand is why we need them in the first place? What damage does the small amount of black soot from a properly tuned and operated diesel engine do? Or is it just to placate those who see diesels emitting black smoke and think that it is major pollution?
We have a winner.
You obviously haven't ever came down the hill into L.A. at sunset.
A properly tuned and operating diesel engine should show no visible particulate matter. The issue was presented as the invisible particulate matter can be inhaled deeper into the lungs possibly causing long term health problems especially in people who already have breathing issues. As I recall it was statistically stated that young and old people death rates would be decreased by some factor that would be justified in some government bureaucrats realm of responsibility so jobs could be justified. You could do nothing about the regulation because it was never voted on. Some bureaucratic agency instituted the regulation outside of the political process. At this time you have no say in the matter so you should just be quiet and accept what has been ordained by big brother. OR; You could vote out the idiots in your government that allowed this to happen.
Yep your right I only lived in Socal for 5 years.
And because the movie stars drive Hybrids and Electric cars they should be clean air in Cal.soon
I have read that the soot settles at the poles and has a measurable effect on the snow melt. If you believe that? I had a really enlightening conversation with a CASEIH engineer at a local farm show recently. My question was why is it every manufacturer is using seemingly vastly different methods to deal with emissions. The most recent large red tractors have no engine mods, no dpf, no egr, no nothing. They run adblue and thats it. HOW? He explained that it all comes down to combustion temp. Low combustion temps don't generate the NOX, just a lot of particulate. High temps don't generate much soot, but a lot of NOX. Case has decided to go back to a tier two design, and add adblue. He also explained that the technology used is dependent mostly on the age of the engine product line. If you have made recent investments in the engine design, you will want to keep it in production. So you have to add whatever technologies are necessary to meet the emissions goals. However, if the engine line is older, it may be time to reinvest in your engine production chain. This is the case with the engine supplier CASE is using. So they went to an engine that runs hotter, produces little particulate and lots of NOX, then use adblue to clean it up. Sadly, i have read a lot on this subject and i still don't understand it all. There is a ton of stories floating around, and it is all very confusing.
"Case has decided to go back to a tier two design, and add adblue." ___________________________________________ We just bought a new Case skid steer 430 it has a tier 3 engine?
CARB is fraud Today anothet story out about how CARB "miscalculated" (read lied) about diesel pollution. Nice to see the liberals have struck again, costing jobs and devaluing equipment across the country.:Banghead http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2010/10/07/BAOF1FDMRV.DTL#ixzz11iqEfuN9
What all this says is that government experts cannot be trusted to put forth credible statistics to support legislation without independent verification by third party sources. Unfortunately because of the cost to achieve that verification it very seldom happens that private industry can afford to duplicate the research. So how many other pieces of legislation can we think of that just doesn't add up when you look at the " experts" research? Global warming comes to mind to me quickly. Perhaps this group can come up with some more examples.
Read the above quote again. I bet it was time to redesign the skidsteer engine, but the ag tractors have a fairly new engine.