Matches 1 - 50 out of 175 1 2 3 4 >


Match Document Document Title
9022749 Swing drive controlling system for construction machine  
The system includes: a variable displacement hydraulic pump supplying pressure oil to a hydraulic actuator; a pressure detector detecting a pump discharge pressure from the hydraulic pump; a...
9016312 Fluid flow control apparatus for hydraulic pump of construction machine  
An apparatus for controlling the flow of a hydraulic pump of a construction machine according to the present disclosure includes: a pressure sensor detecting pressure signals corresponding to...
9004882 Variable displacement vane pump having multiple dampening springs  
A variable displacement pump includes: a first urging member arranged to urge the cam ring in a direction to increase the eccentric amount; a second urging member arranged to urge the cam ring in...
8989906 Method and device for regulating fluid pump pressures  
A method is provided for regulating fluid pump pressures by detecting an elevation differential between a fluid flow control device and the distal end of a fluid line in communication with the...
8911216 Method, apparatus, and computer-readable storage medium for controlling torque load of multiple variable displacement hydraulic pumps  
Methods, apparatuses, and computer program products for controlling the torque load of multiple variable displacement hydraulic pumps are described herein. A pump displacement limit for each...
8870548 System and method for pressure compensation in a pump  
Systems and methods for maintaining substantially a baseline pressure in a chamber of a pumping apparatus are disclosed. Embodiments of the present invention may serve to control a motor to...
8834132 Apparatus having control valve and variable capacitance pump and hydraulic pressure circuit of internal combustion engine in which the same apparatus is used  
In a hydraulic pressure circuit including an introduction section through which oil is introduced, a main passage section installed at a downstream side of the introduction section to be...
8826646 Fluid delivery device  
A fluid delivery device, in particular for delivering exhaust gas posttreatment media, such as a urea-water solution, for an internal combustion engine, includes a movable work wall, in particular...
8814534 Oil supply apparatus for transmission  
Oil supply apparatus having an electric motor, an oil pump driven by the electric motor and supplying oil to a transmission, an oil temperature sensor detecting oil temperature, and a controller...
8807957 Apparatus for detecting the fluid condition in a pump  
A pump control system which detects a fluid condition in a pump is disclosed. The pump control system may include a control event based on the fluid condition in the pump. The pump control system...
8794027 Compressor and refrigerating apparatus  
A compressor includes a casing, a screw rotor, a slide member with at least one economizer port, and a control unit controlling a position of the slide member along the axis of the screw rotor to...
8734122 Control and diagnostic systems for a variable capacity engine oil pump and an engine oil pressure sensor  
A control system includes an oil pump module and a diagnostic module. The oil pump module, based on engine operating conditions, selectively generates a first mode request signal to initiate a...
8738241 Pump overspeed protection method and machine using same  
A machine having a pump overspeed protection system operating thereon includes an internal combustion engine, a plurality of ground engaging elements, and a drivetrain coupling the internal...
8690557 Variable displacement vane pump  
A variable displacement vane pump includes: a plate side high pressure introduction groove formed in the pressure plate or in the cam ring, formed so that an entire is positioned within a radial...
8672647 Water injected scroll air compressor  
A high reliability water injected scroll air compressor is provided with an orbiting scroll, a fixed scroll corresponding to the orbiting scroll, a motor that generates driving force for making...
8622713 Method and apparatus for detecting the fluid condition in a pump  
A pump control system which detects a fluid condition in a pump is disclosed. The pump control system may include a control event based on the fluid condition in the pump. The pump control system...
8608452 Variable coolant pump  
A variable coolant pump for a cooling circuit of an internal combustion engine that has a pump housing in which is mounted a hollow shaft that is driveable by a pulley. At one end of the hollow...
8589038 Hydraulic drive apparatus for construction equipment  
A hydraulic drive system for a working machine provides improved safety during forced regeneration. Upon input of a forced regeneration command signal from a forced regeneration switch, a...
8585376 Water-injection type scroll air compressor  
Disclosed is a water-injection type scroll air compressor whose pre-stopping operation time for drying can be reduced while enhancing compressor efficiency. The compressor body 1 includes a water...
8562307 Pump equipment  
An electrical signal input type displacement control device capable of reducing pipes on hydraulic equipment, and hydraulic equipment including the same. The pump equipment includes two the pump...
8550796 Variable capacity fluidic machine  
An internal gear fluidic machine, in particular a pump for the lubrication circuit of a motor vehicle engine, comprises an operating part including an external gear (2) and an internal gear (4),...
8523536 Axial piston pump, and power transmission device with axial piston pump  
An axial piston pump has: a cylinder body that forms therein a cylinder chamber extending in an axial direction of a drive shaft and rotates integrally with a driven shaft; a piston that...
8517012 Multiple stage blowers and volutes therefor  
A multiple stage variable speed blower for Continuous Positive Airway Pressure (CPAP) ventilation of patients includes two impellers in the gas flow path that cooperatively pressurize gas to...
8511216 Hydraulic actuator unit  
A hydraulic actuator unit includes a first electric motor assembly formed by mounting one of a pair of electric motors to one of a pair of electric motor covers, wherein the first electric motor...
8512006 Hydraulic pump with variable flow and pressure and improved open-loop electric control  
The present invention is a variable displacement pump system for delivering precisely controlled oil flow and pressure, including a variable displacement pump having an inlet passage, an outlet...
8496445 Control system and method for pump output pressure control  
A pump system includes pump having a control feature which, responsive to a supply of pressurized working fluid, reduces the pressure of the working fluid pressurized by the pump. The control...
8480378 Method and device for controlling a hydraulic drive system  
In a method and device for controlling a hydraulic drive system, in particular in a crane or construction machine, a closed hydraulic circuit has a hydraulic pump and motor in which depending upon...
8430645 Two stage pressure regulation system for variable displacement hydraulic pumps  
A pump having a housing with an actuator member positioned inside for controlling the flow generated by the pump. A first decrease port is connected to the housing and has a surface area in...
8430646 Variable volume clearance pocket for a reciprocating compressor cylinder  
A controllable variable volume clearance pocket for reciprocating compressor cylinders is disclosed. The invention includes a device for varying the clearance volume of a variable volume clearance...
8366405 Screw compressor with capacity control slide valve  
A screw compressor includes a casing, a screw rotor disposed in a cylinder portion of the casing to define a compression chamber, and a capacity control slide valve. Fluid sucked into the...
8262373 Compressor having wire retainer  
A compressor comprising a shell, a compression mechanism disposed within the shell, a drive shaft for operating the compression mechanism, and a motor for driving the drive shaft. A terminal is...
8257056 Service pack variable displacement pump  
A service pack, in certain embodiments, includes an engine, a variable displacement pump coupled to the engine, and a controller configured to control displacement of the variable displacement...
8235163 Steering boost system  
A hydraulic steering assistance system for vehicles, including a power steering pump and a variable-ratio gear, particularly a booster drive for the power-steering pump wherein the power steering...
8202061 Control system and method for pump output pressure control  
A pump system includes pump having a control feature which, responsive to a supply of pressurized working fluid, reduces the pressure of the working fluid pressurized by the pump. The control...
8162618 Method and device for controlling pump torque for hydraulic construction machine  
A current load rate of an engine 10 is computed and a maximum absorption torque of at least one hydraulic pump 1, 2 is controlled so that the load rate is held at a target value. Engine stalling...
8087900 Agricultural harvester with propulsion load shifting between dual engines  
An agricultural harvester includes a first power unit which is couplable with a first primary load. The first primary load includes a threshing system load. A second power unit has a threshold...
8029247 System and method for pressure compensation in a pump  
Systems and methods for maintaining substantially a baseline pressure in a chamber of a pumping apparatus are disclosed. Embodiments of the present invention may serve to control a motor to...
7999502 Pumping system  
The present invention provides a pumping system (60) comprising: a pumping mechanism (64); a motor (51) for driving the pumping mechanism; a drive control (50) for controlling the motor; and means...
7985054 Multicylindrical rotary compressor, compression system, and freezing device using the compression system  
In a multicylindrical rotary compressor constituted to be usable by urging an only first vane with respect to a first roller by means of a spring member to switch a first operation mode in which...
7974757 Agricultural harvester with dual engine failure power transfer system  
An agricultural harvester includes a first power unit which is couplable with a first primary load. The first primary load includes a threshing system load. A first motor/generator is mechanically...
7841838 Rotary closed type compressor and refrigerating cycle apparatus  
A rotary closed type compressor is configured such that an inside of a case becomes high pressure, and the rotary closed type compressor comprises a first cylinder and a second cylinder having...
7762788 Fluid conveyance system and fluid conveyance device  
A fluid conveyance system includes: a fluid conveyance device including a micro pump module which compresses a flexible tube communicating with a fluid containing receptacle and discharges a...
7726948 Hydraulic pump with variable flow and variable pressure and electric control  
A pump system including a control system for controlling a variable flow pump for controlling oil flow and oil pressure in a hydraulic circuit in an engine. The system includes a pump member, an...
7686599 Scroll compressor with device to limit orbit radius  
A scroll compressor has a device which may be actuated to limit the orbit radius of the orbiting scroll. The device is moveable between an unactuated position at which it is spaced from a hub for...
7665972 Apparatus and method for controlling operation of reciprocating compressor  
An apparatus and a method for controlling an operation of a reciprocating compressor which can improve operational efficiency of the reciprocating compressor are provided. The apparatus for...
7651323 Smart control valve for compressors  
Disclosed herein is a smart control valve for compressors that is capable of easily accomplishing compression and communication in a compression chamber of a cylinder, without performing the...
7625188 Heart booster pump  
A heart pump has a pump chamber and a pump element that strokes between a retracted and an extended position. A motor rotates a drive shaft in a single direction. A reversing mechanism coupled...
7600988 Air-demand-controlled compressor arrangement, particularly for commercial vehicles  
Air-demand-controlled compressor arrangement, particularly for commercial vehicles, includes a motor unit for generating a rotating movement which, by way of an interposed...
7566204 Multicylindrical rotary compressor, compression system, and freezing device using the compression system  
In a multicylindrical rotary compressor constituted to be usable by urging an only first vane with respect to a first roller by means of a spring member to switch a first operation mode in which...
RE40830 Compressor capacity modulation  
A pulsed modulated capacity modulation system for refrigeration, air conditioning or other types of compressors is disclosed in which suitable valving is provided which operates to cyclically...

Matches 1 - 50 out of 175 1 2 3 4 >