18 sept 2014 last updated.
This not just another opposing piston engine.
This one has the best valve system.
He is actually using a sleeve valve concept to open the valve from the TOP when the piston is close to TDC.
This is a four-stroke opposing piston engine !!!!!
He also is talking about variable compression ratio.
What that actually means is more thermal efficiency , less noise . and a bunch of other cool stuff.