Kind of interesting Wave Disk engine prototype
 

At first glance bares some resemblance to a rotary engine. Has no valves, no pistons, no radiator doesn't even need a trans! Interesting concept, they are making some strong claims, wonder if it can be proven, 60% efficiency and 90% reduction in emissions! Looks like a match made in heaven for a electric motor hybrid, so compact an lightweight:
http://www.blogcdn.com/green.autoblo.../wave-disk.jpg
http://green.autoblog.com/2011/04/08...-future-video/

Here's a full text paper on the concept.

http://versita.metapress.com/content...6/fulltext.pdf


Jim