This is what happens when a turbo and a piston engine decide to switch jobs.

    The Turbocombustion Engine is 80% efficient. That is twice as efficient as the best production engines available today.  This engine's website has some amazing graphics that show how the motor works. Basically combustion takes place...

Wow this is really hard to explain, go to the website and take a look for yourself. I sat and watched for about a half hour.

http://www.tcengine.com/

Features

1. For every rotation the engine goes through a complete cycle.
2. There is a piston inside whose only job is to compress the fuel (any type of fuel) and then the power stroke takes place in a turbo like setup surrounding the piston.

3. This engine is an official contender for the Progressive Automotive X Prize which awards 10 million dollars to the first person to make a 100 mpg car mass produceable.