nursecosmo wrote:
There is no definitive research to show that Nox is harmful to the environment. But the US government wants to limit it anyway possibly because it causes more petroleum to be burnt up through EGR systems, lower MPG = more taxes. what has been demonstrated is that CO2 causes global warming. If I can decrease total petroleum usage by 15-20% in my jeep by disabling the EGR then I am making a definite contribution the the environment because that is 15-20% less CO2 (not to mention the decrease in particulate emissions). If I use Biodiesel I am producing zero new CO2. The moral of this story; disabling the EGR is good for the planet and bad for the super polluting oil industry as well as the politicians who receive their paychecks from them.
http://en.wikipedia.org/wiki/Nitrogen_oxide#NOx
Please keep in mind that NOx has been studied as a pollutant for far more than vehicles, and yes it is fairly conclusive. Real world examples are easily found, power plants in China have nearly zero NOx controls and have massive amounts of acid rain and smog surrounding them, while in the US since we cleaned up NOx output such problems have largly dissapeared. It is not in debate.
Oddly enough, CO2 is *not* proven to cause global warming, that much is still very much in debate. Major problems with the theory abound. I do believe in global warming, but its not nearly as 'proven' as NOx is as an atmospheric contaminent.
I have addressed your statements on BioDiesel in the Alternative Fuels forum, btw, and will not rehash them here.