A small displacement engine with an Oxygen concentrator when power is needed?

[oil pan 4]

Problem with a turbo charger on a gasoline engine is its always on. Always hurting fuel economy.
Now if it were a diesel, put a turbo charger on and see at least a 10% gain.

You can use water methanol as fuel for your wet shot, but then you have and extra fuel system to drag around.

Adding nitrous would be much easier than adding an electric motor.

[Cobb]

Ive talked to the water/meth injection people. They say the small system 3 qts of fluid would last 10 gallons of fuel. They also say for best performance use a 50/50 mix of methanol and water. You can use a mix of Heet and rubbing alcohol, certain windshield washer fluid that has a high VOC warning and their special fluid.

[Big time]

Originally Posted by kafer65

Even if you could get enough volume the high oxygen concentration would make the fuel charge burn so much hotter that you may burn through a piston. Think oxy/acetolene torch. Even with NOS (which is used for its enriched oxygen content, NO4 I think) is still buffered somewhat by the Nitrogen. You may be able to stiffle the excess heat by enriching the charge with a bunch of added fuel, but I agree a turbo would be more efficient and it compresses air which is about 3/4 Nitrogen anyway. Smartcar turbos are tiny and used on mopeds for boost.

Good point.

To prevent engine internal parts from melting and to reduce the O2 concentrator size maybe just SOME extra Oxygen is needed to be mixed with air?
Maybe just enough to double Oxygen content from about 21% in the atmosphere to about 40% for the engine?

[Big time]

Originally Posted by oil pan 4

Problem with a turbo charger on a gasoline engine is its always on. Always hurting fuel economy.
Now if it were a diesel, put a turbo charger on and see at least a 10% gain.

You can use water methanol as fuel for your wet shot, but then you have and extra fuel system to drag around.

Adding nitrous would be much easier than adding an electric motor.

You can either disconnect the supercharger with an electric clutch, like air conditioning.
Some centrifugal superchargers and most turbo compressor stages allow the engine to breathe thru the compressor wheel even if it is not moving.

[Big time]

Originally Posted by oil pan 4

I think a wet shot of nitrous would be better.

Nitrous is expensive and not as readily available as pump gas.

[oil pan 4]

Originally Posted by Big time

You can either disconnect the supercharger with an electric clutch, like air conditioning.
Some centrifugal superchargers and most turbo compressor stages allow the engine to breathe thru the compressor wheel even if it is not moving.

Supercharged Toyota MR2 has this.

If you want to increase oxygen content nitrous oxide is the way to go.

A nitrous kit is going to be easier to get than an electric traction motor system that does not exist.

[serialk11r]

Originally Posted by Big time

Good point.

To prevent engine internal parts from melting and to reduce the O2 concentrator size maybe just SOME extra Oxygen is needed to be mixed with air?
Maybe just enough to double Oxygen content from about 21% in the atmosphere to about 40% for the engine?

Doubling the oxygen content is a serious proposition. That's like running pure N2O in place of air, and that would burn your engine up without a doubt. Plus, remember that at full throttle and 6000rpm a 2L engine can ingest 100L of air per second. How are you going to store that much oxygen onboard?

An oxygen concentrator is probably too big and heavy to be of practical use like this. However it could be a cheaper substitute for nitrous if you have one plus a compressor. Since oxygen is gaseous you probably can't store as much though.

If you have confidence in your ability to build an oxygen + auxiliary fuel injection system that won't fry your engine then yes, this could be a good way to get a power boost for street or drag racing use. Have a small tank with a tiny O2 concentrator + tiny compressor and store a few liters of oxygen at maybe 5 bar, which is not too dangerous.

[Cobb]

You can get oxygen or NOS at most gas vendors. You can fill up your NOS bottle at most performance shops.

I think they told me a 10 lb tank gives like a 90 second spray.

You can also pop the belt off most super chargers too and the vehicle will run just fine. Some recommend doing this til you can get the vehicle to get a tune.

[oil pan 4]

A 10lb tank will give you 3 or 4 quarter mile passes running a 100hp shot on a car that can do a 11 or 12 second quarter mile.
So if you ran a 25hp shot a 10lb tank cold spray for maybe a little over 2 minutes.
Biggest tanks go up to 20 or 25lb.
The thing with nitrous is you only spray it a wide open throttle and above 3000 to 3500 rpm.

It would be about like running a cheater system but with a huge overt nitrous bottle instead of a small hidden one.

An ecomodder car with nitrous. I would like to see that.