It was my understanding the Wankel is very powerful with low rpm torque, but was not particularly fuel efficient. Admitadly I know little about the engine but am learning about it. The Otto engine is another strange one.My connection with steam? I just like it. simple and easy to produce. low rpm torque and can be efficient with a good boiler. Quiet operation.
The quasiturbine connection to steam is the engine design can be set up as internal combustion or steam / hydrolic design. lots of different examples on their web site. I need to find some more info on this thing that isn't connected to themselves.
bill