Zulu

http://quasiturbine.promci.qc.ca/QTIndex.html

jeremy

iTrader: (1)

very interesting design. i found it four years ago when looking at alternative combustion engines. lloks like he's come a long way since then. i could see this take off in smaller applications, like the chainsaw he showed, decently soon.

Manntis

I wonder how the power is actually transferred from the four pieces to a crankshaft - there'd be some massive lateral forces on those roller bearings. The jigsaw fitments at the corners would be prone to cracking over time, too, as the piece pushed under power cycle would be rammed into the underside of the piece in exhaust cycle...

inittab

Looks interesting..... if they pop one of these engines in a race car and run it full out in say the Le Mans 24hr endurance race.... I might be convinced.

Project84

I second that motion.

Directfreak

iTrader: (2)

Agreed.
But the movement...



Is mesmerizing.






[subliminal]BOW DOWN TO ME..[/subliminal]

abeomid

The design doesn't look promising. It's too complicated and too many moving parts. The good thing about the original ROtary engine is the 3 moving parts, not 20.

Sammymatik

Ok i have to say this is a cool idea,
so where can I get one? Maybe some a DIY kit?

reminds me of this engine, http://www.ox2engine.com/revealed.htm

here are the animation of the engine:
http://www.ox2engine.com/animation.htm

Granted it's got pistons, but it also rotates...

This square rotor thing is really a kewl idea, if it works.

Manntis

I think a new kind of combustion engine @ this point would be a very, very tough sell. Even 4 strokes are getting better and better @ what they do, and most are looking into cleaner fuel sources i.e. fuel cells, electric vehicles, etc.

maxpesce

The OX2 design is not new - My Father Patented a SWASHPLATE hydraulic pump based on the same general design in the early 1950s - it was the basis for all of the constant pressure (up to 6000+psi) variable displacement pumps maufactured by ABEX (now PARKER AEROSPACE) for Aircraft & Marine hydraulic control systems - In his pump the cam is replaced by a plate who's angle can be changed to vary displacement while moving up and down relative to the piston stroke to maintain constant pressure over a wide flow range.

Sammymatik

No one would argue that the wankle rotoray engine is a better, more efficeint design than the reciprocating pistion engin but , there has been so much time and money spent on conventional piston engines for any manufacturer to do away with them.

As for alternative fuels... I believe that is totaly economics. So long as we have oil, which is why we care so much about Irak, we have no real need for alternative fuel. Gasoline is cheap, we have huge cars (SUVs), and massive engines. Americans could care less about efficency at this poing, and thanks to the research into the piston engine, we have engines that burn so clean, that pollution is not an issure....

--Long live the rotary engine, down with the piston

JumpyRoo

Oh boy. Look at all those moving parts. Looks like trouble :P

peejay

Well, the ORIGINAL had 2 moving parts and no reciprocating motion whatsoever. Unfortuately sealing was a big problem and you had to disassemble the engine to change the spark plugs...

Felix Wankel was against the Wankel rotary (only Mazda engines can really be called "rotary" minus "Wankel") that we know and love today. He HATED it. It doesn't have pure rotary motion, and it was pretty much designed behind his back. When he sw the design, he made a mark along the lines of "They have turned my racehorse into a cart horse!"

Jeff20B

iTrader: (13)

So what if somebody was to go ahead and build Wankel's original engine with today's sealing and sparkplug technology?

Wattz

So what did they change on it? Why did they change it?

Zulu

It'd be called the Renesis... :p

Wattz

hahaha

Rx-Racehorse...

peejay

Nowhere near.

On the original engine, (the DKM) the rotor was part of the shaft. "How did it wobble around?" you ask. Answer - it didn't! The shaft was mounted off-center in a drum and the "rotor housing" (also called "outer rotor") spun in the drum and was geared to the shaft/rotor in the familiar 2:3 ratio.

Tons of sliding surfaces to seal, and the sparkplugs are on the INSIDE of the engine. But, everything moved in purely rotational motion, with no orbiting motion like current Wankels (KKM) have.

http://www.nsumotor.onlinehome.de/dkm.htm The "racing horse"

Just for good measure...

http://www.nsumotor.onlinehome.de/kkm.htm The "cart horse" and the basis for all production Wankels including Mazda's.

Defprun

ROTARY ENGINE IS STILL GOD!

WackyRotary

That concept engine looks like it would have a lot of rotating mass from with-in, and with a lot of weight near the edges acting like a flywheel. An engine at a scale comprable to a 12a engines output would probably have slow reving in comparison, ofcourse this is just speculation.