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has this been kicked around here already? I hadn't seen it. Seems like a good idea on paper and the test stand. I bought a rotary mazda years ago because the idea of round and round without stopping to change direction seemed more logical and efficient than the standard piston engine. (this allowed me to ignore the fact that the mazda rotaries were not renown for efficiency…)
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With combustion at the interface of cylinder top and the plate in rides against. the fact it would have to pressed HARD against the plate, and moving the whole time. Pretty difficult issue.
Like the Mazda rotary had the seals problem..Where the edge of the unusual piston pressed against the cylinder wall. Big issues..
They fixed that seal problem by the mid-70s, it wasn't a problem in cars after that. And actually, most of the "seal problem" was due to the car maintenance regimen (lack of) by (North) Americans compared to the Japanese of the day. Their downfall for cars is their poor fuel efficiency, though rotaries can theoretically burn just about "anything" as fuel. Also have lowish torque, but are easily stacked like cylinders to improve that if fuel $ (from high rpm) is no problem. Wankels are still widely used in places where great reliability and low vibration are major considerations, like small single-engined flying machines.
Looks like an interesting variant on a swashplate configuration. Advantages would be power per unit volume and maybe power per unit weight. Cooling might be an issue. Agree with others on stresses. Maybe good for small engines in leaf blowers, lawn mowers, drones, etc.
Also not entirely dissimilar to your standard axial piston hydraulic pump.
Cheers,
John K
I have to wonder about longevity.
It's interesting, but it strikes me as fragile.
Putting rotation together with downward forces might save parts while adding far more stress on bearings and requiring more precise balance. It may run like a top and end up wobbling like one in a short time.
I wish them luck if they can get the efficiency and power from the technology. I just wouldn't be an early adopter.
-Rod
There ain't half been some clever bastards!
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