Just under 15 minutes.

www.youtube.com/watch?v=aIveTlr3hv8

Looks like somebody trying to mess with anyone willing to watch, pure de baloney sauce in my opinion
Having the exhaust valve open on the fourth stroke does not allow a combustible mixture of air and fuel to enter into the cylinders to repeat stroke 3 and 4

Continuing the work Bruce Crower started 20+ years ago.

I wonder if Crower had patents that have expired?

If you doubt or just can't quite grasp Jason's explanation, here's another for you to critique: www.youtube.com/watch?v=tNkAZMvCqng

Good luck!

Talk about brainiacs wasting time and money for minimal gains
More parts, more things to go wrong

Why does that response not surprise............................

.

That's because Cab still hasn't gotten over the fact that they quit making knives out of flint.

Ugga Ugga

Youtube will crash browsers if the settings aren't exactly what they want. That site has been messing with creators payment agreements and subscription lists.
They've gotten almost as bad as tiktok with the shenanigans

I use Linux OS rather than Windows and have none of those problems. I also get NONE of the pop-ups and such on here.

If your apps do not require Windows, anyone would be much better off with Linux as their operating system.

www.techtarget.com/searchdatacenter/definition/Linux-operating-system

https://en.wikipedia.org/wiki/Linux

Well, yeah, it has to be to allow for displacement. You know, kind of like how a vacuum cleaner works. The motor doesn't suck air in, it blows air OUT and that motion causes air (and debris) to be drawn in on the vacuum side. However, you do have a point that, with the piston at the bottom of it's stroke, there is no vacuum created. This is where my comment comes in! For the second compression and power strokes to actually occur, this style of engine will have to use some kind of forced induction. Probably a supercharger since I don't believe a Turbo would work properly here with the exhaust pulses not being even, but I'm sure that could be overcome as well.

Regardless, forced induction will be necessary for that second intake cycle to happen, but I don't think dynamic compression on the second cycle would allow for a very clean or efficient burn. I don't see this being a very smooth or efficient engine.