dude you realize at 100:1 the fuel would have to be crazy so pre detonation doesn't occur. so you say its going to run on air? air doesnt contain enough oxygen to ignite on its own.

 

I dont think you get it.


-Gasoline engines are typically limited to a ~12:1 compression ratio. They cant use diesel because there is not enough heat in a normal gasoline engine to burn it.

-Diesel engines have to run diesel fuel because if they tried to use gasoline, the gasoline would ignite much before the piston reached TDC, which would destroy the engine. Diesels run around a ~18 or 20:1 compression ratio.

An engine running 100:1 compression ratio would NOT be able to use any type of normal pump gasoline, diesel, or even race gas (110+ octane). It would have to use some sort of jet fuel, or a NASA type rocket fuel which would be able to sustain these temperatures.

 

Fuel could be solved with direct injection...fuel goes into the combustion chamber at the exact moment its needed. If you wanted to get really crazy you could customize the fuel and ignition maps for rpm, load, etc. Even have different maps for performance or fuel mileage. It would be a lot of work to program, but very possible.

 

Few problems with your train of thought.

There are no injectors that could push fuel into an environment with that much pressure.

The fuel would detonate the absolute microsecond it touched the air and wouldn't atomize even a little bit.

The heat and pressure generated would absolutely decimate everything around it.

There are no rings that can seal that much PSI in the cylinder.

How exactly do you comrpess 100 parts of air? Certianly not with any kind of existing motor. None of them are designed to physically create that much compression.

 

I did some research and it turns out the nice folks over in london have developed a way to convert modern petrol engines into air hybrids. I wrote a nice article for it, and thought I would share it with this thread. There is no scientific report on how this is actually done, but I have posted my theory in the article.

Article: How to convert your engine to air hybrid


Converting to an air hybrid engine is very interesting, so how would you convert an engine into an air hybrid?

 

 

The ol mechanical supercharging idea...no turbines or rotors or anything

That idea was long ago abandoned for good reason.

With all due respect, when you make these threads, try to keep in mind "if this stuff is so good, why hasnt it been widely implemented?"

For instance, electrically assisted turbos. The amount of amperage needed to spin up the turbo fast enough (40+ Amps) puts such a huge drain on the electrical system and requires so much supplemental support that it just isnt worth it.

 

I think they still have those electrical turbo chargers for sale on ebay. Obviously those fail. They simply can't push enough CFM to support engines and end up taking away horsepower.

 

those computer fans you see for sale on ebay are not what he's talking about.

he's talking about stuff like this

Thomas Knight Turbo Electric Supercharger - Tech Review - Turbo Magazine

really what qualifications do you have to be "tampa bay's sports car examiner"?

 

I had a thought about instant ignition as well. The idea of the flame possibly entering the injector before it had a chance to close in particular...