Poppet Valve Actuation: Desmodromic VVA Rod version VVA Roller version VVA Rod-Roller VVA CVVD PatVVD PatAir hydr. VVA More VVA's Rotary Valve PatRoVa Connecting Rod Valve: Tilting Valve Asymmetric Timing 2-stroke ECO Opposed Piston OPRE Opposed Piston PatOP Portable Flyer Safer Flying Variable Pitch Propeller GoFly BOEING Contest PatMar(ine) engine PatPortLess engine PatATE Asymm_Porting PatVRA: Vibrations Reduction Apparatus Variable Compression Constant Velocity Joint CVT transmission: PatBox CVT PatCVT Wider CVT range 2-Stroke Miller Pulling Piston Engine Other Topics: Teaching Stereoscopy PatPOC Opp Piston Blade Valve Rotary Engine Rack Gear VCR Crankshaft VCR HCCI Combustion PatBalDan CVJ PatEf CVT Rolling Rollers PatRon Rotary PatWankel Rotary Twisted Tooth Belt Rolling Bearings Crankless engine Key Advantages Expo Contact

Some technical solutions for engines, transmissions, personal flying devices etc.

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DVVA : a mechanical Desmodromic Variable Valve Actuation system; more desmodromic than Ducati Desmo (which is non-variable) and more variable than BMW's valvetronic.

PatVVD : a mechanical Continuously Variable Valve Duration system (CVVD).

VVA Roller : mechanical; throttle-less; valve lift continuously variable from 0mm (idling at 330rpm) to 12mm; it pulls strongly from 1,000rpm all the way to 9,000rpm (as in the video).

PatAir : it provides all the modes of the MultiAir / UniAir / TwinAir of FIAT / INA plus an infinity of additional "Outgoing Air Control" modes for improved fuel efficiency.

OPRE : with its unconventional architecture (pulling connecting rod) it shifts the combustion to the "slow dead center" for improved thermal efficiecny.

PatOP : one only crankshaft and a pair of opposed pistons driven by pulling connecting rods.

Portable Flyer : rid of reaction torque; zero gyroscopic rigidity; what is left is only a force that can instantly and effortlessly be vectored towards the desirable direction to control the flight.

PatMar : it can offer to the giant Sulzer, MAN and Wartsila 2-strokes (i.e. to the most efficient stand-alone machines) 4-stroke lubrication, lube consumption and scuffing resistance.

Rotary Valve : a pair of oppositely acting fronts, firmly secured to each other, covers and uncovers a pair of oppositely arranged ports of the combustion chamber.

Asymmetric Timing 2-Stroke : with properly shaped piston and connecting rod, the transfer and the intake of the simplest two-stroke get as asymmetric as desirable.

Continuously Variable Transmission : an automatic, yet controllable, V-belt CVT.

PatHead VCR : a simple, cheap, compact, lightweight Variable Compression Ratio system.

Constant Velocity Joint : a CVJ based on roller bearings; rid of loaded sliding surfaces, it offers a wide range of angles between the shafts at a true 1:1 ratio.