That link is behind a password in a mail system.
Toyman! said:That link is behind a password in a mail system.
My bad. Try this one.
That's pretty cool.
Now I want one for the shelf.
I looks like it maybe solves some issues (apex seals), doesn't others (combustion chamber size and sharp angles) but potentially introduces more (hollow crank and rotor intake / exhaust).
Apex seals aren't really an issue on NA rotaries.
stroker said:
This one's gonna get peanut jokes.
In reply to wvumtnbkr :
Maybe not now, but I remember our RX4 getting a new engine under warranty due to apex seals :) And isn't that why you have to run premix in an RX8?
I think it should work as a high power/weight generator or flight engine. I think targeting the miltary drone market is definitely the right choice. I wonder if they'd be suitable for a hand portable generator as well?
I wonder what the vibration harmonics are like on it. It looks like the.. . Rotor.. CG is more off centered then the traditional Wankel design. Also unlike a Wankel which goes continuously around, the liquid rotor CG appears to move along a triangular path with stops at the tips and changes direction. I could just be looking at it wrong.
It's a cool design though and I hope it works for them. Engines with different thermodynamic cycles are cool.
nocones said:I wonder what the vibration harmonics are like on it. It looks like the.. . Rotor.. CG is more off centered then the traditional Wankel design. Also unlike a Wankel which goes continuously around, the liquid rotor CG appears to move along a triangular path with stops at the tips and changes direction. I could just be looking at it wrong.
It's a cool design though and I hope it works for them. Engines with different thermodynamic cycles are cool.
It's still an Otto cycle. Just uses a different geometry to get the compression and expansion.
Apparently it's an Atkinson cycle - greater change of volume on the power stroke than the intake.
In reply to MadScientistMatt :
Missed that part, but that's also a cycle that has been used quite a few times in the last 30 years, particularly for hybrids. And given some of the cam timing systems we've had, the line between applied otto and atkisnon is remarkably close for piston engines.
I wish it well, but watching the video can see some rather difficult problems that need to be solved before you would ever see it in a car.
MadScientistMatt said:Apparently it's an Atkinson cycle - greater change of volume on the power stroke than the intake.
That is a hair-split. It's still a four stroke Otto cycle.
For that metric, then 6 port 13Bs, any rotary ported by a doofus, and any engine with a camshaft selected by the "bottom of page" method, are all "Atkinson" engines 
Pretty interesting take on a rotary. I'm interested to know what the oiling requirements are.
I'm also contemplating the heat exchange to the air by passing it through the shaft.
Crazy, it runs as a 4 stroke.
Jump to 7:15 to see it running in slow motion. https://www.youtube.com/watch?v=jLtyNtf9_ew
I'd be interested to see it run when it's not coupled to an electric motor.
#skeptical
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