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20-02-2017 дата публикации

Устройство для диагностирования приборов системы питания, электростартерного пуска, информационно-измерительной системы, системы электроснабжения дизеля

Номер: RU0000168784U1
Автор: Анатолий Игоревич Винник, Антон Михайлович Смирнов, Виталий Викторович Нечаев, Николай Владимирович Солянов, Юрий Федорович Белкин
Принадлежит: Федеральное государственное казенное военное образовательное учреждение высшего профессионального образования "ВОЕННАЯ АКАДЕМИЯ МАТЕРИАЛЬНО-ТЕХНИЧЕСКОГО ОБЕСПЕЧЕНИЯ имени генерала армии А.В. Хрулева"

Полезная модель относится к устройствам для измерения параметров системы питания, системы электростартерного пуска, информационно-измерительной системы, системы электроснабжения дизеля и может быть использована для диагностирования топливной аппаратуры, стартера и стартерной цепи, тахометра, генератора переменного тока.Разработка настоящей полезной модели направлена на расширение числа диагностируемых параметров систем дизеля.Решение поставленной задачи достигается тем, что в устройство, содержащее основание стенда, на котором размещены испытываемый топливный насос высокого давления (ТНВД), форсунки, мерные цилиндры, распределитель топлива, верхний и нижний топливные баки, подкачивающий насос стенда, топливный фильтр, демпфер манометра, манометр, топливный цилиндр, через который проходят топливопроводы высокого давления (ТВД), причем топливный цилиндр соединен с аккумулятором высокого давления топлива и с гасителем гидравлических колебаний топлива в цилиндре, а на валу испытываемого ТНВД размещен диск с установленным на нем постоянным магнитом управления открытием золотника гасителя гидравлических колебаний топлива и постоянным магнитом отметчика верхней мертвой точки (ВМТ) первого цилиндра; электрическую схему регистрации изменения давления топлива в ТВД, содержащую датчик давления топлива, размещенный в топливном цилиндре и соединенный включателем и электрическими цепями с усилителем тока, аналого-цифровым преобразователем (АЦП), портом и компьютером, причем компьютер соединен с дисплеем; электрическую схему отметчика ВМТ первого цилиндра, содержащую электрическую катушку, размещенную на РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 168 784 U1 (51) МПК G01M 15/00 (2006.01) F02M 65/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21)(22) Заявка: 2016120148, 24.05.2016 (24) Дата начала отсчета срока действия патента: 24.05.2016 20.02.2017 (45) Опубликовано: 20.02.2017 Бюл. № 5 Адрес для переписки ...

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23-01-2018 дата публикации

Топливный насос высокого давления для сравнительных испытаний плунжерных пар на различных видах дизельного топлива

Номер: RU0000176574U1
Автор: Александр Петрович Уханов, Алексей Леонидович Хохлов, Анатолий Александрович Гузяев, Антон Алексеевич Хохлов, Денис Александрович Уханов, Евгений Геннадьевич Ротанов
Принадлежит: Федеральное государственное бюджетное образовательное учреждение высшего образования "Ульяновская государственная сельскохозяйственная академия имени П.А. Столыпина"

Полезная модель относится к области двигателестроения и может быть использована в испытаниях топливной аппаратуры дизельных двигателей. Топливный насос высокого давления для сравнительных испытаний плунжерных пар на различных видах дизельного топлива содержит корпус, насосные секции с втулками и плунжерами, перепускные клапаны, топливопроводы низкого давления. Каждая насосная секция выполнена индивидуально и изолирована друг от друга. С каждой насосной секцией соединен топливопровод низкого давления, электрический насос низкого давления. Применение устройства позволит создать одинаковые условия для сравнительных испытаний плунжерных пар ТНВД на различных видах дизельного топлива (более двух видов). РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 176 574 U1 (51) МПК F02M 65/00 (2006.01) G01M 10/00 (2006.01) F02M 59/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК F02M 65/00 (2017.08); G01M 10/00 (2017.08); F02M 59/02 (2017.08) (21)(22) Заявка: 2016151839, 27.12.2016 (24) Дата начала отсчета срока действия патента: Дата регистрации: 23.01.2018 (45) Опубликовано: 23.01.2018 Бюл. № 3 Адрес для переписки: 432017, г. Ульяновск, б-р Новый Венец, 1, ФГБОУ ВО Ульяновская ГСХА, патентоведу на N 16 - 122 (73) Патентообладатель(и): Федеральное государственное бюджетное образовательное учреждение высшего образования "Ульяновская государственная сельскохозяйственная академия имени П.А. Столыпина" (RU) (56) Список документов, цитированных в отчете о поиске: WO 2016128126 A1, 18.08.2016. RU U 1 1 7 6 5 7 4 R U (54) Топливный насос высокого давления для сравнительных испытаний плунжерных пар на различных видах дизельного топлива (57) Реферат: Полезная модель относится к области насосная секция выполнена индивидуально и двигателестроения и может быть использована в изолирована друг от друга. С каждой насосной испытаниях топливной аппаратуры дизельных секцией соединен топливопровод низкого двигателей. Топливный насос высокого ...

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11-01-2019 дата публикации

Переходное устройство для диагностирования электрогидравлических форсунок дизеля

Номер: RU0000186175U1
Автор: Анатолий Николаевич Крайнов, Евгений Викторович Волков, Илья Евгеньевич Молоков, Константин Николаевич Чечулин, Юрий Валентинович Михалев
Принадлежит: Федеральное государственное казенное военное образовательное учреждение высшего образования "ВОЕННАЯ АКАДЕМИЯ МАТЕРИАЛЬНО-ТЕХНИЧЕСКОГО ОБЕСПЕЧЕНИЯ имени генерала армии А.В. Хрулева"

Полезная модель относится к области транспортного машиностроения, в частности к испытательной аппаратуре, а именно к технологическому оборудованию, обеспечивающему диагностирование дизелей. Технической задачей полезной модели, является расширение диапазона диагностируемых силовых установок. Техническая задача решается за счет того, что предложено переходное устройство для диагностирования электрогидравлических форсунок дизеля, состоящее из: сочлененных между собой металлической соединительной головки с топливным каналом, гибкой резиновой трубки и пластикового штуцера. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 186 175 U1 (51) МПК F02M 65/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК F02M 65/006 (2018.08) (21)(22) Заявка: 2018120045, 30.05.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: 11.01.2019 (45) Опубликовано: 11.01.2019 Бюл. № 2 Адрес для переписки: 199034, Санкт-Петербург, наб. Адмирала Макарова, 8, "Военная академия материальнотехнического обеспечения имени генерала армии А.В. Хрулева", ООНР Неговора А.В. Техническое обслуживание и диагностика топливной аппаратуры автотракторных дизелей: Учебное пособие. - Уфа: БГАУ, 2008. - стр. 159. SU 1086206 A1, 15.04.1984. KR 1020150136385 A, 07.12.2015. CN 205654474 U, 19.10.2016. GB 2332927 A, 07.07.1999. U 1 1 8 6 1 7 5 (56) Список документов, цитированных в отчете о поиске: Габитов И.И., Грехов Л.В., (54) ПЕРЕХОДНОЕ УСТРОЙСТВО ДЛЯ ДИАГНОСТИРОВАНИЯ ЭЛЕКТРОГИДРАВЛИЧЕСКИХ ФОРСУНОК ДИЗЕЛЯ (57) Реферат: Полезная модель относится к области Техническая задача решается за счет того, что транспортного машиностроения, в частности к предложено переходное устройство для испытательной аппаратуре, а именно к диагностирования электрогидравлических технологическому оборудованию, форсунок дизеля, состоящее из: сочлененных обеспечивающему диагностирование дизелей. между собой металлической соединительной Технической задачей полезной модели, ...

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23-01-2020 дата публикации

Устройство для измерения хода подпружиненной иглы форсунки

Номер: RU0000195339U1
Автор: Виктор Федорович Тарута, Виталий Анатольевич Минаков, Владимир Аркадьевич Литневский, Мария Викторовна Глухова
Принадлежит: Федеральное государственное бюджетное образовательное учреждение высшего образования "Омский государственный университет путей сообщения"

Полезная модель относится к двигателестроению, в частности топливовпрыскивающей аппаратуре двигателей внутреннего сгорания, и может быть использована при испытаниях и диагностике, а именно определения технического состояния топливных форсунок.В отличие от существующих методов и средств контроля, применение устройства для измерения хода подпружиненной иглы форсунки позволит повысить точность измерения и сократить время испытания форсунки за счет юстировки измерительного устройства датчика хода иглы форсунки на работающем дизеле. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 195 339 U1 (51) МПК F02M 65/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК F02M 65/00 (2019.08); F02M 65/005 (2019.08) (21)(22) Заявка: 2019116443, 28.05.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: 23.01.2020 Адрес для переписки: 644046, г. Омск, пр-кт Маркса, 35, ФГБОУ ВО "Омский государственный университет путей сообщения" (56) Список документов, цитированных в отчете о поиске: SU 1222880 A1, 07.04.1986. SU 1328573 A1, 07.08.1987. DE 3244245 A, 30.05.1984. US 6513502 B1, 04.02.2003. U 1 1 9 5 3 3 9 R U Стр.: 1 U 1 (54) Устройство для измерения хода подпружиненной иглы форсунки (57) Реферат: Полезная модель относится к В отличие от существующих методов и средств двигателестроению, в частности контроля, применение устройства для измерения топливовпрыскивающей аппаратуре двигателей хода подпружиненной иглы форсунки позволит внутреннего сгорания, и может быть повысить точность измерения и сократить время использована при испытаниях и диагностике, а испытания форсунки за счет юстировки именно определения технического состояния измерительного устройства датчика хода иглы топливных форсунок. форсунки на работающем дизеле. 1 9 5 3 3 9 (45) Опубликовано: 23.01.2020 Бюл. № 3 (73) Патентообладатель(и): Федеральное государственное бюджетное образовательное учреждение высшего образования "Омский государственный ...

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Номер записи: 4
05-05-2021 дата публикации

Устройство для испытания топливных насосов высокого давления и форсунки дизельного двигателя

Номер: RU0000204074U1
Автор: Александр Алексеевич Савочкин, Александр Викторович Никитин, Александр Павлович Репях, Алексей Сергеевич Мутовкин, Антон Сергеевич Кучерявый, Иван Сергеевич Костин, Михаил Сергеевич Черепанов, Николай Иванович Перебатов
Принадлежит: ФЕДЕРАЛЬНОЕ ГОСУДАРСТВЕННОЕ КАЗЕННОЕ ВОЕННОЕ ОБРАЗОВАТЕЛЬНОЕ УЧРЕЖДЕНИЕ ВЫСШЕГО ОБРАЗОВАНИЯ Военная академия Ракетных войск стратегического назначения имени Петра Великого МИНИСТЕРСТВА ОБОРОНЫ РОССИЙСКОЙ ФЕДЕРАЦИИ

Предлагаемая полезная модель обеспечивает расширение функциональных возможностей устройства по диагностированию приборов топливной системы дизелей, заключающееся в возможности использования в полевых условиях в подвижных средствах технического обслуживания и ремонта, упрощение конструкции, уменьшение габаритов, снижение стоимости комплекта оборудования, повышение производительности труда.Устройство представляет собой раму с плитой 1, на которую устанавливают ТНВД 2, три эталонные форсунки 3, регулирующее устройство 4, электродвигатель 5 и обеспечивает возможность дополнительного испытания и регулировки форсунок дизельного двигателя. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 204 074 U1 (51) МПК F02M 65/00 (2006.01) G01M 15/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК F02M 65/00 (2021.02); G01M 15/02 (2021.02) (21)(22) Заявка: 2020144050, 28.12.2020 (24) Дата начала отсчета срока действия патента: Дата регистрации: 05.05.2021 (45) Опубликовано: 05.05.2021 Бюл. № 13 2 0 4 0 7 4 R U (56) Список документов, цитированных в отчете о поиске: RU 161694 U1, 27.04.2016. RU 2289720 C2, 20.12.2006. RU 2015109222 A, 10.10.2016. RU 2648175 C1, 22.03.2018. US 4497201 A1, 05.02.1985. CN 201650537 U, 24.11.2010. (54) УСТРОЙСТВО ДЛЯ ИСПЫТАНИЯ ТОПЛИВНЫХ НАСОСОВ ВЫСОКОГО ДАВЛЕНИЯ И ФОРСУНКИ ДИЗЕЛЬНОГО ДВИГАТЕЛЯ (57) Реферат: Предлагаемая полезная модель обеспечивает стоимости комплекта оборудования, повышение расширение функциональных возможностей производительности труда. устройства по диагностированию приборов Устройство представляет собой раму с плитой топливной системы дизелей, заключающееся в 1, на которую устанавливают ТНВД 2, три возможности использования в полевых условиях эталонные форсунки 3, регулирующее устройство в подвижных средствах технического 4, электродвигатель 5 и обеспечивает обслуживания и ремонта, упрощение возможность дополнительного испытания и конструкции, уменьшение габаритов, снижение ...

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Номер записи: 5
24-08-2021 дата публикации

Установка для гидравлического нагружения компонентов систем common rail

Номер: RU0000206134U1
Автор: Антон Владимирович Звягин, Владислав Октябревич Свещинский, Илья Александрович Зимирев, Сергей Павлович Кулманаков, Сергей Петрович Бобров
Принадлежит: Общество с ограниченной ответственностью Управляющая компания "Алтайский завод прецизионных изделий"

Полезная модель включает устройство для подачи технологической жидкости из емкости к усилителям давления, усилители давления, систему трубопроводов, связывающих между собой компоненты устройства и испытуемое изделие, систему управления работой отдельных компонентов устройства, датчики. Для привода усилителей давления и нагружения компонента системы Common Rail используется одна технологическая жидкость, представляющая собой жидкий углеводородный продукт, не вызывающий коррозию стальных деталей, например, калибровочная жидкость, имеющая плотность 825 кг/м3при 15°С и кинематическую вязкость 2,53 мм2/с при 40°С. Для привода всех используемых усилителей давления используется один стендовый насос, например, топливный насос высокого давления системы Common Rail модельного ряда «СР» производства фирмы Robert Bosch GmbH. В качестве усилителей давления используются электроуправляемые мультипликаторы с одинаковыми коэффициентами мультипликации (усиления), например, электроуправляемые насос-форсунки. Перед электроуправляемыми мультипликаторами установлены нормально закрытые электроклапаны. В качестве электроклапанов могут применяться, в том числе, электроуправляемые форсунки систем Common Rail. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 206 134 U1 (51) МПК F02M 65/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК F02M 65/00 (2021.05) (21)(22) Заявка: 2021116747, 07.06.2021 (24) Дата начала отсчета срока действия патента: Дата регистрации: 24.08.2021 (45) Опубликовано: 24.08.2021 Бюл. № 24 U 1 2 0 6 1 3 4 R U (56) Список документов, цитированных в отчете о поиске: RU 2649619 C1, 04.04.2018. CN 202851227 U, 03.04.2013. CN 200982262 Y, 28.11.2007. CN 1851256 A, 25.10.2006. DE 102005028811 A1, 04.01.2007. RU 2370745 C1, 20.10.2009. (54) УСТАНОВКА ДЛЯ ГИДРАВЛИЧЕСКОГО НАГРУЖЕНИЯ КОМПОНЕНТОВ СИСТЕМ COMMON RAIL (57) Реферат: Полезная модель включает устройство для используемых усилителей давления используется подачи ...

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Номер записи: 6
08-11-2021 дата публикации

Поворотная платформа испытательной установки авариестойкой топливной системы вертолета

Номер: RU0000207621U1
Автор: Денис Игоревич Смагин, Николай Владимирович Микрюков, Роман Сергеевич Савельев, Сергей Васильевич Грачев
Принадлежит: Акционерное общество "Опытное конструкторское бюро "Кристалл", Федеральное государственное бюджетное образовательное учреждение высшего образования "Московский авиационный институт (национальный исследовательский университет)"

Полезная модель относится к испытательной технике и может быть использована при проведении стендовых испытаний для полноразмерной имитации режимов работы в ожидаемых условиях эксплуатации топливной системы вертолетов во время выполнения ими маневров в течение полета. Поворотная платформа испытательной установки авариестойкой топливной системы вертолета включает основание с опорами, на которых закреплена прямоугольной формы поворотная рама, для имитации наклона по тангажу, привод для поворота рамы, топливные трубопроводы и датчики углов поворота рамы. Согласно полезной модели, опоры расположены на продольных сторонах основания симметрично друг другу и выполнены в виде блока балок, включающие вертикальную балку, в верхней части связанную с раскосами и, и косую балку одним концом закрепленную на поперечной балке основания, а сверху связанную с вертикальной балкой опоры. Поворотная рама для имитации наклона по тангажу смонтирована в подшипниковых узлах и закрепленных в плоскости поперечной оси симметрии поворотной платформы, образуя внешнюю поворотную раму, на поперечных сторонах которой, в точках пересечения ее с продольной осью симметрии поворотной платформы и в ее плоскости, смонтированы подшипниковые узлы, и для установки в них внутренней поворотной рамы для возможности имитации наклона по крену. С внутренней стороны внутренней поворотной рамы по периметру расположены элементы крепления для испытуемых компонентов топливной системы вертолета. Внутренняя и внешняя поворотные рамы смонтированы таким образом, что их оси и вращения взаимно перпендикулярны и лежат в одной плоскости. Техническим результатом полезной модели является повышение достоверности полученных экспериментальных данных работы топливной системы вертолета при эволюциях последнего. 4 з.п. ф-лы, 6 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 207 621 U1 (51) МПК F02M 65/00 (2006.01) G01M 13/00 (2006.01) G01M 15/00 (2006.01) B64F 5/00 (2006.01) B64F 5/60 (2017.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ ...

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Номер записи: 7
08-03-2012 дата публикации

Rail connection restoration and method for cleaning fuel injector without disassembly

Номер: US20120055514A1
Автор: Daryl Villa, Martin Heiner Luedicke, Philip James Charles Vince
Принадлежит: Individual

A method for restoring a rail connection interface of a fuel injector and/or a method for cleaning the fuel injector. The method comprises inspecting a rail connection interface of the fuel injector, and restoring the rail connection interface. The method may further comprise connecting a flush line to at least one of a nozzle or a fuel inlet hole of a cone nut of the fuel injector, pressurizing a cleaning solution, and supplying the pressurized cleaning solution to the flush line.

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Номер записи: 8
19-04-2012 дата публикации

Fail-safe controller for direct injection engine

Номер: US20120095669A1
Автор: Hiroshi Katsurahara
Принадлежит: Denso Corp

A fuel pressure varies according to whether a fuel pressure sensor and a high-pressure pump have a malfunction or not. In view of this, a first threshold Perr 1 is defined for determining whether the fuel pressure sensor has a malfunction and a second threshold Perr 2 is defined for determining whether the high-pressure pump has a malfunction. The second threshold Perr 2 is greater than the first threshold Perr 1. By comparing a detection value of the fuel pressure sensor with the first and the second threshold, a malfunction in the fuel pressure sensor and a malfunction in the high-pressure pump are distinguished from each other. A first fail-safe control or a second fail-safe control is executed according to a portion having a malfunction.

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Номер записи: 9
09-08-2012 дата публикации

System and method for measuring injection processes in a combustion engine

Номер: US20120203447A1
Автор: Heribert Kammerstetter
Принадлежит: AVL List GmbH

A system for measuring an injection process in a combustion engine includes a tank configured to hold a fuel. A storage container is configured to hold a compressed fuel. At least one injection valve is arranged at the storage container. A fuel line in which a fuel conveying pump and a high-pressure fuel pump are arranged. The fuel conveying pump and the high-pressure fuel pump are configured to convey the fuel into the storage container. A first pressure sensor is configured to measure a pressure in the storage container. A detection device is configured to detect control data of the at least one injection valve. A measuring device is arranged in the fuel line. The measuring device is configured to measure a temporally resolved volumetric or gravimetric flow process. A processor is connected to the measuring device and to the first pressure sensor via a data transmission line.

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Номер записи: 10
29-11-2012 дата публикации

System and method for measuring injection processes

Номер: US20120297867A1
Автор: Heribert Kammerstetter, Manfred Werner, Rainer Metzler
Принадлежит: AVL List GmbH

A system for measuring an injection process includes a measurement chamber filled with a fluid. An injection valve injects the fluid into the measurement chamber. A piston is arranged in the measurement chamber. A sensor generates a voltage which is a measure of a piston travel. The sensor is connected with an evaluation unit which continuously detects the piston travel in the measurement chamber. A rotary displacement pump arranged in a bypass channel to the measurement chamber is driven dependent on an existing volume difference. A pressure sensor is arranged in the measurement chamber. A heating element and/or a cooling device is/are arranged at the measurement chamber and is/are actuated by a controller so that an amount of energy introduced by the fluid injected by the injection valve and an amount of energy introduced by the heating element and/or the cooling device is substantially constant for every injection.

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Номер записи: 11
27-12-2012 дата публикации

Fuel-injection-condition estimating apparatus

Номер: US20120330576A1
Автор: Naoki MIKAMI
Принадлежит: Denso Corp

A fuel-injection-condition estimating apparatus is applied to a fuel injection system which includes a fuel injector injecting a fuel accumulated in an accumulator and a fuel pressure sensor detecting a fuel pressure in a fuel supply passage from the accumulator to an injection port of the fuel injector. The fuel-injection-condition estimating apparatus includes: a fuel-pressure-waveform detecting portion which detects a variation in the fuel pressure as a fuel pressure waveform based on a detection value of the fuel pressure sensor; and an injection-rate waveform computing portion which computes an injection-rate waveform indicative of a variation in an injection-rate based on the fuel pressure waveform. The injection-rate waveform computing portion computes an ascending-waveform portion where the injection-rate is ascending due to a fuel injection in such a manner that an injection-rate ascending speed becomes slower at a specified point on the ascending-waveform portion.

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Номер записи: 12
02-05-2013 дата публикации

ELECTRIC ACTUATION OF A VALVE BASED ON KNOWLEDGE OF THE CLOSING TIME OF THE VALVE

Номер: US20130104636A1
Автор: Achleitner Erwin, Beer Johannes
Принадлежит:

A method is provided for determining a time duration for an electric actuation of a valve which has a coil drive, in particular of a direct-injection valve for an internal combustion engine. The method may include a deactivation of a current flow through a coil of the coil drive, such that the coil is in a currentless state, a detection of a time profile of a voltage induced in the currentless coil, a determination of the closing time of the valve on the basis of the detected time profile, and a determination of a time duration of the electric actuation of the valve for a future injection process on the basis of the determined closing time. A corresponding device and a computer program for carrying out the described method are also disclosed. 1. A method for determining a duration for electric actuation of a valve comprising a coil drive , in particular of a direct injection valve for an internal combustion engine , the method comprising:deactivating a current flow through a coil of the coil drive such that the coil is rendered currentless,detecting a time profile of a voltage induced in the currentless coil,determining a closing time of the valve based on the detected time profile, anddetermining a duration of an electric actuation of the valve for a future injection process based on the determined closing time.2. The method of claim 1 , wherein the determination of the closing time comprises calculating a time derivative of the detected time profile of the voltage induced in the currentless coil.3. The method of claim 1 , wherein the determination of the closing time comprises comparing the detected time profile of the voltage induced in the coil with a reference voltage profile.4. The method of claim 3 , wherein the reference voltage profile is determined by securing a magnet armature of the coil drive in a closed position of the valve and detecting a voltage induced in the currentless coil after the valve has been actuated electrically.5. The method of claim 3 , ...

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Номер записи: 13
16-05-2013 дата публикации

METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE

Номер: US20130118243A1
Автор: Jessen Holger, TIEBEL Wolfgang
Принадлежит: ROBERT BOSCH GMBH

In a method for operating an internal combustion engine having multiple cylinders, a cylinder to be checked is diagnosed for an injection quantity error. During a normal operation, a first air/fuel ratio is predefined for the multiple cylinders, and a first uneven running is ascertained. During an adjustment operation, a second air/fuel ratio for the cylinder to be checked is predefined during a number of working cycles. During the adjustment operation, a second uneven running is ascertained. The injection quantity error is ascertained for the cylinder to be checked as a function of the first uneven running and the second uneven running. 1. A method for diagnosing an injection quantity error of at least one selected cylinder in an internal combustion engine having multiple cylinders , comprising:predefining a respective first air/fuel ratio for each of the multiple cylinders during a normal operation;ascertaining a first uneven running during the normal operation;predefining, during an adjustment operation, a second air/fuel ratio for the selected cylinder for a predefined number of working cycles;ascertaining a second uneven running during the adjustment operation; andascertaining the injection quantity error for the selected cylinder as a function of the first uneven running and the second uneven running.2. The method as recited in claim 1 , wherein a change in uneven running is ascertained from the first uneven running and the second uneven running claim 1 , and wherein the injection quantity error is ascertained for the selected cylinder as a function of the ascertained change in uneven running with the aid of a previously ascertained characteristic curve.3. The method as recited in claim 1 , wherein the second air/fuel ratio is ascertained in an essentially fixed first ratio to the first air/fuel ratio claim 1 , and wherein the second air/fuel ratio has a smaller fuel content than the first air/fuel ratio.4. The method as recited in claim 3 , wherein during the ...

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Номер записи: 14
20-06-2013 дата публикации

Method for Adapting the Injection Characteristic of an Injection Valve

Номер: US20130152902A1
Автор: Brandt Martin, Radeczky Janos
Принадлежит: Continental Automotive GmbH

A method for adapting the injection characteristic of a fuel injection valve of an internal combustion engine to production-related tolerances is described. In the method, an injection quantity correction value is determined from the deviation of the idle travel and the deviation of the injection quantity of the injection valve before the operating phase of the injector. This injection quantity correction value is used to determine the injection-specific deviation of the injection quantity during the operating phase at the start of the operating phase of the injector in conjunction with the current deviation of the idle travel which is determined in the system. The injector-specific deviation of the injection quantity which is determined is used to correct the injection characteristic. As a result, changes in the injection quantity of an injector can be detected and corrected particularly precisely on the basis of production tolerances. 1. A method for adapting the injection characteristic to production-related tolerances , the injection characteristic representing a setpoint injection behavior of an injector arranged in an injection system of an internal combustion engine , the method comprising: determining an ACTUAL idle stroke of the injector;', 'determining a deviation of the ACTUAL idle stroke from a nominal idle stroke;', 'determining an ACTUAL injection quantity of the injector;', 'determining a deviation of the ACTUAL injection quantity from a nominal injection quantity;', 'determining an injection quantity correction value based on the idle stroke deviation and the injection quantity deviation; and, 'before an operating phase of the injector using the determined injection quantity correction value and the current idle stroke deviation to determine an injector-specific injection quantity deviation during the operating phase; and', 'using the determined injector-specific injection quantity deviation to correct the injection characteristic., 'at the start of ...

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Номер записи: 15
11-07-2013 дата публикации

Test station for fluid pumps and fluid injectors

Номер: US20130174655A1
Автор: Dirk Schoenfeld, Karl Kastner, Kurt Blank
Принадлежит: ROBERT BOSCH GMBH

A test station for testing a fluid pump and/or a fluid injector has a fluid-pump receiving device for accommodating a fluid pump, a fluid-injector receiving device for accommodating a fluid injector, a fluid line which hydraulically connects the fluid-pump receiving device to the fluid-injector receiving device and which enables a fluid flow from the fluid pump to the fluid injector during operation, a sealed cooling circuit through which coolant is circulating during operation, and a first heat exchanger, which is developed and disposed in the fluid line so as to have the fluid flow and the coolant flow pass through it during operation such that a heat transfer takes place between the fluid flow and the coolant flow.

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Номер записи: 16
01-08-2013 дата публикации

Valve assembly for an injection valve, injection valve and method for assembling a valve assembly of an injection valve

Номер: US20130193239A1
Автор: Ivano Izzo, Licia Del Frate, Luca Matteucci, Marco Omeri
Принадлежит: Continental Automotive GmbH

A valve assembly for an injection valve and a method for assembling a valve assembly are provided. The valve assembly includes a valve body with a central longitudinal axis and having a cavity with a fluid inlet portion and a fluid outlet portion, an end portion being arranged at an axial end facing away from the fluid outlet portion, and a seat being arranged at an axial end of the valve body facing the fluid outlet portion. A valve needle is axially movable in the cavity and prevents a fluid flow through the fluid outlet portion in a closing position and releases the fluid flow through the flu-id outlet portion in further positions. The valve needle has an axial end facing away from the fluid outlet portion and facing the end portion, and a seat part resting on the seat of the valve body in the closing position. A contact area between the seat part and the seat of the valve body has a first outer diameter. The valve assembly includes an electro-magnetic actuator unit being designed to actuate the valve needle. A bellow arrangement includes a bellow and an end portion, the bellow is fixedly coupled to the end portion in a coupling area. The coupling area has a second outer diameter. The first outer diameter is equal to the second outer diameter.

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Номер записи: 17
29-08-2013 дата публикации

CETANE NUMBER ESTIMATION APPARATUS

Номер: US20130220006A1
Автор: Ito Yoshiyasu, Miyaura Takeshi, Tsuchiyama Makio
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A cetane number estimation apparatus injects fuel from a fuel injection valve in a diesel engine based on a target fuel injection amount, calculates an indicator of output torque of the diesel engine produced through fuel injection, and estimates the cetane number of the fuel using the calculated indicator. The cetane number estimation apparatus includes a pressure sensor for detecting fuel pressure varied by variation in actual fuel pressure in the fuel injection valve at the time of the fuel injection. The cetane number estimation apparatus also has a pressure correcting section that is adapted to calculate actual operating characteristics of the fuel injection valve based on a variation waveform of the detected fuel pressure and corrects the target fuel injection amount based on the difference between the calculated actual operating characteristics and prescribed reference operating characteristics. 1. A cetane number estimation apparatus that estimates the cetane number of fuel supplied to a diesel engine having a fuel injection valve , the apparatus comprising:a pressure sensor for detecting fuel pressure varied by variation in actual fuel pressure in the fuel injection valve at the time of the fuel injection from the fuel injection valve;a pressure correcting section that is adapted to calculate actual operating characteristics of the fuel injection valve based on a variation waveform of the detected fuel pressure, and to correct the target fuel injection amount based on the difference between the calculated actual operating characteristics and prescribed reference operating characteristics; andan electronic control unit that is adapted to inject fuel from the fuel injection valve based on the corrected target fuel injection amount, calculate an indicator of output torque of the diesel engine produced through fuel injection, and estimate the cetane number of the fuel based on the calculated indicator of the output torque.2. The cetane number estimation ...

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Номер записи: 18
29-08-2013 дата публикации

Method for Monitoring the Condition of a Piezo Injector of a Fuel Injection System

Номер: US20130226472A1
Автор: Robert Hoffmann
Принадлежит: Continental Automotive GmbH

A method for monitoring the condition of a piezoinjector of a fuel injection system is disclosed. The fuel injection is carried out in injection cycles, each of which comprises a filling phase, a holding phase, and an emptying phase. The discharge resistance is ascertained during the holding phase of the piezoinjector. Conclusions about the working order of the piezoinjector are drawn using the ascertained discharge resistance.

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Номер записи: 19
17-10-2013 дата публикации

Common Rail System Fault Diagnostic Using Digital Resonating Filter

Номер: US20130275026A1
Автор: Daniel Reese Puckett, Frank Lombardi, Nandagopal Methil-Sudhakaran
Принадлежит: Caterpillar Inc

A common rail fuel system diagnostic algorithm is executed by an engine control and real time to detect and identify a faulty fuel system component. Rail pressure data is processed through a digital resonating filter having a resonance frequency corresponding to a fault signature. A peak magnitude and phase of the output from the digital resonating filter reveals a degradation level of a fuel injector, and a phase of the output identifies which fuel injector is faulted.

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Номер записи: 20
24-10-2013 дата публикации

METHOD FOR MANAGING THE OPERATION OF A FUEL METERING UNIT

Номер: US20130276522A1
Автор: CHALAUD Sebastien
Принадлежит: SNECMA

The principal object of the invention is a method for managing the operation of a metering unit of a turbomachine fuel injection system, characterised in that a channel of the metering unit is selected according to the reliability of the injection system's flowmeter, determined by reliability conditions of the flowmeter providing information as to whether or not there is confidence in the flowmeter. 12. A method for managing the operation of a metering unit of a turbomachine fuel injection system , wherein a channel of the metering unit is selected according to the reliability of the injection system's flowmeter , determined by reliability conditions of the flowmeter providing information as to whether or not there is confidence in the flowmeter , and wherein , when there is a lack of confidence in the flowmeter , the method includes a second step () of selection consisting in selecting:{'b': '4', '() the channel last selected the last time there was confidence in the flowmeter,'}or,{'b': '5', 'claim-text': [{'b': '6', "() the channel the position of which, converted by application of a dosing function into a theoretical fuel flow rate, gives the highest theoretical flow rate value within the flowmeter's bounds, i.e. an interval of flow rate values centred on the flow rate value measured by the flowmeter,"}, 'or,', {'b': '7', "() the channel the position of which, converted by application of a dosing function into a theoretical fuel flow rate, gives the highest theoretical flow rate value if neither channel gives a theoretical flow rate value within the flowmeter's bounds."}], '() if the said last selected channel is not defined2. A method according to claim 1 , wherein the method is implemented in the event of a discrepancy anomaly between the channels of the metering unit.31. A method according to claim 1 , wherein claim 1 , when there is confidence in the flowmeter claim 1 , the method includes a first step () of selection which consists in selecting the channel ...

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Номер записи: 21
31-10-2013 дата публикации

PISTON FUEL-INJECTOR DETECTION DEVICE

Номер: US20130283897A1
Автор: Huang Yuejin, Xun Zhao
Принадлежит: DALIAN DEXIN M & E TECHNOLOGY ENGINEERING CO., LTD

A piston fuel injector detecting device, comprising a base (), a perspective platform (), an observation cover (), a sliding groove (), an adjusting handle (), a conducting wire column (), a supporting plate (), a tact switch (), a limit plate (), an infrared-ray emitting tube (), an illuminating device () and a positioning pin (), wherein the base () is connected with the perspective platform () and the positioning pin (); the perspective platform () is connected with the observation cover () which is provided with the sliding groove (); the adjusting handle () is connected with the observation cover (); the conducting wire column () is vertically connected with the base () and is connected with the supporting plate () which is provided with the tact switch (); the conducting wire column () is connected with the limit plate () which is connected with the infrared-ray emitting tube () and the illuminating device (). The device can detect a is fuel injector without a trial injection by the fuel injector, and has advantages of no environmental pollution and low cost. 1. A piston fuel injector detecting device , comprising a base , a perspective platform , an observation cover , a sliding groove , an adjusting handle , a conducting wire column , a supporting plate , a tact switch , a limit plate , an infrared-ray emitting tube , an illuminating device and a positioning pin , wherein the base is connected with the perspective platform and the positioning pin; the perspective platform is connected with the observation cover which is provided with the sliding groove; the adjusting handle is connected with the observation cover; the conducting wire column is vertically connected with the base and is connected with the supporting plate which is provided with the tact switch; the conducting wire column is connected with the limit plate which is connected with the infrared-ray emitting tube and the illuminating device.2. The piston fuel injector detecting device according to ...

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Номер записи: 22
28-11-2013 дата публикации

Adjustable Doser Valve

Номер: US20130312836A1
Автор: Bill Crane, Gary Garcia, Jeff Tyler, Rob Gardner
Принадлежит: GW Lisk Co Inc

A doser valve with a seat comprising at least one axially located slot from an outer surface of the seat and at least one radial/tangential extending passage in fluid communication with the at least one axially located slot and an exit passage out of the seat.

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Номер записи: 23
09-01-2014 дата публикации

Method For Determining The Force Conditions At The Nozzle Needle Of A Directly Driven Piezo Injector

Номер: US20140007665A1
Автор: Hoffmann Robert, Katzenberger Michael, Ruscheinski Simon
Принадлежит:

A method is disclosed for determining the force acting on the nozzle needle of a directly driven piezo injector, in which an electrical voltage is built on the piezo actuator which drives the nozzle needle by means of a charging process. After the charging process has ended, the voltage at the piezo actuator is measured again. A voltage gradient is determined from consecutive voltage values. Conclusions of the force acting on the nozzle needle are drawn from the voltage gradients. 1. A method for determining a force acting on a nozzle needle of a directly driven piezo injector ,using a charging process to build up an electrical voltage at the piezo actuator for driving the nozzle needle,taking measurements of a voltage present at the piezo actuator at the end of the charging process,determining a voltage gradient from consecutive voltage measurements, anddetermining the force acting on the nozzle needle based on the voltage gradient.2. The method of claim 1 , wherein determining the force acting on the nozzle needle based on the voltage gradient comprises accessing a database in which force values are associated with each of a plurality of voltage gradients.3. The method of claim 1 , comprising determining a stroke of the nozzle needle based on the determined force.4. The method of claim 3 , wherein determining the stroke of the nozzle needle based on the determined force comprises accessing a database in which stroke values are associated with each of a plurality of force values.5. The method of claim 3 , comprising determining a fuel flow based on the determined nozzle needle stroke.6. The method of claim 5 , wherein determining the fuel flow based on the determined nozzle needle stroke comprises accessing a database in which fuel flow values are associated with each of a plurality of stroke values.7. The method of claim 6 , comprising determining a quantity of injected fuel based on the determined fuel flow.8. The method of claim 7 , comprising determining the ...

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Номер записи: 24
09-01-2014 дата публикации

Method for Determining the Opening Point in the Time of a Fuel Injector

Номер: US20140012485A1
Автор: Brandt Martin, Frankenberger Christian
Принадлежит:

A method for determining the opening point in time of a control valve having a coil drive of an indirectly driven fuel injector for an internal combustion engine of a motor vehicle may include: detecting the time curve of the current intensity of a current flowing through the coil drive, determining a current integral with respect to the detected current intensity as a function of the time and starting from a defined initial time, and determining a time at which the current integral reaches at least a predefined current integral reference value, wherein the determined time is the opening point in time of the control valve. A corresponding device and a computer program for determining the opening point in time of a control valve of an indirectly driven fuel injector are also disclosed. 1. A method for determining an opening point in time of a control valve of an indirectly controlled diesel fuel injector of a combustion engine of a motor vehicle , which control valve comprises a coil drive , the method comprising:determining a progression with respect to time of a current strength of a current flowing through the coil drive,calculating a current integral based on the determined current strength as a function of time commencing at a predetermined starting time, anddetermining a point in time at which the current integral achieves a predetermined current integral reference value, wherein the determined point in time is the opening point in time of the control valve.2. The method of claim 1 , further comprising determining the predetermined current integral reference value claim 1 , which comprises:detecting a point in time at which a pressure drops in a fuel line configured to supply fuel to the fuel injector, andmeasuring the current integral at the detected point in time, wherein the measured current integral is the predetermined current integral reference value.3. The method of claim 2 , wherein the predetermined current integral reference value is dependent upon ...

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Номер записи: 25
06-02-2014 дата публикации

SPRAY MEASURING METHOD AND SPRAY TEST APPARATUS USED IN THE METHOD

Номер: US20140033810A1
Автор: Kobayashi Tatsuo, Mori Sachio
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

Test liquid () including thermosetting resin is injected from an injection valve (). Light (L) is irradiated to a spray () of the test liquid () injected from the injection valve () as a treatment for producing a hardening effect to the thermosetting resin. Liquid drops in the spray () are hardened and collected as particles. Spray characteristics such as a particle size distribution of the injection valve or the like are analyzed by using the collected particles. 1. A spray measurement method comprising:a step of injecting test liquid including curable resin from an injection valve;a step of hardening liquid drops in a spray of the test liquid injected from the injection valve into particles by applying treatment for producing a hardening effect of the curable resin; anda step of analyzing spray characteristics of the injection valve using the particles hardened.2. The spray measurement method according to claim 1 , whereinthe curable resin is a resin in which a hardening effect is produced by irradiation of an energy beam, andthe energy beam is irradiated to the spray as the treatment in the step of hardening.3. The spray measurement method according to claim 2 , whereina thermosetting resin is used as the curable resin, andlight having a specific wavelength range is used as the energy beam.4. The spray measurement method according to claim 2 , whereinthe irradiation of the energy beam to the spray is set to a partial region of the spray with respect to an injecting direction of the test liquid from the injection valve.5. The spray measurement method according to claim 4 , whereinwhile an irradiating position of the energy beam is changed along the injecting direction, the particles are analyzed each time the irradiating position being changed.6. The spray measurement method according to claim 2 , whereinirradiation time of the energy beam is limited to a part of a period when the spray of the test liquid exists.7. The spray measurement method according to claim 2 ...

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Номер записи: 26
06-02-2014 дата публикации

Method for Detecting Faulty Components of an Electronically Regulated Fuel Injection System of an Internal Combustion Engine

Номер: US20140033811A1
Автор: Hoffmann Robert, Lehner Steffen, Ruscheinski Simon, Schwarte Anselm
Принадлежит: Continental Automotive GmbH

A method for detecting error-containing components of a piezo-injector in an internal combustion engine fuel-injection system is disclosed. The piezo-injector has a piezoelectric actuator and an injection needle driven thereby, and is configured for operation in a partial-stroke mode and a full-stroke mode. First, the internal combustion engine is brought to a defined operational point. Then, the time for the injector needle to strike its stop when said injector needle is opened, as well as the time for the injector needle to strike its needle seat again when said injector needle is closed, are measured. The measured times are compared to normal values determined at the test stand. Parameter(s) for the fuel-injection system are calculated, using different calculation models, and the results are stored. Finally, the calculated parameters of the different calculation models are compared to norm values determined at the test stand, and compared to one another. 1. A method for detecting faulty components of a piezo-injector of a fuel injection system of an internal combustion engine , the piezo-injector having a piezo-electric actuator and configured to drive a nozzle needle operation in a partial-stroke mode and a full-stroke mode , the method comprising:achieving a defined operating point of the internal combustion engine,measuring a first time after which the nozzle needle impacts against a stop during an opening of the nozzle needle, and a second time after which the nozzle needle impacts against a needle seat during a closing of the nozzle needle,comparing the first and second measured times with predetermined time values,calculating one or more parameters of the fuel injection system using multiple different calculation models, and storing the calculated parameters from the multiple calculation models,comparing the calculated parameters from the multiple calculation models with predetermined parameter values, andcomparing the calculated parameters from the ...

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Номер записи: 27
06-03-2014 дата публикации

Method of compensating for injector aging

Номер: US20140060495A1
Автор: James E. Korenchan, Michael James McNulty
Принадлежит: International Engine Intellectual Property Co LLC

A method of controlling a fuel injector is provided. Engine speed is monitored. Engine torque output is monitored. It is determined if the engine speed is within one of a plurality of predefined engine speed ranges. It is determined if the engine torque output is within one of a plurality of predefined engine torque output ranges. One of a plurality of injector coking factors is assigned based on the determined predefined engine speed range and the determined predefined engine torque output range. A total injector coking factor is calculated based upon total operating time within each of the plurality of injector coking factors. A duration of a fuel injection is increased based upon the calculated total injector coking factor.

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Номер записи: 28
03-01-2019 дата публикации

DETERGENT ADDITIVE FOR FUEL

Номер: US20190002780A1
Автор: PREVOST Julie
Принадлежит: TOTAL MARKETING SERVICES

The use of one or more copolymers as a detergent additive in a liquid fuel for internal combustion engines. The copolymer includes at least one repeat unit having an ester of alkyl or alkyl ester function and a repeat unit containing a nitrile group. 1. A method for keeping clean and/or for cleaning at least one of the internal parts of an internal combustion engine , said method comprising the introduction in said internal combustion engine of at least one copolymer comprising at least one repeating unit comprising an alkyl ester or alkylester function and one repeating unit comprising a nitrile group.2. The method as claimed in claim 1 , wherein the copolymer is a block copolymer comprising at least:{'sub': 'a', 'one block A consisting of a chain of structural units derived from an alkyl (meth)acrylate monomer (m), and'}{'sub': 'b', 'one block B consisting of a chain of structural units derived from an olefinic monomer (m) comprising a nitrile group.'}3. The method as claimed in claim 2 , wherein the block copolymer is obtained by block polymerization claim 2 , optionally followed by one or more post-functionalizations.4. The method as claimed in claim 1 , wherein the copolymer is obtained by copolymerization of at least:{'sub': 'a', 'one alkyl (meth)acrylate monomer (m), and'}{'sub': 'b', 'one olefinic monomer (m) comprising a nitrile group.'}5. The method as claimed in claim 2 , wherein the alkyl (meth)acrylate monomer (m) is chosen from Cto Calkyl (meth)acrylates.7. The method as claimed in claim 6 , wherein monomer (m) is chosen from acrylonitrile claim 6 , methacrylonitrile claim 6 , cyanostyrene and cyano-alpha-methylstyrene.8. The method as claimed in claim 7 , wherein the copolymer is a block copolymer comprising at least:{'sub': 'a', 'one block A consisting of a chain of structural units derived from the alkyl (meth)acrylate monomer (m), and'}{'sub': 1', 'b, 'one block Bconsisting of a chain of structural units derived from acrylonitrile (m), ...

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Номер записи: 29
07-01-2016 дата публикации

DETECTION OF AIR-FUEL RATIO RICH-LEAN IMBALANCE USING AN OXYGEN SENSOR

Номер: US20160003710A1
Автор: Frankowski David, Kalich Michael, Krishnamuthy Chandrasekar, Qiao Ningsheng
Принадлежит:

A system and method for detecting air-fuel ratio rich-lean imbalance in an automotive engine cylinder is provided. The system and the method are configured to receive an oxygen sensor voltage of an oxygen sensor. They also include filtering the oxygen sensor voltage to create a filtered oxygen sensor voltage. An engine speed and load are determined, and an air-fuel ratio imbalance detection threshold is determined based on the engine speed and the engine load. A rich-lean imbalance status is determined, the rich-lean imbalance status being non-normal if any portion of the filtered oxygen sensor voltage exceeds the air-fuel ratio imbalance detection threshold, and the rich-lean imbalance status being normal if none of the filtered oxygen sensor voltage exceeds the air-fuel ratio imbalance detection threshold. An engine control unit having several control logics to execute similar steps is also provided. 1. A method for detecting air-fuel ratio rich-lean imbalance in an automotive engine cylinder , the method comprising:receiving an oxygen sensor voltage of an oxygen sensor;filtering the oxygen sensor voltage to create a filtered oxygen sensor voltage;determining an engine speed and an engine load;determining an air-fuel ratio imbalance detection threshold, based on the engine speed and the engine load; anddetermining a rich-lean imbalance status, the rich-lean imbalance status being non-normal if any portion of the filtered oxygen sensor voltage exceeds the air-fuel ratio imbalance detection threshold, the rich-lean imbalance status being normal if none of the filtered oxygen sensor voltage exceeds the air-fuel ratio imbalance detection threshold.2. The method of claim 1 , further comprising determining a maximum oxygen sensor filtered voltage from the filtered oxygen sensor voltage claim 1 , wherein the step of determining a rich-lean imbalance status comprises determining whether the maximum oxygen sensor filtered voltage exceeds the air-fuel imbalance detection ...

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Номер записи: 30
02-01-2020 дата публикации

TECHNIQUES FOR MEASURING FUEL INJECTOR FLOW IRREGULARITY WITHOUT REMOVAL FROM VEHICLE

Номер: US20200003144A1
Автор: Faied Louai
Принадлежит:

Diagnostic systems and methods for a fuel system of an engine of a vehicle utilize a fuel rail pressure sensor, an engine speed sensor, an exhaust oxygen (O2) sensor, and a controller configured to perform a diagnostic routine for the fuel system during which fuel injectors of the fuel system do not need to be removed from the engine. The diagnostic routine comprises operating the engine at a set of predetermined operating points and detecting one or more malfunctions of one or more of the fuel injectors based on measured fuel rail pressure, measured engine speed, and measured O2 concentration at each of the set of predetermined operating points. Any fuel injector malfunctions detected during the diagnostic routine could be output to a diagnostic device operated by a human technician, e.g., in a single diagnostic report. 1. A diagnostic system for a fuel system of an engine of a vehicle , the diagnostic system comprising:a fuel rail pressure sensor configured to measure a fuel rail pressure indicative of a pressure of a fuel in a fuel rail of the fuel system, wherein the fuel rail provides the fuel to fuel injectors of the fuel system;an engine speed sensor configured to measure an engine speed indicative of a rotational speed of a crankshaft of the engine;an exhaust oxygen (O2) sensor configured to measure an O2 concentration indicative of an oxygen level of exhaust gas produced by the engine; and operating the engine at a set of predetermined operating points; and', 'detecting one or more malfunctions of one or more of the fuel injectors while the one or more fuel injectors remain installed on the engine based on the measured fuel rail pressure, the measured engine speed, and the measured O2 concentration at each of the set of predetermined operating points., 'a controller configured to perform a diagnostic routine for the fuel system during which the fuel injectors do not need to be removed from the engine, the diagnostic routine comprising2. The system of claim ...

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Номер записи: 31
03-01-2019 дата публикации

DETERMINING ARMATURE STROKE BY MEASURING MAGNETIC HYSTERESIS CURVES

Номер: US20190006073A1
Автор: AYDT Gerald, Beier Marco, RUECKLE Markus, STEINBERG Klemens, TUERKER Oezguer
Принадлежит:

The invention relates to a method for producing a valve () that can be electromagnetically actuated which method comprises an electromagnet (), an armature () that can be moved by the electromagnet (), and a valve body (), having means () for converting a movement of the armature () into an opening or closing of the valve (), wherein the electromagnet () and the armature () are inserted into the valve body (), wherein, before the electromagnet () is inserted into the valve body (), a magnetic hysteresis curve () of a combination () of the electromagnet () having a test armature () lying against said electromagnet () is recorded, the slope mof a first, substantially linear curve segment () of the hysteresis curve () is determined in the unsaturated state, and, from the slope m, the slope m* of a curve segment () of a hysteresis curve () of the finally assembled valve () having the armature () lying continuously against the electromagnet () is determined, said curve segment corresponding to the first curve segment (). The invention further relates to a method for determining the armature stroke AH, wherein the magnetic energy ΔE in the air gap () formed between the armature () and the electromagnet () is evaluated from the difference between the first slope mand the second slope m*. 11222322254444312223510622232222225111031113013222abababcababaababab. A method for ascertaining a hysteresis curve of an electromagnetically actuatable valve () made of an electromagnet ( , , ) , an armature () that is movable by way of the electromagnet ( , , ) , and a valve body () with means ( , , , ) for converting a movement of the armature () into opening or closing of the valve () , wherein the electromagnet ( , , ) and the armature () are inserted into the valve body () , the method comprising recording a magnetic hysteresis curve () of a combination () of the electromagnet ( , , ) with a test armature () contacting said electromagnet ( , , ) prior to inserting the electromagnet ( ...

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Номер записи: 32
14-01-2016 дата публикации

FUEL-CETANE-NUMBER ESTIMATION METHOD AND APPARATUS

Номер: US20160010580A1
Автор: Yamamoto Takayuki
Принадлежит:

An object is to provide a method and an apparatus which can be implemented with a simplified and inexpensive configuration without causing a misfire in a combustion state. In a fuel-Cetane-number estimation method of the present invention, a map which specifies a relationship between the Cetane number and a control parameter at which NOx concentration of exhaust gas reaches a predetermined value is prepared in advance. Then, the control parameter is controlled variably to detect transition of the NOx concentration of the exhaust gas of the internal combustion engine, and thereby the control parameter of the internal combustion engine at which the NOx concentration has reached the predetermined value is obtained, and the Cetane number which corresponds to the obtained control parameter is estimated on the basis of the map. 1. A fuel-Cetane-number estimation method of estimating a Cetane number of a fuel used in an internal combustion engine which performs compression ignition combustion , comprising:preparing in advance a map which specifies a relationship between the Cetane number of the fuel and a control parameter of the internal combustion engine at which NOx concentration of exhaust gas of the internal combustion engine reaches a predetermined concentration value;controlling the control parameter of the internal combustion engine variably to detect transition of the NOx concentration of the exhaust gas of the internal combustion engine;obtaining the control parameter of the internal combustion engine at which the NOx concentration has reached the predetermined concentration value on the basis of the detected NOx concentration; andestimating the Cetane number which corresponds to the obtained control parameter on the basis of the map.2. The fuel-Cetane-number estimation method according to claim 1 , further comprising:detecting a state factor which affects the NOx concentration of the exhaust gas of the internal combustion engine; andcorrecting the map by using a ...

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Номер записи: 33
14-01-2016 дата публикации

Processing system and method for calculating pressure decreases due to injection events in a high-pressure fuel system

Номер: US20160010584A1
Автор: David Lee BALDWIN, David M. Carey, Donald J. Benson, Paul V. MOONJELLY
Принадлежит: Cummins Inc

A system and method is provided to analyze an intermediate pressure signal portion between an end of an injection event signal portion and a start of a subsequent injection event signal portion. The analysis is simplified by identifying a plurality of single cycle windows and calculating a single value, such as a mean or a median, for each of the windows. An intermediate portion single value is determined by averaging the single values for each of the windows. The intermediate portion single value may then be used to identify pumping events or leakage errors that occur during the intermediate pressure signal portion that affect further analysis of the intermediate pressure signal portion.

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Номер записи: 34
11-01-2018 дата публикации

CHARACTERISTIC DETERMINING APPARATUS AND CONTROL DEVICE USING SAME

Номер: US20180010565A1
Автор: Furukawa Takashi
Принадлежит: Denso Corporation

A characteristic determining device is provided which determines fuel injection characteristics of a plurality of fuel injectors for an internal combustion engine. The characteristic determining device includes a pressure sensor and a plurality of pipes each of which connects between the pressure sensor and one of the fuel injectors. The pressure sensor is designed to have a plurality of pressure inputs from the respective fuel injectors through the pipes and outputs a signal indicative of a level of pressure in each of the fuel injectors. The characteristic determining device analyzes the signals from the first pressure sensor to determine the fuel injection characteristics of the respective fuel injectors. These arrangements result in a simplified structure of the characteristic determining device and a decreased manufacturing cost thereof. 1. A characteristic determining device which determines fuel injection characteristics of a plurality of fuel injectors working to spray fuel in a delivery pipe into an internal combustion engine , comprising:a plurality of pipes each of which has a length with a first end and a second end and communicates at the first end with an inside of one of the fuel injectors;a first pressure sensor to which the second ends of at least two of the pipes are joined and which is responsive to a pressure in each of the at least two of the pipes to output a signal as a function of an internal injector pressure that is a pressure of fuel in a corresponding one of the fuel injectors; anda characteristic determiner which analyzes the signal, as outputted from the first pressure sensor, to determine fuel injection characteristics of a corresponding one of the fuel injectors.2. A characteristic determining device as set forth in claim 1 , further comprising a fuel path disposed between the delivery pipe to the fuel injectors claim 1 , the fuel path including first sections leading to spray holes of the respective fuel injectors and a second ...

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Номер записи: 35
21-01-2016 дата публикации

Fuel Injector Calibration And Trimming

Номер: US20160017832A1
Автор: Lennox Timothy N., Touchette Alain M.J.
Принадлежит:

A method for correcting injection behavior of a fuel injector includes calculating a nominal value of a fuel injector family characteristic for an average fuel injector from a family of fuel injectors as a multi-variable function of engine operating conditions, calculating a corrected value of the fuel injector family characteristic as a function of the nominal value, and employing the corrected value when actuating the fuel injector to inject fuel. 1. A method for correcting injection behavior of a fuel injector comprising: (i) operating a set of fuel injectors from said family at a first predetermined number of engine operating conditions; and', '(ii) determining a multi-variable function of engine operating conditions based on measurements of performance of said set of fuel injectors, said multi-variable function of said engine operating conditions determining a nominal value of a fuel injector family characteristic;, '(a) conducting a fuel injector family calibration phase for a family of fuel injectors, said family calibration phase comprising (i) operating a fuel injector at a second predetermined number of engine operating conditions; and', '(ii) determining a function of said nominal value based on measurements of performance of said fuel injector, said function of said nominal value determining a corrected value of said fuel injector family characteristic for said fuel injector;, '(b) conducting a fuel injector calibration phase during manufacturing, said fuel injector calibration phase comprising (i) operating said fuel injector at respective engine operating conditions;', '(ii) calculating said nominal value of said fuel injector family characteristic from said multi-variable function of said engine operating conditions;', '(iii) calculating said corrected value of said fuel injector family characteristic from said function of said nominal value; and', '(iv) employing said corrected value when actuating said fuel injector to inject fuel., '(c) conducting ...

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Номер записи: 36
17-04-2014 дата публикации

METHOD FOR DETERMINING THE AMOUNT OF FUEL LEAVING AN INJECTOR

Номер: US20140102186A1
Автор: LEBLON Michael
Принадлежит:

A method for determining the quantity of fuel leaving an injector of a direct-injection diesel engine, the quantity of fuel supplying a cylinder of the engine in which a piston moves, the injection of fuel being performed by a pilot injection during which a first quantity of fuel is injected into the cylinder followed by a main injection during which a second quantity of fuel, greater than the first quantity of fuel, is injected into the cylinder, the method including the following steps: a) operating the engine at idle speed, b) determining the maximum pressure in the cylinder, and c) determining, from the maximum pressure, the quantity of fuel injected into the cylinder during the pilot injection, by way of a predefined one-to-one relationship, at idle speed, between a maximum pressure value in the cylinder and a quantity of fuel injected into the cylinder during the pilot injection. 1. A method for determining the quantity of fuel leaving an injector of a direct-injection diesel engine , said quantity of fuel supplying a cylinder of said engine in which a piston moves , the injection of fuel being performed by a pilot injection during which a first quantity of fuel is injected into the cylinder followed by a main injection during which a second quantity of fuel , greater than the first quantity of fuel , is injected into the cylinder , said method being characterized in that it comprises the following steps:a) operating the engine at idle speed,b) determining the maximum pressure in the cylinder, andc) determining, from said maximum pressure, the quantity of fuel injected into the cylinder during the pilot injection, by means of a predefined one-to-one relationship, at idle speed, between a maximum pressure value in the cylinder and a quantity of fuel injected into the cylinder during the pilot injection.2. The method as claimed in claim 1 , characterized in that it consists in determining the quantity of fuel injected into the cylinder during the main injection ...

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Номер записи: 37
21-01-2021 дата публикации

FUEL SYSTEM TEST APPARATUS AND METHOD

Номер: US20210017925A1
Автор: Baldwin David, Wright David
Принадлежит:

A method that includes coupling an external, removable fuel pressurization system to a fuel system of a vehicle while the vehicle remains in a confined space. The fuel system of the vehicle is pressurized with the fuel pressurization system while the vehicle remains in the confined space and without activating an engine of the vehicle. Decay of pressure of the fuel system is monitored following pressurization of the fuel system, and one or more of a leak, or a replaceable component, of the fuel system of the vehicle is detected based on at least in part on the decay of pressure that are monitored. 1. A method comprising:coupling an external, removable fuel pressurization system to a fuel system of a vehicle while the vehicle remains in a confined space;pressurizing the fuel system of the vehicle with the fuel pressurization system while the vehicle remains in the confined space and without activating an engine of the vehicle;monitoring a decay of pressure of the fuel system following pressurization of the fuel system; anddetecting one or more of a leak or a replaceable component of the fuel system of the vehicle based at least in part on the decay of pressure that are monitored.2. The method of claim 1 , further comprising repairing or replacing one or more components of the fuel system of the vehicle responsive to detecting the one or more of the leak or the replaceable component of the fuel system before the vehicle leaves the confined space and travels along one or more routes to another location.3. The method of claim 1 , wherein coupling the fuel pressurization system to the fuel system of the vehicle includes moving the fuel pressurization system to the vehicle in the confined space.4. The method of claim 1 , wherein the fuel system of the vehicle is pressurized by fluidly coupling a pump of the fuel pressurization system to the fuel system claim 1 , wherein the pump of the fuel pressurization system is driven by an engine of the fuel pressurization system.5. ...

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Номер записи: 38
21-01-2021 дата публикации

METHOD AND SYSTEM FOR FUEL INJECTOR BALANCING

Номер: US20210017930A1
Автор: Hollar Paul, Oshinsky David, Pursifull Ross Dykstra, Thomas Joseph, Uhrich Michael
Принадлежит:

Methods and systems are provided for reducing errors in estimated fuel rail pressure incurred at the time of a scheduled injection event due to engine-driven cyclic fuel rail pressure changes. In one example, a pulse-width commanded during a scheduled injection event is determined as a function fuel rail pressure samples collected over a moving window that is customized for the corresponding fuel injector. In another example, the commanded pulse-width is determined as a function of an average fuel rail pressure sampled during a quiet zone of injector operation and predicted fuel rail pressure altering events occurring between the quiet zone and the scheduled injection event. 1. An engine method , comprising:estimating an average fuel rail pressure at a scheduled injection event based on an initial fuel rail pressure, sampled and averaged over a quiet period of a fuel injector, and a predicted change to the initial fuel rail pressure from pressure altering engine events occurring between the quiet period and the scheduled injection event; andadjusting a pulse-width commanded at the scheduled injection event based on the estimated average fuel rail pressure.2. The method of claim 1 , wherein the fuel injector is a first injector claim 1 , and wherein the scheduled injection event is scheduled at a second fuel injector of the engine.3. The method of claim 2 , wherein the pressure altering engine events include one or more of an injection event from an engine fuel injector other than the first injector claim 2 , and cam lobe strokes of a high pressure fuel pump fueling all fuel injectors of the engine.4. The method of claim 3 , wherein the estimating includes one or more of estimating a decrease in fuel rail pressure due to the injection event from the engine fuel injector other than the first injector and estimating an increase in fuel rail pressure due to the cam lobe strokes.5. The method of claim 3 , wherein the estimating is responsive to the high pressure fuel ...

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Номер записи: 39
16-01-2020 дата публикации

Fuel Supply System And Fuel Distributor Block

Номер: US20200018277A1
Автор: Christian Monzert, Umit BOZKURT
Принадлежит: MAN Energy Solutions SE

A fuel supply system, having a low-pressure region, a high-pressure region, a pumping device, a low-pressure pump, and a high-pressure pump A pressure accumulator system is provided between the pumping device and injectors and has distributor units. Between the low-pressure pump and the high-pressure pump, a fuel distributor block is provided, which has a fuel leakage collection line for fuel leakage supplied to the fuel distributor block that has a choke and a bypass around the choke and a leakage sensor in the bypass. The choke is dimensioned such that all fuel leakage flows through the choke if the fuel leakage conducted via the fuel leakage collection line is less than a limit value, and fuel leakage flows through the bypass and across the leakage sensor if the fuel leakage conducted via the fuel leakage collection line is greater than the limit value.

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Номер записи: 40
28-01-2016 дата публикации

Method of determining the injection pattern in the compression stroke of the combustion cycle of the cylinders of a direct-injection internal combustion engine

Номер: US20160025058A1
Автор: Alessandro Musi, Fabio Panini, Fabio Sensi, Filippo Cavanna, Marco Morelli, Riccardo Lanzoni
Принадлежит: Magneti Marelli SpA

A method to determine the injection pattern in the compression stroke of the combustion cycle of the cylinders of a direct-injection internal combustion engine, comprising the steps of determining the initial quantity of fuel and an objective quantity of fuel to be injected for each partial injection of a maximum number of partial injections; determining an effective quantity of fuel to be injected for each partial injection as a function of the respective initial quantity of fuel and of the respective objective quantity of fuel; and determining an objective pattern of partial injections to be performed in the compression stroke as a function of the value of the end of injection angle and of the effective quantity of fuel to be injected for each partial injection of a maximum number of partial injections to be performed in the compression stroke.

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Номер записи: 41
04-02-2016 дата публикации

ION TOLERANT CORROSION INHIBITORS AND INHIBITOR COMBINATIONS FOR FUELS

Номер: US20160032208A1
Автор: Arters David C., Bartley Stuart L., Chang Zen-Yu, Frank Anthony R., Jackson Mitchell M.
Принадлежит:

This invention relates to compositions and methods for inhibiting corrosion and deposit formation in fuel handling equipment, with reduced or eliminated incidence of fuel filter plugging and internal diesel injector deposits (IDID) in the equipment that eventually employs the final commercially blended form of the fuel. More specifically, the invention relates to inhibiting corrosion from the walls of fuel pipelines and storage equipment and preventing deposits in engines. 1. A composition comprising a mixture of:(a) at least one substituted hydrocarbon additive comprising a short chain hydrocarbon substituted with at least two carboxy functionalities in the form of acids or at least one carboxy functionality in the form of an anhydride, and(b) at least one substituted hydrocarbon additive comprising a long chain hydrocarbon substituted with at least two carboxy functionalities in the form of acids.2. The composition of claim 1 , wherein the at least one substituted hydrocarbon additive of (a) is a condensation product with an alcohol or an epoxide.3. The composition of wherein the at least one short chain hydrocarbyl of (a) comprises from about 6 to about 30 carbon atoms.4. The composition of wherein the carboxy functionality(ies) of (a) comprise(s) 4 to 10 carbon atoms.5. The composition of wherein the alcohol of (a) is at least one of a mono-alcohol claim 1 , diol claim 1 , polyol or alkanolamine.6. The composition of wherein the alcohol of (a) comprises propane diol claim 5 , butane diol.7. The composition of wherein the epoxide of (a) comprises ethylene oxide claim 2 , propylene oxide claim 2 , or butylene oxide.8. The composition of wherein the long chain hydrocarbon of (b) comprises a polyolefin of from about 280 to about 5000 Mw.9. The composition of wherein the carboxy functionalities of (b) comprises 4 to 10 carbon atoms.10. The composition of wherein the composition further comprises (c) a fatty acid and/or dimerized claim 1 , trimerized and/or ...

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Номер записи: 42
05-02-2015 дата публикации

METHOD AND DEVICE FOR ZERO-FUEL QUANTITY CALIBRATION OF A FUEL INJECTOR

Номер: US20150034048A1
Автор: Bollinger Stefan, Palmer Joachim, Rupp Andreas, Walter Michael
Принадлежит:

In a method for calibrating a fuel metering system including an injector of an internal combustion engine performing a pilot injection chronologically prior to a main injection, at least two test injections chronologically prior to the pilot injection are provided for the injector, the first test injection being carried out using a first activation duration, in which the injector does not yet open, at least one second test injection being carried out in a subsequent injection cycle using an activation duration which is progressively increased in each case in relation to the first test injection until a change of an operating variable of the fuel metering system or the internal combustion engine results, which activation duration corresponds to a minimum activation duration of the injector. 111-. (canceled)12. A method for calibrating a fuel metering system including an injector of an internal combustion engine , the fuel metering system providing at least one pilot injection chronologically prior to a main injection , the method comprising: a first test injection is carried out using a first activation duration in which the injector does not yet open, and', 'at least one second test injection is carried out in at least one subsequent injection cycle each having a progressively increasing activation duration relative to the first test injection until a change of an operating variable of one of the fuel metering system or the internal combustion engine results; and, 'applying, using the injector, at least two test injections which occur chronologically prior to the at least one pilot injection, whereinascertaining a minimum activation duration of the injector based on the activation duration during which the change of the operating variable of one of the fuel metering system or the internal combustion engine results.13. The method for calibrating a fuel metering system including an injector of an internal combustion engine , comprising:performing a zero-fuel quantity ...

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Номер записи: 43
05-02-2015 дата публикации

MAINTENANCE SYSTEM FOR AN INJECTOR

Номер: US20150034125A1
Автор: Belsoeur Stephane, Faber Guillaume
Принадлежит:

The invention relates to a maintenance system for an injector controlled by a solenoid actuator. The system comprises an electronic control unit arranged in a housing from which an electrical cable extends terminated by a special adapter capable of being connected onto the injector so that the injector is electrically connected with the electronic control unit while it remains in place on the internal combustion engine. The electronic control unit is designed for executing a plurality of operations according to a cycle of measurements including checking the electrical insulation, measuring the electrical resistance and measuring the electrical inductance of the solenoid and a solenoid activation test. The system is further provided with actuating means for starting the cycle and an information means for indicating data relating to the cycle in progress. 1. A maintenance system for a fuel injector controlled by a solenoid actuator provided to be fitted to an internal combustion engine , the system comprising an electronic control unit arranged in a housing from which an electrical cable extends terminated by a specific adapter capable of being connected to the injector so that the injector is electrically connected with the electronic control unit while it remains in place on the internal combustion engine ,characterised in that the electronic control unit is designed to execute a plurality of operations according to a cycle of measurements comprising checking of the electrical insulation, measurement of the electrical resistance and measurement of the electrical inductance of the solenoid as well as a solenoid activation test, the system being further provided with an actuating means making it possible to commence the cycle and an information means making it possible to know data relating to the cycle in progress.2. A system according to claim 1 , in which the control unit is provided to further execute a cleaning cycle comprising claim 1 , in addition to the ...

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Номер записи: 44
31-01-2019 дата публикации

DEPOSIT MITIGATION FOR GASEOUS FUEL INJECTORS

Номер: US20190032618A1
Автор: KARIMI SHARIF Hamed, OUELLETTE Patric, SOLERI Dominique J.
Принадлежит:

A method for deposit mitigation in a gaseous fuel injector that introduces a gaseous fuel through a gaseous fuel orifice directly into a combustion chamber of an internal combustion engine includes at least one of a) reducing the ago length of the gaseous fuel orifice by substantially between 10% to 50% of a previous length of a previous gaseous fuel orifice showing deposit accumulation above a predetermined threshold; b) providing the gaseous fuel orifice with an inwardly and substantially linearly tapering profile; c) determining deposit mitigation is needed; and performing at least one of the following deposit mitigation techniques i) increasing gaseous fuel injection pressure wherein deposit accumulation is reduced during fuel injection; and ii) decreasing gaseous fuel temperature wherein a rate of deposit accumulation is reduced; and d) injecting compressed air through the gaseous fuel orifice during shutdown of the internal combustion engine; whereby torque loss in the internal combustion engine due to deposit accumulation in the gaseous fuel orifice is reduced below a predetermined value. 1. A method for deposit mitigation in a gaseous fuel injector that introduces a gaseous fuel through a gaseous fuel orifice directly into a combustion chamber of an internal combustion engine comprising at least one of:a) reducing the length of the gaseous fuel orifice by substantially between 10% to 50% of a previous length of a previous gaseous fuel orifice showing deposit accumulation above a predetermined threshold;b) providing the gaseous fuel orifice with an inwardly and substantially linearly tapering profile;c) determining deposit mitigation is needed; i) increasing gaseous fuel injection pressure whereby deposit accumulation is reduced during fuel injection; and', 'ii) decreasing gaseous fuel temperature whereby a rate of deposit accumulation is reduced; and, 'd) performing at least one of the following deposit mitigation techniquese) injecting compressed air ...

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Номер записи: 45
08-02-2018 дата публикации

DETERMINING A LIFT OF A SOLENOID VALVE

Номер: US20180038332A1
Автор: Hauser Christian, Rösel Gerd, Stutika Markus
Принадлежит: Continental Automotive GmbH

A device and a method are provided for determining a stroke of an armature of a magnetic valve which has a coil and the armature is displaceable by magnetic force, including: providing at least one reference data set which includes a magnitude of a current through the coil and a magnitude of the magnetic flux in the case of a known magnitude of the stroke; generating a current flow through the coil of the magnetic valve in order to generate a magnetic field for generating a magnetic force on the armature, which magnetic force displaces the armature in the direction for the opening of a closure element coupled to the armature; determining a magnitude of the magnetic flux when the armature abuts against a driver of the closure element; and determining the magnitude of the stroke based upon the determined magnitude of the magnetic flux and the reference data set. 1. A method for determining a stroke of an armature of a magnetic valve which has a coil and the armature which is displaceable by magnetic force , the method comprising:providing at least one reference data set which comprises a magnitude of a current through the coil and a magnitude of magnetic flux of the coil in the case of a known magnitude of the stroke;generating a current flow through the coil of the magnetic valve in order to generate a magnetic field for generating a magnetic force on the armature, which magnetic force displaces the armature in the direction for the opening of a closure element;determining a magnitude of the magnetic flux when the armature abuts against a driver of the closure element; anddetermining the magnitude of the stroke on the basis of the determined magnitude of the magnetic flux and the reference data set.2. The method as claimed in claim 1 , wherein the reference data set is representative of a curve in a coordinate system in which the current through the coil is plotted on one axis and the magnetic flux is plotted on another axis.3. The method as claimed in claim 1 , ...

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Номер записи: 46
03-03-2022 дата публикации

Fuel injector testing machine

Номер: US20220065209A1
Автор: Paul Arseneau
Принадлежит: Individual

A fuel injector testing machine is provided. The machine includes a head unit having a flow meter, and a fuel injector holding assembly. The head unit and/or the fuel injector holding assembly can be moved relative to each other, allowing the head unit to test a subset of fuel injectors held on the fuel injector holding assembly, and subsequently can test another subset of the fuel injectors via movement of the head unit and/or fuel injector holding assembly.

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Номер записи: 47
26-02-2015 дата публикации

SYSTEM AND METHOD FOR ADJUSTING ON-TIME CALIBRATION OF A FUEL INJECTOR IN INTERNAL COMBUSTION ENGINE

Номер: US20150053184A1
Автор: Cunningham Michael J., Ruth Michael J.
Принадлежит:

The disclosure provides a system and method for determining an amount of fuel injected or delivered by a single fuel injector in an internal combustion engine by generating one fuel injection event after the engine has stopped operating. The fuel delivered is statistically analyzed in comparison with a commanded fuel delivery amounts to determine the suitability of fuel injector on-time calibration for the analyzed fuel injector. If the fuel delivered deviates from the commanded amount of fuel delivery by a predetermined value, the fuel injector on-time calibration for the analyzed fuel injector is changed. 1. A method of calibrating fuel injectors , comprising:receiving an engine shutdown value;providing a fuel injection value to initiate a fuel injection event for a fuel injector corresponding to a cylinder in response to the engine shutdown value;receiving a pressure value representing a fuel pressure over a period of time, which includes the fuel injection event;calculating an amount of fuel actually injected in response to the pressure value;producing a deviation value in response to the amount of fuel and a commanded amount of fuel; anddetermining a correction factor for the injector in response to the deviation value.2. The method of claim 1 , further including operating the fuel injector in response to the correction factor.3. The method of claim 2 , wherein determining the correction factor is in response to a statistical analysis of fuel injection events.4. The method of claim 1 , further including receiving sensor information and determining in response to the sensor information which fuel injector to provide the fuel injection value.5. The method of claim 4 , further wherein the sensor information includes at least one of a fuel pressure claim 4 , an engine temperature claim 4 , an altitude claim 4 , and a crank angle.6. The method of claim 1 , further including producing the deviation value in response to a trend analysis including the amount of fuel ...

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Номер записи: 48
14-02-2019 дата публикации

SYSTEMS FOR FUEL DELIVERY

Номер: US20190048820A1
Автор: Mischler James Robert, Trask Leslie Orin, Willis Jeffrey David, Yerace Daniel
Принадлежит: GENERAL ELECTRIC COMPANY

Various systems are provided for delivering fuel to an engine. In one example, a system includes a controller and a fluid system configured to maintain a fluid at a pressure downstream of a check valve. The controller may be configured to determine if a leak is present in the fluid system based on a first pressure decay rate of the fluid system, and responsive to identifying that a leak is present in the fluid system, differentiate between an internal leak and an external leak based on a leak flow rate as fluid system pressure decreases. 1. A system , comprising:a gaseous fuel supply system to supply gaseous fuel from a gaseous fuel storage source to an engine having a plurality of cylinders; and detect a request to shut down the engine; and', 'in response to detecting the request, remove gaseous fuel trapped within the gaseous fuel supply system by closing a gaseous fuel supply valve and selectively fueling gaseous fuel to the engine., 'a controller configured to2. The system of claim 1 , wherein the gaseous fuel supply system comprises a gaseous fuel rail including a plurality of gas admission valves claim 1 , each gas admission valve to supply gaseous fuel to a respective cylinder of the plurality of cylinders claim 1 , wherein the gaseous fuel supply valve is located upstream of the gaseous fuel rail claim 1 , and wherein the gaseous fuel trapped within the gaseous fuel supply system is trapped between the gaseous fuel supply valve and plurality of gas admission valves.3. The system of claim 1 , wherein the engine is configured to combust liquid fuel and gaseous fuel claim 1 , wherein to selectively fuel gaseous fuel to the engine claim 1 , the controller is configured to supply both gaseous fuel and liquid fuel to each cylinder of a subset of cylinders of the plurality of cylinders claim 1 , thereby to combust the gaseous fuel trapped within the gaseous fuel supply system claim 1 , the subset including at least one cylinder but less than all cylinders of the ...

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Номер записи: 49
14-02-2019 дата публикации

General aviation carburetor testing and analysis device

Номер: US20190048828A1
Автор: Ballenger Dale, Szwarnowicz Chad, Weaver Ronald J.
Принадлежит:

A testing device for general aviation carburetors and fuel servos. The testing device is capable of replicating carburetor operating characteristics and using sensors to monitor and record the operating characteristics of both horizontal and vertical type carburetors, and compare the data received with predefined values. The testing device measures both test fluid and air flow through a carburetor. A moveable camera is placed within the throttle body of the carburetor being tested providing visual inspection of the fluid atomization with snap shot capability. The testing device also includes flow sensors to record the performance of the carburetor, providing automated data collection with memory storage. The device is fully portable with lockable caster wheels. 1: A portable analyzing device for carburetors and fuel servos used in general aviation comprising:a housing supported by wheels;an intake plenum secured to said housing, said intake plenum constructed and arranged to receive a carburetor to be analyzed; a vacuum pump mounted in said housing, said vacuum pump capable of drawing an airstream through said intake plenum;a junction member having a first end fluidly coupled to an outtake of said vacuum pump for receipt of the airstream, said junction member having a first piping element to direct a portion of the airstream to a vertical port extension and a second piping element directing a portion of the airstream to a horizontal port extension;a port plug, said port plug insertable into said horizontal port extension when said vertical port extension is coupled to the carburetor or said port plug insertable into said vertical port extension when said horizontal port extension is coupled to the test carburetor;a fluid pump coupled to a fluid tank and to said carburetor for transferring a test fluid from said fluid tank to a fluid inlet on said carburetor wherein the carburetor injects test fluid into the airstream;a test fluid flow sensor to monitor the amount of ...

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Номер записи: 50
21-02-2019 дата публикации

Fuel Injection Valve With A Weld Ring

Номер: US20190055909A1
Автор: Albano Alessia, Hamann Christoph, Soriani Matteo
Принадлежит: Continental Automotive GmbH

The present disclosure relates to internal combustion engines. Various embodiments thereof may include a fuel injection valve for a combustion engine comprising: a valve body with a cavity; a valve needle movable in the cavity; an actuator assembly to actuate the valve needle. The actuator assembly includes an electro-magnetic coil, a pole piece positioned inside the cavity, and an armature element. The armature element moves within the cavity to move the valve needle in a predetermined direction. A fixing ring abutting the pole piece, fixed to the valve body by means of joining to a circumferential surface of the cavity. 1. A fuel injection valve for a combustion engine , the fuel injection valve comprising:a valve body with a cavity hydraulically connecting a fluid inlet portion and a fluid outlet portion;a valve needle movable in the cavity to seal and unseal the fluid outlet portion;an actuator assembly to actuate the valve needle; an electro-magnetic coil,', 'a pole piece positioned inside the cavity, and', 'an armature element;, 'the actuator assembly includes'}the armature element moves within the cavity; to move the valve needle in a predetermined direction for unsealing the fluid outlet portion; anda fixing ring abutting the pole piece, the fixing ring fixed to the valve body by means of joining to a circumferential surface of the cavity.2. The fuel injection valve according to claim 1 , further comprising the pole piece joined to the valve body by press-fit.3. The fuel injection valve according to claim 1 , wherein the fixing ring and the armature element are positioned on opposite sides of the pole piece with respect to a longitudinal axis of the valve body so that the fixing ring is operable to block displacement of the pole piece in the predetermined direction.4. The fuel injection valve according to claim 1 , further comprising a retainer element which is fixed to the valve needle;wherein the armature element pushes the retainer element to move the ...

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Номер записи: 51
20-02-2020 дата публикации

CLEANING ENGINE INTAKE VALVES AND SURROUNDING INTAKE AREAS

Номер: US20200055101A1
Автор: Cheek John D., Erwin Michael Jason, Garcia Paul Frederick, Garcia Tomas, Probus Thomas Michael
Принадлежит:

Systems and methods provide for cleaning the air intake valves and surrounding areas of an engine. A gravity-fed cleaning-fluid dispenser may feed cleaning fluid into a hose through a metered device that meters a rate at which the cleaning fluid flows into the hose. A second fluid meter connected to a distal end of the hose further meters the rate at which a mixture of the cleaning fluid and air from is dispersed into the running GDI engine. Cleaning fluid may be distributed to the engine at a gradually decreasing rate as a volume of cleaning fluid in the dispenser decreases as the service progresses. 1. A system for distributing a cleaning solution to an engine port , the system comprising:a fluid dispenser containing a hollow body for receiving a cleaning fluid;a first fluid meter connected to the fluid dispenser, wherein the first fluid meter includes a first metered hole to meter a rate at which the cleaning fluid flows into a first end of a hose;a second fluid meter connected to a second end of the hose, wherein the second fluid meter includes a second metered hole; andthe second fluid meter adapted to mix air and the cleaning fluid and to dispense the mixture.2. The system of claim 1 , wherein the second metered hole is larger than the first metered hole.3. The system of claim 1 , wherein the second fluid meter is a nozzle.4. The system of claim 1 , wherein the second fluid meter is an aerosolizing nozzle.5. The system of claim 1 , where the second fluid meter is a venturi nozzle.6. The system of claim 1 , the system further comprising a ball valve connected to the first fluid meter claim 1 , the ball valve having an open setting and a close setting.7. The system of claim 6 , wherein the ball valve in open position allows the fluid to flow from the fluid dispenser to the hose at a flow rate based on the first meter assembly and the second meter assembly.8. The system of claim 1 , wherein a cleaning-fluid flow rate from the fluid dispenser to the hose is based ...

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Номер записи: 52
20-02-2020 дата публикации

A FUEL ATOMIZER AND A METHOD FOR ATOMIZING FUEL

Номер: US20200056568A1
Автор: Tang King Shing
Принадлежит:

A fuel atomizer () has a conduit () for passage of fuel () and an object () in the conduit () which creates continual and repetitive turbulence in the fuel (). The turbulent fuel exits the conduit () via a nozzle () into a spray of fine mist (). The object () is a movable magnet () which is repelled by another magnet () at the outlet () of the conduit (). The flow of fuel () carries the movable magnet () towards the outlet () of the conduit () while the other magnet () repels the movable magnet () backwards. So the movable magnet () moves repetitively. 1. A fuel atomizer comprisinga fuel flow path; andan object placed in the fuel flow path;the object arranged to move repeatedly in the fuel during passage of fuel.2. The fuel atomizer as claimed in claim 1 , whereinthe object is secured to the conduit by a resilient member.3. The fuel atomizer as claimed in claim 1 , whereinthe object is movable by the flow fuel in one direction and is biased to move counter-currently to the flow of fuel in another direction.4. The fuel atomizer as claimed in claim 3 , whereinthe object is a magnetic device;the fuel atomizer further comprisinga magnetic field having a polarity directed at the magnetic device to bias the magnetic device to move counter-currently to the flow of fuel.5. The fuel atomizer as claimed in claim 4 , whereinthe magnetic device is a cylinder having a through-hole for passage of fuel through the magnetic device.6. The fuel atomizer as claimed in and claim 4 , whereinthe magnetic field is provided by a second magnetic device fixed to the flow path.7. The fuel atomizer as claimed in claim 5 , whereinthe second magnetic device is in the flow path.8. The fuel atomizer as claimed in claim 5 , whereinthe second magnetic device is adjacent the flow path.9. The fuel atomizer as claimed in further comprising flow guides for spinning flowing fuel.10. The fuel atomizer as claimed in further comprising fins for absorbing and directing heat into the fuel flow path.11. A ...

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Номер записи: 53
08-03-2018 дата публикации

CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

Номер: US20180066621A1
Автор: Hattori Jun, NAGAKURA Keisuke
Принадлежит:

When imbalance diagnosis is not executed, target fuel pressure is set based on a rotation speed and volumetric efficiency of an engine, and when the imbalance diagnosis is executed, fuel pressure smaller than the target fuel pressure settable when the imbalance diagnosis is not executed is set as the target fuel pressure, and a high-pressure fuel pump that supplies fuel to a delivery pipe connected to the in-cylinder injection valve, is driven and controlled such that detected fuel pressure becomes the target fuel pressure. With this, it is possible to execute the imbalance diagnosis with higher accuracy. 1. A control device for an internal combustion engine , the internal combustion engine being a multi-cylinder internal combustion engine including an in-cylinder injection valve configured to inject fuel into a cylinder of the internal combustion engine , the control device comprising:a fuel supply device including a high-pressure fuel pump configured to pressurize fuel from a fuel tank and to supply the fuel to a supply flow passage connected to the in-cylinder injection valve; and (i) control the high-pressure fuel pump such that fuel pressure in the supply flow passage becomes target fuel pressure,', '(ii) execute imbalance diagnosis for determining whether or not imbalance of a fuel injection amount between cylinders occurs based on fluctuation of an air-fuel ratio or fluctuation of rotation of the internal combustion engine, and', '(iii) set a value of the fuel pressure to the target fuel pressure, the value of the fuel pressure being a value of the fuel pressure when the imbalance diagnosis is executed and being smaller than a value of the fuel pressure when the imbalance diagnosis is not executed., 'an electronic control unit configured to2. The control device according to claim 1 , whereinthe electronic control unit is configured to calculate the target fuel pressure based on volumetric efficiency and a rotation speed of the internal combustion engine, the ...

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Номер записи: 54
19-03-2015 дата публикации

Method for monitoring a fuel temperature sensor

Номер: US20150078413A1
Автор: Heinrich Andreas
Принадлежит: ROBERT BOSCH GMBH

A method for monitoring a fuel temperature sensor over a repeating cycle includes: estimating a first value of a fuel temperature at the beginning of the cycle with the aid of a value of at least one further temperature from the same cycle and at least one of a second value of the fuel temperature and a further temperature from at least one previous cycle; and checking whether the deviation of a temperature of the fuel temperature sensor lies within a first range around the first value of the fuel temperature. 1. A method for monitoring a fuel temperature sensor over a repeating cycle , comprising:estimating a first value of a fuel temperature at the beginning of the cycle with the aid of a value of at least one further temperature from the same cycle and at least one of a second value of the fuel temperature and a further temperature from at least one previous cycle; andchecking whether a deviation of a temperature of the fuel temperature sensor lies within a first range around the first value of the fuel temperature.2. The method as recited in claim 1 , wherein a method for ascertaining a fuel temperature without a fuel temperature sensor is used to calculate a further change in the fuel temperature within the cycle.3. The method as recited in claim 2 , wherein the checking is performed periodically in order to check the fuel temperature sensor within at least one part of the cycle regarding whether the deviation of the temperature of the fuel temperature sensor from the ascertained fuel temperature lies within a second range.4. The method as recited in claim 3 , wherein the first range and the second range are different.5. The method as recited in claim 4 , wherein the second range is reduced one of (i) within one cycle or (ii) between two cycles.6. The method as recited in claim 5 , wherein the method for ascertaining a fuel temperature without a fuel temperature sensor is used to calculate a fuel temperature from at least one temperature and at least one other ...

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Номер записи: 55
15-03-2018 дата публикации

Control system for internal combustion engine

Номер: US20180073460A1
Автор: Hidekazu Hironobu, Kenji Hirose, Naoki Yokoyama, Seiichi Hosogai, Susumu Nakajima, Tatsuo Yamanaka
Принадлежит: Honda Motor Co Ltd

A control system for an internal combustion engine, which is capable of controlling fuel injection valves while causing valve-closing delay time periods, which occur with the valves actually mounted on the engine, to be reflected thereon, thereby making it possible to improve exhaust emission characteristics and fuel economy performance. The ECU of the control system performs initial value-specific control in fuel injection control and ignition timing control, such that initial value acquisition conditions are satisfied, so as to calculate the initial values of the valve-closing delay time periods when the initial value acquisition conditions are satisfied. When normal-time control is performed, the valve-opening time periods of the valves are calculated using the initial values of the valve-opening time periods, and the valves are controlled to be open over the valve-opening time periods.

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Номер записи: 56
16-03-2017 дата публикации

Method for determining the closing characteristic of the control valve of a piezo servo injector

Номер: US20170074197A1
Автор: Janos Radeczky
Принадлежит: Continental Automotive GmbH

A method for determining a closing characteristic of a valve of a piezo servo injector, including carrying out test charging of an actuator of the piezo servo injector in order to open the control valve and in order to reduce pressure in a control chamber of the piezo servo injector; incompletely discharging the actuator down to a residual partial stroke of the actuator; ascertaining a gradient profile of the pressure drop in the pressure accumulator during the residual partial stroke; and determining the closing characteristic of the control valve from the gradient profile of the pressure drop. The closing characteristic may be the closing time of the valve. The method further includes modifying or adapting a closing process for the valve based upon the determined closing time.

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Номер записи: 57
12-06-2014 дата публикации

Fuel supply apparatus for internal combustion engine

Номер: US20140163843A1
Автор: Susumu Kojima
Принадлежит: Toyota Motor Corp

A drive circuit ( 52 ) that is commonly provided with respect to two fuel injection valves ( 24 R and 24 L) for the same cylinder, and drive the two fuel injection valves ( 24 R and 24 L) for the same cylinder on the basis of a command from an ECU ( 40 ), is provided. An electric conduction line ( 52 ) that electric current supplied to the two fuel injection valves ( 24 R and 24 L) flows through, is provided. The electric conduction line ( 52 ) includes a common section ( 56 a ) one end of which is connected to the drive circuit ( 52 ), and branch sections ( 56 b ) which are sections following the other end of the common section ( 56 a ) that the electric conduction line ( 56 ) branches off at and on which the two fuel injection valves ( 24 R and 24 L) for the same cylinder are respectively installed. The electric current value I flowing through the common section ( 56 a ) is detected. An electric resistance ( 58 ) that is inserted in the branch section ( 56 b ) for the fuel injection valve ( 24 L), is provided. A fuel injection valve, at which an occurrence of abnormality concerning electric conduction is recognized, out of the two fuel injection valves ( 24 R and 24 L) for the same cylinder, is detected on the basis of the magnitude of the electric current value I.

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Номер записи: 58
30-03-2017 дата публикации

EVAPORATIVE EMISSIONS TESTING USING INDUCTIVE HEATING

Номер: US20170089304A1
Автор: Dudar Aed M.
Принадлежит:

Methods and systems are provided for conducting an evaporative emissions test on a fuel tank and an evaporative emissions system in a vehicle. In one example, pressure for the evaporative emissions test is provided by inductive heating of the fuel tank while the vehicle undergoes an inductive battery charging operation. In this way, evaporative emissions testing may be enabled under conditions wherein sufficient heat rejection from the engine to the fuel tank is not available, and further enables evaporative emissions testing without the use of an external pump thus eliminating additional costs, and reducing the space occupied in the vehicle for evaporative emissions testing diagnostics. 1. A method comprising:charging a battery of a hybrid electric vehicle by coupling a magnetic field between a primary coil external to the vehicle and a secondary coil onboard the vehicle;coupling the magnetic field between the primary coil and a ferrous fuel tank or ferrous member coupled to the tank; andcomparing pressure in the fuel system and an emission system coupled to the tank to a reference pressure during a portion of the charging.2. The method recited in claim 1 , further comprising sealing both the fuel system and the emission system together and indicating undesired vapor emissions in either the fuel system or the emission system when the pressure remains below the reference pressure for a predetermined time.3. The method recited in claim 1 , further comprising sealing the fuel system from the emission system and indicating undesired vapor emissions in the fuel system when a pressure in the fuel system remains below a preselected reference pressure for a preselected time.4. The method recited in claim 2 , further comprising: sealing the fuel system from the emission system and indicating undesired vapor emissions in the fuel system when a pressure in the fuel system remains below a preselected reference pressure for a preselected time; and indicating undesired vapor ...

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Номер записи: 59
09-04-2015 дата публикации

INJECTOR CAVITATION DETECTION TEST

Номер: US20150096361A1
Автор: Paul Curtis Paul Curtis, Raymond Mueller Raymond Mueller
Принадлежит: International Engine Intellectual Property Company, LLC

A method and apparatus for determining a characteristic of an injector are set forth. In one example, a compressed gas is applied to the inlet chamber of the injector while the spoolvalve is closed until the pressure of the compressed gas in the inlet chamber reaches a predetermined pressure. A change in pressure of the compressed gas in the inlet chamber is measured over time while the spool valve is closed. The pressure change measurement corresponds to the characteristic of the injector that is to be determined. 1. A method for determining a characteristic of an injector , wherein the injector includes an inlet chamber configured to receive a high-pressure hydraulic fluid that is directed from the inlet chamber to an intensifier chamber through a spool valve for actuating a piston , and an outlet passage configured to receive the hydraulic fluid from the intensifier chamber through the spool valve , the method comprising:applying a compressed gas to the inlet chamber while the spool valve is closed until pressure of the compressed gas in the inlet chamber reaches a predetermined pressure; andmeasuring, over time, a change in pressure of the compressed gas in the inlet chamber, wherein the measurement takes place with the spool valve closed, and wherein the pressure change measurement corresponds to the characteristic of the injector that is to be determined.2. The method of claim 1 , wherein the characteristic of the injector that is to be determined comprises leakage of hydraulic fluid between the inlet chamber and outlet passage through the spool valve.3. The method of claim 1 , wherein the spool valve is opened once the pressure in the inlet chamber has decreased to a predetermined final pressure level.4. The method of claim 1 , wherein the characteristic of the injector is at least partially determined by a rate of change in the pressure in the inlet chamber.5. The method of claim 1 , wherein the pressure change measurement is used to determine whether the ...

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Номер записи: 60
12-05-2022 дата публикации

METHOD FOR ASCERTAINING A VARIABLE CHARACTERIZING A FLOW RATE OF A FUEL INJECTOR

Номер: US20220145840A1
Автор: Bollinger Stefan, Bucher Kilian, Heitz Daniel, Iran Gabriel, Kutter Michael, Nonnenmacher Stefan, Thum Patrick
Принадлежит:

A method for ascertaining a variable characterizing a flow rate of a fuel injector during an operation of an internal combustion engine, to which the fuel injector is assigned. At least two input values for a data-based model are ascertained, and at least one output value is determined with the aid of the data-based model, on the basis of which a value for the variable characterizing the flow rate of the fuel injector is ascertained. The data-based model combines at least two methods differing from one another for ascertaining a variable characterizing a flow rate of a fuel injector. 115-. (canceled)16. A method for ascertaining a variable characterizing a flow rate of a fuel injector during an operation of an internal combustion engine to which the fuel injector is assigned , the method comprising the following steps:ascertaining at least two input values for a data-based model;determining at least one output value with the aid of the data-based model; andascertaining, based on the at least one output value, a value for the variable characterizing the flow rate of the fuel injector;wherein the data-based model combines at least two methods differing from one another for ascertaining the variable characterizing the flow rate of the fuel injector.17. The method as recited in claim 16 , wherein the at least one output value is ascertained with the aid of the data-based model claim 16 , using machine learning.18. The method as recited in claim 17 , wherein the data-based model is an artificial neural network.19. The method as recited in claim 16 , wherein the variable characterizing the flow rate of the fuel injector includes an absolute or relative flow rate of the fuel injector.20. The method as recited in claim 16 , wherein at least one activation parameter for the fuel injector is adapted based on the ascertained value for the variable characterizing the flow rate of the fuel injector.21. The method as recited in claim 16 , wherein the data-based model includes a ...

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Номер записи: 61
28-03-2019 дата публикации

ENGINE CONTROL DEVICE

Номер: US20190093586A1
Автор: Ito Makoto, Yamaguchi Ryotaro
Принадлежит:

An engine control device controls an engine including a turbo-supercharger, a waste gate valve, an air-bypass valve, and a high-pressure fuel system. The engine control device includes: an air-bypass valve control unit and an abnormality detection unit. The air-bypass valve control unit controls the air-bypass valve. The abnormality detection unit detects an abnormality in the high-pressure fuel system. The air-bypass valve control unit increases an opening degree of the air-bypass valve in accordance with detection of the abnormality by the abnormality detection unit. 1. An engine control device configured to control an engine , a turbo-supercharger that has a turbine to be driven by exhaust gas and a compressor to be driven by the turbine,', 'a waste gate valve provided in a waste gate passage that allows the exhaust gas to bypass the turbine,', 'an air-bypass valve provided in an air-bypass passage that allows fresh air to bypass the compressor, and', 'a high-pressure fuel system that has a high-pressure fuel pump configured to boost a pressure of fuel supplied from a feed pump and an injector configured to inject the fuel discharged by the high-pressure fuel pump,, 'the engine comprising'} an air-bypass valve control unit configured to control the air-bypass valve; and', 'an abnormality detection unit configured to detect an abnormality in the high-pressure fuel system,, 'the engine control device comprisingwherein the air-bypass valve control unit is configured to increase an opening degree of the air-bypass valve in accordance with detection of the abnormality by the abnormality detection unit.2. The engine control device according to claim 1 , further comprising:a waste gate valve control unit configured to control the waste gate valve, whereinthe abnormality detection unit performs first diagnosis and second diagnosis that needs a time longer than the first diagnosis,the waste gate valve control unit increases an opening degree of the waste gate valve and ...

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Номер записи: 62
28-03-2019 дата публикации

Fuel distributor

Номер: US20190093613A1
Автор: Joerg HORSTMANN, Markus Mehring
Принадлежит: Benteler Automobiltechnik GmbH

A fuel distributor features a pressure accumulator 2 with a longitudinal hollow space 3 to receive pressurized fuel. The pressure accumulator 2 possesses at least one threaded socket 7 which connects with the longitudinal hollow space 3 and which features interior threading 8 , and into which a threading cap 11 with exterior threading 13 is inserted. The threading socket 7 features a sealing surface 16 , which ends up being pressed onto a sealing seat 18 set up inside the pressure accumulator 2 . According to the invention, a leakage channel 27 is formed within the threading cap 11 . The configuration of the fuel distributor according to the invention with the leakage channel 27 in the threading socket 7 allows leakage testing under high pressure to be carried out during a short cycle or detection times, and with a high degree of precision.

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Номер записи: 63
16-04-2015 дата публикации

Diagnosing fault in common rail fuel system

Номер: US20150106040A1
Автор: Daniel R. Puckett, Nandagopal Methil
Принадлежит: Caterpillar Inc

A method of diagnosing a fault in a common rail fuel system having a proportional-integral-derivative (PID) controller includes determining a first integral output corresponding to a first fuel flow condition and a first rail pressure setting. The method includes comparing the first integral output with a threshold integral output and determining a second integral output corresponding to a second fuel flow condition and the first rail pressure setting, when the first integral output is greater than the threshold integral output. The method includes determining a third integral output corresponding to the first fuel flow condition and a second rail pressure setting, when the first integral output is greater than the threshold integral output. The method includes identifying a failure in at least one of a flow control valve arrangement and a pressure relief valve of the common rail fuel system based on the first, second, and the third integral outputs.

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Номер записи: 64
03-07-2014 дата публикации

USING RESISTANCE EQUIVALENT TO ESTIMATE TEMPERATURE OF A FUEL-INJECTOR HEATER

Номер: US20140182366A1
Автор: Cosby Douglas Edward, Czimmek Perry Robert, Hornby Michael Joseph
Принадлежит:

A temperature of a heated component is determined for control and monitoring. The heater driver, upon receipt of a turn-on signal, generates a current within a component of a heated fuel injector, wherein the current through the component generates an appropriate loss to generate heat for a variable spray fuel injection system. The heater driver regulates the energy to the heated component based on the electrical resistance of that component as a function of temperature and a predetermined reference value for that temperature. 1. A method comprising:differentially measuring a voltage drop across a fuel-injector heater;measuring an amount of electrical current passing through the fuel-injector heater;generating a voltage equivalent heater resistance by determining a division equivalent of dividing the differentially measured voltage drop across the fuel-injector heater by the measured amount of electrical current passing through the fuel-injector heater.2. The method of claim 1 , wherein differentially measuring the voltage drop across the fuel-injector heater further comprises using a pair of Kelvin connections to measure the voltage drop across the fuel-injector heater.3. The method of claim 1 , wherein measuring the amount of electrical current passing through the fuel-injector heater further comprises using a current sense resistor to measure the amount of electrical current passing through the fuel-injector heater.4. The method of claim 1 , wherein the voltage equivalent heater resistance is used as a temperature analog for control of the temperature of the fuel-injector heater.5. The method of claim 1 , further comprising: comparing the voltage equivalent heater resistance signal to a resistance reference value to generate an equivalent temperature rise signal.6. The method of claim 5 , further comprising: comparing the equivalent temperature rise signal to a temperature reference value to generate a temperature control signal that is configured to turn off the ...

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Номер записи: 65
13-04-2017 дата публикации

FUEL INJECTOR CALIBRATION METHOD AND APPARATUS

Номер: US20170101955A1
Автор: Bowling Bruce A., Grippo Albert C.
Принадлежит:

A method for calibrating an electronic fuel injector with a control module and the electronic fuel injector disposed on a test apparatus may include: setting a supply voltage to a control module; applying a control voltage signal having a pulse width to an electronic fuel injector by the control module; determining whether a fuel pressure of a fuel supply to the electronic fuel injector decreases by a predetermined amount; and in response to determining that the fuel pressure of the fuel supply to the electronic fuel injector decreases by the predetermined amount, recording the pulse width and the supply voltage to the control module. 2. The method of claim 1 , further comprising:in response to determining that the fuel pressure of the fuel supply to the electronic fuel injector does not decrease by the predetermined amount:determining whether an upper pulse width limit for the control voltage signal has been reached; andin response to determining that the upper pulse width limit has been reached,increasing the supply voltage to the control module;setting the pulse width of the control voltage signal to a minimum pulse width;applying the control voltage signal to the electronic fuel injector;determining whether the fuel pressure of the fuel supply to the electronic fuel injector decreases by the predetermined amount;in response to determining that the fuel pressure of the fuel supply to the electronic fuel injector decreases by the predetermined amount, recording the pulse width and the supply voltage to the control module.3. The method of claim 2 , further comprising:for each increase in the supply voltage to the control module, recording the pulse width and corresponding supply voltage that causes the fuel pressure of the fuel supply to the electronic fuel injector to decrease by the predetermined amount.4. The method of claim 3 , wherein the recording the pulse width and corresponding supply voltage comprises:storing in the storage unit each pulse width and ...

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Номер записи: 66
13-04-2017 дата публикации

REGULATION OF FUEL RAIL PRESSURE USING ELECTRONIC FUEL TRANSFER PUMP IN LOW PRESSURE FUEL CIRCUITS

Номер: US20170101959A1
Автор: Blizard Norman C., Linen Edward Nathan, MISHRA Shounak, Worthington Joseph Andrew
Принадлежит:

Systems and related methods for regulating fuel rail pressure for internal combustion engines utilizing an electronic fuel transfer pump (eFTP) on the low side to provide robust control of fuel pressure on the high side. The eFTP is in fluid communication with a low-pressure fuel circuit for providing a low-pressure fuel flow at a low pressure to a high-pressure pump. Upon failure of a fuel control valve, a pressure-responsive valve, and/or a pressure sensor impacting the high-side fuel pressure, the eFTP modulates the low-side fuel flow and/or low-side fuel pressure to mitigate damage to the engine. A controller in operative communication with the eFTP and/or one or more sensors is configured to provide a pump command to the eFTP in response to a failure condition impacting the high-side fuel pressure. 1. A method for operating a fuel system of an internal combustion engine comprising:providing a low-pressure (LP) fuel flow from an electronic fuel transfer pump to an inlet of a high-pressure (HP) pump fluidly coupled to an HP fuel circuit;monitoring a condition of the HP fuel circuit;detecting whether a failure condition is impacting a high-side fuel pressure;determining an electronic fuel transfer pump target value in response to the failure condition;commanding the electronic fuel transfer pump to provide a modulated LP fuel flow; andregulating a low-side fuel pressure in response to the electronic fuel transfer pump target value.2. The method of claim 1 , wherein the failure condition includes at least one of a press-responsive valve tripping claim 1 , a failure of the HP pump claim 1 , a failure of a fuel control valve claim 1 , or a failure of a HP sensor.3. The method of claim 2 , wherein determining the electronic fuel transfer pump target value comprises at least one of:in response to the pressure-responsive valve tripping, increasing at least one of an electronic fuel transfer pump flow, an electronic fuel transfer pump speed, or the low-side fuel pressure ...

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Номер записи: 67
02-06-2022 дата публикации

Method and device for ascertaining a closure point in time of an injector of an internal combustion engine with the aid of a machine learning system

Номер: US20220170436A1
Автор: Andreas Hopf, Erik Tonner, Frank Kowol, Jens-Holger Barth, Konrad Groh, Matthias Woehrle, Mona Meister, Roland Norden
Принадлежит: ROBERT BOSCH GMBH

A computer-implemented method for ascertaining a closure point in time of an injector of an internal combustion engine using a classifier. The method includes: ascertaining a time series of input signals, each corresponding to a point in time within the time series, and each characterizing a deformation of the injector; ascertaining a plurality of first values using the classifier based on the time series, in each case a first value corresponding to a point in time of the time series, and the first value characterizing a probability that the closure point in time of the injector matches the point in time; ascertaining a plurality of second values, each being a sum of neighboring first values, of a first value and the first value, the second value corresponding to the point in time to which the first value corresponds; ascertaining the closure point in time based on the largest second value.

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Номер записи: 68
19-04-2018 дата публикации

Fuel Supply System

Номер: US20180106226A1
Автор: STICHNOTH Andreas, STOPFER Markus, ZAHARIAS Manuel
Принадлежит:

A fuel supply system having a low pressure region, a pumping device to deliver fuel from the low pressure region to a high pressure region. In the high pressure region between the pumping device and injectors there is a pressure storage system that is permanently under high pressure. The pressure storage system has a plurality of distributor units each with at least three connections connected in series. A respective injector connection of each distributor unit is connected to at least one injector each via a high pressure line that is under high pressure at times dependent on the injection cycle. Each distributor unit of the pressure storage system is assigned an individual leakage detection device. Each distributor unit is assigned a non-return valve, which allows a leakage flow starting out from the respective distributor unit in the direction of the pumping device. 1. A fuel supply system configured as a common rail fuel supply system of an internal combustion engine comprising:a low pressure region;a high pressure region;a pumping device configured to deliver fuel from the low pressure region to the high pressure region;a plurality of high pressure lines that are permanently under high pressure;a pressure storage system that is permanently under high pressure arranged in the high pressure region between the pumping device and injectors assigned to cylinders of the internal combustion engine; a fuel feed connection;', 'a fuel drain connection; and', 'a injector connection,', 'wherein:', 'a fuel feed connection of a first distributor unit is connected to the pumping device via a respective high pressure line,', 'a respective fuel drain connection of the first distributor unit up to a penultimate distributor unit is connected to the fuel feed connection of the respective distributor unit located directly downstream via a respective high pressure line,', 'a fuel drain connection of a last distributor unit is closed, and', 'a respective injector connection of each ...

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Номер записи: 69
30-04-2015 дата публикации

Leak detection and mitigation in reductant delivery systems

Номер: US20150113960A1
Автор: Cary Henry, Michael J. Ruth
Принадлежит: Cummins Inc

Solid storage media stores a reductant in a reductant source that is released from the solid storage media in a gaseous form into an exhaust system. A leak detection and/or leak mitigation system, method and apparatus is disclosed for the gaseous reductant.

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Номер записи: 70
30-04-2015 дата публикации

DIRECT INJECTION SOLENOID INJECTOR OPENING TIME DETECTION

Номер: US20150114099A1
Автор: Fabre Francois, Moore Nicholas, Qiao Ningsheng
Принадлежит:

A direct injection, solenoid fuel injector includes at least one current sensing function capable of detecting a current draw of the solenoid and a controller function. The controller is capable of determining a fully open time of the direct fuel injector solenoid based on the application of a slope inflection filter and a slope discrimination filter to a derivative of the current draw. 1. A method for detecting an injector solenoid fully open time comprising:detecting a slope inflection in a derivative of a current draw of the injector solenoid during a data collection period using a slope inflection detection filter and a slope discriminator filter, thereby detecting a fully open time of a direct injector solenoid.2. The method of claim 1 , wherein the data collection period begins after a delay window has elapsed claim 1 , and wherein the delay window is a minimum solenoid opening time.3. The method of claim 1 , wherein detecting a slope inflection in a derivative of a current draw of the injector solenoid during a data collection period using the slope inflection detection filter and the slope discriminator filter comprises:collecting current draw data for a duration of a data collection window;determining an opening time detection window within said data collection window; andprocessing data within the opening time detection window using the slope inflection filter and the slope discrimination filter.4. The method of claim 3 , wherein determining an opening time detection window within said data collection window comprises:determining a maximum data point within said data collection window and starting the opening time detection window at said maximum data point; anddetermining a start time of a current holding phase and ending the opening time detection window at the start time of the current holding phase.5. The method of claim 3 , wherein processing data within the opening time detection window using the slope inflection filter and the slope discrimination ...

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Номер записи: 71
20-04-2017 дата публикации

GAUGING APPARATUS

Номер: US20170107961A1
Автор: Gonzalez Gonzalez Eduardo E., Morelos Eli
Принадлежит: CATERPILLAR INC.

A gauging apparatus for measuring a dimension of a component is provided. The gauging apparatus includes an upper nest configured to move along a first axis. The upper nest includes a first frame member and a second frame member. The second frame member is spaced apart from the first frame member along the first axis. The upper nest also includes a damping element disposed between the first frame member and the second frame member. The gauging apparatus also includes a lower nest fixedly coupled to a base of the gauging apparatus. The upper nest and the lower nest are configured to receive the component during the measuring thereof. 1. A gauging apparatus for measuring a dimension of a component , the gauging apparatus comprising: a first frame member;', 'a second frame member spaced apart from the first frame member along the first axis; and', 'a damping element disposed between the first frame member and the second frame member; and', 'a lower nest fixedly coupled to a base of the gauging apparatus,', 'wherein the upper nest and the lower nest are configured to receive the component during the measuring thereof., 'an upper nest configured to move along a first axis, the upper nest comprising2. The gauging apparatus of claim 1 , further comprising a shock absorber disposed adjacent to the lower nest claim 1 , the shock absorber configured to dampen shocks during the clamping of the component.3. The gauging apparatus of claim 1 , wherein the damping element includes a spring.4. The gauging apparatus of claim 1 , further comprising a sensing element disposed in the upper nest claim 1 , the sensing element configured to measure the dimension of the component.5. The gauging apparatus of claim 4 , wherein the sensing element is a Linear Variable Displacement Transducer (LVDT).6. The gauging apparatus of claim 1 , wherein the upper nest is slidably coupled to a frame of the gauging apparatus.7. The gauging apparatus of claim 1 , further comprising a lever configured to ...

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Номер записи: 72
29-04-2021 дата публикации

MAINTENANCE SYSTEM

Номер: US20210123405A1
Автор: Belsoeur Stephane, Faber Guillaume
Принадлежит:

The invention relates to a maintenance system for a fuel injection system provided in an internal combustion engine, the fuel injection system defining a hydraulic circuit having a high-pressure pump, a solenoid valve, a pressure sensor, a metering solenoid valve, a common rail and injectors. The maintenance system includes a manual control unit connected to a hydraulic unit, the hydraulic unit being capable of being inserted into the hydraulic circuit of the fuel injection system and including a test solenoid valve and a test pressure sensor mounted in a body provided with an inlet mouth, an outlet mouth and a leakage mouth. 110-. (canceled)11. A maintenance system for a fuel injection system equipping an internal combustion engine , the fuel injection system defining a hydraulic circuit including a high-pressure pump , a solenoid valve , a pressure sensor , a metering solenoid valve , a common rail , and injectors , the maintenance system comprising:a manual control unit connected to a hydraulic unit, the hydraulic unit being configured to be inserted into the hydraulic circuit of the fuel injection system and including a test solenoid valve and a test pressure sensor mounted in a body having an inlet port, an outlet port and a leakage port so that in use the test solenoid valve generates an artificial leak between a minimum fuel leakage volume and a maximum leakage volume inclusive, the test pressure sensor being configured to measure a pressure in the body of the hydraulic unit and also configured to generate and send a signal to the manual control unit which indicates the pressure in the body.12. The maintenance system as claimed in claim 11 , wherein the manual control unit includes a control box claim 11 , at least three electric cables each terminated by a specific connector configured to be connected to the solenoid valve of the fuel injection system and to the metering solenoid valve of the fuel injection system claim 11 , and wherein the maintenance ...

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Номер записи: 73
10-07-2014 дата публикации

PIEZOELECTRIC COMPONENT AND METHOD FOR PRODUCING A PIEZOELECTRIC COMPONENT

Номер: US20140191621A1
Автор: Benes Jan, Melcher Reinhold
Принадлежит: ROBERT BOSCH GMBH

A piezoelectric component (), which serves in particular as a piezoelectric sensor or a piezoelectric actuator, comprises a main body (). The main body () has a first ceramic layer (), a second ceramic layer () and an inner electrode layer (). An outer metallization () is provided here, applied to an outer side () of the main body () and contacting the inner electrode layer (). The main body () has a removal of material (), the removal of material () separating the outer metallization () from an end-face outer electrode (), which is formed by a metallization () of an end face () of the main body (). A method for producing a piezoelectric component () is also provided. 1121516175321724457762. A piezoelectric component () with a main body () , which has a first ceramic layer () , a second ceramic layer () and an inner electrode layer () , an outer metallization () being provided , applied to an outer side () of the main body () and contacting the inner electrode layer () , the main body () having a removal of material () and the removal of material () separating the outer metallization () from an end-face outer electrode () , which is formed by a metallization () of an end face () of the main body ().28269921059. The piezoelectric component according to claim 1 , characterized in that on a further end face () of the main body () that is remote from the end face () there is applied a metallization () claim 1 , which forms a further end-face outer electrode () claim 1 , and in that the main body () has a further removal of material () claim 1 , which separates the outer metallization () from the further end-face outer electrode ().3462. The piezoelectric component according to claim 2 , characterized in that the removal of material () is configured as a bevel that is provided on the end face () of the main body ().4253246262. The piezoelectric component according to claim 3 , characterized in that the main body () is based on a cylindrical configuration claim 3 , in ...

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Номер записи: 74
11-04-2019 дата публикации

METHODS AND SYSTEMS FOR FUEL INJECTION CONTROL

Номер: US20190107074A1
Автор: Morris Nathan, Skilling Mark Richard
Принадлежит:

Methods and systems are provided for continuously estimating a direct injector tip temperature based on heat transfer to the injector from the cylinder due to combustion conditions, and heat transfer to the injector due to flow of cool fuel from the fuel rail. Variations in the injector tip temperature from a steady-state temperature are monitored when the direct injector is deactivated. Upon reactivation, a fuel pulse width commanded to the direct injector is updated to account for a temperature-induced change in fuel density, thereby reducing the occurrence of air-fuel ratio errors. 1. An engine method , comprising:estimating a direct injector tip temperature different from fuel temperature based on cylinder conditions including cylinder combustion conditions and cylinder valve operation; andresponsive to deactivation or reactivation of a direct injector, adjusting one or more of a direct injection fuel pulse and a port injection fuel pulse based on each of the estimated direct injector tip temperature and fuel temperature.2. The method of claim 1 , wherein estimating based on cylinder combustion conditions includes estimating based on whether cylinder combustion is present or absent while the direct injector is deactivated claim 1 , the direct injector tip temperature increased higher than the fuel temperature when cylinder combustion is present claim 1 , the direct injector tip temperature decreased lower than the fuel temperature when cylinder combustion is absent.3. The method of claim 2 , wherein an increase in the direct injector tip temperature is raised relative to an increase in the fuel temperature as an average cylinder load increases when cylinder combustion is present.4. The method of claim 2 , wherein an increase in the direct injector tip temperature is raised relative to an increase in the fuel temperature as cylinder combustion air-fuel ratio becomes leaner than stoichiometry when cylinder combustion is present.5. The method of claim 1 , wherein ...

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Номер записи: 75
27-04-2017 дата публикации

FUEL VAPOR LINE DIAGNOSTICS

Номер: US20170114744A1
Автор: Dudar Aed M., Jentz Robert Roy, Martin Douglas Raymond
Принадлежит:

Methods and systems are provided for diagnosing fuel vapor leaks due to un-latching of quick connectors in interfaces of a fuel vapor system. In one example, a method may include using positive pressure generated in the intake manifold by reverse rotation of the engine unfueled, to detect un-latching of quick connectors in the fuel vapor system. After the positive pressure test, a negative pressure test is performed on the fuel vapor system to confirm any un-latching of quick connectors. 1. A method for a vehicle engine , comprising:reverse rotating an engine unfueled and opening a purge valve to apply positive pressure from an intake manifold on a fuel vapor system; andindicating disconnection of a connector coupled to a fuel vapor conduit of the fuel vapor system based on a pressure response following the application of positive pressure.2. The method of claim 1 , further comprising claim 1 , in response to the indicating claim 1 , limiting purging of a fuel vapor canister until an operator input indicative of connector recoupling is received.3. The method of claim 1 , wherein reverse rotating the engine unfueled and opening the purge valve includes initially reverse rotating the engine unfueled with the purge valve closed until intake manifold pressure is higher than a threshold claim 1 , and then opening the purge valve to apply the higher that threshold intake manifold pressure on the fuel vapor system claim 1 , wherein the reverse rotating includes rotating the engine in a direction opposite to the direction of engine rotation for propelling the vehicle.4. The method of claim 1 , wherein the indicating includes indicating imminent disconnection of the connector based on a higher than threshold drop in manifold pressure following the application of the positive pressure.5. The method of claim 1 , wherein the engine is coupled in a hybrid electric vehicle including an electric motor claim 1 , and wherein spinning the engine unfueled includes spinning the engine ...

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Номер записи: 76
07-05-2015 дата публикации

METHOD FOR DETECTING AN ERROR IN THE OPENING BEHAVIOR OF AN INJECTOR

Номер: US20150122000A1
Автор: AMLER Markus, Joos Klaus, Schenck Zu Schweinsberg Alexander, STIEF Florian, WILLIMOWSKI Markus
Принадлежит:

A method for detecting an error in the opening behavior of an injector of an internal combustion engine, the injector having an electromagnetically actuated valve element, a ballistic partial injection being carried out, the injector being ballistically activated, so that the valve element is not opened up to a lift stop, a ballistic closing delay period is determined, the determined ballistic closing delay period is compared with a reference value, and an error in the opening behavior of the injector is detected with the aid of the comparison. 1. A method for detecting an error in an opening behavior of an injector of an internal combustion engine , the injector having an electrically actuated valve element , the method comprising:performing a ballistic partial injection, wherein the injector is ballistically activated, the valve element not being opened up to a lift stop;determining a ballistic closing delay period;comparing the determined ballistic closing delay period with a reference value; anddetecting an error in the opening behavior of the injector based on the comparing.2. The method of claim 1 , wherein the ballistic partial injection precedes or succeeds a full stroke injection.3. The method of claim 1 , wherein a voltage signal is detected at the valve element and used to determine a closing delay period of the injector as a reference value.4. A method of claim 1 , wherein a diagnosis of the injector is carried out when an error in the opening behavior of the injector is detected claim 1 , it being checked whether an error is present in the opening behavior of the injector.5. The method of claim 4 , wherein an opening delay period of the injector is determined for checking whether an error is present in the opening behavior of the injector.6. The method of claim 1 , wherein the ballistic partial injection is carried out in a quantity and torque neutral manner.7. The method of claim 1 , wherein an error is detected in the opening behavior of a magnetic ...

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Номер записи: 77
04-05-2017 дата публикации

Fuel Injector, a Fuel Injector Assembly and an Associated Method

Номер: US20170122280A1
Автор: Mack David, Mawhinney Graeme, Stark Paul, Stockner Alan R.
Принадлежит: CATERPILLAR INC.

A fuel injector () is provided which comprises a valve member (), a valve member guide () and a spring chamber (). Discharge of fuel out of a fuel injector outlet () is controlled by movement of the valve member () within a bore () of the valve member guide (). The spring chamber () contains a biasing member (), for example a compression spring, which biases the valve member () into contact with a valve seat () when in a closed configuration. 1. A fuel injector comprising a valve member , a valve member guide , a spring chamber , a fuel supply passage and a cleaning fluid supply passage; 'the valve member guide defining a bore which receives the valve member, the bore being configured to guide the valve member during sliding movement of the valve member into and out of contact with the valve seat, the bore comprising a first end proximate the fuel injector outlet and a second end distal the fuel injector outlet;', 'the valve member being movable with respect to the valve member guide into and out of contact with a valve seat of the fuel injector to thereby control discharge of a fuel out of a fuel injector outlet;'} the fuel supply passage being configured to direct a flow of the fuel to an outlet chamber of the fuel injector, the outlet chamber being in fluid communication with the first end of the bore and the valve member; wherein the fuel supply passage by-passes the spring chamber;', 'the cleaning fluid supply passage being in fluid communication with the second end of the bore and configured to supply a pressurised cleaning fluid to the second end of the bore to restrict leakage of the fuel from the outlet chamber towards the second end of the bore along a clearance extending between the valve member and the valve member guide., 'the spring chamber containing a biasing member which biases the valve member into contact with the valve seat;'}2. A fuel injector as claimed in claim 1 , wherein pressurisation of the fuel within the outlet chamber enables sliding ...

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Номер записи: 78
25-08-2022 дата публикации

ALIGNMENT SYSTEM AND ASSOCIATED METHOD

Номер: US20220268248A1
Автор: Bailey Kevin, Dillen Eric, Flores Manuel Licon, Heher Brett, Jeffries Kent, Klingbeil Adam Edgar, Richerson Jay
Принадлежит:

An alignment system includes an optical sensor device that may be inserted into a passage of a body that is located between a fuel injector and a combustion chamber of an engine cylinder. The body is shaped to transmit fuel ejected from a spray hole in a fuel injector into the combustion chamber of the engine cylinder. The system also includes a controller that may examine output of the optical sensor device and determine whether the passage of the body is aligned with the spray hole of the fuel injector based on the output from the optical sensor device. The controller may change a position of one or more of the body or the fuel injector responsive to determining that the passage of the body is not aligned with the spray hole of the fuel injector. 1. A method comprising:inserting an optical sensor device into a passage of a body that is located between a fuel injector and a combustion chamber of an engine cylinder, the body configured to transmit fuel ejected from a spray hole in a fuel injector into the combustion chamber of the engine cylinder;determining whether the passage of the body is aligned with the spray hole of the fuel injector based on output from the optical sensor device; andchanging a position of one or more of the body or the fuel injector responsive to determining that the passage of the body is not aligned with the spray hole of the fuel injector.2. The method of claim 1 , wherein the body is a spray insert that mixes the fuel from the fuel injector with air as the fuel is transmitted through the spray insert.3. The method of claim 1 , wherein the body is a fuel duct.4. The method of claim 1 , wherein changing the position of the one or more of the body or the fuel injector includes one or more of rotating the body relative to the fuel injector or rotating the fuel injector relative to the body.5. The method of claim 1 , wherein changing the position of the one or more of the body or the fuel injector includes one or more of axially moving the ...

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Номер записи: 79
25-04-2019 дата публикации

FUEL INJECTOR

Номер: US20190120188A1
Автор: Moreau Christophe, Thibault Thierry
Принадлежит:

A fuel injector includes an injection nozzle with a body, in which a needle moves between a closed position, in which a first end of the needle rests on a seat, and an open position, in which the first end of the needle is lifted from the seat. The fuel injector also includes a control chamber, a control valve, and an upper guide guiding the needle axially by the second end thereof. An electric link in contact with the second end of the needle bring the needle to a predetermined electric potential. The needle is mounted in the body so as to be able to move therein while being electrically isolated from the body, except for the region of the seat, so that the needle is in electric contact with the body only in the closed position. 110-. (canceled)11. A fuel injector for an internal combustion engine , comprising:an injection nozzle with a nozzle body, in which a needle is arranged that can be moved between a closed position, in which a first end of the needle rests on a seat and seals injection openings of the injection nozzle, and an open position, in which the first end of the needle is lifted from the seat thereof in order to allow injection;a control chamber filled, during operation, with fuel so as to exert pressure on the second end of the needle;a control valve associated with the control chamber allowing fuel pressure in the control chamber to be selectively varied and thus control opening and closing movement of the needle, the control valve being driven by an actuator;an upper guide guiding the needle axially along an axis of the needle by the second end thereof; andmeans for detecting position of the needle;wherein the means for detecting position of the needle comprise a first electric link in contact with the second end of the needle so as to bring the needle to a predetermined electric potential; andwherein the needle is mounted in the nozzle body so as to be able to move therein while being electrically isolated from the nozzle body, except for the ...

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Номер записи: 80
27-05-2021 дата публикации

INJECTOR, AND DEVICE FOR DETECTING THE CONDITION OF SUCH AN INJECTOR

Номер: US20210156326A1
Автор: "DOUVENOU Lorand", Pirkl Richard, SCHÖFBÄNKER Norbert
Принадлежит:

The present invention relates to an injector for injecting fuel, comprising an injector housing, a movable nozzle needle which is arranged in the injector housing and has a nozzle needle tip, a nozzle needle seat for receiving the nozzle needle tip, and a mechanical switch which upon contact of the nozzle needle tip with the nozzle needle seat assumes a closed state and upon interruption of the contact assumes an open state, wherein the injector is provided with an input line and an output line for actuating a movement of the nozzle needle, and the switch includes a first terminal and a second terminal. The injector is characterized in that the first terminal of the switch is connected to the input line and the second terminal of the switch is connected to the injector housing. 11. An injector () for injecting fuel , comprising:{'b': '2', 'an injector housing (),'}{'b': '2', 'a movable nozzle needle which is arranged in the injector housing () and has a nozzle needle tip, and'}a nozzle needle seat for receiving the nozzle needle tip, wherein{'b': '3', 'a contact pairing of nozzle needle and nozzle needle seat constitutes a mechanical switch () which on contact of the nozzle needle tip with the nozzle needle seat assumes a closed state state and upon interruption of the contact assumes an open state,'}{'b': 1', '4', '5, 'the injector () is provided with an input line () and an output line () for actuating a movement of the nozzle needle,'}{'b': 3', '6', '7, 'the switch () includes a first terminal () and a second terminal (),'}{'b': 6', '3', '4, 'the first terminal () of the switch () is connected to the input line (), and'}{'b': 7', '3', '2, 'the second terminal () of the switch () is connected to the injector housing ().'}21634722. The injector () according to claim 1 , wherein between the first terminal () of the switch () and the input line () and/or between the second terminal () and the injector housing () claim 1 , a resistor (R) is connected.3145888845. The ...

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Номер записи: 81
12-05-2016 дата публикации

PRESSURE-PULSATED FATIGUE TEST AND SPECIMEN DESIGN

Номер: US20160131563A1
Автор: ELLISON MARK S., SHAFER SCOTT F., Wang Lifeng, WELLS ALAN W.
Принадлежит:

A method to test for fatigue in a test sample is disclosed. The method includes providing a specimen as the test sample. The specimen has a shoulder portion, a tubular sidewall that defines a bore, and an undercut wall segment. The sidewall includes a first thickness, which is greater than a second thickness of undercut wall segment. The method further includes providing a fixture that includes an insert and a clamp to retain the specimen, positioning the bore of the specimen substantially about the insert, and retaining the shoulder portion of the specimen by use of the clamp. Next, the method includes generating a cyclic loading within the bore by hydraulic pulsation between a first predetermined pressure and a second predetermined pressure, at a predetermined frequency. The test is carried through by maintaining and recording the cyclic loading until the specimen fails by fracture of the undercut wall segment. 1providing a specimen as the test sample, the specimen including, a shoulder portion, a tubular sidewall defining a bore, the tubular sidewall including an undercut wall segment, the tubular sidewall having a first thickness and the undercut wall segment having a second thickness, wherein the first thickness is greater than the second thickness;providing a fixture configured to retain the specimen that includes an insert and a clamp;positioning the bore of the specimen substantially about the insert and retaining the shoulder portion of the specimen by using the clamp;generating a cyclic loading within the bore by hydraulic pulsation between a first predetermined pressure and a second predetermined pressure at a predetermined frequency;maintaining the cyclic loading until the specimen fails by a fracture of the undercut wall segment; andrecording a plurality of cyclic loading to failure.. A method for testing for fatigue in a test sample, the method comprising: The present disclosure relates generally to a method to test fatigue in fuel system components. ...

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Номер записи: 82
19-05-2016 дата публикации

METHOD FOR CONTROLLING VEHICLE FUEL PUMP

Номер: US20160138513A1
Автор: KIM Hyun
Принадлежит:

A method for controlling fuel pump of vehicle includes sensing a vehicle door lock release signal, detecting a fuel pressure in a fuel line, and actuating the fuel pump so that the fuel pressure arrives at a predetermined target pressure when the detected fuel pressure is below a predetermined actuation pressure. 1. A method for controlling a fuel pump of a vehicle comprising:sensing a vehicle door lock release signal;detecting a fuel pressure in a fuel line; andactuating the fuel pump so the fuel pressure arrives at a predetermined target pressure when the detected fuel pressure is below a predetermined actuation pressure.2. The method for controlling the fuel pump of thea vehicle of claim 1 , wherein when the fuel pressure arrives at the target pressure claim 1 , the actuation of the fuel pump is stopped and an actuation completion count is accumulated.3. The method for controlling the fuel pump of the vehicle of claim 2 , wherein the sensing step further includes an actuation restriction step of judging whether the accumulated actuation completion count is below a predetermined actuation restriction number of times claim 2 , and not performing the actuation of the fuel pump when the accumulated actuation completion count is below the actuation restriction number of times.4. The method for controlling the fuel pump of the vehicle of claim 2 , wherein the accumulated actuation completion count is reset at the time of a vehicle start.5. The method for controlling the fuel pump of thea vehicle of claim 1 , wherein the detecting step further detects a fuel temperature and the fuel is a gas fuel claim 1 , and the predetermined actuation pressure is a pressure value at which the fuel can maintain a liquid state at the detected fuel temperature.6. The method for controlling the fuel pump of the vehicle of claim 5 , wherein the gas fuel is an LPG (Liquefied Petroleum Gas) fuel.7. The method for controlling the fuel pump of the vehicle of claim 1 , wherein the actuation ...

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Номер записи: 83
19-05-2016 дата публикации

METHOD AT FUEL INJECTION

Номер: US20160138544A1
Автор: BJUREFORS Daniel
Принадлежит:

A method is disclosed to determine the opening degree of injectors in cylinders in a combustion engine with at least three cylinders, wherein the injectors are connected to a fuel accumulator in a common rail fuel injection system, the fuel supply to the fuel accumulator is interrupted, and subsequently a test injection of fuel is carried out into at least two and at most all except one cylinder at a time, in different combinations, at such a time that the injection does not cause any combustion in the cylinders. The pressure decreases caused in connection with the different test injections are measured, and the pressure decrease which is attributable to at least one specific injector is calculated based thereupon, which is used in the determination of the injector's opening degree. 1. Method to determine the opening degree of injectors in cylinders in a combustion engine with at least three cylinders , wherein said injectors are connected to a fuel accumulator in a common rail fuel injection system and wherein the method starts when the fuel accumulator is pressurized , wherein the method comprises:a) interrupting the fuel supply to the fuel accumulator;b) controlling at least two, and at most all except one of the injectors, to simultaneously open at a specified time and to carry out a test injection of fuel into the associated cylinders, wherein the test injection is carried out at such point in time that the injection does not cause any combustion in such cylinders;c) measuring the pressure decrease in the fuel in the fuel accumulator resulting from the test injection;d) repeating operations b) and c) for a number of divergent combinations of injectors participating in the test injection, so that a subsequent operation e) may be carried out;e) calculating, based on measured pressure decreases during the test injections, the pressure decrease which is attributable to at least one specific injector; andf) comparing the pressure decrease calculated for said at ...

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Номер записи: 84
19-05-2016 дата публикации

SYSTEM AND METHOD FOR ESTIMATING HIGH-PRESSURE FUEL LEAKAGE IN A COMMON RAIL FUEL SYSTEM

Номер: US20160138545A1
Автор: BENSON Donald J., CAREY David M., Manglam Sanjay, Moonjelly Paul V.
Принадлежит:

A system and method for measuring fuel pressure decreases in a fuel accumulator of an internal combustion engine is provided. The system includes the ability to stop a fuel flow to a fuel accumulator of the engine. Pressure signals are transmitted to a control system of the engine until the fuel pressure in the fuel accumulator drops by a predetermined amount, at which time fuel flow is re-enabled. The pressure signals are then analyzed to determine the amount or quantity of fuel delivered by each fuel injector. The system and method maintain engine and emissions performance by limiting the amount of fuel pressure decrease in the fuel accumulator. 120-. (canceled)21. A system for determining a rate of fuel leakage in a fuel system of an internal combustion engine having a plurality of combustion chambers , the system comprising:a fuel accumulator positioned to receive a fuel flow;a sensor adapted to detect fuel pressure in the fuel accumulator including during a termination event;a plurality of fuel injectors, each fuel injector operable to deliver fuel from the fuel accumulator to one of the plurality of combustion chambers including during the termination event; anda control system adapted to stop the fuel flow to the fuel accumulator to define a beginning of the termination event, to determine a fuel leakage rate in the fuel system based on the fuel pressure detected during the termination event, and to restart the fuel flow to the fuel accumulator to define an end of the termination event.22. The system of claim 21 , wherein the fuel leakage rate is proportional to the square root of the fuel pressure.23. The system of claim 21 , the control system comprising an analysis module configured to analyze fuel pressure data corresponding to the fuel pressure detected during the termination event to determine whether to modify an operating parameter of at least one of the plurality of fuel injectors.24. The system of claim 21 , wherein the control system is configured ...

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Номер записи: 85
03-06-2021 дата публикации

SYSTEM AND METHOD FOR DETERMINING AND ADJUSTING FUEL INJECTION CONTROL PARAMETERS

Номер: US20210164415A1
Автор: BENSON Donald J.
Принадлежит:

A method of controlling an engine system includes controlling a fuel injector to perform a zero-fueling injector operation during operation of the engine, the zero-fueling injector operation including a non-zero injector on-time resulting in zero fueling by the injector, determining an injection system pressure change associated with the zero-fueling injector operation, modifying at least one fuel injection control parameter in response to the injection system pressure change, and using the modified fuel injection control parameter to control injection of fuel by the fuel injector during operation of the engine. 1. A method of controlling an engine system , the method comprising:controlling a fuel injector to perform a zero-fueling injector operation during operation of the engine, the zero-fueling injector operation including a non-zero injector on-time resulting in zero fueling by the injector;determining an injection system pressure change associated with the zero-fueling injector operation;modifying at least one fuel injection control parameter in response to the injection system pressure change; andusing the modified fuel injection control parameter to control injection of fuel by the fuel injector during operation of the engine.2. The method of wherein the at least one injection system pressure change comprises a fuel rail pressure change.3. The method of wherein the at least one fuel injection control parameter comprises a maximum injector on-time which will produce zero fueling at a given injection system pressure.4. The method of wherein a plurality of instances of the acts of controlling claim 1 , determining claim 1 , and modifying are performed separately for each of a plurality of fuel injectors.5. The method of any of wherein the acts of controlling claim 1 , determining claim 1 , and modifying are performed repeatedly during operation of the engine effective to adapt the at least one fuel injection control parameter to changes in the performance of ...

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Номер записи: 86
17-05-2018 дата публикации

INTERNAL-COMBUSTION ENGINE

Номер: US20180135553A1
Автор: HAIBARA Teruaki, KITAZUME Yoshiyuki, Takada Norifumi
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

An internal-combustion engine includes: a direct fuel injector directly injecting fuel into a combustion chamber; and a control device. The control device performs: presumption processing that presumes, based on an operating condition of the internal-combustion engine, that a thermoplastic deposit is formed on an injection hole portion of the direct fuel injector; temperature control processing that increases a temperature of the injection hole portion when the thermoplastic deposit is presumed to be formed; and first removal processing that injects the fuel from the direct fuel injector after the temperature control processing. 1. An internal-combustion engine comprising:a direct fuel injector directly injecting fuel into a combustion chamber; anda control device, whereinthe control device performs:presumption processing that presumes, based on an operating condition of the internal-combustion engine, that a thermoplastic deposit is formed on an injection hole portion of the direct fuel injector;temperature control processing that increases a temperature of the injection hole portion when the thermoplastic deposit is presumed to be formed; andfirst removal processing that injects the fuel from the direct fuel injector after the temperature control processing.2. The internal-combustion engine according to claim 1 ,wherein during a normal operation of the internal-combustion engine, the control device performs normal fuel injection control to control fuel injection from the direct fuel injector, andwherein in the first removal processing, the control device performs the normal fuel injection control.3. The internal-combustion engine according to claim 1 , further comprising a port fuel injector injecting fuel into an intake port claim 1 ,wherein in the temperature control processing, the control device decreases an amount of fuel injection from the direct fuel injector while increases an amount of fuel injection from the port fuel injector.4. The internal-combustion ...

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Номер записи: 87
18-05-2017 дата публикации

Method for Operating a Piezo Injector

Номер: US20170138290A1
Автор: Gargiso Tany, Kramel Manfred, Wiehoff Hans-Joerg
Принадлежит: Continental Automotive GmbH

The present disclosure relates to fuel injectors. The teachings may be embodied in a method for characterizing a hydraulic coupling element. The fuel injector may have a piston to pressurize a hydraulic medium and a pin connecting the piston to a piezoactuator. The method may include applying a charging current to the piezo actuator low enough that the leakage flow prevents a pressure differential and the nozzle needle remains closed; discharging the piezo actuator with a current high enough to release the mechanical connection between the piston and the pin; detecting when the piston impacts on the pin; and characterizing the coupling element based on the time between discharge and impact. 1. A method for controlling a fuel injector including a hydraulic coupling element with a piston placing a hydraulic medium under pressure and a pin which connects said piston to a piezo actuator , wherein the coupling element converts a translational stroke of the piezo actuator into a pressure differential to open the nozzle needle of a piezo injector , the method comprising:applying a charging current to the piezo actuator, the charging current low enough that the leakage flow produced by the coupling element prevents a pressure differential and the nozzle needle remains closed;discharging the piezo actuator with a current high enough to release the mechanical connection between the piston and the pin;generating a signal when the piston impacts on the pin;detecting the signal;measuring the time from a start of discharging to the detection of the impact of the piston on the pin;characterizing the coupling element based on the measured time; andcontrolling the actuation of the fuel injector based on the characterization of the coupling element.2. The method as claimed in claim 1 , wherein the measured time is used to monitor the wear of the coupling element.3. (canceled)4. A method for testing a fuel injector including a hydraulic coupling element with a piston placing a ...

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Номер записи: 88
18-05-2017 дата публикации

Pressure sensor

Номер: US20170138809A1
Автор: Andrew Willner, Calvin S. Reuter, Daniel Goncalves, Ernie Schoot Uiterkamp, Mark McBrine, Prasanth Ambady
Принадлежит: Sensata Technologies Inc

In an embodiment, a pressure sensor includes a tip secured to a port. The tip includes an opening for receiving pressure to be measured by the pressure sensor. The port includes a threaded section for mounting the pressure sensor in a fixture such as, for example, a rail. The port also includes a flexible section, a cavity, and an opening. The opening in the tip receives pressure from an outside source and channels the pressure to the opening of the port. The opening of the port receives the pressure from the tip and channels the pressure to the cavity. The pressure received in the cavity applies a force to the flexible section which flexes in response to the force. Moreover, forces are provided by the tip and the threaded section to keep the tip secured to the port.

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Номер записи: 89
07-08-2014 дата публикации

Method for Analyzing the Efficiency of the High-Pressure Pump of a Fuel Injection System

Номер: US20140222312A1
Автор: Hans Riepl, Janos Radeczky
Принадлежит: Continental Automotive GmbH

A method for analyzing the efficiency of a high-pressure pump of a fuel injection system includes analyzing the efficiency of the high-pressure pump with respect to individual pumping strokes of the high-pressure pump, detecting and analyzing the pressure build-up and the pressure drop for the individual pumping strokes, and drawing conclusions about the state of individual components of the high-pressure pump from the analysis of the pressure build-up or the pressure drop.

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Номер записи: 90
10-06-2021 дата публикации

Tank system

Номер: US20210170864A1
Автор: Armin Landstorfer, Gerd Köstler, Stefan Reber
Принадлежит: HAMM AG

A tank system for a construction machine includes a fuel tank having an outer tank wall that closes off a tank volume to the outside, a withdrawal tank volume, which is separated by a partition wall from a main tank volume of the tank volume and has a fuel-exchanging connection to the main tank volume, and a fuel withdrawal arrangement having a main fuel pump and a withdrawal line opening into the withdrawal tank volume for conveying fuel by the main fuel pump via the withdrawal line from the withdrawal tank volume to a fuel-consuming system region. The tank system also includes a fuel feed arrangement having an auxiliary fuel pump for conveying fuel from the main tank volume into the withdrawal tank volume.

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Номер записи: 91
28-05-2015 дата публикации

METHOD FOR ANALYZING INJECTOR PERFORMANCE

Номер: US20150149063A1
Автор: Michelotti Mark Brian, Shah Nirav Atul, Yerunkar Sumeet Suresh
Принадлежит:

Injector drift for a diesel engine are detected by reconfiguration of injection patterns from one pattern into a pattern with a different number of pulse points while attempting to hold total fuel injected constant. If a particular injector is subject to drift then changes in the pulse pattern result in an increase or decrease in fuel injected and consequential variations in engine speed. By applying alternating injection patterns at constant fuel demand and allowing engine speed time to stabilize, a rhythmic variation in engine speed/torque will appear which can be detected using one of a number of techniques. 1. A method for detecting injector drift on an internal combustion engine , the method comprising the steps of:establishing at least first and second patterns of fuel injection pulses for application to a cylinder of the internal combustion engine with the first and second patterns differing in number of fuel injection pulses while having the same nominal target amount of fuel to deliver;operating the engine at a target level steady state condition with the injectors for all cylinders being active;selecting at least a first cylinder to test;injecting fuel to the selected cylinder using each of the first and second patterns at least once during a period; anddetermining if engine speed varies with correlation to the predetermined sequence.2. The method of claim 1 , wherein the internal combustion engine is a four cycle diesel engine claim 1 , the step of injecting fuel involving alternating between the first and second patterns and engine speed varies with a one quarter order of engine crankshaft angular position.3. The method of claim 2 , the step of injecting fuel continuing until the frequency components of engine speed have stabilized.4. The method of claim 1 , further comprising the steps of:deselecting the currently selected cylinder; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'repeating the last three steps of .'}5. The method of where the ...

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Номер записи: 92
14-08-2014 дата публикации

Processing system and method for calculating pressure decreases due to injection events in a high-pressure fuel system

Номер: US20140224220A1
Автор: David Lee BALDWIN, David M. Carey, Donald J. Benson, Paul V. MOONJELLY
Принадлежит: Cummins Inc

A system and method is provided to analyze an intermediate pressure signal portion between an end of an injection event signal portion and a start of a subsequent injection event signal portion. The analysis is simplified by identifying a plurality of single cycle windows and calculating a single value, such as a mean or a median, for each of the windows. An intermediate portion single value is determined by averaging the single values for each of the windows. The intermediate portion single value may then be used to identify pumping events or leakage errors that occur during the intermediate pressure signal portion that affect further analysis of the intermediate pressure signal portion.

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Номер записи: 93
26-05-2016 дата публикации

SYSTEM AND METHOD FOR ESTIMATING HIGH-PRESSURE FUEL LEAKAGE IN A COMMON RAIL FUEL SYSTEM

Номер: US20160146144A1
Автор: BENSON Donald J., CAREY David M., Manglam Sanjay, Moonjelly Paul V.
Принадлежит:

A system and method for measuring fuel pressure decreases in a fuel accumulator of an internal combustion engine is provided. The system includes the ability to stop a fuel flow to a fuel accumulator of the engine. Pressure signals are transmitted to a control system of the engine until the fuel pressure in the fuel accumulator drops by a predetermined amount, at which time fuel flow is re-enabled. The pressure signals are then analyzed to determine the amount or quantity of fuel delivered by each fuel injector. The system and method maintain engine and emissions performance by limiting the amount of fuel pressure decrease in the fuel accumulator. 120-. (canceled)21. A system for determining a rate of fuel leakage in a fuel system of an internal combustion engine having a plurality of combustion chambers , the system comprising:a fuel accumulator positioned to receive a fuel flow;a sensor adapted to detect fuel pressure in the fuel accumulator including during a termination event;a plurality of fuel injectors, each fuel injector operable to deliver fuel from the fuel accumulator to one of the plurality of combustion chambers including during the termination event; anda control system adapted to stop the fuel flow to the fuel accumulator to define a beginning of the termination event, to determine a fuel leakage rate in the fuel system based on the fuel pressure detected during the termination event, and to restart the fuel flow to the fuel accumulator to define an end of the termination event.22. The system of claim 21 , wherein the fuel leakage rate is proportional to the square root of the fuel pressure.23. The system of claim 21 , the control system comprising an analysis module configured to analyze fuel pressure data corresponding to the fuel pressure detected during the termination event to determine whether to modify an operating parameter of at least one of the plurality of fuel injectors.24. The system of claim 21 , wherein the control system is configured ...

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Номер записи: 94
24-05-2018 дата публикации

CONTROLLING FUEL INJECTORS USING CORRELATED GAIN CURVE DATA

Номер: US20180142644A1
Автор: Cancellieri Angelo
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Methods and systems are provided for controlling fuel injectors included in a fuel injection system of an internal combustion engine of a vehicle. The fuel injection system includes a fuel rail. The methods and systems measure data for the fuel injector relating fuel injection flow rate and fuel injector energization time at a first rail pressure. The methods and systems transform the measured data using a correlation function t to correlated data relating fuel injection flow rate and injector energization time at a second rail pressure different from the first rail pressure. The methods and systems control the fuel injector using the correlated data relating fuel injection flow rate and injector energization time. 1. A method of controlling at least one fuel injector included in a fuel injection system of an internal combustion engine of a vehicle having a fuel rail , the method comprising:measuring data for the at least one fuel injector relating fuel injection flow rate and fuel injector energization time at a first rail pressure;transforming the measured data using a correlation function to correlated data relating fuel injection flow rate and injector energization time at a second rail pressure which is different from the first rail pressure; andcontrolling the at least one fuel injector using the correlated data relating fuel injection flow rate and injector energization time.2. The method according to claim 1 , wherein transforming the measured data using the correlation function comprises executing a rotation matrix.3. The method according to claim 2 , wherein transforming the measured data using the correlation function comprises executing a modified rotation matrix including at least one offset term.41. The method according to claim 2 , further comprising retrieving calibration parameters from a map of calibration parameters and using the calibration parameters in the correlation function.6. The method according to claim 1 , wherein the second rail ...

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Номер записи: 95
24-05-2018 дата публикации

DEVICE FOR MEASURING THE INJECTION RATE, METHOD FOR PRODUCING A DEVICE OF SAID TYPE, AND MEASURING METHOD

Номер: US20180142658A1
Автор: Fischer Thomas, Hartung Iris, Majer Clemens, Sander Wolfgang
Принадлежит:

A device () for measuring the injection rate dm(t)/dt of an injection valve () for a fluid (), wherein m(t) is the injection quantity of the fluid () as a function of the time (t), having a measurement volume () which is closed off on all sides and which is filled with a test fluid (), having an opening () in one wall () of the measurement volume () for the purposes of receiving the injection valve () such that the injection valve (), in the installed position, projects with at least one injection opening () into the measurement volume (), and having a pressure sensor () which is arranged in the measurement volume (), wherein correction means () are provided for determining the propagation time of a pressure wave (), which originates from the injection opening () and which propagates through the test fluid (), to the pressure sensor () and for correcting the measured injection rate dm(t)/dt, taking said propagation time into consideration, to give a rectified injection rate dm′(t)/dt. A method for producing the device (), wherein the characteristic map () is determined by way of a fluid-dynamic simulation of the time-dependent and position-dependent local speed of sound c(t,x) in a partial volume of the measurement volume () which encompasses at least the path () from the injection opening () to the pressure sensor (), which simulation is based on at least one time-dependent boundary condition for the pressure (p) in the measurement volume () and/or for the injection quantity (dm). A method for measuring the injection rate dm(t)/dt of an injection valve () for a fluid (). 11244aa. A device () for measuring the injection rate dm(t)/dt of an injection valve () for a fluid () , wherein m(t) is the injection quantity of the fluid () , said injection quantity being dependent upon the time t , said device comprising:{'b': 3', '4', '5', '5', '3', '2', '2', '2', '3, 'i': a', 'a, 'a measuring volume () which is enclosed on all sides and is filled with a testing fluid (), an ...

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Номер записи: 96
04-06-2015 дата публикации

Determining the Movement Behavior Over Time of a Fuel Injector on the Basis of an Evaluation of the Chronological Progression of Various Electrical Measurement Variables

Номер: US20150152830A1
Автор: Denk Frank, Rösel Gerd
Принадлежит: Continental Automotive GmbH

A method for determining the movement behavior of a fuel injector having a coil drive includes: (a) applying an electrical excitation to a coil of the coil drive, which prompts an opening movement of a valve needle; (b) recording the temporal progression of a first electrical measurement variable of the coil; (c) determining the time when the opening movement ends based on the recorded temporal progression of the first electrical measurement variable; (d) modifying the electrical excitation of the coil such that the valve needle performs a closing movement; (e) recording the temporal progression of a second electrical measurement variable of the coil; and (f) determining the time when the closing movement ends based on the recorded temporal progression of the second electrical measurement variable. One of the two measurement variables is the voltage present at the coil and the other is the intensity of current flowing through the coil. 1. A method for determining the movement behavior over time of a fuel injector having a coil drive for an internal combustion engine of a motor vehicle , the method comprising:applying an electrical excitation to a coil of the coil drive, which results in an opening movement of a valve needle coupled to a magnetic armature of the coil drive,recording a chronological progression of a first electrical measurement variable of the coil,determining a time when the opening movement ends based on the recorded chronological progression of the first electrical measurement variable,modifying the electrical excitation of the coil such that the valve needle executes a closing movement,recording a chronological progression of a second electrical measurement variable of the coil, anddetermining a time when the closing movement ends on the recorded chronological progression of the second electrical measurement variable,wherein one of the two measurement variables is represents a level of the voltage applied to the coil and the other of the two ...

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Номер записи: 97
25-05-2017 дата публикации

METHOD AND DEVICE FOR CHARACTERIZING AN INJECTOR

Номер: US20170145975A1
Автор: Fischer Thomas, Hartung Iris, Majer Clemens
Принадлежит:

The invention relates to a device for determining the mass of fluid () discharged by an injector (), the device comprising a housing () which is impermeable to fluid and which serves for storing fluid, said housing having an injector port () for the connection, in particular of an inlet (), of the injector () and having a fluid port () for the infeed of fluid (), wherein at least one pressure sensor () for pressure measurement is provided in the housing () in order, by way of an evaluation unit (), to determine the mass of the fluid () in the housing () in a manner dependent on the determined pressure. 121311113823121172131747213213. A device for determining the mass of a fluid () delivered by an injector () , comprising a fluid-impermeable housing () for fluid storage , the latter comprising an injector connection () configured to be connected to the injector () and a fluid connection () for feeding fluid () in , characterized in that at least one pressure sensor () for pressure measurement is provided in the housing () , in order to determine the mass of the fluid () in the housing () by means of an evaluation unit () on the basis of the pressure determined before and after delivery of fluid () by the injector () , and in that the evaluation unit () additionally evaluates the measurement values of a temperature sensor () and/or sound wave sensor () before and after delivery of fluid () by the injector () in order to determine the mass of the fluid () delivered by the injector () on a single-shot basis.245211. The device as claimed in claim 1 , characterized in that at least one temperature means (; ) for temperature measurement or temperature regulation of the fluid () in the housing () is provided in the housing ().34. The device as claimed in claim 2 , characterized in that the at least one temperature means comprises the temperature sensor ().45. The device as claimed in claim 2 , characterized in that the at least one temperature means comprises a temperature ...

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Номер записи: 98
21-08-2014 дата публикации

FUEL INJECTION FEEDBACK SYSTEM AND METHOD

Номер: US20140230531A1
Автор: Cueto Omar
Принадлежит:

A fuel injection feedback system comprises a light source disposed inside a fuel injector, an optical sensor disposed inside the fuel injector, and a computing device electronically connected to the optical sensor. The light source is a device configured to emit light capable of being reflected by cavitation. The light source could be disposed on or within the needle or nozzle of the fuel injector, or at a variety of other locations inside the fuel injector. The optical sensor is configured to detect an intensity of light caused by receiving light reflected from cavitation occurring inside the fuel injector. 1. A method of obtaining feedback from a fuel injector in a combustion engine , the method comprising the steps of:receiving, via an optical sensor disposed inside the fuel injector, light reflected from cavitation;determining a start time of a fuel injection pulse by detecting the occurrence of a disturbance in the intensity of light reflected by the cavitation and received by the optical sensor;determining a stop time of the injection pulse by detecting the disappearance of the disturbance in the intensity of light reflected by the cavitation and received by the optical sensor; anddetermining the duration of the injection pulse by using a computational device to compare the time difference between said stop time and said start time.2. The method of claim 1 , further comprising the step of directing light claim 1 , via a light source disposed inside the fuel injector claim 1 , toward cavitation such that the light is reflected by the cavitation.3. The method of claim 1 , further comprising the step of combining the time duration of the injection pulse with the flow rate indicated by a flow meter claim 1 , wherein said flow meter is adapted to measure the flow of liquid dispersed by the fuel injector.4. The method of claim 2 , further comprising the step of combining the time duration of the injection pulse with the flow rate indicated by a flow meter claim 2 , ...

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Номер записи: 99
02-06-2016 дата публикации

Identifying fuel system degradation

Номер: US20160153388A1
Автор: Ethan D. Sanborn, Imad Hassan Makki, Pankaj Kumar, Ross Dykstra Pursifull
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Various methods are thus provided for identifying degradation in a fuel system. In one embodiment, a method of operating a fuel system comprises applying a pulse to a fuel pump responsive to detecting that lift pump pressure corresponds to a fuel vapor pressure, ceasing application of the pulse responsive to detecting that the lift pump pressure corresponds to a relief setpoint pressure, and indicating degradation in the fuel system if the detected lift pump pressure deviates from an expected fuel rail pressure, including distinguishing among degradation in the fuel pump, a lower pressure fuel pressure sensor, a fuel rail pressure sensor, and a pressure relief valve.

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Номер записи: 100