Stude, over 40 yrs. ago I designed an engine very similar. The main difference was my design had a single "double headed" piston(piston at ea. end, all one piece) with a combustion chamber at each end with no valves in the chamber. The power take-off was in the center of it fashioned somewhat like a Scotsman Yoke, not a crankshaft as we know it. It also didn't have a cam or intake/exhaust valves, just exhaust ports like the vidoe engine has, however the intake was via injection. The way I designed it, every 360 deg. gave two power strokes from what was essentially a two cylinder engine. It had fewer moving parts than the one in the video.
My problem at the time, I was out of work and had no money. Our patent system is such that it discourages invention and development because of the cost. I couldn't find any investors...honest ones at least, and those that would invest wanted total control. No dice on that, I would have been booted in six months. The result was, I trashed the whole thing, literally cut it up with a metal bandsaw.
At present, I'm messing with an idea for a new design of electric motor. If it works, it should have extremely low power requirements with high output of torque. I have no idea if it will work, but it keeps my mind busy anyway. So, if one day the power grid in the SE part of the U.S. goes down, you'll know I'm running some experiments.
