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  #1  
Old 04-06-2004, 11:26 PM
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A work of pure genius! - Brilliant "Revetec" Engine

This thing is brilliant. Just check the site out, you'll see how it works. It's amazing how much rotational inertia is conserved... just look, you'll see. Revetec is an Australian company, by the way. Genius, mate

EDIT: I just found a few stats on another site... apperently the power stats on this particular unit range from 85hp/250NM to 243hp/300+NM. Keep in mind that this engine weighs 50kg (For comparison, a tiny air-cooled VW flat-4 weighs just over 90kg, and it's a relative featherweight).

This Revetec unit is 50% shorter than a comparable engine. High efficiency, and 12 firing cycles per engine revolution. This design is incredible. I'm completely impressed.



http://www.revetec.com/website/index.html

Advantages:
  • approximately one quarter the size and weight of a conventional engine (for similar applications) combined with improved output substantially increases power/weight and torque/weight ratio.
  • fewer moving and total components. As a result of fewer components, more easily manufactured than conventional engines.
  • identical cylinder head assembly (“top end”) to conventional engines. Most existing head technology can be either adapted or utilised.
  • Flexible design - can be four-stroke, two-stroke, petrol, diesel or gas, natural of forced aspiration.
  • Eliminated irregularly reciprocating components such as connecting rods.
  • Output shaft can be run in either direction if multilobed cams with symmetrical lobes are employed.
  • All rotational forces are counteracted via the counter rotating cam – eliminates the need for a heavy flywheel.
  • Torque and power output can be varied using a fixed capacity and piston stroke.
  • The CCE can be designed to operate at greatly reduced operating speeds while delivering high torque output.
  • Substantial reduction in stroke reduces heat loss through cylinder wall.
  • Extended piston dwell is possible because engine design allows a lower than normal compression ratio to be used reducing power loss from compression cycle.
  • Maximum mechanical advantage can be applied to output shaft at only 10 degrees ATDC utilising high cylinder pressure early in the stroke, compared to around 60 degrees ATDC for conventional engines.
  • Lower emissions can be achieved due to increased control over combustion.
  • Extremely low idle speed due to increase in mechanical efficiency at the top of the stroke.
  • Little or no bore contact/piston side thrust, which reduces wear on cylinder bore.
  • Can have different port timing on compression stroke than power stroke allowing better control two-stroke).
  • Lower centre of gravity.
  • Due to controlled piston acceleration rates the CCE reduces engine vibration.
  • A hollow output shaft can be utilised for specialty applications, such as peristaltic pumps.
Attached Images
File Type: jpg gal22.jpg (79.1 KB, 274 views)
File Type: jpg gal35.jpg (72.9 KB, 171 views)
File Type: jpg gal38.jpg (71.3 KB, 163 views)
File Type: jpg gal391.jpg (63.2 KB, 180 views)

Last edited by Egg Nog; 04-07-2004 at 01:26 AM.
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  #2  
Old 04-07-2004, 01:39 AM
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Very interesting.

Seeing as they are using a Proton Impian as a test vehicle it must be reasonably powerful.

Edit: 85 - 240 hp
If it has good throttle response and can rev nicely, this would be the perfect engine for a seven replica/ caterham/ westfield etc.

Edit again: Stupidity. /learns to read properly
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Last edited by Coventrysucks; 04-07-2004 at 01:51 AM.
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Old 04-07-2004, 04:29 AM
fpv_gtho fpv_gtho is offline
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the Impian's called a Waja here. if you think the names stupid then you'd roll around on the floor over the first advertising campaign Proton had for it.....

nevertheless, the engine looks pretty impressive. im still getting around how it actually works though
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Old 04-07-2004, 01:13 PM
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so when do I get my flat 12 pushing 600 HP on pump gas? That can be daily driven? That weighs as much as a v6?

hmmm? hmmmmmm?
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Old 04-07-2004, 06:33 PM
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Not bad!

Considering the weight of it(50kg) it the power to weight ratio would be real good. and furthur developments, if it is succesfull could mean a new engine of the roads.
Gotta learn more about it, its interesting!!!
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Old 04-09-2004, 10:24 AM
1000bhp1000nm 1000bhp1000nm is offline
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wow...all i can say is...why din they think of this earlier? man, this could revolutionise engine design...it'll change everything...as eggnog said, this is the result of a pure genius...i'm just dumbfounded...i was learning so much about our conventional IC engine lately...and now i might have to throw it all out the window!!! they might win the nobel price with this!!!can't wait for a force induction version of a 4 cylinder version, man, it can as well pump 400hp!!!

and i have to say, they are dumb to experiment the worlds most ingenius engine on the worlds crappiest car...you think the name is stupid? wait till you test drive it...why can't they test it any other cars?
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Old 05-02-2004, 09:06 PM
Sia Sia is offline
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Revetec Engine: Pure Genius

It really is quite amazing what this technology can do. I bought shares in this company over five years ago when it was still in its early stages. I saw the potential of teh engine then, and it is now beginning to bare fruit. It is good to see that they are dealing with Proton, and the Triton plus a swarm of other interesting new business developments.

If anyone is interested in buying some shares off me, send me an email at andrews776@hotmail.com. I am willing to offload the shares at a discounted price becuase I have so many of them.
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Old 05-03-2004, 12:07 AM
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While the move to alternative and hybrid motive power seems to be gaining momentum, it will be difficult for new types of pure internal combustion engines to gain headway. If the design is as lightweight and efficient as it seems, it may be a good idea for the inventor/developer to work with these hybrid concepts.
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Egg Nogg 02-04-2005, 05:07 AM
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Old 05-03-2004, 12:09 AM
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Seems the Aussies are coming up with a few good ideas. I read in the weekend paper about a South Aussie who has a new concept for electric motors which is way more efficient. Ill see if I can find more info.
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Old 05-03-2004, 12:24 AM
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there is an aussie company that is doing something for a trucks engine, its hydrolic somethings change directions so the the oil used for breaking is stored pressurised and when the driver accelerates that oil is re-used to accelerate faster. it saves something like 60 feet of the bearking times 100 kph-0 and 27 or so % of fuel ecconomy. i cant remember if thats correct, but its very impressive.
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Old 05-03-2004, 03:09 AM
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yeh i heard about this but i was on holidays so i didn't listen, that was a while back wasn't it?
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Old 06-25-2004, 05:56 PM
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Quote:
Originally Posted by Sia
It really is quite amazing what this technology can do. I bought shares in this company over five years ago when it was still in its early stages. I saw the potential of teh engine then, and it is now beginning to bare fruit. It is good to see that they are dealing with Proton, and the Triton plus a swarm of other interesting new business developments.

If anyone is interested in buying some shares off me, send me an email at andrews776@hotmail.com. I am willing to offload the shares at a discounted price becuase I have so many of them.
you spamer!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
i tried sending an email to you and it said there is no such address!!!!!!!!!!
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Old 02-25-2006, 10:43 AM
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I've moved all this here to save the annoyance of those interested in F1
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Old 02-25-2006, 01:23 PM
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unlike matra i do not feel a moral obligation to help the stuborn and stupid people of this world ...
so here's my reply ... " You sir are an idiot."
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Old 02-25-2006, 02:11 PM
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I actually like the Revetec concept as it is a new way of getting work out of the reciprocating piston. It certainly has some advantages going for it but well...

It didn't take me long to figure out a way for the revetec engine to work in a inline configuration. The solution I found also meant that they could run an even number of firings per revolution and I would suggest 2 (as in a 2 lobed cam) as this would allow better output speeds and slightly better effciency over a wider range of speeds.

Also it strikes me as odd that nobody has mentioned the most novel part of this system. The fact that the crank assembly translates the linier motion of the piston into rotary motion of the output at peak efficiency faster than a normal crankshaft, making better use of the higher pressure gasses in the chamber. To some of the critics: the 2.9x more torque you keep quoting is actually taken from a comparision between a single firing in a revetec versus a normal engine! the graph for the results is on the website somewhere...


oh and there are engines (mostly rotary) that show pretty large gains in efficiency over the humble piston engine (which has many fundamental flaws) I believe the Quasiturbine a proud canadian invention shows much better innovation and promise.
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Last edited by hightower99; 02-25-2006 at 02:30 PM.
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