This is interesting. Basically, it's an alternative style of rotary engine. Check this quote:
According to Michigan State University, the wave disk engine is about 20% lighter than a conventional engine and significantly cheaper to manufacture – a $500 OEM price for a wave disk generator that could power a car. But like all turbine-type engines, the wave disk engine is probably only able to provide high levels of efficiency when it’s at its optimal speed, meaning that it will likely be most useful to apply the technology to charge the batteries of an electric vehicle, rather than to drive the car alone.
They go on to say that, thanks to a DOE grant, they will have a 25kw version by the end of the year. Lighter is better when it comes to vehicles, particularly when it comes the engine and not something like the car's frame. Anyway, my real point is that one of these could replace the electricity generating engines like the type used in the Chevy Volt.
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