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214 results about "Gerotor" patented technology
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A gerotor is a positive displacement pump. The name gerotor is derived from "generated rotor". A gerotor unit consists of an inner and outer rotor. The inner rotor has n teeth, while the outer rotor has n+1 teeth; with n defined as a natural number greater than 2. The axis of the inner rotor is offset from the axis of the outer rotor and both rotors rotate on their respective axes. The geometry of the two rotors partitions the volume between them into n different dynamically-changing volumes. During the assembly's rotation cycle, each of these volumes changes continuously, so any given volume first increases, and then decreases. An increase creates a vacuum. This vacuum creates suction, and hence, this part of the cycle is where the intake is located. As a volume decreases compression occurs. During this compression period, fluids can be pumped, or, if they are gaseous fluids, compressed.
Quasi-isothermal Brayton Cycle engine
InactiveUS6530211B2Increase the turndown ratioHigh operating requirementsInternal combustion piston enginesEngine of arcuate-engagement typeBrayton cycleCombustor
Owner:HOLTZAPPLE MARK T +1
Quasi-isothermal Brayton cycle engine
InactiveUS6336317B1Increase the turndown ratioHigh operating requirementsInternal combustion piston enginesCombination enginesBrayton cycleCombustor
An engine is disclosed. According to one embodiment of the present invention, the engine comprises a compressor, and combustor, and an expander. The compressor compresses ambient air. The combustor burns the compressed air, and produces exhaust gasses. The expander receives the exhaust gases from the combustor, and expands the exhaust gasses. The compressor may be a gerotor compressor or a piston compressor having variable-dead-volume control. The expander may be a gerotor expander or a piston expander having variable-dead-volume control. In another embodiment, an engine comprises a piston compressor, a combustor, a piston expander, and a pressure tank. The piston compressor compresses ambient air. The combustor burns the compressed air, and produces exhaust gasses. The piston expander receives the exhaust gasses from the combustor, and expands the exhaust gasses. The pressure tank receives and stores the compressed air from the compressor. In another embodiment, a gerotor compressor or a gerotor expander comprises an inner gerotor, and an outer gerotor. The inner gerotor and the outer gerotor are driven so that they do not touch. The gerotors may be cantilevered or non-cantilevered.
Owner:TEXAS A&M UNIVERSITY
Oil pump
InactiveUS6679692B1Easy to replacePromote repairRotary/oscillating piston combinations for elastic fluidsOscillating piston enginesFuel tankEngineering
A modular oil pump for use in combination with an internal combustion engine having a dry sump lubrication system. The device features a first gerotor pump having an intake port engageable in communication with at least one engine sump and having an discharge port engageable in sealed communication with a fluid reservoir for the dry sump system. A second gerotor pump, engageable in sealed communication with the fluid reservoir has a discharge port fluidly engageable with the engine lubrication system oil supply conduit. Both the first pump and second pump are assembled from separate housings, and cooperatively engaged inner and outer gears sized for rotation and in line mounting on the engine crankshaft inside a cavity in the housings. The volume pumping capacity of the first pump at a ratio to efficiently drain fluid and gas from the engine sumps and supply the reservoir with a constant supply of lubrication fluid. The device may be assembled from a kit having a plurality of different sized components to adjust the ratio of the pumping volume of the first pump to the second pump.
Owner:FEULING JAMES J
Externally actuated torque coupling for drivetrain
A torque-coupling device comprising a hydraulically actuated friction clutch pack and a gerotor pump provided for generating hydraulic pressure actuating the friction clutch pack. The gerotor pump is selectively actuated by a device external to the gerotor pump and the friction clutch pack, such as an electric motor, friction brake, electro-magnetic clutch, friction mechanism utilizing a magneto-rheological fluid, electro-magnetic brake, etc. The externally driven gerotor pump may be further provided with torque-multiplication gearing, and / or an electronic controller to modulate the actuation of the pump in order to provide flexible control of the hydraulic pressure generated by the gerotor pump.
Owner:DANA AUTOMOTIVE SYST GRP LLC
Torque split gearbox for rotary wing aircraft
A gearbox system for a dual coaxial counter rotating rotor assembly includes an input shaft to input a first torque into the gearbox system and a transfer shaft operably connected to the input shaft to transfer the first torque therethrough. Two gear sets are operably connected to the transfer shaft. Each gear set includes a first output gear to transfer a second torque acting in a first direction to a first rotor of a rotor assembly and a second output gear to transfer the second torque acting in a second direction opposite the first direction to a second rotor of the rotor assembly. The second torque transferred by each gear set of the two gear sets is substantially equal.
Owner:SIKORSKY AIRCRAFT CORP
Gerotor pumps and methods of manufacture therefor
InactiveUS20050063851A1Guaranteed uptimeMinimal noiseEngine of arcuate-engagement typeOscillating piston enginesEngineeringGerotor
Improved gerotor pumps (10, 100, 150, 180, 210, 230, 260, 270, 310, 340, 370, 400) each featuring an outer rotor (18, 184, 202) of a gerotor set (12, 186, 204, 344) located laterally with respect to a preferred eccentricity axis (54), but allowed to float in the orthogonal direction nominally along the preferred eccentricity axis and find its own eccentricity offset rotation axis (5440 ) via mesh of the gerotor set itself are provided in the present invention. Reduced gerotor set operating clearances for the gerotor sets, and therefore higher attained output pressure values, are attained by utilization of any of methods also presented for reforming tip regions of either or both of the inner and outer rotors.
Owner:PHILLIPS EDWARD H
Wet oil sump for four cycle engine
ActiveUS20100012075A1Lubrication of auxillariesLubricant conduit arrangementsGear wheelSports equipment
An oil pump assembly is shown for wet oil sump applications at extreme angles for power sports equipment. The oil pump is comprised of a pump body, an oil pick-up and a driven gear shield, where these components may be integrally formed from die cast aluminum. The pump body includes a rotor body housing a gerotor assembly for pumping. The oil pump is attached to the rear wall of the crankcase and below the crankshaft, and is driven by the crankshaft.
Owner:POLARIS IND INC
Wet oil sump for four cycle engine
Owner:POLARIS IND INC
Electrohydraulic Torque Transfer Device
ActiveUS20080214355A1Increase demandFluid actuated clutchesEngine controllersRotary pumpThermal expansion
A power transmission device includes an actuator having an electric motor driving a pump to supply pressurized fluid to a piston acting on a friction clutch to transfer torque between rotatable input and output members. In one instance, a valve between the pump outlet and the piston selectively traps pressurized fluid acting on the piston without continued energization of the electric motor. A gerotor may be formed from a material having a first coefficient of thermal expansion and a housing formed from a material having a second lower coefficient of thermal expansion to vary pump component clearances as the viscosity of the pumped fluid changes with changes in temperature. A method of controlling the power transmission device includes defining a correlation between pump speed, fluid temperature and fluid pressure, determining fluid temperature, determining pump speed, and rotating the pump to transfer a predetermined quantity of torque.
Owner:AMERICAN AXLE & MFG
Electrically-controlled hydraulically-driven steering device for mobile platform of agricultural robot
InactiveCN102501917AConvenient and flexible operationAdjustable forwardFluid steeringVehiclesGear pumpFuel tank
The invention relates to a hydraulically-driven steering device, in particular to an electrically-controlled hydraulically-driven steering device for a mobile platform of an agricultural robot, which comprises a supporting plate, a double-acting single-piston-rod cylinder, a connecting rod, a hydraulic steering gear, a coupler, a stepping motor, an oil tank, a remote controller, a three-position four-way electromagnetic directional valve, a gerotor motor, a filter, a gasoline engine, a dual gear pump, a speed regulating valve and a one-way valve. The stepping motor is connected to a power input shaft of the steering gear through the coupler, the steering gear is a parallel four-rod steering gear, and the remote controller is used for controlling steering and turn angles of the stepping motor to change the expansion length of a piston rod, so that turn directions and the turn angles of wheels are controlled. The remote controller is used for adjusting the position of a valve spool of the three-position four-way electromagnetic directional valve to control steering of the hydraulic motor, so that advancing, retreating and stopping of a four-wheeled vehicle are realized. The speed regulating valve is added in front of the stepping motor so that stepless speed regulating can be realized, and the electrically-controlled hydraulically-driven steering device is simple in structure, convenient in operation and low in cost.
Owner:JIANGSU UNIV
Gerotor apparatus for a quasi-isothermal brayton cycle engine
InactiveUS7008200B2Simpler gas flow pathLess loadRotary/oscillating piston combinations for elastic fluidsOscillating piston enginesBrayton cycleEngineering
According to one embodiment of the invention, a gerotor apparatus includes an outer gerotor having an outer gerotor chamber, an inner gerotor, at least a portion of which is disposed within the outer gerotor chamber, and a synchronizing apparatus operable to control the rotation of the inner gerotor relative to the outer gerotor. The inner gerotor includes one or more entrance passages operable to communicate a lubricant into the outer gerotor chamber.
Owner:STARROTOR CORPORATION +1
Electrohydraulic torque transfer device and control system
ActiveUS20070215428A1Increase demandDigital data processing detailsSlip couplingControl systemActuator
A power transmission device includes a rotatable input member, a rotatable output member, a friction clutch to selectively transfer torque between the input member and the output member, an actuator providing an actuating force to the friction clutch and a controller. The actuator includes an electric motor having an output shaft drivingly coupled to a gerotor. The gerotor is operable to supply pressurized fluid to a piston acting on the friction clutch. The controller controls the actuator in response to a four-wheel lock request to provide one of a minimum output torque and an output torque greater than a vehicle requested torque to operate the friction clutch in a locked mode.
Owner:AMERICAN AXLE & MFG
Quasi-Isothermal brayton cycle engine
InactiveUS20020014069A1Increase the turndown ratioHigh operating requirementsInternal combustion piston enginesCombination enginesBrayton cycleCombustor
An engine is disclosed. According to one embodiment of the present invention, the engine comprises a compressor, and combustor, and an expander. The compressor compresses ambient air. The combustor bums the compressed air, and produces exhaust gasses. The expander receives the exhaust gases from the combustor, and expands the exhaust gasses. The compressor may be a gerotor compressor or a piston compressor having variable-dead-volume control. The expander may be a gerotor expander or a piston expander having variable-dead-volume control. In another embodiment, an engine comprises a piston compressor, a combustor, a piston expander, and a pressure tank. The piston compressor compresses ambient air. The combustor bums the compressed air, and produces exhaust gasses. The piston expander receives the exhaust gasses from the combustor, and expands the exhaust gasses. The pressure tank receives and stores the compressed air from the compressor. In another embodiment, a gerotor compressor or a gerotor expander comprises an inner gerotor, and an outer gerotor. The inner gerotor and the outer gerotor are driven so that they do not touch. The gerotors may be cantilevered or non-cantilevered.
Owner:HOLTZAPPLE MARK T +1
Gerotor apparatus for a quasi-isothermal Brayton cycle engine
InactiveUS20060239849A1Simple methodPrevent heat transferOscillating piston enginesSealing arrangement for pumpsBrayton cycleGerotor
Owner:TEXAS A&M UNIVERSITY
Gerotor apparatus for a quasi-isothermal Brayton cycle engine
ActiveUS7695260B2Enhance fluid intakeReduce dead volumeEngine of arcuate-engagement typeCombination enginesBrayton cycleGerotor
According to one embodiment of the invention, an engine system comprises a housing, an outer gerotor, an inner gerotor, a tip inlet port, a face inlet port, and a tip outlet port. The housing has a first sidewall, a second sidewall, a first endwall, and a second endwall. The outer gerotor is at least partially disposed in the housing and at least partially defines an outer gerotor chamber. The inner gerotor is at least partially disposed within the outer gerotor chamber. The tip inlet port is formed in the first sidewall and allows fluid to enter the outer gerotor chamber. The face inlet port is formed in the first endwall and allows fluid to enter the outer gerotor chamber. The tip outlet port is formed in the second sidewall and allows fluid to exit the outer gerotor chamber.
Owner:TEXAS A&M UNIVERSITY +1
Crane teaching experiment platform
InactiveCN105047064AIncrease interest in learningStimulate the desire to seek deeper knowledgeEducational modelsHydraulic cylinderElevation angle
The invention provides a crane teaching experiment platform. A maximum hoisting load is 50kg and a maximum hoisting speed is 0.4m / s. A rated rotating speed is 2.0 r / min, a variable amplitude period is 20s and a maximum lifting altitude is 2.5m. The platform possesses lifting, rotation and variable amplitude mechanisms. A system adopts volume speed regulation hydraulic transmission. A frequency-conversion hydraulic pump station provides a power source. Lifting and rotation mechanism actuator adopts a gerotor motor and the variable amplitude mechanism adopts a hydraulic cylinder. A strain gauge is pasted on an arm frame so as to measure a dynamic stress on the arm frame of different mechanism motion under different conditions. Speeds of rotation and lifting and an accelerated speed are measured by an encoder installed on an output shaft of a corresponding decelerator. An elevation angle of the arm frame is measured by an inclination angle sensor installed on the arm frame. Heights of four support legs are adjusted so as to simulate a crane inclination condition. The four support legs are equipped with load sensors so as to measure experiment platform support pressure distribution. The experiment platform can complete a demonstration experiment, a mechanical analysis integration experiment and an open PLC programming experiment.
Owner:DALIAN UNIV OF TECH
Integral accumulator/pump housing
An accumulator / pump housing associated with a motor vehicle hydraulic system that is designed to incorporate a gerotor pump and an accumulator. The accumulator / pump housing comprises a portion of a torque coupling assembly in which a friction clutch selectively engages and disengages a torque coupling case and at least one output shaft. The accumulator / pump housing is located external to a torque coupling housing and at least partially encloses a gerotor pump and a fluid accumulator. The gerotor pump pressurizes the hydraulic fluid and the fluid accumulator selectively stores the pressurized fluid. The hydraulic pump and accumulator supply pressurized fluid to actuate the friction clutch.
Owner:DANA AUTOMOTIVE SYST GRP LLC
Gerotor mechanism for a screw hydraulic machine
InactiveUS7226279B2Improve energy characteristicsReduced hydro-mechanical lossesOscillating piston enginesEngine of intermeshing engagement typeGeneral purposeEngineering
The invention relates to gerotor mechanisms for screw downhole motors used for drilling oil and gas wells, to screw pumps for producing oil and pumping fluids and to general purpose screw motors. The profiles of a rotor (3) and stator (1) are outlined in the end cross section thereof in the form of the envelop of the initial contour of a rack-type tool, which is formed by conjugation of circle arcs when said initial contour of the rack-type tool is run without sliding along corresponding tool circles. The arc radii of the circle arcs of the initial contour are calculated according to determined relations. Said invention makes it possible to improve energy characteristics, increase a life service and producibility, to reduce hydromechanical losses and costs.
Owner:OBSHCHESTVO S OGRANICHENNOJ OTVETABTVENNOSTJU FA RADIUS SERVIS
Adjustable multi-gap gear-connecting rod mechanism dynamics experiment simulation system
InactiveCN111366361AAdjust the sizeSimple design and processingMachine part testingKineticsGear wheel
The invention relates to the technical field of mechanical manufacturing simulation experiment devices, and specifically relates to an adjustable multi-gap gear-connecting rod mechanism dynamics experiment simulation system. The system comprises a base. The system is characterized in that a gear rotor assembly and a crank sliding block assembly are arranged above the base, and the gear rotor assembly is composed of a driving gear, a driven gear, a driving motor and a driven gear fine adjustment platform. Front-back and left-right displacement of the driven gear is adjusted through the driven gear fine adjustment platform. Therefore, the gear backlash between the driven gear and the driving gear is adjusted. A slider-crank assembly is arranged on the side surface of the driven gear. The crank sliding block assembly is composed of a connecting rod, a sliding block and a gap adjusting sliding rail. The size of the sliding pair gap can be adjusted by adjusting the gap of the gap adjustingguide rail, and the beneficial effects are that the structure is simple, and the gear pair tooth side gap, the rotating pair radial gap and the sliding pair gap can be accurately adjusted at the sametime conveniently and rapidly are achieved.
Owner:HARBIN INST OF TECH AT WEIHAI
Electrohydraulic torque transfer device and control system
A power transmission device includes a rotatable input member, a rotatable output member, a friction clutch to selectively transfer torque between the input member and the output member, an actuator providing an actuating force to the friction clutch and a controller. The actuator includes an electric motor having an output shaft drivingly coupled to a gerotor. The gerotor is operable to supply pressurized fluid to a piston acting on the friction clutch. The controller controls the actuator in response to a four-wheel lock request to provide one of a minimum output torque and an output torque greater than a vehicle requested torque to operate the friction clutch in a locked mode.
Owner:AMERICAN AXLE & MFG
Gerotor apparatus for a quasi-isothermal Brayton cycle Engine
InactiveUS7186101B2Simpler gas flow pathLess loadInternal combustion piston enginesCombination enginesBrayton cycleCycloid
According to one embodiment of the invention, a gerotor apparatus includes an outer gerotor having an outer gerotor chamber, an inner gerotor, at least a portion of which is disposed within the outer gerotor chamber, and a synchronizing apparatus operable to control the rotation of the inner gerotor relative to the outer gerotor. The inner gerotor includes one or more entrance passages operable to communicate a lubricant into the outer gerotor chamber.
Owner:TEXAS A&M UNIVERSITY
Gerotor rotary stirling cycle engine
ActiveUS20140271308A1Low thermal conductivityEngine sealsInternal combustion piston enginesEngineeringGerotor
Stirling cycle engines with hot and cold gerotor sets separated by an insulation barrier. The barrier has regenerative gas passages to allow gasses to flow therethrough thus connecting displacing chambers of the hot and cold gerotor sets. Each gerotor set has a rotor within a stator and displacing chambers created in an offset space therebetween. The stators may rotate about the rotors, or vice-versa. Either the rotor of the cold gerotor set has an axis of rotation offset with respect to the rotor of the hot gerotor set or the stator of the cold gerotor set has an axis of rotation offset with respect to the stator of the hot gerotor set, and the non-offset rotors or stators rotate about a common axis and are rotationally connected and create an angular phase offset between connected hot and cold chambers. The gerotor apparatuses may be utilized for a Stirling cycle engine for generating electricity, for example.
Owner:FRLIN ETHAN W
Variable displacement gerotor pump
InactiveUS20080019846A1Reduce oilEliminates, orRotary piston pumpsRotary piston liquid enginesGear pumpGerotor
A variable displacement pump having an inner rotor (gerotor) and an outer rotor is disclosed. Advantageously, the pump provides a movable outer rotor capable of changing the amount of fluid transferred from an inlet to an outlet. Optionally, a biasing member is connected to the outer rotor for preventing movement of the outer rotor below a predetermined amount of pressure at the outlet.
Owner:METALDYNE LLC
Gerotor Apparatus for a Quasi-Isothermal Brayton Cycle Engine
InactiveUS20070237665A1Simpler gas flow pathLess loadEngine of arcuate-engagement typeOscillating piston enginesBrayton cycleEngineering
According to one embodiment of the invention, a gerotor apparatus includes an outer gerotor having an outer gerotor chamber, an inner gerotor, at least a portion of which is disposed within the outer gerotor chamber, and a synchronizing apparatus operable to control the rotation of the inner gerotor relative to the outer gerotor. The inner gerotor includes one or more entrance passages operable to communicate a lubricant into the outer gerotor chamber.
Owner:TEXAS A&M UNIVERSITY
Fluid displacement system using gerotor pump
InactiveUS20150071795A1Rotary/oscillating piston combinations for elastic fluidsEngine of arcuate-engagement typeGear pumpFluid bearing
A fluid displacement system for a fluid producing subterranean well includes a well extending from a surface to a subterranean fluid bearing formation, the formation being in fluid communication with the well; and a gerotor pump in the well for pumping fluid from the formation to the surface.
Owner:INTREVEP SA
Axial piston engine with integrated filling pump
ActiveUS20060051229A1Avoid forceEngine of arcuate-engagement typeOscillating piston enginesEngineeringGerotor
The invention relates to an axial piston engine with a filling pump integrated in a receiving bore of the axial piston engine, which filling pump comprises a gerotor set with an externally toothed inner ring and an internally toothed outer ring and also an inner thrust plate and an outer thrust plate. The two thrust plates enclose the gerotor set between them and, on their surfaces facing away from the gerotor set, are in each case supported via a pressure field seal, which surrounds the pressure field regions formed in the thrust plates, in such a way on the housing walls axially enclosing the filling pump that lateral play in the form of axial mobility of the filling pump is guaranteed.
Owner:DANFOSS POWER SOLUTIONS INC
Electronically-controlled hydraulically-actuated coupling
A power transmission device includes a friction clutch operable to selectively transfer torque between an input member and an output member. An actuator is operable to provide an actuating force to the friction clutch. The actuator includes an electric motor having an output shaft drivingly coupled to a gerotor. The gerotor is operable to provide pressurized fluid to a piston acting on the friction clutch.
Owner:AMERICAN AXLE & MFG
Rotor structure of inscribed gear pump
InactiveUS20060067849A1Increase volumeEngine of arcuate-engagement typeOscillating piston enginesGear pumpGear wheel
An inscribed gear rotor includes a housing forming a cylindrical space, a driven rotor including a plurality of inner gears, a driving rotor including a plurality of outer gears engaging with the respective inner gears, a plurality of interspaces formed between the inner gears of the driven rotor and the outer gears of the driving rotor respectively, a volume of each of the interspaces being increased and decreased so as to complete one cycle in a rotation for the purposes of performing an intake and a discharge of fluid, an inlet port being in communication with the cylindrical space, an outlet port being in communication with the cylindrical space, and a groove formed on a side face of the driving rotor and being in communication with the inlet port and the at least one of the interspace.
Owner:AISIN SEIKI KK
Electronically-controlled hydraulically-actuated coupling
A power transmission device includes a friction clutch operable to selectively transfer torque between an input member and an output member. An actuator is operable to provide an actuating force to the friction clutch. The actuator includes an electric motor having an output shaft drivingly coupled to a gerotor. The gerotor is operable to provide pressurized fluid to a piston acting on the friction clutch.
Owner:AMERICAN AXLE & MFG
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