Revetec cam-drive

The Revetec cam-drive engine uses a pair of counter-rotating scissor cams instead of a crankshaft. The result is three times more torque than a conventional engine, and an overall engine efficiency up to 50% more.

REVETEC Limited is a design engine company and developer of the "Controlled Combustion Engine" (CCE). The CCE is an internal combustion engine that is lighter, cleaner and more powerful than equivalent conventional engines, and cheaper to manufacture, due to fewer components.

http://www.revetec.com/