The invention provides an engine for obtaining kinetic rotational energy from the explosive decomposition of individual cartridges of an energetic material. The cartridges are individually ignited as needed, producing a bolus of hot, expanding gas, the energy of which is captured by a piston moving in a circular track. Each cartridge ignition produces a single circuit of the piston around the track. A gearing mechanism transfers the angular momentum of the piston to a flywheel. The engine may be coupled to an electrical generator to form a portable, on-demand electric generator system.

The disclosure provides rotary machines that include, in one embodiment, a shaft defining a central axis A, the shaft having a first end and a second end. The shaft can have a first gearbox disposed thereon defining one or more cavities therein. At least one contour is slidably received into an arcuate cavity in an exterior surface of the gearbox. The contour has a convex outer surface that cooperates with an inwardly facing curved surface of a housing to form a working volume. A gearbox mechanism consisting of gears, crankshafts, bearings and connecting rod creates an oscillatory motion 2 times per revolution such that the contour can navigate about the arcuate cavity without contacting the cavity at a high rate of rotating speed. Thus, said working volume can expand and compresses twice per rotatable shaft revolution.

A rotary fluid pressure device, such as a low-speed, high-torque gerotor motor, is provided with a valve drive shaft that is partially inserted into and engaged with a main drive shaft as the main drive shaft engages a rotating output shaft and engages a rotating and orbiting star member of a positive displacement device. The device is also provided with a drive retainer configured to retain the engagement of the main drive shaft and the valve drive shaft.

Rotary vane internal combustion engine comprises of two side-by-side rotors, placed in a cylindrical housing, wherein each rotor has at least two radial vanes rigidly attached to the rotor that form chambers for intake, compression, combustion, and exhaust. Each rotor alternately engages with a shaft by overrunning one-way clutches and is held from turning back, through the damper, mounted on a corresponding flywheel and forming a part of the flywheel assembly, which is rigidly attached on the shaft. The assembled rotors from the outside are rigidly closed by flanges on each of which is mounted at least one blade. The blades are positioned into formed cavities between the rotors and caps of the housing, thereby forming two cooling cavities through which coolant circulates around rotors through openings in the housing and through longitudinal grooves in the shaft. On the vanes are mounted cylindrical and conical seals, which remove the need for lubrication.

A new method and approach to have a compact engine having capability of running on both Fuel and Electricity. Engine will be capable of giving high power and better efficiency based on need. Engines can be operated together as well as independently while giving an option to choose the fuel, power and efficiency.

A roticulating thermodynamic apparatus (100) having a first fluid flow section (111) and a second fluid flow section (115). The first fluid flow section (111) is configured for the passage of fluid between a first port (114a) and second port (114b) via a first chamber (134a). The second fluid flow section (115) is configured for the passage of fluid between a third port (116a) and a fourth port (116b) via a second chamber (134, 234b). The second port (114b) is in fluid communication with the third port (116a) via a first heat exchanger (302a).

A rotary internal combustion engine that has a housing, main rotors with an external cylindrical surface with rigidly fixed gear wheels and blades in the form of gear ledges (protrusions), as well as additional rotors with an external cylindrical surface with rigidly fixed gear wheels and recesses corresponding to the size of the blades on the main rotors. Additionally, the engine includes a unit for preparing and igniting the working mixture and a unit for discharging exhaust gases. Moreover, the circumference values of the main and additional rotors do not match, and are multiples of the length L1 between the nearest points of tangency (physical contact) of the center of the surface of the gear ledge with the housing.

An apparatus comprising: a shaft (18) rotatable about a first rotational axis (30); an axle (20) defining a second rotational axis (32); a first piston member (22) extending from the axle (20) towards a distal end of the shaft (18); a rotor (16) carried on the axle (20); the rotor (16) comprising a first chamber (34a); a housing (12) having a wall defining a cavity (26); a first magnetic guide feature (52); a second magnetic guide feature (50); whereby: the rotor (16) and axle (20) are rotatable with the shaft (18) around the first rotational axis (30); the rotor (16) is pivotable about the axle (20) to permit relative pivoting motion between the rotor (16) and the first piston member (22) as the rotor rotates about the first rotational axis (30); and at least one of the first magnetic guide feature (52) and second magnetic guide feature (50) comprises an electromagnet to pivot the rotor (16) about the axle (20) relative to the first piston member (22).

The present disclosure relates to a rotary engine having a crankshaft with an improved structure, the rotary engine including a housing, a rotor, housing covers, and a crankshaft installed to penetrate through the rotor so as to receive rotational force from the rotor, wherein the crankshaft includes a first member extending in one direction and having an insertion groove recessed in one side surface thereof, a second member extending to penetrate through a center portion of the housing and provided with a protruding portion on one end thereof to be fixedly inserted into the insertion groove, and a coupling member interposed at a position where the insertion groove and the protruding portion overlap each other such that the first member and the second member are closely coupled to each other.

The disclosure provides rotary machines that include, in one embodiment, a shaft defining a central axis A, the shaft having a first end and a second end. The shaft can have a first gearbox disposed thereon defining one or more cavities therein. At least one contour is slidably received into an arcuate cavity in an exterior surface of the gearbox. The contour has a convex outer surface that cooperates with an inwardly facing curved surface of a housing to form a working volume. A gearbox mechanism consisting of gears, crankshafts, bearings and connecting rod creates an oscillatory motion 2 times per revolution such that the contour can navigate about the arcuate cavity without contacting the cavity at a high rate of rotating speed. Thus, said working volume can expand and compresses twice per rotatable shaft revolution.