Kugel is German for "ball"

So, I found this really cool engine 2 weeks ago. I read about it in a couple of articles (that I couldn't count as an article for RC because they weren't over 750 words) and I found it really interesting. I'm still a little confused on the whole mechanics of it all but I'm going to start searching up more articles about it and get a better understanding. So, the engine was designed by Dr. H üttlin and his team and was displayed at the Geneva Motor Show in 2011. He named it the kugelmotor because kugel is German for ball and the engine itself if a spherical engine. My understanding of it, so far, is that the engine's spherical design gives you the milage of a hybrid engine and runs on almost any fuel. Like I said, I still don't fully understand the mechanics of it. I just thought it was a really cool concept for an engine.

Here are a variety of pictures of the Hüttlin Spherical Engine