The Duke Engines of New Zealand
11-04-2014, 01:23 PM
#1
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The Duke Engines of New Zealand
Possible applications in boats?
http://www.youtube.com/watch?v=c19kn3drdFU Photo Credit: http://www.dukeengines.com
http://www.youtube.com/watch?v=c19kn3drdFU Photo Credit: http://www.dukeengines.com
11-07-2014, 08:25 AM
#2
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Very interesting concept. It would open up the engine bay area quite a bit, however Im not thinking there going to make north of 500 HP.
Sounds like Mr. Wankel had a cousin ..... But we all know how good those were...
Sounds like Mr. Wankel had a cousin ..... But we all know how good those were...
11-08-2014, 09:25 AM
#3
there a bit vague but it looks like a pistol revolving barrel with the pistons turning against a stationary cylinder head with the valves and combustion chamber thats got to be quite hard to seal rotarys can do it but it took many years to get it right i remember rebuilding a 12a i think i spent a week getting all the little sealing parts to stay in place on the rotor
11-08-2014, 09:45 AM
#4
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.
I'm also concerned that when the fuel/air mixture charge is released into a moving cylinder, will the fuel/air mixture congregate to one side of the cylinder because the cylinders are in motion but NOT the fuel/air charge?
on second thought, this might actually help increase the burn efficiency of the fuel/air mixture, much like how the Dodge Hemi's work.
The piston is hemispherical thus causing more turbulence inside the cylinder to maximize the fuel/air volume to enter the cylinder. http://en.wikipedia.org/wiki/Hemi_engine
I've read that the Duke Engine does not show detonation at any speed, this is proly how they achieved this....using turbulence....wow!
.
I'm also concerned that when the fuel/air mixture charge is released into a moving cylinder, will the fuel/air mixture congregate to one side of the cylinder because the cylinders are in motion but NOT the fuel/air charge?
on second thought, this might actually help increase the burn efficiency of the fuel/air mixture, much like how the Dodge Hemi's work.
The piston is hemispherical thus causing more turbulence inside the cylinder to maximize the fuel/air volume to enter the cylinder. http://en.wikipedia.org/wiki/Hemi_engine
I've read that the Duke Engine does not show detonation at any speed, this is proly how they achieved this....using turbulence....wow!
.
Last edited by noli; 11-08-2014 at 10:02 AM.
11-08-2014, 09:32 PM
#7
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I contacted this manufacturer about two years ago and they stated the primary application was centered around aircraft and didn't offer much hope for marine use.
I liked the smooth operation and compact design.
I liked the smooth operation and compact design.
11-09-2014, 12:41 AM
#8
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.
The vertical position is ideal for outboards.
I hope they didn't scrap it, but marine use was in their minds, or maybe it is today?
Photo Credit: http://www.dukeengines.com/application/multi-aps/
The vertical position is ideal for outboards.
I hope they didn't scrap it, but marine use was in their minds, or maybe it is today?
Photo Credit: http://www.dukeengines.com/application/multi-aps/
