Stirlingengineforum.com

You might be right, you might not be. It's your theory and I have no opinion about that. I just think we can do better than a pulsating/resonating engine. I think we can make an engine that produces peak power all the time in stead of half or less. But that might not be a discussion for this topic. ...

Fair enough, you're entitled to that opinion.
I have nothing invested in this, was just trying to show some other info.
I don't think I understand piston engines and especially Stirling engines enough. It's still feels like crude old tech to me.

I don't understand how you get to the conclusions about the timing. I've been over the patent again and have a different understanding of it. I just want to clarify that I'm not trying to prove anything here. I'm merely trying to provide more data to study your theory and am discussing the way to in...

Rotary Valve Mechanism Another design feature that is possible because of the rotary displacer is a rotary valve integral with the first displacer segment and the adjacent portion of the housing. This arrangement does not add additional moving parts, but it effectively directs the working fluid in ...

In essence it's still the same thing. It shuttles around air from a hot to a cold side to power a piston. At any and all times during the cycle there's a full port/valve/conduit/opening to the power piston. It just changes sides. They had to do this because it's a rotary displacer, how else do you k...

Ok the ports or valves don't really matter. What I was getting at was that it doesn't matter as one of them is open at all times and there's nothing else stopping flow. So the power piston is always open to the displacer. Either with the hot or the cold port/valve. So I think it still is a Stirling ...

I don't know. They're ports, not valves, and it's still a fully open system. So the piston is always open to the displacer, the side just changes. This creates a flow direction, that's all.

The open port side changes when the displacer is half way between the hot and cold side.

Looks impressive! I wish I had a workshop like that.

I don't know if that drawing is true to timing and all. Or just a schematic.
I think you should read the whole thing in the link with all the pictures.
It's just a bit unfortunate that there aren't any output figures except rpm.

I used to think it had something to do with the regenerator. My thought was that it works as a timing enhancer. It basically starts heating and cooling the fluid sooner in the cycle.

But I never had the chance to experiment with that yet. Just a thought experiment.

I had a sudden moment of clarity hehe, found the extra info.



https://patents.google.com/patent/US20110061378

They aren't so much drawings but very detailed pictures of the build-up.
Hope this helps.

Fair enough. The spacing is not too bad.
Sounds like it needs a bit of work still.

I received the eBay Tesla turbine. I'm not impressed. Turning it by hand it I can actually feel the bearings grinding. It has a lot of resistance and takes considerable psi to get it to start. Quite a bit of sideways play in the rotor. Once it gets going at highish speed, (just blowing air through ...

Looking at what I assume would be the valve or port opening or uncovering mechanism on one of the displacer segments, this appears to be offset. That is the open ports would not be directly 180° opposite to each other but actually offset by the width of the port opening. Compress_20240613_131742_28...

https://scholar.lib.vt.edu/ejournals/JO ... oster.html

With this engine they find the most optimal angle is 125 degrees.