Abstract: An internal combustion engine, includes a 1st rotor having two blades, rotating in the circular volume of the motor body block with variable angular speed; a 2nd rotor having two blades, rotating in the circular volume of the motor body block with variable angular speed, a rolling bearing provided between the 1st rotor and the 2nd rotor enables rotation of the 1st rotor and the 2nd rotor on each other; a 1st unidirectional rolling bearing between the 1st rotor and the back cover enables rotation of the 1st rotor and the 2nd rotor at different times and at different extents; a 3rd unidirectional rolling bearing transferring the 2nd rotor's rotation movements to the output shaft is provided on the internal collar of the 2nd rotor; a 4th unidirectional rolling bearing transferring the 1st rotor's rotation movements to the output shaft is provided on the internal collar of the 1st rotor.

Abstract: A rotary engine including at least two pilot subchambers each in parallel fluid communication with the internal cavity, so that each pilot subchamber is in fluid communication with the combustion chambers as the rotor rotates. Each of the at least two pilot subchambers in fluid communication with a corresponding pilot fuel injector. At least one ignition source is configured for igniting fuel in the pilot subchambers. A compound engine assembly and a method of combusting fuel in a rotary engine are also discussed.

Abstract: A rotor for a positive displacement compressor assembly having a housing defining an inlet, an outlet, and a rotor cavity in communication with the inlet and the outlet. The rotor may comprise a rotor body and a porous inner core enclosed within the rotor body. The rotor may comprise a tapered rotor body having an outer radius that decreases from a first end to a second end thereof. In one form, the positive displacement compressor assembly may comprise a supercharger assembly for an internal combustion engine.

Abstract: An internal combustion engine including internal cavities slidingly receiving a respective piston to define a respective combustion chamber, at least one inlet port for each internal cavity in fluid communication with the combustion chamber at least during the intake phase and a beginning of the compression phase, at least one exhaust port for each of the internal cavities and in fluid communication with the combustion chamber during the exhaust phase, a plenum for receiving pressurized air, and conduits in fluid communication with the plenum. Each conduit defines a fluid communication between a first respective internal cavity and a second respective internal cavity through the inlet ports. The combustion chamber of the first respective internal cavity undergoes the beginning of the compression phase simultaneously with the combustion chamber of the second respective internal cavity undergoing the beginning of the intake phase.

Abstract: 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.

Abstract: A method of controlling an air intake flow in a rotary engine having primary and secondary inlet ports, including positioning the secondary inlet port rearwardly of the primary inlet port and forwardly of the exhaust port along a direction of a revolution of the rotor, and controlling air intake flows communicating between an air source and the primary and secondary inlet ports. During engine start-up, a primary valve is closed to prevent the intake air flow between the primary inlet port and the air source and a secondary valve is opened to allow the intake air flow between the secondary inlet port and the air source. A rotary engine defining different compression ratios through actuation of a valve is also discussed.

Abstract: A housing for an engine is provided. The housing includes an intake manifold configured to supply air to at least one chamber defined within the housing, a fuel port configured to supply fuel to the at least one chamber, and a compression control port configured to control at least one of a pressure and a volume of a fuel-air mixture in the at least one chamber during a compression cycle of the engine. The compression control port includes a passage defined through the housing, and at least one valve disposed in the passage and configured to control a flow through the passage.

Abstract: A mechanism for varying the stroke length of an internal combustion engine during each cycle of operation includes a gear set with a first gear non-rotatably mounted to the engine block and a second gear having teeth formed on an inner surface thereof meshing with the first gear to achieve a uniform mechanical crank arm and a variable cam arm for producing a varying length of piston reciprocation throughout the overall stroke cycle of the engine. The orientation of the crank arm and the cam arm relative to the axis of piston reciprocation is selected for causing the crank arm and the cam arm to cooperatively produce a positive torque on the crankshaft at the top dead center position of the piston. The gear set is also selectively configured and dimensioned to achieve a predetermined ratio of the length of the cam arm to the length of the crank arm.

Abstract: The present disclosure is directed at the control of an effective compression ratio setting in an engine which may use a variety of fuels or fuel blends. The effective compression ratio may be selected based upon information from a fuel sensor and stored information regarding the detected fuel composition. The effective compression ratio may be adjusted for a selected cylinder by intake or exhaust valve timing.

Abstract: An internal combustion engine with rotatable bodies each received in a respective internal cavity. The engine includes at least one inlet port for each internal cavity in fluid communication with the combustion chamber(s) thereof at least during their intake phase and a beginning of their compression phase. The bodies are angularly offset with the beginning of the compression phase of the combustion chamber(s) defined by each body being simultaneous with at least a beginning of the intake phase of the combustion chamber(s) defined by a different one of the bodies. A respective conduit provides a fluid communication between an inlet port for each body and an inlet port for the different one of the bodies, with each conduit being in fluid communication with a plenum for receiving pressurized air. A method of feeding air to an internal combustion engine is also provided.

Abstract: A method and apparatus for controlling an air input in a rotary engine, including selectively controlling a plurality of inlet ports communicating with an internal combustion cavity of the engine, the ports located serially downstream of the exhaust port relative direction of a revolution of a rotor of the engine. The inlet ports are controlled to alter air intake at various engine operational stages, such as start up, idle, etc., to allow for varying operational requirements to be met. For example: when a power demand on the engine lower than a predetermined threshold, control may be effected by opening a primary inlet port and closing a secondary inlet port; and, when the power demand exceeds the predetermined threshold, control may be effected by opening the primary inlet port and opening the secondary inlet port, the secondary inlet port being located such as to be in communication with the exhaust port throughout portions of the revolution of the engine to purge exhaust gases of the engine.

Abstract: An internal combustion engine is provided. The engine comprises at least one combustion chamber. The engine is suitable for various types of fuel. The engine, depending on fuel type, may have at least one spark plug. The engine uses an external source of compressed oxidant, such as air, which is delivered from a compressor and/or pressurized storage tank. Compressed oxidant, such as air, is delivered directly into the combustion chamber. Fuel is delivered directly into the combustion chamber. Oxidant and fuel mixture is ignited either by means of a spark plug, laser ignition, or by other means, or ignites spontaneously, depending on fuel type and pressure in the combustion chamber. The engine may comprise at least one cylinder, or may be of rotary or other type. A hybrid vehicle based on such an engine is provided. An automatic parking system for such a vehicle is provided.

Abstract: A method and apparatus for controlling an air input in a rotary engine, including selectively controlling inlet ports communicating with an internal combustion cavity of the engine, the ports located serially downstream of the exhaust port. The inlet ports are controlled to alter air intake at various engine operational stages, such as start up, idle, etc., to allow for varying operational requirements to be met. For example: when a power demand on the engine is lower than a predetermined threshold, control may be effected by opening a primary inlet port and closing a secondary inlet port; and, when the power demand exceeds the predetermined threshold, control may be effected by opening the primary inlet port and opening the secondary inlet port, the secondary inlet port being in communication with the exhaust port throughout portions of the engine revolution to purge exhaust gases.

Abstract: An internal combustion engine is provided. The engine comprises at least one combustion chamber. The engine is suitable for various types of fuel. The engine, depending on fuel type, may have at least one spark plug. The engine uses an external source of compressed oxidant, such as air, which is delivered from a compressor and/or pressurized storage tank. Compressed oxidant, such as air, is delivered directly into the combustion chamber. Fuel is delivered directly into the combustion chamber. Oxidant and fuel mixture is ignited either by means of a spark plug, laser ignition, or by other means, or ignites spontaneously, depending on fuel type and pressure in the combustion chamber. The engine may comprise at least one cylinder, or may be of rotary or other type. A hybrid vehicle based on such an engine is provided. An automatic parking system for such a vehicle is provided.

Abstract: A barrel engine has a housing with a longitudinal bore with a pair of spaced apart bearing surfaces. An output shaft is disposed in the bore and has an outer surface with engagement elements. A cam plate has a central portion and a cam portion. The central portion has an outer surface with a pair of spaced apart bearing surfaces and a bore with an inner surface with engagement elements. The cam plate is received on the output shaft with the engagement elements on the inner surface of the cam plate bore being mechanically coupled to the engagement elements on the outer surface of the output shaft such that the shaft and cam plate are coupled for rotation and the cam plate is longitudinally slidable with respect to the shaft. The cam plate is disposed such that the bearing surfaces are generally aligned with the bearing surfaces of the bore.

Abstract: A method and apparatus for controlling an air input in a rotary engine, including selectively controlling inlet ports communicating with an internal combustion cavity of the engine, the ports located serially downstream of the exhaust port. The inlet ports are controlled to alter air intake at various engine operational stages, such as start up, idle, etc., to allow for varying operational requirements to be met. For example: when a power demand on the engine is lower than a predetermined threshold, control may be effected by opening a primary inlet port and closing a secondary inlet port; and, when the power demand exceeds the predetermined threshold, control may be effected by opening the primary inlet port and opening the secondary inlet port, the secondary inlet port being in communication with the exhaust port throughout portions of the engine revolution to purge exhaust gases.

Abstract: An electrical signal filter defined by a block of dielectric material with a top surface, a bottom surface, side surfaces, and through-holes extending between the top and bottom surfaces. In one embodiment, a plurality of walls extend outwardly from the top surface to define a peripheral rim and filter cavity. A pattern of metallized and unmetallized areas is defined on selected surfaces of the block including an area of metallization that covers at least a portion of the top surface and at least one of the walls to define at least one input/output electrode on the wall. In one embodiment, a pair of input/output electrodes are formed on a pair of posts defined on one of the walls and the filter is adapted for mounting to a printed circuit board with the rim of the walls against the board and the posts coupled to respective input and output pads on the board.

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: A split-cycle variable capacity rotary spark ignition engine system having at least a first rotary configuration (C1) including repetitively volume variable working chambers [60, 61, 62] for carrying out the combustion-expansion and exhaust phases and at least a second rotary configuration (C2) including repetitively volume variable working chambers (70, 71, 72) for carrying out the intake and compression phases of a four phase engine cycle. Dividing seal means (73, 74 of C1, 75, 76 of C2) for periodically dividing each of successive working chambers into a volume enlarging leading portion and a volume contracting trailing portion. Discharge valve means for varying compression chamber capacity through discharging fraction of trapped intake gas from compression chambers. A first phase altering arrangement is provided for varying the phase relation between the first rotary configuration (C1) and the second rotary configuration (C2).

Abstract: A rotary motion device having piston valves that define an open region that are adapted to engage a power tooth of the power ring as the power ring rotates around the piston valves and the piston valves rotate about their own separate axis that is fixed with respect to the base housing of the device. The power ring is provided with radially inward and outward ports in one form that are adapted to communicate with radially inward and outward ports of a static member of the device. The ports are utilized to compress and expand a gas and in one form are utilized for an internal combustion chamber to create an internal combustion rotary motion device.

Abstract: A rotary motion device having piston valves that define an open region that are adapted to engage a power tooth of the power ring as the power ring rotates around the piston valves and the piston valves rotate about their own separate axis that is fixed with respect to the base housing of the device. The power ring is provided with radially inward and outward ports in one form that are adapted to communicate with radially inward and outward ports of a static member of the device. The ports are utilized to compress and expand a gas and in one form are utilized for an internal combustion chamber to create an internal combustion rotary motion device.

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: The combustion vibration estimating apparatus comprises an inputting unit for inputting limiting values of plant data, weather data and internal pressure variation, an internal pressure variation characteristic grasping unit for making internal pressure variation of a combustor into a mathematical model from the input plant data and weather data, a combustion vibration region estimating unit for applying a limiting value of the internal pressure variation to the mathematical model obtained by the internal pressure variation characteristic grasping unit to obtain combustion vibration-prone to be generated region, and an outputting unit for outputting a combustion vibration region estimation result by the combustion vibration region estimating unit.

Abstract: A throttle loss recovery turbine and supercharger device (10) comprises a housing (12) having a movable intake port (36) and a separately movable exhaust port (38). An outer drum is rotatably placed within the housing. An inner drum (24) is rotatably disposed within the housing, and within an inside diameter of the outer drum (18). The inner drum has an axis of rotation (30) eccentric to an axis of rotation of the outer drum, defining a variable volume annular space (26) therebetween. The inner and outer drum are configured to rotate within the housing at a 1:1 ratio with one another, and the intake and exhaust ports are each in air flow communication with some portion of the annular space. A number of vanes (20) are each interposed radially between the inner and outer drums. Each vane is pivotably attached at one end (22) to the outer drum, and is attached at an opposite end to the inner drum. At least one drum is coupled to an engine crankshaft.

Abstract: A rotary engine having two interdigitated rotors (FIGS. 1a, 1b, or 1c) each of which has two radial vanes dividing a cylindrical cavity in the liquid-cooled rotor housing (11 in FIG. 2) into four chambers. The rotors are coupled to a planetary gear system (FIG. 2 ) by connecting rods (19 and 29) to planet gears (22 and 32) that rotate about a fixed sun gear (27) having a diameter twice the diameter of the planet gears. During one revolution of the output shaft (25), which is connected to the planet gear cage (24), the rotors alternately speed up and slow down, causing the size of each of the four chambers to vary from a maximum size to a minimum size twice. As the chambers rotate about the axis of the cylindrical cavity, they pass an inlet port (13), outlet port (14) and ignition plug port (15) contained in the housing so that intake, compression, explosion and exhaustion occurs in each chamber for one revolution of the output shaft.

Abstract: A rotary engine in which two rotors having interleaving radial vanes revolve inside a cylindrical cavity and are connected to a planetary output gear system which causes them to alternately speed up and slow down. The radial vanes divide the cylindrical cavity into four chambers in which intake, compression, explosion and exhaustion occur. At least two glow plugs, each of which contains a coil of refractory wire, are located at different angular positions relative to the axis of the cavity. The glow plugs are selected so that one, which cools more rapidly than the other, will cause ignition at an earlier time than another of the glow plugs that cools more slowly. A passageway containing an adjustable, pressure-sensitive, valve vents the compression chamber to the intake chamber to allow the compression ratio to be varied, to allow a greater expansion ratio than compression ratio, and to allow adjustment of the time at which ignition occurs during each cycle.

Abstract: A sliding vane engine, where the vanes slide with at least of one of an axial and radial component of vane motion, and where the compression ratio of the engine may be variably controlled. The engine includes a stator and a rotor in relative rotation, and a plurality of vanes in rotor slits defining one or more main chamber cells and one or more vane slit cells. The vanes contain extended pins that move in a pin channel for controlling the sliding motion of the vane. Fuel is mixed by incorporating air turbulence generators at or near the intake region. The intake and exhaust regions of the engine also incorporate a wave pumping mechanism for injecting and scavenging air from the main chamber cells and the vane slits. The compression ratio of the engine may be varied while the engine is in operation, and the engine geometry provides for an extended temporal duration at about peak compression. The engine is insulated by using segmented ceramic inserts on the stator and rotor surfaces.

Abstract: A rotary engine in which two rotors having interleaving radial vanes (3,4,8,9) revolve inside a cylindrical cavity and are connected to a planetary output gear system which causes them to alternately speed up and slow down. An axial shaft (5) attached to one rotor and passing through the other rotor contains a thrust bearing (10) to prevent the rotors from moving apart. The rotor vanes and disk-shaped end plates (1,6) which contain cooling means divide the cylindrical cavity into four chambers in which intake, compression, explosion and exhaustion occur. A passageway (39,39') containing an adjustable, pressure-sensitive valve (40) vents the compression chamber to the intake chamber to allow the compression ratio to be varied and to provide for a greater compression ratio than expansion ratio.

Abstract: Combustion engine of high efficiency comprising a stator and a rotor, a duct shaped as a closed circle between said stator and rotor, at least one vane sliding in the duct and being fastend to the rotor, wherein the expansion takes place at a substantially constant temperature and at a substantially constant pressure. Alternatively, the combustion engine is designed as a generator of a voltage, with the at least one vane being a permanent magnet sliding in the duct, and with field coils being arranged adjacent the duct for the induction of a voltage.

Abstract: A rotary engine having an epitrochoidal engine component and a supercharger component connected to the engine component by a variable transmission, the engine component having valve plugs for varying the effective displacement of air compression according to engine load and speed, the engine component having a regional combustion chamber design and fuel injection system designed to improve the timing and completeness of combustion.

Abstract: An internal combustion engine rotary engine includes four pistons mounted for rotary movement in an annular piston chamber, a drive shaft disposed at an angle of 30.degree. to 80.degree. relative to the piston axis of rotation, and two drive rod assemblies interconnecting the pistons in paired relationship. A connecting rod of each assembly extends through the shaft and each is drivingly coupled thereto.

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: An internal combustion power plant system provides a rotary engine and a rotary fuel/air mixture compressor for the rotary engine on a common driveshaft, coaxially mounting each end and supported between them by a gearbox which synchronizes operation of various ignition and valve and abutment components of the system; compressed fuel/air mixture is supplied to and ignited in a valve-isolated manifold chamber in the rotary engine in successive charges following which each ignited charge is valved radially into one of plural expanding chambers defined by the rotary engine rotor and abutment mechanism, where it urges rotation of the rotor and then exhausts radially; in preferred embodiment the exhaust actuates a parallel fuel-feed which booster pumps fuel/air mixture into the manifold chamber; detail improvements disclosed include designs of runners, abutments, valving and rotary compressor mechanism.

Abstract: In a combustion engine, the amount of working medium is controlled by allowing the engine to suck in an amount of working medium corresponding to full gas operation, of which a portion is then allowed to flow out again without being compressed, while an amount proportional to the current load is retained and compressed, the compression ratio being regulated as a function of the amount of working medium retained. In such an engine there is a movable member (4) for adjusting the compression ratio, the position of said member being controlled by a control means (9). Furthermore, there is at least one spill flow valve (12), the open-time of which is variable as a function of the current load of the engine.

Abstract: A rotary internal combustion engine having an elliptical wall member which forms an elliptical internal chamber. A drive shaft is rotatably mounted in the housing and extends transversely through the elliptical 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 the elliptical wall. Moreover, each vane member is of a sliding laminated construction to ensure a sealing engagement between the vane member and the wall surface. A fuel and air mixture is supplied to the rotor via an air suction chamber which thereafter is compressed with the fuel between the rotor, the wall portion and adjacent vane members.

Abstract: A rotary internal combustion engine having a housing defining a chamber is disclosed. A fixed shaft extends coaxially through the chamber. A plurality of vanes are pinned to a collar which is rotative about the shaft. One vane is rigidly secured to the collar. A cylindrical drum is positioned in the working chamber with the centerline of the drum radially offset from the centerline of the working chamber. The vanes extend through slots or apertures in the rotor to close proximity with the chamber wall. A fuel delivery system communicates with the chamber through approximately 90 degrees of the compression cycle. An exhaust opening communicates with the chamber at the end of the expansion cycle whereby the compression ratio is substantially less than the expansion ratio. In one embodiment means are provided to vary the compression and expansion ratios.

Abstract: A rotary piston internal combustion engine includes a two-curve housing, a triangular piston rotor in the housing and a pressure reservoir connected through a channel to the compression chamber, or volume, formed between the housing and rotary piston. Rotation of the piston rotor divides the compression volume into a main volume and an auxiliary volume of decreasing size, the channel being located to communicate with such auxiliary volume. A valve in the channel is opened and closed by a control system in variable synchronism with movement of the piston rotor. The control system includes a synchronous transmission adjustable in phase in response to temperature and/or pressure in the pressure reservoir, which in turn is influenced by throttling of inlet air to the engine, and such control system may include apparatus actuable to heat or cool the pressure reservoir, all to permit Diesel operation of the engine.

Abstract: Rotary piston engine comprising a casing and a substantially tri-angular rotor disposed in the trochoidal cavity of the casing. The casing is provided with a take-out port for drawing compressed air from the compressing working and a discharge port located to open to the exhaust working chamber. The take-out port is connected through a throttle-controlled valve with the discharge port and so located that squish flow directed to the ignition area is weakened by taking out a part of the compressed gas through the take-out port.