TROPE : Toroidal Opposed Piston Engine
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The pistons are fixed to the central rotating swinging beams and are moving free in the cylinder liners. No friction or wear due to pistonslap or sidethrust , only compression piston rings. All other mechanical components are simple to lubricate rotating and pivoting joints and are fully in vibration free balance.
The drawing is 4 times 2 x 500 cc = 4000cc engine with 70mm pistons., giving theoretical power as a 8000cc four-stroke. The weight according inventor-cad-program is 300 kg.
If the engine can provide , as in a motorcycle fourstroke, let's say 100 kW per 1000cc, then we have a 800 kW for a 300 kg engine !! A diesel could have a power to weight ratio of 2kW for 1kg.
in the media :
old toroidal engines :
other presently known toroidal engines ( actually cat-and-mouse or stop-and -go pistonengines) :
Russia : http://www.auto-car-shop.com/19862/billionaire-mikhail-prokhorov-has-the-hybrid-e-mobile-russia-with-video/
USA : http://www.appliedthermalsciences.com/
ir. Franky Devaere