this was most relevant to the turbo guys so im throwing my idea in here. would it be possible to directly inject compressed air into the housing?

 

Yes, Mazda experimented with this on their TISC (timed induction super charged) 13B where a high efficiency air pump was used to inject air after the normal ports had closed for a bit of power.

This project lead to the DEI (dynamic effect induction) 6 port induction system where even more efficient dynamic super charging was used to achieve nearly 2psi boost through the aux ports after the normal 4 ports closed.

 

so it has been done. now i wonder if you can used a stored tank to charge from like a nitrous system. i havent completely thought it all out yet, but its just slowly coming along.

 

you would have to be able to put extra gas in there, or you will run it too lean..

why would you use a nitrous tank when you could use like a scba tank, fill it at like firefighting stations, so you would have an extra boost. but honestly cant see this being nearly as efficient as just a supercharger.

 

If you are going to all the trouble to include pressurized tank and fuel enrichment system...

Why aren't you just installing a nitrous injection system?

 

i was just pondering about the idea. with my microtechs aux ports i can control the extra gas that would be needed.

and nitrous hasnt won me over yet, so no go.

 

Not trying to be Captain Obvious, but what do you think injecting nitrous does? It injects extra oxygen while simultaneously cooling the charge, their by making the air charge denser, making more power. all you would be doing is adding a little extra oxygen without the cooling effect. making only a slight difference but with all of the added headaches.

You might as well go with Nitrous as the benefits to cost ratio is between what you are proposing and nitrous are immense. remember you can always turn nitrous down, to make it safer less HP whatever.... you will not be able to turn up the air system...

kenn

 

OK -- check my math here, but I think the answer is fairly simple:

Yes, you could inject compressed air into your engine from a tank, but your engine swallows a lot more air than you think. A standard SCUBA tank holds about 80 ft^3 of air when it is released at atmospheric pressure (it occupies 11 liters at 200 Bar in compressed form inside the tank). Assuming your engine swallows 800 CFM, this air would last for 1/10 minute or 6 seconds.

In reality, a turbo 13B probably swallows more than that, so you'd get less than 6 seconds, and that's if you could design a reliable pressure regulator that could handle that volume of air.