Also, what's a quasiturbine? some kind of hybrid gas turbine which is efficient at low revs?
Not it's a bit like a Wankel engine, but it has a 4 sided rotor, the sides of the rotor are not fixed, but hinged.
Due to this the Rotor doesn't need to be offest from the drive shaft, thus it has 0 vibration and is more efficient than a Wankel, though it has similar problems.
The name, IIRC, derives fromth e fact that the design team started with the concept of the Gas turbine, and slowly developed and evolved the idea. It's quite remarkable, if there is any future in IC engines, this has to be it.