Forced induction by other means

[SoloSK71]

Originally Posted by Bell040

So there are O2 injection systems out there?

No commercially available systems, but yes, it has been done as proof of concept.

Originally Posted by Bell040

I didnt think about that... I figured that there is actually a vacuum in the intake from the valve inlet cycles, so the pressure gradient would keep the air from reverse flowing through the filter.

But yea... if the pressure was increased to >14.7 psia, then I can see how reverse flow would be a problem.

also, could you explain the nitrous part a little better? I am not familiar with nitrous at all. Are you saying that the pressure is not increased in a nitrous system? ... just the combustion chemistry?

Correct. Nitrous is injected as a spray (liquid) into the airstream. Pressure increase, if any, occurs after combustion.

Originally Posted by speedster

This and similar questions have been around hot rod shops for decades. The quick answer is that pure oxygen is inherently "too much" for an internal combustion engine to handle without a precise method of introducing it.

To make it a little easier for you to see how volatile this would be, think of injecting Liquid Oxygen in. BOOM !!!

Very cool in theory, but crazy in a practical application, hence Nitrous and/or FI.

Great question. You're definitely thinkin' - there must be a way to make my Camaro faster!!...

Remember, oxygen (pure gas and LOX) does not 'explode' it just combusts at a very fast rate. An insanely fast rate in the case of LOX, and the combustion rate plus heat released causes what you saw. A sufficiently fast and precise injection system could be made to work. Maybe not in a reciprocating type system, maybe only in a turbine one but it could work.

And the colour is pretty nice also.

- SK

[14pilot]

A supercharger that is powered by exhaust gas pressure waves?