[SEL] Corn-gas a BUST!

[JR504 at aol.com]

At the risk of sounding like a conspiracy theorist, which I am not, this is  
nothing more than a mouthpiece article for big oil, taking a shot at  
Biodiesel and Alternative Fuels.  This is very old news and written in a  way to make 
it sound like something that it's not.  The emissions that  they're referring 
to is NOx emissions (NO, NO2, NO3) that is formed under high  combustion 
chamber temps.  The tiny increases that you normally see with  Biodiesel (from 
100ppm to 102ppm on my car during cruise) can very easily be  compensated for by 
increasing EGR gasses, or retarding injection timing by  a degree (1.5 degrees 
on my '99 VW TDI).  For a long time these increases  were disputed because 
they are small enough to be camouflaged by normal margins  of error in 
dynomometer testing.  The latest Diesels have catalysts that  virtually eliminate NOx 
emissions out the tailpipe, so the 2% increase out of  the combustion chamber 
doesn't mean anything.  Tailpipe emissions between  the 2 fuels on engines 
equipped with modern exhaust systems is identical, at  least in terms of NOx.  Soot 
is much lower with Biodiesel.
 
Joe Rappa
Mexico, NY
 



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