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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 1017. Отображено 100.
05-04-2012 дата публикации

Pendulum-slide cell pump

Номер: US20120082582A1
Автор: Christian Richter, Mark Tepler
Принадлежит: MAHLE International GmbH

A pendulum-slide cell pump may include a rotationally mounted inner rotor connected via pendulum-slides with an outer rotor and wherein the outer rotor may be configured to transfer rotational movement of the outer rotor to the inner rotor via the pendulum-slides.

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Номер записи: 1
14-06-2012 дата публикации

Lubricant pump system

Номер: US20120148423A1
Автор: Rene Wagner
Принадлежит: MAHLE International GmbH

A lubricant pump system may include a lubricant pump controlled by a proportional valve. An actuating unit may be disposed in the lubricant pump and configured to control a delivery output of the lubricant pump. A first pressure chamber and at least one second pressure chamber may be configured to adjust the actuating unit against a spring, wherein the second pressure chamber is smaller than the first pressure chamber. In response to a failure of the proportional valve, the lubricant pump may be exclusively pressurized via the at least one second pressure chamber.

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Номер записи: 2
24-01-2013 дата публикации

Unified variable displacement oil pump and vacuum pump

Номер: US20130022485A1
Автор: Dennis N. Koenig, Douglas G. Hunter
Принадлежит: SLW Automotive Inc

A unified variable displacement pump having a housing which includes a fluid pump and a vacuum pump. A portion of the housing is part of the fluid pump, and a portion of the housing is part of the vacuum pump. A shaft extends through the fluid pump and the vacuum pump. A vacuum pump rotor is formed as part of the shaft, and a vane pump rotor is mounted to the shaft such that when the shaft rotates, the vacuum pump rotor and the vane pump rotor rotate, causing the fluid pump to pump fluid and the vacuum pump to generate a vacuum. The vacuum pump and fluid pump are combined into a single component driven by a single shaft.

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Номер записи: 3
31-01-2013 дата публикации

Variable Displacement Pump

Номер: US20130028770A1
Автор: Dai Niwata, Koji Saga
Принадлежит: HITACHI AUTOMOTIVE SYSTEMS LTD

A variable displacement pump includes: side walls provided on both sides of the cam ring in an axial direction; and an introduction passage which is formed on one of the separation walls across which the hydraulic chambers pass when the hydraulic chambers are moved from the suction portion to the discharge portion, which is arranged to shut off a connection between one of the hydraulic chambers and the control hydraulic chamber by an axial end surface of the cam ring when the cam ring is in a maximum eccentric state, and which is arranged to connect the one of the hydraulic chambers and the control hydraulic chamber by a movement of the cam ring in the direction to decrease the eccentric amount of the cam ring, and thereby to introduce the discharge pressure within the control hydraulic chamber to the one of the hydraulic chambers.

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Номер записи: 4
15-08-2013 дата публикации

Oil pump

Номер: US20130209302A1
Автор: Hisashi Ono, Shinji Kazaoka
Принадлежит: Aisin Seiki Co Ltd

An oil pump includes a capacity adjustment mechanism that changes the pump capacity by moving a tubular body in a tube radial direction, with a pump chamber formed between the tubular body and an outer circumference side of a rotor, a first spring biasing the tubular body in a direction in which pump capacity increases, a control valve that converts oil pressure of the oil pump into control pressure and causes the control pressure to act on the capacity adjustment mechanism, and a second spring biasing a valve body in order to set the control pressure in the control valve. The relationship of the biasing forces of the first and second springs is set so that pump capacity is set to maximum when the engine rotational speed is less than a predetermined value, and so that pump capacity is reduced when the engine rotational speed exceeds a predetermined value.

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Номер записи: 5
07-01-2016 дата публикации

VARIABLE DISPLACEMENT LUBRICANT PUMP

Номер: US20160003243A1
Автор: CELATA BERNARDO
Принадлежит:

A variable displacement lubricant pump for providing a pressurized lubricant for an internal combustion engine includes a shiftable control ring, a hydraulic control chamber which directly actuates the control ring, a pump rotor comprising a plurality of slidable vanes which rotate in the control ring, a control chamber wall, a temperature control opening arranged in the control chamber wall, and a temperature control valve which connects or disconnects the temperature control opening to an atmospheric pressure. The temperature control valve comprises a valve plunger which is axially shiftable so as to block or leave open a lubricant passage, and a first bimetal actuator sheet which directly actuates the valve plunger. The first bimetal actuator sheet comprises a first switching temperature. The valve plunger is in an open position if a lubricant temperature exceeds the first switching temperature. 19-. (canceled)10. A variable displacement lubricant pump for providing a pressurized lubricant for an internal combustion engine , the variable displacement lubricant pump comprising:a control ring configured to be shiftable;a hydraulic control chamber configured to directly actuate the control ring;a pump rotor comprising a plurality of slidable vanes which are configured to rotate in the control ring;a control chamber wall;a temperature control opening arranged in the control chamber wall; and a valve plunger configured to be axially shiftable so as to block or leave open a lubricant passage, and', 'a first bimetal actuator sheet configured to directly actuate the valve plunger, the first bimetal actuator sheet comprising a first switching temperature,', 'wherein, the valve plunger is in an open position if a lubricant temperature exceeds the first switching temperature., 'a temperature control valve configured to connect or disconnect the temperature control opening to an atmospheric pressure, the temperature control valve comprising,'}11. The variable displacement ...

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Номер записи: 6
08-01-2015 дата публикации

Sealing Element for Rotary Compressor

Номер: US20150010421A1
Автор: Bradshaw Craig R., Orosz Joseph S., T. Kemp Gregory
Принадлежит: Torad Engineering, LLC

A sealing assembly for use in a rotary compressor having a housing and a rotor. The sealing assembly includes a sealing element and a spring positioned circumferentially around the sealing element. The sealing assembly is positioned in a slot formed in the housing, with at least one surface of the sealing element being beveled, and a cooperating mating surface of the slot being beveled. The force of the spring against the sealing element causes the sealing element to be forced into contact with at least one surface of the rotor (such as an inner surface of a rotor end plate). Alternatively, a sealing element can be provided that has elastic properties, the forces of which cause the sealing element to be forced into contact with the rotor. 1. A rotary compressor , comprising:a housing defining an internal cavity having an inner wall surface, wherein the housing has a housing longitudinal axis extending transverse to a housing plane that bisects the inner wall surface and wherein the housing further comprises a first sealing assembly;a rotor having a peripheral surface and being positioned within the internal cavity of the housing, the rotor configured to rotate about a rotor axis of rotation eccentric to the housing longitudinal axis, wherein the rotor has a first side surface and an opposed second side surface, and wherein the rotor further comprises a pair of end plates that are mounted to and rotate therewith the respective first and second side surfaces of the rotor; anda gate having a distal end, the gate being slidably mounted therewith the rotor and movable axially about and between a first position, in which the distal end of the gate is positioned at a first distance from the peripheral surface of the rotor, and a second position, in which the distal end of the gate is positioned at a second distance from the peripheral surface of the rotor, wherein the distal end of the gate is constrained to be spaced proximate from the inner wall surface of the housing as ...

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Номер записи: 7
14-01-2016 дата публикации

VARIABLE DISPLACEMENT VANE PUMP

Номер: US20160010642A1
Автор: AKATSUKA Koichiro, Fujita Tomoyuki, KATO Fumiyasu
Принадлежит: KAYABA INDUSTRY CO., LTD.

A vane pump includes a rotor, vanes, pump chambers, a suction port, and a discharge port. The side member has a first transition section and a second transition section. The first transition section is a section from an end point of the suction port to a start point of the discharge port. The second transition section is a section from an end point of the discharge port to a start point of the suction port. An angle between the start point and the end point of the suction port is set such that a pressurizing timing is offset from a depressurizing timing. The pressurizing timing is a timing at which one pump chamber starts to communicate with the discharge port from the first transition section, and the depressurizing timing is a timing at which another pump chamber starts to communicate with the suction port from the second transition section. 1. A variable displacement vane pump used as a fluid pressure source , comprising:a rotor that is configured to rotationally driven by motive power from a motive-power source;a plurality of slits radially formed so as to open to an outer circumference of the rotor;vanes slidably received in the respective slits;a cam ring having an inner circumferential cam face with which tip portions of the vanes are brought into sliding contact, the cam ring being capable of being made eccentric to a center of the rotor;a side member provided so as to be in contact with a side surface of the cam ring;pump chambers defined by the rotor, the cam ring, the side member, and the adjacent vanes;a suction port formed to have an arc shape on the side member in a region in which displacement of the pump chambers are expanded by rotation of the rotor, the suction port being configured to guide working fluid to be sucked into the pump chambers; anda discharge port formed to have an arc shape on the side member in a region in which displacement of the pump chambers are contracted by rotation of the rotor, the discharge port being configured to guide ...

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Номер записи: 8
11-01-2018 дата публикации

VARIABLE DISPLACEMENT VANE PUMP WITH THERMO-COMPENSATION

Номер: US20180010605A1
Автор: ARNOLD Manfred, KUTZER Hans Peter, VALKENBERG Ralph
Принадлежит:

A variable displacement vane pump has a control slide displaceable within its housing and a first control chamber and a second control chamber for receiving pressurized lubricant. A thermally adjustable control valve is provided in the housing for adjusting pump displacement based on a temperature of the lubricant. In addition to fluid communication channels in the control chambers, at least one vent port is provided in the second chamber. The control valve is configured to control pressure and fluid communication between the chambers along with the control slide. The control valve can help reduce pump displacement at lower temperatures and low engine speeds. At lower temperatures, the second control chamber can be pressurized by the first control chamber. At higher temperatures, the second control chamber can be vented through the control valve and/or the vent port, despite the position of the control slide. 1. A variable displacement vane pump for dispensing lubricant to a system , comprising:a housing;an inlet for inputting lubricant from a source into the housing;an outlet for delivering pressurized lubricant to the system from the housing;a control slide displaceable within the housing between a first slide position and a second slide position to adjust displacement of the pump through the outlet;a resilient structure biasing the control slide in the first slide position;a rotor with at least one vane mounted in the housing and configured for rotation within and relative to the control slide, the at least one vane configured for engagement with an inside surface of the control slide during rotation thereof;a first control chamber between the housing and the control slide and a second control chamber between the housing and the control slide for receiving pressurized lubricant;a thermally adjustable control valve comprising a thermostat, the thermostat configured to move the thermally adjustable control valve between a first valve position and a second valve ...

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Номер записи: 9
09-01-2020 дата публикации

VANE PUMP

Номер: US20200011326A1
Автор: Ima Akihiro, SAKIKAWA Shigenori, TAKANI Kunimitsu, YAMAOKA Yoshimune
Принадлежит:

The purpose of the present invention is to provide a vane pump that is able to prevent decrease of power transmission efficiency when the vane pump is used in combination with a device such as a transmission device, for example. Therefore, this vane pump () has a hollow shaft (), the hollow shaft () is configured such that a hollow portion thereof allows a rotation driving shaft (which is, for example, an input shaft of a transmission device as illustrated in , and, which also includes an input shaft which is inserted directly into the transmission device from a driving source without having a coupling interposed therebetween) of the driving source () to be inserted therethrough, and the hollow shaft () and the rotation driving shaft () are coupled by means of a mechanism (spline, key and key groove, etc.) for transmitting a torque but transmitting no thrust. 1. A vane pump comprising a hollow shaft , whereinthe hollow shaft is constructed such that a rotation driving shaft of a driving source can be inserted into a hollow portion; andthe hollow shaft and the rotation driving shaft are connected by a mechanism for transmitting a torque but transmitting no thrust.2. The vane pump according to claim 1 , whereina rotor is mounted on said hollow shaft.3. The vane pump according to claim 2 , whereinsaid hollow shaft and the rotor are mounted such that relative rotation is not possible and movement in an axial direction is limited by a wire ring; andthe wire ring is disposed in a mode across a shaft-side recess portion and a rotor-side stepped portion in a state where the shaft-side recess portion formed on said hollow shaft and the rotor-side stepped portion formed on the rotor are aligned.4. The vane pump according to claim 1 , whereina mechanical seal is provided on both end portions in the axial direction of said hollow shaft; anda circuit for allowing the mechanical seals on the both end portions to communicate is formed.5. The vane pump according to claim 1 , ...

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Номер записи: 10
21-01-2016 дата публикации

VARIABLE DISPLACEMENT VANE PUMP

Номер: US20160017884A1
Автор: AKATSUKA Koichiro, Fujita Tomoyuki, KATO Fumiyasu
Принадлежит: KAYABA INDUSTRY CO., LTD.

A variable displacement vane pump includes a rotor, vanes, a cam ring, pump chambers, a suction port, a discharge port, back pressure chambers, a plate that has a sliding contact surface and a penetrating hole, a suction-side back pressure port being configured to guide the working fluid in the suction port to the back pressure chambers in a suction section, a discharge-side back pressure port being configured to guide the working fluid that is discharged from the discharge port to the back pressure chambers in a discharge section, an additional groove provided on the sliding contact surface so as to extend from between the discharge-side back pressure port and the penetrating hole to between the suction-side back pressure port and the penetrating hole, and a connection groove that communicates the additional groove with the suction-side back pressure port.

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Номер записи: 11
17-01-2019 дата публикации

HYDRAULIC CONTROL APPARATUS AND HYDRAULIC CONTROL METHOD

Номер: US20190017596A1
Автор: FUJIKI Kenichi, Jyo Yuhki, Kaneko Ken, Kobayashi Haruyo, Kobayashi Toru, Murayama Syu, OIKAWA Naoki, SATOU Takahiro, Segawa Yoshiharu, SENBONGI Yuji, Yamanaka Kentaro
Принадлежит:

A hydraulic control apparatus is provided including: an electromagnetic valve that has an input port communicating with a supply destination unit of oil and a control port that is switched between communication and disconnection by resultant force of a hydraulic pressure of the supply destination unit and electromagnetic force; a variable displacement pump which has a suction port communicating with a supply source of the oil, an ejection port communicating with the supply destination unit, and a control chamber communicating with the control port and rotates in accordance with drive of the supply destination unit, in which an amount of the oil ejected to the supply destination unit through the ejection port changes in accordance with a pressure in the control chamber; and a control unit that controls a value of a necessary current that is caused to flow through the electromagnetic valve. 1. A hydraulic control apparatus comprising:an electromagnetic valve that has an input port communicating with a supply destination unit of oil and a control port in which a communication and a disconnection are switched by a resultant force of a hydraulic pressure of the supply destination unit and an electromagnetic force;a variable displacement pump which has a suction port communicating with a supply source of the oil, an ejection port communicating with the supply destination unit, and a control chamber communicating with the control port, rotates in accordance with a drive of the supply destination unit, and is where an amount of the oil ejected to the supply destination unit through the ejection port changes in accordance with a pressure in the control chamber; anda control unit that controls a value of a necessary current applying to the electromagnetic valve,wherein the control unit calculates a target hydraulic pressure value of the supply destination unit on the basis of a parameter indicating a state of the supply destination unit and calculates the value of the ...

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Номер записи: 12
29-01-2015 дата публикации

Crude Oil Lifting System and Method Utilizing Vane Pump for Conveying Fluid

Номер: US20150027686A1
Автор: HAO ZHONGXIAN, Jin Jingwei, Pei Xiaohan, Shen Zejun, TONG Zheng, Wang Quanbin, Wang Tongbin, Zhang Lixin
Принадлежит:

A crude oil lifting system and a method utilizing a vane pump for conveying a fluid. The crude oil lifting system comprises: an oil pipe and an oil pump connected to the oil pipe. The oil pump is the vane pump. The vane pump is provided with a cylindrical stator. The stator has arranged therein a drive shaft and a rator sleeved onto the drive shaft. The drive shaft is arranged within the stator along the direction parallel to the length of the stator. An intake plate is arranged at the lower end of the stator. A discharge plate is arranged at the upper end of the stator. The intake plate, the discharge plate, and the stator form a cylindrical cavity. The rotor is arranged between the intake plate and the discharge plate. An intake opening for taking in the crude oil is arranged on the intake plate. A discharge opening for discharging the crude oil is arranged on the discharge plate. The method utilizing the vane pump for conveying the fluid performs lifting by taking in and discharging the fluid in the directions of the ends of the stator. 1. A crude oil lifting system , characterized in that it comprises a oil pipe and a oil well pump connected to the oil pipe , said oil well pump is a vane pump , said vane pump comprises a plurality of tube shaped stators successively engaged with one another from bottom to top according to a direction from head to tail , a driving shaft provided through the plurality of stators parallel to the length direction of the plurality of stators , at the lower end of each said stator is provided with a suction disc , and at the upper end of each stator is provided with a discharging disc , each said stator forms a tube shaped inner chamber with adjacent suction disc and discharging disc , in each inner chamber is provided with a rotor encasing said driving shaft , said rotor is located between said suction disc and said discharging disc , on said suction disc is arranged a suction inlet for sucking crude oil , and on said discharging ...

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Номер записи: 13
29-01-2015 дата публикации

VARIABLE DISPLACEMENT ROTARY PUMP AND DISPLACEMENT REGULATION METHOD

Номер: US20150030485A1
Автор: Cadeddu Leonardo, Cortesi Matteo
Принадлежит: VHIT S.P.A.

A rotary positive displacement pump for fluids, in particular for the lubrication oil of a motor vehicle engine (), has a displacement that can be regulated by means of the rotation of a stator ring () having an eccentric cavity () in which the rotor () of the pump () rotates. The stator ring () is configured as a multistage rotary piston for displacement regulation and is arranged to be directly driven by a fluid under pressure, in particular oil taken from a delivery side () of the pump or from a point of the lubrication circuit located downstream the oil filter (). The invention also concerns a method of regulating the displacement of the pump () and a lubrication system for a motor vehicle engine in which the pump () is used. 114-. (canceled)15. A variable displacement rotary positive displacement pump for fluids , comprising a rotor arranged to rotate within an eccentric cavity of a stator ring in turn arranged to be rotated within a predetermined angular interval , as operating conditions of the pump vary , in order to vary a relative eccentricity between the cavity and the rotor and hence the displacement of the pump , characterised in that the stator ring is configured as a multistage rotary piston for displacement regulation , arranged to be directly driven by a fluid under pressure.16. The pump as claimed in claim 15 , wherein a pair of stages of the rotary piston are defined by external radial appendages of the ring claim 15 , which are slidable in fluid-tight manner against bases of respective chambers defined between the ring and a pump body claim 15 , the first appendage being permanently exposed to the action of the fluid under pressure claim 15 , and the second appendage being arranged to be exposed to the action of the fluid under pressure upon an external command claim 15 , jointly with the first appendage.17. The pump as claimed in claim 16 , wherein the ring has at least one annular cavity claim 16 , which houses a partition member rigidly ...

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Номер записи: 14
29-01-2015 дата публикации

VARIABLE CAPACITY VANE PUMP

Номер: US20150030486A1
Автор: AKATSUKA Koichiro, Fujita Tomoyuki, KATO Fumiyasu, SUGIHARA Masamichi
Принадлежит:

In a variable capacity vane pump in which a discharge capacity of a pump chamber is varied by varying an amount of eccentricity of a cam ring relative to a rotor, a port inner wall surface that extends around an inner peripheral cam surface of the cam ring when the cam ring moves in a direction for increasing the amount of eccentricity of the cam ring relative to the rotor is formed on an intake port. 1. A variable capacity vane pump used as a fluid pressure supply source , comprising:a rotor that is driven to rotate;a plurality of vanes housed in the rotor to be free to slide;a cam ring that includes an inner peripheral cam surface against which respective tip end portions of the vanes slide, and is capable of rotating eccentrically relative to a center of the rotor;a pump chamber defined by the rotor and the cam ring in between adjacent vanes;an intake port through which working fluid suctioned into the pump chamber is led; anda discharge port through which working fluid discharged from the pump chamber is led,wherein a port inner wall surface that extends around the inner peripheral cam surface of the cam ring when the cam ring moves in a direction for increasing an amount of eccentricity of the cam ring relative to the rotor is formed on the intake port.2. The variable capacity vane pump as defined in claim 1 , wherein the intake port is formed such that when the cam ring moves to a maximum eccentricity position claim 1 , the port inner wall surface extends without a step relative to the inner peripheral cam surface of the cam ring.3. The variable capacity vane pump as defined in claim 1 , wherein the intake port comprises:a communication start side intake port end portion at which communication with the pump chamber starts as the rotor rotates; anda communication end side intake port end portion at which communication with the pump chamber ends as the rotor rotates,the port inner wall surface is formed in the communication start side intake port end portion, ...

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Номер записи: 15
02-02-2017 дата публикации

VARIABLE DISPLACEMENT PUMP

Номер: US20170030351A1
Автор: Saga Koji
Принадлежит: Hitachi Automotive Systems, Ltd.

A variable displacement pump includes: a control mechanism arranged to be actuated based on a hydraulic pressure introduced into the introduction passage before the eccentric amount is minimized, and arranged to introduce the hydraulic pressure through a throttling to the second control hydraulic chamber when the hydraulic pressure introduced from the introduction passage is equal to or smaller than a predetermined pressure, and to discharge the hydraulic fluid within the second control hydraulic chamber in accordance with the hydraulic pressure when the hydraulic pressure introduced from the introduction passage becomes greater than the predetermined pressure; and a switching mechanism arranged to switch between a state in which the hydraulic fluid introduced into the introduction passage is introduced to the control mechanism, and a state in which the hydraulic fluid introduced into the introduction passage is discharged from the control mechanism. 1. A variable displacement pump comprising:a housing including a pump receiving chamber formed therein;a pump mechanism including a rotor rotationally driven, a plurality of vanes provided on an outer circumference side of the rotor to be projectable from and retractable into the rotor, and a movable member receiving the rotor and the plurality of the vanes therein to form a plurality of hydraulic fluid chambers for sucking and discharging the hydraulic fluid in accordance with the rotation of the rotor, the movable member being arranged to be moved within the pump receiving chamber so as to vary an eccentric amount of a center of an inner circumference of the movable member with respect to a center of the rotation of the rotor;an urging member provided within the housing to have a set load, and arranged to urge the movable member in a direction in which the eccentric amount of the center of the inner circumference of the movable member with respect to the center of the rotation of the rotor is increased;a first control ...

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Номер записи: 16
30-01-2020 дата публикации

SPRING STRUCTURE WITH SLIDING ELEMENT

Номер: US20200032791A1
Автор: ANZALONE Anthony, Bennett, Pryor Bryan K., SR. Andy
Принадлежит:

Variable displacement pumps and biasing assemblies for the same are disclosed. Example pumps may include a housing having an inlet and an outlet, and a rotor fixed for rotation with a shaft, with the shaft rotatably mounted within the housing. The pump may further include a plurality of radially extending vanes slidably disposed in the rotor, and a pivotable ring member defining a control chamber about the rotor, with the ring member being pivotable within the housing to vary an eccentricity of the ring member with respect to the rotor. The pump may further include a biasing assembly applying a biasing force to the ring member in a first direction about the shaft, with the biasing assembly including at least one resilient element extending longitudinally along a stand, and a sliding support slidably disposed on the stand and laterally supporting the resilient element with respect to the stand. 1. A variable displacement pump , comprising:a housing having an inlet and an outlet;a rotor fixed for rotation with a shaft, the shaft rotatably mounted within the housing;a plurality of radially extending vanes slidably disposed in the rotor;a pivotable ring member defining at least in part a control chamber about the rotor, wherein the ring member is pivotable within the housing to vary an eccentricity of the ring member with respect to the rotor; anda biasing assembly applying a biasing force to the ring member in a first direction about the shaft, the biasing assembly including at least one resilient element extending longitudinally along a stand, and a sliding support slidably disposed on the stand and laterally supporting the resilient element with respect to the stand.2. The variable displacement pump of claim 1 , wherein the at least one resilient element includes two separate resilient elements connected by the sliding support.3. The variable displacement pump of claim 2 , wherein the two separate resilient elements each have a same spring rate.4. The variable ...

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Номер записи: 17
30-01-2020 дата публикации

VARIABLE DISPLACEMENT PUMP

Номер: US20200032793A1
Автор: OHNISHI Hideaki, Saga Koji, Watanabe Yasushi
Принадлежит: Hitachi Automotive Systems, Ltd.

Variable displacement pump has first control hydraulic chamber giving force to cam ring in direction that decreases volume variation of each pump chamber by internal pressure, second control hydraulic chamber giving force to cam ring in direction that increases volume variation of each pump chamber by internal pressure, first seal surface formed on both end surfaces of cam ring, which are in sliding-contact with both opposing inside surfaces of pump body and cover member , and sealing gap between each pump chamber and first control hydraulic chamber, and second seal surface sealing gap between each pump chamber and second control hydraulic chamber at outlet section side. Radial direction width W of second seal surface is greater than that W of first seal surface. Increase in weight of the pump can be suppressed while suppressing increase in pump control pressure against intention of control. 1. A variable displacement pump comprising:a rotor that is driven and rotates;a plurality of vanes that are provided at an outer circumferential portion of the rotor so as to be able to extend and retract;a ring-shaped movable member that defines a plurality of working fluid chambers by accommodating the rotor and the plurality of vanes at an inner circumferential side of the movable member and changes a volume variation of each working fluid chamber during rotation of the rotor by moving so that an inner circumferential center of the movable member changes with respect to a rotation center of the rotor;a pump housing that houses therein the rotor, the vanes and the movable member, both axial direction end surfaces of the movable member being in sliding-contact with both opposing inside surfaces of the pump housing;an inlet section that is formed on at least one of the both inside surfaces of the pump housing and opens in an inlet-side area where a volume of each working fluid chamber is increased by the rotation of the rotor;an outlet section that is formed on at least one of ...

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Номер записи: 18
11-02-2016 дата публикации

HYDRAULIC CONVEYING DEVICE AND HYDRAULIC SYSTEM

Номер: US20160040665A1
Автор: Dodel Peter, Kirchner Marco, Langer Michael, RICHTER Christian
Принадлежит:

A hydraulic conveying device for an internal combustion engine may include a pendulum slide pump including an inner rotor drivingly connected to an outer rotor via a plurality of pendulum slides. A hydraulic actuation device may change an eccentricity between the inner rotor and the outer rotor via an actuation member. The actuation member may be prestressed by a spring device. The actuation device may further include a first pressure-setting chamber and a second pressure-setting chamber for adjusting the actuation member. At least one of the first pressure-setting chamber and the second pressure-setting chamber may be connected via a control valve to a pressure side of the pendulum slide pump. A hydraulic line may connect the pendulum slide cell pump downstream to a hydraulic medium filter. The control valve may be connected to the hydraulic line upstream of the hydraulic medium filter. 1. A hydraulic conveying device for an internal combustion engine , comprising:a pendulum slide cell pump including an inner rotor drivingly connected to an outer rotor via a plurality of pendulum slides,a hydraulic actuation device for changing an eccentricity between the inner rotor and the outer rotor, the actuation device including an actuation member for adjusting the eccentricity,the actuation member being prestressed via a spring device to define a maximum eccentricity,the actuation device further including a first pressure-setting chamber and a second pressure-setting chamber for adjusting the actuation member,wherein at least one of the first pressure-setting chamber and the second pressure-setting chamber is hydraulically connected via a control valve to a pressure side of the pendulum slide cell pump, the at least one of the first pressure-setting chamber and the second pressure-setting chamber hydraulically counteracting the spring device,wherein the pendulum slide cell pump is connected downstream to a hydraulic medium filter via a hydraulic line, andthe control valve ...

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Номер записи: 19
12-02-2015 дата публикации

VARIABLE CAPACITY TYPE VANE PUMP

Номер: US20150044083A1
Автор: AKATSUKA Koichiro, Fujita Tomoyuki, KATO Fumiyasu, SUGIHARA Masamichi
Принадлежит: KAYABA INDUSTRY CO., LTD.

A variable capacity type vane pump with a first fluid pressure chamber and a second fluid pressure chamber provided at opposite sides of a pivot point of a cam ring includes a control valve for controlling a drive pressure of working fluid introduced from a pump chamber to the second fluid pressure chamber, a suction pressure of the working fluid sucked into the pump chamber is constantly introduced to the first fluid pressure chamber, and the cam ring pivots in a direction to decrease a discharge capacity due to a pressure in the pump chamber acting on an inner peripheral cam surface during an operation to reduce the drive pressure, whereas the cam ring pivots in a direction to increase the discharge capacity during an operation to increase the drive pressure.

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Номер записи: 20
18-02-2021 дата публикации

PUMP DEVICE

Номер: US20210048025A1
Автор: ISHII Tetsuya
Принадлежит: Hitachi Automotive Systems, Ltd.

A cam ring is capable of moving while rolling on a cam support surface. The cam ring is provided such that within a range in which the cam ring can move on the cam support surface, an eccentricity amount increasing-side angle is always greater than an eccentricity amount decreasing-side angle. On a plane perpendicular to the rotation axis of a driving shaft, the eccentricity amount increasing-side angle is an angle, in a direction opposite to a rotation direction of the driving shaft, from a first reference line, which connects a tangent point between the cam ring and the cam support surface to a rolling center of the cam ring, to a starting end of a first discharge port. The eccentricity amount decreasing-side angle is an angle, in the rotation direction of the drive shaft, from the first reference line to a terminal end of the first discharge port. 1. A pump device comprising:a pump housing including a pump element container space, a suction passage, a discharge passage, a suction port, a discharge port, and a cam supporter surface, wherein the suction passage is connected to the suction port, and wherein the discharge passage is connected to the discharge port;a drive shaft rotatably formed in the pump housing;a rotor that is formed with the drive shaft and includes slits;vanes each of which is disposed movably in a corresponding one of the slits; anda cam ring shaped to be annular and disposed in the pump element container space,wherein:the cam ring and the rotor and the vanes form pump chambers;the cam ring forms a first fluid pressure chamber and a second fluid pressure chamber in the pump element container space;the suction port is open to a suction region in which each of the pump chambers increases in volume with rotation of the rotor;the discharge port is open to a discharge region in which each of the pump chambers decreases in volume with rotation of the rotor;the first fluid pressure chamber is a space formed outside the cam ring in a radial direction ...

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Номер записи: 21
16-02-2017 дата публикации

VANE PUMP WITH ADJUSTABLE DELIVERY VOLUME

Номер: US20170045047A1
Автор: Burdiak Johannes, Vogt Richard, Zellner Uwe
Принадлежит:

The invention proposes a vane pump (VP) with adjustable delivery volume, which vane pump has a pump housing (G), a cam ring (KR) arranged therein, and a rotor (R) which is rotatably movably mounted therein. The vane pump (VP) has a regulating device (RV) through which the delivered pressure medium (DM) flows and which has two outlets (A A) which are each connected to one of two pressure chambers (DK DK) in order to charge these with regulable proportions of the pressure medium (DM), wherein, to change the eccentricity of the cam ring (KR) relative to the rotor (R), the two pressure chambers (DK DK) act on the outer surface of the cam ring (KR). The vane pump (VP) has two criss-crossing control ducts (STK*, STK#) which connect in each case one of the outlets (A A) to one of the two pressure chambers (DK DK) in order to charge these with the regulable proportions of the pressure medium (DM). The criss-crossing control ducts (STK*, STK#) are preferably arranged in a cover (D′) of the pump housing such that the control ducts (STK*, STK#) are in a criss-crossing arrangement without coming into contact with one another. By means of this design, the vane pump (VP) can be easily reconfigured for a change in rotational direction of the rotor. 1121212. A vane pump (VP) with adjustable delivery volume , which vane pump has a pump housing (G) , a cam ring (KR) arranged therein , and a rotor (R) which is rotatably movably mounted therein and has radial slots , in which vanes (F) are arranged such that the vanes can be displaced radially and are positively guided , wherein , in order to deliver a pressure medium (DM) through the vane pump , the vanes slide along the cam ring with outer ends of the vanes resting on an inner wall of the cam ring (KR) , and the vane pump has a control device (RV) , through which pressure medium (DM) flows , and the control device has two outlets (A , A) , which are each connected to a respective one of two pressure chambers (DK , DK) , in order to ...

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Номер записи: 22
19-02-2015 дата публикации

VARIABLE DISPLACEMENT PUMP WITH DOUBLE ECCENTRIC RING AND DISPLACEMENT REGULATION METHOD

Номер: US20150050173A1
Автор: Cadeddu Leonardo
Принадлежит: VHIT S.P.A.

A rotary positive displacement pump for fluids, in particular for the lubrication oil of a motor vehicle engine (), has a displacement that can be regulated by means of the rotation of a stator ring () having an eccentric cavity () in which the rotor () of the pump () rotates. The stator ring () is located in an eccentric cavity () of an external ring (), which is configured as a multistage rotary piston for displacement regulation and is arranged to be directly driven by a fluid under pressure, in particular oil taken from a delivery side () of the pump or from a point of the lubrication circuit located downstream the oil filter (). The invention also concerns a method of regulating the displacement of the pump () and a lubrication system for the engine of a motor vehicle in which the pump () is used. 115-. (canceled)16. A variable displacement rotary positive displacement pump for fluids , comprising a rotor arranged to rotate within an eccentric cavity of a stator ring in turn arranged to be rotated within a first predetermined angular interval , as operating conditions of the pump vary , in order to vary a relative eccentricity between the cavity and the rotor and hence the displacement of the pump , characterised in that the stator ring is housed within an eccentric cavity of an external ring , which is configured as a multistage rotary piston arranged to be directly driven by a fluid under pressure in order to be rotated within a second predetermined angular interval , and arranged to transmit the rotary motion to the stator ring in order to make it rotate in opposite direction to the external ring.17. The pump as claimed in claim 16 , wherein the eccentric cavities have the same eccentricity and claim 16 , in a minimum displacement condition claim 16 , are arranged so that their eccentricities are offset by 180°.1810. The pump as claimed in claim 16 , wherein a pair of stages of the rotary piston are defined by external radial appendages of the external ring ...

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Номер записи: 23
03-03-2022 дата публикации

Helical spring for a pump having an adjustable delivery volume

Номер: US20220065248A1
Автор: Gerd Jäggle, Simone Schilling, Sven Peters, Thomas Tontsch, Winfried Baur
Принадлежит: Schwaebische Huettenwerke Automotive GmbH

A pump having an adjustable delivery volume, including: a pump housing featuring a delivery chamber which includes a delivery chamber inlet for a fluid and a delivery chamber outlet for the fluid; a delivery member, which can be rotated within the delivery chamber, for delivering the fluid; an adjusting device featuring a setting structure, which is mounted such that it can move back and forth within the pump housing in order to adjust the delivery volume of the pump, and a helical spring for applying a spring force, which acts in a setting direction, to the setting structure, wherein the windings of the helical spring are enclosed by an envelope lying on the outside of the helical spring wherein the cross-sectional area of the envelope as measured transversely with respect to the longitudinal direction of the spring changes progressively in the longitudinal direction of the spring.

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Номер записи: 24
26-02-2015 дата публикации

VARIABLE CAPACITY TYPE VANE PUMP

Номер: US20150056090A1
Автор: AKATSUKA Koichiro, Fujita Tomoyuki, KATO Fumiyasu, SUGIHARA Masamichi
Принадлежит:

In a variable capacity type vane pump in which a cam ring pivots, a discharge port is so formed that an absolute value of a difference between a discharge port start edge line inclination angle and a discharge port end edge line inclination angle is larger than a vane angle. 1. A variable capacity type vane pump used as a fluid pressure supply source , comprising:a rotor to be driven and rotated;a plurality of vanes reciprocally provided on the rotor;a cam ring having an inner peripheral cam surface, on which tip parts of the vanes slide with the rotation of the rotor;a pump chamber defined between adjacent vanes;a suction port configured to introduce working fluid sucked into the pump chamber;a discharge port configured to introduce the working fluid discharged from the pump chamber; anda first fluid pressure chamber and a second fluid pressure chamber provided at opposite sides of a pivot point of the cam ring;wherein if a virtual line connecting the pivot point of the cam ring and a rotation center of the rotor is a pivot center line, a virtual line connecting the rotation center of the rotor and a start edge of the discharge port is a discharge port start edge line, an angle of inclination of the discharge port start edge line with respect to the pivot center line of the cam ring is a discharge port start edge line inclination angle, a virtual line connecting the rotation center of the rotor and an end edge of the discharge port is a discharge port end edge line, an angle of inclination of the discharge port end edge line with respect to the pivot center line of the cam ring is a discharge port end edge line inclination angle and an angle of intersection between center lines of the adjacent vanes is a vane angle, the discharge port is so formed that an absolute value of a difference between the discharge port start edge line inclination angle and the discharge port end edge line inclination angle is larger than the vane angle.2. The variable capacity type vane ...

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Номер записи: 25
02-03-2017 дата публикации

VARIABLE DISPLACEMENT PUMP

Номер: US20170058893A1
Автор: Harada Kentaro, SHINOHARA Toru
Принадлежит: MAHLE FILTER SYSTEMS JAPAN CORPORATION

A variable displacement pump includes: a first pressure control chamber; a second pressure control chamber; a spring arranged to urge the cam ring in a second swing direction; a hydraulic pressure supply valve arranged to be opened by a predetermined hydraulic pressure, and thereby to introduce a control hydraulic pressure to the first control chamber; a connection passage formed in the housing or the cam ring, and arranged to connect the first pressure control chamber and the second pressure control chamber; and a relief circuit arranged to connect the second pressure control chamber and a low pressure side, to be opened or closed in accordance with a swing position of the cam ring, and to be closed when the cam ring is swung by a predetermined amount in the first direction. 1. A variable displacement pump comprising:a housing;a cam ring which has a circular shape, and which is swingably received within the housing;a pump unit which is received within the cam ring,which is arranged to be drivingly rotated by a drive shaft, and whose a capacity is varied in accordance with a swing position of the cam ring;a first pressure control chamber which is defined between an inner circumference surface of the housing and an outer circumference surface of the cam ring, and which is arranged to urge the cam ring in a first swing direction;a second pressure control chamber which is defined between the inner circumference surface of the housing and the outer circumference surface of the cam ring to confront the first pressure control chamber, which is arranged to urge the cam ring in a second swing direction, and which has a pressure receiving surface which is smaller than a pressure receiving surface of the first pressure control chamber;a spring arranged to urge the cam ring in the second swing direction;a hydraulic pressure supply valve arranged to be opened by a predetermined hydraulic pressure, and thereby to introduce a control hydraulic pressure to the first control ...

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Номер записи: 26
29-05-2014 дата публикации

VARIABLE DISPLACEMENT PUMP

Номер: US20140147322A1
Автор: Saga Koji
Принадлежит: Hitachi Automotive Systems, Ltd.

A variable displacement pump includes: a control mechanism arranged to be actuated based on a hydraulic pressure introduced into the introduction passage before the eccentric amount is minimized, and arranged to introduce the hydraulic pressure through a throttling to the second control hydraulic chamber when the hydraulic pressure introduced from the introduction passage is equal to or smaller than a predetermined pressure, and to discharge the hydraulic fluid within the second control hydraulic chamber in accordance with the hydraulic pressure when the hydraulic pressure introduced from the introduction passage becomes greater than the predetermined pressure; and a switching mechanism arranged to switch between a state in which the hydraulic fluid introduced into the introduction passage is introduced to the control mechanism, and a state in which the hydraulic fluid introduced into the introduction passage is discharged from the control mechanism. 1. A variable displacement pump comprising:a rotor rotationally driven;a plurality of vanes which are provided on an outer circumference side of the rotor to be projectable from and retractable into the rotor;a cam ring which receives the rotor and the plurality of vanes therein to separate a plurality of hydraulic fluid chambers, and which is arranged to be moved so as to vary an eccentric amount of a center of an inner circumference of the cam ring with respect to a center of the rotation of the rotor, and thereby to vary increase amounts or decrease amounts of volumes of the hydraulic fluid chambers at the rotation of the rotor;side walls disposed on both sides of the cam ring in the axial direction, at least one of the side walls including a suction portion opened in the hydraulic fluid chambers whose volumes are increased in the eccentric state of the cam ring, and a discharge portion opened in the hydraulic fluid chambers whose volumes are decreased in the eccentric state of the cam ring;an urging member which is ...

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Номер записи: 27
29-05-2014 дата публикации

Variable displacement pump

Номер: US20140147323A1
Автор: Hideaki Ohnishi, Koji Saga, Yasushi Watanabe
Принадлежит: HITACHI AUTOMOTIVE SYSTEMS LTD

A variable displacement pump including a control mechanism shiftable between first and second states, when the control mechanism is in the first state, the spool is in an initial position in which fluid communication between an introduction port and the remaining ports is restrained, fluid communication between a first control port and a drain port is allowed, and fluid communication between a second control port and the drain port is restrained, and when the control mechanism is shifted to the second state in accordance with increase in fluid pressure discharged, the spool is in an operating position in which the fluid communication between the introduction port and the first control port is allowed, the fluid communication between the first control port and the drain port is restrained, and the fluid communication between the second control port and the drain port is allowed.

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Номер записи: 28
19-03-2015 дата публикации

VARIABLE DISPLACEMENT VANE PUMP

Номер: US20150078944A1
Автор: IIJIMA Masaaki, Kumasaka Norikazu, Muramatsu Satoshi, Uchida Yukio
Принадлежит: Hitachi Automotive Systems Steering, Ltd.

A variable displacement vane pump is provided. This pump includes a pump housing including, a driving shaft, a rotor, a plurality of vanes, a cam support surface, a cam ring, an intake port formed at the pump housing, a discharge port formed at the pump housing, and a cam ring control mechanism disposed at the pump housing and configured to control an eccentric amount of the cam ring with respect to the rotor. The cam support surface is formed in such a manner that a shortest distance between the cam support surface and a reference line decreases from a second confining region side toward a first confining region side, and the cam ring is formed in such a manner that a cam profile radius change rate decreases first and then increases again on the second confining region side when eccentric amount of the cam ring is maximized. 1. A variable displacement vane pump comprising:a pump housing including a pump element containing portion;a driving shaft rotatably supported by the pump housing;a rotor disposed in the pump housing and configured to be rotatably driven by the driving shaft, the rotor including a plurality of slits in a circumferential direction;a plurality of vanes disposed so as to be configured to be projected from and inserted into the slits;a cam support surface formed on an inner circumferential side of the pump element containing portion;a cam ring disposed movably as if it rolls on the cam support surface in the pump element containing portion, the cam ring being annularly formed and defining a plurality of pump chambers on an inner circumferential side thereof together with the rotor and the vanes;an intake port formed at the pump housing so as to be opened in an intake region of the plurality of pump chambers, the intake region being a region where volume thereof increases as the rotor rotates, the intake port being disposed opposite of the driving shaft from the cam support surface;a discharge port formed at the pump housing so as to be opened in a ...

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Номер записи: 29
19-03-2015 дата публикации

Vane Pump

Номер: US20150078946A1
Автор: Geue Ingo, Hüser Theodor, Marburg Dennis, Schubert Udo
Принадлежит:

A vane pump with a pump housing in which a cam ring is constructed or arranged, and wherein a rotor is provided that is mounted in the cam ring so that it can rotate about a rotational axis , wherein the cam ring has an inner contour with a variable radius that varies between a maximum radius and a minimum radius in the circumferential direction about the rotational axis , wherein, in the radial gap between the inner contour and the rotor , a number of lift sections is constructed with pump chambers constructed in these sections, and wherein vane elements are mounted on the rotor , wherein these elements slide against the inner contour of the cam ring and limit the pump chambers in the circumferential direction. According to the invention, the radius of the inner contour varies about the rotational axis according to the function: r=r+a·sin(n·φ), where r=(r+r)/2, a =(r−r)/2, and φ=phase angle of the radius (r) between (r) and (r) in the direction of rotation of the rotor . 1. A vane pump comprising:a pump housing including a cam ring, and wherein a rotor is provided that is mounted in the cam ring so that it can rotate about a rotational axis,wherein the cam ring has an inner contour with a variable radius that varies between a maximum radius (rmax) and a minimum radius (rmin) in a circumferential direction about the rotational axis, wherein, in a radial gap between the inner contour and the rotor, a number (n) of lift sections are constructed with pump chambers in these sections, andwherein, on the rotor, vane elements are mounted that slide against the inner contour of the cam ring and limit the pump chambers in the peripheral direction, {'br': None, 'i': r=r', '+a', 'n, '0+sin(·φ),'}, 'wherein the radius (r) of the inner contour varies about the rotational axis according to the function [{'b': '0', 'r=(rmax+rmin)/2,'}, 'a=(rmax−rmin)/2 and', 'φ=phase angle of the radius between (rmin) and (rmax) in the direction of rotation of the rotor., 'where'}2. The vane pump ...

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Номер записи: 30
05-06-2014 дата публикации

INTERNAL GEAR PUMP

Номер: US20140154120A1
Автор: IZUTSU Masato, Kosugi Yasuhiro, Miyajima Junichi, Watanabe Takatoshi, Yamane Kosuke
Принадлежит: YAMADA MANUFACTURING CO., LTD

The internal gear pump according to the present invention includes: an inner rotor; an outer rotor that rotates with predetermined eccentricity to a rotation center of the inner rotor; an outer ring that rotatably holds the outer rotor, and has at least three cam protruded parts formed; a pump housing that has a rotor chamber; pins in the same number as that of the cam protruded parts; and operation means for oscillating the outer ring. Positions of the pins are set so that a diameter center of the holding-inner peripheral part of the outer ring is moved by the operation means along a locus of a circle, the radius of which is the eccentricity to the rotation center of the inner rotor. 1. An internal gear pump comprising: an inner rotor; an outer rotor that rotates with predetermined eccentricity to a rotation center of the inner rotor; an outer ring that includes a holding-inner peripheral part rotatably holding the outer rotor and that has at least three cam protruded parts formed along a circumferential direction of an outer periphery surface of the outer ring; a pump housing that has a rotor chamber in which the outer ring is freely and oscillatably arranged; pins that are in the same number as that of the cam protruded parts and are always brought into contact with the cam protruded parts , and that are installed in the rotor chamber as members separate from the pump housing; and operation means for oscillating the outer ring , wherein positions of the pins are set so that a diameter center of the holding-inner peripheral part of the outer ring is moved by the operation means along a locus of a circle , the radius of which is the eccentricity to the rotation center of the inner rotor.2. The internal gear pump according to claim 1 , wherein in contacting and sliding between the pins and the cam protruded parts claim 1 , the pins are brought into point contact with the cam protruded parts at the same portions thereof.3. The internal gear pump according to claim 1 ...

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Номер записи: 31
05-03-2020 дата публикации

Adaptive pivot for variable displacement vane pump

Номер: US20200072216A1
Автор: Bryan K. Pryor, Chung Y. Wei, Varoon Shankar
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Variable displacement pumps and methods of pumping a fluid are provided. An example pump may include a housing having an inlet and an outlet, a rotor fixed for rotation with a shaft, the shaft rotatably mounted within the housing, and a plurality of radially extending vanes slidably disposed in the rotor. The pump may further include a pivotable ring member defining at least in part a control chamber about the rotor, wherein the ring member is pivotable within the housing to vary an eccentricity of the ring member with respect to the rotor. The ring member is configured to shift a pivot position of the ring member from a first pivot position to a second pivot position displaced from the first pivot position.

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Номер записи: 32
24-03-2016 дата публикации

VARIABLE DISPLACEMENT VANE PUMP

Номер: US20160084249A1
Автор: Aoki Masaaki, Kido Yoshiaki, Kumasaka Norikazu, Muramatsu Satoshi, Ogiwara Yutaka
Принадлежит: Hitachi Automotive Systems Steering, Ltd.

A variable displacement vane pump includes a notch portion which is a flow path provided to extend from an initiating end of a discharge port towards a terminating end side of a suction port. The notch portion is formed so that a sectional area of the flow path is smaller than a sectional area of the discharge port at the initiating end thereof and that a length of the flow path in a circumferential direction is 1.5 pitches or larger. The terminating end of the suction port is a point where the vane in the suction area last overlaps the suction port. The initiating end of the discharge port is a point where the vane departed from the suction area first overlaps the discharge port. One pitch is a distance defied in the circumferential direction between adjacent vanes of the plurality of vanes. 1. A variable displacement vane pump comprising:a pump housing including a pump element accommodating portion;a drive shaft supported rotatably on the pump housing;a rotor provided in the pump housing, the rotor being configured to be driven to rotate by the drive shaft and including a plurality of slots in a circumferential direction;a plurality of vanes provided so as to appear from and disappear into the slots;a cam ring provided movably within the pump element accommodating portion, the cam ring being formed into an annular shape and defining a plurality of pump chambers on an inner circumferential side together with the rotor and the vanes;a suction port formed in the pump housing, the suction port opening to a suction area of the plurality of pump chambers, in which area a displacement is increased as the rotor rotates;a discharge port formed in the pump housing, the discharge port opening to a discharge area of the plurality of pump chambers, in which area a displacement is reduced as the rotor rotates;a cam ring control mechanism (a control valve, first and second fluid chambers and the like) provided in the pump housing and configured to control an eccentricity of the ...

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Номер записи: 33
12-03-2020 дата публикации

Variable Displacement Pump

Номер: US20200080555A1
Автор: Bennett, Claywell Mark R., McGowan Sean M., SR. Andy
Принадлежит:

A variable displacement pump is provided which better distributes stress across the rotor structure thereby reducing the risk of the rotor cracking and/or failing. The variable displacement pump includes a housing, a vane control ring, a rotor, a plurality of vanes, a slider ring, a biasing means, and a regulator valve. The housing defines an inlet port and a discharge port. The rotor may be rotationally driven by a drive shaft and coaxially aligned with the drive shaft. The rotor may define a plurality of primary ribs and a plurality of corresponding secondary ribs with an aperture defined between each primary rib and secondary rib. Each primary rib defines a primary rib thickness and each secondary rib defines a secondary rib thickness which is less than the primary rib thickness. 1. A variable displacement pump comprising:a housing defining an inlet port and a discharge port;a vane control ring;a rotor driven by a drive shaft and coaxially aligned with the drive shaft, the rotor defining a plurality of primary ribs and a plurality of secondary ribs which correspond with the plurality of primary ribs, the rotor further defining an aperture between each primary rib and each corresponding secondary rib, each primary rib having a primary rib thickness and each secondary rib having a secondary rib thickness which is less than the primary rib thickness;a plurality of vanes slidably disposed in the rotor, each vane in the plurality of vanes abutting the vane control ring at a proximate end of each vane;a slider ring pivotally affixed to the housing via a pivot, the slider ring defining a displacement control region with a first portion of the housing, the slider ring cooperating with the vane control ring, the rotor and the plurality of vanes form a plurality of pumping chambers that are successively connected to the inlet and discharge ports;a biasing means acting on the slider ring and urging the slider ring in a first direction via a first force; anda regulator valve ...

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Номер записи: 34
19-06-2014 дата публикации

Variable displacement pump

Номер: US20140170008A1
Автор: Atsushi Naganuma, Hideaki Ohnishi, Yasushi Watanabe
Принадлежит: HITACHI AUTOMOTIVE SYSTEMS LTD

Variable displacement oil pump for supplying oil to an internal combustion engine. Included is a cam ring having an inner peripheral section for accommodating the pump element thereinside, and an outer peripheral section having a swinging movement fulcrum. A control device for changeover controlling supply of a discharge pressure to first and second pressure chambers so the cam ring is swingingly movable to change an eccentricity amount of the cam ring relative to an axis of the rotor, wherein the first pressure receiving surface is set larger in pressure receiving area than the second pressure receiving surface, wherein a part of each of the first and second pressure chambers is disposed overlapping with the discharge region in a radial direction of the rotor, and wherein the first and second pressure chambers are disposed nearer to the swinging movement fulcrum than to the axis of the cam ring.

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Номер записи: 35
23-04-2015 дата публикации

VANE PUMP

Номер: US20150110659A1
Автор: OHNISHI Hideaki, Saga Koji, Watanabe Yasushi
Принадлежит: Hitachi Automotive Systems, Ltd.

A vane pump includes a rotor including a first annular groove and a second annular groove. The rotor further includes a cylindrical portion projecting axially from a radial inner side of the first annular groove and fitting over a drive shaft, and a slide contact portion formed on a radial inner side of the second annular groove. The cylindrical portion is slidably received in a bearing hole formed in a first side wall of a housing, whereas the slide contact portion abuts slidably on an inside wall surface of a second side wall of the housing. There is further formed, in the first annular groove, a recessed portion making a pressure receiving area of one of the first and second annular grooves greater than a pressure receiving area of the other of the first and second annular grooves. 1. A vane pump comprising:a housing including first and second side walls confronting each other and having therein an inside chamber to receive a pump element;a drive shaft which extends in an axial direction and which is received rotatably in first and second through holes formed, respectively, in the first and second side walls of the housing;a rotor mounted on the drive shaft and arranged to be driven rotationally by the drive shaft, and to serve as at least part of the pump element, the rotor including a first annular groove formed in a first axial end surface of the rotor, and a second annular groove formed in a second axial end surface of the rotor;a plurality of vanes received, respectively, in a plurality of slits formed radially in an outer circumferential portion of the rotor and arranged to slide radially in the slits, respectively;first and second guide rings received, respectively, in the first and second annular grooves and arranged to push the vanes radially outwards in the slits in accordance with rotation of the rotor; a cylindrical portion which is formed integrally on a radial inner side of the first annular groove, and which projects in the axial direction from the ...

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Номер записи: 36
19-04-2018 дата публикации

HYDRAULIC MACHINE

Номер: US20180106152A1
Автор: Mathers Norman Ian, Price Robert
Принадлежит:

A hydraulic device can include two or more rings, a rotor having a plurality of vanes, and an adjuster. The two or more rings can be rotatably mounted within the hydraulic device and arranged adjacent one another configured for relative rotation with respect to one another. The rotor can be disposed for rotation about an axis within the two or more rings and can have a plurality of circumferentially spaced slots, each slot having at least one of the plurality of vanes located therein. The plurality of vanes can be configured to be movable between a retracted position and an extended position where the plurality of vanes work a hydraulic fluid introduced adjacent to the rotor. The adjuster can be configured to translate linearly to rotatably position the two or more rings relative to one another to increase or decrease a displacement of the hydraulic fluid between the rotor and the two or more rings. 1. A hydraulic device comprising:two or more rings rotatably mounted within the hydraulic device and arranged adjacent one another configured for relative rotation with respect to one another;a rotor disposed for rotation about an axis within the two or more rings, the rotor having a plurality of circumferentially spaced slots configured to house a plurality of vanes therein, the plurality of vanes configured to be movable between a retracted position and an extended position where the plurality of vanes work a hydraulic fluid introduced adjacent the rotor; andan adjuster configured to translate linearly to rotatably position the two or more rings relative to one another to increase or decrease a displacement of the hydraulic fluid adjacent the rotor and the two or more rings.2. The hydraulic device of claim 1 , wherein the two or more rings are selectively rotatable relative to one another between a fully registered position where the inner surfaces of the two or more rings are in-phase with one another so that the inner surfaces substantially align and a fully ...

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Номер записи: 37
19-04-2018 дата публикации

VANE SPACING FOR A VARIABLE DISPLACEMENT OIL PUMP

Номер: US20180106252A1
Автор: ANTONOV Simon, Dziubinschi Gabriela, MARRI Vidya, Zouani Abdelkrim
Принадлежит:

A vane fluid pump for a vehicle component has an inner rotor supported within a cam ring. A series of vanes is positioned within a series of slots in an inner rotor to define and separate a series of non-uniformly sized segmented pumping chambers to disrupt harmonics during operation to reduce pressure ripples and associated tonal noise. One chamber has a first sector angle being within a first predetermined range of a nominal value. A portion of the chambers each has a sector angle greater than the first sector angle, with an average sector angle greater than the nominal value by a second predetermined range. A remaining portion of the chambers each has a sector angle less than the first sector angle, with an average sector angle less than the nominal value by the second predetermined range. 1. A vane fluid pump for a vehicle component comprising:a cam ring defining a continuous inner wall surrounding a cavity;an inner rotor supported within the cam ring, the inner rotor having an outer wall defining a series of slots spaced about the outer wall; anda series of vanes, each vane positioned within a respective slot of the inner rotor and extending radially outwardly to contact the continuous inner wall of the cam ring, the series of vanes defining and separating a series of non-uniformly sized segmented pumping chambers configured to disrupt harmonics during operation to reduce pressure ripples and associated tonal noise, one chamber of the series of chambers having a first sector angle being within a first predetermined range of a nominal value, each chamber in a first group of chambers of the series of chambers having a sector angle greater than the nominal value by a second predetermined range, and each chamber in a second remaining group of chambers of the series of chambers having a sector angle less than the nominal value by the second predetermined range.2. The pump of wherein the nominal value is 360 degrees divided by a number of vanes in the series of vanes ...

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Номер записи: 38
26-04-2018 дата публикации

VARIABLE DISPLACEMENT VANE PUMP

Номер: US20180112661A1
Автор: AKATSUKA Koichiro, Fujita Tomoyuki, GOMI Hiroki, KATOU Fumiyasu, NAKAGAWA Tomoyuki
Принадлежит: KYB Corporation

A variable displacement vane pump includes: a control orifice that imparts resistance to a flow of working oil discharged from pump chambers; a flow-amount control valve that operates in accordance with an upstream-downstream differential pressure of the control orifice and controls a flow amount of the working oil discharged from the pump chambers; a variable control valve that is operated by the working oil that has passed through the control orifice and controls an amount of eccentricity of a cam ring with respect to a rotor by controlling a pressure difference between a first fluid pressure chamber and a second fluid pressure chamber; and a return passage that is connected to the flow-amount control valve and circulates a part of the working oil discharged from the pump chambers through a suction passage. 1. A variable displacement vane pump comprising:a rotor linked to a driving shaft;a plurality of vanes provided so as to be able to reciprocate in a radial direction relative to the rotor;a cam ring having an inner circumferential surface on which tip ends of the vanes slide by rotation of the rotor;pump chambers defined by the rotor, the cam ring, and pairs of the adjacent vanes;a suction passage configured to guide working fluid to the pump chambers;a first fluid pressure chamber and a second fluid pressure chamber defined in an outer-circumferential accommodating space on outer side of the cam ring, the first fluid pressure chamber and the second fluid pressure chamber being configured to make the cam ring eccentric with respect to the rotor by pressure difference between the first fluid pressure chamber and the second fluid pressure chamber;a control restrictor configured to impart resistance to a flow of the working fluid discharged from the pump chambers;a flow-amount control valve operated in accordance with an upstream-downstream differential pressure of the control restrictor, the flow-amount control valve being configured to control flow amount of the ...

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Номер записи: 39
14-05-2015 дата публикации

PUMP AND HYDRODYNAMIC RETARDER EQUIPPED WITH SAID PUMP AND GEAR UNIT EQUIPPED WITH SUCH A PUMP

Номер: US20150129363A1
Автор: Wanninger Heinz
Принадлежит:

A pump has a pressure chamber and a control ring which is mounted to pivot about a pivoting axis and which undergoes a pivoting motion. The control ring can be pivoted about a deflection angle during its pivoting movement. An aperture is provided in the pressure chamber of the pump. The aperture opens or closes to varying degree based on the pivoting motion of the control ring. In a hydrodynamic retarder with such a pump, a lubricating and cooling medium is supplied at least to bearings of rotating components of the retarder. Differentiated lubrication and cooling, at least of the bearings, can be brought about during braking operation and during non-braking operation of the retarder. 112-. (canceled)1330. A pump () comprising:{'b': 42', '38', '40, 'a pressure chamber () and a control ring () which is mounted to pivot about a pivoting axis () and undergoes a pivoting motion, and the control ring during pivoting motion being pivotable through a deflection angle,'}{'b': 50', '50', '50', '50', '50', '42', '30', '50', '50', '50', '50', '50, 'i': a,', 'b,', 'c,', 'd', 'a,', 'b,', 'c,', 'd, 'an aperture (, ) being provided in the pressure chamber () of the pump () and, due to the pivoting motion of the control ring, the aperture (, ) either opening or closing to various extents.'}14303830. The pump () according to claim 13 , wherein the deflection angle of the pivoting motion of the control ring () is a function of a rotational speed of the pump ().1530384438405050505050a,b,c,d. The pump () according to claim 13 , wherein the control ring () is acted upon by a spring force of a compression spring () and when the deflection angle of the control ring () about the pivoting axis () is at a minimum claim 13 , the aperture ( claim 13 , ) is either at least mostly or completely closed claim 13 , and{'b': '38', 'when the deflection angle of the control ring () against the spring force of the compression spring is at a maximum, the aperture is open to a maximum extent.'} ...

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Номер записи: 40
25-04-2019 дата публикации

TWO-STAGE VARIABLE-DISPLACEMENT OIL PUMP

Номер: US20190120227A1
Автор: JUNG Hyuneu
Принадлежит: MYUNGHWA IND. CO., LTD.

A two-stage variable-displacement oil pump includes a casing having a suction port for suctioning oil stored in an oil tank and a discharge port for discharging, to a main gallery; an outer cam ring rotatably installed with respect to a pivot shaft provided inside the casing and having a rotary chamber therein; a rotor installed to be eccentric relative to the outer cam ring, rotating in concert with a rotation of a driving shaft, and including a plurality of vanes radially and slidably installed on an outer circumferential surface of the rotor; a support spring having one end contacting a spring support part formed on an outer side surface of the cam ring and the other end contacting an inner side surface of the casing; and a regulating chamber provided between the outer cam ring and the casing. 1. A two-stage variable-displacement oil pump comprising a pumping part and a path setting part , the pumping part comprising:a casing having a suction port for suctioning oil stored in an oil tank and a discharge port for discharging, to a main gallery, the oil suctioned into the suction port;an outer cam ring rotatably installed with respect to a pivot shaft provided inside the casing and having a rotary chamber therein;a rotor installed to be eccentric relative to the outer cam ring, rotating in concert with a rotation of a driving shaft, and including a plurality of vanes radially and slidably installed on an outer circumferential surface of the rotor;a support spring having one end contacting a spring support part formed on an outer side surface of the cam ring and the other end contacting an inner side surface of the casing, and thereby elastically supporting the outer cam ring; anda regulating chamber provided between the outer cam ring and the casing and configured to change a degree of eccentricity of the outer cam ring,the path setting part setting a circulating path of oil so that the oil discharged from a discharge port is supplied to the regulating chamber or ...

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Номер записи: 41
14-05-2015 дата публикации

POSTIVE DISPLACEMENT PUMP

Номер: US20150132169A1
Автор: Blank Andreas, Helle Torsten, Hess Bernd, Kawa Benjamin, Ott Hans-Peter, Schneider Willi, Thoma Martin
Принадлежит:

The invention relates to a positive displacement pump, including a pot-shaped housing, a rotor rotatably supported in the housing, and at least one blade movably guided in the rotor, the blade tip of which contacts the inner circumferential wall of the housing and divides the interior into chambers, wherein a locking mechanism that inhibits or brakes the movement of the blade in the rotor is provided. 1. A displacement pump comprising a pot-shaped housing , a rotor swivel-mounted in the housing and at least one blade guided movably in a movable inside the rotor , wherein the blade tip contacts the inner peripheral wall of the housing and divides the internal space into chambers when the displacement pump is operating , and wherein a locking mechanism inhibits the displacement of the blade inside the rotor , wherein the locking mechanism engages the blade tractionally or frictionally.2. The displacement pump as set forth in claim 1 , wherein in the rotor at least two blades arranged in parallel to one another are provided claim 1 , wherein the blades claim 1 , respectively claim 1 , comprise a first section remaining in the rotor in such a way that the respective first sections overlap at least sectionwise perpendicularly to the displacement plane of the blades claim 1 , and wherein the locking mechanism engages the first sections of the blades.3. The displacement pump as set forth in claim 2 , wherein the locking mechanism engages in a radial direction claim 2 , at the respective first section of the blade.4. The displacement pump as set forth in claim 2 , wherein the locking mechanism is arranged in an intermediate space provided between the first sections of the blades and acts in radial direction on the broadsides of the first sections of the blades.5. The displacement pump as set forth in claim 4 , wherein the locking mechanism comprises a flexible blocking element claim 4 , which is arranged in the intermediate space and which has a recess and an expansion ...

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Номер записи: 42
21-05-2015 дата публикации

Oil Pump

Номер: US20150139841A1
Автор: IZUTSU Masato, Kosugi Yasuhiro, Miyajima Junichi, Watanabe Takatoshi
Принадлежит:

An oil pump includes an inner rotor, an outer rotor, an outer ring, and a pump housing including a suction port and a discharge port, and including a first seal land formed between a terminal end section of the suction port and a start end section of the discharge port, and moreover including a rotor chamber that houses the inner rotor, the outer rotor, and the outer ring. In swing of an angle from an initial position to a final position of the outer ring, a final position eccentric axis connecting a rotation center of the inner rotor and a rotation center of the outer rotor is turnable in an area of an angle exceeding 90 degrees on the suction port side with respect to an initial position eccentric axis. 1. An oil pump comprising:an inner rotor including outer teeth;an outer rotor including inner teeth that form, together with the outer teeth, cells, and rotating while having a predetermined eccentricity amount with respect to a rotation center of the inner rotor;an outer ring that swings, with respect to a rotation center of the inner rotor, a rotation center of the outer rotor along a track circle having the eccentricity amount as a radius; anda pump housing including a suction port and a discharge port, and including a first seal land formed between a terminal end section of the suction port and a start end section of the discharge port, and moreover including a rotor chamber that houses the inner rotor, the outer rotor, and the outer ring, whereinin swing of an angle from an initial position to a final position of the outer ring, a final position eccentric axis connecting the rotation center of the inner rotor and the rotation center of the outer rotor is turnable in an area of an angle exceeding 90 degrees on the suction port side with respect to an initial position eccentric axis.2. The oil pump according to claim 1 , wherein claim 1 , in the swing from the initial position to the final position of the outer ring claim 1 , the final position eccentric axis ...

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Номер записи: 43
21-05-2015 дата публикации

BLADE-TYPE FLUID TRANSMISSION DEVICE

Номер: US20150139846A1
Автор: Yang Gene-Huang, Yang Shun-Ji
Принадлежит:

A blade-type fluid transmission device includes a rotor eccentrically located in the room of a stator and the outer periphery of the rotor is tangent to the inner periphery of the room. At least one blade is pivotably connected to stator and movably inserted in at least one slot of the rotor. The distal end of the at least one blade is in contact with the inner periphery of the room so as to form a space for receiving fluid between the outer periphery of the rotor and the inner periphery of the room. The contact between the at least one blade and the inner periphery of the room increases the efficiency for transmitting fluid which enters into the stator from an inlet and leaves from the stator from an outlet. 114-. (canceled)15. A fluid transmission device comprising:{'b': 10', '13', '13', '132', '10', '14', '15', '14', '15', '13, 'a stator having a room defined therein and the room having a circular inner periphery , the stator having an inlet and an outlet , the inlet and the outlet communicating with the room ;'}{'b': 20', '21', '22', '21', '21', '13', '21', '132', '13', '14', '15', '21', '132', '13', '23', '21', '13', '22', '10, 'a rotor having a cylindrical body and a shaft which extends through the cylindrical body , the cylindrical body eccentrically located in the room , an outer periphery of the cylindrical body being tangent to the inner periphery of the room , the inlet and the outlet respectively located adjacent to a position where the outer periphery of the cylindrical body is tangent to the inner periphery of the room , two slots defined diametrically in the outer periphery of the cylindrical body and respectively communicating with the room , the shaft extending through the stator and adapted to be connected with a power source;'}{'b': 36', '38', '23', '36', '38', '21', '36', '38', '132', '13', '21', '132', '13, 'a first blade and a second blade located within the slots respectively, a first end of each of the first and second blades , pointing an ...

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Номер записи: 44
19-05-2016 дата публикации

VARIABLE LUBRICANT VANE PUMP

Номер: US20160138592A1
Автор: CELATA BERNARDO, CELATA NICOLA, MORIGLIA MAURIZIO
Принадлежит: PIERBURG PUMP TECHNOLOGY GMBH

A variable lubricant vane pump which provides a pressurized lubricant for an engine includes a pump housing comprising a pump chamber. The pump chamber comprises pump compartments which rotate from a charge zone to a discharge zone. The pressurized lubricant is discharged from the pump compartments into an outlet cavity. A control ring envelopes the pump chamber and shifts between high and a low pumping volume position. A pump rotor comprises radially slidable vanes which rotate in the control ring. A pressure control chamber pushes the control ring into the high pumping volume direction. A control valve connects or disconnects the pressure control chamber to a lubricant tank. A pilot chamber pushes the control ring into the low pumping volume direction. A pilot chamber channel connects the outlet cavity with the pilot chamber. A control chamber channel connects the outlet cavity with the pressure control chamber. 17-. (canceled)8. A variable lubricant vane pump for providing a pressurized lubricant for an internal combustion engine , the variable lubricant vane pump comprising:a pump housing;a pump chamber arranged in the pump housing, the pump chamber comprising a plurality of pump compartments which are configured to rotate from a charge zone to a discharge zone, the pressurized lubricant being discharged from the plurality of pump compartments into an outlet cavity;a control ring configured to be shiftable and to envelope the pump chamber;a pump rotor comprising a static rotor axis and vanes which are configured to be radially slidable and to rotate in the control ring, the control ring being shiftable with respect to the rotor axis between a high pumping volume position and a low pumping volume position;a pressure control chamber configured to push the control ring into the high pumping volume direction, the pressure control chamber being loaded with lubricant from the outlet cavity;a control valve configured to connect or to disconnect the pressure control ...

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Номер записи: 45
07-08-2014 дата публикации

VARIABLE DISPLACEMENT OIL PUMP

Номер: US20140219847A1
Автор: OHNISHI Hideaki, Saga Koji, Watanabe Yasushi
Принадлежит: Hitachi Automotive Systems, Ltd.

A variable displacement oil pump includes: a switching mechanism arranged to switch a state in which the hydraulic fluid is introduced to the second control hydraulic chamber through a connection passage, and a state in which the hydraulic fluid is discharged from the second control hydraulic chamber through the connection passage; and a control mechanism arranged to be actuated before the eccentric amount of the cam ring becomes minimum, and arranged to vary an opening area of the connection passage as the discharge pressure is increased, and to vary an opening area of a discharge passage arranged to discharge the hydraulic fluid within the second control hydraulic chamber, in a direction opposite to a direction of a variation of the opening area of the introduction passage. 1. A variable displacement oil pump comprising:a rotor rotationally driven;a plurality of vanes provided in an outer circumference portion of the rotor to be projectable from and retractable into the rotor;a cam ring which receives the rotor and the vanes therein to form a plurality of pump chambers, and which is moved so as to vary an eccentric amount of a center of an inner circumference surface of the cam ring with respect to a center of a rotation of the rotor;a suction portion opened in the pump chambers whose volumes are increased when the cam ring is eccentrically moved in a first direction with respect to the center of the rotation of the rotor;a discharge portion opened in the pump chambers whose volumes are decreased when the cam ring is eccentrically moved in a second direction with respect to the center of the rotation of the rotor;an urging member arranged to urge the cam ring in the first direction in which the eccentric amount of the cam ring is increased with respect to the center of the rotation of the rotor;a first control hydraulic chamber which is arranged to receive a discharge pressure from the discharge portion through an introduction passage, and thereby to apply, to the ...

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Номер записи: 46
17-05-2018 дата публикации

VARIABLE CAPACITY OIL PUMP

Номер: US20180135625A1
Автор: NAGANUMA Atsushi, Watanabe Yasushi
Принадлежит: Hitachi Automotive Systems, Ltd.

A variable capacity oil pump controlling a pump discharge pressure to a two-stage characteristic includes: an electromagnetic switching valve formed to enable a switching between a state in which oil is discharged from a second control oil chamber and a state in which oil is introduced into the second control oil chamber; a pilot valve controlled by a discharge pressure by oil and a biasing force by a control spring and configured to supply a hydraulic pressure to a first control oil chamber in accordance with oil, to interrupt the supply of the hydraulic pressure, and to supply or exhaust the hydraulic pressure to or from second control oil chamber; and an intermediate passage. Oil exhausted from the first and second control oil chambers is not introduced into an inside of a control spring housing chamber in which a control spring of the pilot valve is arranged. 1. A variable capacity oil pump comprising:a pump constituting member which operatively discharges a working oil sucked from a suction section through a discharge section, with a volume of a plurality of pump chambers varied by a rotational drive through an internal combustion engine;a movable member which is operatively moved to modify a volume variation quantity of the plurality of pump chambers according to a movement of the movable member;a biasing mechanism which is installed in a state in which a set load is provided to bias the movable member in a direction in which the volume variation quantity of the plurality of pump chambers is increased;a first control oil chamber configured to act a force in a direction in which the volume variation quantity of the plurality of pump chambers is decreased upon the movable member in response to a supply of the working oil into the first control oil chamber;a second control oil chamber configured to act a force in a direction in which the volume variation quantity of the plurality of pump chambers is increased upon the movable member in response to a supply of the ...

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Номер записи: 47
02-06-2016 дата публикации

Variable displacement oil pump

Номер: US20160153325A1
Автор: Koji Saga
Принадлежит: HITACHI AUTOMOTIVE SYSTEMS LTD

In a variable displacement oil pump, a drain chamber 36 partitioned with respect to first and second control oil chambers 31, 32 and which serves to generate a biasing force in a concentric direction based on a pump drain pressure directly introduced from a drain port 22 a is interposed between first control oil chamber 31 which serves to generate a biasing force in the concentric direction in which a volume variation quantity of a plurality of pump chambers PR for a cam ring 15 based on a control pressure as a main gallery pressure introduced from an internal combustion engine and second control oil chamber 32 which serves to generate the biasing force in an eccentric direction in which the volume variation quantity of the plurality of pump chambers PR is increased for cam ring 15 based on the control pressure.

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Номер записи: 48
23-05-2019 дата публикации

PUMP UNIT WITH INTEGRATED PISTON PUMP AND ELECTRIC MOTOR

Номер: US20190154036A1
Автор: Nieuwenhuis Marcel Gerardus Maria
Принадлежит:

An automotive hydraulic actuating system for actuating a movable vehicle part, like a roof part or a wheel suspension. The actuating system comprises a pump unit. The pump unit comprises a piston pump which has a pump rotor and an electric motor which has a motor rotor. The pump rotor and motor rotor are incorporated into a single common rotor. The rotor is a one piece item. The rotor is positioned inside a pump chamber around a pump stator of the piston pump. The pump stator provides a full support to the common rotor. Advantageously, without a separate motor stator, the pump unit has a more compact configuration. Additionally, the pump unit has an improved dynamic performance which contributes to a silent and reliable operation at a high rotational speed. 117-. (canceled)18. A pump unit for pressurising a hydraulic actuating system in particular for pressurising an automotive actuating system , like a convertible roof system , boot lid , hood cover system or wheel suspension of a vehicle , wherein the pump unit comprises a pump housing including a pump chamber for housing a piston pump and wherein the pump unit further comprises an electric motor for driving the piston pump , a motor rotor wherein the motor rotor comprises a longitudinal motor rotor body including several magnets at an outer surface, wherein the motor rotor body defines an axial axis;', 'a field coil which is positioned opposite the magnets of the motor rotor body for rotationally driving the motor rotor body;, 'wherein the electric motor comprises a pump stator which is stationarily positioned inside the pump chamber, which pump stator has a longitudinal stator body, in which the pump stator body includes at least two channels serving respectively as an inlet or outlet channel;', 'a pump rotor positioned around the pump stator body, which pump rotor has a pump rotor body which is driveable in a rotational direction about the axial axis, wherein the pump rotor body includes several cylinder holes ...

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Номер записи: 49
04-09-2014 дата публикации

VARIABLE DISPLACEMENT PUMP HAVING ROTATING CAM RING

Номер: US20140248171A1
Автор: Clements Martin A., Hansen Lowell D.
Принадлежит: EATON INDUSTRIAL CORPORATION

Vane pump mechanical losses are reduced by removing vane friction losses and replacing them with lower magnitude journal bearing fluid film viscous drag losses. A freely rotating cam ring is supported by a journal bearing. A relatively low sliding velocity is imposed between the cam ring and the vanes). This permits the use of less expensive and less brittle materials in the pump by allowing the pump to operate at much higher speeds without concern for exceeding vane tip velocity limits. 1. A pump comprising:a housing having a cavity, at least a portion of the cavity forming a pump chamber;a shaft;a rotor received in the pump chamber and operatively driven by the shaft for rotation relative to the housing;at least one vane extending radially outward from the rotor;an annular cam ring received around the rotor and mounted for rotation relative to the housing, and relative to the rotor;a cam sleeve received around the cam ring; andan actuator assembly including first and second piston actuators operatively engaging the cam sleeve and selectively moving a centerpoint of the cam sleeve relative to the housing to alter the displacement of the pump.2. The pump of wherein the first and second piston actuators are disposed in opposing relation.3. The pump of wherein the first and second piston actuators engage first and second lobes claim 2 , respectively claim 2 , extending from the cam sleeve.4. The pump of wherein the first and second lobes extend from a peripheral region of the cam sleeve and the piston actuators move along a tangential region relative to the cam sleeve.5. The pump of wherein the cam sleeve is secured against rotation relative to the housing by a pin located at region diametrically opposite the tangential region.6. The pump of further comprising a spacer sleeve interposed between the cam sleeve and the housing claim 5 , the cam sleeve secured to the spacer ring with the pin for selective pivoting movement relative thereto.7. The pump of wherein the at ...

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Номер записи: 50
14-06-2018 дата публикации

VANE PUMP WITH ONE OR MORE LESS RESTRICTED VANES

Номер: US20180163543A1
Автор: MORTON Paul
Принадлежит:

A vane pump that employs one or more less restricted vanes (or looser vanes) within its rotor is described herein. The less restricted vane(s) are configured to radially move outwardly before the remaining vanes during startup. In one case, for example, at least one vane has a different thickness (e.g., thinner) as compared to the thickness of the remaining vanes. In another case, at least one slot has a different width (e.g., wider) as compared to the width of the other slots. The less restricted vane facilitates a cold start in highly viscous oil by allowing easier radial displacement and thus earlier initial build-up of pressure in the pump. The pump may be used with an engine or transmission. 1. A vane pump comprising:an inlet for receiving fluid from a source;an outlet for delivering pressurized fluid to a system therefrom;a pressure chamber cam having an internal space defined by an inside surface and communicated to the inlet and outlet;a rotor rotatably received within the internal space of the pressure chamber cam, the rotor having a plurality of radial slots and a plurality of vanes received and movable within respective radial slots radially towards the inside surface of the pressure chamber cam; anda drive shaft connected to the rotor for rotating the rotor to cause the vanes to draw lubricant in from the inlet and pressurize the lubricant for expelling out through the outlet;the rotor having the radial slots thereof communicated to the pressurized fluid to bias the vanes radially outward therefrom using the fluid pressure;wherein, for at least one of the plurality of vanes, a distance between an outer face of the at least one vane and an inner face of its respective slot is greater than distances between outer faces of the remaining vanes and inner faces of their respective slots to facilitate radially outward movement thereof towards the inside surface of the pressure chamber cam by centrifugal force during initial start-up of the pump.2. The vane pump ...

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Номер записи: 51
15-06-2017 дата публикации

Pump exhibiting an adjustable delivery volume

Номер: US20170167484A1
Автор: Fabian Eisele, Stefan Küchle, Sven Peters, Thomas Finsterle, Thomas Wahl, Volker Stöhr
Принадлежит: Schwaebische Huettenwerke Automotive GmbH

A pump which exhibits an adjustable delivery volume, the pump including (a) a pump housing comprising a delivery chamber; (b) a delivery rotor which can be rotated about a rotary axis within the delivery chamber, for delivering the fluid; (c) an adjusting device, including: (c1) an adjusting member which can be adjusted in the pump housing in order to adjust the delivery volume of the pump; (c2) a first setting chamber for generating a first setting pressure for adjusting the adjusting member; (c3) and a second setting chamber for generating a second setting pressure for adjusting the adjusting member; (d) a fluidically operable valve for adjusting the setting pressure of the first setting chamber; (e) and an electromagnetic valve, comprising: a pressure port for a setting fluid which is diverted from the high-pressure side; and a relief port for the setting fluid.

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Номер записи: 52
29-09-2022 дата публикации

VARIABLE DISPLACEMENT LUBRICANT PUMP

Номер: US20220307497A1
Автор: Cuneo Carmine, LAZZERINI MASSIMILIANO, MALVASI ALESSANDRO
Принадлежит: PIERBURG PUMP TECHNOLOGY GMBH

A variable displacement lubricant pump for providing a pressurized lubricant for a motor vehicle. The pump includes a pump rotor which rotates about a rotor axis and a control ring which is shiftable. The pump rotor includes a pump rotor shaft, a rotor body having vane slits, and pump vanes which are arranged in and which axially slide in the vane slits. The control ring can be actuated to set an eccentricity of the control ring to define a volumetric pump performance. The control ring defines a pump chamber which is separated by the pump vanes into pumping compartments. The control ring includes a control ring main body, bushing rings which are arranged separately at a radial inside of the control ring main body, and a radial inlet opening and/or a radial outlet opening. The radial inlet opening and/or the radial outlet opening is/are arranged axially between the bushing rings. 18-. (canceled)9. A variable displacement lubricant pump for providing a pressurized lubricant for a motor vehicle , the variable displacement lubricant pump comprising: a pump rotor shaft,', 'a rotor body which comprises vane slits, and', 'pump vanes which are arranged in and which are configured to be axially slidable in the vane slits; and, 'a pump rotor which is configured to rotate about a rotor axis, the pump rotor comprising,'} a control ring main body,', 'at least two bushing rings which are arranged separately at a radial inside of the control ring main body, and', 'at least one of a radial inlet opening and a radial outlet opening,', 'wherein,', 'the at least one of the radial inlet opening and the radial outlet opening is/are arranged axially between the at least two bushing rings., 'a shiftable control ring which is configured to be actuated so as to set an eccentricity of the shiftable control ring so as to define a volumetric pump performance, the shiftable control ring defining a pump chamber which is separated by the pump vanes into pumping compartments, the shiftable control ...

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Номер записи: 53
23-06-2016 дата публикации

PUMP APPARATUS

Номер: US20160177949A1
Автор: Kido Yoshiaki
Принадлежит: Hitachi Automotive Systems Steering, Ltd.

A pump apparatus includes: a spool valve including a first land portion, a second land portion, and a third land portion; a first pressure chamber into which an upstream pressure of the metering orifice is introduce; a second pressure chamber into which a downstream pressure of the metering orifice is introduced; a third pressure chamber into which the pressure of the discharge passage is introduced; a fourth pressure chamber into which a low pressure is introduced; and a first fluid pressure chamber side communication passage which is formed in the pump housing which is arranged to selectively supply the pressure of the third pressure chamber and the pressure of the fourth pressure chamber to the first fluid pressure chamber in accordance with the movement of the spool valve. 1. A pump apparatus comprising:a pump housing including a pump element receiving portion which is formed within the pump housing;a drive shaft which is inserted within the pump element receiving portion, and which is rotatably supported by the pump housing;a rotor which is provided within the pump element receiving portion, which is driven by the drive shaft to rotate, and which includes a plurality of slots in a circumferential direction;a plurality of vanes which are provided in the slots of the rotor to be moved in a radially outward direction and in a radially inward direction;a cam ring which is arranged to be moved within the pump element receiving portion, which has an annular shape, and which forms a plurality of pump chambers radially inside the cam ring, with the rotor and the vanes;a suction opening which is formed in the pump housing, and which is opened in a suction region in which volumes of the plurality of the pump chambers are increased in accordance with the rotation of the rotor;a discharge opening which is formed in the pump housing, and which is opened in a discharge region in which the volumes of the pump chambers are decreased in accordance with the rotation of the rotor ...

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Номер записи: 54
23-06-2016 дата публикации

VARIABLE DISPLACEMENT OIL PUMP

Номер: US20160177950A1
Автор: NAGANUMA Atsushi, OHNISHI Hideaki, Saga Koji, Watanabe Yasushi
Принадлежит: Hitachi Automotive Systems, Ltd.

A variable displacement oil pump for an internal combustion engine includes a pump element to vary inside volumes of pumping chambers to suck and discharge an oil, a varying mechanism to vary a pumping volume variation quantity of the pumping chambers, with movement of a movable member such as a cam ring, an urging mechanism to urge the movable member in a direction to increase the pumping volume variation quantity, first and second control oil chambers to urge the movable member to vary the pumping volume to variation quantity, and a control mechanism, such as a pilot valve, to control the supply/drainage of the oil to or from the second control oil chamber. An operation oil pressure of the movable member is set higher than an operation oil pressure of the control mechanism in a higher pressure region. 1. A variable displacement oil pump for supplying an oil to a sliding contact portion of an internal combustion engine , the variable displacement oil pump comprising:a pump element to be rotated by the internal combustion engine, and to vary inside volumes of pumping chambers to suck the oil through a suction portion and to discharge the oil through a discharge portion;a varying mechanism to increase and decrease a pumping volume variation quantity of the pumping chambers, with movement of a movable member;an urging mechanism provided in a preloaded state and arranged to urge the movable member in a direction to increase the pumping volume variation quantity;a first control oil chamber to produce an urging force to urge the movable member in a direction to decrease the pumping volume variation quantity, by receiving supply of the oil discharged from the discharge portion;a second control oil chamber to produce an urging force to urge the movable member in a direction to vary the pumping volume variation quantity, by receiving the supply of the oil discharged from the discharge portion; anda control mechanism operated before the pumping volume variation quantity ...

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Номер записи: 55
28-06-2018 дата публикации

PUMP DEVICE

Номер: US20180180043A1
Автор: MIYAZAWA Shigeyuki
Принадлежит: Hitachi Automotive Systems, Ltd.

A pump device is configured so that a first drive shaft for driving a first pump element E and a second drive shaft for driving a second pump element E are connected through a third drive shaft , and a first joint and a second joint are respectively connected between the first drive shaft and the third drive shaft , and between the second drive shaft and the third drive shaft , each of the first joint and the second joint being configured to permit a joining angle change or a change in an amount of eccentricity between the corresponding drive shafts. As a result of this configuration, a flexural deformation produced in the first and second drive shafts can be absorbed by means of the first and second joints , and thus it is possible to suppress the problem of the flexural deformation of one of the first and second drive shafts affecting the other. 1. A pump device comprising:a pump housing having a first pump element housing part and a second pump element housing part formed therein;a first pump element housed in the first pump element housing part and provided for suction and discharge of working fluid;a second pump element housed in the second pump element housing part and provided for suction and discharge of working fluid;a first drive shaft supported on the pump housing for rotationally driving the first pump element;a second drive shaft supported on the pump housing for rotationally driving the second pump element;a third drive shaft supported on the pump housing and located between the first drive shaft and the second drive shaft in an axial direction of the first drive shaft and provided for transmitting a rotational force between the first drive shaft and the second drive shaft;a first joint located between the first drive shaft and the third drive shaft and provided for transmitting a rotational force between the first drive shaft and the third drive shaft and configured to permit a joint angle change or a change in an amount of eccentricity between the ...

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Номер записи: 56
05-07-2018 дата публикации

VARIABLE DISPLACEMENT TYPE OIL PUMP

Номер: US20180187676A1
Автор: NAGANUMA Atsushi, OHNISHI Hideaki, Saga Koji, Watanabe Yasushi
Принадлежит: Hitachi Automotive Systems, Ltd.

In a variable displacement type oil pump, a swing member accommodates a pump forming member, and swings to vary a quantity of change of a volumetric capacity of each pump chamber. A biasing member biases the swing member in a direction to increase the quantity of change of the volumetric capacity of each pump chamber. A first control oil chamber applies a first torque to the swing member in a direction to reduce the quantity of change of the volumetric capacity of each pump chamber. A second control oil chamber applies a second torque to the swing member in a direction to increase the quantity of change of the volumetric capacity of each pump chamber, wherein the second torque is larger than the first torque. A switching mechanism switches between supply and drain of working oil with respect to the second control oil chamber. 1. A variable displacement type oil pump comprising:a pump forming member configured to be rotationally driven so as to change a volumetric capacity of each of a plurality of pump chambers, and suck working oil through a suction part, and discharge working oil through a discharge part;a swing member configured to accommodate the pump forming member inside of the swing member, and swing about a swing fulcrum so as to vary a quantity of change of the volumetric capacity of each of the plurality of pump chambers opened to the discharge part, wherein the swing fulcrum is set at an outer periphery of the swing member;a biasing member mounted with application of a setting load so as to bias the swing member in a direction to increase the quantity of change of the volumetric capacity of each of the plurality of pump chambers;a first control oil chamber configured to be supplied with working oil so as to apply a first torque to the swing member in a direction to reduce the quantity of change of the volumetric capacity of each of the plurality of pump chambers;a second control oil chamber configured to be supplied with working oil so as to apply a ...

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Номер записи: 57
23-07-2015 дата публикации

VANE PUMP UNIT

Номер: US20150204326A1
Автор: TAGA Naoya, TSUKAHARA Yoshihiro
Принадлежит: Showa Corporation

A vane pump unit assembled into a housing includes a rotor; a plurality of vanes; a cam ring; a first plate; a second plate; a connecting bar that has a first end portion fixed to the first plate, and a second end portion which protrudes from the second plate; and a clip that prevents the second plate and the cam ring from slipping out of the connecting bar. Before the clip is assembled into the housing, the retaining of the clip is positioned at least either between the first plate and the cam ring or between the second plate and the cam ring, in a place where a gap is formed. After the clip is assembled into the housing, the housing interposes the first plate, the cam ring, and the second plate in the axial direction, and the first and second plates are in close contact with the cam ring. 1. A vane pump unit that is assembled into a housing of a vane pump , the pump unit comprising:a rotor;a plurality of vanes that are slidably provided in the rotor;an annular cam ring that surrounds the rotor and the plurality of vanes;a first plate that is disposed on one end surface side of the rotor;a second plate that is disposed on the other end surface side of the rotor;a connecting bar that passes through the cam ring in an axial direction, and has a first end portion fixed to the first plate, and a second end portion which passes through the second plate and then protrudes from the second plate; anda retainer that is retained in the second end portion of the connecting bar, and prevents the second plate and the cam ring from slipping out of the connecting bar,wherein before the retainer is assembled into the housing, the retaining of the retainer is positioned at least either between the first plate and the cam ring or between the second plate and the cam ring, in a place where a gap is formed, andafter the retainer is assembled into the housing, the housing interposes the first plate, the cam ring, and the second plate in the axial direction, and the first and second ...

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Номер записи: 58
13-07-2017 дата публикации

Variable Displacement Vane Pump

Номер: US20170198692A1
Автор: De Andrade Filho Ayres Pinto, De Carvalho Meira João Luiz, Ribeiro Eduardo Gubbiotti
Принадлежит: Melling Tool Company

A variable displacement vane pump includes a biasing element for urging the control ring toward a first position that corresponds to a maximum volumetric capacity of the pump. Fluid pressure within a control chamber urges the control ring toward the second position. A feedback path is in communication with a fluid outlet of the pump for supplying a pressurized fluid. A first supply path provides the pressurized to the fluid inlet. A second supply path provides the pressurized fluid to the control chamber. A valve controls flow of the pressurized fluid via the second supply path by moving between a fully open position and a fully closed position in which flow of the pressurized fluid of along the second supply path is prevented by the valve. Moving the valve from the open position to the closed position increases the fluid pressure within the control chamber. 1. A variable displacement vane pump having a housing with a pump chamber having a fluid inlet and a fluid outlet , a pump control ring disposed within the housing for altering the displacement of the pump by rotating between a first position that corresponds to a maximum volumetric capacity of the pump and a second position that corresponds to a minimum volumetric capacity of the pump , a vane pump rotor rotatably mounted within the pump control ring , and the vane pump rotor having a plurality of slidably mounted vanes engaging an inside surface of the pump control ring , the vane pump rotor having an axis of rotation eccentric from a center of the pump control ring , the vane pump rotor rotating to pressurize fluid as the fluid moves from the fluid inlet to the fluid outlet , comprising:a biasing element for urging the control ring toward the first position;a control chamber formed between the housing and the pump control ring, wherein fluid pressure within the control chamber urges the control ring toward the second position;a feedback path in communication with the fluid outlet for supplying a pressurized ...

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Номер записи: 59
28-07-2016 дата публикации

OIL PUMP

Номер: US20160215775A1
Автор: TERADA Mitsuru
Принадлежит: AISIN SEIKI KABUSHIKI KAISHA

This oil pump is equipped with a rotatable inner rotor that includes a vane-housing unit housing multiple vanes so as to be capable of sliding in the radial direction, a rotatable annular outer rotor that includes multiple vane-connecting parts connecting the tip ends of the multiple vanes on the outside in the radial direction, first volume-changing parts, which are provided between the inner rotor and the outer rotor, and a first volume of which is changed in response to eccentricity of the inner rotor with respect to the outer rotor, thereby providing a pumping function, and second volume-changing parts, which are provided in the outer rotor, and a second volume of which is changed by a change in the distance between adjacent vane-connecting parts in the circumferential direction in response to eccentricity of the inner rotor with respect to the outer rotor, thereby providing a pumping function. 1. An oil pump comprising:a rotatable inner rotor that includes a vane-housing unit housing multiple vanes so as to be capable of sliding in a radial direction;a rotatable annular outer rotor that includes multiple vane-connecting parts connecting tip ends of the multiple vanes on an outside in the radial direction;first volume-changing parts, which are provided between the inner rotor and the outer rotor, and a first volume of which is changed in response to eccentricity of the inner rotor with respect to the outer rotor, thereby providing a pumping function; andsecond volume-changing parts, which are provided in the outer rotor, and a second volume of which is changed by a change in a distance between adjacent vane-connecting parts in a circumferential direction in response to the eccentricity of the inner rotor with respect to the outer rotor, thereby providing a pumping function.2. The oil pump according to claim 1 , further comprising third volume-changing parts claim 1 , a third volume of which in the vane-housing unit of the inner rotor is changed by slide of the ...

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Номер записи: 60
04-08-2016 дата публикации

VARIABLE DISPLACEMENT PUMP WITH ELECTRIC CONTROL OF DISPLACEMENT REGULATION AND METHOD OF REGULATING PUMP DISPLACEMENT

Номер: US20160222963A1
Автор: Cadeddu Leonardo, Fauda Alessandro
Принадлежит:

A rotary positive displacement pump for fluids, in particular, for the lubrication of a motor vehicle engine (), has a displacement that can be regulated through the rotation of a stator ring () having an eccentric cavity () in which the rotor () of the pump () rotates. The stator ring () is housed within an in eccentric cavity () of an external ring (). A rotor actuator (), controlled by the electronic control unit of the motor vehicle, causes a synchronous rotation by an equal amount in opposite directions of both rings. A method of regulating the displacement of the pump () and lubrication system for a motor vehicle engine in which the pump is used are also provided. 115115431434214211016263431431511511015062634214253153. A variable displacement rotary positive displacement pump for fluids , comprising a rotor (; ) arranged to rotate within an eccentric cavity (; ) of a stator ring (; ) in turn arranged to be rotated within a predetermined angular interval , as operating conditions of the pump (; ) vary and upon command of a system ( , ) detecting such conditions , in order to vary a relative eccentricity between the eccentric cavity (; ) and the rotor (; ) and hence the pump displacement , the pump (; ) further including an electromagnetic actuator () , integrated into or coupled with the pump , which is driven by said detecting system ( , ) and is arranged to generate a rotary motion and to transmit it to said stator ring (; ) through a toothed wheel (; ); {'b': 53', '153', '11', '11', '111', '42', '142, 'i': a', 'b, 'said toothed wheel (; ) is located at least in part in a stator cavity (, ; ) located in a peripheral position relative to said stator ring (; );'}, 'the pump being characterised in that {'b': 52', '152', '11', '11', '111, 'i': a', 'b, 'a toothed sector (; ) is located at the base of said peripheral stator cavity (, ; ).'}, 'and in that'}2521521111111531535053153ab. The pump as claimed in claim 1 , wherein said toothed sector (; ) located at the ...

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Номер записи: 61
13-08-2015 дата публикации

VARIABLE DISPLACEMENT VANE PUMP AND POWER STEERING SYSTEM

Номер: US20150226215A1
Автор: IMANAGA Hiroki, Muramatsu Satoshi, Uchida Yukio
Принадлежит: Hitachi Automotive Systems Steering, Ltd.

A variable displacement vane pump and a power steering system are to be provided which can secure a discharge flow rate when a steering wheel is turned while restricting the discharge flow rate when the steering wheel is not turned. 1. A variable displacement vane pump for supplying a hydraulic fluid to a power steering system of a vehicle , comprising:a pump housing having a pump element accommodating portion in an interior thereof;a drive shaft which is supported rotatably in the pump housing;a rotor which is accommodated in the pump element accommodating portion, which has a plurality of slits which are formed to be aligned in a circumferential direction and which is driven to rotate by the drive shaft;vanes which are provided so as to be extendable from and retractable into the slits;a cam ring which is provided movably in the pump element accommodating portion and which define a plurality of pump chambers together with the rotor and the vanes;a suction port which is provided in the pump housing and which opens to an area where some of the plurality of pump chamber increase gradually displacements thereof as the rotor rotates;a discharge port which is provided in the pump housing and which opens to an area where the others of the plurality of pump chambers decrease gradually displacements thereof as the rotor rotates;a suction line which is provided in the pump housing and which supplies a hydraulic fluid which is reserved in a reservoir tank to the suction port;a discharge line which is provided in the pump housing and which supplies a hydraulic fluid which is discharged from the discharge port to an exterior of the pump housing;a first fluid pressure chamber and a second fluid pressure chamber which constitute a pair of spaces which are formed between the cam ring and the pump element accommodating portion, the first fluid pressure chamber being formed on a side where a volume thereof decreases when the cam ring moves in a direction in which an eccentricity of ...

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Номер записи: 62
13-08-2015 дата публикации

VARIABLE DISPLACEMENT TRANSMISSION PUMP AND CONTROLLER WITH ADAPTIVE CONTROL

Номер: US20150226216A1
Автор: Mauser Thilo, Nguyen Van Doan
Принадлежит:

A variable displacement transmission pump having a controller for adjusting the displaced volume, which controller actuates corresponding adjuster actuators of the adjustable pump via a control valve, so that the pump can be adjusted from minimum to maximum displaced volume in order to achieve a constant pump outlet pressure for supplying a hydraulically operated transmission, wherein for different operating points of both the adjustable pump and the transmission, the input variables of the controller are adjusted in such a way that, independently of the individual operating points, the overall damping of the control system comprising pump and transmission—that is, using corresponding influence variables from these systems—can be maintained substantially constant under variable operating conditions by means of adjustable controller amplification. 1. A. variable displacement transmission pump having a controller for adjusting the displaced volume , wherein the controller actuates corresponding adjuster actuators of the adjustable pump via a control valve so that the pump can be adjusted from a minimum to a maximum displaced volume in order to achieve a constant pump outlet pressure for supplying a hydraulically-operated transmission , wherein for different operating points of both the adjustable pump and the transmission , the input variables of the controller are adjusted in such a way that , independently of the individual operating points , the overall damping of a control system comprising the pump and the transmission—that is , using corresponding influence variables from these systems—can be maintained substantially constant under variable operating conditions by means of adjustable controller amplification.4. The pump according to claim 1 , wherein a delivery-rate dependence of the adjustable controller amplification (V) is defined by the equation V˜Q(Q=volume flow rate).7. The pump according to claim 1 , wherein a rotational speed n and a system pressure p ...

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Номер записи: 63
02-07-2020 дата публикации

VANE PUMP HAVING HOLLOW PIVOT PIN WITH FASTENER

Номер: US20200208630A1
Автор: SHI Lixia
Принадлежит:

Disclosed is a vane pump including a housing, a pivot pin having a hollow portion mounted within the housing, a control slide displaceable about the pivot pin within the housing between a first slide position and a second slide position to adjust displacement of the pump through an outlet, and a cover attached to the housing via a fastener passing through the pivot pin such that the control slide rotates about the pivot pin with respect to the housing and the cover. In an example, the fastener passes through to the engine mount. The pivot pin does not create a fluid path through the hollow portion. 1. A vane pump comprising:a housing;a tubular pivot pin having a hollow portion mounted within the housing;a control slide mounted to the pivot pin for displacement within the housing between a first slide position and a second slide position to adjust displacement of the pump through an outlet; anda cover attached to the housing via a fastener passing through the pivot pin,wherein the pivot pin does not create a fluid path through the hollow portion.2. The vane pump according to claim 1 , further comprising:a control chamber on a first side of the control slide; anda second chamber on a second side of the control slide between the housing and the control slide,wherein the second chamber and the control chamber are not fluidically connected around the pivot pin.3. The vane pump according to claim 1 , wherein the fastener is a bolt passing through the housing claim 1 , the hollow portion of the pivot pin claim 1 , and the cover claim 1 , creating an attachment between components of the pump. The subject application claims priority to U.S. Provisional Patent Application No. 62/785,960, filed Dec. 28, 2018, the subject matter of which is incorporated herein by reference in its entirety.This disclosure relates generally to a vane pump. More particularly, the present disclosure relates to a pivot pin and assembly of a vane pump.Vane pumps are known for use for pumping fluids ...

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Номер записи: 64
09-08-2018 дата публикации

VARIABLE CAPACITY OIL PUMP

Номер: US20180223840A1
Автор: NAGANUMA Atsushi, OHNISHI Hideaki
Принадлежит: Hitachi Automotive Systems, Ltd.

A variable displacement oil pump includes: a pump constituting section; a movable member; an urging mechanism; a control hydraulic chamber group; a drain mechanism arranged to discharge the oil from a specific one control hydraulic chamber of the control hydraulic chamber group; and a control valve which into which the oil of an upstream side that is discharged from the discharge portion, or the oil from the control hydraulic chamber is introduced as a control hydraulic pressure, which is arranged to supply the oil of the upstream side that is discharged from the discharge portion to the specific one control hydraulic chamber, or to discharge the oil from the specific one control hydraulic chamber by the drain mechanism to regulate the pressure of the specific one control hydraulic chamber. 1. A variable displacement oil pump comprising:a pump constituting section arranged to be rotationally driven by an engine, to vary volumes of a plurality of pump chambers, and to discharge an oil sucked from a suction portion;a movable member arranged to be moved to vary variation amounts of the volumes of the plurality of the pump chambers;an urging mechanism provided to have a set load, and arranged to urge the movable member in a direction in which the variation amounts of the volumes of the plurality of the pump chambers are increased;a control hydraulic chamber group including one or more control hydraulic chamber which is arranged to vary the variation amounts of the volumes of the plurality of the pump chambers, and which includes at least a decrease side control hydraulic chamber arranged to receive the oil discharged from the discharge portion, and thereby to act a force to the movable member in a direction in which the variation amounts of the volumes of the plurality of the pump chambers are decreased;a drain mechanism arranged to discharge the oil from a specific one control hydraulic chamber of the control hydraulic chamber group; anda control valve which into which ...

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Номер записи: 65
16-08-2018 дата публикации

VANE PUMP AND DETERMINING METHOD FOR INNER PROFILE OF CAM RING COMPOSING THEREOF

Номер: US20180230803A1
Автор: KIM Sang-Woo
Принадлежит: MYUNGHWA IND. CO., LTD.

Disclosed is a vane pump comprising a cam ring accommodated in a pump housing, a rotor accommodated rotatably with respect to a rotational shaft in the cam ring, and a plurality of vanes coupled to the rotor to discharge fluid, wherein the cam ring has a ring shaped inner profile varied between a maximum radius (Rmax) and a minimum radius (Rmin) in a circumferential direction with respect to the rotational shaft, and the ring shaped inner profile comprises: a cycloid curve passing through a maximum radius point; a circular arc passing through a minimum radius point; and a tangent line connecting the cycloid curve to the circular arc with a tangential curvature. 1. A vane pump comprising a cam ring accommodated in a pump housing , a rotor accommodated rotatably with respect to a rotational shaft in the cam ring , and a plurality of vanes coupled to the rotor to discharge fluid ,wherein the cam ring has a ring shaped inner profile varied between a maximum radius (Rmax) and a minimum radius (Rmin) in a circumferential direction with respect to the rotational shaft, andthe ring shaped inner profile comprises:a cycloid curve passing through a maximum radius point;a circular arc passing through a minimum radius point; anda tangent line connecting the cycloid curve to the circular arc with a tangential curvature.2. The vane pump of claim 1 , wherein the cycloid curve is determined by x and y coordinates obtained by Mathematical equation 1 below.{'br': None, 'i': x=R', 'R, '(θ−sin θ)−π'}{'br': None, 'i': y=R', 'KR, '(1−cos θ)+\u2003\u2003[Mathematical equation 1]'}(where, R is a radius of a generating circle drawing a cycloid curve, θ is an angle of a parameter, and K is a constant of 1.5 to 3)3. The vane pump of claim 2 , wherein the tangent line is inclined at an angle of 4° to 15° with respect to a radius connecting a center of the rotational shaft to the maximum radius point.4. A method for determining an inner profile of a cam ring of a vane pump comprising a cam ring ...

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Номер записи: 66
17-08-2017 дата публикации

VARIABLE DISPLACEMENT PUMP

Номер: US20170234311A1
Автор: NAGANUMA Atsushi, Watanabe Yasushi
Принадлежит: Hitachi Automotive Systems, Ltd.

A variable displacement pump includes: an urging mechanism which includes two spring members; an electromagnetic switching valve which is arranged to connect the second control chamber and the discharge portion in an energized state, and to connect the second control chamber and the low pressure chamber in a deenergized state; and a control valve which is actuated by the pressure of the discharge portion, and which is arranged to decrease the pressure within the second control chamber when the pressure of the discharge portion becomes equal to or greater than a predetermined pressure. 1. A variable displacement oil pump provided to an internal combustion engine , the variable displacement oil pump comprising:a housing including a pump receiving chamber formed within the housing;a pump constituting section movably received within the pump receiving chamber, and arranged to be driven and rotated by the internal combustion engine, and thereby to discharge a hydraulic fluid sucked from a suction portion, an amount of the hydraulic fluid discharged from a discharge portion being varied in accordance with a position of the pump constituting section within the pump receiving chamber;an urging member provided within the housing, provided with a spring load, and arranged to urge the pump constituting section in a direction where the amount of the hydraulic fluid discharged from the discharge portion is increased;a first control hydraulic chamber formed between the pump constituting section and the pump receiving chamber, and arranged to receive the hydraulic fluid discharged from the discharge portion, a volume of the first control hydraulic chamber being increased when the pump constituting section is moved in a direction where the amount of the hydraulic fluid discharged from the discharge portion is decreased;a second control hydraulic chamber formed between the pump constituting section and the pump receiving chamber, and arranged to receive the hydraulic fluid ...

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Номер записи: 67
10-09-2015 дата публикации

VARIABLE DISPLACEMENT VANE PUMP

Номер: US20150252802A1
Автор: IMANAGA Hiroki, Uchida Yukio
Принадлежит: Hitachi Automotive Systems Steering, Ltd.

A variable displacement vane pump includes a pump housing, a drive shaft supported in the pump housing, a rotor rotated by the drive shaft, a plurality of vanes mounted to the rotor, a cam ring disposed movably around the pump element and a pressure plate arranged facing the rotor and the cam ring. The pressure plate has formed therein a discharge hole and a drive shaft insertion hole. The pump housing has formed therein a suction hole, a high-pressure chamber and a low-pressure chamber. The variable displacement vane pump further includes a first seal member disposed on a pressure receiving surface of the pressure plate so as to separate the drive shaft insertion hole from the high-pressure chamber and a second seal member disposed on the pressure receiving surface of the pressure plate so as to separate the low-pressure chamber from the high-pressure chamber and the drive shaft insertion hole. 1. A variable displacement vane pump for supplying a hydraulic fluid from a fluid reservoir , comprising:a pump housing provided with a pump element storage part;a drive shaft supported rotatably in the pump housing;a pump element placed in the pump element storage part, the pump element comprising: a rotor rotated by the drive shaft and having a plurality of slots formed therein at positions in a circumferential direction around a rotation axis of the rotor; and a plurality of vanes retractably mounted in the respective slots;an annular cam ring disposed movably around the pump element in the pump element storage part, thereby defining a plurality of pump chambers by the rotor, the vanes and the cam rings; anda pressure plate arranged in the pump element storage part, with the driving shaft being inserted through a drive shaft insertion hole of the pressure plate in an axial direction along the rotation axis of the rotor, and having a rotor-side surface facing the rotor and the cam ring and a pressure receiving surface opposite the rotor-side surface,the pressure plate ...

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Номер записи: 68
10-09-2015 дата публикации

VARIABLE DISPLACEMENT PUMP

Номер: US20150252803A1
Автор: OHNISHI Hideaki, Watanabe Yasushi
Принадлежит: Hitachi Automotive Systems, Ltd.

A variable displacement pump includes a variable mechanism configured to change a volume-variation rate of each pump chamber by movement of a movable member; a biasing mechanism provided to bias the movable member in a direction that increases the volume-variation rate; at least one reduction-side control oil chamber to which oil is supplied from a discharge portion such that the reduction-side control oil chamber applies force to the movable member in a direction that reduces the volume-variation rate; at least one increase-side control oil chamber to which oil is supplied from the discharge portion such that the increase-side control oil chamber applies force to the movable member in the direction that increases the volume-variation rate; and a control mechanism configured to control a oil quantity which is supplied to each control oil chamber. The total number of the control oil chambers is three or more. 1. A variable displacement pump comprising:pump constituting members configured to suck oil from a suction portion and discharge the oil to a discharge portion by volume variation of each of a plurality of pump chambers of the pump constituting members;a variable mechanism configured to change a rate of the volume variation of each of the plurality of pump chambers by movement of a movable member of the variable mechanism;a biasing mechanism provided to have a set load and to bias the movable member in a direction that increases the rate of the volume variation of each of the plurality of pump chambers;a reduction-side oil chamber group including at least one control oil chamber to which the oil is supplied from the discharge portion such that the at least one control oil chamber of the reduction-side oil chamber group applies force to the movable member in a direction that reduces the rate of the volume variation of each of the plurality of pump chambers;an increase-side oil chamber group including at least one control oil chamber to which the oil is supplied ...

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Номер записи: 69
30-08-2018 дата публикации

VARIABLE OIL PUMP

Номер: US20180245587A1
Автор: NISHIDA Yuki
Принадлежит: AISIN SEIKI KABUSHIKI KAISHA

A variable oil pump includes a pump housing, an oil pump rotor housed in the pump housing and rotationally driven, an adjustment member housed in the pump housing and adjusting an oil discharge amount from the oil pump rotor by being displaced due to a drive force while rotatably holding the oil pump rotor from an outer peripheral side, and a guide portion including a groove provided in the adjustment member and a pin provided on the pump housing and engaging with the groove. The guide portion guides relative displacement of the adjustment member with respect to the pump housing by engaging the groove and the pin with each other, and an inner surface of the groove and an outer surface of the pin come into line contact with each other along a direction in which the pin extends at an initial position where the adjustment member starts its displacement. 1. A variable oil pump comprising:a pump housing;an oil pump rotor housed in the pump housing and rotationally driven;an adjustment member housed in the pump housing and that adjusts an amount of oil discharged from the oil pump rotor by being displaced due to a drive force while rotatably holding the oil pump rotor from an outer peripheral side; anda guide portion including a groove provided in the adjustment member and a pin provided on the pump housing and that engages with the groove, and the guide portion that guides relative displacement of the adjustment member with respect to the pump housing by engaging the groove and the pin with each other, the guide portion in which an inner surface of the groove and an outer surface of the pin come into line contact with each other along a direction in which the pin extends at an initial position where the adjustment member starts to be displaced.2. The variable oil pump according to claim 1 , whereinat the initial position where the adjustment member starts to be displaced, the groove and the pin come into line contact with each other at two or more places.3. The variable ...

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Номер записи: 70
30-08-2018 дата публикации

VARIABLE OIL PUMP

Номер: US20180245588A1
Автор: ISODA Atsuo
Принадлежит: AISIN SEIKI KABUSHIKI KAISHA

A variable oil pump includes a pump housing, a cover, an oil pump rotor rotationally driven while housed in a housing space between the pump housing and the cover, an adjustment member housed in the housing space to adjust the amount of oil discharged from the oil pump rotor by being displaced due to a drive force while rotatably holding the oil pump rotor from an outer peripheral side, and a guide portion including a groove in the adjustment member and a pin on the pump housing that engage one another. Engagement of the pin and the groove guides displacement of the adjustment member relative to the pump housing. A seal structure on at least one of the pump housing and the cover seals the inside of the groove relative to the housing space by surrounding a movement trajectory of the groove relative to the pin. 1. A variable oil pump comprising:a pump housing;a cover that faces the pump housing;an oil pump rotor rotationally driven while being housed in a housing space between the pump housing and the cover;an adjustment member housed in the housing space and that adjusts an amount of oil discharged from the oil pump rotor by being displaced due to a drive force while rotatably holding the oil pump rotor from an outer peripheral side;a guide portion including a groove provided in the adjustment member and a pin provided on the pump housing and that engages with the groove, and the guide portion that guides relative displacement of the adjustment member with respect to the pump housing by engaging the groove and the pin with each other; anda seal structure provided on at least one of the pump housing and the cover and that seals an inside of the groove with respect to the housing space by surrounding a movement trajectory of the groove of the adjustment member relatively displaced with respect to the pin.2. The variable oil pump according to claim 1 , whereinthe seal structure is circumferentially provided on a region portion corresponding to the movement trajectory of ...

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Номер записи: 71
30-08-2018 дата публикации

VARIABLE OIL PUMP

Номер: US20180245589A1
Автор: Hirano Takashi, ISODA Atsuo, Sakai Takahiro
Принадлежит: AISIN SEIKI KABUSHIKI KAISHA

A variable oil pump includes a pump rotor housed in a housing and rotationally driven, an adjustment ring that adjusts an amount of oil discharged from the pump rotor by being displaced under hydraulic pressure supplied to a hydraulic chamber between the housing and the pump rotor in a state where the pump rotor is rotatably held from an outer peripheral side, and a vane provided in a portion where the adjustment ring and the housing face each other and that seals oil leakage to an outside of the hydraulic chamber. The adjustment ring includes a vane holding portion that holds the vane and an oil passage through which the hydraulic pressure in the hydraulic chamber is drawn into the vane holding portion. 1. A variable oil pump comprising:a pump housing;an oil pump rotor housed in the pump housing and rotationally driven;an adjustment member housed in the pump housing and that adjusts an amount of oil discharged from the oil pump rotor by being displaced under hydraulic pressure supplied to a hydraulic chamber between the pump housing and the oil pump rotor in a state where the oil pump rotor is rotatably held from an outer peripheral side;a seal member disposed in a portion where the adjustment member and the pump housing face each other and that seals oil leakage to an outside of the hydraulic chamber;a seal member holding portion provided in the adjustment member and that holds the seal member; andan oil passage provided in the adjustment member and through which the hydraulic pressure in the hydraulic chamber is drawn into the seal member holding portion.2. The variable oil pump according to claim 1 , whereinthe oil passage extends in a groove shape from a side of a tip of the seal member that slides with respect to an inner surface of the pump housing toward a root of the seal member held by the seal member holding portion.3. The variable oil pump according to claim 1 , whereinthe seal member holding portion includes a foreign matter storage portion formed in a ...

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Номер записи: 72
17-09-2015 дата публикации

VARIABLE DISPLACEMENT VANE PUMP

Номер: US20150260186A1
Автор: Kido Yoshiaki
Принадлежит: Hitachi Automotive Systems Steering, Ltd.

A variable displacement vane pump includes first and second sealing grooves formed on an intake port side and separated away from each other in a circumferential direction; first and second sealing members provided in the first and second sealing grooves; a first fluid-pressure chamber formed on a side on which a volume thereof decreases when the cam ring moves to a side on which an eccentricity of the cam ring increases; and a second fluid-pressure chamber formed on a side on which a volume thereof increases when the cam ring moves to a side on which the eccentricity of the cam ring increases; and a control valve configured to control the pressure in the first or second fluid-pressure chamber. 1. A variable displacement vane pump , comprising:a pump housing including a pump-element housing portion;a driving shaft rotatably supported by the pump housing;a rotor provided inside the pump housing so as to be rotationally driven by the driving shaft, the rotor including a plurality of slots arranged in a circumferential direction, which is a direction about a rotation axis of the driving shaft;a plurality of vanes provided in the plurality of slots so as to be projectable therefrom and retractable therein;a cam ring formed so as to have an annular shape, the cam ring being provided so as to be movable inside the pump-element housing portion, the cam ring forming a plurality of pump chambers on an inner circumferential side in cooperation with the rotor and the plurality of vanes;an intake port formed in the pump housing, the intake port having an opening in an intake region, in which volumes of the plurality of pump chambers increase along with the rotation of the rotor;a delivery port formed in the pump housing, the delivery port having an opening in a delivery region, in which the volumes of the plurality of pump chambers decrease along with the rotation of the rotor;a pair of sealing grooves formed on the pump-element housing portion so as to have openings oriented ...

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Номер записи: 73
23-09-2021 дата публикации

REDUCED-NOISE ROTARY PUMP

Номер: US20210293238A1
Автор: Eisele Fabian, Jäggle Gerd, Pekrul Igor, Peters Sven, Wahl Thomas
Принадлежит:

A rotary pump, preferably a vane cell pump or a pendulum slider pump, includes a stator and a rotor which rotates about a rotational axis within the stator. The rotor includes multiple delivery elements which move radially in relation to the rotational axis, and two adjacent delivery elements limit a delivery cell together with the outer surface area of the rotor and the inner surface area of the stator. At least two delivery cells, preferably two adjacent delivery cells, exhibiting a first maximum cell volume form a first delivery cell group and at least two other delivery cells, preferably two other adjacent delivery cells, exhibiting a second maximum cell volume form a second delivery cell group. The first maximum cell volume of the delivery cells of the first delivery cell group is larger than the second maximum cell volume of the delivery cells of the second delivery cell group. 1. A rotary pump comprising:(a) a stator and(b) a rotor which can rotate about a rotational axis within the stator, wherein(c) the rotor comprises multiple delivery elements which can move radially in relation to the rotational axis, and(d) two adjacent delivery elements limit a delivery cell together with the outer surface area of the rotor and the inner surface area of the stator, wherein(e) at least two delivery cells, preferably two adjacent delivery cells, which exhibit a first maximum cell volume form a first delivery cell group and(f) at least two other delivery cells, preferably two other adjacent delivery cells, which exhibit a second maximum cell volume form a second delivery cell group,wherein(g) the first maximum cell volume of the delivery cells of the first delivery cell group is larger than the second maximum cell volume of the delivery cells of the second delivery cell group.2. The rotary pump according to claim 1 , wherein the delivery cells of the first delivery cell group exhibit an at least substantially identical first maximum cell volume claim 1 , and the delivery ...

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Номер записи: 74
24-09-2015 дата публикации

VARIABLE DISPLACEMENT VANE PUMP

Номер: US20150267700A1
Автор: AKATSUKA Koichiro, Fujita Tomoyuki, KATO Fumiyasu, SUGIHARA Masamichi
Принадлежит: KAYABA INDUSTRY CO., LTD.

A variable displacement vane pump includes: a rotor to be rotatively driven; a plurality of vanes slidably housed in the rotor; a cam ring allowed of eccentric with respect to a center of the rotor, the cam ring having an inner circumferential cam surface in sliding contact with a distal end portion of the vane; a pump chamber defined by the adjacent vanes, the rotor, and the cam ring; a suction port to guide hydraulic fluid to be suctioned to the pump chamber; and a discharge port to guide hydraulic fluid to be discharged from the pump chamber. An outer circumference of an opening portion of the suction port is formed so as to be positioned along the inner circumferential cam surface of the cam ring or at an outside of the inner circumferential cam surface regardless of eccentricity of the cam ring with respect to the rotor. 1. A variable displacement vane pump used as a fluid pressure supply source , comprising:a rotor configured to be rotatively driven;a plurality of vanes configured to be slidably housed in the rotor;a cam ring configured to be capable of eccentric with respect to a center of the rotor, the cam ring having an inner circumferential cam surface in sliding contact with a distal end portion of the vane;a pump chamber defined by the adjacent vanes, the rotor, and the cam ring;a suction port configured to guide hydraulic fluid to be suctioned to the pump chamber; anda discharge port configured to guide hydraulic fluid to be discharged from the pump chamber,wherein an outer circumference of an opening portion of the suction port is formed so as to be positioned along the inner circumferential cam surface of the cam ring or at an outside of the inner circumferential cam surface regardless of eccentricity of the cam ring with respect to the rotor.2. The variable displacement vane pump according to claim 1 ,wherein an inner circumference of the opening portion of the suction port is formed so as to gradually approach the outer circumference of the opening ...

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Номер записи: 75
13-08-2020 дата публикации

VARIABLE DISPLACEMENT LUBRICANT VANE PUMP

Номер: US20200256335A1
Автор: Cuneo Carmine
Принадлежит: PIERBURG PUMP TECHNOLOGY GMBH

A variable lubricant vane pump includes a pump housing, a shiftable control ring, a rotatable pump rotor, a control ring preload spring which preloads and pushes the control ring into a high eccentricity direction, a hydraulic safety control chamber which moves the control ring against the control ring preload spring and which is directly and constantly pressurized with a pressurized lubricant having a pump outlet pressure, a separate hydraulic adjustment control chamber which moves the control ring against the control ring preload spring and which is selectively pressurized with the pressurized lubricant having an over-atmospheric pressure, an electric adjustment valve which selectively directs the pressurized lubricant having the over-atmospheric pressure to the separate hydraulic adjustment control chamber, and a calibrated hydraulic channel which directly connects the separate hydraulic adjustment control chamber with atmospheric pressure. An effective hydraulic cross-sectional area of the calibrated hydraulic channel is less than 5.0 mm. 110-. (canceled)11. A variable lubricant vane pump for providing a pressurized lubricant with a pump outlet pressure , the variable lubricant vane pump comprising:a static pump housing;a control ring configured to be shiftable;a pump rotor configured to rotate, the pump rotor comprising a plurality of rotor vanes which are configured to rotate within the control ring, the control ring being configured to be shiftable with respect to the pump rotor to vary an eccentricity of the control ring with respect to the pump rotor so as to control a volumetric pump performance;a control ring preload spring which is configured to preload and to push the control ring into a high eccentricity direction;a hydraulic safety control chamber which is configured to cause the control ring to move against the control ring preload spring and which is directly and constantly pressurized with the pressurized lubricant having the pump outlet pressure;a ...

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Номер записи: 76
08-10-2015 дата публикации

Noise-reduction mechanism for oil pump

Номер: US20150285250A1
Автор: Abdelkrim Zouani, Abhijyoth Vempati, Ahsanul Karim
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

A noise-reduction mechanism is coupled to a portion of an oil-pump system and includes various tunable components that are configurable to affect specific frequency ranges of noise within the system. The mechanism includes a series of channels that are coupled to a portion of the oil-pump system (e.g., outlet tube) and are coupled to a reservoir.

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Номер записи: 77
18-11-2021 дата публикации

Dual Drive Vane Pump

Номер: US20210355941A1
Автор: Matthew Williamson
Принадлежит: Hanon Systems EFP Canada Ltd

A fluid pumping system for a vehicle having an internal combustion engine comprises a housing, an electric motor, a rotatable first input adapted to be driven by the internal combustion engine, a rotatable second input driven by the electric motor, and a pump. The pump includes a drum selectively rotated about a drum axis of rotation by one of the first input and the second input, and a pump rotor selectively rotated by the other of the first input and the second input. The drum includes a cam ring having a cavity in receipt of the pump rotor. The drum includes a first fluid inlet port and a second fluid inlet port on opposite sides of the drum such that fluid entering the cavity through the first and second fluid ports flows axially in a direction parallel to the drum axis of rotation. The drum includes a radially extending outlet port such that pumped fluid flows radially out of the cavity. The housing contains the electric motor and the pump.

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Номер записи: 78
12-09-2019 дата публикации

PUMP DEVICE

Номер: US20190277280A1
Автор: Sakai Takahiro, SHIMATANI Kazuyoshi
Принадлежит: AISIN SEIKI KABUSHIKI KAISHA

A pump device includes: a variable capacity-type pump unit configured to include an inner rotor having a plurality of external teeth , an outer rotor having a plurality of internal teeth meshing with a portion of the plurality of external teeth of the inner rotor, a housing, a suction port and a discharge port, an adjustment member adjusting a discharge pressure of a fluid, a biasing mechanism biasing the adjustment member, a control flow passage causing a fluid pressure from the discharge port to be applied to the adjustment member, a solenoid valve adjusting the fluid pressure applied to the adjustment member, a bypass flow passage, and a relief valve; a rotation speed sensor measuring a rotation speed of a drive source; and a control unit controlling the solenoid valve. 1. A pump device comprising: an inner rotor having a plurality of external teeth and rotatable around a first shaft core,', 'an outer rotor having a plurality of internal teeth meshing with a portion of the plurality of external teeth of the inner rotor and rotatable around a second shaft core,', 'a housing accommodating the inner rotor and the outer rotor,', 'a suction port and a discharge port which are formed in the housing,', 'an adjustment member rotatably supporting the outer rotor and adjusting a discharge pressure of a fluid in the discharge port by changing a positional relationship between the first shaft core and the second shaft core,', 'a biasing mechanism biasing the adjustment member in a direction in which the discharge pressure is increased or decreased,', 'a control flow passage causing a fluid pressure from the discharge port to be applied to the adjustment member to apply a pressure to the adjustment member against a biasing force of the biasing mechanism,', 'a solenoid valve interposed in the control flow passage in order to adjust the fluid pressure to be applied to the adjustment member,', 'a bypass flow passage causing the fluid of the discharge port to flow into the ...

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Номер записи: 79
11-10-2018 дата публикации

ENGINE OIL PUMP

Номер: US20180291894A1
Автор: ABBASOV Lenar, CHANG Fred, JANIWARAD Raghavendra, KUMAR R N Ashwin, MCCLINTOCK Steven, MOHAPATRA Subhransu Sekhar, Parameshwara Arunachala
Принадлежит:

A variable displacement pump, and methods of manufacturing such systems are provided. The variable displacement pump can include a housing defining an inlet and an outlet, a rotor positioned between the inlet and the outlet, the rotor being configured to pump a liquid between the inlet and the outlet, and the rotor having a multiple of vane slots, a multiple of vanes, each disposed in a respective one of the multiple of vane slots, and a pendulum positioned between the rotor and the housing, the pendulum comprising a pendulum body and a stiffener, wherein the stiffener is located at least partially within the pendulum body, and wherein the rotor, the multiple of vanes, and the pendulum body are made of a polymer. 1. A variable displacement pump , comprising:a housing defining an upper surface, a lower surface opposite the upper surface, and an outer surface extending between the upper surface and the lower surface, the housing including an inlet and an outlet, the housing further defining an opening sized to receive a shaft;a cover coupled to the upper surface of the housing, the cover defining an opening sized to receive the shaft;a rotor positioned in the housing between the inlet and the outlet, the rotor defining an opening sized to receive the shaft, and the rotor being configured to pump a liquid between the inlet and the outlet, wherein the rotor defines a multiple of vane slots;a multiple of vanes, each disposed in a respective one of the multiple of vane slots; anda pendulum positioned between the rotor and the housing, the pendulum comprising a pendulum body and a stiffener, wherein the stiffener is located at least partially within the pendulum body, and wherein the rotor, the multiple of vanes, and the pendulum body are made of a polymer.2. The variable displacement pump of claim 1 , wherein the stiffener is insert molded into the pendulum body claim 1 , and wherein the stiffener is made of metal.3. The variable displacement pump of claim 1 , wherein the ...

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Номер записи: 80
10-09-2020 дата публикации

PUMP DEVICE

Номер: US20200284254A1
Автор: SUNAGA Yukichi
Принадлежит: Hitachi Automotive Systems, Ltd.

A groove () extending from a start point of a discharge port () in a direction opposite to rotation direction of a vane () is formed. A first end portion (E) of this groove is connected to the start point of the discharge port (). When a front-side vane () in a rotation direction of a driving shaft () is positioned at the start point of the discharge port (), a second end portion (S) of the groove is positioned at a rear side in the rotation direction of the driving shaft () with respect to a rear-side vane (), and communicates with a suction port (). A part of working fluid in a front-side pump chamber () can be introduced into a rear-side pump chamber () that communicates with the suction port (). Excessive pressure increase of the front-side pump chamber () can be lessened, thereby suppressing pulsation phenomenon. 1. A pump device comprising:a driving shaft; the rotor is driven and rotated by the driving shaft, and has a plurality of slits in a circumferential direction of a rotation axis of the driving shaft,', 'the plurality of vanes are movably set in the respective slits, and', 'the cam ring is formed into a ring shape, and forms a plurality of pump chambers by the rotor and the plurality of vanes; and, 'a pump element having a rotor, a plurality of vanes and a cam ring, wherein'} the pump element accommodating space accommodates therein the pump element,', 'the suction port faces and opens to a suction region where volumes of the pump chambers increase according to rotation of the driving shaft,', 'the suction passage is connected to the suction port, and supplies working fluid to the suction port according to the rotation of the driving shaft,', 'the discharge port faces and opens to a discharge region where the volumes of the pump chambers decrease according to the rotation of the driving shaft,', 'the discharge passage is connected to the discharge port, and discharges the working fluid from the discharge port according to the rotation of the driving ...

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Номер записи: 81
10-09-2020 дата публикации

PUMP DEVICE

Номер: US20200284255A1
Автор: Muramatsu Satoshi, NAKAZONO Tomohiko, Uchida Yukio
Принадлежит: Hitachi Automotive Systems, Ltd.

A pump device includes: a drive shaft; a pump element; a pump housing including; a pump element receiving space, first and second bearing receiving spaces, a suction passage, a discharge passage, a return passage, and a seal receiving space, a first bearing including a first lubrication groove, received within the first bearing receiving space, and supporting the drive shaft; a second bearing which includes a second lubrication groove having a sectional area that is perpendicular to the rotation axis, and that is greater than a sectional area of the first bearing that is perpendicular to the rotation axis, which is received within the second bearing receiving space, and which supports the drive shaft; and a seal member provided within the seal receiving space, and arranged to seal between the drive shaft and the pump housing. 1. A pump device comprising:a drive shaft;a pump element arranged to be driven and rotated by the drive shaft; a pump element receiving space receiving the pump element therein,', 'a first bearing receiving space provided on a first side of the pump element receiving space in a direction along a rotation axis of the drive shaft,', 'a second bearing receiving space provided on a second side of the pump element receiving space in the direction along the rotation axis of the drive shaft,', 'a suction passage connected to the pump element receiving space, and arranged to supply a hydraulic fluid to the pump element receiving space in accordance with the rotation of the drive shaft,', 'a discharge passage connected to the pump element receiving space, and arranged to discharge the hydraulic fluid from the pump element receiving space in accordance with the rotation of the drive shaft,', 'a return passage connecting the second bearing receiving space and the suction passage, and', 'a seal receiving space provided outside the first bearing receiving space in a radial direction around the rotation axis,, 'a pump housing including;'}a first bearing ...

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Номер записи: 82
26-10-2017 дата публикации

Multiple Pressure Variable Displacement Pump with Mechanical Control

Номер: US20170306948A1
Автор: De Andrade Filho Ayres Pinto, De Carvalho Meira João Luiz, Ribeiro Eduardo Gubbiotti
Принадлежит: Melling Tool Company

A variable displacement vane pump that includes a biasing assembly that applies a first biasing force to a pump control ring when the pump control ring is located a first position and a second position and applies a second biasing force when the pump control ring is located between the second position and a third position. The first position of the pump control ring corresponds to a maximum volumetric capacity of the pump, the second position corresponds to an intermediary volumetric capacity of the pump, and the third position corresponds to a minimum volumetric capacity of the pump. Fluid pressure within a control chamber urges the pump control ring toward the third position. 1. A variable displacement vane pump having a housing with a pump chamber , the pump chamber having a fluid inlet , a fluid outlet , a pump control ring , and a vane pump rotor , the pump control ring disposed within the housing for altering the displacement of the pump by rotating between a first position that corresponds to a maximum volumetric capacity of the pump , a second position that corresponds to an intermediary volumetric capacity of the pump , and a third position that corresponds to a minimum volumetric capacity of the pump , the vane pump rotor rotatably mounted within the pump control ring and having a plurality of slidably mounted vanes engaging an inside surface of the pump control ring , the vane pump rotor having an axis of rotation eccentric from a center of the pump control ring , the vane pump rotor rotating to pressurize fluid as the fluid moves from the fluid inlet to the fluid outlet , comprising:a biasing assembly for urging the pump control ring toward the first position, wherein the biasing assembly applies a first biasing force to the pump control ring when the pump control ring is located between the first position and the second position and applies a second biasing force to the pump control ring when the pump control ring is located between the second position ...

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Номер записи: 83
24-09-2020 дата публикации

VARIABLE LUBRICANT VANE PUMP

Номер: US20200300092A1
Автор: LAZZERINI MASSIMILIANO
Принадлежит: PIERBURG PUMP TECHNOLOGY GMBH

A vane pump for providing a pressurized lubricant includes a static pump housing defining an inlet and an outlet, a shiftable control ring with at least one slide support surface, a pump rotor with rotor vanes which rotate within the control ring, and metal slide support pad(s). The control ring shifts with respect to the pump rotor to vary an eccentricity and to thereby control a volumetric pump performance. The pump housing comprises a static control ring housing body which radially surrounds and supports the control ring, and two static pump housing lids which axially support the control ring housing body and the control ring. The control ring housing body is made of plastic. The metal slide support pad(s) is fixed to the static control ring housing body and, together with the at least one slide support surface, provides a friction bearing for the control ring. 16-. (canceled)7. A variable lubricant vane pump for providing a pressurized lubricant , the variable lubricant vane pump comprising:a static pump housing which defines a pump inlet and a pump outlet;a shiftable control ring comprising at least one slide support surface;a rotatable pump rotor comprising a plurality of rotor vanes which are configured to rotate within the shiftable control ring; andat least one metal slide support pad,wherein,the shiftable control ring is configured to be shiftable with respect to the rotatable pump rotor so as to vary an eccentricity of the shiftable control ring with respect to the rotatable pump rotor so as to control a volumetric pump performance,the static pump housing comprises,a static control ring housing body which is configured to radially surround and tosupport the shiftable control ring, andtwo static pump housing lids which are configured to axially support the static controlring housing body and the shiftable control ring,at least the static control ring housing body is made of a plastic, andthe at least one metal slide support pad is fixed to the static ...

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Номер записи: 84
12-11-2015 дата публикации

Method for producing a pendulum of a pendulum slide cell pump

Номер: US20150322943A1
Автор: André Maeder, Christian Richter, Marco Kirchner
Принадлежит: MAHLE International GmbH

A method for producing a pendulum of a pendulum slide cell pump may include providing a prefabricated pendulum body and performing a post-machining operation on the pendulum body only at a plurality of contact locations at which the pendulum body contacts at least one of an inner rotor and an outer rotor of the pendulum slide cell pump.

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Номер записи: 85
12-11-2015 дата публикации

VARIABLE DISPLACEMENT VANE PUMP AND METHOD OF REGULATING THE DISPLACEMENT THEREOF

Номер: US20150322944A1
Автор: Cadeddu Leonardo, CALDERONI Matteo
Принадлежит:

A variable displacement rotary vane pump for fluids is provided where displacement regulation is achieved thanks to the variation of the relative eccentricity between a regulation ring () in which a rotor () is arranged and the rotor itself. In a region of engagement between the external surface (A) of the regulation ring () and the internal surface (A) of a chamber () inside which the regulation ring () moves, a plurality of rolling elements (), mounted in fixed position, is provided. The rolling elements () are provided only over a portion of such a region of engagement, including a zone (S) where a resultant of mechanical and fluidic forces generated in the pump during the regulation acts. A method of regulating the displacement of such a pump is also disclosed. 1. A variable displacement rotary vane pump for fluids , comprising:{'b': 13', '11', '1, 'a rotor () arranged to eccentrically rotate within a regulation ring () with a relative eccentricity which varies depending on operating conditions of the pump ();'}{'b': 17', '18', '11', '40', '10, 'means (, ) for moving the regulation ring () in a chamber () formed in a pump body () in order to vary said relative eccentricity, and hence the displacement of the pump, as said operating conditions vary; and'}{'b': 25', '11', '11', '40', '40, 'a plurality of rolling elements () interposed between an external surface (A) of the regulation ring () and an internal surface (A) of the chamber ();'}characterised in that:{'b': 25', '26', '11', '11', '40', '40', '1', '2, 'the rolling elements () are mounted in a supporting cage () and are provided only over a portion of a region of engagement between the external surface (A) of the regulation ring () and the internal surface (A) of the chamber (), said portion including a zone (S) where a resultant (SV, SV) of mechanical and fluidic forces generated in the pump during the regulation acts; and'}{'b': 25', '26', '11', '40', '11', '40', '11', '25', '26', '11, 'the rolling ...

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Номер записи: 86
02-11-2017 дата публикации

VARIABLE CAPACITY VANE PUMP

Номер: US20170314555A1
Автор: IMANAGA Hiroki
Принадлежит: Hitachi Automotive Systems, Ltd.

Variable capacity vane pump supplying working fluid to power steering device of vehicle has pump housing formed from bottomed cylindrical-shaped front housing and rear housing closing the front housing, pump element accommodated in pump housing, communicating with inlet passage and with outlet passage and sucking and discharging working fluid, and flow amount control valve controlling an amount of working fluid discharged by pump element. Pressure-sensitive valve which changes a flow passage cross-sectional area of the outlet passage so that the discharge amount of the pump element is increased with increase in load pressure of power steering device, is set at some midpoint of the outlet passage and at bottom wall portion of front housing. It is therefore possible to suppress increase in size of device while reducing energy loss when variable capacity vane pump is mounted in power steering device. 1. A variable capacity vane pump supplying working fluid to a power steering device of a vehicle , comprising:a pump housing formed from a first housing having a cylindrical portion and a bottom wall portion provided so as to close one end opening of the cylindrical portion and a second housing provided so as to close the other end opening of the cylindrical portion, the pump housing forming a pump element accommodation space inside the pump housing between the first and second housings;a drive shaft inserted and rotatably supported in the pump housing;a rotor accommodated in the pump element accommodation space and driven and rotated by the drive shaft, the rotor being provided with a plurality of slits in a radial direction of the rotor;vanes provided in the slits so as to extend and retract;a ring-shaped cam ring movably provided in the pump element accommodation space and forming a plurality of pump chambers together with the rotor and the vanes;an inlet port provided in the pump housing and opening to a suction section where a volume of each of the pump chambers ...

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Номер записи: 87
19-11-2015 дата публикации

LUBRICANT VANE PUMP

Номер: US20150330388A1
Автор: CELATA NICOLA, MORIGLIA MAURIZIO, SIMONI MIRCO
Принадлежит:

A lubricant vane pump for providing a pressurized lubricant for an internal combustion engine includes a pump housing enclosing a pumping cavity comprising a charge zone and a discharge zone. A shiftable control ring envelops the pumping cavity. A pump rotor comprising vanes divides the pumping cavity into pumping chambers. The pump rotor is radially slidable and rotates in the control ring from the charge zone to the discharge zone. A spring chamber comprises a pretensioning element which pushes the control ring to a high pumping volume direction. A control chamber is configured so that a lubricant pressure in the control chamber moves the control ring to a low pumping volume direction against a force of the pretensioning element. A pumping cavity outlet port is connected to the control chamber. A pressure equilibration channel drains the lubricant from the pumping chamber in the discharge zone into the spring chamber.

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Номер записи: 88
09-11-2017 дата публикации

VARIABLE DISPLACEMENT VANE PUMP

Номер: US20170321696A1
Автор: NAGASAKA Ryouichi, SUO Shiro
Принадлежит: KYB Corporation

A variable displacement vane pump includes: a restrictor configured to impart resistance to flow of working fluid discharged from the pump chambers; a control valve configured to introduce the working fluid which is discharged from the pump chambers to the first fluid pressure chamber as a differential pressure between upstream and downstream of the restrictor is increased, the control valve being configured to discharge the working fluid in the first fluid pressure chamber as the differential pressure between upstream and downstream of the restrictor is reduced; a suction passage configured to guide the working fluid to be sucked into the pump chambers, the suction passage being configured to always communicate with the second fluid pressure chamber; and a guiding passage configured to allow communication between the control valve and the second fluid pressure chamber, the guiding passage being configured to guide the working fluid, which is discharged from the first fluid pressure chamber to the control valve, to the second fluid pressure chamber. 1. A variable displacement vane pump comprising:a rotor linked to a driving shaft;a plurality of vanes provided so as to be movable in a reciprocating manner in the radial direction with respect to the rotor;a cam ring in which tip-end portions of the vanes are in sliding contact with a cam face on an inner circumference of the cam ring with rotation of the rotor arranged in the cam ring, the cam ring being capable of being made eccentric with respect to the rotor;pump chambers defined between the rotor and the cam ring by being partitioned by the plurality of vanes;a first fluid pressure chamber and a second fluid pressure chamber defined in an accommodating space on an outer circumferential side of the cam ring;a biasing member configured to always bias the cam ring in a direction in which an amount of eccentricity is increased;a restrictor configured to impart resistance to flow of working fluid discharged from the ...

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Номер записи: 89
01-10-2020 дата публикации

VARIABLE DISPLACEMENT OIL PUMP SLIDE WITH BOW SPRING

Номер: US20200309120A1
Автор: Bennett, McGowan Sean, SR. Andy
Принадлежит:

An automobile vehicle variable displacement pump includes a pump body having a pump shaft extending through the pump body. A rotor is connected to the pump shaft and co-rotates with the pump shaft. The rotor has multiple radially outwardly directed slots. A vane support ring supports multiple vanes, the vanes individually slidably received in one of the slots of the rotor. A slide is rotatably connected to the pump body having the rotor and the vane support ring positioned within an inner wall of the slide. A bow spring plate defining a biasing member directly contacts the slide to bias the slide to rotate about an arc of curvature. 1. An automobile vehicle variable displacement pump , comprising:a pump body having a pump shaft extending through the pump body, the pump shaft rotating with respect to a longitudinal axis of the pump shaft;a slide rotatably connected to the pump body; anda bow spring plate defining a biasing member directly contacting the slide to bias the slide to rotate in an arc of curvature within the pump body.2. The automobile vehicle variable displacement pump of claim 1 , further including a dowel pin positioned within a dowel pin cavity of the slide claim 1 , the dowel pin rotatably connecting the slide to an inner wall of the pump body.3. The automobile vehicle variable displacement pump of claim 2 , wherein the bow spring plate is anchored at an end of the bow spring plate between the dowel pin and the pump body.4. The automobile vehicle variable displacement pump of claim 2 , wherein the slide includes a seal positioned within a seal cavity and wherein a load force generated by the bow spring plate is equal to an oppositely directed pressure force acting against a surface of the slide between the seal cavity and the dowel pin cavity.5. The automobile vehicle variable displacement pump of claim 1 , further including a rotor connected to the pump shaft and co-rotating with the pump shaft claim 1 , the rotor having multiple radially outwardly ...

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Номер записи: 90
15-10-2020 дата публикации

VARIABLE VOLUME CHAMBER DEVICE

Номер: US20200325895A1
Автор: Blom Roy A., Dalmas
Принадлежит: Quest Engines, LLC

A variable volume chamber device is disclosed. The chambers may be defined by the space between four pivotally connected vanes contained within a housing. The vanes may be connected so as to create a sealed interior chamber that may be used as a combustion chamber in an internal combustion engine, or as a pumping chamber in a pump or compressor. The four-vane assembly may also form additional variable volume chambers between the vanes and a surrounding structure. The plurality of variable volume chambers may be interconnected to progressively act on a working fluid. 144-. (canceled)45. A variable volume chamber device comprising:a housing;an assembly including a first vane, a second vane, a third vane, and a fourth vane disposed within said housing,wherein the first vane is pivotally connected to the second vane at a fixed location relative to the housing,wherein the second vane is pivotally connected to the third vane,wherein the third vane is pivotally connected to the fourth vane,wherein the fourth vane is pivotally connected to the first vane, andwherein said assembly defines a variable volume chamber.46. The variable volume chamber device of further comprising inlet and outlet ports provided in said housing wherein the locations of said inlet and outlet ports are configured to permit the device to operate as a four-cycle internal combustion engine.47. The variable volume chamber device of further comprising inlet and outlet ports provided in said housing wherein the locations of said inlet and outlet ports are configured to permit the device to operate as a two-cycle internal combustion engine.48. The variable volume chamber device of claim 45 , further comprising:an inlet port provided in the housing communicating with the variable volume chamber;a first rotary valve disposed in the housing adjacent to the inlet port;an outlet port provided in the housing communicating with the variable volume chamber; anda second rotary valve disposed in the housing adjacent ...

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Номер записи: 91
01-12-2016 дата публикации

OIL PUMP DEVICE

Номер: US20160348673A1
Автор: HONDA Kenta, KOGUCHI Tomohiro
Принадлежит: MAZDA MOTOR CORPORATION

An oil pump device includes an oil pump () and an electrically operated control valve (). The valve adjusts hydraulic pressures to be applied to a decrease-side control pressure chamber (A) for causing a pump casing () to swing in the discharge amount decrease direction and an increase-side control pressure chamber (B) for causing the pump casing to swing in the discharge amount increase direction so as to hold the pump casing at a predetermined approximately intermediate position between the maximum swing position in the discharge amount decrease direction and the maximum swing position in the discharge amount increase direction by balancing the urging forces of a decrease-side return spring () for urging the pump casing in the discharge amount decrease direction and an increase-side return spring () for urging the pump casing in the discharge amount increase direction when supply of current to the valve is stopped. 1. An oil pump device for an engine , comprising:a variable-capacity oil pump; andan electrically operated control valve which changes a discharge amount of oil from the oil pump, a pump body provided with an oil suction port and an oil discharge port;', 'a pump element disposed inside the pump body, and configured to rotate by a driving force of a crankshaft;', 'a pump casing disposed inside the pump body and around the pump element, the pump casing forming a plurality of pump chambers by cooperation with the pump element, the pump chambers communicating with the suction port and with the discharge port one after another, as the pump element is rotated, the pump casing being supported by the pump body to swing in a discharge amount decrease direction and in a discharge amount increase direction, the discharge amount decrease direction being such that a capacity of the pump chamber located at a position close to the suction port increases and a capacity of the pump chamber located at a position close to the discharge port decreases, the discharge amount ...

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Номер записи: 92
29-10-2020 дата публикации

Vane Pump

Номер: US20200340473A1
Автор: Pöhnlein Florian
Принадлежит:

A vane pump () for an automatic transmission includes a suction-side behind-vane pressure duct () and a pressure-side behind-vane pressure duct (). The suction-side behind-vane pressure duct () is connected to the pressure side () of the vane pump (). A valve device () is connected to the pressure-side behind-vane pressure duct (). During operation of the vane pump (), a pressure-side behind-vane pressure (p DH) can be set in the pressure-side behind-vane pressure duct () with the valve device (). 121-: (canceled)22101. A vane pump () for an automatic transmission , comprising:{'b': 112', '116', '101, 'a suction-side behind-vane pressure duct () connected to a pressure side () of the vane pump ();'}{'b': '111', 'a pressure-side behind-vane pressure duct (); and'}{'b': 113', '114', '213', '214', '313', '314', '413', '414', '111, 'a valve unit (, , , , , , , ) connected to the pressure-side behind-vane pressure duct (),'}{'b': 101', '111', '211', '311', '411', '113', '114', '213', '214', '313', '314', '413', '414, 'wherein, during the operation of the vane pump (), a level of a pressure-side behind-vane pressure (pDH) in the pressure-side behind-vane pressure duct (, , , ) is adjustable with the valve unit (, , , , , , , ).'}23113114111112. The vane pump of claim 22 , wherein the valve unit ( claim 22 , ) is arranged between the pressure-side behind-vane pressure duct () and the suction-side behind-vane pressure duct ().24113114. The vane pump of claim 22 , wherein the valve unit ( claim 22 , ) has a variable hydraulic resistance.251131143334. The vane pump of claim 24 , wherein the valve unit is an adjustable throttle valve ( claim 24 , ) or as an adjustable orifice ( claim 24 , ).26213513213513213513211511212512. The vane pump of claim 24 , wherein the valve unit is a pressure limiting valve ( claim 24 , ) claim 24 , and the pressure limiting valve ( claim 24 , ) is arranged such fluid is flowable through the pressure limiting valve ( claim 24 , ) from the pressure- ...

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Номер записи: 93
29-10-2020 дата публикации

VANE CELL PUMP COMPRISING A PRESSURE EQUALIZATION CONNECTION

Номер: US20200340474A1
Автор: Iser Tobias
Принадлежит:

A vane cell pump, including: a delivery chamber having an inlet and an outlet; a rotor which is arranged in the delivery chamber and has a rotor body and vanes which are accommodated by the rotor body such that they can be shifted radially; an end-facing wall which delineates the delivery chamber on an axial end-facing side; and a supporting element which is arranged axially between the end-facing wall and the rotor body and which supports the vanes at their radially inner vane ends, wherein the rotor body, the supporting element and each two vanes which are adjacent in the circumferential direction of the rotor form chambers, the volume of which varies when the rotor is rotating. A pressure equalization connection fluidically connects at least two of the chambers to each other. 1. A vane cell pump , comprising:a. a delivery chamber comprising an inlet and an outlet;b. a rotor which is arranged in the delivery chamber and comprises a rotor body and vanes which are accommodated by the rotor body such that they can be shifted radially;c. an end-facing wall which delineates the delivery chamber on an axial end-facing side;d. a supporting element which is arranged axially between the end-facing wall and the rotor body and which supports the vanes at their radially inner vane ends,e. wherein the rotor body, the supporting element and each two vanes which are adjacent in the circumferential direction of the rotor form chambers, the volume of which varies when the rotor is rotating, andf. a pressure equalization connection which connects at least two of the chambers to each other fluidically.2. The vane cell pump according to claim 1 , wherein the rotor body and the end-facing wall form an axial sealing gap claim 1 , and wherein the pressure equalization connection is formed radially inside the axial sealing gap.3. The vane cell pump according to claim 1 , wherein the pressure equalization connection comprises at least one groove in the end-facing wall and/or at least one ...

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Номер записи: 94
24-12-2015 дата публикации

Vane Pump With Multiple Control Chambers

Номер: US20150369240A1
Автор: Shulver David R., Tanasuca Cezar, Williamson Matthew
Принадлежит: MAGNA POWERTRAIN INC.

A variable capacity vane pump for an automobile includes a pump control ring positioned within the housing to move about a pivot. A rotor is positioned within a cavity of the control ring such that a position of the control ring determines an offset between a center of the cavity and an axis of rotation of the rotor. A first control chamber is provided between the pump housing and a first outer surface of the control ring. The first outer surface is positioned on an opposite side of the control ring as the working fluid chambers within the cavity. A second control chamber is provided between the pump housing and a second outer surface of the control ring. A return spring biases the control ring toward a position of maximum volumetric capacity against the forces created by the pressurized fluid within the first and second control chambers. 1. A variable capacity vane pump for an automobile including a drivetrain in receipt of a fluid pressurized by the pump , the pump comprising:a pump housing;a pump control ring including a cavity and positioned within the housing to move about a pivot;a vane pump rotor positioned within the cavity of the pump control ring, wherein a position of the pump control ring determines an offset between a center of the pump control ring cavity and an axis of rotation of the vane pump rotor;vanes being driven by the rotor and engaging a surface of the pump control ring that surrounds the cavity, the vanes and the surface at least partially defining working fluid chambers;a first control chamber between the pump housing and a first outer surface of the pump control ring, the first outer surface of the pump control ring being positioned on an opposite side of the pump control ring as the working fluid chambers, the first control chamber operable to receive pressurized fluid to create a force to move the pump control ring to reduce a volumetric capacity of the pump;a second control chamber between the pump housing and a second outer surface of ...

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Номер записи: 95
05-11-2020 дата публикации

VANE PUMP

Номер: US20200347844A1
Автор: AKATSUKA Koichiro, KATO Fumiyasu
Принадлежит: KYB Corporation

A vane pump includes a rotor having slits, vanes received in the slits, a cam ring having an inner circumference cam face with which the vanes are brought into sliding contact, side members, pump chamber formed by the rotor, the cam ring, adjacent vanes, and back pressure chambers formed in the slits by the vanes. In the vane pump, the side members are provided with back pressure opening portions opening at sliding-contact surfaces in sliding contact with the rotor, the back pressure opening portions being configured to communicate with the back pressure chambers, and protruding opening portions protruding along the rotating direction of the rotor from end portions of the back pressure opening portions on the communication-finishing side. And inner-side inner circumferential surfaces of the protruding opening portions are respectively connected to inner-side inner circumferential surfaces of the back pressure opening portions. 1. A vane pump comprising:a rotor having a plurality of slits formed in a radiating pattern, the rotor being rotationally driven;a plurality of vanes received in the slits in a freely slidable manner;a cam ring having an inner circumference cam face with which tip end portions of the vanes are brought into sliding contact;a side member brought into contact with one-side surfaces of the rotor and the cam ring;pump chambers formed by the rotor, the cam ring, and adjacent vanes; andback pressure chambers formed in the slits by base-end portions of the vanes, whereinthe side member is provided with:a back pressure opening portion opening at a sliding-contact surface in sliding contact with the rotor, the back pressure opening portion being configured to communicate with the back pressure chambers; anda protruding opening portion protruding along a rotating direction of the rotor from an end portion of the back pressure opening portion on a communication-finishing side, where communication between the back pressure opening portion and the back ...

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Номер записи: 96
27-12-2018 дата публикации

WATER PUMP

Номер: US20180372093A1
Автор: LO BIUNDO Giuseppe, PALLANTE Francesco
Принадлежит:

A water pump with a stator, a chamber defined inside the stator, a ring arranged inside said chamber having a radially outer surface in contact with a radially inner surface of the stator, and a rotor arranged inside the ring and rotatable around a rotation axis. The rotor has a plurality of vanes movable along respective radial directions and having respective radially outer ends in contact with a radially inner surface of the ring. The ring is made of a material having a friction coefficient lower than friction coefficient of metal materials. 1. A water pump comprisinga stator,a chamber defined inside the stator,a rotor rotatable inside said chamber around a rotation axis and provided with a plurality of vanes movable along respective radial directions, anda ring arranged inside said chamber in a radially outer position with respect to said rotor,whereinsaid ring has a radially outer surface in contact with a radially inner surface of said stator and a radially inner surface in contact with radially outer ends of said vanes, andsaid ring is made of a material having a friction coefficient lower than friction coefficient of metal materials.2. The water pump according to claim 1 , wherein said ring is made of carbon graphite.3. The water pump according to claim 1 , wherein said ring is rotatable with respect to said stator.4. The water pump according to claim 1 , wherein said ring is integral with said stator.5. The water pump according to claim 1 , wherein said stator is made of a metal material.6. The water pump according to claim 1 , wherein said stator is made of a plastic material.7. The water pump according to claim 1 , wherein said vanes and said rotor are made of carbon graphite.8. A cooling circuit of an internal combustion engine claim 1 , comprising the water pump according to . The present application claims priority to Italian Patent Application No. 102017000071507 filed on Jun. 27, 2017, which is incorporated herein by reference in its entirety.The ...

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Номер записи: 97
27-12-2018 дата публикации

WATER PUMP

Номер: US20180372095A1
Автор: LO BIUNDO Giuseppe, PALLANTE Francesco
Принадлежит:

A water pump with a pump body, a chamber defined inside the pump body, and a rotor rotatable inside the chamber around a rotation axis with a plurality of vanes movable along respective radial directions. A tilting stator is arranged inside the chamber in an eccentric position with respect to the rotor. The tilting stator is pivoted at a rotation pin. A ring is interposed between the tilting stator and the rotor and is in contact with a radially inner surface of the tilting stator and with radially outer ends of the vanes. Adjusting members for adjusting the pump displacement are active on the tilting stator to move the tilting stator with respect to the rotor and place the tilting stator in at least one predetermined operating position defined between a maximum eccentricity position and a minimum eccentricity position. 1. A water pump , comprisinga pump body,a chamber defined inside the pump body,a rotor rotatable inside the chamber around a rotation axis and provided with a plurality of vanes movable along respective radial directions,a tilting stator arranged inside the chamber in an eccentric position with respect to the rotor and pivoted at a rotation pin,a ring interposed between the tilting stator and the rotor and in contact with a radially inner surface of the tilting stator and with radially outer ends of the vanes, andadjusting members for adjusting pump displacement, the adjusting members being active on the tilting stator to move the tilting stator with respect to the rotor and place the tilting stator in at least one predetermined operating position defined between a maximum eccentricity position and a minimum eccentricity position.2. The water pump according to claim 1 , wherein said adjusting members comprisefirst thrusting members adapted to exert a first thrusting action on the tilting stator, andat least one thrusting chamber defined between the pump body and the tilting stator and configured to be filled with a predetermined quantity of ...

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Номер записи: 98
26-11-2020 дата публикации

SPOOL VALVE USED IN A VARIABLE VANE PUMP

Номер: US20200370551A1
Автор: CHAN Theresa Kam Lun, HUGHES Matthew Tyler, MORTON Paul, SY Michael Benjamin
Принадлежит:

A variable displacement vane pump is described. The pump includes a control chamber provided between a housing and a control slide. A pressure-controlled relief valve is in fluid communication with the outlet path and moves to block or unblock a relief port based on output pressure of the lubricant. A feedback channel fluidly connects the control chamber to an inlet path of the pump. The feedback channel further connects to a control port that is connected to a main control valve. The relief valve and control valve are distinct and not fluidly connected. The relief valve moves once the pressure in the outlet path exceeds a predetermined amount, opening the relief port, and thus delivers a portion of the output lubricant to the control chamber via the relief port, thereby pressurizing the control chamber and reducing eccentricity of the pump by displacing the control slide. 1. A variable displacement vane pump for dispensing lubricant to a system , the pump comprising:a housing comprising an inner surface defining an internal chamber;an inlet for inputting the lubricant into the housing for pressurization, the inlet being connected to an inlet path in the housing;an outlet for delivering pressurized lubricant to the system from the housing, the outlet being connected to an outlet path provided in the housing;a control slide displaceable about a pivot pin within the internal chamber of the housing in (a) a displacement increasing direction for increasing pump displacement and (b) a displacement decreasing direction for reducing pump displacement, and the control slide having an inner surface defining a rotor receiving space;a rotor with at least one vane mounted in the rotor receiving space of the control slide and configured for rotation within and relative to the control slide about a rotational axis for pressurizing the lubricant input via the inlet path, the at least one vane configured for engagement within the inner surface of the control slide during rotation ...

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Номер записи: 99
03-12-2020 дата публикации

VARIABLE DISPLACEMENT ROTARY VANE PUMP

Номер: US20200378382A1
Автор: LO BIUNDO Giuseppe, PANCOTTI Angelo
Принадлежит:

A variable displacement rotary vane pump. The pump has a pump body, a rotor with vanes that rotates inside the pump body around a rotation axis, an oscillating stator arranged in an eccentric position around the rotor, a fulcrum for the rotation of the oscillating stator with respect to the pump body, and adjusting means for adjusting the displacement of the pump. The adjusting means act on the oscillating stator to move it with respect to the rotor and the pump body. The fulcrum is integrally formed with the oscillating stator and is housed in a recess formed in the pump body. The pump has a sliding element between the fulcrum and the recess. The sliding element is at least partially free to rotate within the recess. 18-. (canceled)9. A variable displacement rotary vane pump , comprisinga pump body,a rotor configured to rotate inside the pump body around a rotation axis and provided with a plurality of vanes,an oscillating stator arranged in an eccentric position around the rotor,a fulcrum for the rotation of said oscillating stator with respect to the pump body, andadjusting means configured to adjust the displacement of the pump, the adjusting means acting on the oscillating stator to move the oscillating stator with respect to the rotor and the pump body, whereinsaid fulcrum is made in a single piece with said oscillating stator and is housed in a recess formed in said pump body,the pump comprises a sliding element interposed between said fulcrum and said recess, andsaid sliding element is at least partially free to rotate within said recess.10. The variable displacement rotary vane pump of claim 9 , wherein said sliding element comprises opposed curved end portions configured to selectively abut against said pump body or said oscillating stator when said oscillating stator moves between a position of maximum eccentricity and a position of minimum eccentricity of said oscillating stator with respect to the rotor.11. The variable displacement rotary vane pump of ...

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Номер записи: 100