pure O2 injection?

[gr8unknown]

I've gotten a variety of answers to this question, none from anyone who has ever tried this, or even engineers who would possibly know. What would happen if you ran pure O2 from a tank into your air intake hose? I know this would displace regular air with a more combustible gas, it would also be very cold. Your O2 sensors would probably sense the rich air and send more fuel (on fuel injected engines). Would this be dangerous? If you don't really know the answer there is no need to respond.

[higgimonster]

Well, on top of the fact that if you got into an accident or something went wrong with the tank you would be completely incinerated Oxygen is just too damn flamable and burns too hot for safe use.

Because pure oxygen would create such violent combustion that it would be uncontrollable, and the engine would grenade with just a little bit of oxygen. The nitrogen atoms act as a buffer to soften the combustion process—they slow down the combustion to a controllable rate.

[SaabJohan]

O2 can be used but it shouldn't by safety reasons. Also, the speed and temperature (around 50% higher than with air) of the combustion will increase stress in the engine.

The O2 sensors will not compensate with fuel for all that extra oxygen.

[911GT2]

You'd have to be bloody insane. That and there's two reasons that NO2 is used:
1) Denser oxygen!!!
2) Also has excellent cooling properties. And as we all know, cooler is better for compressed gases.

And it's ridiculously flammable to boot.

[Gasoline Fumes]

What about ozone?

[higgimonster]

Originally posted by Gasoline Fumes
What about ozone?

I assume you mean compressed air. That would be interesting though why bother. You would have all of the same equipment as a NOS system so why not just use N2O.

[911GT2]

Ozone is O3 for anyone wondering, not just compressed air. And it wouldn't make any sense. It's reactive with CO2 and other greenhouse gases.

[higgimonster]

well, back to my compressed air thought: check this out:
www.theaircar.com

[BeEfCaKe]

Ozone(O3) is one of the components of our upper atmosphere, if it weren't for ozone, we'd probably wouldn't be here. Ironically enough however, it is an air pollutant in the lower atmosphere, and makes up smog which accounts to many deaths during hot weather. So this is probably one of the reason Ozone would not be used.

Oxygen, as others mentioned before, creates high combustion temperatures, and would cause more heat on the engine(not a good thing). Excessive heat is never good.

Nitrous Oxide is N2O by the way, in other words, laughing gas, the anesthetic doctors use.

[sciguyjim]

As hot and touchy as oxygen is, ozone is much worse. It would not wait for high temps or pressures to begin burning. It would start on contact with anything flammable. Even storing more than small amounts of ozone is dangerous, even at super cold temps. Where do you think you would get it? NASA doesn't even use ozone as a rocket fuel!

[1 fast POS]

Originally posted by higgimonster
Oxygen is just too damn flamable and burns too hot for safe use.

Oxygen is flamable ? We better let the people of earth know so that they don't light a match and start the entire planet on fire.

[gr8unknown]

Okay thats what I thought, O2 wont burn by itself, requires fuel of some kind.

[ivymike1031]

O2 won't react with itself (at least not often enough to be noticeable), but it will react with damn near anything else you throw its way.

Aluminum will burn just fine in a pure-O2 atmosphere...

[sciguyjim]

I suppose if someone wanted to take the chance, and had the appropriate equipment specially designed for use with oxygen, they could probably add just enough oxygen to raise its percentage in the air by a couple percent without many problems. I'd only do the experiment with plenty of equipment to monitor combustion temps so I wouldn't melt my pistons, or worse.

[1 fast POS]

I agree with sciguyjim, if you were to raise the oxygen count per cubic foot of atmosphere that your engine consumes you could increase the performance. However just like nitrous you would also need to richen the mixture to balance the air/fuel ratio. A bad mixture could put you over stoiche and quickly destroy your engine. The reason that nitrous works safely is that they have the jets spray proportionally with fuel to insure a safe mixture, and the nitrogen acts as a cooling agent to help prevent detonation and preignition. What you have to realize is that if your air/fuel mixture is near 14.7 parts oxygen to 1 part fuel or higher in oxygen content you WILL destroy your engine. Rich is slow, too rich runs like shit, but it is safe. Lean is fast, too lean is really fast and on the edge of destruction. I think that your car would fly for almost half a minute then the pistons would weld themselves to the cylinder walls and the fun would be over. To sum up my thoughts, it's dangerous to use (risk of fire). Your A/F ratio would be too lean, your cylinder temps would be too high. If you were lucky you would just melt your motor and not kill yourself.