Abstract: A cylinder structure of a rotary piston internal combustion engine includes a rotating shaft, the two sides of the rotating shaft are installed on machine bases, front deflector rods and rear deflectors rod are fixed to the two outer ends of the rotating shaft respectively, the included angles between the front deflector rods and the rear deflector rods are 29 degrees, the front deflector rods at the two outer ends are arranged in the radial direction of the rotating shaft at 180 degrees, and the rear deflector rods at the two outer ends are arranged in the radial direction of the rotating shaft at 180 degrees, and a combustion device and a compression device are sequentially arranged between the two machine bases.

Abstract: A rotary engine, parts thereof, and methods associated therewith is provided. The engine is modular and adjustable to accommodate a variety of requirements and preferences. The system includes a combustion assembly having a housing and a power rotor positioned therein. The power rotor rotates in a first direction from the beginning of each combustion process through the end of each exhaust process. The system also includes a compression assembly linked to the combustion assembly such that the compression rotor rotates in the first direction from the beginning of each intake process through the end of each compression process. A tank assembly in fluid communication with the compression assembly and the combustion assembly provides stability to the system while eliminating or otherwise reducing transitional loses.

Abstract: The invention is an internal combustion engine converting the fuel/air mixture (17) to energy, comprising at least one engine having at least one engine cover (2), at least one external piston (5) having geared rotary ducts and providing the combustion and compression volumes inside said engine body (1), having fuel/air mixture (17) and exhaust gas (18) discharge openings (4.1), one internal piston (7) which rotates inside said internal piston space (6) and compresses the fuel/air mixture (17) sucked in through the suction opening (6.1) behind it and pumps this into the external piston inner space (4) and an external piston (5) rotating in the opposite direction.

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 method and cruise control system for controlling a vehicle cruise control includes driving the vehicle with the cruise control active and set to maintain a vehicle set target speed, and registering a current vehicle condition, which includes at least a current vehicle position, a currently engaged gear ratio, available gear ratios, current vehicle speed, available maximum propulsion torque and road topography of coming travelling road comprising a next coming uphill slope. Based on the current vehicle condition a downshift is predicted at a coming vehicle position in the coming uphill slope due to vehicle speed decrease and at least one activity is selected which results in that the downshift can be postponed or avoided. The cruise control is controlled according to the selected activity in order to postpone or avoid, for example a downshift from a direct gear and thereby saves fuel.

Abstract: An internal combustion engine that includes a rotary head that has an expansion chamber and that includes intake and exhaust slots. A drum is disposed in close noncontacting proximity to the inner side of the rotary head. The drum and the rotary head are substantially rotationally symmetric about a common axis. Radially moveable plates respond to a mechanical control mechanism adapted to move each plate from a retracted position in which the plate is located entirely within the outer surface of the drum and an extended position in close proximity to an upper surface of the expansion chamber to substantially seal the expansion chamber. At least one of the plates is present between the intake slot and the exhaust slot such that the combustion gas within the expansion chamber exerts a force on the plate and the drum to produce rotational motion of the rotary head about the common axis.

Abstract: Devices and methods for moving a working fluid through a controlled thermodynamic cycle in a positive displacement fluid-handling device (20, 20?, 20?) with minimal energy input include continuously varying the relative compression and expansion ratios of the working fluid in respective compressor and expander sections without diminishing volumetric efficiency. In one embodiment, a rotating valve plate arrangement (40, 42, 44, 46) is provided with moveable apertures or windows (48, 50, 56, 58) for conducting the passage of the working fluid in a manner which enables on-the-fly management of the thermodynamic efficiency of the device (20) under varying conditions in order to maximize the amount of mechanical work needed to move the target quantity of heat absorbed and released by the working fluid. When operated in refrigeration modes, the work required to move the heat is minimized. In power modes, the work extracted for the given input heat is maximized.

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: Embodiments of rotary vane engines include rotors that rotate about an axis of rotation. The rotors can be moved in directions substantially perpendicular to the axis of rotation to vary expansion and/or compression ratios of the rotary vane engines. The ability to vary the expansion and/or compression ratios can facilitate optimization of the performance of the rotary vane engines as operating conditions vary.

Abstract: The split-chamber rotary engine includes a rotary power module having a case with a circular rotor installed therein. At least one, and preferably two or more combustion chambers are formed peripherally in the rotor. The generally circular rotor cavity of the case includes at least one, and preferably two or more, peripheral expansion chambers. A corresponding number of reciprocating compressor modules are installed upon the case, with the compressor module axis being aligned generally tangentially to the rotor periphery. The compressor module includes concentric reciprocating pistons and valves that compress the air charge and transfer the compressed charge to the rotary power module for power production. The compressor module is driven purely by combustion gas pressure acting upon its inboard piston. No mechanical linkage exists from power module to compressor module. The engine may include multiple rotor and case rows, as desired.

Abstract: An engine with expansion piston located on the end of a motion arm connected to the engine shaft. On the shaft, rotating compression pistons are mounted. The distance between the two piston types allows for the production of great torque. The geometry of expansion chamber and compression chamber is concentric toroidal. A pressure chamber stores the air-fuel mixture coming from the compression chamber to the expansion chamber and is therefore interposed between the two. The timing of the two or more sliding ports attached to the compression chambers determines the compression volume, while the valves control the communication of the pressure chamber with the other chambers.

Abstract: A rotary vane engine system for using exhaust heat energy of a fuel-based heat engine. The heat engine includes a crankshaft being driven by a combustion cycle, and the heat engine generates exhaust gases by combustion. The system comprises an independent air system, wherein the independent air system contains air separate to the exhaust gases. A heat exchanger system is provided for transferring exhaust heat energy from the exhaust gases to the air contained in the independent air system to generate pressurized air. A rotary vane engine is also provided having a housing, a rotor contained within the housing and coupled to the crankshaft of the heat engine, and a plurality of vanes extending radially from the rotor. The pressurized air is expanded within the rotary vane engine for rotation of the rotor thereby providing drive to the crankshaft of the heat engine.

Abstract: A radial pulsed rotary engine a rotor mounted for rotation between two parallel circular discs and creates pulsed focused fuel/air mixture ignitions sequentially within many wedge shaped chambers of a flat circular rotor. The rotor has a number of wedge shaped chambers that are defined by a number of rotor partitions that extend from positions near the center of the rotor to positions at or near the outer periphery of the rotor and are sequentially in communication with a fuel/air supply, defined by one of the disks, and an outer peripheral portion that is sequentially in communication with exhaust discharge openings that are defined by a housing within which the rotor is positioned. Spark plugs are mounted to the housing and fire sequentially in response to the position of the rotor within the housing.

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 rotary-piston machine consists of two operating units. The first one comprises a horizontal operating cylinder (1) with cylindrical shaft (5), connected to the main shaft (4) and sealed with rings to the walls of the cylinder (1). The shaft (5) has a first friction element (9) pressed against the internal wall of the cylinder (1). The second unit comprises a cylindrical body (15) mounted to the main shaft (4) with a firmly connected to its circumference inner ring (16) of a bearing with an outer ring (17) provided of an articulated joint (18) connected to a frame (19) that is connected to a valve (13) which press a second friction element (14) to the shaft (5). Both units move in synchronization.

Abstract: A hydrogen G-cycle rotary vane internal combustion engine has a sodium vapor chamber transferring excess combustion heat into combustion chambers. An active water cooling system captures heat from the engine housing stator, rotor, and sliding vanes and transfers it back into the combustion cycle by premixing it with hydrogen to reduce peak combustion temperature and with an early an late stage combustion chamber injection to help transfer heat from the sodium vapor chamber, to control chamber temperature, and to increase chamber vapor pressure. A combustion chamber sealing system includes axial seals between the rotor and the stator, vane face seals, and toggling split vane seals between the outer perimeters of the sliding vanes and the stator. Sliding vanes reciprocate laterally in and out of the rotor assisted by a vane belting system. A thermal barrier coating minimizes heat transfer and thermal deformation. Solid lubricants provide high temperature lubrication and durability.

Abstract: An engine is shown and disclosed having individual components that can be optimized depending upon the situation, application or desired performance of the engine. The individual components perform the intake, compression, combustion, expansion and exhaust elements of the cycle. These individual components can all be optimized for the particular application in which this engine is designed. The components can be easily individually controlled either mechanically or electrically and easily removed for repair or replacement.

Abstract: A rotary internal combustion engine has a hollow stator with inner cylindrical surface, and a right-prism rotor having rhombus-shape base with round angles and convex sides whose big diagonal equals the diameter of the stator. Two cavities within the rotor on opposite ends of the big diagonal of rhombus-shape base form principal combustion chambers with spark plugs. The hollow stator contains a diametrically opposed space separators sealingly engaged with the surface of the rotor. Variable volume intake, compression, power and exhaust chambers of the engine are formed by the inner surface of the stator, outer surface of the rotor and the side surfaces of the space separators. Intake and exhaust chambers are connected to the intake and exhaust systems via respective conduits. Compression and power chambers are connected to the combustion chambers via a slot openings controlled by the sliding covers moving within a radial rectangular grooves in the rotor.

Abstract: An improved rotary engine that involves sealing the engine with double spigot seals and redesigning the cam so that the engine duplicates every 10 degrees rather than the 18 degrees of the most relevant prior art. The first part of the cam separates the intake from the exhaust and has a close tolerance fit that prevents the exhaust from containing the air/fuel mixture. In the compression/power area of the cam, a gap is created that allows the transfer of the air/fuel mixture to be moved into firing position.

Abstract: A heat engine having a rotary vane compressor and a rotary vane turbine operates in a highly efficient thermodynamic cycle which includes a power expansion phase up to ambient pressure and a limited temperature constant volume combustion followed by a constant pressure combustion and/or a constant temperature combustion. A compound propulsion engine utilizing the thermodynamic cycle has a primary stage having an axial compressor and a rotary vane turbine, and a secondary stage having an axial turbine and a rotary vane compressor, the two stages being aero-thermodynamically coupled to each other without provision of an interconnecting drive shaft.

Abstract: A three-stage internal combustion rotary engine, comprised of: a compressor feeding compressed air to a combustor for compression, fuel injection, combustion, and expansion of gases which rotate the rotor. The combustor rotor generates torque and drives the compressor and afterburner rotors simultaneously. The afterburner receives the combusted gases and scavenged air from the combustor for secondary combustion and expels the exhaust gases. Each unit consists of a housing joined together on a common axis and a rotor with a shaft mounted in an eccentric position of the housing side-walls. The shafts are interconnected by splines. The rotors have radial blind slots which contain slidable, movable vanes fitted with half-round knobs on opposite sides, aligned with the top surface and fit in the hemispherical grooves on the interior side-walls of the housing. This maintains a permanent contact with the interior housing periphery, regardless of gas pressures and rotating speed.

Abstract: A rotary internal combustion engine has a hollow stator with inner surface formed by two concentric cylindrical surfaces, which fluently transit one into the other via ramp surfaces, and a cylindrical rotor, having the same radius as smaller concentric surface of the stator. The rotor has vanes that move radially within the rotor tightly contouring the inner surface of the stator during rotor rotation. The cavities within the stator where its inner radius equals that of the rotor constitute combustion chambers, which connect to the variable-volume working chambers formed by outer surface of the rotor, inner surface of the stator with bigger radius and the side of the vane via valve-controlled orifices ending in the areas of the stator ramp surfaces. During rotor rotation the vanes provide compression of fuel mixture into combustion chambers and accept the energy of expanding gasses following fuel mixture ignition in the combustion chamber.

Abstract: A computer controlled rotary piston engine includes a blower housing containing a rotatable impeller assembly, for pushing ambient air into the housing, and forcing the air to pass through a normally open valve mechanism into a combustion chamber. A plurality of fuel injectors are selectively operable for injecting fuel into the combustion chamber, followed by selective operation of at least one spark plug for igniting the fuel/air mixture, thereby causing the valve mechanism to close, and the combustion gases to pass through a plurality of spaced apart intake manifolds into always open input ports of a piston chamber for rotating a vaned or bladed rotary piston therein, followed by spent combustion gases being forced out of a plurality of spaced always open exhaust ports into an exhaust manifold. The distance the piston travels during a power cycle is adjustable, and inversely proportional to the frequency of combustion or number of combustion cycles within a given period of time.

Abstract: A rotary engine is provided that comprises a compression cylinder and combustion cylinder divided by a separation wall. Air or a fuel/air mixture is drawn into the compression cylinder, compressed, and then transferred to the combustion cylinder. The compressed air or air/fuel mixture is ignited in the combustion cylinder, creating an expansion of the combustion gases which drives the system. The compression and combustion cylinders have epicycloidal-shaped chambers that each house a single vane. The vanes pass through the crankshaft and adjust to remain in contact with the chamber walls as the crankshaft rotates. The compression ratio of the present invention can be maximized by adjusting the thicknesses of the compression and combustion cylinders as well as by offsetting the positions of the compression and combustion vanes with respect to one another.

Abstract: A rotary internal combustion engine has a shaft, a compression chamber, an ignition chamber, a center wall, a first rotor, and a second rotor. The shaft is fixed to the rotors while being rotatably mounted to the compression and ignition chambers. The compression chamber has an oval shaped chamber wall and receives fuel and compresses the fuel. The ignition chamber has an oval shaped chamber wall and receives compressed fuel from the compression chamber and combusts the compressed fuel. The center wall is located between the compression chamber and ignition chamber and allows passage of compressed fuel from the compression chamber to the ignition chamber. The first rotor has a circular perimeter surface and is rotatably received within the compression chamber. The second rotor has a circular perimeter surface and is rotatably received within the ignition chamber.

Abstract: An internal combustion rotary engine which includes a housing encased rotor having: cam actuated inwardly and outwardly extending vanes, a combustion chamber communicating with a fluid inlet port to the vanes within the housing, and an exhaust chamber communicating with the fluid outlet port from the vanes of the housing, air and fuel injectors associated with the combustion chamber for delivery of an air and fuel mixture to the combustion chamber, and igniter means associated with the combustion chamber for igniting air and fuel mixture within that chamber. Controls are provided to properly control the sequence of air and fuel injection, fuel ignition and exhaust valve opening and closing during operation of the engine to provide simpler and more economical rotary engine.

Abstract: A rotary internal combustion engine has a shaft, a compression chamber, an ignition chamber, a center wall, a first rotor, and a second rotor. The shaft is fixed to the rotors while being rotatably mounted to the compression and ignition chambers. The compression chamber has an oval shaped chamber wall and receives fuel and compresses the fuel. The ignition chamber has an oval shaped chamber wall and receives compressed fuel from the compression chamber and combusts the compressed fuel. The center wall is located between the compression chamber and ignition chamber and allows passage of compressed fuel from the compression chamber to the ignition chamber. The first rotor has a circular perimeter surface and is rotatably received within the compression chamber. The second rotor has a circular perimeter surface and is rotatably received within the ignition chamber.

Abstract: A family of sliding vane rotary power devices provides two and four-phase internal combustion engines, as well as serving as pumps and compressors. All of these devices have an improved donut shaped rotor assembly having an integrated axial pump portion, an end shaft, a plurality of radial-directed passages and an equal plurality of sliding vanes in respective slots that are medially guided by cam followers moving in a pair of cam grooves The devices include an axial pump portion that acts as a supercharger for the four-phase internal combustion engine, a scavenger for the two-phase internal combustion engine, and as an axial pressure inducer when operating as a pump or compressor.

Abstract: A rotary internal combustion engine has a shaft, a compression chamber, an ignition chamber, a center wall, a first rotor, and a second rotor. The shaft is fixed to the rotors while being rotatably mounted to the compression and ignition chambers. The compression chamber has an oval shaped chamber wall and receives fuel and compresses the fuel. The ignition chamber has an oval shaped chamber wall and receives compressed fuel from the compression chamber and combusts the compressed fuel. The center wall is located between the compression chamber and ignition chamber and allows passage of compressed fuel from the compression chamber to the ignition chamber. The first rotor has a circular perimeter surface and is rotatably received within the compression chamber. The second rotor has a circular perimeter surface and is rotatably received within the ignition chamber.

Abstract: An improved rotary engine that harmoniously produces multiple, sequential cycles. A main housing is comprised of a concentric stator sandwiched between a front and an aft wall enclosing a cylindrical inner space. A network of combustors are stationed about the stator periphery. Mounted on a central axis within the inner space is a concentrically revolving rotor body. The combustors sequentially introduce a working fluid into a plurality of expansion chambers symmetrically stationed within the rotor body. As the rotor is propelled by the working fluid, a variable vane transversely mounted within each expansion chamber simultaneously performs work on a fluid in a compression region. The compressed fluid of each cycle is discharged and diverted to compliment the combustor of a sequential cycle. A high degree of power and efficiency is achieved using simple mechanics to produce multiple cycles during each revolution.

Abstract: A rotary internal combustion engine is disclosed that includes a housing defining a cavity with a central axis, and the cavity of the housing is divided into three compartments. The first compartment forms a suction chamber, and the third compartment forms a combustion chamber. A drive shaft extends through the cavity, a first rotor in the first compartment is fixedly mounted on the drive shaft, a first vane is mounted on the first rotor, a second rotor in the third compartment is fixedly mounted on the drive shaft, and a second vane is mounted in the second rotor. The second compartment is positioned between the first and second compartments and holds compressed air after leaving the first chamber and before entering the second chamber.

Abstract: An internal combustion rotary engine that employs resilient, flexible vanes attached to a rotor that spins within an oval cavity in a housing. The vanes, which are long enough to extend slightly radially from the rotor by a distance beyond the interior surface of the cavity, bend in response to the cyclical variation between the rotor and the oval cavity in order to define four chambers and form a sliding seal with the interior surface. As the vanes revolve with the rotating rotor, the volumes of these four chambers vary cyclically and enable the four phases of an approximate Otto Cycle. The engine is more efficient than a conventional, reciprocating engine because the expansion force of the combustion gas acts directly on the rotating element with a minimum of moving parts.

Abstract: A new mechanical movement consisting of a main stationary cylinder into which there is a rotary cylinder configured to rotate about a fixed rotor axis, and through which a certain number of vanes are anchored at the center of the main cylinder. The vanes slide in and out of the rotary cylinder by means of wigglets since the internal rotary cylinder is off-center of the main cylinder. As the internal cylinder rotates the space between two adjacent vanes increase or decrease creating a vacuum on one side of the main cylinder and a compression on the other side. This mechanism may be configured as a four cycle internal combustion engine, a steam engine high pressure water motor a compressor or a vacuum pump.

Abstract: The present invention provides an internal combustion engine and a method of manufacturing the internal combustion engine. The internal combustion engine comprises a housing, a first rotor, first and second impellers and a compression cam. In a preferred embodiment, the housing has a first inner surface defining a first cavity therein, the first rotor is journalled for rotation within the first cavity and is situated to define compression and exhaust cavities on opposing sides therein, first and second impellers located in, and slidable with respect to, first and second opposing radial apertures in the first rotor, and the compression cam is fixedly coupled to the housing. The compression cam has a working surface portion that corresponds to a profile of the inner surface to force the first and second impellers to contact the inner surface and a dead surface portion that departs from the profile to allow the first and second impellers to withdraw from the inner surface.

Abstract: An eccentric engine has been used for many different purposes, such as in a piston motor, in a steam engines in a compressor and pump. An eccentric engine include two or more cylinders (stator and rotors) located one within other. The stator has two sections (compression and expansion) and the rotor has slots and blades which are fastened at one end at a rod at a minimum of two symmetrically points about blade center. The blades can reciprocate in slots of rotor. In modification 1 the blade rod has a shape of crankshaft and rotates in opposite direction of rotor; the internal surface of stator is oval or wave formed. In modification 2 the sections of compression and expansion are located along the stator axis, and the rotor is common in both sections. The engine has two combustion chambers. In modification 3 engine has two rotors are separated by partition and connected by rotary blade rod. The rotors can have different diameters and widths.

Abstract: A rotary engine utilizes an expansion chamber and crescent piston to capture the energy of expanding combustion gases through out substantially all of each revolution of the piston. The rotary engine uses a crescent piston, the movement of which is guided by the combined action of a hub having a saddle supporting the piston and a can track. The invention burns fuel in a separate combustion chamber charged from a coaxially mounted compressor and controlled by a pass gate sentry valve. The rotary engine of the invention is cooled by an internal coolant injection system. The coolant solution may contain a alkaline reagent to react with and neutralize acidic components of the combustion gases which would otherwise remain in the exhaust and contribute to air pollution. The rotary engine of the present invention is adaptable to compression ignition fuels and spark ignition fuels. The invention may be constructed of conventional metallic materials as well as composites and ceramics.

Abstract: A radial Combustion motor is provided that includes a compression section, or a combustion section, or both. Each of the combustion section and the compression section includes a cylindrical rotor that rotates in a cylindrical chamber. An inner wall of each chamber includes multiple ridges such that a rotor, when positioned in the rotor's respective chamber, divides the chamber into multiple sub-chambers in conjunction with each of the multiple ridges. Each rotor includes multiple sealing blade slots that each extend the length of the rotor and that each slidably receive one of multiple sealing blades. Rotation of each rotor causes the sealing blades disposed in the sealing blades slots of the rotor to slide outward until an outer edge of each sealing blade slidably engages the inner wall of the associated chamber and to remain engaged with the inner wall for so long as the rotor rotates.

Abstract: A rotary piston engine (20) is shown that includes a housing (22) having a toroidal working chamber with inlet (56) and exhaust (54) ports. First and second piston assemblies (30 and 32), each of which includes at least one pair of diametrically opposed pistons (30A and 30B, and 32A and 32B), are located in the working chamber. Piston assemblies (30 and 32) are connected to the engine output shaft through a differential (78) and two pairs of the Sakita gear sets (74 and 76), each of which gear sets includes a Sakita type 1 gear (74A and 76A) and a Sakita type 2 gear (74B and 76B). The piston assemblies rotate at variable speed, whereby pistons of the slower speed are trailing pistons during portions of the power and intake phases of engine operation. In one embodiment, one of the Sakita gears includes teeth in the form of rollers. Also, spark plugs embedded within piston assemblies (30 and 32) are accessible from outside.

Abstract: A rotary type internal combustion engine having stationary stator housing and a rotor, which is rotatably mounted within the stator housing. The rotor has a thrust face, which is exposed to combusted gases within the engine. The thrust face has a variable surface area. The stator has a profiled inner surface or a contoured end cap which varies the surface area of the thrust face exposed to combusting gases and thus provides the engine with a required torque characteristic.

Abstract: An engine is constructed with a rotor housing having a rotor chamber formed in a cylindrical shape in the inside thereof and sealed at the opposing ends, such as by a cover at each end. At least one combustion chamber is provided which is coupled through the rotor chamber in one side thereof to provide a combustion space for a fuel mixture. A suction expansion valve is provided for opening and closing a passage directed into the combustion chamber and an intake pipe in the rotor chamber of the rotor housing. A compression exhaust valve is provided for opening and closing a passage directed into the combustion chamber and an exhaust pipe, in the rotor chamber of the rotor housing. A rotor is installed in an axial relationship within the rotor chamber of the rotor housing. The rotor includes at least one movable lug projecting therefrom. The movable lug is preferably formed on an outer circumference face of the rotor and performs suction. compression, expansion and exhaust strokes according to a cycle.

Abstract: A rotary engine, motor, compressor or pump having a stator housing (101) and a rotor (102). A variable volume working chamber is formed between the stator housing (101), rotor (102), thrust face (176) of moveable arm (116) and the thrust face of moveable arm (118). The surface area of thrust face (176) varies with the varying profile of the stator housing inner surface (166) as the rotor (102) rotates to provide a desired torque characteristic. The surface area of the thrust face of moveable arm (118) is constant during at least part of the working cycle.

Abstract: A grooved double combustion chamber rotary engine includes a rotary compression unit, a rotary gas motor unit, and a combustion chamber, the rotary compression unit being connected to the respective rotary gas motor unit and the combustion chamber to constitute a stroke, and two strokes being alternating to achieve power output.

Abstract: Disclosed is a rotary internal combustion engine of which all operations are circular motions and therefore energy consumed for mechanical transmission is reduced and power output is continuous and stable. The rotary internal combustion engine mainly includes an intake-compression chamber, an exhaust-power chamber, and a combustion chamber that has an intake port and an exhaust to communicate with the intake-compression chamber and the exhaust-power chamber, respectively. Two pairs of rotors and rotational valve plates are separately provided in the intake-compression chamber and the exhaust-power chamber to mount around a power output shaft extending through the two chambers, so that the rotors, the valve plates, and the power output shaft rotate synchronously.

Abstract: A rotary vane combustion engine, having a compressor, a combustion chamber, an expander, sensors for sensing critical conditions, and a microprocessor for controlling the engine responsive to sensed conditions. Projection of vanes from the compressor or expander rotor is controlled by arms which include bearings riding in a cam or track formed in the compressor or expander housing. The track maintains a predetermined gap between the vanes and the respective housings, thereby reducing the friction between vane and housing and the possibility of binding of a vane against the housing. Valves vent the expander to the atmosphere and allow the expansion ratio of the expander to be controllably varied. These valves are controlled by the microprocessor.

Abstract: A rotary internal combustion engine includes a housing having a separate compression chamber and power chamber formed therein with a fuel and air mixture reservoir disposed intermediate the two chambers. A plenum chamber is disposed in the housing intermediate the power chamber and the fuel and air mixture reservoir with a rotating impeller disposed therein forming a magazine which rotates synchronously with the rotors to deliver compressed volumes of fuel and air mixture into the power chamber for enhanced power delivery capabilities.

Abstract: A multi-chamber rotary piston internal combustion engine includes an engine housing having interior walls defining a plurality of internal cylindrical cavities, at least one of the cavities being disposed in a first housing level and at least one other of the cavities being disposed in a second housing level spaced apart but adjacent to the first housing level. A plurality of rotary pistons and cylinders are movably mounted relative to the cavities which, in operation, cooperatively define, at least partially with the housing interior walls, a multiplicity of sequentially-arranged chambers including a gas intake chamber, and at least one gas compression chamber located in the first housing level and an ignition chamber, gas expansion chamber and a gas expulsion chamber located in the second housing level, with the cylinders, pistons and cavities being operatively arranged so that gas intake, compression, ignition, expansion and gas expulsion take place simultaneously during one revolution.

Abstract: An engine having one stage of combustion between a rotary compressor and a rotary motor, and another stage of combustion within the motor, includes compressor and motor vane rotors that rotate in respective housing portions on a common drive shaft; first and second transfer passages fluid connected between respective exhaust ports of the compressor and intake ports of the motor, first and second combustion chambers being formed within the respective transfer passages, the combustion chambers being periodically sequentially pressurized by gas flow from the compressor exhaust ports. First and third cam-actuated poppet valves in the first and second transfer passages prevent upstream gas flow from the respective combustion chambers into the compressor. Second and fourth cam-actuated poppet valves in the first and second transfer passages prevent upstream gas flow from the motor into the respective combustion chambers.

Abstract: A continuous combustion, pinned vane type, positive displacement, rotary compressor and expander engine system comprises a compressor which outputs compressed air, a combustor which effects continuous combustion of a combustion gas mixture containing fuel and compressed air and produces a combustion gas output. An expander is coupled to receive a mixture of combustion gas and an expansion fluid as an expandable working gas. The expander expands the expandable working gas and performs work to cause rotation of an engine output shaft. The engine system includes an expansion fluid flow path having an input port to which the expansion fluid is supplied, and an output port coupled to combine the expansion fluid with the combustion gas as the expandable working gas.

Abstract: A continuous combustion, pinned vane type, positive displacement, rotary compressor and expander engine system comprises a compressor which outputs compressed air, a combustor which effects continuous combustion of a combustion gas mixture containing fuel and the compressed air and produces a combustion gas output. An expander is coupled to receive a mixture of combustion gas and an expansion fluid as an expandable working gas. The expander expands the expandable working gas and performs work to cause rotation of an engine output shaft. Each the compressor and the expander comprises a respective pinned vane type, positive displacement, rotary device. The engine system further includes an expansion fluid flow path having an input port to which the expansion fluid is supplied, and an output port coupled to combine the expansion fluid with the combustion gas as the expandable working gas.

Abstract: A sliding-blade heat engine having a vortex combustion chamber and oval-shaped turbine and compressor chambers with cylindrical turbine and compressor rotors rotatably mounted eccentrically therein, Each rotor has at least two rectangular blades slidably mounted in slots extending through the cylindrical rotor in mutually perpendicular relation and each blade is independently movable relative to the other in a radial direction. Each blade has a guide element extending from opposed sides and through the opposed end walls of the respective rotor which are slidably received in guide grooves in the respective chamber end walls. The rotors are connected together by a shafts in concentric relation whereby rotation of the turbine rotor causes simultaneous rotation of the compressor rotor and the guide elements traveling in the guide grooves cause the blades to extend and retract radially with their outer ends following the inner periphery of the respective chamber side wall with a constant clearance.