Abstract: A rotary roller motor is disclosed herein. The rotary roller motor is a four-stroke internal combustion engine, wherein the rotor “rolls” around the inside of the engine block. The rotor is a two-part rotor having an inner part with a shaft and an offset circular lobe, and an outer rotor fit around the lobe. Two barriers are provided around the rotor chamber, a compression/power barrier and an exhaust/intake barrier. The combustion chamber has a non-reversing compression barrier and a compression hold barrier regulating the combustion of gas.

Abstract: A rotary engine which provides a supplemental phase of compression between a first phase of compression and a second phase of compression.

Abstract: A positive displacement rotary system may include a main rotor and a slotted rotor. The main rotor can include an interior cavity and a fixed vane (or blade) that is attached to the peripheral and side walls of that cavity. The slotted rotor is positioned within the main rotor interior and includes a slot for the main rotor blade. The main and slotted rotors rotate about parallel axes that are offset from one another. As the rotors turn, separate chambers are formed between the blade and an inter-rotor seal, with the inter-rotor seal located at or near a rolling contact between the outer surface of the slotted rotor and an inner perimeter wall of the main rotor cavity. The separate chambers contract and expand as the rotors rotate.

Abstract: A rotary engine includes a compressor assembly and two power assemblies that receive compressed air from the compressor assembly. Each assembly includes at least two intermeshing rotors. The rotors of the compressor assembly compress air, either alone or in an air/fuel mixture, in a compression chamber located in that assembly. The compressed air is transferred to the expansion chambers of the power assemblies, where fuel is ignited to initiate a power stroke. A line bisecting the axes of the rotors of the compressor assembly is inclined at an acute angle relative to a line bisecting the axes of the rotors of the power assemblies. The power assemblies operate 180° out of phase with respect to one another to minimize power fluctuations in the engine.

Abstract: A central-axis rotary piston internal combustion engine has a rotor housing closed off by housing covers, has an outer rotor which rotates in the rotor housing with uniform speed, and has an inner rotor which rotates in the interior of the outer rotor with non-uniform speed. The outer rotor has three inwardly pointing pistons rigidly connected to one another and arranged at uniform angular intervals from one another. The inner rotor has a corresponding number of radially outwardly pointing mating pistons which are rigidly connected to one another and which engage between in each case two pistons of the outer rotor so as to delimit in each case two working chambers. Each working chamber is assigned a combustion chamber and each combustion chamber communicates via a control window with stationary inlet and outlet openings.

Abstract: The subject of the invention is a variable-volume rotary device with a housing (1) comprising an inner spherical cavity, inlet and exhaust ports and a bypass flow path. Within the housing (1) a rotary displacement member with spherical outer configurations capable of revolving around the center point of the spherical inner surface of the housing is mounted. Said rotary displacement member is equipped with a centrally disposed, disc-shaped partition (6) that forms a mutually isolated division in the spherical inner cavity of the housing (1) and has two pivot vanes (7, 8), splitting the housing cavity further into four isolated quadrants, the volume of which vary during gyration. Vanes (7, 8) are similar in shape to orange segments. Vanes (7, 8) are connected to opposing sides of and along the diameters of the central disc (6), and extend in mutually perpendicular planes, allowing for rotary movement.

Abstract: The invention relates to heat engines and more specifically to positive displacement internal combustion engines, and is particularly concerned with oscillating engines i.e. engines, in which piston executes oscillating motion. The invention provides the optimal, “canonical” form for the two stroke oscillating engine of unique strenght and compactness.

Abstract: The rotary reciprocating piston engine as a rotor rotatably journaled in a housing and a plurality of pistons movable in radial direction in the rotor between outer and inner dead points. Each piston has a piston rod mounted on a transverse shaft carrying at each end a sliding element which is displaceable in radial grooves formed in the rotor on both sides of the piston. The sliding elements are each provided on the outer side thereof facing away from the piston with a pin received in a housing-fixed star-shaped endless guide groove. The guide groove extends about the axis of rotation of the rotor and controls the movement of the pistons in radial direction between the inner and outer deadpoints.

Abstract: A positive displacement rotary system may include a main rotor and a slotted rotor. The main rotor can include an interior cavity and a fixed vane (or blade) that is attached to the peripheral and side walls of that cavity. The slotted rotor is positioned within the main rotor interior and includes a slot for the main rotor blade. The main and slotted rotors rotate about parallel axes that are offset from one another. As the rotors turn, separate chambers are formed between the blade and an inter-rotor seal, with the inter-rotor seal located at or near a rolling contact between the outer surface of the slotted rotor and an inner perimeter wall of the main rotor cavity. The separate chambers contract and expand as the rotors rotate.

Abstract: The invention provides the proper form for the rotary positive displacement internal combustion engine. The construction of the engines according to the invention is based on a specific form of four bar mechanism and features unique simplicity (only three moving parts, no valves or camshafts, no gears to transfer piston movement to rotary movement), compactness and strength that make the engines according to the invention similar in these and some other aspects (e.g. power density) to gas turbines.

Abstract: A rotary engine includes a compressor assembly and two power assemblies that receive compressed air from the compressor assembly. Each assembly includes at least two intermeshing rotors. The rotors of the compressor assembly compress air, either alone or in an air/fuel mixture, in a compression chamber located in that assembly. The compressed air is transferred to the expansion chambers of the power assemblies, where fuel is ignited to initiate a power stroke. A line bisecting the axes of the rotors of the compressor assembly is inclined at an acute angle relative to a line bisecting the axes of the rotors of the power assemblies. The power assemblies operate 180° out of phase with respect to one another to minimize power fluctuations in the engine.

Abstract: A rotary engine which provides a supplemental phase of compression between a first phase of compression and a second phase of compression.

Abstract: A highly efficient, low weight-to-power ratio and adjustable high compression, gasoline or diesel internal combustion engine consisting of a multitude of cylindrical casings parallel to each other or aligned sequentially on one axle. Each casing having one radially extending vane affixed to a shaft rotatably mounted within the casing upon two end plates and one longitudinally extending wall affixed on the inside of the casing. The casing and/or the end plates equipped with plurality of ports and conduits which enable communication between interior chambers of the cylinders, allowing for intake of combustible air-fuel mixture and exhaust thereafter. Ignition means delivering a spark at the end of each working cycle. An extendable and adjustable connecting rod assembly converting the oscillating bi-directional rotary motion of the power output shaft into a continuous unidirectional motion of the main shaft. A self lubricating mechanism incorporated into the engine.

Abstract: Presented is a very low speed, high torque, horizontally opposed, rotary, valveless, Otto cycle piston engine producing four power strokes per revolution, the engine consisting of a fixed engine case assembly having upper and lower plates, the engine rotor assembly having upper and lower plates, sandwiching a single, closed ended cylinder assembly, the cylinder containing intake and exhaust-intake ports, independently reciprocating power and head pistons, each piston being reciprocally controlled by its vertically projecting piston bearing sets contacting respective sets of upper and lower, inner and outer peripheral cam plates, the engine being thus rotated, the cylinder being lubricated by a sealed, recirculating air-oil mist system, the engine rotor assembly having a lower, vertically projecting gear box housing containing a gas porting cap, a vertical drive shaft, two counter rotating output shafts, intake and exhaust pipes, and an exhaust gas filter canister.

Abstract: The problems of prior compressor structures relying upon conventional check valves are obviated by using, instead, flow control passages which operate to control flow while avoiding mechanical moving elements which may become problematical.

Abstract: The present invention relates to a rotary internal combustion engine that extracts power from expansion gases supplied to a rotary power-extraction assembly, and related methods. The disclosed engines include a compressor assembly, a combustion assembly, and a rotary power-extraction assembly. The compressor assembly supplies a compressed charge to the combustion assembly. The combustion assembly initiates combustion and discharges expansion gases to the rotary power-extraction assembly. A rotary power-extraction assembly can be configured to include an annular chamber where expansion gases drive a power rotor.

Abstract: A rotary engine is disclosed. The rotary engine of the present invention includes an engine body (100), which has therein a compression chamber (101), an output chamber (105) and a combustion chamber (109, 115), which is formed between the compression chamber and the output chamber. The rotary engine further includes a compression rotor (400) which is eccentrically provided in the compression chamber, an ignition device (125, 126) which is provided in the combustion chamber of the engine body, and an output rotor (500), which is eccentrically provided in the output chamber. The rotary engine further includes valves (600) which are provided in the respective bores of the combustion chamber, a synchronizing means for rotating the compression rotor in conjunction with rotation of the output rotor, and an axial sealing means for sealing the compression chamber, the combustion chamber and the output chamber.

Abstract: The invention relates to an internal combustion engine comprising a rotor which is mounted in such a way that it can be rotated about a central axis in a housing, and in which cylinders are arranged in the same plane, pistons being introduced into said cylinders, the inner end of said pistons being connected to an eccentrically arranged axis in an articulated manner. The cylinders are rotatably mounted in the outer edge of the rotor respectively with the outer ends thereof, and end in the outer envelope of the rotor. At least one combustion chamber is arranged in the housing, the inner end of the chamber ending in the inner housing wall that surrounds the outer envelope of the rotor. The combustion chamber is arranged at an angle of between 45 and 90 degrees, especially between 70 and 85 degrees, to the radius of the rotor.

Abstract: A modular revolving cylinder engine including at least two interdependent flywheels driven in rotation by a driving device (1) that rotates them in synchronization and in opposite directions. Each flywheel includes a plurality of equally spaced hollow pushrods that are reciprocally movable along stroke lines that are parallel and offset with respect to the central axis of rotation thereof and through which combustion gases from associated combustion chambers pass outwardly of the flywheels. End portions of the opposing pushrods engage during each rotation of the opposing flywheels during which time the oppositely directed combustion gases passing through the pushrods impinge on the outer end portion of the opposite pushrod to thereby provide thrust to drive the opposing flywheel in rotation in opposite directions.

Abstract: An engine including a housing formed with a pair of side-by-side intersecting substantially cylindrical cavities, and a pair of counter-rotating power rotors rotatably mounted within the cavities. The pair of power rotors include intermeshing lobes that each define open ended combustion chambers.

Abstract: An improved hydraulic motor system, suitable for driving an automotive cooling fan or the like. The system is driven by grade gerotor set and an idle gerotor set which are stacked between a center plate and against a rear wall of a cylindrical cavity in a front face of a manifold. A fluid-tight chamber is established by securing an end frame can around the stacked gerotor sets and against the perimeter of the manifold cavity. Tightness of the seal is controlled by positioning a resilient cover plate against the end frame can from a position opposite the manifold, and adjustably clamping the resilient cover against the manifold until the resilient cover has undergone a predetermined amount of elastic deformation.

Abstract: The engine includes a housing having a circular cavity with a rotatable flywheel defining a radially extending power piston(s) disposed therein. An abutment disc connects to a compression piston rotor and rotates synchronously with the flywheel. Compression piston(s) rotate on separate axes within the compression piston rotor and move in and out with respect to the outer periphery of the compression piston rotor. A compression piston stator seals off the top of the compression piston rotor causing the compression pistons to compress a charge of gas to be delivered on top of the power piston(s). Fuel is injected and the combustion zone is ignited. The expanding gases force the power piston(s) and flywheel around the housing producing work. The previous products of combustion are forced out the exhaust system in front of the power piston.

Abstract: In a spark ignition (SI) turbine engine, the combustible fuel-air mixture is compressed by volume displacement and accelerated at high velocity into the ignition source, to reduce the combustion time relative to conventional SI engines, lowering the lean fuel-air mixture flammability limit. Increased process velocity reduces the time exposure of the compressed fuel-air mixture to combustion, permitting near adiabatic operation without pre-ignition. Reducing the time exposure of the combustible gases to high combustion temperatures may reduce emission of oxides of nitrogen. The best power combustion velocity may be maintained throughout the fuel-air mixture range. Lean fuel-air mixture operation may result in fuel savings without a corresponding loss of power, and may reduce carbon dioxide emissions. The high speed operation may provide a quieter engine. An expander or a turbine may recover some of the exhaust energy loss associated with near adiabatic combustion.

Abstract: This invention relates to improvements on rotary engines having annular cylinders, each having at least two pistons drivable in rotation therein, the pistons being fixed respectively to concentric shafts that are thereby independently rotated around their concentric axis. Each of the concentric shafts extends through all the cylinders, which are formed by rotatable discs within an annular master cylinder. The concentric shafts are supported for rotation by bearings mounted within the end housings of the annular master cylinder with each of the concentric shafts having an end extending through one of the end housings for connecting to means for independently coupling the two concentric shafts to a common eccentric shaft.

Abstract: An improved "Wankel-type" rotary engine wherein the same trochoidal cavity employed for effecting a four-phase internal combustion engine operation is also employed to perform a supercharging function in that air is compressed in one chamber (chambers being defined between seals of the rotor with the wall bounding the trochoidal cavity) and transferred to another chamber in synchronization with the latter making its transition from its intake to its compression phase, with such transference being carried out in a manner causing substantial turbulence. The engine can optionally be operated in a diesel mode with diesel fuel injection being made at the conventional phase condition, or as a spark ignition engine with gasoline carburetion of air fed to the supercharging compression chamber being effected. Engine exhaust heat is optionally applied to compressed air or air-fuel mixture as the latter is being transferred respectively in the diesel or spark mode of engine operation.

Abstract: The major components of this rotary engine are two equal sized rotary units, the housing containing them along with associated ignition and cooling systems. Each of the rotary units consists of a shaft, gear, two outer compressor wheels, and one center power wheel which has twice the axial thickness as the compressor wheel. All the wheels are cylindrical in shape with a lobe section comprising a 180.degree. arc on the periphery of each wheel which forms an expanding and contracting volumetric chamber by means of leading and trailing lips. The lobes of the first rotary unit are situated 180.degree. opposite the lobes of the second adjacent mating rotary unit, thus lobes can intermesh with its corresponding wheel.

Abstract: A rotary internal combustion engine with four vanes carried by a rotor engaging an internal oval housing surface to define four chambers that orbit the rotor axis. Two of the chambers, diametrically opposed, are operated as working chambers on a four-phase internal combustion engine basis in phase with each other. Supercharging is continued through an early part of the volume expansion and firing phase, whereby the rate of expansion per degree of rotation is substantial at the time firing is initiated. The other two chambers are operated as air pumping chambers to supercharge the working chambers via an air pressure accumulator. A lubricating liquid within the chamber is introduced into the pumping chambers for engine lubrication with excess being returned to the accumulator. The pressure of the liquid is applied hydraulically against the vanes to urge each radially outward with equal force.

Abstract: A rotary internal combustion engine having an ellipsoidal wall member which forms an ellipsoidal internal chamber. A drive shaft is rotatably mounted in the housing and extends transversely through the ellipsoidal chamber. A substantially cylindrical rotor is secured to the drive shaft within the chamber and has a plurality of circumferentially equidistantly spaced vane members radially slidably disposed within the rotor. A source of fluid pressure communicates with the radially inner end of the vane members to urge the vane members radially outwardly so that the vane members contact selected circumferential sections of the wall portion. A fuel supply means including a rotary compressor supplies a fuel and air mixture to the rotor which thereafter further compresses the fuel between the rotor, the wall portion, and adjacent vane members. The fuel air mixture is ignited by appropriate ignition means to thereby rotatably drive the drive shaft.

Abstract: An internal combustion engine of the rotary type comprises a housing or block provided with a cavity which is cylindrical in one portion and enlarged in another; the side walls of the cavity are flat. A drive shaft is rotatably mounted in the housing for rotation about the axis of the cylindrical portion of the cavity and a cylindrical rotor is mounted in fixed relationship eccentrically on the shaft. The throw of the eccentric is somewhat less than the radius of the cylindrical portion so that the eccentric acts as an impeller driving air around the cylindrical portion of the cavity with some blow-by of air and no metal to metal contact. A pair of fluid barriers or partitions are pivoted at their outer ends on the wall of the cavity and have their opposite ends biased against the rotor in sealing engagement. The partitions thus divide the cavity into a combustion chamber and an air pumping chamber.