1 stroke engine…
 

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https://www.youtube.com/watch?v=9I0_3qFmPUM



🤔

Interesting…



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:turtle:

It isn't a 'wavy thing', it's a swashplate.
If he says 'wavy thing' one more time....

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Yeah, I said the same thing…

Lol…


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Interesting concept. However, as the video points out - the company is lying about at least 2 easily verifiable things. What else aren't they telling us as they try to raise money.

TL/DR on the video. The engine has some advantages mainly simplicity, size, and weight. The downside is likely very low torque at high RPM. The most likely applications are as a range extender, airplanes / drones, and generator. Basically applications were small and light is key and RPM is fixed.

I'll add another likely problem which is emissions unless it runs at a fixed RPM.

Technically, it is a 2-stroke... Just with a weird construction.

It's one thing to transmit valve-train forces through a roller tappet; but the engine output through them? It must have more friction than a crankshaft bearing.

edit:
Half an hour and I've changed my mind: 'roller bearing crankshafts' exist.

Reminded me of the opposite-piston 2-stroke layout which used to have its fair share of popularity among Diesel engine manufacturers.