Continuous Combustion Rotary Engine : High torque, low RPM, zero vibration, potentially oil free, fast acceleration, less noisy, less polluant, and high power density in volume and weight. Reversible Engine for hydraulic, pneumatic, steam, gasoline, diesel, natural gas, ... photo-detonation mode and hydrogen compatible Compressor or pump without any check valve or obstruction.

The Quasiturbine is at the crossroad of the 3 modern engines : Inspired by the turbine, it perfects the piston, and improves on the Wankel. The Quasiturbine theory optimized 14 engine parameters at once. The Quasiturbine is a continuous flow engine at intake and exhaust. An engine's piston completes 4 strokes in two rotations, the Quasiturbine completes 32 ! High torque, low RPM, zero vibration, potentially oil free, fast acceleration, 20 times less noise, less pollution, and high power density (a factor of 4) in volume and weight Engine for hydraulic, pneumatic, steam (solar), gasoline, diesel, Jet fuel, natural gas, ... photo-detonation mode and hydrogen compatible. Otto, Diesel, Stirling and heat pump, Brayton (Joule) cycles and implosive Brown gas... Compressor, pump or turbo-pump without any check valve or obstruction

While most rotary engines use the principle of volume variation between a curve and a moving cord, this new engine concept makes use of a "seven degrees of freedom X, Y, q, ø1, ø2, ø3, ø4" rotor, trapped inside an internal housing contour, and does not require a central shaft or support. This concept is the result of research for an hybrid turbine-piston engine with a fixed center of gravity during rotation (zero vibration). The invention is an assembly of four carriages supporting the pivots of a four-element, variable-shape rotor. This rotor rolls on the inner surface of a profiled stator shaped like a skating rink (just like a roller bearing). During the rotation, the rotor components align alternatively in a lozenge and a square configuration. This device can act as a pump, a compressor, a flow meter, or as an engine (including pressurized fluid mechanical energy converter). It is self-synchronized and uses no valves (only fixed ports in the stator or alternatively, ports on the lateral side covers). Central support of the rotor is not required for most applications. Four cycles are completed in every rotation. The maximum geometrical compression ratio is a function of the maximum diagonal ratio selected at design. As for turbine engines, ignition is only required initially, since combustion is kept continuous between successive cycles by way of an ignition transfer slot or cavity. The continuous combustion produces an enhanced dynamic compression ratio. The device incorporates few parts. It has an excellent torque continuity even at low rpm (Due to its high torque pulsation rate, this device requires less flywheel effect and gearbox ratio for most applications).

The Quasiturbine is universal in relation to energy sources : Liquid, gaseous fuel, hydrogen, steam, pneumatic, hydraulic... The asymmetry of the strokes, the precocity of the mixture intake and gas expansion allow for a better mechanical energy conversion. It is suitable for uses such as aeronautics, where high reliability is required. Having no oil pan, it can be operated in completely submerged or hostile environments.

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