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O2 injection... has it ever been done?

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Old Mar 24, 2003 | 09:12 PM
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SMOKNZ's Avatar
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O2 injection... has it ever been done?

I was thinking the other day that all the mods we do on our cars have to do with getting more airflow (more O2) into the motor via different ways like Forced Induction or utilizing cams and ported heads or chemically utilizing N20. Has anyone ever tried utilizing o2 injection in a system like a nitrous setup? No i'm not going to do this on my car, but was just wondering if it was possible. I know Oxygen vigerously increases combustion, but is it to hard to regulate? What do ya think?
Old Mar 24, 2003 | 09:33 PM
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Pick up the latest issue of Car Craft (May 03). Someone asked the same question in "What's your Problem?"

The responce is (cliff notes), you'll blow yourself up. Introducing pure O2 to the A/F mix would make combustion difficult to control. N2O, on the other hand, requires the heat of combustion to separate its molecules, meaning that pure O2 molecules aren't released until you need them. (this is basically what the article says)

I mean, O2 is flammable by nature. If you injected O2 into a cylander, just the heat of the block, exhaust gases, or pistons would cause the O2 to ignite, causing problems (probebly a bit more than just detonation ), whereas the N20 goes in cold, stays cold, then the high temps from combustion cause the O2 molecules to separate, giving us power that is safer and more controlable than pure O2.
Old Mar 25, 2003 | 06:01 AM
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Thanks for the insight!
Old Mar 25, 2003 | 08:26 PM
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Originally posted by TheV6Bird
Pick up the latest issue of Car Craft (May 03). Someone asked the same question in "What's your Problem?"

The responce is (cliff notes), you'll blow yourself up. Introducing pure O2 to the A/F mix would make combustion difficult to control. N2O, on the other hand, requires the heat of combustion to separate its molecules, meaning that pure O2 molecules aren't released until you need them. (this is basically what the article says)

I mean, O2 is flammable by nature. If you injected O2 into a cylander, just the heat of the block, exhaust gases, or pistons would cause the O2 to ignite, causing problems (probebly a bit more than just detonation ), whereas the N20 goes in cold, stays cold, then the high temps from combustion cause the O2 molecules to separate, giving us power that is safer and more controlable than pure O2.

That's what cause the Apallo 11 or 13 mission to go bad. Extremely volitile in compressed form and not something to mess around with unless you have experience.
Old Mar 26, 2003 | 09:13 AM
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Now wait a minute, Its been a few years since I've had any chemistry, but IIRC oxygen itself does not burn, not without the presence of fuel anyway.

Without a corresponding amount of fuel all you'd do is significantly lean out the mixture and probably detonate the engine into oblivion...but pure O2 w/o fuel in it would not ignite on its own, it simply creates an extremely unstable environment for stuff that is flammable.
Old Mar 26, 2003 | 09:44 AM
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Just like N20, it'd have to be in liquid form (LOX) in order to store enough of it and get it to your engine without using sewer-pipe-sized plumbing.

And, no, O2 doesn't burn without fuel - but to LOX, just about anything looks like fuel. Nasty, nasty stuff.

Stick to N20 - at least it's about 30% O2, which is half-again as good as air.
Old Mar 26, 2003 | 01:05 PM
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Originally posted by Eric Bryant
And, no, O2 doesn't burn without fuel - but to LOX, just about anything looks like fuel. Nasty, nasty stuff.

And that's why we got "Ahhh, Huston, we have a problem." Back in the 60s.
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