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post #1 of 10 Old Aug 6th, 2009, 7:54 pm Thread Starter
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Thumbs up Peraves Superballmotor Engine

Related thread: http://www.bmwlt.com/forums/showthread.php?t=34687
Relatated article: MCN, Sept. 2009, pp.38-9

Your next motorcycle may have real balls:
http://kugelmotor.peraves.ch/index_en.htm

Check out the animation on the web page.

Claiming only 3 moving parts, built in supercharger, double the power at half the RPM. Maybe the coolest engine invention since the Wankel.

Dave Moore
Boerne, Texas
Chain-driven '08 Blazing Orange Triumph Tiger 1050i
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post #2 of 10 Old Aug 7th, 2009, 11:05 am
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Re: Peraves Superballmotor Engine

My initial thoughts:

There are only '3' moving parts, but the inertia of the 'pistons' must be tremendous! What issues that raises with throttle response, seal wear, the ceramic balls, etc. remain to be seen. ( And aren't the balls moving and taking all the stress of guiding the massive cylinders through compression and exhaust cycles?)

It would seem to me that all of the motor's torque is being fed into the one central 'bearing' where the two shafts intersect. Could be an Achille's heel.

What effect will the moment of inertia of those really large rotating hemispheres have on the handling of a motorcycle? Depending on the attitude of the engine in the chassis, there might be some new forces for the frame and/or suspension to deal with.

Whatcha think a seal replacement job on one of these is gonna cost?!!

Looks like a wankel process that is twisted into another dimension. The 'rotors' are now HUGE, compression is accomplished by moving the cylinder 'walls' rather than the eccentric motion of the rotor in a static chamber, and any variable timing for the intake and/or exhaust to maximize efficiency would add a lot of complexity to the system.

I am certainly no engineer, but it looks like it might have specific applications: perhaps an optimumly tuned constant speed motor teamed with CVT transmission. I just think it is a long way from going down to your local dealer and buying one.

Bless 'em for thinking outside the box! I just wish someone would pursue hydrogen based fuel cells and the supporting infrastructure with as much passion. There is a heck of lot more hydrogen in the universe than petroleum ( or anything else for that matter ); plus you can drink the emissions!

Brett

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post #3 of 10 Old Aug 7th, 2009, 12:55 pm
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Re: Peraves Superballmotor Engine

Interesting concept...

Any emissions info? How many MPG in it's current config?

Question: Why couldn't this be used as a way to push power to a battery? You don't need a huge engine to create energy to store. Make this ball motor small enuf to supplement a battery driven vehicle. It runs at a constant rate pushing power to the cells. Miles per gallon? If it's super efficient, very small, and runs at a rate where load does not require massive amounts of torque, it could be used as a supplement to a vehicle that runs electric motors only.

From what I understand, there are electric motors which out torque gasoline driven ones and they rev higher and quicker than a normally aspirated fueled motor.

What with the ability to recoup energy thru braking/coasting, solar supplementation and who knows what other method of energy creation, this type of thing could help create an electric car with unlimited miles in the battery pack that could conceivably get 100 mpg's (or more).

Or am I all wet???

Uncle Mark

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post #4 of 10 Old Aug 7th, 2009, 6:46 pm
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Re: Peraves Superballmotor Engine

Pretty damm ingenious. The ceramic balll controlled movement is a great application of sperical control. Industrial ball valves use a much more basic methodology to do the same thing.

The key is using them in conjunction with the discs that control the intake.

I used to have a 2 stroke Kawasaki "rotary valve" - used the same principle for intake timing control - It was very accurate and effective. The supercharging is icing on the cake.

-Brian

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post #5 of 10 Old Aug 7th, 2009, 8:31 pm
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Re: Peraves Superballmotor Engine

So where is all this hydrogen coming from? Last time I checked, It takes more energy to produce the hydrogen then you get out of it. I could be wrong of course.
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post #6 of 10 Old Aug 7th, 2009, 8:52 pm
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Re: Peraves Superballmotor Engine

Quote:
=Shogun54]------------------------------------------------
What effect will the moment of inertia of those really large rotating hemispheres have on the handling of a motorcycle? Depending on the attitude of the engine in the chassis, there might be some new forces for the frame and/or suspension to deal with.
If mounted longitudinaly, as in the LT, the rotating mass would not be a factor. Transversely, as a V-twin, the rotating mass would likely be no more than any large V-twin Crankshaft.
Quote:

Whatcha think a seal replacement job on one of these is gonna cost?!!
That was my first thought, and wondering if they can make the seals last. That was the big problem with the Wankel (Mazda), but they finally pretty much licked that one.[quote]

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post #7 of 10 Old Aug 7th, 2009, 10:15 pm
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Re: Peraves Superballmotor Engine

what a great idea!
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post #8 of 10 Old Aug 7th, 2009, 11:18 pm
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Re: Peraves Superballmotor Engine

so if they made it a "4 Baller", would it have that kewl sound, or would it be a weird kinda sound?

and I guess new jargon at the shop would be- I cant help it...
he lost his balls.....

or hand me that bal breaker wrench... new hjack!

I think this is a novel design tho....

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post #9 of 10 Old Aug 8th, 2009, 12:09 am
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Re: Peraves Superballmotor Engine

So raises the question of the RPM limit ?
Once exceeded does it mean you just busted your balz

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post #10 of 10 Old Aug 9th, 2009, 10:34 pm
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Re: Peraves Superballmotor Engine

Quote:
Originally Posted by Bob1200rtc1
So where is all this hydrogen coming from? Last time I checked, It takes more energy to produce the hydrogen then you get out of it. I could be wrong of course.
Ah, Bob ... you're gonna love this:

http://www.rsc.org/chemistryworld/ne...y/02070902.asp

If we're looking for something plentiful to use as fuel ( or an energy storage medium ), the universe is ~75% hydrogen, ~25% helium; everything else is just trace elements. The trick is, as you say, how do we get it cheap enough to be viable? I'm afraid the days of cheap energy are gone forever; it's time to look for something commonly available that doesn't poison the planet when we use it.

Google 'hydrogen fuel'. Lot's of interesting stuff out there. And as an aside, the motor under discussion, as well as the regular old internal combustion engine can run on hydrogen. What company has developed cars that can run on both hydrogen and petroleum?

Brett

Get busy livin' or get busy dyin'!

2003 BMW K1200LTC "El Gato Grande"
1993 Suzuki GSXR1100W
1978 Suzuki GS1000C 'Project'

Last edited by Shogun54; Aug 9th, 2009 at 10:46 pm. Reason: Grammar
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