[Patrick]

Originally Posted by NeilBlanchard

Here are some other rotary engines:

Green Car Congress: UK LowCVP Launches ?Technology Challenge? to Accelerate Low Carbon Vehicle Innovation; Libralato Engines First Registrant

Green Car Congress: Concept Engines

Wow that Garric engine looks absolutely magical. The compressed gas suddenly moves from one side of the piston to the other before it's ignited. And what are they using to control the gates? The forces on those must be incredible since the gasses are compressed against them. And how are they sealing it? It's a cool animation, though. GARRIC Engines - The future of internal combustion engine design