Condition Responsive Control Of Drive Transmission Or Pump Displacement Patents (Class 417/212)
  • Patent number: 10323632
    Abstract: A lubricating oil supply device for a vehicle includes an electric oil pump and an electronic control unit. The electronic control unit is configured to control the electric oil pump, determine whether or not lubricating oil needs to be supplied by the electric oil pump, control a drive duty of the electric oil pump to a first value when the ECU determines that lubricating oil needs to be supplied, and control the drive duty to a second value that is smaller than the first value when the ECU determines that lubricating oil does not need to be supplied. The electronic control unit is configured to perform duty variable control for controlling the drive duty to a third value, which is between the first value and the second value, during a predetermined changeover transition period, in changing over the drive duty from the first value to the second value.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: June 18, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kaoru Goto, Akiko Nishimine
  • Patent number: 10240840
    Abstract: Systems and methods for scroll unloading detection are provided and include a scroll compressor having a scroll compression mechanism. A controller determines a predicted discharge temperature of the scroll compressor, receives an actual discharge temperature of the scroll compressor, and compares the predicted discharge temperature with the actual discharge temperature. The controller also compares a speed of the scroll compressor with a speed threshold and detects unloading of the scroll compression mechanism based on the comparison of the predicted discharge temperature with the actual discharge temperature and based on the comparison of the speed of the scroll compressor with the speed threshold. The controller performs at least one of generating an alert and a remediating action in response to detecting the unloading of the scroll compression mechanism.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: March 26, 2019
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Jacob A. Groshek
  • Patent number: 10119545
    Abstract: The present invention provides apparatus featuring a signal processor or processing module that may be configured at least to: receive signaling containing information about calibrated motor speed and power data for a hydronic pumping system; and determine system pumping flow rate and pressure associated with an equivalent hydronic system characteristic variable, based at least partly on the signaling received. The signal processor or processing module may be configured to provide corresponding signaling containing information about the system pumping flow rate and pressure determined. The corresponding signaling may contain information used to control the hydronic pumping system.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: November 6, 2018
    Assignee: Fluid Handling LLC
    Inventors: Andrew A. Cheng, Graham A. Scott, James J. Gu
  • Patent number: 9975404
    Abstract: A vehicle power adjusting device, applied in auxiliary dynamic loads on a vehicle comprises a control chip, a temperature sensor, a speed detecting wire, and a relay; when the power for starting the vehicle is insufficient, auxiliary dynamic load is closed to release power, such that the power for starting is sufficient, so as to decrease the accelerating time, reduce toxic emission and enable the auxiliary dynamic load by using the surplus power during the cruising vehicle and the wasted power during the decelerating vehicle, thereby achieving the purpose of reducing the energy consumption, having powerful starting, completing combustion, reducing exhaust gas, and also saving fuel, reducing carbon emission and protecting environment effects.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: May 22, 2018
    Assignee: ATALI TECHNOLOGY CO., LTD
    Inventor: Jui-Hsuan Lu
  • Patent number: 9932979
    Abstract: An oil pressure control device for supplying oil pressure by rotating a hydraulic pump, by means of a motor, comprises an oil pressure sensor; a speed instruction operation unit for outputting a speed instruction value, based on a difference between an oil pressure determination value from the oil pressure sensor and an oil pressure instruction value; a torque instruction value operation unit for calculating a torque instruction value, based on a difference between a speed determination value and the speed instruction value; and a current control unit for controlling a current of the motor, based on the torque instruction value, and adds the load variation compensation speed outputted from the load variation compensation unit and the speed instruction value.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: April 3, 2018
    Assignee: OKUMA CORPORATION
    Inventor: Tomohiro Shibata
  • Patent number: 9580888
    Abstract: An exemplary embodiment of the present specification relates to an apparatus for controlling a hydraulic pump for an excavator with respect to a change of an operation mode, the apparatus including: an operating unit configured to generate an operation signal according to an operation of an operator, and including a joystick or a pedal; an oil flow supplying unit configured to supply oil to actuators, in order to drive a plurality of actuators corresponding to the operation signal, and including a plurality of pumps and a plurality of logic valves; and a control unit configured to control the oil flow supplying unit by using a priority algorithm for each operation considering a use frequency and a load of the actuator with respect to a change of a predetermined operation mode according to the operation signal.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: February 28, 2017
    Assignee: Doosan Infracore Co., Ltd.
    Inventors: Min Ha Ahn, Woo Yong Jung, Dal Sik Jang, Hyeon Sik Ahn, Kwang Ho Lim
  • Patent number: 9562525
    Abstract: A linear compressor is provided. The linear compressor includes a pair of planar spring assemblies mounted to an inner back iron assembly at opposite sides of the inner back iron assembly. A magnet is mounted to the inner back iron assembly at an outer surface of the back iron assembly.
    Type: Grant
    Filed: February 10, 2014
    Date of Patent: February 7, 2017
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: Gregory William Hahn, Thomas R. Barito
  • Publication number: 20150125316
    Abstract: A fluid conveying device includes: a tube; a cam having protrusions; fingers arranged along the tube between the tube and the cam; a driving rotor which rotates the cam to sequentially push the fingers by the protrusions in a flowing direction of a fluid, repeatedly pressuring and opening of the tube, driving the cam; a detection unit which detects a rotating position of the cam; a control unit which calculates a cam rotation angle along a cumulative ejection volume, using a first approximation formula for an ejection area H where the cumulative ejection volume increases substantially in proportion to the rotation angle of the cam and a second approximation formula for a constant area J where the cumulative ejection volume little increases or decreases even if the cam rotates, driving the driving rotor until a rotating position of the cam corresponding to a designated cumulative ejection volume is reached.
    Type: Application
    Filed: January 9, 2015
    Publication date: May 7, 2015
    Inventor: Makoto KATASE
  • Patent number: 9022749
    Abstract: 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 control valve controlling a supply of the pressure oil to the hydraulic actuator; a controller controlling a pump displacement of the hydraulic pump; a hydraulic motor rotating an upper structure of the construction machine; a swing relief valve defining a relief pressure of the hydraulic motor; and a control lever switching a control valve for the hydraulic motor. The controller includes: an adjuster that, when a pump discharge pressure detected by the pressure detector exceeds a first set value, conducts an adjustment to reduce the pump displacement; and a canceller that cancels the adjustment when the pump discharge pressure falls below a second set value. The second set value is equal to or larger than the first set value.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: May 5, 2015
    Assignee: Komatsu Ltd.
    Inventors: Teruo Akiyama, Hisashi Asada, Jin Kitajima, Kazuhiro Maruta, Takeshi Ooi, Masashi Ichihara
  • Publication number: 20150117987
    Abstract: Provided is a substrate treating apparatus. The substrate treating apparatus includes: a transfer chamber conveying a substrate; a process chamber disposed adjacent to the transfer chamber and performing a treating process o the substrate; and a drive assembly supplying a power by which a component of the transfer chamber or the process chamber operates, wherein the drive assembly includes: a cylinder connected to pipes; a piston disposed to be movable inside the cylinder and connected to the component by a drive shaft; and a pipe control unit automatically adjusting a moving speed of the piston.
    Type: Application
    Filed: October 30, 2014
    Publication date: April 30, 2015
    Inventors: Jin Ho CHOI, Ju Mi YOO
  • Patent number: 9016312
    Abstract: 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 various control signal input values of the construction machine; a shuttle block including a plurality of shuttle valves dividing hydraulic lines connected with the pressure sensor into groups and extracting pressure oil of a hydraulic line under the highest pressure among hydraulic lines included in the corresponding group; auxiliary pressure sensors detecting the pressure of the pressure oil discharged from the shuttle block; electro proportional control valves in which opening rates are adjusted according to an applied signal and flows applied to signal lines are controlled to adjust discharge flows of main pumps; and a controller controlling the electro proportional control valves so that the opening rates of the electro proportional control valves are adjusted according to the magnitude of the pressure signal at the
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: April 28, 2015
    Assignee: Doosan Infracore Co., Ltd.
    Inventors: Hong Cheol Yun, Duc Woo Park
  • Patent number: 9004882
    Abstract: 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 a direction to decrease the eccentric amount; a control hydraulic chamber arranged to receive a discharge pressure, and thereby to move the cam ring against the urging force of the first urging member; and a hydraulic pressure introduction section configured to introduce the discharge pressure to the control hydraulic chamber when the discharge pressure becomes greater than a predetermined pressure which is in a range where the cam ring is movable against a resultant force of the urging forces of the first and second urging members, and where the cam ring is not movable only against the urging force of the first urging member.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: April 14, 2015
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Hideaki Ohnishi, Koji Saga, Yasushi Watanabe
  • Patent number: 8989906
    Abstract: 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 fluid flow control device. A fluid flow control device, for instance a peritoneal dialysis device, is at a first height, a distal end of a fluid line is at a second height, and a valved outlet, when open, affords communication between the fluid flow control device and the distal end of the fluid line. The elevation differential is correlatable with a pressure measurable during a calibration procedure provided as a part of the methodology.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: March 24, 2015
    Assignee: DEKA Products Limited Partnership
    Inventors: Larry B. Gray, Robert J. Bryant, Jr.
  • Publication number: 20150004009
    Abstract: Methods and systems are provided for controlling operational parameters of a CO2 compression surface facility or pipeline in order to maintain a CO2 stream having impurities flowing in the pipeline in a liquid or supercritical phase. Sensors may be provided to sense whether the flow is single-phase or two-phase flow, and feedback provided to adjust the pressure and/or temperature at the pipeline inlet. The system is preferably optimized to limit power consumption and/or cost.
    Type: Application
    Filed: September 17, 2014
    Publication date: January 1, 2015
    Inventors: SANDEEP VERMA, CHARLES S. OAKES, TERIZHANDUR S. RAMAKRISHNAN
  • Patent number: 8911216
    Abstract: 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 variable displacement hydraulic pump is determined using a nonlinear control law to limit the total pump torque load of the variable displacement hydraulic pumps on the engine. The value of the actual pump displacement of each variable displacement hydraulic pump is controlled based upon the respective determined pump displacement limit.
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: December 16, 2014
    Assignee: Caterpillar Inc.
    Inventors: Hongliu Du, Patrick W. Sullivan
  • Publication number: 20140334946
    Abstract: A method for detecting a leakage in a fuel tank system includes setting a first reference pressure value and generating an initial pressure in the fuel tank system, as well as determining a pressure difference between the pressure in the fuel tank system and the first reference pressure. The method also includes determining a linearity metric by comparing the determined pressure difference to at least one out of a linear and a non-linear data model, the linearity metric quantifying the non-linearity of said pressure difference as a function of time, and detecting a leakage in the fuel tank system based on the linearity metric, where a non-linear pressure difference function of time is indicative of a leakage in the fuel tank system.
    Type: Application
    Filed: May 8, 2013
    Publication date: November 13, 2014
    Applicant: VOLVO CAR CORPORATION
    Inventors: Joakim Larvall, Magnus Forsberg
  • Publication number: 20140322032
    Abstract: 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 compensate or account for a pressure drift which may occur in a chamber of the pumping apparatus. More specifically, a dispense motor may be controlled to substantially maintain a baseline pressure in the dispense chamber before a dispense based on a pressure sensed in the dispense chamber. In one embodiment, before a dispense is initiated a control loop may be utilized such that it is repeatedly determined if the pressure in the dispense chamber is above a desired pressure and, if so, the movement of the pumping means regulated to maintain substantially the desired pressure in the dispense chamber until a dispense of fluid is initiated.
    Type: Application
    Filed: July 11, 2014
    Publication date: October 30, 2014
    Inventors: James Cedrone, George L. Gonnella
  • Patent number: 8870548
    Abstract: 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 compensate or account for a pressure drift which may occur in a chamber of the pumping apparatus. More specifically, a dispense motor may be controlled to substantially maintain a baseline pressure in the dispense chamber before a dispense based on a pressure sensed in the dispense chamber. In one embodiment, before a dispense is initiated a control loop may be utilized such that it is repeatedly determined if the pressure in the dispense chamber is above a desired pressure and, if so, the movement of the pumping means regulated to maintain substantially the desired pressure in the dispense chamber until a dispense of fluid is initiated.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: October 28, 2014
    Assignee: Entegris, Inc.
    Inventors: James Cedrone, George L. Gonnella
  • Publication number: 20140294607
    Abstract: An operation of a liquid transporting apparatus is controlled by communication using a controller, and the power consumption during communication standby is reduced. The liquid transporting apparatus includes a liquid storage section that stores a liquid; a body section that is connected to the liquid storage section when transporting the liquid; a body control section that controls an operation of a driving section having at least a part of function for transporting the liquid. The body control section determines whether the body section and the liquid storage section are connected. If it is determined that the body section and the liquid storage section are connected, the communication between the body control section and an external control section that performs instruction to control the operation of the driving section starts.
    Type: Application
    Filed: April 1, 2014
    Publication date: October 2, 2014
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Hajime MIYAZAKI
  • Publication number: 20140294610
    Abstract: A peristaltic pump (1) for pumping a liquid comprises a flexible tube (2) for guiding the liquid to be pumped, a compression means (5) being actuatable for compressing the flexible tube (2), an upstream valve means (3) arranged in an upstream direction with respect to the compression means (5) and being actuatable to selectively open or close the flexible tube (2) upstream of the compression means (5), and a downstream valve means (4) arranged in a down-stream direction with respect to the compression means (5) and being actuatable to selectively open or close the flexible tube (2) downstream of the compression means (5). A drive shaft (6) is provided which is rotatable for periodically actuating the compression means (5), the upstream valve means (3) and the downstream valve means (4).
    Type: Application
    Filed: October 16, 2012
    Publication date: October 2, 2014
    Inventors: Sebastien Labarthe, Jean-Baptiste Berthier
  • Publication number: 20140294606
    Abstract: An Automatic Fuel Additive Controller and Dispenser has been disclosed. In one implementation a pump is used to purge a hydrostatic sensing tube of liquid prior to measurement.
    Type: Application
    Filed: March 27, 2014
    Publication date: October 2, 2014
    Inventor: Perry Anderson
  • Patent number: 8834132
    Abstract: 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 communicated with a supply section through which oil is supplied to each of slide sections of an internal combustion engine, a branch passage branched from the main passage section to supply oil to a hydraulic pressure actuator, and a control valve having a valve body which is moved in accordance with a pressure of an upstream side thereof, and a variable capacitance pump configured to drain oil to the introduction section, the variable capacitance pump is configured to vary a drained flow quantity in accordance with the drained pressure of oil and a pressure under which the oil drained flow quantity is started to be varied is higher than a pressure under which the valve body is started to move.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: September 16, 2014
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Hiroyuki Kato, Yoshinori Ichinosawa, Yasushi Watanabe, Hideaki Ohnishi
  • Publication number: 20140255216
    Abstract: A pump system for a water supply mains has at least one pump device, a pressure detecting sensor at the pressure side of the pump device, a flow detecting sensor of the pump device, several pressure sensor units (D) remote arranged remotely from the pump device in different part regions of the mains, and a pump control device. The control device includes a model formation module designed in each case to produce a model (A) representing pressure loss from the pressure sensor to the position of the respective pressure sensor unit (D), based on several pressure measured values of at least two pressure sensor units (D) for the at least two associated part regions. The control device is designed for regulation of the pump device based on produced models (A), as well as to a corresponding method for regulation of a pump device in a water supply mains.
    Type: Application
    Filed: March 10, 2014
    Publication date: September 11, 2014
    Applicant: GRUNDFOS HOLDING A/S
    Inventors: Carsten Skovmose KALLESOE, Abdul-Sattar HASSAN
  • Patent number: 8826646
    Abstract: 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 a work diaphragm. A work chamber is provided for a fluid that is to be delivered via at least one fluid connection. The work chamber is capable of being increased and decreased in size by means of the movable work wall, the at least one fluid connection, and at least one mechanism for moving the work wall upon an intake stroke and a compression stroke. The at least one mechanism is embodied such that the force for moving the work wall both in the intake stroke and in the compression stroke includes a Lorentz force.
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: September 9, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Christoph Waletzek, Peter Holek, Ralph Schmidt
  • Patent number: 8814534
    Abstract: 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 setting a drive torque value and controlling the electric motor so that the electric motor outputs a drive torque according to a detection oil temperature. The controller is configured to perform rotation speed control of the electric motor so that when judging that there is a possibility that the detection oil temperature and oil temperature close to the oil pump are different at electric motor starting, the electric motor rotates at a lower rotation speed than where the electric motor rotates by the drive torque value according to the detection oil temperature before performing the electric motor control by which the electric motor outputs the drive torque according to the detection oil temperature.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: August 26, 2014
    Assignees: Jatco Ltd, Nissan Motor Co., Ltd.
    Inventor: Naoyasu Ikeda
  • Patent number: 8807957
    Abstract: 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 may detect a fluid condition in the pump by monitoring the frequency response of the pump.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: August 19, 2014
    Assignee: Little Giant Pump Company
    Inventor: Steven W. Hampton
  • Publication number: 20140219830
    Abstract: A natural gas compressor can include a pre-staging chamber that couples with a supply line to receive natural gas from the supply line. The compressor can additionally include a first-stage chamber that couples with the supply line to receive natural gas from the supply line. The first-stage chamber can additionally be coupled with the pre-staging chamber to receive from the pre-staging chamber natural gas that has been compressed by the pre-staging chamber. The compressor can also include a second-stage chamber configured to receive natural gas that has been compressed by the first-stage chamber.
    Type: Application
    Filed: February 3, 2014
    Publication date: August 7, 2014
    Applicant: GO NATURAL CNG, LLC
    Inventors: Jessie Daniel Strickland, Matthew M. Matsukawa, Richard R. Oliver
  • Patent number: 8794027
    Abstract: 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 position the at least one economizer port based on the rotating speed of the screw rotor to advance the timing of opening of the at least one economizer port. The controller controls the position of the slide member along the axis such that the slide member moves upstream toward a suction side of the compressor when the rotating speed of the screw rotor increases, and downstream toward a discharge side of the compressor when the rotating speed of the screw rotor decreases. A refrigerating apparatus includes the compressor, a condenser, a heat exchanger, an expansion unit, and an evaporator, sequentially connected, and has an economizer line.
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: August 5, 2014
    Assignee: Daikin Industries, Ltd.
    Inventors: Nozomi Gotou, Harunori Miyamura, Hideyuki Gotou
  • Publication number: 20140205471
    Abstract: Various embodiments include approaches for determining a top-dead-center (TDC) of a reciprocating compressor. In some cases, an apparatus includes: a pressure transducer configured to measure pressure fluctuations inside a compressor cylinder and convert the pressure fluctuations into an asynchronous waveform; and at least one computing device operably connected with the pressure transducer, the at least one computing device configured to: extract a data set representing piston angles over a single revolution of a piston within the compressor cylinder from the asynchronous waveform; remove data representing invalid piston angles from the data set to form a refined data set; determine an average piston angle for the single revolution from the refined data set; and adjust the refined data set to identify a top-dead-center (TDC) position of the piston within the compressor cylinder.
    Type: Application
    Filed: January 23, 2013
    Publication date: July 24, 2014
    Applicant: General Electric Company
    Inventor: Brian Francis Howard
  • Publication number: 20140178211
    Abstract: A method is provided for operating a wastewater pumping station of a wastewater pumping network. The pumping station includes a pump, that starts pumping if a level of a wastewater in a tank exceeds a first wastewater level, and the pump stops pumping if the level of the wastewater in the tank drops below a second level. The method includes determining a magnitude of a parameter (Psys, Q, n, ?P, Pelectrical, cos ?, I) expressing the load of the wastewater pumping network. If it is determined that the magnitude of the parameter has passed a specified threshold, the pump is activated to start pumping in an energy optimization mode. A control unit is also provided for the wastewater pumping station of the wastewater pumping network, and a system is provided for centrally controlling a plurality of pumps of wastewater pumping stations in a wastewater pumping network.
    Type: Application
    Filed: December 19, 2013
    Publication date: June 26, 2014
    Applicant: GRUNDFOS HOLDING A/S
    Inventors: Peter Jungklas NYBO, Carsten Skovmose Kallesøe, Klaus Grønnegård LAURIDSEN
  • Patent number: 8734122
    Abstract: 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 first transition from operating an oil pump of an engine in one of a first pressure mode and a second pressure mode to operating the oil pump in another one of the first pressure mode and the second pressure mode. The second pressure mode is different from the first pressure mode. The diagnostic module, based on when a driver starts the engine, selectively generates a second mode request signal to initiate consecutive transitions from operating the oil pump in the second pressure mode to operating the oil pump in the first pressure mode. The diagnostic module diagnoses a pump fault when a first oil pressure change associated with the consecutive transitions is less than a first predetermined pressure change.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: May 27, 2014
    Inventors: Lawrence O. Murray, David R. Staley, Kevin J. Storch, Colin S. Yager, Morena Bruno
  • Patent number: 8738241
    Abstract: 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 combustion engine and the ground engaging elements. The drivetrain includes a torque converter having a locked configuration and an unlocked configuration. The machine also includes a plurality of pumps driven by the internal combustion engine. An electronic control is in communication with the internal combustion engine, the torque converter, and the plurality of pumps.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: May 27, 2014
    Assignee: Caterpillar Inc.
    Inventors: Michael Evan Hague, Sameer Marathe, Zhiyong Wei, Matthew Stephen Marquette
  • Publication number: 20140134004
    Abstract: A control device for an electrical vacuum pump includes: a determination unit designed for the purpose of detecting an operating parameter of the electrical vacuum pump, which is dependent on an operating duration of the electrical vacuum pump, and detecting a controlled variable for the electrical vacuum pump, a switching unit designed for the purpose of activating or deactivating the electrical vacuum pump as a function of a comparison of the controlled variable to at least one setpoint value, and a regulating unit designed for the purpose of changing the at least one setpoint value of the controlled variable as a function of the operating parameter.
    Type: Application
    Filed: May 14, 2012
    Publication date: May 15, 2014
    Inventor: Thomas Bruex
  • Patent number: 8690557
    Abstract: 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 width of the cam ring, and a part is positioned in a circumferential region between the suction port and the discharge port, and arranged to receive a hydraulic pressure larger than a suction pressure; and a housing side high pressure introduction groove formed in the second housing or in the cam ring, formed so that an entire is positioned within the radial width of the cam ring, that a radial center is positioned radially outside the radial center of the plate side high pressure introduction groove, and that a part is overlapped with the plate side high pressure introduction groove in the circumferential direction, and arranged to receive the hydraulic pressure larger than the suction pressure.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: April 8, 2014
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventor: Makoto Tada
  • Patent number: 8672647
    Abstract: 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 the orbiting scroll orbit the fixed scroll, a compressing path from a suction port to a discharge port, and a portion for injecting water into the compressing path. The operation is controlled by a switching operation in which water is injected into the compressing path and then no water is injected. Corrosion, failure of activation, and concerns about wrap contact when water is injected into an air end are avoided by switching the operation with water injection and the operation without water injection so as to prevent water from remaining in the air end.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: March 18, 2014
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Natsuki Kawabata, Kazuaki Shiinoki, Hirotaka Kameya, Masakazu Aoki
  • Publication number: 20140069092
    Abstract: A hydraulic pump control circuit may include a pressure reducing valve selectively operable to limit the amount of fluid pressure available to an actuator operably coupled to a pump displacement volume adjusting mechanism of a variable displacement pump. The pump may be hydraulically coupled to a motor configured to provide a torque output. The reduced pressure to the actuator limits actuator travel, thereby limiting pump displacement. Accordingly, torque output of the motor may be reduced, thereby improving traction control.
    Type: Application
    Filed: September 7, 2012
    Publication date: March 13, 2014
    Applicant: CATERPILLAR, INC.
    Inventors: Christopher Mark Elliott, William Christopher Swick, Jeremy T. Peterson, Paul A. Dvorak
  • Patent number: 8622713
    Abstract: 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 may detect a fluid condition in the pump by monitoring the frequency response of the pump.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: January 7, 2014
    Assignee: Little Giant Pump Company
    Inventor: Steven W. Hampton
  • Publication number: 20130336809
    Abstract: The driving device 1, in accordance with the invention, has a ram 3, which, driven by compressed air, drives in the fastener 2. A pump device 5 produces the compressed air. The pump device 5 has a pump cylinder 23, a pump piston 22, and an annular magnet arrangement 28, 46 around the pump cylinder 23. The pump piston 22 can move in the pump cylinder 23, along an axis 11. An axial closure 25 of the pump cylinder 23 closes off, with the pump piston 22, a pump volume 27 within the pump cylinder 23. The annular magnet arrangement 28, 46 has a magnetic coil 28, which encloses the pump cylinder 23 and which overlaps, along the axis 11, at least in part, with the magnetizable closure 25 and, in part, with the magnetizable pump piston 22.
    Type: Application
    Filed: June 14, 2013
    Publication date: December 19, 2013
    Inventors: Chafic Abu Antoun, Peter Bruggmueller
  • Patent number: 8608452
    Abstract: 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 shaft an impeller is fastened which has vanes projecting into an inlet chamber and which is firmly connected via axial bridges to a cover disc. Through rotation of the impeller together with the cover disc, water can be sucked into the inlet chamber via an inlet connection piece of the pump housing and conveyed by the vanes into an annular passage of the pump housing. A guide disc with a contour corresponding to the impeller is further arranged between impeller and cover disc. The guide disc is guided by the axial bridges and can be displaced axially via a positioning unit by a piston located inside the hollow shaft.
    Type: Grant
    Filed: August 10, 2009
    Date of Patent: December 17, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Alexander Draheim, Andreas Nendel, Eduard Golovatai-Schmidt, Jens Schaefer, Sandra Schaefer
  • Publication number: 20130312452
    Abstract: An apparatus (20) has a compressor (22), heat rejection heat exchanger (30), heat absorption heat exchanger (60), and expansion-compression device (40; 200). The expansion-compression device couples the heat absorption heat exchanger to the heat rejection heat exchanger and to the compressor. The expansion-compression device comprises first (80A), second (80B), third (80C), and fourth (80D) variable volume chambers and a pivoting member. The pivoting member (98) is mounted for reciprocal rotation in opposite first and second directions about an initial orientation and is coupled to the chambers so that: rotation from the initial orientation in the first direction expands the first and third chambers and compresses the second and fourth chambers; and rotation from the initial orientation in the first direction compresses the first and third chambers and expands the second and fourth chambers.
    Type: Application
    Filed: January 23, 2012
    Publication date: November 28, 2013
    Applicant: CARRIER CORPORATION
    Inventor: David W. Gerlach
  • Patent number: 8585376
    Abstract: 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 supply line 24 for supplying water to a water feeder 23 connected to an air suction line 2. The water supply line 24 is provided with a control valve 27 that can control a flow rate of the water. A controller 28 conducts driving control of the control valve 27 in a 5×10?5 to 40×10?5 range of an injected-water volume ratio (more specifically, a volume ratio between an intake air flow rate and injected-water flow rate in the water feeder 23 of the suction line 2) and at the same time, in an injected-water volume ratio range of the compressor characterized so that an increase rate of overall adiabatic efficiency of the compressor per 1×10?5 increase rate of the injected-water volume ratio stays less than 2% of an original or initial value.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: November 19, 2013
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Hirotaka Kameya, Kazuaki Shiinoki, Natsuki Kawabata, Hirokatsu Kohsokabe
  • Patent number: 8589038
    Abstract: 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 controller detects non-operated states of all hydraulic actuators such as an arm cylinder arranged on a hydraulic excavator based on a lock detection signal from a gate lock detection switch, and also an attitude of a front working mechanism. The attitude is proper from the standpoint of safety. The detection is based on an arm angle signal from an arm angle sensor, a bucket angle signal from a bucket angle sensor and a boom pressure signal from a boom pressure sensor. Taking the detection of the non-operated states and proper attitude as conditions, the controller outputs control signals to a boosting proportional solenoid valve and flow-rate controlling, proportional solenoid valve to make a forced regenerator conduct forced regeneration.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: November 19, 2013
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Naoki Hagiwara, Tsuyoshi Nakamura, Kensuke Sato, Yasuo Okano, Kouji Ishikawa, Masanori Ezawa
  • Publication number: 20130294934
    Abstract: Systems and methods of the invention relate to diagnosing a compressor. A method may include monitoring a pressure of compressed air within a reservoir, actuating a piston within a cylinder of the compressor, and detecting a leak condition of an exhaust valve of the cylinder through recognition of a change in the monitored pressure of the compressed air within the reservoir during a time period in which the piston is actuated. A system is also disclosed including an engine, a compressor operatively connected to the engine, and a controller that is operable to determine a condition of the compressor.
    Type: Application
    Filed: April 19, 2013
    Publication date: November 7, 2013
    Inventors: BRET DWAYNE WORDEN, RICHARD C. PEOPLES, DAVID E. PETERSON, JASON M. STRODE, NEIL W. BURKELL, MILAN KARUNARATNE
  • Patent number: 8562307
    Abstract: 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 units. Electrical regulators are disposed for the pump units. In each of the electrical regulators, a solenoid proportional valve changes a supply status of driving oil. A pilot piston activates a servo switching valve in accordance with a supply status of the supplied driving oil, and controls a supply status of mechanism driving oil supplied to a servo mechanism. Servo mechanisms change the capacities of the pump units in accordance with the supply status. In the electrical regulators, a driving oil passage connects the input port to an inter-pump passage.
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: October 22, 2013
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Hirobumi Shimazaki, Ryosuke Kusumoto
  • Patent number: 8550796
    Abstract: 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), which is housed within an axial cavity (25) of the external gear (2) and meshes with the latter. The external gear (2) is associated with a translating mechanism (8, 22), arranged to cause an axial sliding thereof relative to the internal gear (4) in order to vary the capacity and the fluid flow rate of the machine. The translating mechanism (8, 22) defines a first capacity, adjustment space (24) in communication with a high pressure chamber (48) of the machine, and a second capacity adjustment space (15) where pressure conditions exist that are dependent on the operating conditions of an element, different from the high pressure chamber (48), of a fluidic circuit in which the machine (1) is connected.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: October 8, 2013
    Assignee: VHIT S.p.A.
    Inventors: Armando Codeca, Matteo Cortesi, Franco Fermini
  • Publication number: 20130243616
    Abstract: A liquid circulating device includes a pump chamber whose volume is changed by a volume changing unit; an inlet channel that is an inflow passage of the liquid to the pump chamber; a liquid resistance element; an outlet channel; a circulation channel of a length L through which the liquid circulates from the outlet channel to the inlet channel; and a pressure regulating mechanism that contains the liquid of a volume Vb during the non-operation of the volume changing unit and supplies the contained liquid as part of the circulating liquid during the operation of the volume changing unit. When the compliance of the circulation channel is defined as Cs, and the pressure of the liquid in the circulation channel at the position of a length x from the outlet channel during the operation of the volume changing unit is defined as P(x), the volume Vb satisfies a predetermined relationship.
    Type: Application
    Filed: March 7, 2013
    Publication date: September 19, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takeshi SETO, Atsushi OSHIMA, Takahiro MATSUZAKI, Kazuaki UCHIDA, Atsuya HIRABAYASHI
  • Patent number: 8523536
    Abstract: 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 reciprocates in the axial direction of the drive shaft; and a cam device that rotates integrally with the drive shaft and has: a fixed cam member that has a cam surface capable of coming into contact with a cam follower coupled to the piston and is capable of rotating integrally with the drive shaft, with movement of the fixed cam member in the axial direction being restricted; and a movable cam member that has a cam surface capable of coming into contact with the cam follower and is capable of rotating integrally with the drive shaft, with movement of the movable cam member in the axial direction being allowed, irregularity differences in the axial direction of the cam surface of the fixed cam member and the movable cam member being different from each other.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: September 3, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shinya Kuwabara, Tadashi Fujiyoshi, Hiroyuki Shiori
  • Patent number: 8517012
    Abstract: 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 desired pressure and flow characteristics. Thus, the multiple stage blower can provide faster pressure response and desired flow characteristics over a narrower range of motor speeds, resulting in greater reliability and less acoustic noise.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: August 27, 2013
    Assignee: ResMed Limited
    Inventors: Geoffrey Daniel Daly, Alexander Virr, Stephen Anthony Lea, Dion Charles Chewe Martin, Nicholas Jerome Reed, Larry Puckeridge, Timothy Tsun-Fai Fu
  • Publication number: 20130216399
    Abstract: A system and method to amplify displacement includes a housing forming a cylindrical chamber having an elastomeric material disposed therein. The chamber being sealed with a first membrane and a second membrane. The first membrane being attached to a first end having and the second membrane being attached to a second end, the first end having a greater diameter than the second end. The method including producing an input displacement with a driver attached to the first membrane, which in turn results in an amplified output displacement at the second end.
    Type: Application
    Filed: June 13, 2011
    Publication date: August 22, 2013
    Applicant: BELL HELICOPTER TEXTRON INC.
    Inventors: Troy C. Schank, Frank B. Stamps
  • Publication number: 20130216402
    Abstract: A water pump includes a base, a cam, a joint, and a piston. The base includes a PTO-attachment portion, a cam-attachment portion, a first contact surface, and a second contact surface. The cam includes a central opening, a first cam contact surface, and a second cam contact surface, wherein the cam-attachment portion of the base extends into the central opening. The joint pivotally couples the cam to the cam-attachment portion of the base. In a first operating position of the cam, the first contact surface engages the first cam contact surface so that the cam is positioned at a first angle relative to the axis of PTO rotation. In a second operating position of the cam, the second contact surface engages the second cam contact surface so that the cam is positioned at a second angle, greater than the first angle, relative to the axis of PTO rotation.
    Type: Application
    Filed: June 14, 2012
    Publication date: August 22, 2013
    Inventors: Jason J. Raasch, Richard J. Gilpatrick