Pump Operated As Motor To Start Prime Mover Drive Patents (Class 417/324)
  • Patent number: 10457401
    Abstract: A dual-use air turbine system for a gas turbine engine of an aircraft is provided. The dual-use air turbine system includes a variable area air turbine mechanically linked to a spool of the gas turbine engine through a multi-speed gear set. The dual-use air turbine system also includes a plurality of valves in pneumatic ducting operable to direct an engine start air flow through an inlet of the variable area air turbine and drive rotation of the spool during an engine start mode of operation. The valves are further operable to direct an engine bleed air flow from a compressor section of the gas turbine engine through the inlet of the variable area air turbine and drive rotation of the spool during an environmental control system active mode of operation.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: October 29, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventor: Matthew R. Feulner
  • Patent number: 10280937
    Abstract: A vacuum pump component includes a stationary disk that is formed with a spiral groove (helical groove) having a ridge portion and a valley part and has a projecting (protruding) portion on both or either one of an inner-diameter portion of the disk which faces a rotary cylinder (rotator cylinder-shaped portion) and an inner-diameter side of a stationary cylinder disposed on an outer peripheral side of the stationary disk. A second vacuum pump component includes rotary disk formed with a spiral groove having a ridge portion and a valley part and having a projecting (protruding) portion on both or either one of an outer-diameter portion of a rotary cylinder disposed on an inner peripheral side of the rotary disk and an outer-diameter portion of the rotary disk which faces a spacer.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: May 7, 2019
    Assignee: Edwards Japan Limited
    Inventors: Manabu Nonaka, Takashi Kabasawa
  • Patent number: 9701414
    Abstract: A system and method are provided for controlling the movement of an aircraft engine cowl door between an open position and a closed position. The system includes an electric motor, at least one actuator, and an electrically operated brake. The actuator is coupled to the motor and is operable to move the cowl door between the closed and the open position. The electrically operated brake is coupled to the electric motor and the at least one actuator and is configured, upon being energized, to supply a unidirectional resisting torque load to the electric motor that does not prevent motor rotation.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: July 11, 2017
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Ron Vaughan, Leroy Allen Fizer, James Wawrzynek, Kevin K. Chakkera, Mohamed A. Salam, William Warr, Stephen Birn
  • Patent number: 9664168
    Abstract: A hydrostatic power unit (2) comprises a variable displacement machine with a continuously variable displacement volume and is operated as a pump and motor and is in a drive connection with an internal combustion engine (3). When operated as a pump, the power unit sucks hydraulic fluid out of a tank (9) and delivers into a delivery side (P), and, when operated as a motor, functions as a hydraulic starter to start the internal combustion engine (3). When operated as a motor, the power unit is supplied with hydraulic fluid from a hydraulic accumulator (30). The displacement volume of the power unit (2) is set by a displacement volume control device (60) actuated by a positioning piston device (61) supplied with hydraulic fluid from a charging pressure circuit (23). The power unit (2) includes a supplemental positioning piston device (80) in an operative connection with the displacement volume control device (60) and which is actuated directly by the pressure present in the hydraulic accumulator (30).
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: May 30, 2017
    Assignee: Linde Hydraulics GmbH & Co. KG
    Inventors: Lukas Krittian, Thomas Loeffler, Alfred Langen, Rolf Lasaar
  • Patent number: 9429129
    Abstract: A variable displacement hydrostatic power unit (7) is connected with an internal combustion engine (2). The power unit (7) operates as a pump to deliver hydraulic fluid to at least one consumer (V) and operates as a motor as a hydraulic starter for the internal combustion engine (2). Hydraulic fluid from a hydraulic accumulator (25) is supplied to the power unit (7) operated as a motor. The power unit (7) includes a spring device (55) which, when the internal combustion engine (2) is shut off, actuates a displacement volume control device (50) into a position with the maximum displacement volume. When the power unit (7) is actuated with hydraulic fluid from the hydraulic accumulator (25), the internal combustion engine (7) is immediately started by the power unit (7) without the need for an immediately preceding adjustment of the displacement volume control device (50) of the power unit (7).
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: August 30, 2016
    Assignee: Linde Hydraulics GmbH & Co. KG
    Inventors: Lukas Krittian, Martin Steigerwald, Martin Oberhausser, Alfred Langen
  • Patent number: 8172515
    Abstract: A turbo vacuum pump comprising a suction part 23A that sucks gas in an axial direction; a discharge part 50 that discharges the gas sucked by the suction part 23A, the discharge part 50 having a plurality of rotating impellers 70, 80 and a stationary impeller 71 arranged so as to be opposed to each of the plurality of rotating impellers 70, 80; and a rotating shaft 21 that rotates the plurality of rotating impellers 70, 80, wherein the plurality of rotating impellers 70, 80 include at least one stage of a first turbine impeller 70 for discharging the sucked gas in the axial direction, the first turbine impeller 70 being fixed to a suction-part-side end face 15 of the rotating shaft 21, and at least one stage of a second turbine impeller 80 fixed to the rotating shaft 21 that extends through the second turbine impeller 80, the second turbine impeller 80 being arranged downstream of the first turbine impeller 70.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: May 8, 2012
    Assignee: Ebara Corporation
    Inventors: Hiroyasu Kawashima, Shinichi Sekiguchi
  • Patent number: 8066495
    Abstract: A turbo vacuum pump is suitable for evacuating a corrosive process gas or evacuating a gas containing reaction products. The turbo vacuum pump includes a casing having an intake port, a pump section comprising rotor blades and stator blades housed in the casing, bearings for supporting the rotor blades, a motor for rotating the rotor blades; and a rotating shaft comprising a first rotating shaft to which the rotor blades are attached, and a second rotating shaft to which a motor rotor of the motor is attached.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: November 29, 2011
    Assignee: Ebara Corporation
    Inventors: Shinichi Sekiguchi, Hiroaki Ogamino, Hiroyasu Kawashima
  • Patent number: 7717684
    Abstract: A turbo vacuum pump is suitable for evacuating a corrosive process gas or evacuating a gas containing reaction products. The turbo vacuum pump includes a casing having an intake port, a pump section comprising rotor blades and stator blades housed in the casing, bearings for supporting the rotor blades, a motor for rotating the rotor blades; and a rotating shaft comprising a first rotating shaft to which the rotor blades are attached, and a second rotating shaft to which a motor rotor of the motor is attached.
    Type: Grant
    Filed: August 19, 2004
    Date of Patent: May 18, 2010
    Assignee: Ebara Corporation
    Inventors: Shinichi Sekiguchi, Hiroaki Ogamino, Hiroyasu Kawashima
  • Patent number: 6293765
    Abstract: A tandem fixed displacement pump circuit with torque control includes first and second pumps that draw fluid from a reservoir to supply respective load circuits, pressure relief valves for each of the load circuits, and a pilot operated sequence valve that monitors the pressure for each of the circuits and reduces the pressure of one of the circuits as the pressure in the other circuit rises. The sequence valve modulates to control the pressure in the secondary priority circuit so that a predetermined input torque value is not exceeded.
    Type: Grant
    Filed: May 8, 2000
    Date of Patent: September 25, 2001
    Assignee: Sauer-Danfoss Inc.
    Inventor: Mark A. Peterson
  • Patent number: 5482445
    Abstract: A free piston engine having a fluid pressure unit which includes a cylinder and a piston arranged within the cylinder and reciprocating therein between the bottom dead center and the top dead center. The piston includes a plunger-shaped piston extension cooperating with the fluid pressure unit. This fluid pressure unit is equipped with an auxiliary member for moving the piston in a direction to its bottom dead center. This auxiliary member includes a connecting channel adapted to communicate a liquid pressure source with a room in which the plunger-shaped piston extension extends and which room is closed on one side by an axial face of the piston extension which is directed such that, by pressure loading the axial face, the piston is moved towards the bottom dead center. The axial face is formed on a ring slidably arranged on the plunger-shaped extension. The plunger-shaped extension includes a stop adapted for engagement by the ring when it is moved for displacing the piston to its bottom dead center.
    Type: Grant
    Filed: May 18, 1994
    Date of Patent: January 9, 1996
    Assignee: Innas Free Piston B.V.
    Inventors: Peter A. J. Achten, Theodorus G. Potma
  • Patent number: 4413486
    Abstract: A fluid pressure device of the type having reciprocating pistons disposed in associated cylinders formed in an engine block that rotates conjointly with a drive shaft mounted eccentrically to the spin axis of the engine block. The length of the piston strokes is determined by the offset distance between the spin axis of the engine block and the spin axis of the drive shaft, said respective axes being parallel to one another.At least two axially spaced banks of radially disposed pistons and complementally formed cylinders are provided, and base plate means serve to rigidly interconnect axially adjacent pistons of the respective banks. Axially spaced bridle rings retain the opposed ends of the base plates and serve to rigidly interconnect diametrically opposed pairs of pistons.Openings formed in a stationary cylindrical housing transiently align with the rotating cylinders to provide the valving means for the device.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: November 8, 1983
    Inventor: Everett F. Irwin
  • Patent number: 4382748
    Abstract: A free piston engine pump (FPEP) converts combustion energy into hydraulic power in an efficient, controlled and relatively uncomplicated manner, for example, for vehicle propulsion, auxiliary system power, etc. The FPEP is substantially naturally mass balanced having opposed engine pistons driving respective in-line hydraulic pumps. An adjustable accumulator with a deformable fluid-tight chamber containing a compressible fluid stores and delivers energy for compression, and an arrangement of control valves and check valves enables selective operation of the FPEP in primary (high flow) and secondary (high pressure) modes. Plural FPEP's may be interfaced for parallel operation sharing common elements and functions. Cycle rate, intermittent operation and start-up also may be controlled. Electronic monitoring and control of one or more operational parameters of a FPEP also are disclosed.
    Type: Grant
    Filed: November 3, 1980
    Date of Patent: May 10, 1983
    Assignee: Pneumo Corporation
    Inventor: Robert D. Vanderlaan
  • Patent number: 4307999
    Abstract: In a free piston engine pump means are provided for obtaining a variable energy rate output and for controlling acceleration and deceleration of the piston masses. In particular a second high output work rate phase is obtained at the end of the power stroke helping to decelerate the piston masses, and a high input work rate phase is provided at the beginning of the return compression stroke to accelerate the piston masses while maintaining the total input energy of the return stroke relatively constant from cycle to cycle and substantially independent of the total output energy of the power stroke.
    Type: Grant
    Filed: June 25, 1979
    Date of Patent: December 29, 1981
    Assignee: Pneumo Corporation
    Inventor: Robert D. Vanderlaan
  • Patent number: 4297844
    Abstract: Device for hydraulic control of thrust reversal units activated by jacks in jet engine. The jacks are connected to a rotary hydraulic engine fed by a hydraulic circuit which involves a mechanism for slowing down the speed of the reversal units when they approach the stop units. The hydraulic circuit allows for directly subjecting the engine's capacity to the opposing load on the engine. Application of this invention is possible to a dual flow turbojet in which the reversal units rotate in the cold flow.
    Type: Grant
    Filed: July 25, 1979
    Date of Patent: November 3, 1981
    Assignee: Societe Nationale d'etude et de Construction de Moteurs d'Aviation
    Inventors: Yves R. Halin, Jacques R. A. LeLandais
  • Patent number: 4087205
    Abstract: A hybrid propulsion system, particularly for a vehicle, having a free piston type engine-pump unit connected to a working fluid circuit for controlling pressurization of a working fluid, which fluid in turn drives a hydraulic motor interconnected to the vehicle wheels. The motor-pump unit includes a free piston assembly having a pair of fixedly connected power pistons, each of which has a pump piston fixed thereto. The fluid system includes high and low pressure accumulators in communication with pumping chambers associated with the pump pistons. The power pistons are used for driving the pump pistons to pressurize the working fluid when self-sustained operation of the engine-pump unit is desired. However, the flow of working fluid to the pumping chambers can be reversed during startup of the engine so that the high pressure fluid is used for driving the free piston assembly until same is reciprocated at a rate rapidly enough to permit self-sustained reciprocation thereof.
    Type: Grant
    Filed: August 1, 1975
    Date of Patent: May 2, 1978
    Inventor: Richard P. Heintz