Is there a site that describes how an engine (REALLY) works?
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Is there a site that describes how an engine (REALLY) works?

 
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Ken
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Posted: Fri Nov 26, 2004 5:40 pm    Post subject: Is there a site that describes how an engine (REALLY) works? Reply with quote

Hi,

Before people start poting answers about going to howstuffworks.com I
was wonding if anyone could answer this question or show me where I
can find out more info...

The standard Gas engine burns 1 part gas to b/w 12 and 15 parts air.
The Hydrogen in the gas is actually a small part of what's getting
burned.

Since air is primarily made up of nitrogen (78.09%) and oxygen
(20.95%) and we're using say 15 parts of that compared to one part gas
(which is Carbon/hydorgen) it looks like we're burning much more
Nitrox than even Hydorgen. Can anyone tell me what makes the engine
go? (Is it primarily the Nitrogen? Hydrogen?) I know that the Oxy is
nec. for the ignition to even occur.

Bonus question:

I'd like to understand more about what we are actually 'burning'. I
know that adding NOS to the mixture is not nec. the best thing b/c
you're really just increasing the BANG and Power of each stroke (which
shouldn't get confused with adding speed/RPMs). I know that NOS also
has some cooling benefits associated with it as well. I have not been
able to find and info about how many parts NOS you'd add (and I know
that it will obv. vary with the amount of powerr you're looking for),
but I was wondering if anyone had some sort of avg % similar to the
15:1 gas/air above?

Thanks,
Ken
wirelessguy@optonline.net

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Juhan Leemet
Guest





Posted: Sat Nov 27, 2004 3:17 am    Post subject: Re: Is there a site that describes how an engine (REALLY) wo Reply with quote

On Fri, 26 Nov 2004 08:46:45 -0800, Ken wrote:
Quote:
Before people start poting answers about going to howstuffworks.com I
was wonding if anyone could answer this question or show me where I
can find out more info...

The standard Gas engine burns 1 part gas to b/w 12 and 15 parts air.
The Hydrogen in the gas is actually a small part of what's getting
burned.

Since air is primarily made up of nitrogen (78.09%) and oxygen
(20.95%) and we're using say 15 parts of that compared to one part gas
(which is Carbon/hydorgen) it looks like we're burning much more
Nitrox than even Hydorgen. Can anyone tell me what makes the engine
go? (Is it primarily the Nitrogen? Hydrogen?) I know that the Oxy is
nec. for the ignition to even occur.

You really would do better googling around for (lots! of) stuff.

In summary, it is the expansion of heated gas that "makes the engine go",
by converting chemical potential energy to mechanical kinetic energy. Both
volume of gaseous materials (increased) and heat are produced by the
combustion of gasoline, using the oxygen in the air. The N2 is just "along
for the ride", but unfortunately because of heat and pressure takes part
in some weird reactions to produce NO2 and other noxious stuff. All gases
in the cylinders (CO2 N2 NO2 etc.) are heated by the combustion and used
to push pistons for mechanical energy.

Quote:
Bonus question:

I'd like to understand more about what we are actually 'burning'. I
know that adding NOS to the mixture is not nec. the best thing b/c
you're really just increasing the BANG and Power of each stroke (which
shouldn't get confused with adding speed/RPMs). I know that NOS also has
some cooling benefits associated with it as well. I have not been able
to find and info about how many parts NOS you'd add (and I know that it
will obv. vary with the amount of powerr you're looking for), but I was
wondering if anyone had some sort of avg % similar to the 15:1 gas/air
above?

The only real burning going on in a normal car engine is the gasoline
(long chains of lots of C and many more H atoms) using O2 as oxidant.

I believe the way NOS (formula?) works is by providing additional oxydant
in the form of loosely bound oxygen in the NOS molecules. Right? That
means you can put in more gasoline, and produce even more gaseous
combustion products and therefore get more "push" (up to the point where
your engine blows up, from over pressure? it is like a "controlled bomb").

--
Juhan Leemet
Logicognosis, Inc.
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RSCamaro
Guest





Posted: Sat Nov 27, 2004 8:38 pm    Post subject: Re: Is there a site that describes how an engine (REALLY) wo Reply with quote

On 26 Nov 2004 08:46:45 -0800, wirelessguy@optonline.net (Ken) wrote:

Quote:
Hi,

Before people start poting answers about going to howstuffworks.com I
was wonding if anyone could answer this question or show me where I
can find out more info...

The standard Gas engine burns 1 part gas to b/w 12 and 15 parts air.
The Hydrogen in the gas is actually a small part of what's getting
burned.

Since air is primarily made up of nitrogen (78.09%) and oxygen
(20.95%) and we're using say 15 parts of that compared to one part gas
(which is Carbon/hydorgen) it looks like we're burning much more
Nitrox than even Hydorgen. Can anyone tell me what makes the engine
go? (Is it primarily the Nitrogen? Hydrogen?) I know that the Oxy is
nec. for the ignition to even occur.

Gas expansion

Quote:

Bonus question:

I'd like to understand more about what we are actually 'burning'. I
know that adding NOS to the mixture is not nec. the best thing b/c
you're really just increasing the BANG and Power of each stroke (which
shouldn't get confused with adding speed/RPMs). I know that NOS also
has some cooling benefits associated with it as well. I have not been
able to find and info about how many parts NOS you'd add (and I know
that it will obv. vary with the amount of powerr you're looking for),
but I was wondering if anyone had some sort of avg % similar to the
15:1 gas/air above?

Nitrous uses the same principles as fuel only the nitrous is the
oxidizer. You still need to add the correct amount of fuel to the
mixture or you'll come down with a terminal case of melted engine.
The cooling benefit is from the liquid boiling off and taking the heat
out of the air.

...Ron
Quote:

Thanks,
Ken
wirelessguy@optonline.net

--
68' Camaro RS
88' Firebird Formula
00' Mustang GT Vert

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