I know there have been some other variants of this over the years but imagine this powering a generator for something like a Chevy Volt or as a marine engine.
There have been quite a few of these, going back over 100 years:
They list the Duke axial engine on there too, near the bottom.
This engine seems to have the cylinder block rotating relative to the head, with ports in the head acting as intake and exhaust valves. I wonder how they intend to accomplish the fairly challenging task of sealing the interface between the head and block? Seems like it would be a major source of compression loss.
That’s exactly what I was wondering.
I wonder about wear too.
I’d say the design is DOA unless they can show 200,000 mile reliability. Not only is there a seal problem but the ability to tune the intake and exhaust profiles are extremely limited and that’s what it takes to meet emissions standards. Sadly the reduction of parts often remove tune-ability.
I’ve seen the Almen engine at the AF museum. It looked viable compared to the engines of it’s day. Sadly it never went into production.