But when we have a limitless supply of compressed air, in the form of a turbocharger, why would anyone bother with such an idea??? Carrying a heavy bottle, of compressed anything is dangerous, if only from the weight of the damn thing alone.

[Edited by ustolemyname??stevieturbo - 9/7/2002 4:12:26 PM]

 

but surely nitrous could potentially turn a small fire into an explosion far quicker than compressed air due to the O2 content? + from what i can make of this theory,i dont think its the flow rates that he wants-its the temprature drop i think?

[Edited by easyrider - 9/8/2002 11:40:37 PM]

 

NOS can be construed as either an easy way to enjoy huge horsepower gains or an easy way to grenade your engine.

However, a variation on a theme would to be to use compressed air instead of NOS. If you fill up a diver's cylinder with compressed air it heats it up and the cylinder can get fairly hot which is why they are charged slowly and often immersed in in a huge trough of cold water when doing it.

So, when you release the gas the opposite is true......... the gas is really cold. Indeed if you crack open a full cylinder after a short time it freezes and ices over.

My thinking is that to set up an injection system the same as the NOS one and use compressed air it will be much safer, much cheaper and you will still see a lot more O2 in the combustion chamber and therefore more bhp.

The rationale behind this idea is not only safety (for the engine) but you can get 15ltr cylinders @ 232bar = 3480litres of air. Handy for the extra boost when required blah blah just as in the NOS application.

So, makes sense n'est ce pas?

Laters

Ben

 

considering they are two different mixes of gas one will get you high and one will get you even higher (heaven i think)i think you must have left atank of nos open when you thought of this

 

Hmm not too sure that you 2 actually understand physics here. Compressing air heats it up and that is why you have an intercooler to attempt to lower the charge temps. Releasing the compressed air is extremely cold, below freezing and so will amount to a shedload more oxygen.

I too believe that carrying compressed gas is asking for trouble but that is a draw back of NOS.

Maybe the question was a little too technical.

 

I think we do understand, but we live in reality. Releasing something stored under pressure as as a liquid, into a gas does produce a cooling effect. Im not too sure that releasing just compressed air would have that same effect. I'll stick with my turbocharger, and save the Nitrous for sniffing. ( which just sort of makes you go all light headed. If you are sniffing straight from the bottle, watch that bodyparts dont get stuck to the frozen nozzle of the bottle ! )

 

I can see where you are coming from on this idea Light Blues,and it sounds like a very interesting experiment to be done.
I know i would rather have compressed air sitting behind me than Nitrous!

 

Nitrous is safe. It is NOT flammable. The only danger is from the fact it is a compressed cylinder, and that the nitrous is stored under pressure in a liquid form, which could cause burns if it leaked out. ( freezing burns )

 

A 2.0 motor consumes 1 ltr of air every revolution, at 1 bar boost this equals 2 ltr/rev. At 5000 rpm your bottle would sustain the engine for a mere 21 seconds.....that's if you could fit it with a demand valve capable of this sort of flow rate, which i doubt

Top marks for the unconventional thinking though

Andy

 

Im not sure, but I doubt there would be any worthwhile cooling effect, just be releasing compressed air. As I said before, the cooling with the nitrous, comes from the fact that it is stored as a liquid, which then turns to a gas once that pressure is released in the atmosphere or manifold. Compressed air would not go through that change, and would not have that cooling effect.
It is not simply compressed air in a scuba bottle either, although I not sure of the exact content of the gas used for diving.

 

[edited cos I was spouting rubbish]



[Edited by boltona - 9/9/2002 11:53:40 AM]