[edsheppa]

Here's another interesting one: Quasiturbine

[Chode]

how do they attach the drive shaft??? i looked at the site, cool design but i can't figure it out...

[bmwcyle]

It looks like someone was playing with old brake shoes.

[Gandalf_The_Gray]

Here's another interesting one: Quasiturbine

I saw an almost identical engine back in the '60s, invented by an Indian (east) engineer. He built a working prototype with hand tools on the drainboard of his kitchen sink (I can't make this stuff up!). Anyway the combustion space was defined by something like a square box, hinged along the edges, which was alternately squeezed inward along the vertical axis (horizontal expanding outward) and then contra wise by a camming arrangement. Same mechanism as the engine shown here. Intake/exhaust porting was done thru the side plates similar to a Wankel.

Basically, this design carries the same killer problem as the Wankel, a very large combustion chamber area. The exposed area is much larger then an equivalent piston engine. This means that the combustion process is "quenched" by the cooler chamber, runs more inefficiently, and produces more pollutants. There is no way to overcome that fact, it is inherent in the design.

Regards,
GtG