Condition Responsive Control Of Drive Transmission Or Pump Displacement Patents (Class 417/212)
  • Patent number: 11603203
    Abstract: The present invention includes a distributed propulsion system for a craft that comprises a frame, a plurality of hydraulic or electric motors disposed within or attached to the frame in a distributed configuration; a propeller operably connected to each of the hydraulic or electric motors, a source of hydraulic or electric power disposed within or attached to the frame and coupled to each of the disposed within or attached to the frame, wherein the source of hydraulic or electric power provides sufficient energy density for the craft to attain and maintain operations of the craft, a controller coupled to each of the hydraulic or electric motors, and one or more processors communicably coupled to each controller that control an operation and speed of the plurality of hydraulic or electric motors.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: March 14, 2023
    Assignee: TEXTRON INNOVATIONS INC.
    Inventors: Carlos Alexander Fenny, Rohn Lee Olson
  • Patent number: 11498548
    Abstract: Embodiments of an intelligent hybrid powertrain system include an engine, a controller architecture, and an electric drive subsystem having a battery supply and a motor/generator. The controller architecture is configured to: (i) monitor a current state of charge (SoC) of the battery supply when the combine harvester engages in a combine harvest cycle having a tank fill phase and a tank unload phase; (ii) during the tank fill phase, operate the motor/generator to supplement the engine power output and regulate a rate of battery discharge to prevent the current SoC of the battery supply from decreasing below a lower predetermined SoC threshold prior to completion of the tank fill phase; and (iii) during the tank unload phase, operate the motor/generator to charge the battery supply until the current SoC of the battery supply is equal to or greater than a first upper predetermined SoC threshold.
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: November 15, 2022
    Assignee: DEERE & COMPANY
    Inventors: Alan D. Sheidler, Padmakar Surwade, Bhupesh Agrawal
  • Patent number: 11459731
    Abstract: A working machine includes a switching valve to switch between a first state and a second state, the first state allowing a revolving speed of a traveling motor to be a first speed, the second state allowing the revolving speed of the traveling motor to be a second speed, and a controller device to reduce the revolving speed of the prime mover in either acceleration to switch from the first state to the second state or deceleration to switch from the second state to the first state. The controller device associates a return timing with a switch timing in either the acceleration or deceleration, the return timing allowing an actual revolving speed of a prime mover to start returning toward a first target revolving speed after the actual revolving speed is reduced, the switch timing allowing the switching valve to switch to either an acceleration side or a deceleration side.
    Type: Grant
    Filed: October 22, 2020
    Date of Patent: October 4, 2022
    Assignee: KUBOTA CORPORATION
    Inventors: Yuji Fukuda, Ryota Hamamoto, Jun Tomita
  • Patent number: 11370405
    Abstract: Various embodiments of a method and apparatus for an air charging system controller for an air braked vehicle are disclosed. The air charging system controller comprises an input for receiving conditions of the vehicle, an output for controlling a compressor in a normal mode and in a high demand mode and control logic. The control logic determines whether the vehicle meets a predetermined condition and controls the compressor in the high demand mode in response to the vehicle meeting the predetermined condition.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: June 28, 2022
    Assignee: Bendix Commercial Vehicle Systems LLC
    Inventors: Royal Ricky Rodrigues, David J. Pfefferl, Thomas S. Miller, Jr.
  • Patent number: 11137330
    Abstract: An object is displaced alternately in opposite directions, using a hydraulic power unit having a rotatable body which includes the shaft of a hydraulic machine having electronically commutated valves. A motor drives the rotatable body. The hydraulic machine drives an actuator to displace the object in use. Energy is transformed from rotational kinetic energy of the rotatable body to elastic strain energy or elastic strain and gravitational potential energy of the object during a pumping phase and rotation of the rotatable body slows, but does not change direction. The potential energy then drives the hydraulic machine to motor and the rotatable shaft speeds up again, storing rotational kinetic energy. The displacement of the hydraulic machine is controlled throughout to match a time varying demand taking into account the varying speed of rotation of the rotatable shaft. The motor provides energy to compensate for losses and the process can repeat cyclically.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: October 5, 2021
    Assignee: ARTEMIS INTELLIGENT POWER LIMITED
    Inventors: William Hugh Salvin Rampen, Niall Caldwell, Peter Mccurry
  • Patent number: 10968919
    Abstract: A compressor (22) comprises: a housing (50); a shaft (70); a plurality of bearings (66, 67, 68, 74, 76) mounting the shaft to the housing for relative rotation about an axis (500); and a motor (52). The motor has: a rotor (64) mounted on the shaft; and a stator (62). A first impeller (54A) is mounted the shaft to a first side of the motor. A second impeller (54B) is mounted the shaft to a second side of the motor. The first impeller is an open impeller and the second impeller is a shrouded impeller.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: April 6, 2021
    Assignee: Carrier Corporation
    Inventor: Vishnu M. Sishtla
  • Patent number: 10718194
    Abstract: The present invention provides a method and system for providing on-site electrical power to a fracturing operation, and an electrically powered fracturing system. Natural gas can be used to drive a turbine generator in the production of electrical power. A scalable, electrically powered fracturing fleet is provided to pump fluids for the fracturing operation, obviating the need for a constant supply of diesel fuel to the site and reducing the site footprint and infrastructure required for the fracturing operation, when compared with conventional systems.
    Type: Grant
    Filed: May 27, 2019
    Date of Patent: July 21, 2020
    Assignee: TYPHON TECHNOLOGY SOLUTIONS, LLC
    Inventors: Todd Coli, Eldon Schelske
  • Patent number: 10677773
    Abstract: A device includes a main body and at least one actuating and sensing module. A length of the main body is 35˜55 mm. A width of the main body is 25˜30 mm. A height of the main body is 9˜13 mm. The actuating and sensing module is disposed in the main body. The actuating and sensing module includes a carrier, at least one sensor, at least one actuating device, a driving and transmitting controller and a battery. The sensor, the actuating device, the driving and transmitting controller and the battery are disposed on the carrier. The actuating device is disposed on one side of the sensor. The actuating device includes at least one guiding channel. The actuating device is enabled to transport fluid to flow toward the sensor through the guiding channel so as to make the fluid measured by the sensor.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: June 9, 2020
    Assignee: MICROJET TECHNOLOGY CO., LTD.
    Inventors: Hao-Jan Mou, Ching-Sung Lin, Shih-Hung Cheng, Chi-Feng Huang, Yung-Lung Han, Hsuan-Kai Chen
  • Patent number: 10578212
    Abstract: A hydrostatic traction drive for a vehicle with a hydrostat includes a hydraulic pump, a hydraulic motor, and an electronic control unit. The hydraulic pump has an adjustable stroke volume, and includes an adjustment device configured to adjust the adjustable stroke volume. The hydraulic motor is arranged with the hydraulic pump in a hydraulic circuit, in particular a closed hydraulic circuit. The electronic control unit is configured to exclusively control the hydrostat so that the traction drive is controllable without knowledge or control of specific components thereof. The electronic control unit has a defined interface configured to pass a target value for an operating parameter of the hydrostat to the electronic control unit.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: March 3, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Norman Brix, Steffen Mutschler
  • Patent number: 10570878
    Abstract: An adjusting device for an axial piston machine includes an actuating piston that delimits an actuating space configured to be connected to a control oil source or a control oil drain via a control valve. A control piston of the control valve is loaded firstly by a control spring and secondly by a spring arrangement that is also in active engagement with the actuating piston.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: February 25, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Carola Diebold, Andreas Apperger
  • Patent number: 10464098
    Abstract: A remote metering station for pumping a flow of adhesive to a dispensing module is disclosed. The remote metering station includes a manifold having a front surface, a back surface opposite to the front surface, a first side surface, a second side surface opposite the first side surface, a top surface, and a bottom surface opposite to said top surface. The remote metering station also includes a modular pump assembly removably mounted to the manifold, where the modular pump assembly includes a bottom surface, an outlet on the bottom surface, the outlet being in fluid communication with the manifold, and an inlet for receiving the adhesive. The modular pump assembly further includes a gear assembly and a drive motor coupled to the gear assembly. The gear assembly is operable for pumping the adhesive from the inlet to the outlet.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: November 5, 2019
    Assignee: Nordson Corporation
    Inventor: Joel E. Saine
  • 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: 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
  • 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
  • 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: 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
  • 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
  • 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