This seems to be a (one more ?) good idea.

http://www.youtube.com/watch?v=5jNVmjdYw7Q

http://www.scuderigroup.com/

a few more videos that explains the system

http://www.youtube.com/results?search_query=scuderi

Now let's see a working prototype...

http://www.youtube.com/watch?v=CGI8zDrGw3M

That is pretty neat! A 4 cylinder engine that uses 2 cylinders for power stroke but on every cycle not every other cycle. The firing after TDC seems to me that there would be a power loss. I wonder how the power per cc would compare to conventional engines.

I only wonder how long the intake valve of the burning chamber will resist. It's stil opened while the plug fires.

If it is made out of ceramic, it should last a very long time.

Zach