actually since your putting in about 900psi of pressure into the spray bar
or nozzles.... you are increasing the pressure in the intake to some
degree.... thou you have WIDE OPEN throttle plates so it's most likely not
HUGE.... LOL.... but it's something..and the other thing is that the
Transition from Liquid to Gas extracts massive amounts of Heat.... and the
cooling effect much like the intercooler for the turbo is worth
something..... but Remember this.... whatever the motor is ingesting for
oxygen content with the nitrous added has a Lot more O2 by volume.... 23% Vs
the 33% of the Nitrous.
Keith ( hey Mayf I hope you don't mind I shared this.... I always enjoy your
manner of decoding myth's and cyphering out the truth of a subject )
----- Original Message -----
From: "DrMayf" <drmayf@teknett.com>
To: "Keith Turk" <kturk@ala.net>
Sent: Wednesday, February 27, 2002 6:05 PM
Subject: Nitrous 101
> Enjoyed your discussion on power adders! There are a couple of comments,
> tho. The first concers volumetric efficiency. All of the text I have
> consulted, as well as people, indicate that volumetric efficiency is a
> function of the hardware itself. That is the flow and flow path of the air
> and fuel mixtures. Rough castings, mismatched gaskets, small valve bowls,
> small runners, small valves all contribute to volumetric efficiency. If
you
> car has a volumetric efficiency of 85% then adding any kind of power adder
> does not change the volumetric efficiency. Those restrictions to flow
exist
> whether or not normally aspirated or with power adders. It is the reason
for
> porting heads, adding bigger valves, well, you get the idea. The reason
that
> turbo(s) are wonderful devices is that the turbo, if matched to the
> application can be spooled up early in the rpm range and make gobs of
torque
> down low. It does this through the application of the properly sized
turbine
> scroll housing and waste gate system. Boost comes on and stays on! The
> various screw type, centrifugal, and rootes types of superchargers have
> their outputs directly proportional to rpm of the engine. Hence, at lower
> rpm, they do not produce significant amounts of boost. They do, however,
> consume quite a bit of power to operate theselves and because of the belt
> tension and torque transmitted, cause some pretty serious crankshaft
> harmonics which have lead to split blocks.
>
> There is one area of nitrous use which defies me. I do not understand how
an
> open system, ie normally aspirated, can actually injest more than the
system
> wants to inhale through the piston moving down on the intake stroke. With
> NO2 you aren't forcing the added mixtures into the cylinders like in a
> boosted adder, so how does it do it? If I ever get to my brains in
storage,
> I am going to do a simple mass flow analyses with all the correct
> temperatures and pressures and see if I can understand it. Your analysis
of
> the flame propagation seemed to be right on as far as I can tell.
>
> Now for the important stuff. They are installing plumbing fixtures, all
> electrical fixtures (complete today), kitchen counter tops, fireplace
> surround (you gotta get into this business, more money than rocks!),
> correcting one door problem and cleaning like mad. They still have a lot
to
> do and we still do not have a firm date, hell, no date at all, as to when
we
> can move in... It does seem like most of theis year will be taken by
> landscaping and just getting the house turned into a home. So in all
likely
> hood, no Bonneville this year. Maybe that will bring you luck ;^}
>
> Tell Brad and Grib hello for me...
>
> mayf, the red necked ignorant desert rat in Pahrump
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