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[dreadnought72]

http://doylerotary.com/overview.php

Engineering like this makes sense to me.

No/low vibration, fewer parts, separation of compression/ignition stages, better buring of fuel: what's not to love? 

Andy

[Mad_Mike]

as an alternative to the traditional rotary engine layout i can understand why this is a lot better. But how the oscilating of the pistons is transfered into rotary motion, by the piston ramping themselves up the side walls. The rpms of this engine would be astronomical but at the cost of massive amount of useable torqe.

Just my oppinion

[essex2visuvesi]

The rpms of this engine would be astronomical but at the cost of massive amount of useable torqe.

Just my oppinion

Not dissimilar to the Wankel creation then. I had an RX7 (FD series) a few years back and you had to give it some revs to make it go well, but once you got the hang of it it was one fast car

So would you say this is a rotary or a radial engine?

[TailUK]

Wouldn't all the lubricating oil be spun to the inside of the casing causing the pistons to run dry?  Also if the cylinder banks and the casing are spinning non-concentrically wouldn't there be increasing vibration as the revs increase?

[Mad_Mike]

presumably the casing in which the pistons spin would be within a stationary casing mounted to the chassis, kind of like a washing machine. Now once the oil has gone threw the pistons and spun to the outside i would guess then that the oil collects at the bottom and then plumbed back to the centre of the engine, thus cylcling threw constantly. If there was no air gap between the piston casing and the outercasing the centrifugal forces would actually create pressure in the plumbing, completely eliminating the need for an oil pump too.

I dont think that the vibrations would increase actually. the weight of the pistons ony shift in one direction, ie when the engine is turning clockwise the pistons going over the top are in the power stroke, the pistons opposite the ones in power stroke are in compression stroke, but they are moving the same direction, upwards. If anything the engine would probaly lift rather than vibrate.