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Re: [T3] oxygen injection


<x-charset iso-8859-1>Heat causes N2O to break up into nitrogen and oxygen.  Now air is a mixture
of nitrogen (80%) and Oxygen (20%), while pure N2O becomes a mixture of
about 66% Nitrogen and 33% Oxygen by volume.
Is it normally used mixed with some air?
You can see there is an increased proportion of oxygen in the mix so you can
burn proportionately more fuel with each charge of air or N2O.
Pure oxygen would increase the amount of fuel that could be completely
burned, but so much extra energy would be produced that temperatures would
rise too high for the engine, not to mention shock loading as the combustion
gases would expand much more rapidly.  The Nitrogen plays a useful job in a
normal air induction engine by expanding with the heat and pushing on the
piston.
(Apologies to any chemist for not going into HTML for the subscript '2'  -
cries of NO! from Greg?  I guess a strange combination of alt and numbers
would get subscript '2').

Dave.
UK VW Type 3 & 4 Club
http://www.hallvw.clara.co.uk/
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