207 results about "Gerotor" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.