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Car Forum / Driving, Maintenance, Tuning / General Car Topics / October 2005Diesel NOx emissions concerns.
I was reading a automotive tech mag today and I read that there are no US or European Diesel engines that can meet or have solutions to meet 2009-2010 diesel NOx limits. Also no US car maker has one that can meet 2008 levels either even with reduced fuel sulpher. On solution being considered is injecting urea into exhaust system (ammonia) to react with NOx and reduce it. It is currently being tested by BMW and VW and others are looking at it. ONe design has a urea cartridge that has to be changed for time to time and another one has two fill nozzles at pump side by side, one for urea and one for diesel into a twing receptical on vehical. The urea is being made/extracted from animal urine. THis is a real deal and quite a spin of emission control and recyling! >The urea is being made/extracted from > animal urine. Now *there's* a carreer path! "What do you do?" "Oh, I'm the bucket-man in an animal urine extraction plant." >I was reading a automotive tech mag today and I read that there are no >US or European Diesel engines that can meet or have solutions to meet [quoted text clipped - 8 lines] >animal urine. THis is a real deal and quite a spin of emission >control and recyling! If you want a real buzz on recycling, I was told UREA found on the market is actually a waste product in other industrial processes, so people are happy when you use it. later, tom @ www.CarFleaMarket.com It's impossible for exhaust to contain Nitrous Oxide. It's near explosive! Any somehow in there (also impossible unless you've got a NOx injectors system) would likely burn from the exhaust heat alone, even if it somehow didn't combust in the cylinder.. -- _____________________________________________________ For email response, or CC, please mailto:see.my.sig.4.addr(at)bigfoot.com. Yeah, it's really a real address :) "see.my.sig.4.addr" wrote: >It’s impossible for exhaust to contain Nitrous Oxide. >It’s near [quoted text clipped - 9 lines] >mailto:see.my.sig.4.addr(at)bigfoot.com. >Yeah, it’s really a real address :) You are quite wrong. NOx is not flamable, it will not burn by itself for if it did there would be no NOx issues. Diesels are very big NOx generators, especailly turbo ones. It is the heat and pressure of combustion that forms NOx because nitrogen (which is generally inert) combines with excess oxygen at time of combustion when temps and pressure are right to form NOx. >"see.my.sig.4.addr" wrote: >>Its impossible for exhaust to contain Nitrous Oxide. [quoted text clipped - 11 lines] >combines with excess oxygen at time of combustion when temps and >pressure are right to form NOx. Interesting. So NOx won't explode if you filled a balloon with it and put a match to it? Why isn't there any unburned extras in diesel exhaust that combust in the presence of the NOx (I assume it acts like Oxygen, hence it's use as a power booster)? Maybe they could create a NOx turbo, something that catches it and feeds it back into the engine :) Would be cool, but probably impossible I guess. Finally, to the OP, why does anybody care about NOx emissions?! It's not like it's bad for you, they feed it to you at the dentist! If it's "greenhouse" crap, I say screw it. Greenhouse Shmeenhouse :) Maybe the dinosaurs will come back to life if it gets hot enough! -- _____________________________________________________ For email response, or CC, please mailto:see.my.sig.4.addr(at)bigfoot.com. Yeah, it's really a real address :) |
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