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20-11-2008 дата публикации

ПЛАСТИНЧАТЫЙ НАСОС

Номер: RU0000078276U1
Автор:
Принадлежит: Сажнов Александр Викторович

Пластинчатый насос, состоящий из корпуса, ротора, в котором установлены пластины, подвижного статора с направляющими углублениями для пластин, позволяющего изменять производительность насоса от нуля до заданного конструкцией насоса объемов, а также изменять направление подачи жидкости на противоположное, при этом у пластин выполнены выступы, входящие в зацепление с направляющими углублениями подвижного статора. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 78 276 (13) U1 (51) МПК F04C 2/344 (2006.01) F04C 14/22 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2007102656/22 , 25.01.2007 (24) Дата начала отсчета срока действия патента: 25.01.2007 (73) Патентообладатель(и): Сажнов Александр Викторович (RU) (45) Опубликовано: 20.11.2008 U 1 7 8 2 7 6 R U Ñòðàíèöà: 1 U 1 Формула полезной модели Пластинчатый насос, состоящий из корпуса, ротора, в котором установлены пластины, подвижного статора с направляющими углублениями для пластин, позволяющего изменять производительность насоса от нуля до заданного конструкцией насоса объемов, а также изменять направление подачи жидкости на противоположное, при этом у пластин выполнены выступы, входящие в зацепление с направляющими углублениями подвижного статора. 7 8 2 7 6 (54) ПЛАСТИНЧАТЫЙ НАСОС R U Адрес для переписки: 410035, г.Саратов, ул. Уфимцева, 6, корп.4, кв.158, А.В.Сажнову RU 5 10 15 20 25 30 35 40 45 78 276 U1 Насос пластинчатый с регулируемой производительностью и реверсивной подачей жидкости. Изобретение относится к области гидравлических систем и может найти применение в конструкциях различного назначения, в частности в устройствах передающих вращение. Известны пластинчатые насосы с неизменяющийся производительностью, которые устанавливаются на автомобилях КамАЗ, ЗИЛ в гидроусилителях рулевого управления. Предлогаемый насос имеет более широкие возможности, он способен изменять производительность от нуля до заданных конструкцией ...

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Номер записи: 1
10-01-2015 дата публикации

АВТОМАТИЧЕСКАЯ ВАКУУМНАЯ СИСТЕМА ВОДОЗАПОЛНЕНИЯ ЦЕНТРОБЕЖНЫХ ПОЖАРНЫХ НАСОСОВ

Номер: RU0000149547U1
Автор: Бурдин Александр Михайлович, Гайнанов Валерий Феликсович, Майоров Виталий Евгеньевич, Хорьков Николай Анатольевич
Принадлежит: Закрытое акционерное общество "УСПТК-Пожгидравлика"

1. Автоматическая вакуумная система водозаполнения центробежных пожарных насосов, включающая вакуумный насос, запорное устройство с дистанционным приводом, установленное в магистрали, соединяющей вакуумный насос с всасывающим патрубком центробежного насоса, датчик давления, установленный в напорной полости центробежного насоса, и электронный блок управления включением вакуумного насоса и работой запорного устройства по сигналу от датчика давления, отличающаяся тем, что вакуумный насос выполнен с автономным электроприводом. 2. Автоматическая вакуумная система водозаполнения центробежных пожарных насосов по п. 1, отличающаяся тем, что вакуумный насос соединен с всасывающим патрубком центробежного насоса через пеносмеситель, при этом запорное устройство с дистанционным приводом выполнено в виде трехходового шарового крана, центральный штуцер которого соединен с пеносмесителем, один боковой штуцер соединен с вакуумным насосом, второй боковой штуцер соединен с магистралью подачи пенообразователя в насос, а шар крана имеет L-образный канал. 3. Автоматическая вакуумная система водозаполнения центробежных пожарных насосов по п. 1, отличающаяся тем, что привод запорного устройства выполнен пневматическим. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК F04C 14/06 (11) (13) 149 547 U1 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2014123047/06, 16.05.2014 (24) Дата начала отсчета срока действия патента: 16.05.2014 (73) Патентообладатель(и): Закрытое акционерное общество "УСПТКПожгидравлика" (RU) (45) Опубликовано: 10.01.2015 Бюл. № 1 1 4 9 5 4 7 R U Формула полезной модели 1. Автоматическая вакуумная система водозаполнения центробежных пожарных насосов, включающая вакуумный насос, запорное устройство с дистанционным приводом, установленное в магистрали, соединяющей вакуумный насос с всасывающим патрубком центробежного насоса, датчик давления, установленный в напорной полости центробежного насоса, и электронный ...

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Номер записи: 2
20-02-2016 дата публикации

ВНУТРИСКВАЖИННЫЙ ОГРАНИЧИТЕЛЬ ПЕРЕНАПРЯЖЕНИЙ

Номер: RU0000159922U1
Автор: Сухачев Илья Сергеевич, Сушков Валерий Валентинович
Принадлежит: Федеральное государственное бюджетное образовательное учреждение высшего образования "Тюменский государственный нефтегазовый университет" (ТюмГНГУ)

Внутрискважинный ограничитель перенапряжений, содержащий корпус с расположенными в нем нелинейными варисторами, отличающийся тем, что указанный корпус выполнен с возможностью соединения с погружным электродвигателем, а выходы нелинейных варисторов соединены с шинопроводами и заземляющим проводником. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 159 922 U1 (51) МПК H02H 7/09 (2006.01) F04C 14/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2015147686/07, 05.11.2015 (24) Дата начала отсчета срока действия патента: 05.11.2015 (45) Опубликовано: 20.02.2016 Бюл. № 5 (54) ВНУТРИСКВАЖИННЫЙ ОГРАНИЧИТЕЛЬ ПЕРЕНАПРЯЖЕНИЙ U 1 1 5 9 9 2 2 R U Стр.: 1 U 1 Формула полезной модели Внутрискважинный ограничитель перенапряжений, содержащий корпус с расположенными в нем нелинейными варисторами, отличающийся тем, что указанный корпус выполнен с возможностью соединения с погружным электродвигателем, а выходы нелинейных варисторов соединены с шинопроводами и заземляющим проводником. 1 5 9 9 2 2 Адрес для переписки: 625000, г. Тюмень, ул. Володарского, 38, ТюмГНГУ, управление НИР, Шаруха Е.И. (73) Патентообладатель(и): Федеральное государственное бюджетное образовательное учреждение высшего образования "Тюменский государственный нефтегазовый университет" (ТюмГНГУ) (RU) R U Приоритет(ы): (22) Дата подачи заявки: 05.11.2015 (72) Автор(ы): Сушков Валерий Валентинович (RU), Сухачев Илья Сергеевич (RU) RU 5 10 15 20 25 30 35 40 45 159 922 U1 Полезная модель относится к области электротехники и внутрискважинного оборудования, а именно может быть использована для ограничения перенапряжений, оказываемых влияние на сопротивление изоляции установки электрического центробежного насоса внутри скважины с применением погружных насосов с вентильными или асинхронными погружными электродвигателями. Существующие на данный момент решения для ограничения перенапряжений представлены только в виде наземного оборудования, устанавливаемого на ...

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Номер записи: 3
08-06-2017 дата публикации

РЕГУЛИРУЕМАЯ НАСОСНАЯ УСТАНОВКА

Номер: RU0000171643U1
Автор: Елюкин Николай Никанорович, Решетников Максим Иванович
Принадлежит: Акционерное общество "Государственный ракетный центр имени академика В.П. Макеева"

Предлагаемая полезная модель относится к машиностроению, в частности к регулируемым насосным установкам. Регулируемая насосная установка содержит: 1 - приводной двигатель; 2, 3, 4 - насосы; 5 - общий вал; 6, 7, 8 - линии всасывания; 9 - бак рабочей жидкости; 10, 11, 12 - линии нагнетания; 13 - общая линия подачи к потребителю; 14, 15, 16 - предохранительные (переливные) клапаны; 17, 18, 19 - устройства регулирования подачи. Полезная модель обеспечивает плавное изменение в широком диапазоне подачи насосной установки с нерегулируемыми объемными насосами. 6 з. п.ф-лы, 2 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 171 643 U1 (51) МПК F04C 11/00 (2006.01) F04C 14/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21)(22) Заявка: 2016119168, 17.05.2016 (24) Дата начала отсчета срока действия патента: 17.05.2016 08.06.2017 Приоритет(ы): (22) Дата подачи заявки: 17.05.2016 (56) Список документов, цитированных в отчете о поиске: НАВРОЦКИЙ К.Л. Теория и (45) Опубликовано: 08.06.2017 Бюл. № 16 R U Стр.: 1 10, 11, 12 - линии нагнетания; 13 - общая линия подачи к потребителю; 14, 15, 16 - предохранительные (переливные) клапаны; 17, 18, 19 - устройства регулирования подачи. Полезная модель обеспечивает плавное изменение в широком диапазоне подачи насосной установки с нерегулируемыми объемными насосами. 6 з. п.ф-лы, 2 ил. U 1 (54) РЕГУЛИРУЕМАЯ НАСОСНАЯ УСТАНОВКА (57) Реферат: Предлагаемая полезная модель относится к машиностроению, в частности к регулируемым насосным установкам. Регулируемая насосная установка содержит: 1 - приводной двигатель; 2, 3, 4 - насосы; 5 - общий вал; 6, 7, 8 - линии всасывания; 9 - бак рабочей жидкости; проектирование гидро- и пневмоприводов, Москва, Машиностроение, 1991, с.111-113, рис. 2.19 б. SU 533752 A1, 30.10.1976. RU 75875 U1, 27.08.2008. US 2005180855 A1, 18.08.2005. GB 1187774 A, 15.04.1970. 1 7 1 6 4 3 Адрес для переписки: 456300, Челябинская обл., г. Миасс, Тургоякское ш., 1, АО "ГРЦ ...

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Номер записи: 4
31-07-2018 дата публикации

Шестеренный насос

Номер: RU0000182027U1
Автор: Прокофьев Андрей Брониславович, Прунь Дмитрий Александрович, Рекадзе Павел Дмитриевич, Родионов Леонид Валерьевич
Принадлежит: федеральное государственное автономное образовательное учреждение высшего образования "Самарский национальный исследовательский университет имени академика С.П. Королева"

Полезная модель относится к области машиностроения, в частности к шестеренным насосам, и может быть использована в насосных установках для перекачивания различных жидкостей. Насос содержит заднюю часть корпуса 1, среднюю часть корпуса 2, переднюю часть корпуса 3, торцевые компенсаторы 4 и 5, ведущий вал 6 с ведущей шестернею 8, ведомый вал 7 с ведомой шестернею 9, втулки 10 и 11, гайку 12 с наружной резьбой, металлическое кольцо 13, фторопластовое кольцо 14, винты с цилиндрической головкой и шестигранным углублением под ключ 16 и 17, гайку 18, уплотнительные кольца 19, манжету 20, подшипники 21, шайбу 22, шпонку 15 и штифты 23. Техническим результатом, обеспечиваемым приведенной совокупностью признаков, является упрощение конструкции, снижение массы, возможность регулирования торцевого зазора вследствие естественного износа и сохранение производительности насосного агрегата. 3 ил. И 1 182027 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ ВУ” 182 027” 44 ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ИЗВЕЩЕНИЯ К ПАТЕНТУ НА ПОЛЕЗНУЮ МОДЕЛЬ МЕЭК Восстановление действия патента Дата, с которой действие патента восстановлено: 01.07.2021 Дата внесения записи в Государственный реестр: 01.07.2021 Дата публикации и номер бюллетеня: 01.07.2021 Бюл. №19 Стр.: 1 па дс0С8 1 ЕП

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Номер записи: 5
18-04-2019 дата публикации

Шиберный насос

Номер: RU0000188640U1
Автор: Павлов Виктор Александрович
Принадлежит: Закрытое акционерное общество "Электромагнит" (ЗАО "Электромагнит")

Полезная модель относится к роторным насосам объемного действия и может быть использована для перемещения жидкостей различной вязкости, в различных отраслях промышленности. Задачей является уменьшение габаритных размеров насоса за счет использования в его конструкции разгруженного предохранительно-перепускного клапана. Шиберный насос содержит корпус, снабженный всасывающим и напорным патрубками и крышкой. Внутри корпуса эксцентрично установлен вал с закрепленным на нем ротором, снабженным радиальными пазами, в которых подвижно размещены шиберы, разделяющие между собой всасывающую и нагнетательную полости насоса. Насос имеет предохранительно-перепускной клапан, содержащий корпус и золотник, прижатый к перегородке корпуса пружиной. В торцевой части золотника выполнено отверстие, соосное клапану. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 188 640 U1 (51) МПК F04C 2/344 (2006.01) F04C 14/24 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК F04C 2/344 (2019.02); F04C 14/24 (2019.02) (21) (22) Заявка: 2019100333, 09.01.2019 (24) Дата начала отсчета срока действия патента: 09.01.2019 18.04.2019 (56) Список документов, цитированных в отчете о поиске: CN 202756238 U, 27.02.2013. RU (45) Опубликовано: 18.04.2019 Бюл. № 11 R U (54) Шиберный насос (57) Реферат: Полезная модель относится к роторным насосам объемного действия и может быть использована для перемещения жидкостей различной вязкости, в различных отраслях промышленности. Задачей является уменьшение габаритных размеров насоса за счет использования в его конструкции разгруженного предохранительноперепускного клапана. Шиберный насос содержит корпус, снабженный всасывающим и напорным Стр.: 1 патрубками и крышкой. Внутри корпуса эксцентрично установлен вал с закрепленным на нем ротором, снабженным радиальными пазами, в которых подвижно размещены шиберы, разделяющие между собой всасывающую и нагнетательную полости насоса. Насос имеет предохранительно-перепускной ...

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Номер записи: 6
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: 7
24-05-2012 дата публикации

Method for managing faults in a magneto-rheological hydraulic power steering system

Номер: US20120130594A1
Автор: Balarama V. Murty, Bradley Bezzina, Chandra S. Namuduri, Ebrahim Handy, Kenneth J. Shoemaker, Suresh Gopalakrishnan
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A system and method for managing faults occurring in a power steering system in a vehicle is disclosed that has particular application for an MRHPS system to provide reliable functioning of the power steering system. The method includes detecting a fault condition in the MRHPS system and selecting a safe mode from a plurality of predetermined safe modes based on the fault condition. The plurality of predetermined safe modes include a normal operation mode, an engine speed follow mode, a manual mode, a fixed duty cycle mode and a voltage control mode. If a fault condition is detected, the method applies the safe mode to manage the fault condition.

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Номер записи: 8
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: 9
09-08-2012 дата публикации

Variable displacement pump

Номер: US20120199411A1
Автор: Makoto Kimura, Satoshi Nonaka
Принадлежит: Unisia JKC Steering Systems Co Ltd

A variable displacement pump includes a pumping part and a cam ring for supplying working fluid to a vehicle steering device. The cam ring is arranged radially outside of the pumping part, and configured to move along with a change in eccentricity of the cam ring, wherein the change in eccentricity causes a change in specific discharge rate. A solenoid is configured to control the eccentricity of the cam ring by being driven with an energizing current conformed to a control setpoint. A base setpoint is calculated based on steering angular speed and vehicle speed. The control setpoint is calculated based on the base setpoint and steering angular acceleration in a manner that the control setpoint increases more quickly than the base setpoint when the base setpoint increases in accordance with steering operation of the steering wheel.

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Номер записи: 10
23-08-2012 дата публикации

Pump assemblies with freeze-preventive heating

Номер: US20120211093A1
Автор: David J. Grimes
Принадлежит: Micropump Inc

Pumps are disclosed that include a pump housing and at least one movable pumping element situated in the housing. The pumping element(s) are magnetically driven by magnetically coupling an external magnet driver (e.g., a stator) to a driven magnet located in the housing. A control circuit selectively operates the stator and a heat-producing element, so as to energize the heat-producing element especially in a potential freezing condition when the pump is not being otherwise operated. Thus, the fluid in the pump is prevented from freezing, and freeze-related pump damage is avoided. The heat-producing element can be the stator itself energized differently from when the stator is used for driving the pump.

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Номер записи: 11
20-09-2012 дата публикации

Downhole Backspin Retarder for Progressive Cavity Pump

Номер: US20120237380A1
Автор: Jorge Robles-Villa
Принадлежит: Weatherford Lamb Inc

A backspin retarder for a progressive cavity pump deploys on the drive string uphole from a pump unit. The backspin retarder has a shaft that connects to portions of the drive string. An impeller disposes on the shaft and can move axially and radially. In an unengaged condition, the impeller and shaft can rotate relative to one another so the drive string can rotate in a drive direction without impediment from the impeller. In an engaged condition, the impeller rotates with the shaft in a backspin direction. In this way, vanes on the impeller can retard the backspin of the shaft and drive string by attempting to force the lifted fluid column flowing downhole past the impeller back uphole. The retarder can use a pin and slot arrangement or an arrangement of engageable teeth to engage the impeller to the rotation of the shaft.

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Номер записи: 12
25-10-2012 дата публикации

Dual power input fluid pump

Номер: US20120269653A1
Автор: Andrew Kowalski, Jaroslaw Lutoslawski, Richard Muizelaar
Принадлежит: Andrew Kowalski, Jaroslaw Lutoslawski, Richard Muizelaar

A fluid pumping system for a vehicle having an internal combustion engine includes a housing, an electric motor, a controller to control the speed of the electric motor, a planetary gearset including a first member adapted to be driven by the internal combustion engine, a second member driven by the electric motor and a third member. A pump is driven by the third member of the planetary gearset. The housing contains the electric motor, the pump and the controller.

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Номер записи: 13
22-11-2012 дата публикации

Vacuum control in a vacuum filler without external air supply

Номер: US20120295526A1
Автор: Martin Staudenrausch
Принадлежит: Albert Handtmann Maschinenfabrik GmbH and Co KG

A conveyor system for a filling machine and a method of conveying pasty mass with a corresponding conveyor system and a corresponding filling machine, including a housing with a vacuum opening and a vacuum pump as well as a suction line for generating a vacuum in the conveyor system. A valve means and at least one pressure sensor for measuring the pressure in the suction line and/or in the conveyor system are provided. A control means controls the vacuum in the conveyor system or the suction line, respectively, wherein the cross-section of the suction line is adjusted in response to the measured pressure via the valve means.

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Номер записи: 14
03-01-2013 дата публикации

System and method for driving a pump

Номер: US20130004337A1
Автор: Kevin D. ANDERSON
Принадлежит: Solar Turbines Inc

A system for driving a pump includes a gas turbine engine having an output shaft, and a torque converter including an input shaft coupled to the output shaft of the gas turbine engine and an output shaft configured to be coupled to an input shaft of a pump. The system further includes a controller coupled to the torque converter, wherein the controller is configured to receive a signal indicative of a pressure at at least one of a pump inlet and a pump outlet, and control a speed of the output shaft of the torque converter based on the signal indicative of pressure.

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Номер записи: 15
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: 16
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: 17
14-03-2013 дата публикации

Hydraulic transport device and electrohydraulic control module

Номер: US20130064699A1
Автор: Andreas Albert, Joachim Buhl, Marco Grethel, Martin Staudinger, Ronald Glas
Принадлежит: Conti Temic Microelectronic GmbH, Schaeffler Technologies AG and Co KG

A hydraulic transport device for transporting a hydraulic medium. The device includes at least one externally toothed gear pump that is driven by an electric motor, and a control device attached to the pump. A passive rotational speed detection element is arranged in the pump and interacts with an active rotational speed detection element that is arranged in the control device to detect the rotational speed of the pump shaft.

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Номер записи: 18
21-03-2013 дата публикации

VACUUM PUMPING SYSTEM

Номер: US20130071274A1
Автор: Galtry Michael Andrew, Turrell David Alan
Принадлежит: EDWARDS LIMITED

The present invention relates to a vacuum pumping system () for evacuating a vacuum chamber (), the system comprising: a vacuum pump (); and a plurality of forelines () for conveying gas to the vacuum pump wherein in a first low vacuum stage of chamber evacuation a first foreline arrangement () can be connected for conveying gas to the vacuum pump and in a second higher vacuum stage of chamber evacuation a second foreline arrangement () comprising one or more of said forelines can be connected for conveying gas to the vacuum pump, wherein the second foreline arrangement has a total cross-sectional area for conveying fluid which is larger than a total cross-sectional area of the first foreline arrangement. 1. A vacuum pumping system for evacuating a vacuum chamber , the system comprising: a vacuum pump; and a plurality of forelines for conveying gas to the vacuum pump wherein in a first low vacuum stage of chamber evacuation a first foreline arrangement can be connected for conveying gas to the vacuum pump and in a second higher vacuum stage of chamber evacuation a second foreline arrangement comprising one or more of said forelines can be connected for conveying gas to the vacuum pump , wherein the second foreline arrangement has a total cross-sectional area for conveying fluid which is larger than a total cross-sectional area of the first foreline arrangement.2. A vacuum pumping system as claimed in claim 1 , wherein at least one of said forelines in said second foreline arrangement is isolated from the first foreline arrangement during said relatively low vacuum stage of chamber evacuation.3. A vacuum pumping system as claimed in or claim 1 , wherein said second foreline arrangement comprises one or more of said forelines of said first foreline arrangement.4. A vacuum pumping system as claimed in claim 3 , wherein said second foreline arrangement comprises said plurality of forelines.5. A vacuum pumping system as claimed in any one of the preceding claims claim 3 ...

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Номер записи: 19
23-05-2013 дата публикации

LUBRICANT PUMP AND CONTROL PISTON

Номер: US20130129554A1
Автор: Ernst Jürgen
Принадлежит: Audi AG

A lubricant pump includes a housing in which at least one pair of intermeshing gear wheels is arranged for conveying lubricant. One gear wheel is rotatably supported on a drive shaft and the other gear wheel is rotatably supported on an axially shiftable displacement unit for adjusting a variable flow volume. Axially displaceable in a housing receptacle is a control piston for hydraulically adjusting the position of the displacement unit. The control piston is configured as composite structural part and has a central longitudinal shaft and cylinder rings which include control edges for clearing or closing control channels feeding into the receptacle. The cylinder rings are made from a material which reduces friction and/or wear with respect to the receptacle, and the central longitudinal shaft has at least one section made from a material having a coefficient of thermal expansion at least substantially corresponding to the one of the receptacle. 15. -. (canceled)6. A lubricant pump , comprising:a housing having a receptacle;at least one pair of intermeshing gear wheels arranged in the housing for conveying lubricant, with a first one of the gear wheels being rotatably supported on a drive shaft and a second one of the gear wheels being rotatably supported on an axially shiftable displacement unit for adjusting a variable flow volume; anda control piston axially displaceable in the receptacle of the housing for hydraulically adjusting a position of the displacement unit, said control piston being configured as a composite structural part and having a central longitudinal shaft which has at least one section made from a material having which at least substantially corresponds to a coefficient of thermal expansion of the receptacle, and cylinder rings which are supported on the longitudinal shaft and made from a material which reduces friction and/or wear with respect to the receptacle.7. The lubricant pump of for use in a combustion engine of a motor vehicle.8. The ...

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Номер записи: 20
04-07-2013 дата публикации

Vehicular power transmitting system

Номер: US20130170953A1
Автор: Fumitake Suzuki, Haruhiko Shibata, Hidenobu Yamaguchi, Kenichi Mori, Masahiko Suzuki, Masahiro Ito, Masashi Hattori, Naoki Okoshi, Yoshihiro Mizuno, Yusuke Ogata
Принадлежит: Aisin AW Co Ltd, JTEKT Corp, Toyooki Kogyo Co Ltd, Toyota Motor Corp

A vehicular power transmitting system including an oil pump constructed to sufficiently reduce a required drive torque. A high-pressure-port discharge amount of first and second high-pressure passages of the oil pump is determined such that an amount of consumption of working oil of relatively high pressure can be afforded only by the high-pressure-port discharge amount, during steady-state running of a vehicle in which engine speed is not lower than a predetermined threshold value corresponding to a predetermined lowest target input shaft speed of a continuously variable transmission for its shifting control. The pressure of the working oil discharged from first and second low-pressure discharge passages is kept at a predetermined low level, and the required drive torque of the oil pump is sufficiently reduced.

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Номер записи: 21
11-07-2013 дата публикации

CONTROL OF A PUMP DEVICE

Номер: US20130177450A1
Автор: MAGNUSSON Niklas
Принадлежит: Sulzer Pump Solutions AB

A method of controlling a pump device for discharging fluid, wherein the method comprises the steps of providing a heat portion adapted to be thermally coupled to the fluid to allow heat transfer there between when the fluid is at or above a certain level; monitoring a temperature parameter reflecting a temperature of the heat portion, the temperature parameter including a temperature value of the temperature of the heat portion; calculating a cooling rate value (CRV), the calculation including a comparison between at least two temperature values measured at different times; performing a pumping operation analysis including a comparison between a present cooling rate value (CRV) and a reference cooling rate value (ref), the reference cooling rate value representing a specific cooling rate of the heat portion; and initiating pumping operation to discharge the fluid if the cooling rate value is equal to or exceeds the reference cooling rate value. 1. A method of controlling a pump device for discharging fluid , said method comprising the steps of:providing a heat portion adapted to be thermally coupled to said fluid to allow heat transfer there between when the fluid is at or above a certain level;monitoring a temperature parameter reflecting a temperature of said heat portion, said temperature parameter including a temperature value of the temperature of said heat portion,calculating a cooling rate value (CRV), said calculation including a comparison between at least two temperature values measured at different timesperforming a pumping operation analysis including a comparison between a present cooling rate value (CRV) and a reference cooling rate value (ref), said reference cooling rate value representing a specific cooling rate of said heat portion; andinitiating pumping operation to discharge said fluid if said cooling rate value is equal to or exceeds said reference cooling rate value.2. The method according to claim 1 , said method further comprising a step of ...

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Номер записи: 22
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: 23
26-09-2013 дата публикации

PENDULUM-SLIDE PUMP

Номер: US20130251580A1
Автор: Maeder André, STITTERICH Eike
Принадлежит: MAHLE International GmbH

A pendulum-slide pump may include a rotatingly mounted inner rotor connected via at least one pendulum with an outer rotor. The inner rotor may define a plurality of radial grooves configured to receive the pendulum. The grooves may have two groove walls that continues via a rounded region into a shared groove base. The rounded region may have variable groove radii and continue with at least a reduced curvature jump into the groove base or the groove walls. The groove radii may be greated in the translation to the groove walls and to the groove base than therbetween. 1. A pendulum-slide pump , comprising: a rotatingly mounted inner rotor connected via at least one pendulum with an outer rotor ,wherein the inner rotor defines a plurality of radial grooves configured to receive the at least one pendulum the pendulum,wherein the grooves have respectively two groove walls, which continue via respectively a rounding region into a shared groove base,wherein the rounding region has variable groove radii and continues with at least a reduced curvature jump into at least one of the groove base and the groove walls, andwherein the groove radii are greater in the transition to the groove walls and to the groove base than therebetween.2. The pendulum-slide pump according to claim 1 , wherein the transition from the groove base to the groove wall is constructed without a curvature direction change.3. The pendulum-slide pump according to claim 1 , wherein the groove base has an elliptical shape and a groove width measured between the two groove walls.4. The pendulum-slide pump according to claim 3 , wherein a first radius of the ellipsoidal groove base corresponds to approximately half of the groove width claim 3 , and a second radius corresponds to approximately half of the first radius.5. The pendulum-slide pump according to claim 3 , wherein a first radius of the ellipsoidal groove base corresponds to approximately half of the groove width claim 3 , and a second radius ...

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Номер записи: 24
03-10-2013 дата публикации

Wiper assembly for a pump

Номер: US20130259647A1
Автор: John Edward Stachowiak, Jr.
Принадлежит: Weatherford Lamb Inc

A wiper assembly may be used to prevent wellbore debris from entering an operating region of a pump. The wiper assembly may include a housing, a wiper member, a backing member, and a biasing member. The biasing member may bias the backing member into engagement with the wiper member, and thereby bias the wiper member into engagement with a tapered surface of the housing. The wiper member may include a corresponding tapered surface, which thereby forces the wiper member radially inward into engagement with an operating member of the pump.

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Номер записи: 25
21-11-2013 дата публикации

Compact, Light Weight, Battery Operated, Self-Priming, Positive Displacement Pump

Номер: US20130309099A1
Автор: Jeffrey B. Schopperle, Michael H. Irving
Принадлежит: FLOW CONTROL LLC

Compact, lightweight, battery operated, self-priming, positive displacement pump for storing in a toolbox or tool belt includes an elongated housing having a longitudinal axis, and an inline configuration including a positive displacement pump assembly to respond to a motor assembly drive torque, self-prime, and pump fluid from an input port to an output port, a motor assembly to respond to signaling and provide the motor assembly drive torque, a pump control interconnect assembly to provide the signaling to control the operation of the motor assembly by current based on run dry mode or over current, by time based on a timer set to run for an amount of time, or voltage based on over/under voltage; and a rechargeable battery housing/assembly to respond to recharging signaling and with a rechargeable DC power supply and power control module for providing some combination of inrush, overcharging, over-discharging, short circuit, over current protection.

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Номер записи: 26
19-12-2013 дата публикации

CASE FLOW AUGMENTING ARRANGEMENT FOR COOLING VARIABLE SPEED ELECTRIC MOTOR-PUMPS

Номер: US20130336802A1
Автор: Galloway Phillip Wayne, Skinner Jeffrey David, Valtr Kelly Dale
Принадлежит: EATON CORPORATION

Example fluid circuits (e.g., within aircrafts) include first and second pump assemblies. The first pump assembly has an electric motor and a first fluid pump. The first fluid pump is coupled to the electric motor and has a case drain port that is in fluid communication with a case drain region of the first fluid pump. The second pump assembly is powered by hydraulic pressure from the first fluid outlet of the first fluid pump and functions to augment flow through the case drain region of the first fluid pump. 1. A fluid circuit comprising: an electric motor;', 'a first fluid pump configured to be driven by the electric motor, the first fluid pump having a first fluid inlet, a first fluid outlet and a case drain port that is in fluid communication with a case drain region of the first fluid pump;, 'a first pump assembly including 'a second fluid pump configured to augment flow through the case drain region of the first fluid pump when the second fluid pump assembly is powered by the hydraulic pressure from the first fluid outlet of the first fluid pump.', 'a second pump assembly in fluid communication with the first pump assembly, the second pump assembly being powered by hydraulic pressure from the first fluid outlet of the first fluid pump when the first fluid pump is driven by the electric motor, the second fluid pump assembly including2. The fluid circuit of claim 1 , wherein the second fluid pump comprises:a fluid motor having a fluid inlet and a fluid outlet, the fluid inlet being in fluid communication with the first fluid outlet of the first fluid pump; anda second fluid pump coupled to the fluid motor, the second fluid pump having a second fluid inlet and a second fluid outlet, the second fluid inlet being in fluid communication with the case drain port of the first fluid pump so that the second fluid pump pumps fluid from the case drain region of the first fluid pump.3. The fluid circuit of claim 1 , wherein the second fluid pump assembly comprises:a pilot ...

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Номер записи: 27
26-12-2013 дата публикации

HYDRAULIC FEED DEVICE AND HYDRAULIC SYSTEM

Номер: US20130343940A1
Автор: Ammon Edgar, Knauss Ruediger, RICHTER Christian, Ristovski Robert, Tepler Mark
Принадлежит:

A hydraulic feed device may include a pendulum-slide cell pump having an internal rotor drivingly connected to an external rotor via pendulum slides. A hydraulic positioning device may have a positioning element for changing an eccentricity between the internal rotor and the external rotor. The positioning element may be preloaded by a spring device for setting a maximum eccentricity. The positioning device may have a first pressure adjusting and a second pressure adjusting chamber for adjusting the positioning element. The first pressure adjusting chamber may be permanently hydraulically connected to a pressure side of the pendulum-slide cell pump and configured to hydraulically counteract the spring device. The second pressure adjusting chamber may be controlled via a control valve and hydraulically connected to the pressure side of the pendulum-slide cell pump and configured to hydraulically counteract the spring device. 1. A hydraulic feed device , comprising:a pendulum-slide cell pump having an internal rotor drivingly connected to an external rotor via pendulum slides,a hydraulic positioning device having a positioning element for changing an eccentricity between the internal rotor and the external rotor,wherein the positioning element is preloaded by a spring device for setting a maximum eccentricity,wherein the positioning device has a first pressure adjusting chamber for adjusting the positioning element, and a second pressure adjusting chamber for adjusting the positioning element,wherein the first pressure adjusting chamber is permanently hydraulically connected to a pressure side of the pendulum-slide cell pump and configured to hydraulically counteract the spring device,wherein the second pressure adjusting chamber is controlled via a control valve and hydraulically connected to the pressure side of the pendulum-slide cell pump and configured to hydraulically counteract the spring device.2. The device according to claim 1 , wherein the first pressure ...

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Номер записи: 28
09-01-2014 дата публикации

Construction machine

Номер: US20140007566A1
Автор: Hironori Takenaka, Tomohiko Asakage
Принадлежит: Kobelco Cranes Co Ltd

Provided is a construction machine, wherein an upper slewing body comprises a slewing frame and first and second power units, and wherein the second power unit comprises a second engine, a second controller to control driving of the second engine, a second hydraulic oil tank, a second hydraulic pump configured to be driven by the second engine to thereby suck hydraulic oil from the second hydraulic oil tank and discharge the hydraulic oil toward a hydraulic actuator, a second fuel tank configured to store fuel, and a second support member supporting the second engine, the second hydraulic oil tank, the second hydraulic pump and the second fuel tank, and wherein the second support member is configured to be attachable and detachable with respect to the slewing frame independently of a first support member of the first power unit, and the second hydraulic pump is detachably connected to the hydraulic actuator.

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Номер записи: 29
09-01-2014 дата публикации

Polyetherimide pump

Номер: US20140010697A1
Автор: Peter Haug
Принадлежит: SABIC INNOVATIVE PLASTICS IP BV

A positive displacement pump and methods of making a positive displacement pump having a component, the component having a density ranging from more than 0 to 3 g/cm 3 , a glass transition temperature (Tg) greater than or equal to 150° C., and a yield strength retention greater than 90% after soaking in engine oil for 7 days at 150° C.

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Номер записи: 30
23-01-2014 дата публикации

OIL PUMP

Номер: US20140023539A1
Автор: IZUTSU Masato, Watanabe Takatoshi
Принадлежит:

The oil pump includes a pump housing in which a second partitioning section is formed between a trailing end section of a discharge port and a leading end section of an intake port. The width dimension of the second partitioning section is the same as or slightly larger than the formation range of a space between teeth which is constituted by an inner rotor and an outer rotor passing the second partitioning section during low-speed rotation. A protruding surface section is formed in the same plane as and continuously with the second partitioning section from the vicinity of an inner diameter side of the trailing end section of the discharge port. The protruding surface section and the second partitioning section are the same as or slightly larger than the formation range of the space between teeth which passes the protruding surface section and the second partitioning section during high-speed rotation. 1. An oil pump which changes an amount of fluid transferred from an intake port to a discharge port in one rotation , by causing rotation of a reference line linking centers of rotation of an inner rotor and an outer rotor , the oil pump comprising:a pump housing in which a second partitioning section is formed between a trailing end section of the discharge port and a leading end section of the intake port,wherein a width dimension of the second partitioning section is formed to be the same as or slightly larger than a formation range of a space between teeth which is constituted by the inner rotor and the outer rotor passing the second partitioning section during low-speed rotation,a protruding surface section is formed in a same plane as and continuously with the second partitioning section from the vicinity of an inner diameter side of the trailing end section of the discharge port, andthe protruding surface section and the second partitioning section are formed to be the same as or slightly larger than the formation range of the space between teeth which passes ...

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Номер записи: 31
27-02-2014 дата публикации

HYBRID VARIABLE EXTERNAL GEAR PUMP

Номер: US20140056732A1
Автор: Wang Liping, Williamson Matthew
Принадлежит: MAGNA POWERTRAIN

A pump comprising a housing having a first cavity and a second cavity, where the first cavity has a first motor and a pump element located therein. The first cavity is also connected to an external gear connected to the outside of the housing for receiving rotation power from a vehicle engine. The second cavity has a second motor that selectively connects to the pump element in the first cavity to provide toque. 1. An electric gear oil pump comprising:a housing having a first cavity and a second cavity and an inlet and an outlet;a drive gear connected to the housing;a first motor in the first cavity;a primary shaft extending through the first cavity, said primary shaft being connected to both the drive gear and the first motor, wherein the first motor and the drive gear supply torque to the primary shaft;a pump element connected to and rotatable with the primary shaft for pumping fluid through the inlet and the outlet of the housing;a second shaft extending through the second cavity, the second shaft has second shaft gear configured to selectively engage the pump element in order to input torque to the primary shaft and pump element when the drive gear is not supplying torque to the primary shaft; anda second motor contained in the second cavity and selectively drives the second shaft.2. The electric gear oil pump of further comprising:a clutch member connected between the drive gear and the primary shaft, wherein the drive gear selectively supplies torque to the primary shaft from an engine in one direction when the clutch member is engaged and the drive gear is disconnected from the primary shaft when the clutch member is disengaged.3. The electric gear oil pump of further comprising a lead screw connected between the second shaft and the second shaft gear claim 2 , wherein the lead screw causes the second shaft gear to slide in a linear direction in the second cavity when the second motor is energized claim 2 , thereby engaging the second shaft gear with the pump ...

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Номер записи: 32
27-03-2014 дата публикации

Gerotor pump, a gerotor motor and a gerotor transmission system

Номер: US20140083086A1
Автор: Christer Odenmarck, Jan Andersson, Jonas Forssell, Lars Andersson
Принадлежит: Volvo Car Corp

A gerotor pump ( 1 ) comprising; a housing ( 2 ) which comprises a first and a second supply socket ( 18 a , 18 b; 19 a, 19 b ), an inner rotor ( 4 ); and an outer rotor ( 5 ) rotatably located relative the housing ( 2 ); wherein the inner rotor ( 4 ) is located within the outer rotor ( 5 ), and lobes ( 13, 4 ) of the inner and the outer rotor ( 4, 5 ) engaging, the inner rotor ( 4 ) is centred around an axis ( 15 b) which is eccentric from an axis of rotation ( 15 ) of said outer rotor ( 5 ), wherein a pressure chamber ( 7 ) with a high pressure and a low pressure section, is defined between the inner and outer rotor ( 4, ), characterised in, that the inner rotor ( 4 ) is rotatably arranged on a shaft cylinder ( 10 b ) which is fixed at one end of a central drive shaft ( 10 ) of the pump ( 1 ) and is centred about said rotational axis ( 15 b ), whereby said inner rotor ( 4 ) wanders in said outer rotor ( 5 ) when said central drive shaft ( 10 ) is turned, and wherein the inner rotor ( 4 ) is provided with radial supply conduits ( 9 ) extending from the pressure chambers ( 7 ) to the shaft cylinder ( 10 b ), and wherein said shaft cylinder ( 10 b ) is provided with at least a first and a second cylinder opening ( 16, 17 ), such that the first cylinder opening ( 16 ) is axially displaced relative the second cylinder opening ( 17 ), and said first opening ( 16 ) is arranged such that it is connected to said high pressure section, and said second cylinder opening ( 17 ) is arranged such that it is connected to said low pressure section.

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Номер записи: 33
27-03-2014 дата публикации

High-Performance Oil Pump

Номер: US20140086763A1
Автор: Osterhaus Michael J., Stucky Nathaniel D.
Принадлежит: Melling Tool Company

A high-performance oil pump for pumping oil in an internal combustion engine that eliminates or greatly reduces cavitation in the oil pump, thereby increasing the efficiency and performance of the oil pump. The present invention provides a housing having an inlet for receiving a supply of oil and an outlet for discharging the oil. At least two gears rotatably and matingly are disposed within the housing for pumping the oil from the inlet to the outlet. A pressure regulation circuit is disposed within the housing for balancing oil flow pressure between the inlet and the outlet by redirecting a portion of the oil from the outlet to the inlet when said oil flow pressure reaches a predetermined level at the outlet in order to reduce or eliminate cavitation of oil in the oil pump. 1. A high-performance oil pump for pumping oil in a variable speed internal combustion engine , comprising:an enclosed housing having a first side and a second side, wherein said first side has a single inlet for receiving oil from an oil reservoir and said second side has a single outlet for discharging oil to said internal combustion engine, wherein said inlet has a longitudinal axis;a pair of gears rotatably and matingly disposed within a pumping chamber of said housing for pumping oil from said inlet to said outlet, wherein said pumping chamber has a longitudinal axis;an inlet passageway extending from said inlet to an inlet side of said pumping chamber, wherein said inlet passageway has a longitudinal axis substantially parallel to said longitudinal axis of said pumping chamber and said longitudinal axis of said inlet, wherein said inlet is consistently larger than said inlet passageway from said oil reservoir to said inlet passageway;an outlet passageway extending from an outlet side of said pumping chamber to said outlet, wherein said outlet is larger than said outlet passageway; anda pressure regulating circuit disposed within a bore in said housing redirects a portion of oil from said ...

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Номер записи: 34
05-01-2017 дата публикации

ELECTRO HYDROSTATIC ACTUATORS

Номер: US20170002845A1
Автор: Grand Serge, LESAGE Emmanuel
Принадлежит:

An electro hydrostatic actuator comprises a hydraulic pump driven by an electric motor to supply hydraulic fluid to a hydraulic actuator. The pump comprises an inlet and an outlet for the hydraulic fluid and an active flow path arranged therebetween such that, in an active mode of operation when the pump is driven by the electric motor, hydraulic fluid is actively drawn in through the inlet and exhausted out through the outlet. The pump further comprises a bypass flow path arranged to open between the inlet and outlet such that, in a damping mode of operation when the pump is not driven by the electric motor, hydraulic fluid is able to pass through the pump along the bypass flow path between the inlet and outlet. 1. An electro hydrostatic actuator comprising:an electric motor; and an inlet and an outlet for the hydraulic fluid and an active flow path arranged therebetween such that, in an active mode of operation when the pump is driven by the electric motor, hydraulic fluid is actively drawn in through the inlet and exhausted out through the outlet; and', 'a bypass flow path arranged to open between the inlet and outlet such that, in a damping mode of operation when the pump is not driven by the electric motor, hydraulic fluid is able to pass through the pump along the bypass flow path between the inlet and outlet., 'a hydraulic pump driven by the electric motor, the pump configured to supply hydraulic fluid to a hydraulic actuator, the pump comprising2. An electro hydrostatic actuator according to claim 1 , wherein the bypass flow path is arranged to automatically open when the pump is not driven by the electric motor.3. An electro hydrostatic actuator according to claim 2 , wherein the pump further comprises a resilient member arranged to automatically open the bypass flow path when the pump is not driven by the electric motor.4. An electro hydrostatic actuator according to claim 1 , wherein the size of the bypass flow path is adjusted during manufacture and/or ...

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Номер записи: 35
07-01-2016 дата публикации

Control Of Variable Displacement Vane Pump Used As Scavenge Pump

Номер: US20160003113A1
Автор: Claywell Mark R., Pryor Bryan K.
Принадлежит:

A system includes a first scavenge oil pump that draws oil from a first draw location within a vehicle according to a first variable displacement associated with the first scavenge oil pump. The first variable displacement is based on a first modified scavenge ratio assigned to the first scavenge oil pump. An oil pump control module determines a first scavenge ratio, determines a first scavenge ratio multiplier based on at least one of vehicle acceleration and vehicle orientation, and applies the first scavenge ratio multiplier to the first scavenge ratio to generate the first modified scavenge ratio. 1. A system comprising:a first scavenge oil pump that draws oil from a first draw location within a vehicle according to a first variable displacement associated with the first scavenge oil pump, wherein the first variable displacement is based on a first modified scavenge ratio assigned to the first scavenge oil pump; andan oil pump control module that determines a first scavenge ratio, determines a first scavenge ratio multiplier based on at least one of vehicle acceleration and vehicle orientation, and that applies the first scavenge ratio multiplier to the first scavenge ratio to generate the first modified scavenge ratio.2. The system of claim 1 , wherein the oil pump control module sets a first duty cycle of a first solenoid associated with the first scavenge oil pump based on the first modified scavenge ratio.3. The system of claim 1 , wherein the vehicle orientation corresponds to at least one of pitch and yaw of the vehicle.4. The system of claim 1 , wherein the first draw location corresponds to a location in an oil pan.5. The system of claim 1 , wherein the oil pump control module determines the first scavenge ratio multiplier using a scavenge ratio multiplier map.6. The system of claim 1 , wherein the oil pump control module determines the first scavenge ratio based on engine speed claim 1 , engine oil temperature claim 1 , and engine load.7. The system of ...

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Номер записи: 36
07-01-2016 дата публикации

SYSTEM AND METHOD FOR OPERATING A PUMP

Номер: US20160003242A1
Автор: Brown Don, Luarde Paul, van der Merwe Lyon
Принадлежит: FRANKLIN ELECTRIC COMPANY, INC.

A pumping system and method for operating a pumping system including a motor coupled to a variable speed drive to drive a pump. A torque indicator corresponding to the torque presented to the drive is determined. The torque indicator may be used to detect a fault if it exceeds a baseline torque, or to detect a defective transducer, or to detect a system change by perturbing one parameter and comparing another to a predicted value. 1. A pumping system comprising: a pump and a motor coupled to a variable speed drive to drive the pump , the variable speed drive including a processor and a non-transitory computer readable medium having embedded therein processing instructions configured to perform a method when executed by the processor , the method including:periodically measuring a fluid parameter with a transducer;controlling the pump based on the fluid parameter;correlating the fluid parameter and a motor torque indicator selected from torque, power and current;predicting a value of the torque indicator or the fluid parameter based on the correlation;comparing the predicted value to an actual value of the torque indicator or the fluid parameter; andif the comparison exceeds a prediction threshold, controlling the pump based on the torque indicator.2. A pumping system as in claim 1 , wherein the fluid parameter is based on at least one of pressure and fluid level.3. A pumping system as in claim 2 , wherein the fluid parameter is additionally based on a corrected fluid level obtained by subtracting a casing pressure in a well from an actual bottom-hole pressure.4. A pumping system as in claim 1 , the method further comprising modeling the motor and predicting toque conditions.5. A pumping system as in claim 1 , wherein the variable speed drive comprises a variable frequency drive.6. A method for operating a pumping system claim 1 , the method comprising:driving a pump with a motor coupled to a variable frequency drive;periodically measuring a fluid parameter with a ...

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Номер записи: 37
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: 38
07-01-2016 дата публикации

ECCENTRIC SCREW PUMP WITH OVERPRESSURE PROTECTION

Номер: US20160003244A1
Автор: Mueller Thomas, Stracke Roland, STRELOW Guenter, Warkentin Viktor
Принадлежит:

An eccentric screw pump comprising an outer part () and an inner part () therein, one of the parts () being driven rotatably and the other part () being able to move eccentrically relative to the other part (). The screwthreads () of the outer part () extend angularly over less than an entire helix along the axial length (L) of the part, so that during operation pumping chambers that are open to both ends are created, through which sudden pressure relief takes place. 2. The pump according to claim 1 , wherein the screwthreads of the outer part extend angularly only through between 75% and 95% of an entire helix along the axial length of the part.3. The pump according to claim 1 , wherein the outer part is eccentrically movable around the axis of the inner part claim 1 , and the inner part is rotatably driven.4. The pump according to claim 1 , wherein the outer part is made of an elastomeric material and at one of its axial ends is held on the pump housing via an elastic support structure.5. The pump according to claim 1 , wherein the axial length of the outer part is selected such that the pump has a predetermined maximum delivery head. This application is the US-national stage of PCT application PCT/EP2014/000320 filed 6 Feb. 2014 and claiming the priority of German patent application 102013003833.2 itself filed 7 Mar. 2013.The invention relates to a pump for moving a medium to be displaced from an intake end to an output end, comprising an outer part and an inner part arranged therein, one of the parts being driven rotatably and the other part being able to move eccentrically relative to the one part. The inner part has at least one screwthread extending helically and axially, and the outer part has a number of screwthreads that is greater by one than the inner part. The ratio of the number of screwthreads in every cross-section is identical to the ratio of the pitches of the screwthreads, and the outer part and the inner part make contact in such a way that the ...

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Номер записи: 39
04-01-2018 дата публикации

VANE CELL PUMP WITH A SUB-VANE REGION TO WHICH PRESSURE CAN BE APPLIED

Номер: US20180003176A1
Автор: Welte Claus
Принадлежит:

A vane cell pump, includes a rotatable rotor having vanes which can be moved back and forth; an end plate with a pressure passage for discharging pressure fluid and a supply passage for supplying a sub-vane region with pressure fluid; a flow channelling device on an end face of the end plate facing axially away from the rotor; a first outlet region for discharging a first partial flow of the pressure fluid; a second outlet region for discharging a second partial flow of the pressure fluid; a first flow path along which the first partial flow flows through the first outlet region; a second flow path connecting the pressure passage to the supply passage, diverges from the first flow path and is delineated by the flow channelling device; and a third flow path connecting the supply passage to the second outlet region and delineated by the flow channelling device. 1. A vane cell pump , comprising:a rotor which can be rotated about a rotational axis, and one or more vanes which can each be moved back and forth in a respective vane receptacle of the rotor;a cam structure which surrounds the rotor and, when the rotor is rotationally moved, guides the vane(s) such that delivery cells which periodically increase and decrease in size are formed;an end plate axially facing the rotor and comprising a pressure passage for discharging pressure fluid and a supply passage for supplying a sub-vane region with pressure fluid;a flow channelling device on an end face of the end plate facing axially away from the rotor;a first outlet region for discharging a first partial flow of the pressure fluid flowing through the pressure passage;a second outlet region for discharging a second partial flow of the pressure fluid flowing through the pressure passage;a first flow path along which the first partial flow flows through the first outlet region;a second flow path which connects the pressure passage to the supply passage, diverges from the first flow path and is delineated by the flow ...

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Номер записи: 40
02-01-2020 дата публикации

OIL PUMP

Номер: US20200003209A1
Автор: ETO Takamitsu, Higuchi Koji, KATAOKA Shigehiro, KOBAYASHI Yoshiyuki
Принадлежит:

An oil pump includes a motor including a shaft disposed along a central axis extending in an axial direction, a rotor rotatable around the shaft, a stator disposed to face the rotor, a housing that accommodates the rotor and the stator, a pump including a pump rotor rotatable together with the shaft to suction and discharge oil, and a pump housing including an accommodation portion that accommodates the pump rotor. The pump housing includes an intake port through which the oil is suctioned, a discharge port through which the oil is discharged, and a pressure sensor disposed between the discharge port and the accommodation portion. 110-. (canceled)11. An oil pump comprising:a motor including a shaft disposed along a central axis extending in an axial direction, a rotor rotatable around the shaft, a stator disposed to face the rotor, and a housing that accommodates the rotor and the stator; anda pump including a pump rotor rotatable with the shaft to suction and discharge oil, and a pump housing including an accommodation portion that accommodates the pump rotor; whereinthe pump housing includes an intake port through which the oil is suctioned, a discharge port through which the oil is discharged, and a pressure sensor which is disposed between the discharge port and the accommodation portion.12. The oil pump according to claim 11 , whereinthe discharge port includes a first discharge port and a second discharge port; andthe pressure sensor is disposed between any one of the first discharge port and the second discharge port and the accommodation portion.13. The oil pump according to claim 12 , whereinin a state that the discharge port is fully opened, the second discharge port has a flow rate of the oil larger than a flow rate of the oil in the first discharge port; andthe pressure sensor is disposed between the accommodation portion and the second discharge port.14. The oil pump according to claim 12 , whereinthe pump includes a solenoid valve to adjust the flow ...

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Номер записи: 41
02-01-2020 дата публикации

OIL PUMP

Номер: US20200003210A1
Автор: Higuchi Koji, KATAOKA Shigehiro, KOBAYASHI Yoshiyuki
Принадлежит:

An oil pump includes a motor including a shaft disposed along a center axis, a rotor rotating around the shaft, a stator disposed to face the rotor, a housing accommodating the rotor and the stator, and a pump. The pump includes a pump rotor rotating together with the shaft, and a pump housing including an accommodating portion that accommodates the pump rotor. The pump housing includes a suction port that suctions in oil, a discharge port that discharges oil, and a pressure sensor that detects hydraulic pressure of oil in a partial flow passage allowing communication between the discharge port and the accommodating portion. The pressure sensor is disposed outside the housing of the motor, and the housing includes a wall that blocks electromagnetic waves. 113-. (canceled)14. An oil pump , comprising:a motor including a shaft disposed along a center axis extending in an axial direction, a rotor rotating around the shaft, a stator disposed to face the rotor, and a housing accommodating the rotor and the stator; anda pump including a pump rotor rotating together with the shaft to suction and discharge oil, and a pump housing including an accommodating portion that accommodates the pump rotor; whereinthe pump housing includes a suction port that suctions in oil, a discharge port that discharges oil, and a pressure sensor that detects hydraulic pressure of oil in a flow passage allowing communication between the discharge port and the accommodating portion;the pressure sensor is disposed outside the housing of the motor; andthe housing includes a wall that blocks electromagnetic waves.15. The oil pump according to claim 14 , whereinthe pump is disposed on one side of the motor in an axial direction thereof; andthe pump housing includes a pump body including the accommodating portion that accommodates the pump rotor and further includes a side surface and a bottom surface positioned on another side of the motor in the axial direction, and a pump cover closing an opening ...

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Номер записи: 42
03-01-2019 дата публикации

ELECTRIC PUMP SYSTEM AND METHOD

Номер: US20190003477A1
Автор: Bellemare Eric, Dellal Benjamin, Graves Scott Michael, Silva Rodriguez Diego Alberto, Zhu Yufei
Принадлежит: Tesla, Inc.

An electric pump system and method of operating the same involves pumping a fluid through a fluid passageway defined in a mechanical pump from a pump inlet to a hollow shaft of a motor, through the hollow shaft to an internal motor cavity defined by a housing of the motor, and through another fluid passageway defined in the motor housing and mechanical pump that leads to a pump outlet. The system and method further involve pumping the fluid through another fluid passageway defined in the mechanical pump from yet another pump inlet to the pump outlet. The temperature of fluid exiting the hollow shaft can be assessed and used by an electronic control unit (ECU) of the electric pump system to control the same. The electric pump system can be part of a cooling and lubrication system for an electric vehicle transmission, gearbox, differential or transfer case, for example. 1. An apparatus comprising: a stator;', 'a rotor comprising a shaft; and', 'a housing around the stator and rotor and defining an internal motor cavity and a bypass inlet in fluid communication with the internal motor cavity;, 'a motor having a first side and a second side, the motor includingan electronic control unit connected to the first side of the motor;a mechanical pump connected to the second side of the motor and defining a first fluid passageway from a first pump inlet to a pump outlet; andwherein the motor housing and mechanical pump further defining a second fluid passageway from the internal motor cavity to the pump outlet via a second pump inlet.2. The apparatus of claim 1 , wherein the electronic control unit further comprises a thermistor.3. The apparatus of claim 1 , wherein the shaft is a hollow shaft that defines a shaft inlet and a shaft outlet claim 1 , wherein the mechanical pump defines a third fluid passageway from a third pump inlet to the shaft inlet claim 1 , and wherein the shaft outlet is in fluid communication with the internal motor cavity.4. The apparatus of claim 3 , ...

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Номер записи: 43
03-01-2019 дата публикации

SELF ADJUSTING PUMP FOR ICE CREAM FREEZER

Номер: US20190003478A1
Автор: Bendixen Ole, Gyldenlöv Steen, Petersen Erik-J-Wolf
Принадлежит:

A self adjusting gear pump () for an ice cream freezer and a control unit () for adaptively controlling the closing pressure (PCLOSE) of a pump for an ice cream freezer. The gear pump system comprises a pump casing (), an inlet () for receiving a liquid food product of ice cream mix, an outlet () for transferring the ice cream mix into a freezing cylinder () of the ice cream freezer (), wherein the pump () is closed by supplying a closing air pressure onto a moveable pump cover () of the pump via at least one hole () provided straight through the pump casing (), thereby moving said moveable pump cover () against the star wheel () and a control unit () for supplying a calculated closing air pressure (PCLOSE) to the pump by means of the air pressure regulator (). 1. A control unit for adaptively controlling closing pressure of an inlet gear pump of an ice cream freezer , the inlet gear pump comprising a pump casing , an inlet for receiving a liquid food product of ice cream mix , and outlet for transferring the ice cream mix into a freezing cylinder of the ice cream freezer , the inlet being connected to an impeller driving a star wheel which in turn is connected to the outlet , wherein the pump is closed by supplying a closing air pressure onto a movable pump cover of the pump via at least one hole provided straight through the pump casing , thereby moving said movable pump cover against the star wheel , wherein the control unit is configured to:receive a first measure of liquid food product supply pressure at the inlet of the pump,receive a second measure of liquid food product outlet pressure at the outlet of the pump,calculate a closing air pressure being determined by the differential pressure between the liquid food product outlet pressure and the liquid food product supply pressure across the pump,supply the calculated closing air pressure to the moveable pump cover by means of an air pressure regulator via the at least one hole in the pump casing, thereby ...

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Номер записи: 44
08-01-2015 дата публикации

CONTROLLER FOR VARYING FLOW RATE FROM FIXED DISPLACEMENT PUMP

Номер: US20150010416A1
Автор: Henderson, JR. Russell Ross, Maoued Abdul Karim
Принадлежит:

A controller for varying flow rate of a fluid from a fixed displacement pump is provided. The controller includes a pump speed control gear set, a ratio control pump, and a relief valve. The pump speed control gear set includes a sun gear configured to be driven by a prime mover, a planet carrier including one or more planet gears meshed with the sun gear, and a ring gear meshed with the planet gears. The ring gear is configured to connect to an input shaft of the fixed displacement pump. The ratio control pump includes a stationary body, and a rotor coupled to the planet carrier of the pump speed control gear set. The rotor is configured to co-act with the body to pump fluid. The relief valve is connected to the ratio control pump and configured to restrict fluid egress from the ratio control pump. 1. A controller for varying flow rate of a fixed displacement pump , the controller comprising: a sun gear configured to be driven by a prime mover;', 'a planet carrier including one or more planet gears meshed with the sun gear; and', 'a ring gear meshed with the planet gears and configured to connect to an input shaft of the fixed displacement pump; and, 'a pump speed control gear set including at least a stationary body; and', 'a rotor coupled to the planet carrier of the displacement control gear set and configured to co-act with the body to pump fluid; and, 'a ratio control pump includinga relief valve connected to the ratio control pump and configured to restrict fluid egress from the ratio control pump.2. The controller of claim 1 , wherein the rotor is configured to slip with respect to the body while the relief valve selectively restricts fluid egress from the ratio control pump.3. The controller of claim 1 , wherein the relief valve of the ratio control pump is configured to restrict fluid egress such that flow rate of the fixed displacement pump is varied.4. The controller of claim 1 , wherein the pump speed control gear set is one of a simple planetary gear ...

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Номер записи: 45
08-01-2015 дата публикации

PUMP

Номер: US20150010419A1
Автор: Holtmann Ludger, Rosenkranz Kerstin
Принадлежит:

A pump has a suction region, a pressure region, and a pressure space which has an outflow region. A rotor is connected to a shaft in which rotor delivery elements are displacably received. The rotor has expelling regions connected to the pressure region by way of a first fluid path. A cold starting device is prestressed into a first functional position to shutoff a second fluid path from the pressure region to the pressure space, and is configured to be displaced counter to the prestress into a second functional position to open the second fluid path. The cold starting device is arranged in its second functional position at least in regions with a relief face which faces away from the pressure region in a relief receptacle. The relief face is loaded during operation of the pump with a pressure being smaller than a system pressure in the outflow region. 1. A pump comprising:at least one suction region and at least one pressure region;a pressure space which has an outflow region to a consumer;a rotor which is operatively connected to a shaft which rotates about a rotational axis, in which rotor delivery elements are received displaceably, as viewed in the radial direction;the rotor having expelling regions radially within the delivery elements, which expelling regions are connected at least partially to the pressure region by way of a first fluid path; anda cold starting device which comprises a cold starting element which is prestressed into a first functional position and, in its first functional position, shuts off a second fluid path from the pressure region to the pressure space, the cold starting element opening the second fluid path in a second functional position, the cold starting element being configured and arranged in such a way that it can be displaced counter to the prestress into its second functional position by way of a pump pressure which is generated in the pressure region during operation of the pump;wherein the cold starting element is arranged in ...

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Номер записи: 46
12-01-2017 дата публикации

VANE PUMPS

Номер: US20170009768A1
Автор: SR. Craig T., Stambaugh
Принадлежит:

A vane pump includes a liner defining a cammed inner surface, a rotor rotatably disposed within the liner that has a plurality of vane slots, and a plurality of vanes slidably disposed within vane slots of the rotor and configured to extend away from the rotor and contact the cammed inner surface of the liner. The plurality of vanes include at least one sentinel vane that is configured to allow detection of wear on the sentinel vane. 1. A vane pump , comprising:a liner defining a cammed inner surface;a rotor rotatably disposed within the liner and including a plurality of vane slots; anda plurality of vanes slidably disposed within vane slots of the rotor and configured to extend away from the rotor and contact the cammed inner surface of the liner, wherein the plurality of vanes include at least one sentinel vane that is configured to allow detection of wear on the sentinel vane.2. The vane pump of claim 1 , wherein the sentinel vane includes a base portion that is larger than the vane slot of the rotor such that after the sentinel vane wears a predetermined amount claim 1 , the base portion prevents the sentinel vane from extending further from the rotor such that a gap separates a sentinel vane tip and a portion of the cammed inner surface.3. The vane pump of claim 2 , wherein the portion of the cammed inner surface where the gap is created includes a constant radius section.4. The vane pump of claim 2 , wherein the at least one sentinel vane includes a plurality of symmetrically located sentinel vanes.5. The vane pump of claim 4 , wherein the plurality of symmetrically located sentinel vanes includes two sentinel vanes spaced 180 degrees circumferentially from each other.6. The vane pump of claim 4 , wherein the plurality of symmetrically located sentinel vanes are spaced circumferentially apart 360/N degrees claim 4 , wherein N is the total number of sentinel vanes.7. The vane pump of claim 2 , further comprising a vibration sensor operatively connected to the ...

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Номер записи: 47
14-01-2016 дата публикации

SYSTEM AND METHOD FOR CONTROL AND OPTIMIZATION OF PCP PUMPED WELL OPERATING PARAMETERS

Номер: US20160010641A1
Автор: Mancuso Bernardo Martin, Woolsey Kelly Alexander
Принадлежит:

A method of controlling the production efficiency of a well includes determining one or more parameters of a pump model for a pump of the well, determining an inflow rate of liquid into the well, and adjusting a pumping speed of the pump based on the one or more parameters of the pump model to maintain a outflow rate of liquid from the well at a desired fraction of the inflow rate. 1. A method of controlling the production efficiency of a well , the method comprising:determining one or more parameters of a pump model for a liquid pump of the well by measuring well outflow of liquid from the well at a plurality of different pumping speeds of the liquid pump; andadjusting a nominal operating pumping speed of the pump based on the one or more parameters of the pump model to maintain a well outflow rate of liquid from the well at a desired level.2. The method of claim 1 , wherein the desired level is a predetermined fraction of an inflow rate of fluid into a well bore of the well.3. The method of claim 1 , wherein the one or more parameters of the pump model include one of slippage and cavity fillage.4. The method of claim 3 , wherein the slippage is determined by a method including:measuring a first well outflow rate while running the liquid pump at a first speed; andcalculating the slippage by a comparison of a theoretical pump outflow at the first speed provided by a manufacturer of the liquid pump and the first well outflow rate.5. The method of claim 4 , further comprising increasing the efficiency of the well by adjusting the pumping speed of the liquid pump based on the slippage and a displacement of the pump.6. The method of claim 3 , wherein the cavity fillage is determined by a method including:measuring a first well outflow rate while running the liquid pump at a first speed;measuring a second well outflow rate while running the liquid pump at a second speed; andcalculating the cavity fillage from a comparison between the first well outflow rate and the ...

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Номер записи: 48
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: 49
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: 50
14-01-2021 дата публикации

DOSING PUMP SYSTEM

Номер: US20210010469A1
Автор: Ubidia Fernando A.
Принадлежит:

A compact, modular dosing pump system that is capable of microdose and macrodose volume flow rates, reduces or eliminates the need for additional flow control components such as temperature and pressure sensors, and utilizes a wider operational flow range than existing systems while maintaining the level of accuracy and precision exhibited by conventional dosing pump systems is provided. The dosing pump utilizes a a control system to deliver a range of fluid volumes. The control system monitors the motor emf voltage, calculates the flow rate, and makes adjustments to the pump motor voltage to precisely maintain the desired flowrate. 1. A pump system comprising: an inlet port;', 'an inlet flow channel providing fluid communication from the inlet port to the pump input;', 'an output flow channel in fluid communication with the pump output;', 'a bypass flow orifice;', 'a bypass loop valve, wherein the output flow channel provides a fluid path from the pump output to the bypass loop valve and the bypass loop valve is disposed downstream from the bypass flow orifice;', 'a return channel disposed downstream from the bypass loop valve, wherein the return channel is connected to the inlet flow channel and forms a fluid pathway between the bypass loop valve and the inlet flow channel;', 'an outlet branch connected to the output flow channel upstream from the bypass flow orifice;', 'an outlet flow orifice;', 'an outlet branch valve, wherein the outlet branch provides a fluid pathway from the pump output to the outlet branch valve and the outlet branch valve is disposed downstream from the outlet flow orifice; and', 'an outlet port disposed downstream from the outlet branch valve., 'a fluid pump having an pump input and a pump output in fluid communication with a fluid flow circuit wherein said flow circuit comprises2. The pump system of wherein claim 1 , the outlet flow orifice is connected to the outlet branch valve.3. The pump system of wherein claim 1 , the bypass flow ...

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Номер записи: 51
14-01-2021 дата публикации

APPARATUS FOR A COUNTERBALANCE FOR AN ECCENTRIC MOTOR

Номер: US20210010471A1
Автор: HEMPHILL Jeffrey
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

A pump, comprising a rotor axially located between a fluid inlet section and a fluid outlet section, wherein the rotor is configured to rotate about a center axis, a stator surrounding the rotor, wherein the stator includes an inner diameter surface and an outer diameter surface, wherein the inner diameter surface includes a groove surrounding the stator and concentric about the center axis, and a ring surrounding the stator, wherein the ring is adjacent to the groove and defines a gap between an outer diameter of the surface and an inner surface of the ring, wherein the ring includes a ring mass and the stator includes a stator mass, and the ring mass is substantially equal to the stator mass. 1. A pump , comprising:a rotor axially between a fluid inlet section of the pump and a fluid outlet section of the pump, wherein the rotor is configured to rotate about a center axis;a stator surrounding the rotor; anda ring surrounding about the stator, wherein the ring has a ring mass and the stator has a stator mass, and the ring mass is substantially equal to the stator mass, wherein the ring is configured to rotate about the stator in response to a magnetic flux introduced into the stator.2. The pump of claim 1 , where in the pump further includes an air gap located between an inner diameter of the ring and an outer diameter of the stator.3. The pump of claim 2 , wherein a diameter of the air gap decreases when the magnetic flux is introduced into the stator.4. The pump of claim 2 , wherein the stator further includes a groove located on an outer diameter of the stator claim 2 , wherein a first surface of the groove faces an inner diameter of the ring.5. The pump of claim 1 , wherein the ring is concentric about the center axis.6. The pump of claim 1 , wherein the ring has a first polarity and the stator has a second polarity claim 1 , and the first and second polarity are opposite polarities.7. The pump of claim 1 , wherein the stator includes a plurality of legs claim ...

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Номер записи: 52
10-01-2019 дата публикации

System to Pump Fluid and Control Thereof

Номер: US20190010964A1
Автор: Afshari Thomas
Принадлежит:

A fluid system includes a variable-speed and/or a variable-torque pump to pump a fluid, at least one proportional control valve assembly, an actuator that is operated by the fluid to control a load, and a controller that establishes a speed and/or torque of the pump and a position of the at least one proportional control valve assembly. The pump includes at least one fluid driver that provides fluid to the actuator, which can be, e.g., a fluid-actuated cylinder, a fluid-driven motor or another type of fluid-driven actuator that controls a load. Each fluid driver includes a prime mover and a fluid displacement assembly. The fluid displacement assembly can be driven by the prime mover such that fluid is transferred from the inlet port to the outlet port of the pump. 130.-. (canceled)31. A hydraulic system comprising: at least one electric motor,', 'a gear assembly configured to be driven by the at least one electric motor such that fluid is transferred from an inlet port of the hydraulic pump to an outlet port of the hydraulic pump; and', 'a control valve disposed on a side of the inlet port or the outlet port, wherein the first control valve is configured to be throttled; and, 'a hydraulic pump to provide hydraulic fluid to a hydraulic actuator having first and second ports, the hydraulic pump including,'}a controller configured to operate the at least one electric motor to control a flow in the hydraulic system to a flow set point or a pressure in the hydraulic system to a pressure set point, the controller further configured to operate the control valve to control the flow in the hydraulic system to the flow set point or the pressure in the hydraulic system to the pressure set point.32. The hydraulic system of claim 31 , wherein the hydraulic system is a closed-loop system.33. The hydraulic system of claim 31 , wherein the control valve is throttleable between 0% and 100%.34. The hydraulic system of claim 31 , wherein the control valve is a ball valve.35. The ...

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Номер записи: 53
10-01-2019 дата публикации

Method to Determine Leakage of a Hydraulic Pump

Номер: US20190011045A1
Автор: Dimitrios Mourousoglou
Принадлежит: ZF FRIEDRICHSHAFEN AG

A method for detecting an oil leakage of a main pump during a stopping process of an internal combustion engine, where the oil leakage is caused by a reversal of a direction of rotation of a crankshaft of a vehicle including an electric auxiliary pump and the main pump, where the main pump is driven by the internal combustion engine of the vehicle. The method includes determining whether a rotational speed of the electric auxiliary pump exceeds a predefined threshold value, and when the rotational speed of the electric auxiliary pump exceeds the predefined threshold value for the rotational speed, detecting that the main pump is leaking, recording an error in an error memory of the vehicle, and demanding an engine start.

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Номер записи: 54
10-01-2019 дата публикации

HYDRAULIC CIRCUIT TO ENABLE UNIDIRECTIONAL FLOW UNDER FORWARD AND REVERSE POSITIVE DISPLACEMENT PUMP ROTATION

Номер: US20190011046A1
Автор: Garcia Pete R., Parrish Robert
Принадлежит:

A hydraulic assembly includes a pump that is bi-rotationally driven by an output shaft of a transmission or transaxle and a hydraulic circuit that includes a pressure actuated control valve and a plurality of check valves. The check valves are arranged so that, regardless of the direction of rotation of the pump, the suction side of the pump is always in fluid communication with a sump and the pressure side of the pump is always in fluid communication with one of the inlet ports of the spool valve. In one direction of rotation of the pump, pressure in a line is supplied to a control port of a control valve to translate a control element to connect an outlet of the pump to the fluid system of the transmission or transaxle. In the other direction of rotation, no pressure is supplied to the control port and the control element, biased by a spring, connects the other outlet of the pump to the fluid system of the transmission. 1. A hydraulic fluid supply circuit for a motor vehicle powertrain component comprising , in combination ,a hydraulic fluid sump,a bi-directional hydraulic pump having inlet and outlet ports,a first fluid line communicating between the sump and one of the ports and having a check valve configured to allow fluid flow from the sump to the one of the ports,a second fluid line communicating between the sump and another of the ports and having a check valve configured to allow fluid flow from the sump to the another of the ports,a control valve having a control element biased by a spring, a control port at an end of the control element, a first and a second inlet port and an outlet port,a first valve supply line communicating between the another of the ports and the first inlet port of the control valve,a fourth fluid line communicating between the another of the ports and the control port of the control valve, anda second valve supply line communicating between the one of the ports and the second inlet port of the control valve and having a check valve ...

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Номер записи: 55
11-01-2018 дата публикации

METHOD FOR COMPENSATING LEAKAGE LOSSES AND CONVEYOR SYSTEM FOR CONVEYING A DEFINED VOLUME OF A LIQUID

Номер: US20180011500A1
Автор: Baldauf Günter, Metzler Mario, Schwabl Christian
Принадлежит:

A method and a device for compensating leakage losses in a line system, in which at least one positive displacement pump and at least one shut-off member are provided, wherein the method and device can be used for the isobaric metering of liquid plastic components and wherein the actual liquid pressure in the system is determined by way of a pressure measuring device and, when the shut-off member is closed is regulated to a pressure target value by actuation of the positive displacement pump, wherein the conveying loss rate of the positive displacement pump, which ensues to maintain the pressure target value when the shut-off member is closed is added to a target delivery rate in order to compensate for the leakage loss occurring at the corresponding pressure target value. 17-. (canceled)8. A method for compensating leakage losses in a line system for liquids having at least one positive displacement pump and at least one shut-off member , in particular in the at least largely isobaric metering of liquid plastic components , wherein an actual liquid pressure in the line system is ascertained by a pressure measuring device and is regulated to a pressure target value by actuation of the at least one positive displacement pump with the at least one shut-off member closed.9. The method according to claim 8 , wherein a conveying loss rate of the positive displacement pump which ensues to maintain the pressure target value when the at least one shut-off member is closed is added to a target delivery rate in order to compensate for the leakage loss occurring at the corresponding pressure target value.10. The method according to claim 8 , wherein the at least one positive displacement pump includes a rotary displacement machine.11. The method according to claim 10 , wherein the rotary displacement machine includes a geared pump.12. The method according to claim 8 , wherein the line system has a substantially constant volume at least between the at least one positive ...

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Номер записи: 56
09-01-2020 дата публикации

HYDRAULIC MACHINE WITH STEPPED ROLLER VANE AND FLUID POWER SYSTEM INCLUDING HYDRAULIC MACHINE WITH STARTER MOTOR CAPABILITY

Номер: US20200011180A1
Автор: Mathers Norman Ian
Принадлежит:

Various designs for hydraulic devices are disclosed including hydraulic devices that can include a rotor, vanes and a ring. The rotor can be disposed for rotation about an axis. The plurality of vanes can each include a vane step. 5 Each of the plurality of vanes can be moveable relative to the rotor between a retracted position and an extended position where the plurality of vanes work a hydraulic fluid introduced adjacent the rotor. A roller can be mounted to a tip of each of the plurality of vanes. The ring can be disposed at least partially around the rotor. The rotor can include one or more passages for ingress or egress of a 10 hydraulic fluid to or from a region adjacent the vane step and defined by at least the rotor and the vane step. 1. A hydraulic device comprising:a rotor disposed for rotation about an axis;a plurality of vanes each including a vane step, each of the plurality of vanes moveable relative to the rotor between a retracted position and an extended position where the plurality of vanes work a hydraulic fluid introduced adjacent the rotor;a roller mounted to a tip of each of the plurality of vanes; anda ring disposed at least partially around the rotor, the rotor including one or more passages for ingress or egress of a hydraulic fluid to or from a region adjacent the vane step and defined by at least the rotor and the vane step.2. The hydraulic device of claim 1 , further comprising:a first thrust bearing disposed adjacent a first axial end of the rotor; anda second thrust bearing disposed adjacent a second axial end of the rotor, the second axial end opposing the first axial end;wherein the hydraulic fluid passes across at least one of the first thrust bearing and the second trust bearing to communicate with the one or more passages in the rotor.3. The hydraulic device of claim 2 , further comprising:a first plate disposed adjacent the first axial end of the rotor and configured to at least partially house the first thrust bearing, the first ...

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Номер записи: 57
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: 58
09-01-2020 дата публикации

Portable Fuel Pump

Номер: US20200014277A1
Автор: Jacob J. Berry
Принадлежит: Tuthill Corp

An illustrative embodiment of the present disclosure includes a pump having a rotor and a plurality of vanes. The rotor is attached to a motor that rotates it in first and second directions and is located in a cavity. The plurality of vanes are each pivotally coupled to the rotor so as the rotor rotates, the vanes selectively push fluid from an inlet port out through an outlet port. The plurality of vanes each have an end selected from the group consisting of a lobe, no lobe, and a rod located in the lobe. Each of the plurality of vanes also includes a pivot pin configured to fit in a corresponding receptacle located in the rotor so that each of the plurality of vanes is pivotable with respect to the rotor inside the cavity.

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Номер записи: 59
19-01-2017 дата публикации

Mounting structure for electric oil pump

Номер: US20170016442A1
Автор: Shinichiro Hazama, Shinsuke Isogai, Takashi Hashimoto, Toshiyuki Yokoi
Принадлежит: Aisin Seiki Co Ltd

A mounting structure for electric oil pump is provided to allow the electric oil pump to be mounted without through a communication pipe. The electric oil pump includes a pump unit having an inscribed gear pump, and a motor unit disposed adjacent to the pump unit and having a sensorless brushless DC motor for rotating the inscribed gear pump. A transmission accommodates the electric oil pump and includes a transmission case having an oil pan. The electric oil pump is attached to the transmission case with at least a through hole for supplying working oil to the pump unit being submerged in the working oil reserved in the oil pan.

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Номер записи: 60
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: 61
18-01-2018 дата публикации

PROGRESSIVE CAVITY PUMP (PCP) MONITORING SYSTEM AND METHOD

Номер: US20180017623A1
Автор: Scott Jeffrey Alan, ZILLINGER Friedrich Ernst
Принадлежит: GEO PRESSURE SYSTEMS INC.

A pump monitoring system is provided, the pump including a rotor, and stator, the system including a magnetic field sensor to measure a magnetic field generated by a magnet positioned on a rod above the rotor; and a computer system configured to use the magnetic field to determine the rotor position. The magnetic field generated by the magnet can be used to determine characteristics of the pump including slipping and sticking, twist and twist differential, togging and wobble. 1. A system for monitoring a pump comprising a rotor , the system comprising:a magnetic field sensor to measure a magnetic field generated by a magnet; anda computer system configured to use the magnetic field measurements to determine magnetic field readings and determine a Characteristic of the pump, the characteristic comprising at least one of stick or slip; differential twist; wobble; and cogging.2. The system of wherein the computer system is further configured to use the magnetic field readings to determine rotation speed of the rotor and a distance of the magnet to the magnetic sensor.3. The system of wherein the magnet is positioned on a rod above the rotor claim 1 , such that the magnet produces the magnetic field detectable by the magnetic field sensor claim 1 , the magnetic field sensor being connected to the computer system on the surface.4. The system of wherein the computer system is further configured to calculate a twist value by comparing a number of rotor revolutions to a number of surface rotations over a time period.6. The system of wherein the magnetic field sensor comprises at least one analog output magnetic field sensor claim 1 , wherein the computer system is further configured to use a continuous analog magnetic waveform from the analog output magnetic field sensor to determine at least one of: a noise level associated with the pump; and an occurrence of a destructive oscillation.7. The system of wherein the computer system is configured to display claim 1 , on a ...

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Номер записи: 62
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: 63
21-01-2016 дата публикации

Electric motor, pump device using electric motor, and stator

Номер: US20160020659A1
Автор: Jun Takahashi
Принадлежит: Mikuni Corp

An electric motor, and the electric motor includes a stator core provided on a stator, a plurality of teeth provided on the stator core, a coil wound body attached to the tooth, an inner flange portion provided at an inner diameter side of a bobbin, a first engagement portion provided at one end side in a width direction of the inner flange portion, and a second engagement portion provided at the other end side in the width direction of the inner flange portion, the first engagement portion being provided to be located at an outer side in a diameter direction than the second engagement portion of the adjacent coil wound body in a moving direction, the second engagement portion being provided to be located at an outer side in a diameter direction than the first engagement portion of the adjacent coil wound body in a moving direction.

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Номер записи: 64
16-01-2020 дата публикации

Drilling motor having sensors for performance monitoring

Номер: US20200018130A1
Автор: Peter R. Harvey
Принадлежит: Individual

An apparatus includes a sensor assembly disposable in a drill string proximate a drilling motor. The sensor assembly has a first pressure sensor in fluid communication with an upstream side of a rotor in the drilling motor, a second pressure transducer in fluid communication with a downstream side of the rotor and a rotational speed sensor coupled to the rotor. A processor is in signal communication with the first pressure transducer, the second pressure transducer and the rotational speed sensor.

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Номер записи: 65
16-01-2020 дата публикации

ROTARY COMBUSTION ENGINE ROTOR DEACTIVATION AND METHOD

Номер: US20200018228A1
Автор: Ronen Avner
Принадлежит:

A method and a Rotary Combustion Engine (RCE) suitable for deactivation of at least one rotor out of a plurality of rotors. The RCE includes at least a first shaft portion and a second shaft portion which are disposed in straight coextensive longitudinal axial alignment. Each shaft portion may support at least one rotor. The at least first shaft portion and second shaft portion are separated by a gap. A shaft coupling mechanism is operable to bridge the gap and couple the first shaft portion in engagement with the second shaft portion for rotation together. The shaft coupling mechanism is also operable to disengage the first shaft portion and the second shaft portion, and thereby deactivate the rotation of at least one rotor. 1. A Rotary Combustion Engine (RCE) suitable for deactivation of at least one rotor of a plurality of rotors , the RCE comprising:a shaft having at least a first shaft portion and a second shaft portion which are disposed in coextensive longitudinal coaxial alignment, and wherein each shaft portion supports at least one rotor;a gap which separates the first shaft portion and the second shaft portion; and engage the first shaft portion and the second shaft portion for rotation together, and', 'disengage one of the first shaft portion and the second shaft portion to deactivate rotation of the at least one rotor., 'a shaft coupling mechanism configured to2. The RCE of claim 1 , wherein engagement and disengagement of the shaft coupling mechanism is controlled by one of an engine control unit and a user.3. The RCE of claim 2 , wherein an actuator is configured to engage and to disengage the first shaft portion and the second shaft portion.4. The RCE of claim 3 , wherein:the first shaft portion and the second shaft portion have a hollow interior, andthe shaft coupling mechanism is configured for bidirectional longitudinal translation in the hollow interior.5. The RCE of claim 4 , wherein the shaft coupling mechanism is disposed for operation in one ...

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Номер записи: 66
17-04-2014 дата публикации

PRESSURE CONTROL BY PHASE CURRENT AND INITIAL ADJUSTMENT AT CAR LINE

Номер: US20140105758A1
Автор: Sausner Andreas, Völker Marc
Принадлежит: CONTINENTAL AUTOMOTIVE SYSTEMS, INC.

A closed loop control system for a fuel pump based on characteristics of speed, pressure, and current. The pressure generated by the pump system is increased at the point in time when the pump system is working against a dead head system (i.e., coasting) to a level that a calibration valve is opened to a determined working point. By measuring the characteristic phase current as a function of the speed, the characteristic is able to be compared, with the pre-calibrated value of the hardware to perform an error compensation algorithm. The error compensation is overlaid with the standard pressure characteristic as a function of speed and phase current, and uses the pre-calibrated opening pressure value (i.e., the inflection point) of the calibration valve and/or in addition the change of the speed to the initial (first calibration), or to a sliding average therefrom. 1. An apparatus , comprising: a motor;', 'a device for generating a pumping action to transfer fluid, the device connected to and powered by the motor; and', 'a valve in fluid communication with the device;', 'wherein the device transfers the fluid at a selected pressure, and the selected pressure is based on the measured current applied to the motor, and the valve opens when the device pumps the fluid at a predetermined pressure, providing a calibration function., 'a pump system having a closed loop function, including2. The apparatus of claim 1 , further comprising:an inlet conduit in fluid communication with the motor, such that the fluid is transferred from the inlet conduit to the device as the motor powers the device;an outlet conduit in fluid communication with the device, such that the fluid flowing into the outlet conduit is pressurized by the device, and the pressure of the fluid in the outlet conduit is controlled by the device; anda secondary conduit in fluid communication with the outlet conduit;wherein the portion of the fluid in the secondary conduit is at substantially the same pressure as ...

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Номер записи: 67
28-01-2016 дата публикации

High pressure pump having unitary discharge and relief valve

Номер: US20160025054A1
Автор: Masatoshi Kuroyanagi, Shinobu Oikawa, Tatsuro Koga
Принадлежит: Denso Corp

A valve body is provided with a discharge relief portion. A relief valve outlet is formed in an end face thereof on a central axis of the valve body. Discharge valve inlets are point-symmetrically formed with respect to the central axis. A discharge valve outlet is formed in another end face thereof and relief valve inlets are point-symmetrically formed with respect to the central axis. A discharge valve outlet and the discharge valve inlets communicate with each other. A flow of fuel from a pressurization chamber to a fuel discharge port is restricted by a discharge valve member capable of closing the discharge valve outlet. The relief valve outlet and the relief valve inlets communicate with each other. A flow of fuel from the fuel discharge port to the pressurization chamber is restricted by a relief valve member capable of closing the relief valve outlet.

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Номер записи: 68
25-01-2018 дата публикации

AUTOMATIC TRANSMISSION PUMP APPARATUS OR PUMP APPARATUS

Номер: US20180023563A1
Автор: Kumasaka Norikazu
Принадлежит: Hitachi Automotive Systems, Ltd.

The present invention provides a pump apparatus capable of preventing or reducing deterioration of efficiency of a pump. The pump apparatus includes a venturi portion provided on the way along a discharge passage. The venturi portion includes a small diameter portion having a smaller inner diameter than an inner diameter of the discharge passage from a discharge port to the venturi portion and an inner diameter gradually-increasing portion formed in such a manner that an inner diameter thereof gradually increases from the small diameter portion toward a downstream side of the discharge passage. The pump apparatus further includes a control valve configured to receive introduction of hydraulic fluid on an upstream side of the venturi portion and hydraulic fluid in the venturi portion. The control valve is configured to control a flow amount of hydraulic fluid to be supplied into an automatic transmission by switching a flow passage of the hydraulic fluid based on a differential pressure between a pressure on the upstream side of the venturi portion and a pressure in the venturi portion (). 1. An automatic transmission pump apparatus for supplying hydraulic fluid to an automatic transmission of a vehicle , the automatic transmission pump apparatus comprising:a pump housing including a pump element containing portion;a driving shaft pivotally supported on the pump housing;a pump element provided in the pump element containing portion and configured to be rotationally driven by the driving shaft, the pump element forming a plurality of pump chambers around the driving shaft;an intake port formed at the pump housing and opened to an intake region where a volume of a pump chamber increases according to a rotation of the driving shaft among the plurality of pump chambers;a discharge port formed at the pump housing and opened to a discharge region where the volume of the pump chamber reduces according to the rotation of the driving shaft among the plurality of pump chambers ...

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Номер записи: 69
25-01-2018 дата публикации

VARIABLE DISPLACEMENT PUMP

Номер: US20180023564A1
Автор: NAGANUMA Atsushi
Принадлежит: Hitachi Automotive Systems, Ltd.

A variable displacement pump includes: a pump constituting section; a movable member; a first control hydraulic chamber; a second control hydraulic chamber; a control mechanism arranged to be actuated by receiving a control hydraulic pressure which is the discharge pressure on a downstream side of the discharge portion, through a single control passage formed within the engine, and to control a supply and a discharge of the discharge pressure with respect to the second control hydraulic chamber; and a switching mechanism arranged to switch a connection and a disconnection between the control passage and the control mechanism. 1. A variable displacement pump comprising:a pump constituting section arranged to be driven and rotated by an engine, to vary volumes of a plurality of pump chambers, and thereby to discharge an oil sucked from a suction portion from a discharge portion;a movable member arranged to be moved to vary variation amounts of the volumes of the pump chambers;an urging mechanism provided with 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 first control hydraulic chamber arranged to receive a discharge pressure 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 second control hydraulic chamber arranged to receive the discharge pressure 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 increased;a control mechanism arranged to be actuated by receiving a control hydraulic pressure which is the discharge pressure on a downstream side of the discharge portion, through a single control passage formed within the engine, and to control a supply and a discharge of the ...

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Номер записи: 70
28-01-2021 дата публикации

Gas Compressor and Method for Controlling Same

Номер: US20210025380A1
Автор: Akihiro Yamamoto, Daichi OKA, Fuminori Kato, Hiroaki Saito, Norio Aoyagi, Yoshiyuki Kanemoto
Принадлежит: Hitachi Industrial Equipment Systems Co Ltd

The purpose of the present invention is to provide a gas compressor that can achieve reduced fluctuation of discharge pressure during compressor body number control, and a method for controlling the gas compressor. This gas compressor includes a plurality of compressor units each having a compressor body, a motor for driving the compressor body, and an inverter for controlling a rotational speed of the motor, and a control device for controlling each of the inverters, in which discharge pipes of the compressor bodies are merged with one main discharge pipe and discharge pressure of the main discharge pipe is controlled through control of pressure of the respective discharge pipes by controlling, by means of the respective inverters, driving frequencies of the compressor bodies. The control device determines whether recovery through an increase in the driving frequency of the motor of each of the compressor bodies is possible, on the basis of the pressure value and a temporal changing amount of the discharge pressure of the main discharge pipe when the driving frequency of the motor of the compressor body is being increased but has not reached an upper limit frequency, and controls an increase of the number of the compressor bodies to be operated.

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Номер записи: 71
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: 72
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: 73
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: 74
02-02-2017 дата публикации

ECCENTRIC MOVABLE VANE PUMP

Номер: US20170030352A1
Автор: Tang Bin
Принадлежит:

An eccentric movable vane pump includes a cylinder body, a first rotor, second rotors, and movable vanes of which the number is greater than or equal to 2. The first rotor is eccentrically disposed with the second rotors. One end of each of the movable vanes is rotatably connected to the first rotor, and the other ends of the movable vanes are rotatably connected to the second rotors. The first rotor is disposed on a main shaft. The cylinder body is provided with a fluid inlet and a fluid outlet respectively corresponding to an expansion area and a compression area of a space between adjacent movable vanes. The pump has a simple structure, high efficiency, low cost, multiple operation conditions, high stability, and a long service life, can operate in a high-speed/ultra-high speed range without being sealed by an elastic device, and has a small radial impact in operation. 112421242124214212142111616221. An eccentric movable vane pump , comprising: a cylinder body () , a first rotor () , second rotors () , and movable vanes () , wherein the first rotor () is eccentrically disposed with the second rotors (); one end of each of the movable vanes () is rotatably connected to the first rotor (); the second rotors () correspond one-to-one to the movable vanes () , and the number of the second rotors () and the number of the movable vanes () are greater than or equal to two; the other ends of the movable vanes () are rotatably connected to the second rotors (); the first rotor () is disposed on a main shaft (); and the cylinder body () is provided with a fluid inlet () and a fluid outlet () respectively corresponding to an expansion area and a compression area of a space between adjacent movable vanes ().242020201. The eccentric movable vane pump according to claim 1 , wherein the second rotors () are respectively provided with fixed vanes () claim 1 , and a volume of a space between adjacent fixed vanes () is periodically compressed and expanded claim 1 , such that the ...

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Номер записи: 75
04-02-2016 дата публикации

OIL PUMP

Номер: US20160032923A1
Автор: IZUTSU Masato, Watanabe Takatoshi
Принадлежит:

An oil pump which changes an amount of fluid transferred from an intake port to a discharge port in one rotation, by causing a rotation of a reference line linking centers of rotation of an inner rotor and an outer rotor, the oil pump including a pump housing in which a first partitioning section is formed between a trailing end section of the intake port and a leading end section of the discharge port, and a second partitioning section is formed between a trailing end section of the discharge port and a leading end section of the intake port. A width dimension of the second partitioning section is formed to be the same as or larger than a formation range of a space between teeth which is constituted by the inner rotor and the outer rotor passing the second partitioning section during a low-speed rotation. 1. An oil pump which changes an amount of fluid transferred from an intake port to a discharge port in one rotation , by causing a rotation of a reference line linking centers of rotation of an inner rotor and an outer rotor , the oil pump comprising:a pump housing in which a first partitioning section is formed between a trailing end section of the intake port and a leading end section of the discharge port, and a second partitioning section is formed between a trailing end section of the discharge port and a leading end section of the intake port,wherein the reference line passes through respective central positions of the first partitioning section and the second partitioning section in a width direction during a low-speed rotation,wherein the reference line rotates in a direction opposite to a direction of rotation of the inner rotor and the outer rotor, and passes through rear sides, in terms of the direction of rotation, of the respective central positions of the first partitioning section and the second partitioning section in the width direction during a high-speed rotation,wherein a width dimension of the second partitioning section is formed to be the ...

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Номер записи: 76
01-02-2018 дата публикации

Systems and methods for assessing the health of a first apparatus by monitoring a dependent second apparatus

Номер: US20180030851A1
Автор: Floyd R. Emmons
Принадлежит: United Technologies Corp

Systems and methods for assessing the health of a first apparatus by monitoring a second apparatus are described herein. A method for monitoring a health of a first apparatus may comprise receiving a performance parameter from a second apparatus, wherein performance of the second apparatus is dependent upon the health of the first apparatus, assessing the performance parameter, and determining the health of the first apparatus. In various embodiments, the performance parameter may comprise at least one of a speed value of the second apparatus, a position value of the second apparatus, a temperature value of the second apparatus, or a time value of the second apparatus.

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Номер записи: 77
17-02-2022 дата публикации

Controllable Screw Spindle Pump

Номер: US20220049697A1
Автор: Pawellek Franz
Принадлежит:

A controllable screw spindle pump for the lubricating oil supply of an internal combustion engine comprises a pump housing (), in which a throttle chamber () and a control chamber () are configured which are in contact with the lubricating oil to be conveyed; wherein the throttle chamber () is arranged between the pump inlet () and the spindle chamber (), and the throttle chamber () comprises a throttle valve (), by way of which a throughflow cross section of a conveying stream can be set; and the control chamber () comprises a hydraulic control valve () with a piston () which responds to a hydraulic control pressure (p p) in the control chamber (), and the control chamber () is oriented parallel to the spindle chamber () in relation to an actuating travel of the piston (); and a valve body () of the throttle valve () is coupled to the piston () of the hydraulic control valve (). 17-. (canceled)8. A controllable screw pump for supplying lubrication oil to a combustion engine , comprising:a pump housing with a spindle chamber as well as a pump inlet and a pump outlet communicating with the spindle chamber;at least two screw spindles rotatably accommodated in the spindle chamber, the screw spindles being driven by the combustion engine; whereininside the pump housing, a throttle chamber and a control chamber are provided, which are in contact with the lubrication oil to be conveyed; whereinthe throttle chamber is situated between the pump inlet and the spindle chamber, and the throttle chamber includes a throttle valve, via which a flow cross-section of a delivery flow is settable;the control chamber includes a hydraulic regulating valve with a piston that responds to a hydraulic control pressure inside the control chamber, and the control chamber is arranged in parallel to the spindle chamber with reference to a displacement of the piston; anda valve body of the throttle valve is coupled with the piston of the hydraulic regulating valve.9. The controllable screw pump ...

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Номер записи: 78
17-02-2022 дата публикации

DEMAND FUEL SYSTEMS FOR TURBOMACHINES

Номер: US20220049699A1
Автор: Padykula Peter J., Rhoden William E.
Принадлежит: HAMILTON SUNDSTRAND CORPORATION

A fuel system for a turbomachine includes a fuel tank and a first fuel line in fluid communication with the fuel tank and one or more fuel injectors. The first fuel line includes a main fuel pump disposed on the first fuel line, and an electric metering system disposed on the first fuel line downstream of the main fuel pump configured for starting the turbomachine and metering fuel to the fuel injectors. 1. A method for pumping fuel to a turbomachine , comprising:using an electric metering system to meter fuel to one or more fuel injectors of the turbomachine.2. The method of claim 1 , wherein the electric metering system is an electric pump configured to start the turbomachine and to meter fuel to the fuel injectors.3. The method of claim 1 , further comprising pumping fuel to the electric metering system using a mechanical vapor core fuel pump.4. The method of claim 1 , wherein the electric metering system includes a separate electric starter pump and a controllable metering valve.5. The method of claim 3 , further comprising flowing fuel to a fuel/oil cooler disposed downstream of the mechanical vapor core pump and the electric metering system.6. The method of claim 5 , wherein the fuel-oil cooler is between the electric metering system and the one or more fuel injectors.7. A method for not returning fuel to a fuel tank in a turbomachine to reduce heat addition to on-board fuel claim 5 , comprising:metering fuel to one or more fuel injectors of a turbomachine using an electric metering system to continuously pump only required fuel to the fuel injectors and thereby eliminating a need to return fuel to the fuel tank.8. The method of claim 7 , wherein the electric metering system is an electric pump configured to start the turbomachine and to meter fuel to the fuel injectors.9. The method of claim 7 , further comprising pumping fuel to the electric metering system using a mechanical vapor core fuel pump.10. The method of claim 7 , wherein the electric metering ...

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Номер записи: 79
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: 80
30-01-2020 дата публикации

COMPRESSOR INCLUDING TERMINAL PROTECTION STRUCTURE

Номер: US20200032792A1
Автор: HARA Kazuyuki, KINOSHITA Satomi, KOJIMA Kouji, MIZUGUCHI Tomoko, NAKAMURA Souichi, SHINOHARA Yoshihiro, Sugiyama Toru
Принадлежит:

A compressor () includes a casing (), a terminal () protruding from the casing, a first cover () covering the terminal, and a second cover () covering the first cover. 110. A compressor () comprising:{'b': '20', 'a casing ();'}{'b': '29', 'a terminal () protruding from the casing;'}{'b': '50', 'a first cover () covering the terminal; and'}{'b': '70', 'a second cover () covering the first cover.'}2. The compressor according to claim 1 ,wherein the first cover includes resin, and the second cover includes metal.3. The compressor according to claim 1 ,{'b': 1', '2, 'wherein a differential volume (CD) obtained by subtracting a first volume (C), which is a volume of the first cover, from a second volume (C), which is a volume of the second cover, is larger than the first volume.'}4. The compressor according to claim 1 ,{'b': '75', 'wherein a flame-extinguishing member () is provided on an inner surface of the second cover.'}5. The compressor according to claim 1 ,{'b': 51', '52, 'wherein the first cover includes a first opening side surface () in which a first opening () for passing a lead wire is formed, and'}{'b': 71', '72, 'the second cover includes a second opening side surface () in which a second opening () for passing the lead wire is formed.'}6. The compressor according to claim 5 ,{'b': '73', 'wherein the second opening is provided with a seal material () that restrains flow of air passing through the second opening.'}7. The compressor according to claim 5 ,wherein the first opening side surface and the second opening side surface do not face each other.8. The compressor according to claim 7 ,wherein the first opening side surface and the second opening side surface are not parallel to each other.9. The compressor according to claim 5 ,wherein the first opening side surface and the second opening side surface face each other.10. The compressor according to claim 5 ,wherein the first opening has an area larger than an area of the second opening.11. The compressor ...

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Номер записи: 81
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: 82
05-02-2015 дата публикации

OIL PUMP

Номер: US20150037194A1
Автор: Kan Yasuhiko, Nishioka Sentaro, Taguchi Hiroyuki
Принадлежит:

An oil pump has a pump body, an outer rotor, and an inner rotor. The pump body includes a rotor chamber, an inlet port and an outlet port formed in the rotor chamber, an inlet passage communicating with the inlet port, an outlet passage communicating with the outlet port, a relief valve, a relief chamber formed on a discharge side of the relief valve, and an oil return passage formed from the relief chamber to the inlet passage. The outer rotor is supported by the inner circumferential support wall of the rotor chamber. The oil return passage is formed in the inner circumferential support wall as a groove-like recess and opens along an outer circumferential surface of the outer rotor. 1. An oil pump , comprising:a pump body;an outer rotor; andan inner rotor,the pump body including a rotor chamber having an inner circumferential support wall on an inner circumferential side, an inlet port and an outlet port formed in the rotor chamber, an inlet passage communicating with said inlet port, an outlet passage communicating with said outlet port, a relief valve allowing oil to flow from the outlet passage to said inlet passage by relieving pressure, a relief chamber formed on a discharge side of the relief valve, and an oil return passage formed from said relief chamber to said inlet passage;the outer rotor being supported by the inner circumferential support wall of said rotor chamber; andthe inner rotor being arranged on an inner circumferential side of the outer rotor, wherein said oil return passage is formed in said inner circumferential support wall as a groove-like recess and opens along an outer circumferential surface of said outer rotor.2. The oil pump according to claim 1 , wherein said oil return passage is formed at and around a symmetric point of a maximum partition part located between a trailing end of said inlet port and a leading end of said outlet port relative to a center point of said rotor chamber.3. The oil pump according to claim 1 , wherein said ...

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Номер записи: 83
04-02-2021 дата публикации

OIL PUMP

Номер: US20210033091A1
Автор: ARAI Kazuhiro, Nishioka Sentaroh, Sato Kosuke
Принадлежит:

An oil pump includes a rotation shaft, a pump unit including an inner rotor and an outer rotor, and a casing provided with a pump chamber accommodating the pump unit, wherein at least one of a first suction passage, a first ejection passage, a second suction passage, and a second ejection passage of the casing includes a check valve provided in the oil carrying passage and the check valve includes a ball and a seating portion allowing the ball to be seated thereon and does not use a spring. 1. An oil pump comprising:a casing which is provided with a pump chamber;a rotation shaft which is rotatably supported by the casing; anda pump unit which is accommodated inside the pump chamber and is configured to send out oil inside the pump chamber in accordance with the rotation of the rotation shaft,wherein the casing includes a first suction port which communicates with the pump chamber, a first suction passage which communicates with the first suction port, a first ejection port which communicates with the pump chamber, a first ejection passage which communicates with the first ejection port, a second, suction port which communicates with the pump chamber, a second suction passage which communicates with the second suction port, a second ejection port which communicates with the pump chamber, and a second ejection passage which communicates with the second ejection port,wherein, w hen the pump unit rotates in one direction, the first suction port is configured to suck the oil from the first suction passage to the pump chamber and the first ejection port ejects the oil to the first ejection passage,wherein, when the pump unit rotates in the other direction, the second suction port is configured to suck the oil from the second suction passage to the pump chamber and the second ejection port ejects the oil to the second ejection passage, andwherein at least one of the first suction passage the first ejection passage, the second suction passage, and the second ejection ...

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Номер записи: 84
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: 85
09-02-2017 дата публикации

TWO-LIQUID-TYPE, DOUBLE-ROW STRUCTURED TROCHOID PUMP FOR TRANSFERRING HIGH-VISCOSITY LIQUIDS UNDER HIGH PRESSURE

Номер: US20170037849A1
Автор: EOM Boon Do, KIM Hee Kyun
Принадлежит:

Disclosed is a two-liquid-type, double-row structured trochoid pump for transferring high-viscosity liquids under high pressure. A front body, a first housing, a center body, a second housing, and a rear body are successively coupled to form an outer body, and a first idler is coupled to an inside of the first housing. A first rotor is inserted into the first idler, a second idler is coupled to an inside of the second housing, and a second rotor is inserted into the second idler. A shaft is coupled to penetrate the front body, the first housing, the center body, the second housing, the rear body, and the first and second rotors, and the shaft is connected to an external electric motor. Accordingly, transfer equipment can be reduced in size and weight through reduction of an attachment and a controller, which constitute the transfer equipment, into one device. 1. A trochoid pump comprising:a front body having a first discharge port formed on an outer surface thereof, a first discharge flow path formed on an inside thereof to communicate with the first discharge port, a first through-hole formed in the center thereof, and a plurality of fastening holes formed on a circumference of the first through-hole;a first housing coupled to the front body and having both open ends and a path formed in the center thereof;a first idler rotatably inserted into the path of the first housing and having a gear groove formed on an inside thereof;a first rotor inserted into the gear groove of the first idler with a diameter that is smaller than the gear groove, and having a plurality of gears formed on an outer periphery thereof;a center body coupled to the first housing through one side thereof and having a second through-hole formed in the center thereof to coincide with the first through-hole;a second housing coupled to the other side of the center body and having both open ends and a path formed in the center thereof;a second idler rotatably inserted into the path of the second ...

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Номер записи: 86
11-02-2016 дата публикации

Method of determining pump flow in twin screw positive displacement pumps

Номер: US20160041026A1
Автор: STAVALE Anthony E.
Принадлежит:

Techniques are provided for tuning a twin screw positive displacement pump having a signal processor with a signal processor to receive signaling containing information about actual pump performance data for actual rated conditions captured during a tuning function related to the operation of a twin screw positive displacement pump; and determine corrected pump performance data to operate the rotary positive displacement pump by compensating pump performance data being used for operating the twin screw positive displacement pump based at least partly on the actual pump performance data for the actual rated conditions captured during the tuning function. The corrected pump performance data includes corrected published pump performance data having a corrected published rated power and slip factor, and the actual pump performance data contains information about actual power, specific gravity and viscosity related to the operation of the twin screw positive displacement pump and received from a pump controller or controlling device, including a variable frequency drive. 1. Apparatus comprising:a signal processor configured toreceive signaling containing information about actual pump performance data for actual rated conditions captured during a tuning function related to the operation of a twin screw positive displacement pump; anddetermine corrected pump performance data to operate the twin screw positive displacement pump by compensating pump performance data being used for operating the twin screw positive displacement pump based at least partly on the actual pump performance data for the actual rated conditions captured during the tuning function.2. Apparatus according to claim 1 , wherein the corrected pump performance data include corrected published pump performance data having a corrected published rated power a rated slip factor compensated for the actual rated conditions.3. Apparatus according to claim 1 , wherein the actual pump performance data includes ...

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Номер записи: 87
08-02-2018 дата публикации

FUEL PUMP

Номер: US20180038326A1
Автор: FURUHASHI Daiji, SAKAI Hiromi
Принадлежит:

A fuel pump includes: an outer gear; an inner gear that is meshed with the outer gear and includes a receiving hole; a rotatable shaft; a contact portion that is formed to be contactable with the receiving hole; and a pump housing that rotatably receives the outer gear and the inner gear and includes a first housing component and a second housing component, between which the inner gear is held in the axial direction. At least one of the receiving hole and the contact portion includes a tilt surface, which is tilted relative to the axis direction. When the rotatable shaft is rotated to a drive rotation side, the receiving hole contacts the contact portion through the tilt surface, so that the receiving hole is urged in a circumferential direction and is also urged toward the first housing component in the axial direction. 1. A fuel pump comprising:an outer gear that includes a plurality of internal teeth;an inner gear that includes a plurality of external teeth and is meshed with the outer gear while the inner gear is eccentric to the outer gear in an eccentric direction, wherein the inner gear includes a receiving hole that extends in an axial direction;a rotatable shaft that is rotationally driven;a contact portion that is formed to be contactable with the receiving hole, wherein the contact portion transmits a drive force from the rotatable shaft to the receiving hole to rotate the inner gear; anda pump housing that rotatably receives the outer gear and the inner gear and includes a first housing component and a second housing component, between which the inner gear is held in the axial direction, wherein:when the outer gear and the inner gear are rotated to a drive rotation side to increase and decrease volumes of a plurality of pump chambers, which are formed between the outer gear and the inner gear, fuel is sequentially drawn into and is sequentially discharged from the plurality of pump chambers;at least one of the receiving hole and the contact portion ...

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Номер записи: 88
08-02-2018 дата публикации

Variable Volume Ratio Compressor

Номер: US20180038369A1
Автор: DOEPKER Roy J., PEREVOZCHIKOV Michael M.
Принадлежит: EMERSON CLIMATE TECHNOLOGIES, INC.

A compressor may include a shell, first and second scroll members, a partition plate and a bypass valve member. The shell defines a discharge-pressure region and a suction-pressure region. The first scroll member is disposed within the shell and may include a first end plate having a discharge passage, and first and second bypass passages extending through the first end plate. The partition plate is disposed within the shell and separates the discharge-pressure region from the suction-pressure region and includes an opening in communication with the discharge-pressure region. The bypass valve member is movable between a first position restricting fluid flow through at least one of the first and second bypass passages and the opening and a second position in allowing fluid flow through the at least one of the first and second bypass passages and the opening. 1. A compressor comprising:a shell defining a discharge-pressure region and a suction-pressure region;a first scroll member disposed within the shell and including a first end plate and a first spiral wrap extending from a first side of the first end plate, the first end plate including a discharge passage, a first bypass passage and a second bypass passage extending through the first side and a second side of the first end plate;a second scroll member including a second spiral wrap cooperating with the first spiral wrap to define first and second fluid pockets therebetween, the first and second fluid pockets in communication with the first and second bypass passages, respectively;a partition plate disposed within the shell and separating the discharge-pressure region from the suction-pressure region, the partition plate including an opening in communication with the discharge-pressure region, the first scroll member including a hub through which the discharge passage extends;a bypass valve member disposed around the hub and movable between a first position in which the bypass valve member restricts fluid flow ...

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Номер записи: 89
08-02-2018 дата публикации

Variable Volume Ratio Compressor

Номер: US20180038370A1
Автор: Michael M. Perevozchikov, Roy J. Doepker
Принадлежит: Emerson Climate Technologies Inc

A compressor may include a shell, first and second scroll members, a partition plate and a bypass valve member. The shell defines a discharge-pressure region and a suction-pressure region. The first scroll member is disposed within the shell and may include a first end plate having a discharge passage, and first and second bypass passages extending through the first end plate. The partition plate is disposed within the shell and separates the discharge-pressure region from the suction-pressure region and includes an opening in communication with the discharge-pressure region. The bypass valve member is movable between a first position restricting fluid flow through at least one of the first and second bypass passages and the opening and a second position in allowing fluid flow through the at least one of the first and second bypass passages and the opening.

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Номер записи: 90
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: 91
24-02-2022 дата публикации

Intelligent oil extraction system using all-metal screw pump

Номер: US20220056791A1
Автор: Guang Zhou, Haiyang Liang, Xuelei Sun, Xueling Sun, Zhihai ZHANG
Принадлежит: Wuxi Hengxin Beishi Technology Co Ltd

An intelligent oil extraction system using an all-metal screw pump includes: the all-metal screw pump, an oil collecting unit (43), and a steam generating unit (45); wherein an internal threaded curve surface and an external threaded curve surface of the all-metal screw pump are both tapered spiral structures with equal tapers; the oil extraction system comprises a lifting mechanism and monitoring and control mechanism; the monitoring and control mechanism comprises: a controller (34), a torque sensor (35), a flow sensor (36), a pressure sensor (39), a liquid level detector (38), and a backup power source (37); the controller (34) is electrically connected to the torque sensor (35), the flow sensor (36), the pressure sensor (39), the liquid level detector (38), the backup power source (37), a drive motor (48), a servo motor (33), a first valve and a second valve. The present invention can solve the technical problems such as short service life, high energy consumption, low pump efficiency, sand jam, and low intelligence of the conventional metal screw pumps.

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Номер записи: 92
06-02-2020 дата публикации

PUMP RIPPLE PRESSURE MONITORING FOR INCOMPRESSIBLE FLUID SYSTEMS

Номер: US20200040889A1
Автор: SMITH Alan
Принадлежит: Rolls-Royce Corporation

Systems and methods are disclosed of monitoring performance of an incompressible fluid system. The system has a positive displacement pump and a high bandwidth pressure sensor. A method comprises sensing a pressure of the fluid with the pressure sensor, determining pump ripple frequency and hence the speed of the positive displacement pump, calculating the pump flow rate, determining a flow restriction of the fluid system based on the pressure and flow, and assessing or trending the fluid system flow restriction. 1. In an incompressible fluid system having a positive displacement pump and a pressure sensor , a method of monitoring performance of the fluid system , the method comprising:sensing a pressure of the fluid with the pressure sensor;determining from the pressure sensing a ripple frequency of the fluid and a speed of the positive displacement pump;calculating from the speed of the positive displacement pump a flow rate of the fluid induced by the positive displacement pump;determining, based on the calculated flow rate and the sensed pressure, a flow restriction of the fluid system; andassessing the fluid system for an excessive flow restriction condition using the determined flow restriction.2. The method of wherein the step of assessing the fluid system for an excessive flow restriction condition using the determined flow restriction comprises:comparing the determined flow restriction of the fluid system to a baseline flow restriction; andindicating an excessive flow restriction when the determined flow restriction exceeds the baseline flow restriction by a first predetermined amount.3. The method of further comprising:providing an indication to an operator of the fluid system to inspect a filter of the fluid system when the determined flow restriction exceeds the baseline flow restriction by a second predetermined amount.4. The method of wherein the step of assessing the fluid system for an excessive flow restriction condition using the determined flow ...

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Номер записи: 93
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: 94
18-02-2016 дата публикации

LUBRICANT VANE PUMP

Номер: US20160047280A1
Автор: ARMENIO GIACOMO, LAZZERINI MASSIMILIANO, Novi Nicola
Принадлежит:

A lubricant vane pump for providing a pressurized lubricant for an internal combustion engine includes a pump housing, a pump chamber, a shiftable control ring comprising a pressure-relief-valve, a pump rotor, a pretensioning element which pushes the control ring into a high pumping volume position, a control chamber, and a pump outlet cavity fluidically connected to the control chamber. The pump chamber comprises pump compartments which rotate from a charge to discharge zone. The control ring envelops the pump chamber. The pump rotor comprises radially slidable vanes which rotate in the control ring to provide the pump chamber with the pump compartments. A high lubricant pressure in the control chamber moves the control ring into a low pumping volume direction against the pretensioning element. The pressure-relief-valve of the control ring connects or disconnects the control chamber with one of the pump compartments between the charge zone and the discharge zone. 19-. (canceled)10. A lubricant vane pump for providing a pressurized lubricant for an internal combustion engine , the lubricant vane pump comprising:a pump housing;a pump chamber arranged in the pump housing, the pump chamber comprising a plurality of pump compartments configured to rotate from a charge zone to a discharge zone;a shiftable control ring comprising a pressure-relief-valve arranged in the pump housing, the shiftable control ring being configured to envelop the pump chamber;a pump rotor arranged in the pump housing, the pump rotor comprising radially slidable vanes which are configured to rotate in the shiftable control ring so as to provide the pump chamber with the plurality of rotating pump compartments;a pretensioning element configured to push the shiftable control ring into a high pumping volume position;a control chamber, wherein a high lubricant pressure in the control chamber moves the shiftable control ring into a low pumping volume direction against the pretensioning element; anda ...

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Номер записи: 95
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: 96
16-02-2017 дата публикации

MULTI-STAGE PUMP ASSEMBLY HAVING A PRESSURE CONTROLLED VALVE FOR CONTROLLING RECIRCULATION OF FLUID FROM THE PUMP STAGE OUTLET TO THE PUMP STAGE INLET

Номер: US20170045048A1
Автор: Denny Mark Joseph
Принадлежит: BP Exploration Operating Company Limited

The invention provides a pump comprising a pump inlet, a pump outlet, at least two threaded rotors and a pressure controlled valve, the pressure controlled valve being capable of controlling re-circulation of fluid from the pump outlet to the pump inlet. The pressure controlled valve can be a control valve. The invention also provides a multiple stage pump assembly comprising at least two pumps arranged in series, wherein at least one of the pumps is the aforementioned pump. 137.-. (canceled)38. A multiple stage pump assembly comprising at least two pumps arranged in series , wherein at least the second and each subsequent pump comprises a pump inlet , a pump outlet , at least two threaded rotors and a pressure controlled valve , the pressure controlled valve configured to control re-circulation of fluid from the pump outlet to the pump inlet.39. The assembly of claim 38 , wherein the pressure controlled valve is configured to control the rate of fluid flow there-through in proportion to the gas to liquid ratio of a fluid being pumped by the pump in use.40. The assembly of claim 38 , wherein the pressure controlled valve is a control valve.41. The assembly of claim 38 , further comprising a conduit connecting the pump outlet to the pump inlet claim 38 , wherein the conduit is configured to flowre-circulated fluid from the pump outlet to the pump inlet.42. The assembly of claim 41 , wherein the pressure controlled valve is located wholly or partly within the conduit or adjacent one or other end of the conduit.43. The assembly of claim 41 , further comprising a recess in the pump outlet configured to selectively flow liquid rather than gas from an enclosure in which the threaded rotors are located to the conduit.44. The assembly of claim 38 , wherein the pressure controlled valve is configured to respond to an absolute pressure difference between the pump outlet and the pump inlet such that the valve permits fluid to flow there-through when the absolute pressure ...

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Номер записи: 97
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: 98
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: 99
14-02-2019 дата публикации

Hydraulic control device

Номер: US20190048899A1
Автор: Shinichi Hirai
Принадлежит: Honda Motor Co Ltd

In a hydraulic control device, when it is detected that a pressure of first oil (output pressure) detected by an output pressure sensor pulsates, a transmission control unit as a TCU stops driving of a second pump or decreases a rotation number of the second pump as a first operation. Alternatively, when it is detected that the output pressure pulsates, the TCU increases the rotation number of the second pump to a rotation number (for example, maximum rotation number) that is higher than a target rotation number as a second operation.

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Номер записи: 100