My half baked FI idea (not electric supercharger)
Re: My half baked FI idea (not electric supercharger)
That big *** bottle of air might work a lot better if you were to inject it directly into the cylinders, in-sync with the compression strokes (shoot a quick burst of air into the cylinder as soon as the intake valve is seated)... but that would be a monstrocity of a challenge in itself. Then talk about the process of getting enough fuel in there to burn with all the added oxygen.
Hell, while your at it figure out how to do this with nitrous. A direct-injection fuel/N2O setup could be made for some KILLER power.
Hell, while your at it figure out how to do this with nitrous. A direct-injection fuel/N2O setup could be made for some KILLER power.
Re: My half baked FI idea (not electric supercharger)
I think that if you get one of those huge compressed air tanks, it might work. I'm talking about one of those things that looks like a scuba tank, but taller.
You could use a -4AN hose fitting and pump it directly into one of the fittings on the intake manifold. It'll make the intake charge nice and cold as well. However, you're back to the problem of why not just use nitrous then. Not to mention the fun of trying to regulate a huge psi to run on your engine. Also good luck fitting that tank in the car and hauling the extra 100+ lbs when empty, let alone full.
You could use a -4AN hose fitting and pump it directly into one of the fittings on the intake manifold. It'll make the intake charge nice and cold as well. However, you're back to the problem of why not just use nitrous then. Not to mention the fun of trying to regulate a huge psi to run on your engine. Also good luck fitting that tank in the car and hauling the extra 100+ lbs when empty, let alone full.
Re: My half baked FI idea (not electric supercharger)
If you could find some way to make a "spark plug" that could act as an oxygen injector and a spark mechanism in one piece, then that would be the trick. I'm sorry, but if you really want some oxygen injection method to work right, then you're going to have to find a way to get it directly into the cylinder by means of direct injection. Shooting air from a tank into the intake manifold won't do much good since the most critical pressure differentials exist between the cylinders and the manifold... and not the manifold and the outside air. Let those thousands of psi in the tank work for you in a direct injection method. Having 30+ psi of fuel and air/nitrous in the cylinder right after the intake valve closes will make a huge improvement in power. Just grind a cam to move the IVC event a little earlier and push the combustion mixture in there with the tank's pressure to make maximum power. Sure, you'll give up a good bit of power this way when the system is off... but DAYUM when that thing is armed at WOT!!!
I wish it were more simple in reality though. If a direct-injection method like this could be perfected for the gasoline engines we know on the streets today, all the imperfections between a 23* head and a 11* head would become a moot point. Just inject a fuel/air/nitrous mixture directly into the cylinder and most of the work is done for the system without the need for complicated and expensive heads, cam, valvetrain components, etc.
Hmmm, i'm thinking about making a post in the advanced tech forum about this to see what those guys have to say....
I wish it were more simple in reality though. If a direct-injection method like this could be perfected for the gasoline engines we know on the streets today, all the imperfections between a 23* head and a 11* head would become a moot point. Just inject a fuel/air/nitrous mixture directly into the cylinder and most of the work is done for the system without the need for complicated and expensive heads, cam, valvetrain components, etc.
Hmmm, i'm thinking about making a post in the advanced tech forum about this to see what those guys have to say....
Re: My half baked FI idea (not electric supercharger)
Why not just run a small cylinder of liquid Oxygen, and supply it thru a fogger nozel with the correct amount of additional fuel. Would probably burn pretty hot and be hard to control. But think of it, all the power adders are doing is putting more oxygen and fuel in the combustion chamber, so why not just use what your trying to get in there by other means. LOX
Re: My half baked FI idea (not electric supercharger)
Wow, these is getting pretty intense. Pure oxygen, I can't believe I didn't think of that. Wouldn't 100% O2 make more power than nitrous, as nitrous is also has nitrogen, which I assume doesn't combust as redily as oxygen. I'm thinking fill up tank with liquid oxygen and direct port that into the cylinders.
Re: My half baked FI idea (not electric supercharger)
Originally Posted by Beyonce Knowles
Wow, these is getting pretty intense. Pure oxygen, I can't believe I didn't think of that. Wouldn't 100% O2 make more power than nitrous, as nitrous is also has nitrogen, which I assume doesn't combust as redily as oxygen. I'm thinking fill up tank with liquid oxygen and direct port that into the cylinders. 

Re: My half baked FI idea (not electric supercharger)
Originally Posted by Beyonce Knowles
Wow, these is getting pretty intense. Pure oxygen, I can't believe I didn't think of that. Wouldn't 100% O2 make more power than nitrous, as nitrous is also has nitrogen, which I assume doesn't combust as redily as oxygen. I'm thinking fill up tank with liquid oxygen and direct port that into the cylinders. 

oh yeah. oxygen itself isnt flammable. it dramatically increases combustion.
pretty sure nitrous gives a lot of power due to the cooling effect too. but im not into nitrous......
Last edited by ss#1230; Feb 22, 2005 at 01:04 AM.
Re: My half baked FI idea (not electric supercharger)
Haha, its funny you guys should talk about injecting O2 instead of N2O- I just did a report on this for my combustion class. There are two main reasons why people don't inject O2-
First, you would have to inject it in liquid form to get any realistic gain due to the density of oxygen air being so low. This is also the reason why nitrous is injected as a liquid which is then quickly vaporized. Liquid oxygen is EXTREMELY reactive, with just about anything. Handling it is very dangerous, and requires a ton of special equipment to make sure it doesn't combust with everything it touches. Liquid nitrous is not very reactive at all, and if it spills from your tank, it won't create a dangerous situation.
The second reason is this: the boiling temperature of liquid oxygen is -297 F, while liquid nitrogen boils at -130 F. It would be pretty damn hard to keep oxygen as a liquid (it would have to be at ridiculously high pressures at say 70F), much harder than it would be to keep nitrous as a liquid in your tank.
So those are the main reasons... plus, seeing that you can get 500+ hp from nitrous injection, I don't think that anyone needs to be looking for another injection method that will give more power than nitrous.
First, you would have to inject it in liquid form to get any realistic gain due to the density of oxygen air being so low. This is also the reason why nitrous is injected as a liquid which is then quickly vaporized. Liquid oxygen is EXTREMELY reactive, with just about anything. Handling it is very dangerous, and requires a ton of special equipment to make sure it doesn't combust with everything it touches. Liquid nitrous is not very reactive at all, and if it spills from your tank, it won't create a dangerous situation.
The second reason is this: the boiling temperature of liquid oxygen is -297 F, while liquid nitrogen boils at -130 F. It would be pretty damn hard to keep oxygen as a liquid (it would have to be at ridiculously high pressures at say 70F), much harder than it would be to keep nitrous as a liquid in your tank.
So those are the main reasons... plus, seeing that you can get 500+ hp from nitrous injection, I don't think that anyone needs to be looking for another injection method that will give more power than nitrous.
Re: My half baked FI idea (not electric supercharger)
Originally Posted by Beyonce Knowles
I'm thinking fill up tank with liquid oxygen and direct port that into the cylinders. 

Have you considered filling the car with helium to make it lighter?
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