A rotary engine is provided for providing torque. The engine includes a housing, a stator, a crank shaft, a rotor and a pair of vanes. The housing has an inner wall with an elliptical profile with major and minor axes. The stator has an outer wall and a double ellipsoid profile corresponding to the major and minor axes. The crank shaft is disposed at a junction of the major and minor axes, rotating about a spin axis orthogonal to the profiles. The rotor has an annular circular profile disposed between the inner and outer walls. The rotor turns on the crank shaft. The vanes radially slide within the rotor as the crank shaft rotates and as the vanes turn within the inner and outer walls.

An engine, such as a circulating piston engine, includes a housing that defines an annular bore, a piston assembly, and a valve. The piston assembly is disposed within the annular bore and is configured to be coupled to a drive mechanism. The valve is configured to be intermittently disposed within the annular bore to define a combustion chamber relative to the piston assembly.

A rotary internal combustion engine includes an arcuate compression chamber, an arcuate expansion chamber, an output shaft, and a piston coupled to the output shaft for movement through the arcuate compression chamber and the arcuate expansion chamber. The piston has a leading end, a trailing end, an inlet valve that is located at the leading end of the piston for receiving a compressible fluid from the compression chamber and an outlet valve that is located at the trailing end of the piston for expelling a combustion gas into the arcuate expansion chamber.

It is a positive displacement, non-pulsating hydraulic pump with a double action piston that is non-reciprocating and generates fixed volume with high pressure. The piston moves in one direction through the inside of a toroid chamber in which two movable walls isolate the loading and unloading cavities. When a movable wall opens to give way to the piston the other movable wall splits two cavities within this chamber. When hydraulic pressure is supplied it works as a hydraulic motor, which allows the use of high efficiency and performance of the piston in the production of electric energy. It also substantially reduces size and considerably simplifies the mounting of the piston's operating mechanism. All of this improves performance of the hydrostatic transmission.

Disclosed is a single-stroke internal combustion engine including a cylinder seat and a power wheel. The cylinder seat has a circular cylinder, at least one first explosion chamber disposed on a cylinder wall, and an ignition system, a fuel supply system, a compression means, an exhaust means and an intake means installed at the external periphery of the cylinder seat corresponsive to each respective first explosion chamber and communicating with the cylinder. Each ignition system is corresponsive to the first explosion chamber; the power wheel is slidably coupled to the circular cylinder of the cylinder seat, and has at least one compression chamber and a second explosion chamber disposed adjacent to each other and rotably corresponsive to the first explosion chamber, fuel supply system, compression means, exhaust means and intake means of the cylinder seat. After the power wheel is turned on, air enters into the intake means and fuel gas is supplied from the fuel supply means, and both air and fuel gas are compressed in the compression chamber by the compression means and collected into the first explosion chamber and the second explosion chamber and ignited by the ignition system for explosion, and the explosion produced by the compressed fuel gas has a high explosive yield to drive the power wheel to rotate by the second explosion chamber, so that the power wheel is rotated constantly in a single direction to provide high-efficiency kinetic energy.

A rotary engine includes a shroud surrounding a rotor. The rotor carries at least one combustion chamber spaced from an axis of rotation of the rotor. A pressure activated valve, such as a relief valve, is located between the combustion chamber and obliquely arranged exhaust nozzles. A drive shaft is engaged to the rotor for mutual rotation. An ECU controls the combustion cycle of the engine based on a signal from a pressure sensor in the combustion chamber. A fuel control valve delivers fuel into the combustion chamber. An air control valve delivers pressurized air into the combustion chamber. The electronic control responds to the pressure signal from the pressure sensor to open the fuel control valve, to fire a spark plug and cause combustion of the fuel within the combustion chamber, and to thereafter open the air control valve to purge the combustion chamber of exhaust gasses. A method of operating the controls is also disclosed.

An engine includes a housing defining an annular bore and a piston assembly disposed within the annular bore. The engine includes at least one valve configured to oscillate between a first position within the annular bore to allow the piston assembly to travel from a first location proximate to the at least one valve to a second location distal to the at least one valve and a second position to define a combustion chamber relative to the piston assembly at the second location. The engine includes an exhaust gas port disposed in fluid communication with the combustion chamber and a fuel distribution assembly configured to mix fuel from a fuel source and air from an air source into a fuel and air mixture at a location external to the combustion chamber and to deliver the fuel and air mixture to the combustion chamber.

A motor is configured to apply a rotational force to a wheel that includes a rim rotatably mounted to an axle about a first axis. The motor has a rotor coupled to the rim. The rotor has an interior cavity and a plurality of radial slots formed therein. A cylindrical stator is disposed within the cavity and has a second axis offset from the first axis. The stator is fixed in rotation relative to the axle. The motor further includes a plurality of vanes, each vane being slidably disposed within one of the plurality of radial slots. A compressed gas source is in fluid communication with the cavity and selectively provides compressed gas to the cavity to rotate the rotor.

Disclosed are Variable Displacement Power Controllers and applications generally in the field of fluid powered systems that provide for increased efficiency and effectiveness over known fluid systems, where fluid power generally refers to hydraulic or pneumatic power systems.

An internal combustion rotary engine comprises: at least one combustion chamber; a flywheel; at least one piston provided in said flywheel; two or more barrier elements; a circumferential volume between the outer surface of said flywheel, the housing of said flywheel, and two or more barrier elements; wherein some parts of the circumferential volume are also delimited by one or more pistons, and wherein the barrier elements are adapted to be positioned within said circumferential volume thereby to essentially block the flow of air therein, and to be positioned such as to at least partially unblock the flow of air therein, thereby allowing said air flow to take place, and to be positioned such as to be totally open to promote the piston to move between circumferential area and wherein the timing of movement of the barrier elements is dependent from the rotation of said flywheel and/or the location of said piston(s); and wherein the barrier element that is in contact with a portion of pressurized air is adapted to move without the need for sealing while the piston is blocking the pressurized air that is needed for combustion inside the combustion chamber, wherein the piston partitions the pressurized air into two portions, one of which is locked in the combustion chamber while the other is located between the front of the piston and the barrier element.