NITROUS OXIDE ( nos / n2o ) advice forum

oh hang on.... (Maybe) Above a certain level of N20 injection does the cooling effect from the rapid expansion of the N20 get balanced by its compressive effects on the other gasses in the cylinder? I.e. a net temp increase of zero??

I forgot about the piston compressing the charge

Easily done.

[quote="NoswizardSo is the exothermic energy release of the N20 into Oxygen and Nitrogen large enough to a) Heat up the Nitrogen to do work leaving
MOST CERTAINLY and it 'seems' to be FAR MORE than normal combustion (which is potentially why we break things when trying to push higher with nitrous than we do when using a turbo etc.) - take a look at the graphs on the site link provided in an earlier post.

[/color] [/quote][/quote]

Is there a Chemist in the House????

Ok. So the reaction (combustion) between Hydrocarbons molecules (fuel) and Air (Nitrogen and Oxygen) will produce a left over amount of energy 'x' which works on the Nitrogen to cause the gas to expand.. This amount of energy per molar mass should be calculable surely?? It will be pressure/temp dependant obviously.. And assumptions will need to be made about homogenious fluids etc. But a close guestimate at least.

I remember working on Carnot cycles but haven't done so for a while..

The same can be said for the energy released per molar mass for the Dissociation of N20 into Oxygen and Nitrogen...This reaction causes an energy release 'Y' and from what Trev suggest from his observations Y is much greater than x

One should be able to calculate the increase in temp on the Nitrogen between the two different reactions??

I'm sure it is calculable but as I've actually seen the results on a graph based on info from an in chamber pressure sensor, I KNOW it's more and by a substantial amount and for now that's ALL I need to know.

BTW there is a thread on here somewhere where the force of dissociation is compared to a substantial amount of TNT or similar.

TNT )))) I could be dead wrong with the following statement but hey ho..

I'm not that hot on chemistry but I think the energy released from breaking down (exothermic) the chemical (electron bonding) between hydro-carbons molecules is mostly abosorbed creating bonds (endothermic) between the freed carbon (from the fuel) and oxygen (from the air).. what's 'left over' heats up the Nitrogen (from the air) giving you the force on your piston..

Compare that energy release from combustion of fuel and air to your "theory" (I say theory that in brackets because you've shown experimental proof) about dissociation of N20 where breaking down the chemical bonding of this molecule into its constituents (exothemic), leaves much more energy to heat up the freed Nitrogen (giving a larger force on the piston due to larger expansion of Nitrogen gas.) Is this because the chemical bonding of the di-atomic molecules of Nitrogen gas and Oxygen gas takes less energy than forming the Carbon Monoxide / Carbon Dioxide molecules from the Air/Fuel reaction resulting in more net or left over energy which the nitrogen can absorb causing it to expand.
????? What im struggling with is dissociation an NOx formations....

BTW clever bods... if what I've just spat out is all a load of b.s. please let me know...im an engineer not a chemist...

Isn't TNT used as a baseline to describe the explosive power of Nuclear Weapons?? LOL

I'm no chemist either, so I can't answer that one for sure but there is NO formation of NOx associated with the dissociation of nitrous unless it's also part of the combustion process, as it currently is but won't be if my THEORY works.

BTW I'm not the only one to be aware of the potential to use nitrous oxide as a mono propellent in an engine but as far as I'm aware I'm the only person in a position to do anything about it to prove if it works or not and if it works, if it can be controlled without it destroying either the engine or the operator.

If you hear of my death whilst carrying out some R&D, chances are it'll be due to working on this project.

Hey Trev any news/progress on the Semi Sealed induction concept?? The last post I read said you had a toy available to test the ideas out on??

Not sure what toy you're referring to but we're making progress with the prototype and hope to be track testing it before the end of the race season.

TOY= Busa in Finland

OK with you now but before we can 'play' on the 'toy' we have to create the prototype of the system.

Even the simple option of that is a relatively major process but we're making progress.