Addressing only single stroke aspiration issue - and only lightly.

> =A0It's still a piston based
> IC engine - their design doesn't make single-stroke any more
> practical, efficient, reliable, or inexpensive than it would be to
> make a "conventional" IC engine single stroke. =A0Am I missing
> something? =A0Does their design make single stroke more useful than our
> current engines, or is that just something they're claiming because
> they don't know any better?

IF you can do single stroke you ~ double power and power density wrt a
2 stroke and ~~~4x wrt a 4 stroke. .
They have an air compressor which they use to aspirate the cylinder
because, as they note, with a single stroke you cannot use the piston
to acquire its own charge.

BUT

I have not attempted to follow their diagrams to see how they actually
propose to do this.

--=20
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