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Небесная энциклопедия

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

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Мониторинг СМИ

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

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 19603. Отображено 100.
10-03-2013 дата публикации

Подогрев топлива при холодном запуске бензинового двигателя с непосредственным впрыском топлива

Номер: RU0000125633U1

Установлено, что бензиновые двигатели с непосредственным впрыском топлива выбрасывают твердые частицы на протяжении первых 500 секунд работы из-за топлива, ударяющегося о поверхности камеры сгорания. Для того чтобы значительно предотвратить попадание топлива на поверхности в камере сгорания, топливо можно подогревать. В одном варианте осуществления охлаждающая жидкость двигателя, которая нагревается в частях водяной рубашки, ближайших к выпускным каналам, подается непосредственно в трубку в физическом контакте с направляющей-распределителем для топлива. В некоторых вариантах осуществления трубка оснащена электрическим нагревательным элементом. Если в начальные части холодного запуска насос охлаждающей жидкости выключен, температуру топлива в направляющей-распределителе для топлива повышает электрический нагреватель. После того температура охлаждающей жидкости двигателя повышается, в трубку рядом с направляющей-распределителем для топлива подается вода, теплая охлаждающая жидкость, а нагреватель выключается. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 125 633 (13) U1 (51) МПК F02M 31/16 (2006.01) F02M 53/02 (2006.01) F02N 19/10 (2010.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21)(22) Заявка: 2011141174/06, 11.10.2011 (24) Дата начала отсчета срока действия патента: 11.10.2011 (72) Автор(ы): УЛРИ Джозеф Норман (US), ПЕРСИФУЛЛ Росс Дикстра (US) (73) Патентообладатель(и): Форд Глобал Технолоджис, ЛЛК (US) R U Приоритет(ы): (30) Конвенционный приоритет: 11.10.2010 US 12/901,624 (45) Опубликовано: 10.03.2013 Бюл. № 7 1 2 5 6 3 3 R U (57) Формула полезной модели 1. Бензиновый двигатель с непосредственным впрыском топлива, содержащий: направляющую-распределитель для топлива; топливные форсунки, сообщающиеся с направляющей-распределителем для топлива и подающие топливо в цилиндры двигателя; и контур охлаждающей жидкости, содержащий насос охлаждающей жидкости, предназначенный для циркуляции охлаждающей жидкости через ...

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27-05-2013 дата публикации

Встроенный клапан

Номер: RU0000128663U1

1. Выпускной клапан, содержащий первую заслонку, выполненную с возможностью перекрытия первой части перепускного трубопровода турбины и первой части впускного трубопровода турбины; и вторую заслонку, выполненную с возможностью перекрытия второй части перепускного трубопровода турбины и второй части впускного трубопровода турбины, причем перепускной трубопровод турбины находится по существу в полностью заблокированном состоянии, когда первая и вторая заслонки вместе расположены в первой плоскости.2. Выпускной клапан по п.1, отличающийся тем, что первая заслонка и вторая заслонка по существу полностью блокируют впускной трубопровод турбины, когда указанные заслонки вместе расположены во второй плоскости.3. Выпускной клапан по п.2, отличающийся тем, что первая заслонка вложена в кольцо второй заслонки, когда первая и вторая заслонки расположены в первой или во второй плоскости.4. Выпускной клапан по п.2, отличающийся тем, что первая плоскость перпендикулярна перепускному трубопроводу турбины, а вторая плоскость перпендикулярна впускному трубопроводу турбины.5. Выпускной клапан по п.1, отличающийся тем, что каждая из указанных заслонок выполнена с возможностью поворота на одной приводной оси.6. Выпускной клапан по п.1, отличающийся тем, что выполнен с возможностью установки по меньшей мере в два состояния: первое состояние, при котором первая и вторая заслонки расположены так, что проход выхлопных газов во впускной трубопровод турбины по существу полностью заблокирован, и второе состояние, при котором первая и вторая заслонки расположены так, что проход выхлопных газов в перепускной трубопровод турбины по су� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 128 663 (13) U1 (51) МПК F02B 41/10 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21)(22) Заявка: 2012107683/06, 01.03.2012 (24) Дата начала отсчета срока действия патента: 01.03.2012 (72) Автор(ы): ВЕЙД Роберт Эндрю (US), НАДДАФ Фади Марун (US) (45) ...

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27-09-2014 дата публикации

Вакуумная система двигателя транспортного средства

Номер: RU0000145685U1

1. Вакуумная система для транспортного средства, включающая в себя двигатель с впускным каналом для воздуха и вакуумное устройство, которое имеет участок для впуска рабочей среды, расширяющийся выпускной участок, расположенный внутри указанного впускного канала, и всасывающее отверстие.2. Система по п.1, в которой вакуумное устройство представляет собой эжектор.3. Система по п.1, в которой вакуумное устройство представляет собой трубку Вентури.4. Система по п.1, которая дополнительно содержит воздушный компрессор, расположенный вдоль впускного канала двигателя и предназначенный для подачи воздуха к впускному отверстию рабочей среды.5. Система по п.4, в которой расширяющийся выпускной участок вакуумного устройства расположен выше по потоку от впуска воздушного компрессора.6. Система по п.1, в которой всасывающее отверстие находится в пневматическом сообщении с вакуумным бачком, который обеспечивает отрицательное давление для потребителей вакуума в транспортном средстве. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 145 685 U1 (51) МПК F02B 29/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ (21)(22) Заявка: ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2013141818/06, 12.09.2013 (24) Дата начала отсчета срока действия патента: 12.09.2013 (72) Автор(ы): КАННИНГЭМ Ральф Уэйн (US), ПЕРСИФУЛЛ Росс Дикстра (US) (73) Патентообладатель(и): Форд Глобал Технолоджис, ЛЛК (US) Приоритет(ы): (30) Конвенционный приоритет: R U 12.09.2012 US 13/612,177 (45) Опубликовано: 27.09.2014 Бюл. № 27 1 4 5 6 8 5 R U (57) Формула полезной модели 1. Вакуумная система для транспортного средства, включающая в себя двигатель с впускным каналом для воздуха и вакуумное устройство, которое имеет участок для впуска рабочей среды, расширяющийся выпускной участок, расположенный внутри указанного впускного канала, и всасывающее отверстие. 2. Система по п.1, в которой вакуумное устройство представляет собой эжектор. 3. Система по п.1, в которой вакуумное устройство представляет собой ...

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19-01-2012 дата публикации

Emission deterioration informing device

Номер: US20120016563A1
Автор: Satoru Ohsaki
Принадлежит: Denso Corp

An emission deterioration informing device senses actual injection timing, at which fuel injection is actually performed from an injector. The device calculates a deviation amount of the sensed actual injection timing from target injection timing. The device has a warning light for informing deterioration of exhaust emission when the calculated deviation amount is larger than a predetermined threshold value. The device determines whether an operation state of an internal combustion engine is an impact state, in which the exhaust emission receives a predetermined influence or more from the deviation of the actual injection timing from the target injection timing. The device allows lighting of the warning light when the operation state is determined to be the impact state. The device prohibits the lighting of the warning light when the operation state is not determined to be the impact state.

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12-04-2012 дата публикации

Use of pressurized fuels in an internal combustion engine

Номер: US20120085314A1
Автор: James M. Cleeves
Принадлежит: Pinnacle Engines Inc

An amount of inlet air can be delivered to a combustion volume of an internal combustion engine via an air inlet port, and delivery of an amount of a fuel from a compressed fuel reservoir to the combustion volume can be controlled via a pressurized fuel inlet port positioned to the deliver the amount of the fuel directly into the combustion volume separately from the air inlet port. The amount of the fuel can be controlled relative to the amount of the inlet air to create an air-fuel mixture within the combustion volume having a target air/fuel ratio. In other aspects, a vehicle chassis can be designed to incorporate a compressed fuel reservoir as a structural part of the chassis. Methods, system, and articles of manufacture relating to these features are described.

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26-04-2012 дата публикации

Two-stroke engine with a compressed-air-assisted fuel-injection system

Номер: US20120097141A1
Автор: Nicola Cerreto
Принадлежит: Emak SpA

A two-stroke internal combustion engine is provided and includes a casing, a cylinder, a piston skirt, an aspirating port, a carburetor which supplies the casing with an air/fuel mixture, through said aspirating port, a transfer conduit which opens into the cylinder through an air/fuel inlet port, and a fuel storage system, or resonance tube which communicates with a first port located above the aspirating port, and with a second port located below the aspirating port. The first port and the second port are alternatingly opened by the piston skirt, which includes a through-hole having a diameter between 0.5 and 3.0 mm. The through-hole being located, when the piston is mounted in the engine, in a same radial plane as the second port.

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24-05-2012 дата публикации

Engine assembly including combustion chambers with different port arrangements

Номер: US20120125282A1
Автор: Alan W. Hayman
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

An engine assembly may include an engine block, a first piston, a second piston, and a cylinder head. The first piston may be located in a first cylinder bore and the second piston may be located in a second cylinder bore. The cylinder head may be coupled to the engine block and cooperate with the first cylinder bore and the first piston to define a first combustion chamber and with the second cylinder bore and the second piston to define a second combustion chamber. The cylinder head may define a first intake and exhaust port arrangement in communication with the first combustion chamber and may define a second intake and exhaust port arrangement in communication with the second combustion chamber. The second intake and exhaust port arrangement may include a greater total number of ports than the first intake and exhaust port arrangement.

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07-06-2012 дата публикации

Hydrocarbon Retaining System Configuration for Combustion Engine

Номер: US20120137659A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Systems, methods, and computer readable storage media are described in which exhaust gas is routed to a hydrocarbon retaining device during starting, and purged to the engine intake manifold. Various alternative approaches are described for controlling operation and diagnosing degradation. Further, various interrelated configurations are described.

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14-06-2012 дата публикации

Carburetor

Номер: US20120146249A1
Принадлежит: Husqvarna Zenoah Co Ltd

In a carburetor ( 1 ) including a choke valve ( 7 ) on the upstream side inside an aspiration passage ( 3 ) and a throttle valve ( 8 ) on the downstream side, the valves ( 7 ) and ( 8 ) are disposed at positions such that the valves adjacently oppose each other when having been turned to be in the fully open state, a bulging part ( 11 ) that bulges toward the region (A 1 ) between the adjacently opposing valves ( 7 ) and ( 8 ) is integrally provided inside a venturi ( 9 ), and the aspiration passage ( 3 ) is divided into an air-fuel mixture passage ( 4 ) located on the side where a main jet ( 10 ) is provided and an air passage ( 5 ) through which leading air circulates by the bulging part and the valves ( 7 ) and ( 8 ), both of which are in the fully open condition.

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30-08-2012 дата публикации

Fuel supply device

Номер: US20120216779A1
Принадлежит: Denso Corp, Nippon Soken Inc

A fuel supply device includes: an injector that injects and supplies fuel to an engine; a pressure accumulator communicating with a cylinder of the engine through a communication passage; a valve that opens or closes the communication passage; and a controller that controls the injector and the valve. When the engine is rotated, an air-fuel mixture is compressed in the cylinder, and an accumulating portion of the controller accumulates the air-fuel mixture in the pressure accumulator. When the engine is restarted, a supplying portion of the controller supplies the air-fuel mixture accumulated in the pressure accumulator to the cylinder.

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27-09-2012 дата публикации

Stratified scavenging two-cycle engine and carburetor

Номер: US20120240907A1
Автор: Ryou Ono, Takeshi Watanabe
Принадлежит: Husqvarna Zenoah Co Ltd

A stratified scavenging two-cycle engine ( 10 ) comprising an engine body ( 11 ), a carburetor ( 12 ) equipped with a pivotable rotary valve ( 22 ) for switching between opening and closing of a single intake path, and an insulator ( 13 ) having heat insulating performance. The rotary valve ( 22 ) of the carburetor ( 12 ) is provided with a fuel injecting nozzle opening ( 26 ) open downward. The nozzle opening ( 26 ) is provided with a guide section ( 26 A) by which fuel from the nozzle opening ( 26 ) is guided to a position corresponding to a position upstream in a mixed gas path ( 27 ).

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08-11-2012 дата публикации

Two-stroke internal combustion engine with variable compression ratio and an exhaust port shutter and a method of operating such an engine

Номер: US20120283932A1
Принадлежит: Lotus Cars Ltd

A two-stroke internal combustion engine for varying the compression ratio and the area of an exhaust port of a cylinder includes at least one piston reciprocable within a cylinder, an exhaust port opened and closed by the piston during the reciprocal motion thereof, moveable shutter means for varying the effective area of the exhaust port, a compression ratio variation mechanism for varying a compression ratio of the cylinder, sensor means for measuring one or more operating characteristics of the engine and for generating signals corresponding thereto, and a control unit which processes the signals generated by the sensor means and controls the motion of the shutter means accordingly and controls the compression ratio variation mechanism to vary the compression ratio of the cylinder; wherein the engine can operate with a compression ratio in the range 30:1 to 50:1.

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22-11-2012 дата публикации

Fuel injection system

Номер: US20120291748A1
Принадлежит: Denso Corp, Nippon Soken Inc

A fuel injector is provided in a cylinder block of a spark-ignition direct injection engine. The fuel injector is arranged in such a manner that a fuel injection port is closed by a piston of the engine when the piston is positioned at a top dead center. The fuel injection port is opened when the piston is positioned at a specified position which is far from the top dead center by a specified distance.

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06-12-2012 дата публикации

Two-stroke engine with low consumption and low emissions

Номер: US20120304972A1
Автор: Piero Baldini
Принадлежит: Primavis Srl

Two-stroke engine ( 10 ) including an engine cylinder ( 18 ), a piston ( 20 ) sliding in the engine cylinder ( 18 ), an air pump ( 9 ), a main pipe ( 32 ) connected to the air pump ( 9 ) that communicates with the engine cylinder ( 18 ) through a plurality of scavenging pipes ( 28 ) opening into the cylinder immediately above the piston ( 20 ) in its bottom dead center position, an exhaust pipe also opening into the cylinder ( 18 ) immediately above the piston ( 20 ) in its bottom dead center position, an auxiliary pipe ( 29 ) branching from the main pipe ( 32 ) and opening into the cylinder ( 18 ) at a level higher than the scavenging pipes ( 28 ) and exhaust pipes ( 33 ), and a valve ( 30 ) capable of selectively opening and closing the auxiliary pipe ( 29 ) and configured to supercharge and decompress the cylinder ( 18 ) during the engine start-up phase.

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03-01-2013 дата публикации

Approach for Controlling a Vehicle Engine That Includes an Electric Boosting Device

Номер: US20130006507A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

A method of operating a vehicle including an engine is provided. The engine may include at least one cylinder, a boosting device to boost intake air to the at least one cylinder, a fuel tank, a fuel vapor canister to store fuel vapors vented from the fuel tank, and an emission control device to treat exhaust gas from the engine. The boosting device includes a compressor at least partially driven by an electric motor. The method includes during an engine cold start condition, operating the electric motor of the boost device to boost intake air, directing the boosted intake air through the fuel vapor canister to release a fuel vapor stored in the fuel vapor canister, directing the fuel vapor from the fuel vapor canister to the engine, and performing combustion in the at least one cylinder using the fuel vapor during the engine starting.

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31-01-2013 дата публикации

Rotary internal combustion engine with phasing gear

Номер: US20130028774A1
Принадлежит: Pratt and Whitney Canada Corp

In one aspect, described is a rotor of a rotary internal combustion engine, including a phasing gear with an annular meshing section including a plurality of radially inwardly oriented teeth and an annular attachment section connected to the meshing section and coaxial therewith, the attachment section being offset axially inwardly from the teeth and having at least a portion thereof located radially inwardly of the teeth, and a fastener apparatus connecting the phasing gear to the rotor body, the fastener apparatus engaging the rotor body radially inwardly of the teeth.

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14-03-2013 дата публикации

Method and system for improving engine starting

Номер: US20130066539A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

An engine system and method for improving engine starting are disclosed. In one example, engine port throttles are adjusted differently during automatic and operator initiated engine starts. The system and method may improve engine torque control during an engine start.

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14-03-2013 дата публикации

Method and system for adjusting port throttles

Номер: US20130066540A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

An engine system and method for improving engine starting are disclosed. In one example, two engine cylinder port throttles are adjusted differently during engine starting. The system and method may improve engine torque control during an engine start.

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04-04-2013 дата публикации

Structure for preventing surge of 2-cylinder engine

Номер: US20130081597A1
Автор: Sung Youb PARK
Принадлежит: Hyundai Motor Co

A structure for preventing surge of a 2-cylinder engine may include a first line communicating a crank room of the engine with a cylinder head cover, a first valve which may be disposed on the first line and allows a fluid within the crank room to flow into the cylinder head cover, a second line communicating the crank room of the engine with an intake manifold and a second valve which may be disposed on the second line and allows a fluid within the intake manifold into the crank room.

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18-04-2013 дата публикации

Piston for spark-ignition engine

Номер: US20130092116A1
Принадлежит: Kolbenschmidt KK, Mazda Motor Corp

The present invention provides a piston for a spark-ignition engine, comprising: a land part 18, an upper surface part of which has a crown part 26 forming a combustion chamber; a pair of skirt parts 20 extending downward from a peripheral part of the land part 18 and facing each other in a radial direction thereof; a pair of sidewall parts 19 coupling side end parts of the pair of skirt parts 20 to each other; and a pin boss part 21 that is formed in each of the sidewall parts 19. The present invention can inhibit the generation of HC produced at the time of combustion, while thermally protecting a top ring 30 fitted into a top ring groove 24 a on an outer circumferential surface of the land part 18. The crown part 26 is configured by a flat base surface 27 and a bulging part 15 bulging upward above the base surface 27, and a thinned part 40 provided in the land part 18 is formed deep such that the deepest part thereof is positioned inside the bulging part 15.

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02-05-2013 дата публикации

Exhaust gas recirculation in a reciprocating engine having a multiple-stroke configuration

Номер: US20130104542A1
Автор: Adam Edgar Klingbeil
Принадлежит: General Electric Co

An engine comprising at least two cylinders and a turbocharger that includes a turbine operationally attached to a compressor. The intake air for the cylinders is routed through the compressor and exhaust gas from one of the cylinders is recirculated to the air fuel mixture for both cylinders, which exhaust gas from the other cylinder is routed through the turbine, further wherein the first reciprocating cylinder operates on a four-stroke cycle and the second reciprocating cylinder operates on a two-stroke cycle. Methods of operating an engine are disclosed. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.

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09-05-2013 дата публикации

Method and system for valve operation control

Номер: US20130116866A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Methods and systems are provided for raising the speed of a hybrid electric vehicle operating in an electric-only mode. During conditions when the vehicle is driven only by an electric motor, vehicle speed may be raised by spinning the engine unfueled using power from a system battery, while adjusting valve operation to reduce engine pumping losses. In this way, vehicle speed may be raised more efficiently and without damaging rotating transmission components.

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16-05-2013 дата публикации

Methods and systems for engine starting

Номер: US20130124067A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Methods and systems are provided for controlling a vehicle system including an engine that is selectively deactivated during engine idle-stop conditions and selectively reactivated during engine restart conditions. One example method comprises, during an engine restart from an idle stop, performing a first combustion event in a cylinder with a piston at an engine crankshaft position that is after a crankshaft position at which said cylinder's exhaust valve opens, and before a crankshaft position at which the cylinder's intake valve closes, during a cycle of said cylinder. In this way, inaccuracies in cylinder aircharge estimation may be reduced, thereby also reducing air-fuel ratio errors and improving the quality and repeatability of engine restarts.

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06-06-2013 дата публикации

Method and system for pre-ignition control

Номер: US20130139786A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Methods and systems are provided for addressing pre-ignition that may be induced in response to actions taken to mitigate a cylinder misfire. An amount of engine load limiting applied may be adjusted to reduce the likelihood pre-ignition while also addressing component over-temperature issues. By limiting an engine load while shutting off fuel in a misfiring cylinder, and while combusting a lean air-fuel mixture in the remaining cylinders, pre-ignition induced by the misfire-mitigating lean combustion conditions can be reduced.

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22-08-2013 дата публикации

Engine working machine

Номер: US20130213356A1
Автор: Takuhiro Murakami
Принадлежит: HITACHI KOKI CO LTD

There is provided an engine working machine operated by an engine including a fuel tank, a carburetor and a crankcase, wherein the engine working machine is provided with a fuel supply path configured to supply an additional fuel in an interior of a crank chamber at a time of starting and an starting aid device including a solenoid valve configured to open/close the fuel supply path. The solenoid valve provided inside the starting aid device is controlled by a control unit equipped by a control circuit board and is driven by power of the battery so as to open/close a fuel inlet hole. At the time of starting the engine, the control unit controls opening/closing the solenoid valve at an appropriate timing, so that the fuel is directly inlet to the interior of the crank chamber.

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19-09-2013 дата публикации

Catalyst for Use in a Process for Purifying Exhaust Gas from Gasoline Engines of a Fuel-direct-injection Type

Номер: US20130239555A1

A catalyst for use in a process for purifying exhaust gas from a gasoline engine of the fuel-direct-injection type that varies, in response to changes in the air-fuel ratio, between a first exhaust-gas state featured by an air-fuel ratio in the vicinity of the stoichiometrical air-fuel ratio, and a second exhaust-gas state that forms a more oxidizing, low-temperature atmosphere and that is featured by an air-fuel ratio greater than the stoichiometrical air-fuel ratio, the catalyst being obtained by causing a noble metal and a rare-earth oxide and/or a transition metal to be carried by or to be mixed with a fire-resistant inorganic oxide.

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24-10-2013 дата публикации

Method and system for valve operation control

Номер: US20130281257A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Methods and systems are provided for raising the speed of a hybrid electric vehicle operating in an electric-only mode. During conditions when the vehicle is driven only by an electric motor, vehicle speed may be raised by spinning the engine unfueled using power from a system battery, while adjusting valve operation to reduce engine pumping losses. In this way, vehicle speed may be raised more efficiently and without damaging rotating transmission components.

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05-12-2013 дата публикации

Heat engine

Номер: US20130318938A1
Принадлежит: ULTRAMO Ltd

A non-compression engine having two or three variable volume mechanisms, an induction-displacer ( 1 ) and a combustion-expander ( 2 ) or an induction-displacer ( 1 ) and a combustion-expander ( 2 ) and an atmospheric-cooler ( 3 ). A working volume of gas is drawn into the induction-displacer, then displaced into the combustion-expander ( 2 ) at substantially constant volume passing through the regenerator ( 5 ). The gas in the combustor-expander ( 2 ) is further heated by combustion of a fuel then expanded to extract work. The gas is then displaced through the regenerator ( 5 ) into the atmospheric-cooler ( 3 ) at substantially constant volume, or exhaust from the regenerator at constant pressure. The gas is contracted in the atmospheric-cooler doing atmospheric work. Once the gas has equilibrated with the pressure of the atmosphere it is exhaust from the atmospheric-cooler ( 3 ).

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30-01-2014 дата публикации

Variable valve timing for egr control

Номер: US20140026872A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Methods and systems are provided for adjusting cylinder valve timings to enable a group of cylinders to operate and combust while another group of cylinders on a second are selectively deactivated. Valve timing may be adjusted to allow flow of air through the inactive cylinders to be reduced, lowering catalyst regeneration requirements upon reactivation. The valve timing may alternatively be adjusted to enable exhaust gas to be recirculated to the active cylinders via the inactive cylinders, providing cooled EGR benefits.

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20-02-2014 дата публикации

In-cylinder pressure detecting device of direct injection type internal combustion engine

Номер: US20140048041A1
Принадлежит: Honda Motor Co Ltd, Keihin Corp

An in-cylinder pressure detecting device of a direct injection type internal combustion engine is provided in which a ring-shaped pressure detection element ( 34 ) surrounding a fuel injection hole ( 33 b ) is provided in the vicinity of an extremity of an injector ( 20 ) that injects fuel into a combustion chamber. Since the pressure detection element is provided on the injector, not only is it unnecessary to change the shape or structure of the cylinder head or the combustion chamber in order to provide the pressure detection element, but it is also possible to cool the pressure detection element ( 34 ) by fuel passing through the inside of the injector to thus enhance the precision of pressure detection and the durability. Further, since the ring-shaped pressure detection element ( 34 ) surrounds the periphery of the fuel injection hole ( 33 b ), it is possible to maximize the dimensions of the pressure detection element ( 34 ) to thus further enhance the precision of pressure detection while avoiding interference between the pressure detection element ( 34 ) and fuel injected via the fuel injection hole ( 33 b ).

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10-04-2014 дата публикации

Approach for controlling exhaust gas recirculation

Номер: US20140100760A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Various embodiments related to controlling EGR in an engine are disclosed. In one embodiment, a first EGR amount is supplied to a cylinder at a first temperature and a first engine speed and load. Further, at the first engine speed and load, as engine temperature increases from the first temperature to a second temperature, a first fuel amount is injected after exhaust valve closing and before intake valve opening while a second EGR amount is supplied to the cylinder that is greater than the first EGR amount.

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01-01-2015 дата публикации

Internal combustion engine and working cycle

Номер: US20150000642A1
Автор: Strother John Allan
Принадлежит:

In a reciprocating internal combustion engine operating on a two-stroke cycle, the power stroke is followed by an abbreviated exhaust phase which ends with a portion of the exhaust products retained for recirculation, then by an abbreviated intake phase wherein pressurized new air is introduced, then by an abbreviated compression phase which completes the cycle. Fuel injection and ignition then initiate the next power stroke. Intake and exhaust take place through cylinder-head valves. The combination of a full expansion stroke with an abbreviated compression phase can offer efficiency superior to that of existing engines. Due to flexibility in the amount of pressurized air that can be introduced during intake, and because of the recirculation of relatively large amounts of exhaust gas, cylinder temperatures can be reduced, as can the emission of undesirable exhaust products. 17-. (canceled)8. A two-stroke reciprocating internal combustion engine comprising:one or more cylinders, each cylinder having a wall and being closed at one end by a cylinder head,a piston in each cylinder, each piston being slidably movable in reciprocating movement in the cylinder and sealed at the cylinder wall, whereby each piston and cylinder define an enclosed cylinder volume that decreases in size as the piston moves nearer to the cylinder head and increases in size as the piston moves farther from the cylinder head;a common rotatable crankshaft mechanically connected to the piston in each of the one or more cylinders, whereby rotation of the crankshaft about its axis of rotation and repeating reciprocating movement of the slidable piston in each cylinder in a direction parallel to the axis of its associated cylinder are in direct correspondence to each other,wherein top dead center is defined as the point where the piston is closest to the cylinder head and as an angle of 0° of rotation of the common crankshaft, and wherein bottom dead center is defined as the point where the piston is ...

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06-01-2022 дата публикации

Turbocharger System For A Two-Stroke Engine

Номер: US20220003154A1
Принадлежит:

A turbocharger and method of controlling the same includes a turbine housing comprising an inlet and an outlet, turbine wheel coupled to a shaft. The turbine housing comprising a first scroll and a second scroll for fluidically coupling the inlet and the turbine wheel. The first scroll has a first end adjacent the inlet and a second end adjacent the turbine wheel. The second scroll has a third end adjacent the inlet and a fourth end adjacent the turbine wheel. An exhaust gas diverter valve is coupled to the turbine housing restricting flow into the first scroll or the second scroll. 112-. (canceled)13. A system comprising:a turbocharger comprising a turbine portion and a compressor portion;an engine comprising a throttle body;a boost box;a bypass path coupling the boost box to ambient air outside the boost box;a one way valve coupled in the bypass path communicating air through the one way valve when a first pressure in the boost box is lower than air pressure outside the boost box.14. The system set forth in wherein the bypass path bypasses the compressor portion by providing an alternate air path to the throttle body.15. The system set forth in wherein the bypass path is formed by a duct fluidically coupled to the boost box.16. The system set forth in wherein the duct communicates ambient air to the boost box from an upper plenum.17. The system set forth in wherein the duct communicates ambient air to the boost box from outside the vehicle.18. The system set forth in wherein the duct is formed by an outer wall of a fuel tank.19. The system set forth in wherein the bypass path is disposed on a rearward facing surface of the boost box.2026-. (canceled) This application is a divisional of U.S. patent application Ser. No. 16/691,995, filed Nov. 22, 2019, which claims priority to U.S. Provisional Application No. 62/776,571, filed on Dec. 7, 2018. The above-mentioned patent applications are incorporated herein by reference in its entirety.The present disclosure relates ...

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06-01-2022 дата публикации

Quadruple Acting Scotch Yoke Engine

Номер: US20220003158A1
Автор: Huddleston Sky Moon
Принадлежит:

The present invention relates to a two strokes per cycle Scotch Yoke engine that completes four power strokes per revolution per pair of pistons/cylinders by using both sides of each piston as a combustion chamber. This doubles the power to weight ratio over previous scotch yoke engines and quadruples the power to weight ratio over conventional 4 stroke cycle engines. The present invention is capable of operating in and withstanding the forces of either deflagration (subsonic) and pulse detonation (supersonic) cycles, and is capable of homogeneous charge compression ignition. The present invention can also be an internal/external combustion gas/steam hybrid. The present invention can operate under constant volume or constant pressure cycles as well as most thermal cycles of operation (EG the Otto and Diesel cycle). The present invention works best when using a modified Humphrey cycle to achieve homogeneous charge compression ignition pulse detonation engine using constant volume combustion. 1a first member;a second member; anda third member.. A quadruple acting scotch yolk engine comprising: This application is a non-provisional patent application of provisional patent application No. 63/048,290, filed on Jul. 6, 2020, and priority is claimed thereto.Most conventional engines of the 2 stroke per cycle variety typically rely on the underside of the piston, which in such designs are open to the crankcase, to act as a supercharger to force exhaust gases out of and fresh fuel/air mixture into the combustion chamber when the piston reaches the bottom most portion of its stroke and cycle. Some 2 stroke per cycle engines, especially larger industrial engines, one such example being the Detroit Diesel Series 71, instead rely on a supercharger or turbocharger bolted to the engine to provide this scavenging force rather than pressurizing the crankcase. However, these engines fail to exploit a benefit of relying on an external supercharger and/or turbocharger because they ...

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06-01-2022 дата публикации

Multiple cylinder engine

Номер: US20220003160A1
Принадлежит: Impact Consulting and Engineering LLC

An internal combustion engine may include a first piston reciprocatingly disposed in a first cylinder, a combustion chamber fluidly coupled with the first cylinder, and an ignition source at least partially disposed within the combustion chamber. An intake valve may provide selective fluid communication between an intake system and the combustion chamber, and an exhaust valve may provide selective fluid communication between an exhaust system and the combustion chamber. A second piston may be reciprocatingly disposed within a second cylinder. An inlet associated with the second cylinder may be fluidly coupled with the intake system, and an outlet may be fluidly coupled with one or more of the first cylinder and the combustion chamber. A crankshaft may be coupled with the first piston and the second piston for rotational motion associated with reciprocating movement of the first piston and the second piston.

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05-01-2017 дата публикации

COMBUSTION ENGINE, VEHICLE COMPRISING THE COMBUSTION ENGINE AND METHOD FOR CONTROLLING THE COMBUSTION ENGINE

Номер: US20170002702A1
Принадлежит:

A method to control a four-stroke combustion engine, comprising at least one cylinder; a piston arranged in each cylinder; at least one inlet valve arranged in each cylinder which is connected with an inlet system; at least one first camshaft which controls each inlet valve; at least one exhaust valve arranged in each cylinder which is connected with an exhaust system; at least one second camshaft which controls each exhaust valve; and a crankshaft which controls each camshaft. At least one phase-shifting device is arranged between the crankshaft and the second camshaft, to phase-shift the second camshaft in relation to the crankshaft to a state, where the exhaust valve is controlled in such a way, that it is opened during the expansion stroke of the engine and closed during the exhaust stroke of the engine, to achieve engine braking through compression in the cylinders during the exhaust stroke. 1. A four-stroke combustion engine comprisingat least one cylinder;a piston arranged in each cylinder;at least one inlet valve arranged in each cylinder, which inlet valve is connected with an inlet system;at least one first camshaft which controls each inlet valve;at least one exhaust valve arranged in each cylinder, which exhaust valve is connected with an exhaust system;at least one second camshaft which controls each exhaust valve;a crankshaft which controls each camshaft, andat least one phase-shifting device, arranged between the crankshaft and the at least one second camshaft, in order to phase-shift the at least one second camshaft in relation to the crankshaft, to a state where the at least one exhaust valve is controlled in such a way that it is opened during the engine's expansion stroke and closed during the engine's exhaust stroke, in order to achieve engine-braking via compression in the cylinders during the exhaust stroke, and in that a decompression device is connected to the at least one exhaust valve, which decompression device is arranged to open and ...

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05-01-2017 дата публикации

Engine having integrated exhaust manifold with combined ducts for inside cylinders and outside cylinders

Номер: US20170002716A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

An internal combustion engine has a cooling jacket at least partially integrated in the cylinder head. The engine has two groups of cylinders: inside cylinders and outside cylinders. Each cylinder has at least one exhaust port, each leading to an individual duct. Individual ducts of outside cylinders converge to form an outside combined duct. In a four-cylinder engine or cylinder head, individual ducts of inside cylinders converge to form an inside combined duct with the inside combined duct remaining separated from the outside combined duct by the cooling jacket. The inside combined duct is farther away from the mounting surface of the cylinder head to the cylinder block than the outside combined duct. The cooling jacket includes upper, middle, and lower cooling jackets and connectors between the upper and lower cooling jackets.

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05-01-2017 дата публикации

Integrated oil-less cylinder head engine

Номер: US20170002718A1
Автор: Fillios, SR. Thomas Lee
Принадлежит:

An oil-less engine with an integrated cylinder head is described. Oil-less engine allows manufacturers to build environmentally safer oil-free engines, with fewer engine parts and at reduced costs of manufacturing. In one embodiment, the present invention an internal combustion engine comprising a reciprocating cradle having pistons. The cradle is assembled with a circular disk that rotates. The rotation of the circular disk causes the pistons and the cradle to reciprocate and thereby causing a combustion with cylinder heads. 1. An oil-less internal combustion engine comprising an integrated cylinder head , the engine comprising:(a) an engine casing comprising a cradle;(b) said cradle comprising a plurality of pistons, each piston connected to said cradle by a piston rod;(c) a plurality of cylinder walls corresponding to said plurality of pistons, wherein each cylinder wall comprises an integrated cylinder head, and wherein said each cylinder wall is adapted to hold said each piston;(d) a circular disk assembled in said cradle, wherein said disk is adapted to rotate, and wherein said cradle performs a reciprocation when said disk rotates; and wherein said oil-less engine, in the inside of said engine casing, is free of lubrication,', 'wherein said integrated cylinder head, corresponding to said each cylinder wall, is screwably mountable into said engine casing, said cylinder head comprises:', '(i) an externally-grounded sparking means comprising a positive terminal and a negative terminal;', '(ii) a fuel injecting means;', '(iii) an air injecting means;', '(iv) a valve-less electronic exhaust eliminator;', '(v) a means for cooling said cylinder head, wherein said means for cooling comprises a screw-in air conditioning (AC) module;', 'wherein said sparking means, said fuel injecting means, said air injecting means, said electronic exhaust eliminator, and said means for cooling are fitted together in a screw-type assembly into said cylinder head,', 'wherein said ...

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05-01-2017 дата публикации

ENGINE ARRANGEMENTS WITH EGR SYSTEMS

Номер: US20170002772A1
Принадлежит:

Systems, apparatus, and methods are disclosed that include a divided exhaust engine with at least one pair of primary EGR cylinders and a plurality of pairs of non-primary EGR cylinders. The pair of primary EGR cylinders can be connected to an intake with an EGR system that lacks an EGR cooler. In another embodiment, the cylinder pairs include exhaust flow paths that join in the cylinder head to form a common exhaust outlet for each cylinder pair in the cylinder head that is connected directly to the EGR system or to the exhaust system without an exhaust manifold. 1. A system comprising:an internal combustion engine including at least one pair of primary exhaust gas recirculation (EGR) cylinders connected to a common EGR passage to provide an EGR flow to an intake of the engine and a plurality of pairs of non-primary cylinders with each non-primary cylinder pair connected to a respective one of a plurality of common exhaust passages to provide an exhaust flow to a respective one of a plurality of turbines connected to the respective common exhaust passage.2. The system of wherein the common EGR passage and the common exhaust passages are formed in a cylinder head of the engine.3. The system of claim 1 , wherein each of the plurality of turbines is mounted directly to the cylinder head at an outlet of the respective common exhaust passage claim 1 , and further comprising an EGR cooler mounted to the cylinder head at an outlet of the common EGR passage.4. The system of claim 1 , wherein each of the plurality of turbines includes a compressor in a respective intake conduit to compress an intake air flow.5. The system of claim 4 , wherein the compressed intake air flows from the intake conduits combine at an intake air cooler.6. The system of claim 5 , further comprising an intake passage connecting the intake cooler to the intake and the manifold and the common EGR passage is connected to the intake passage downstream of the intake air cooler.7. The system of claim 6 , ...

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05-01-2017 дата публикации

Internal combustion engine

Номер: US20170002788A1
Принадлежит: MWI MICRO WAVE IGNITION AG

An internal combustion engine including at least one cylinder with a piston moveable therein in an engine block in which microwaves are introduced into a combustion chamber through a microwave window, wherein the combustion chamber is formed by a piston base and a cylinder head, characterized in that the combustion chamber includes a combustion chamber wall which functions as a microwave window at least in portions wherein the combustion chamber wall is made from a wall layer that is made from a ceramic material in which wall layer at least one annular circumferential hollow conductor cavity is arranged with at least one inlet opening for the microwave and which includes at least one outlet opening for the microwave that is run in the annular hollow conductor cavity of the wall layer. In general the invention provides safe ignition of lean fuel air mixtures.

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02-01-2020 дата публикации

CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE

Номер: US20200003135A1
Принадлежит:

The center injection engine is an engine equipped with the direct injector and an ignition apparatus at center of a ceiling part of the combustion chamber. The positive tumble flow flows from the intake port side to the exhaust port side on the ceiling part side of the combustion chamber, and also flows from the exhaust port side to the intake port side on the piston top part side. The ECU calculates the injection timing of the direct injector based on the engine load. In the first injection control, the higher the engine load becomes, the more the end crank angle is retarded. 1. A control system for internal combustion engine comprising:a combustion chamber of an internal combustion engine in which positive tumble flow is generated;an ignition apparatus which is provided substantially at center of a ceiling part of the combustion chamber;a direct injector which is provided adjacent to the ignition apparatus; anda control unit which is configured to control injection timing of the direct injector based on load of the engine,wherein the control unit is further configured to:control the injection timing to a crank angle section corresponding to intake stroke of the engine in a low-load region of the engine; andcontrol at least end crank angle of the injection timing in a high-load region of the engine on a retard side as compared to that of the injection timing in the low-load region,wherein the end crank angle of the injection timing in the high-load region is within a crank angle section corresponding to a first half of compression stroke of the engine.2. The control system according to claim 1 , further comprising:a fuel tubing which is configured to provide the direct injector with fuel in compressed state,wherein the control unit is further configured to control fuel pressure in the fuel tubing based on the engine load when the engine load is in the high-load region,wherein the fuel pressure decreases as the engine load increases.3. The control system according ...

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07-01-2021 дата публикации

EXHAUST VALVE ASSEMBLY FOR A TWO-STROKE INTERNAL COMBUSTION ENGINE

Номер: US20210003052A1
Принадлежит:

A two-stroke internal combustion engine has a crankshaft disposed at least in part in a crankcase, and a cylinder block connected to the crankcase and defining a cylinder. The cylinder defines at least one exhaust port for discharging exhaust fluid. A piston is movably disposed within the cylinder and is operatively connected to the crankshaft. The piston is movable along a cylinder axis in a reciprocating motion including an upstroke and a downstroke. An exhaust valve assembly is operatively connected to and rotates with the crankshaft. The exhaust valve assembly has a shaft rotatably supported by the cylinder block and a valve configured to cyclically obstruct the exhaust port. The valve is operable to move clear of the exhaust port before the piston uncovers the exhaust port during its downstroke, and at least partially close the exhaust port before the piston fully covers the exhaust port during its upstroke. 1. A two-stroke internal combustion engine comprising:a crankcase;a crankshaft disposed at least in part in the crankcase;a cylinder block connected to the crankcase;a cylinder defined in the cylinder block and having a cylinder axis, the cylinder defining at least one exhaust port for discharging exhaust fluid from the cylinder;a piston movably disposed within the cylinder and being operatively connected to the crankshaft, the piston being movable along the cylinder axis in a reciprocating motion including an upstroke and a downstroke; a shaft rotatably supported by the cylinder block and extending along a central axis, the shaft being discontinuous;', move clear of the exhaust port before the piston uncovers the exhaust port during the downstroke of the piston, and', 'at least partially close the exhaust port before the piston fully covers the exhaust port during the upstroke of the piston., 'a valve connected to the shaft and configured to cyclically obstruct the exhaust port, the valve being disposed between a first portion and a second portion of the ...

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07-01-2021 дата публикации

ENGINE CONFIGURATION

Номер: US20210003069A1
Автор: DE JONG Dirk-Jan
Принадлежит: DAF Trucks N.V.

According to the invention, a method is provided of operating a combustion engine comprising more than three cylinders with cylinder valves that are operated in a cycle of fuel intake, pressurizing, firing and exhaust strokes. The method comprises carrying out the cycle for at least two cylinders in a simultaneous operation; and having the simultaneously operated cylinders to exhaust in a manifold that couples to a single turbine. 1. A method of operating a combustion engine comprising more than three cylinders with cylinder valves that are operated in a stroke cycle of fuel intake , pressurizing , firing and exhaust strokes , the method comprising carrying out the cycle for at least two cylinders in simultaneous firing; and having the simultaneously fired cylinders to exhaust in a single manifold that couples to a single turbine with a single inlet.2. A method according to claim 1 , wherein the combustion engine is a six cylinder inline combustion engine.3. A method according to claim 1 , wherein only the cylinders of the combustion engine are operated simultaneously that have cylinder pistons sharing a same mechanical orientation relative to the crankshaft.4. A method according to claim 1 , wherein the combustion engine comprises six cylinders that are operated in a fashion that simultaneously operates the first and sixth cylinder claim 1 , the fifth and second cylinder and the third and fourth cylinder claim 1 , said cylinders numbered in consecutive order.5. A method according to claim 1 , wherein the cylinder valves are operated by a cam shaft claim 1 , that has three cam positions for opening and closing of the exhaust valve.6. A method according to claim 1 , wherein the cylinder valves are actuated hydraulically or electrically.7. A combustion engine comprising more than three cylinders with cylinder valves that are operated in a cycle of fuel intake claim 1 , pressurizing claim 1 , firing and exhaust strokes claim 1 , having a valve control system arranged ...

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07-01-2021 дата публикации

DOUBLE-CYLINDER INTERNAL COMBUSTION ENGINE

Номер: US20210003070A1
Принадлежит:

The present invention relates to internal combustion engines, and discloses a double-cylinder internal combustion engine. The double-cylinder internal combustion engine of the present invention adopts a curved groove ball bearing mechanism to replace crank-connecting rod mechanisms since traditional internal combustion engines have a complicated structure, high material requirements, high processing difficulty, and the inertia effect and noises thereof are hard to be eliminated. Two inner rings of the curved groove ball bearing mechanism are fixedly connected, and a valve mechanism and an ignition mechanism are driven through a gear pair, so that the two sets of cylinders and pistons reciprocate in opposite directions to automatically balance reciprocating inertia thereof. Compared with the prior art, the present invention has simple motion forms which only consist of the rotary motion and the reciprocating motion, and low noises are produced. The inertia of the reciprocating motion is automatically offset, causing small vibrations.

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07-01-2021 дата публикации

PROCESS FOR OPERATING A SINGLE-STROKE COMBUSTION ENGINE

Номер: US20210003121A1
Автор: Gamble Christopher L.
Принадлежит: KISS-Engineering Inc.

The present invention is directed to a process for operating a combustion engine having a double-sided piston in a piston cylinder, wherein every stroke of the double-sided piston is a power stroke. Every piston cylinder defines a combustion chamber on each side of the double-sided piston. The process includes igniting a fuel-air mixture in each combustion chamber on each side of double-sided piston during every compression, i.e., at about top dead center and at about bottom dead center. The process utilizes the double-sided piston to achieve two power strokes per piston for each engine cycle. 1. A process for operating a combustion engine , comprising the steps of:providing a combustion engine having a primary cylinder enclosing a double-sided piston and defining a first combustion chamber and a second combustion chamber on opposite sides of the double-sided piston, wherein the double-sided piston reciprocates between top dead center in the first combustion chamber and bottom dead center in the second combustion chamber relative to a crankshaft;igniting a first fuel-air mixture in the first combustion chamber every time the double-sided piston is about at top dead center; andigniting a second fuel-air mixture in the second combustion chamber every time the double-sided piston is about at bottom dead center.2. The process of claim 1 , wherein the step of igniting the first fuel-air mixture pushes the double-sided piston in a downward direction toward bottom dead center in the second combustion chamber.3. The process of claim 2 , wherein the step of igniting the second fuel-air mixture pushes the double-sided piston in an upward direction toward top dead center in the first combustion chamber.4. The process of claim 3 , wherein the step of igniting the first fuel-air mixture produces combustion gases in the first combustion chamber claim 3 , further comprising the step of:exhausting the combustion gases through an exhaust port intermediate the first combustion ...

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03-01-2019 дата публикации

EXHAUST VALVE ASSEMBLY FOR A TWO-STROKE INTERNAL COMBUSTION ENGINE AND METHOD FOR CLEANING SAME

Номер: US20190003350A1
Принадлежит:

A method for cleaning an exhaust valve of a two-stroke internal combustion engine is provided. The method comprises: requesting an exhaust valve cleaning cycle if at least one of a first condition or a second condition is satisfied; initiating the exhaust valve cleaning cycle if at least one of a third condition or a fourth condition is satisfied; and aborting the exhaust valve cleaning cycle if at least one of the at least one of the third or fourth conditions is no longer satisfied. The first condition is a time elapsed since a previous cleaning cycle has been completed being greater than a predetermined time. The second condition is a rate of opening of the exhaust valve being less than predetermined rate. The third condition is a throttle valve being closed. The fourth condition is an engine speed being less than a predetermined engine speed. 1. A method for cleaning an exhaust valve of a two-stroke internal combustion engine comprising:requesting an exhaust valve cleaning cycle if at least one of a first condition or a second condition is satisfied;initiating the exhaust valve cleaning cycle if at least one of a third condition or a fourth condition is satisfied; andaborting the exhaust valve cleaning cycle if at least one of the at least one of the third or fourth conditions is no longer satisfied;the first condition being a time elapsed since a previous cleaning cycle has been completed being greater than a predetermined time;the second condition being a rate of opening of the exhaust valve being less than predetermined rate;the third condition being a throttle valve being closed; andthe fourth condition being an engine speed being less than a predetermined engine speed.2. The method of claim 1 , wherein requesting the exhaust valve cleaning cycle if at least one of the first or the second conditions is satisfied includes:requesting the exhaust valve cleaning cycle if both of the first and the second conditions are satisfied.3. The method of claim 1 , wherein ...

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03-01-2019 дата публикации

BLOW-BY GAS RETURN DEVICE

Номер: US20190003357A1
Принадлежит:

A blow-by gas return device includes: a gas path which is configured to introduce a blow-by gas generated in a crankcase into an intake system through an inside of a head cover, a pressure control valve and a blow-by pipe; and an orifice provided to the gas path, the orifice mounted on a wall portion of an intake manifold on a cylinder head side. A passage for a blow-by gas is formed in the wall portion on the cylinder head side, and the orifice is formed on a joint pipe mounted on the passage for the blow-by gas for communicably connecting the blow-by pipe with the passage for the blow-by gas. 1. A blow-by gas return device comprising:a gas path which is configured to introduce a blow-by gas generated in a crankcase into an intake system through an inside of a head cover, a pressure control valve and a blow-by pipe; andan orifice provided to the blow-by pipe, the orifice mounted on a wall portion of an intake manifold on a cylinder head side.2. The blow-by gas return device according to claim 1 , wherein a passage for the blow-by gas is formed in the wall portion on the cylinder head side claim 1 , and the orifice is formed on a joint pipe mounted on the passage for the blow-by gas for communicably connecting the blow-by pipe with the passage for the blow-by gas.3. The blow-by gas return device according to claim 1 , wherein the wall portion on the cylinder head side has a mounting flange to be fixed to a cylinder head by a bolt.4. The blow-by gas return device according to claim 2 , wherein the wall portion on the cylinder head side has a mounting flange to be fixed to a cylinder head by a bolt.5. The blow-by gas return device according to claim 1 , wherein the intake system to which the blow-by gas is introduced forms the intake manifold claim 1 , and the intake system is mounted on a portion of the intake manifold on a side opposite to the cylinder head side.6. The blow-by gas return device according to claim 2 , wherein the intake system to which the blow-by ...

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03-01-2019 дата публикации

MULTIPLE VALVE CYLINDER HEAD

Номер: US20190003417A1
Автор: Gamble Matthew
Принадлежит: Edelbrock, LLC

A cylinder head comprising a single intake valve and at least two exhaust valves per cylinder. The two or more exhaust valves may provide additional curtain area and total cross sectional area for the exhaust flow and better performance for engines equipped with a cylinder head in accordance with the present disclosure. 1. A cylinder head , comprising: a single intake valve having an intake diameter;', 'a first exhaust valve having a first diameter; and', 'a second exhaust valve having a second diameter, in which the first diameter and the second diameter are each less than the intake diameter., 'at least one cylinder, in which the at least one cylinder comprises2. The cylinder head of claim 1 , in which the at least one cylinder further comprises an access point claim 1 , between the intake valve claim 1 , the first exhaust valve and the second exhaust valve.3. The cylinder head of claim 2 , wherein the access point provides access to the cylinder for a spark plug or fuel injector.4. The cylinder head of claim 3 , wherein the first diameter is equal to the second diameter.5. The cylinder head of claim 3 , wherein the single intake valve is the one and only one intake valve for one of the at least one cylinders.6. An internal combustion engine claim 3 , comprising: a single intake valve having an intake diameter,', 'a first exhaust valve having a first diameter, and', 'a second exhaust valve having a second diameter, in which the first diameter and the second diameter are each less than the intake diameter., 'a cylinder head, having at least one cylinder, in which the at least one cylinder includes7. The internal combustion engine of claim 6 , in which the at least one cylinder further comprises an access point claim 6 , between the intake valve claim 6 , the first exhaust valve and the second exhaust valve.8. The internal combustion engine of claim 7 , wherein the access point provides access to the cylinder for a spark plug or fuel injector.9. The internal ...

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08-01-2015 дата публикации

Hybrid Cycle Combustion Engine and Methods

Номер: US20150007793A1
Принадлежит: Liquidpiston Inc

A method of operating an internal combustion engine having a housing with a recess, and a piston rotatably mounted in the housing, wherein the housing and the piston form, over the course of shaft rotation, initial, second and third volumes in differing amounts for the phases of compression, combustion and expansion, in a manner that is smooth and continuous, which method includes (a) compressing air into a chamber formed by the recess and the piston, (b) introducing fuel into the chamber of compressed air, and (c) igniting the mixture of compressed air and fuel.

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12-01-2017 дата публикации

SLEEVE VALVE ENGINE

Номер: US20170009617A1
Автор: Ellis Paul
Принадлежит:

An engine comprises at least one cylinder, at least one piston reciprocatable within the at least one cylinder, at least one intake port through a wall of the at least one cylinder, at least one exhaust port through a wall of the at least one cylinder, at least one reciprocatable sleeve valve within the at least one cylinder for controlling porting of one or both of the at least one intake port and the at least one exhaust port, at least one shaft configured to be rotated by reciprocal motion of the at least one piston, a piston drive means coupled to and reciprocatable with the least one piston and a sleeve valve drive means coupled to and reciprocatable with the at least one reciprocatable sleeve valve. An axis of reciprocation the sleeve valve drive means is spaced from and parallel to an axis of reciprocation of the piston drive means of the at least one piston and the axis of reciprocation the sleeve valve drive means is positioned around the circumference of the shaft from the axis of reciprocation of the piston drive means of the at least one piston. This may allow the engine to be more compact and have a reduced physical size compared to some known engines. 1. An engine comprising:at least one cylinder;at least one piston reciprocatable within the at least one cylinder;at least one intake port through a wall of the at least one cylinder;at least one exhaust port through a wall of the at least one cylinder;at least one reciprocatable sleeve valve within the at least one cylinder for controlling porting of one or both of the at least one intake port and the at least one exhaust port;at least one shaft rotatable by reciprocal motion of the at least one piston;a piston drive means coupled to and reciprocatable with the least one piston;a sleeve valve drive means coupled to and reciprocatable with the at least one reciprocatable sleeve valve;wherein an axis of reciprocation the sleeve valve drive means is positioned around the circumference of the at least one ...

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12-01-2017 дата публикации

MODULARIZED MULTIFUNCTIONAL VARIABLE VALVE ACTUATION SYSTEM FOR USE IN 6-CYLINDER INTERNAL COMBUSTION ENGINE

Номер: US20170009618A1
Принадлежит:

A modularized multifunctional variable valve actuation system for use in a six-cylinder internal combustion engine. The system mainly comprises fuel supply modules ( and ), a phase limiting module (), a mode selection module (), control modules ( and ), a fuel transfer module (), and a valve actuation module (). The phase limiting module (), with an extremely simple structure, implements a valve closing process not limited by operational phases of the fuel supply modules ( and ), and at the same time, requires only two fuel supply modules ( and ) and two two-way two-position valves (, and ) to implement a continuously variable valve event, and requires only two fuel supply modules ( and ), two three-way two-position valves (, and ), and one two-way two-position valve (, and ) to implement a fully variable valve event, thus greatly reducing costs. The mode selection module () implements flexible conversion of an actuation mode and a braking mode of an internal combustion engine. Components of the system are functionally independent, modules are selected on the basis of requirements such as a gas distribution mode, the flexibility of valve operations, and the presence or absence of the braking mode, and the need for altering other modules is obviated. Thus, the system has a great suitability and a wide range of applications. 2. The system of claim 1 , wherein{'b': 3', '3', '3', '3', '3', '2', '22', '22', '3', '2', '22', '22', '3', '2', '22', '22, 'i': k', 'm', 'n', 'k', 'e', 'a', 'g', 'm', 'g', 'c', 'i', 'n', 'i', 'e', 'k, 'for the fully variable valve actuation system of the continuously variable or independent oil drain valve on the valve side, the first control module () further comprises a fifth drive port of the first control module (), a sixth drive port of the first control module () and a seventh drive port of the first control module (); the fifth drive port of the first control module () is connected to the oil path between the first oil drain port of the ...

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12-01-2017 дата публикации

A four-stroke internal combustion engine with variable compression ratio

Номер: US20170009648A1
Принадлежит:

A four-stroke internal combustion engine with variable compression ratio, comprises a crankcase, a crankshaft, a connecting rod having a big end and a small end. A piston is rotatably connected to the small end. A crank member rotatably mounted on the crankpin has a bearing portion which is eccentrically disposed with respect to the crankpin, wherein the bearing portion has an outer circumferential wall including a location of maximum eccentricity (P) which bears the big end of the connecting rod such that the connecting rod is rotatably mounted on the bearing portion of the crank member via the big end. Under operating conditions at or close to top dead center of the piston the angle between the connecting rod plane and the piston plane changes from a pre-angle before top dead center to a post-angle after top dead center. 1. A four-stroke internal combustion engine with variable compression ratio , comprising:a crankcase;a crankshaft being rotatable with respect to the crankcase about a crankshaft axis, wherein the crankshaft has a crankpin including a crankpin axis;a connecting rod including a big end and a small end, wherein the connecting rod has a center line which lies in a connecting rod plane;a piston being rotatably connected to the small end, wherein the piston is movable in a direction parallel to a piston plane in which the crankshaft axis lies;a crank member being rotatably mounted on the crankpin, and comprising a bearing portion which is eccentrically disposed with respect to the crankpin, wherein the bearing portion has an outer circumferential wall including a location of maximum eccentricity (P) which bears the big end of the connecting rod such that the connecting rod is rotatably mounted on the bearing portion of the crank member via the big end, wherein the bearing portion has a center line which lies in the connecting rod plane, wherein under operating conditions at or close to top dead center of the piston the angle between the connecting rod ...

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12-01-2017 дата публикации

MOMENT-CANCELLING 4-STROKE ENGINE SYSTEMS

Номер: US20170009649A1
Автор: Gurney Daniel Sexton
Принадлежит:

A moment-cancelling, four-stroke engine is disclosed. The engine includes a first cylinder having a first piston and a second cylinder having a second piston, a first crankshaft operably connected to the first piston and a second crankshaft operably connected to the second piston. The first crankshaft rotates in a first direction and the second crankshaft rotates in a second direction that is opposite the first direction to cancel the moments applied to the engine and reduce engine vibration. 1. An internal combustion engine , comprising:a first cylinder having a first piston;a second cylinder having a second piston;a first crankshaft operably connected to the first piston;a second crankshaft operably connected to the second piston;a cylinder head comprising at least one intake port and at least one exhaust port per cylinder, said at least one intake port connected to the first cylinder such that fluid can pass through the at least one intake port into the first cylinder and said at least one exhaust port connected to the first cylinder such that fluid can pass from the first cylinder through the at least one exhaust port;a movable intake valve positioned at least partially within the at least one intake port configured to control the flow of fluid through the at least one intake port, the at least one intake port having a minimum intake port diameter;a movable exhaust valve positioned at least partially within the at least one exhaust port configured to control the flow of fluid through the at least one exhaust port;a first fuel injector configured to provide gaseous or liquid fuel directly to the first cylinder;a second fuel injector configured to provide gaseous or liquid fuel directly to the second cylinder;wherein the first crankshaft rotates in a first direction and the second crankshaft rotates in a second direction such that the second direction is an opposite direction from the first direction.2. The engine of claim 1 , wherein the engine is water-cooled.3. ...

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12-01-2017 дата публикации

Device for damping torsional oscillations

Номер: US20170009844A1
Автор: Roel Verhoog
Принадлежит: Valeo Embrayages SAS

A device for damping torsional oscillations comprises a support rotatable around an axis. At least one pendulum body is movable with respect to the support. At least one bearing member interacts with at least one raceway integral with the support and with at least one raceway integral with the pendulum body. The bearing member rolls along each raceway around an inactive raceway position. The first region is shaped to filter a first order value of the torsional oscillations by the pendulum body when the bearing member rolls along that first region. Two second regions are beyond an end of the first region. Each second region is shaped to filter a second order value of the torsional oscillations by the pendulum body when the bearing member rolls along one of those second regions. The second order value is strictly lower than the first order value.

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12-01-2017 дата публикации

MULTI-STAGE COMBUSTION HOT-GAS/STEAM PRESSURE-DIFFERENTIAL PARALLEL-CYLINDER OPPOSED-PISTON ENGINE FOR NATURAL GAS, HYDROGEN AND OTHER FUELS WITH INTEGRATED ELECTRIC GENERATOR

Номер: US20170009884A1
Автор: Muckenhirn Ralf
Принадлежит:

A five-spindle engine system having a stable center of gravity that operates without oil lubrication. an opposed-piston four-cylinder, two-stroke combustion engine, a double-acting opposed-piston pressure-gradient drive, a multi-rotor/multi-stator/multi-phase disk generator/disk motor including windings printed on printed circuit boards, and/or a heat pump may be integrated in the systemt and housed in a common sealed housing. 1. A five-spindle engine system having a stable center of gravity that operates without oil lubrication , comprising:four rocking spindles, respectively offset by 90 degrees, arranged around a central rotary spindle, two opposing ones of said rocking spindles in each case control movements of four opposed pistons respectively, operating oppositely in pairs, in two parallel-arranged cylinders by way of a rocker, or take up motive energy generated in the opposed pistons to coordinate said motive energy by way of the respective rocking spindles with further drive cylinders, and transmit said motive energy by way of one or more radial connecting rods by way of a central eccentric connected to the rotary spindle to the central rotary spindle, and at the same time, by way of the eccentric, coordinate movement of the two rocking spindles with the other two of the rocking spindles that are turned by 90 degrees and arranged opposite one another.2. The engine system of claim 1 , wherein the radial connecting rods have one fixed and three movable connecting-rod arms.3. The engine system of claim 1 , further comprising a pressure-resistant claim 1 , sealed housing which completely encloses the system and by said housing separates the system for operation in an atmosphere that is isolated from surroundings in terms of pressure and the gas composition claim 1 , and all motor- and generator-related processes take place in an environment within the sealed housing4. The engine system of claim 1 , further comprising an opposed-piston four-cylinder claim 1 , two ...

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27-01-2022 дата публикации

CARBURETOR AND TWO-STROKE ENGINE WITH A CARBURETOR

Номер: US20220025837A1
Принадлежит:

A carburetor has a carburetor body wherein an intake channel is formed. A throttle flap is pivotably mounted by a throttle shaft in the carburetor body for controlling the free flow cross-section of the intake channel. The intake channel has a first longitudinal center axis in the region of the throttle shaft. The throttle flap has first and second end positions, wherein the throttle flap opens a larger flow cross-section of the intake channel in the second end position than in the first end position. A partition wall section, on which the throttle flap lies in the second end position, is arranged upstream of the throttle shaft. A choke flap is upstream of the partition wall section and is pivotable between first and second end positions. In their second end positions, the throttle flap and the choke flap overlap in the direction of the first longitudinal center axis. 1. A carburetor comprising:a carburetor body having an intake channel formed therein;said intake channel defining a free flow cross section;a throttle flap having a throttle shaft and being pivotally mounted in said carburetor body for controlling said free flow cross section of said intake channel;said intake channel defining a first longitudinal center axis in the region of said throttle shaft;said throttle flap having a first end position and a second end position wherein said throttle flap enables a larger flow cross section of said intake channel than in said first end position;a partition wall section mounted in said intake channel upstream of said throttle shaft;said partition wall section being configured to partition said intake channel into a mixture channel section and an air channel section;said throttle flap being configured to lie on said partition wall section when in said second end position thereof;a choke flap mounted in said intake channel upstream of said partition wall section so as to be pivotal between a first end position and a second end position wherein said choke flap enables ...

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14-01-2016 дата публикации

System and Method for Cleaning Air Induction Path of Internal Combustion Engine

Номер: US20160010547A1
Принадлежит:

A system and method for cleaning deposits, such as carbon build-up, from an air induction path of a motor vehicle engine. A reservoir mounted onboard the vehicle is in fluid communication with the induction path and contains a cleaning solution. A control module activates a valve to meters a flow of the solution into an air intake plenum in response to a signal indicating a parameter related to operation of the engine. The solvent may be delivered in a quantity calculated to collect at sump of the intake plenum and be drawn into the engine when intake air flow exceeds a threshold rate. The engine-related parameter may be distance travelled by the vehicle. 1. A system for cleaning an air induction path of a motor vehicle engine comprising:a reservoir mounted onboard the vehicle, in fluid communication with the induction path, and containing a solvent;a valve metering flow of the solvent into the induction path; and a) receiving a signal indicating a parameter related to operation of the engine; and', 'b) based on the signal, activating the valve to deliver solvent into the induction path., 'a control module'}2. The system of wherein the solvent is delivered into an intake plenum of the engine.3. The system of wherein the solvent is delivered in a quantity calculated to collect at a low point of the intake plenum and be drawn into the engine when intake air flow exceeds a threshold rate.4. The system of wherein the low point is a sump for collecting condensate.5. The system of wherein the reservoir is mounted in an engine compartment of the vehicle.6. The system of wherein the control module controls multiple powertrain functions.7. The system of wherein the parameter related to operation of the engine is distance travelled by the vehicle.8. Apparatus for a motor vehicle comprising:an internal combustion engine;an air intake plenum;a reservoir mounted onboard the vehicle, in fluid communication with the plenum, and containing a solvent;a valve metering flow of the ...

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14-01-2021 дата публикации

ENGINE PHASE DETERMINATION AND CONTROL

Номер: US20210010449A1
Принадлежит:

In at least some implementations, a method of controlling spark events in an engine includes determining for at least two engine revolutions in a four-stroke engine at least one characteristic of the primary coil voltage for a spark event, determining, based upon the characteristic of the primary coil voltage, which of the spark events is associated with a compression phase and which of the spark events is associated with an exhaust phase of engine operation, and providing spark events in subsequent engine revolutions that are associated with the compression phase of engine operation but not in revolutions associated with the exhaust phase of engine operation. In at least some implementations, the characteristic is the duration of the spark event as determined by changes in the primary coil voltage, and the characteristic may be that the duration that the primary coil voltage is above a threshold voltage. 1. A method of controlling spark events in a combustion engine , comprising:determining for at least two engine revolutions in a four-stroke engine at least one characteristic of the primary coil voltage for a spark event;determining, based upon the characteristic of the primary coil voltage, which of the spark events is associated with a compression phase of engine operation and which of the spark events is associated with an exhaust phase of engine operation; andproviding spark events in subsequent engine revolutions that are associated with the compression phase of engine operation but not in revolutions associated with the exhaust phase of engine operation.2. The method of wherein the characteristic is the duration of the spark event as determined by changes in the primary coil voltage.3. The method of wherein the characteristic is the duration that the primary coil voltage is above a threshold voltage.4. (canceled)5. A method of providing fuel to a multi-cylinder engine from a single control valve claim 1 , comprising:determining the intake phase of engine ...

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09-01-2020 дата публикации

INTERNAL COMBUSTION ENGINE

Номер: US20200011235A1
Принадлежит:

An internal combustion engine includes a reduction gear including: at one end thereof, a small-diameter gear in mesh with a one-way clutch gear; and at an opposite end thereof, a large-diameter gear in mesh with a drive gear of a starter motor. The starter motor has a driveshaft disposed below a rotation axis of the reduction gear and within a width of the large-diameter gear as viewed in an axial direction. Accordingly, in the internal combustion engine, it is possible to efficiently dispose components in a reentrant space formed between a crankcase and a cylinder block. 1. An internal combustion engine comprising:a crankcase supporting a crankshaft rotatably about a rotation axis of the crankshaft, the crankcase accommodating therein a multi-speed transmission;a cylinder block joined to the crankcase, and having a cylinder axis that is located in a vertical plane orthogonal to the rotation axis and rises relative to a horizontal plane;a main shaft incorporated in the multi-speed transmission and rotatably supported on the crankcase, the main shaft coaxially supporting thereon a primary driven gear, which is in mesh with a primary drive gear of the crankshaft, and a one-way clutch gear; anda reduction gear including, at one end thereof, a small-diameter gear in mesh with the one-way clutch gear and at an opposite end thereof, a large-diameter gear in mesh with a drive gear of a starter motor),wherein the starter motor has a driveshaft disposed below a rotation axis of the reduction gear and within a width of the large-diameter gear as viewed in an axial direction.2. The internal combustion engine according to claim 1 , wherein the driveshaft has an axis disposed within a width of the small-diameter gear as viewed in the axial direction.3. The internal combustion engine according to claim 1 , further comprising:a clutch connected to the primary driven gear on the main shaft and switching between transmission and non-transmission of a driving force of the crankshaft, ...

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09-01-2020 дата публикации

ENGINE

Номер: US20200011269A1
Принадлежит:

An engine includes: a crankcase; a cover that is connected to the crankcase at a mating surface of the cover inclined toward an inner side in a vehicle width direction in going downward when the engine is mounted to a vehicle body, the cover covering a protruding end of a rotary shaft; and attachment bosses that are formed to be integral with the cover, have a predetermined height from the mating surface, and accept fastening members for fastening the cover to the crankcase. Accordingly, when mounted on a two-wheeled motor vehicle, the engine can restrain protrusion in the vehicle width direction and can be disposed at a position as low as possible with reference to the vehicle. 1. An engine comprising:a crankcase;a rotary shaft that is rotatably supported on the crankcase, the rotary shaft having a protruding end thereof protruding to outside from the crankcase;a cover that is connected to the crankcase at a mating surface of the cover inclined toward an inner side in a vehicle width direction in going downward when the engine is mounted to a vehicle body, the cover covering the protruding end of the rotary shaft; andattachment bosses that are formed to be integral with the cover, have a predetermined height from the mating surface, and accept fastening members for fastening the cover to the crankcase.2. The engine according to claim 1 , whereinthe rotary shaft is a crankshaft, andthe cover is a power transmission mechanism cover covering a power transmission mechanism that is fixed to the crankshaft on outside of the crankcase, the power transmission mechanism transmitting power from the crankshaft to a camshaft.3. The engine according to claim 1 , whereinthe rotary shaft is a crankshaft, andthe cover is a generator cover covering a generator that is connected to the crankshaft on outside of the crankcase.4. The engine according to claim 3 , whereina to-be-detected body has reluctors arranged in an annular pattern coaxially with the crankshaft and detected by a ...

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09-01-2020 дата публикации

Internal combustion engine

Номер: US20200011397A1
Принадлежит: Liebherr Components Colmar SAS

The present invention provides an internal combustion engine comprising a crankshaft, the crankshaft comprising main bearing journals and cranks for connecting the crankshaft to piston rods of the engine, wherein the crankshaft is provided with counterweights, wherein at least a first counterweight is formed as a separate element and connected to the crankshaft. The present invention is characterized in that at least a second counterweight is formed integrally with the crankshaft.

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03-02-2022 дата публикации

TWO-STROKE ENGINE WITH SUPERCHARGER

Номер: US20220034265A1
Автор: YAMAGATA Naoyuki
Принадлежит: MAZDA MOTOR CORPORATION

A two-stroke engine with a supercharger is provided that can prevent occurrence of abnormal combustion under high load and can improve fuel efficiency when compression self-ignition combustion is carried out under low load, and spark ignition combustion is carried out under high load. When an operation state of an engine body is in a high-load side operation range, an intake variable valve mechanism and an exhaust variable valve mechanism are actuated to retard at least closing timing of an intake valve and at least opening timing of an exhaust valve from those in the case where the operation state of the engine body is in a low-load side operation range at the same engine speed as the engine speed detected by engine speed detection means while particular conditions are satisfied. 1. A two-stroke engine with a supercharger , the two-stroke engine including: an engine body that has a cylinder constituting a combustion chamber , a piston inserted in and fitted to said cylinder , and an intake valve and an exhaust valve arranged on top of the cylinder and respectively opening/closing an intake port and an exhaust port; and a supercharger that is provided in an intake passage connected to the intake port of said engine body , the two-stroke engine with the supercharger further comprising:an intake variable valve mechanism capable of varying at least closing timing of the intake valve;an exhaust variable valve mechanism capable of varying at least opening timing of the exhaust valve;engine speed detection means that detects an engine speed as a speed of the engine body; andcontrol means that controls actuation of the engine body including the intake variable valve mechanism and the exhaust variable valve mechanism,wherein an open period of each of the intake valve and the exhaust valve is set to satisfy particular conditions that are that the open period includes compression bottom dead center, that the opening timing of the intake valve is later than the opening timing ...

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19-01-2017 дата публикации

Internal Combustion Engine with Integrated Air Compressor

Номер: US20170016387A1
Автор: CANNATA Antonio
Принадлежит:

A piston-cylinder arrangement for an internal combustion engine includes a first cylinder bore in an engine with a first piston disposed therein. A combustion chamber may be positioned between walls of the first cylinder bore and the first piston. A second cylinder bore in the engine block may be aligned with the first cylinder bore with a second piston disposed therein. A compression chamber may be positioned between walls of the second cylinder bore and the second piston. One or more supporting members may connect the first piston to the second piston for facilitating concurrent reciprocation of the first piston and the second piston within their respective cylinder bores during operation of the internal combustion engine. The first piston, the second piston, and the one or more supporting members may define a stacked piston arrangement. 1. A piston-cylinder arrangement for an internal combustion engine , the arrangement comprising:a first cylinder bore in an engine block, the first cylinder bore having an axis extending along a length of the first cylinder bore;a first piston positioned within the first cylinder bore for reciprocation along the axis;a combustion chamber positioned between walls of the first cylinder bore and the first piston;an inlet for directing intake contents into the combustion chamber;an outlet for directing exhaust contents of the combustion chamber out of the combustion chamber;a second cylinder bore in the engine block, the second cylinder bore aligned with the first cylinder bore along the axis;a second piston positioned within the second cylinder bore for reciprocation along the axis;a compression chamber positioned between walls of the second cylinder bore and the second piston;one or more ports in the engine block for directing air into and out of the compression chamber; andone or more supporting members connecting the first piston to the second piston, the one or more supporting members positioning the first piston and the second ...

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19-01-2017 дата публикации

PORTABLE WORK APPARATUS

Номер: US20170016450A1
Принадлежит:

A portable work apparatus has a drive motor and a housing which is formed at least partially by a housing part. The work apparatus has an operating fluid tank which is formed separately from the housing part and which has a cavity for receiving operating fluid. The operating fluid tank has a first portion which is arranged in a receptacle of the housing part, and a second portion which at least partially delimits the cavity and which protrudes from the receptacle. Provision is made for the operating fluid tank to be fixed to the housing part by at least one fastener, and for the receptacle to be delimited at least partially by a plurality of ribs of the housing part that are arranged at a spacing (f) from one another. 1. A portable work apparatus comprising:a drive motor;a housing part;a housing at least partially formed by said housing part;an operating fluid tank formed separately from said housing part;said operating fluid tank defining a cavity configured to accommodate operating fluid;said housing part including a receptacle;said operating fluid tank having a first section arranged in said receptacle of said housing part;said operating fluid tank further having a second section projecting out of said receptacle and at least partially delimiting said cavity;at least one fastener configured to fix said operating fluid tank to said housing part;said housing part having a plurality of ribs mutually arranged at a distance (f) to each other; and,said plurality of ribs at least partially delimiting said receptacle.2. The portable work apparatus of claim 1 , wherein said second section includes a filler neck.3. The portable work apparatus of claim 1 , wherein:said operating fluid tank defines a circumferential direction and a circumferential range (e);each of said ribs has an individual measured width (c); and,the sum of said individual measured widths (c) is less than 50% of said circumferential range (e).4. The portable work apparatus of claim 1 , wherein:said ...

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18-01-2018 дата публикации

SEALING UNIT AND FLUID ENGINE

Номер: US20180016952A1
Принадлежит:

A valve stem sealing unit () for forming a seal round a valve stem () of a poppet valve () in an engine () having a body () and operated by a working fluid, the valve stem sealing unit () including: a housing () defining a through passage () running from a first end to a second end, the through passage () being arranged to receive a portion of the valve stem (); a first seal () arranged to form a seal between the valve stem () and the housing () to prevent egress of the working fluid from the first end of the housing (); and a second seal () arranged to form a seal between the housing () and a body () of the engine () to prevent egress of the working fluid from the second end of the housing (). 115-. (canceled)15. A fluid engine arranged to be driven by a change in pressure of a working fluid , the fluid engine having one or more possible leakage points , and including a working fluid collecting system , to collect any working fluid that leaks from the leakage points , the working fluid collecting system including:a cover constructed and arranged to form a sealed space around at least one of the leakage points;means for condensing working fluid leaking into the cover; andmeans for collecting the condensed working fluid.16. The fluid engine of claim 15 , wherein the means for condensing the working fluid includes a heat exchange fluid at lower temperature than the working fluid claim 15 , such that heat exchange between the working fluid and heat exchange fluid cools the working fluid.17. The fluid engine of claim 16 , wherein the means for condensing the working fluid includes a heat exchanger for exchanging heat between the working fluid and the heat exchange fluid.18. (canceled)19. The fluid engine of claim 16 , wherein the means for condensing the working fluid includes a cooling jacket arranged around the cover claim 16 , such that the working fluid condenses in the space formed by the cover.20. (canceled)21. The fluid engine of claim 20 , wherein the space ...

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18-01-2018 дата публикации

INTERNAL COMBUSTION ENGINE

Номер: US20180016973A1
Автор: WATANABE Masaki
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

An internal combustion engine provided with a cylinder block able to move relative to a crankcase is provided with a block movement mechanism arranged just at one side of the internal combustion engine, a pair of guide walls provided at the crankcase, a support member supporting a side surface of the cylinder block, and a pushing member pushing against a side surface of the cylinder block. Further, at the guide wall at the side of arrangement of the block movement mechanism, the support member is attached to the top side from the position of attachment of the other end part of the connecting member and the pushing member is attached to the bottom side from the position of attachment of the other end part of the connecting member, while at the guide wall at the opposite side from the side of arrangement of the block movement mechanism, the support member is attached to the bottom side (bottom side of cylinder block) a predetermined space from pushing member. 1. An internal combustion engine including a cylinder block able to move relative to a crankcase and a cylinder head attached to a top part of the cylinder block , the internal combustion engine comprising:a block movement mechanism arranged at only one side of the internal combustion engine when viewing the internal combustion engine from an axial line direction of the crankshaft supported at the crankcase to be able to freely rotate and making the cylinder block move relative to the crankcase;a pair of guide walls provided at the crankcase so as to face side surfaces of the cylinder block;support members attached to the guide wall at the side of arrangement of the block movement mechanism and the guide wall at the opposite side and supporting the side surfaces of the cylinder block; andpushing members attached to the guide wall at the side of arrangement of the block movement mechanism and the guide wall at the opposite side and pushing the side surfaces of the cylinder block,the block movement mechanism ...

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22-01-2015 дата публикации

Fuel injector spray pattern

Номер: US20150020768A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

A fuel injector having an injector axis, comprising a first nozzle aiming in a first radial direction; a first nozzle pair aiming in radial directions each equally angled relative to the first direction, closest to the first radial direction, and having a longest radial offset; a nozzle second pair in radial directions each equally angled relative to the first direction; and another nozzle aiming opposite the first radial direction and having a shortest radial offset.

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22-01-2015 дата публикации

METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE

Номер: US20150020772A1
Принадлежит:

An internal combustion engine has an intake channel which opens via a first valve into a crankcase of the engine. The first valve opens at a first frequency (f). The engine has a second valve, which controls the quantity of fuel supplied into the intake channel. The quantity of fuel is controlled by controlling the time interval during which the second valve is open during each engine cycle (x). A control device is provided to control the quantity of fuel supplied. In a first operating state, the second valve is opened at a second frequency (f, f, f) which is coordinated with the first frequency (f). In a second operating state, the second valve is opened independently of the first frequency (f). 1. A method for operating a combustion engine including a crankcase; a first valve configured to open at a first frequency (f); an intake channel configured to open into said crankcase via said first valve; a second valve configured to be open for a time duration during every engine cycle (x) to control an amount of fuel supplied to said intake channel; and , a control unit operatively connected to said second valve to control said amount of fuel supplied to said intake channel by controlling said time duration; the method comprising the steps of:{'sub': 2', '3', '4', '1, 'opening, in a first operating state, the second valve at a second frequency (f, f, f) matched to the first frequency (f); and,'}{'sub': '1', 'opening, in a second operating state, the second valve independently of the first frequency (f).'}2. The method of claim 1 , wherein claim 1 , in the first operating state claim 1 , the first frequency (f) is exactly as large as the second frequency (f).3. The method of claim 1 , wherein the first frequency (f) is an integral multiple of the second frequency (f).4. The method of claim 1 , wherein the second frequency (f) is an integral multiple of the first frequency (f).5. The method of claim 1 , wherein claim 1 , in the second operating state claim 1 , the ratio ...

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16-01-2020 дата публикации

Two-Cycle Diesel Engine Configured for Operation with High Temperature Combustion Chamber Surfaces

Номер: US20200018220A1
Принадлежит:

A 2-cycle, direct-injection diesel engine configured to accommodate low cetane diesel and jet fuels. The engine includes combustion chambers having surfaces which are operable at high temperatures during engine operation to increase the combustion rate of low cetane fuels. The engine is further configured to reduce starting times in cold and/or low pressure situations such as those experienced during attempts to restart a plane engine at relatively high altitudes. 1. An engine , comprising: a cylinder comprising an intake port proximate to a first side of the cylinder and an exhaust port proximate to a second side of the cylinder opposite the first side; and', 'a first fluid flow channel located adjacent at least one of the intake port and the exhaust port to cool the cylinder of the engine block;, 'an aluminum engine block, comprisinga composite sleeve located within the cylinder;a head assembly comprising a second fluid flow channel to cool the head assembly engaged with the engine block; a fuel flow channel between a fuel source and an injector tip;', 'a return fuel channel between the injector tip and the fuel source; and', 'a cooling fuel channel between the injector tip and the fuel source;, 'a fuel injector assembly coupled to the head assembly, the injector assembly comprisinga fire plate fixed between the sleeve and the head assembly; anda piston having a crown and located within the sleeve and configured to oscillate within the sleeve.2. The engine of claim 1 , wherein the first fluid flow channel includes a first branch passing over the exhaust port and a second branch passing under the exhaust port.3. The engine of claim 1 , wherein the composite sleeve is a metal composite.4. The engine of claim 3 , wherein the metal composite is a metal matrix aluminum alloy coated with steel.5. The engine of claim 4 , wherein the aluminum alloy comprises an Al—Si alloy claim 4 , an SiC particulate claim 4 , and a Ni coated graphite that are solution and precipitation ...

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16-01-2020 дата публикации

IN-LINE FOUR CYLINDER ENGINE HAVING NO SECONDARY FORCES OR IMBALANCE

Номер: US20200018346A1
Принадлежит:

An internal combustion engine includes one or more unopposed cylinder units where each cylinder unit drives the crankshaft via a yoke assembly rather than a conventional connecting rod. The yoke assembly is formed by a connecting rod assembly that can have an upper portion having a connecting member connected to the piston, and a lower portion. The connecting rod assembly moves exclusively along the bore axis of the cylinder, with no side to side motion. The connecting rod assembly also defines a transverse slot in the yoke portion in which a connecting rod bearing housing reciprocates with motion of a connecting rod journal on the crankshaft within the transverse slot. Since the motion of the connecting rod is linear, and the connecting rod bearing housing moves circularly, there are no secondary forces resulting in an inline engine using the unopposed cylinder unit configuration. 1. An in-line four cylinder engine having no secondary imbalance , comprising: a cylinder bore having a bore axis;', 'a piston configured to reciprocates within the cylinder bore along the bore axis;', 'a piston connecting rod assembly that reciprocates exclusively along the bore axis with the piston, the piston connecting rod assembly having a yoke portion defining a transverse slot that is transverse to the bore axis and having a connecting member that connects the yoke portion to the piston, and further having outward facing slide bearing disposed on a first end side of the yoke portion and a second end side of the yoke portion which are each respectively configured to interface with a vertical track in a crankcase of the internal combustion engine;', 'a connecting rod bearing housing that is mounted in the transverse slot and that is configured to reciprocate within the transverse slot, and which is further configured to house a connecting rod bearing to interface with a connecting rod journal of a crankshaft; and, 'exactly four cylinder units configured in an in-line arrangement, ...

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28-01-2016 дата публикации

ONE-STROKE INTERNAL COMBUSTION ENGINE

Номер: US20160025001A1
Автор: Han Kyung Soo
Принадлежит:

One-stroke internal combustion engines may comprise reciprocating pistons which are either straight or rotary. Three principles are required to make one-stroke engines work: create four dedicated chambers, assign the chambers with coordinated functions, and make pistons move in unison. The functions will be assigned only to a single stroke but an Otto cycle produces a repeating four stroke cycle. Since four functions are performed simultaneously during one stroke, every stroke becomes a power stroke. In reality. 1-stroke engines are physically rearranged 4-stroke engines. Both straight and rotary 1-stroke engines can be modified to comprise opposed piston opposed cylinder (OPOC) engines. The reciprocating piston output of 1-stroke pistons may be converted to continuously rotating output by using crankshafts with split bushings or newly developed Crankgears with conventional bearings. A 1-stroke engine may require only one crankshaft and thus may reduce the number of parts and increase the specific power ratio. Outputs of two 1-stroke engines may be combined using a spur/helical gear assembly to increase power output. 1. A reciprocating rotary engine for providing a greater than 180° or unidirectional power stroke , the rotary piston engine respectively comprisinga first piston and a third piston on a first central shaft and for reciprocating movement within a first cylindrical housing having corresponding first and third partitions, the first and third pistons and first and third partitions separated from one another by a first central plate; anda second piston and a fourth piston on a second central shaft and for reciprocating movement within a second cylindrical housing having corresponding second and fourth partitions separated from one another by a second central plate, the first cylindrical housing having first and second dedicated chambers, and the second housing having third and fourth dedicated chambers, each chamber adapted to be in a compressed state when ...

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26-01-2017 дата публикации

Liquid and Gaseous Multi-Fuel Compression Ignition Engines

Номер: US20170022882A1
Автор: Sturman Oded Eddie
Принадлежит:

Methods of operation of liquid and gaseous multi-fuel compression ignition engines that may be operated on a gaseous fuel or a liquid fuel, or a combination of both a gaseous fuel and a liquid fuel at the same time and in some embodiments, in the same combustion event. Various embodiments are disclosed. 1. A method of operating an engine comprising:providing a compression ignition engine having at least one combustion cylinder having a liquid fuel injector and a gaseous fuel injector for providing a gaseous fuel and air mixture to the engine;adding the gaseous fuel and air to the combustion cylinder during an intake stroke of the engine;compressing the air and gaseous fuel mixture to obtain compression ignition when a piston in the combustion cylinder is at or near a top dead center position.2. The method of wherein after ignition claim 1 , initiating a series of short injection pulses of the liquid fuel into the combustion chamber as the piston moves away from the top dead center position using the liquid fuel injector to extend the combustion over a greater crankshaft angle.3. The method of wherein the series of short injection pulses comprises at least 8 injection pulses.4. The method of wherein the gaseous fuel is compressed natural gas.5. The method of wherein the liquid fuel has a self ignition temperature that is less than the self ignition temperature than the compressed natural gas.6. The method of wherein the liquid fuel is a diesel fuel.7. The method of further comprising:providing a gaseous fuel to the air before it is compressed as the piston in the combustion cylinder moves toward a top dead center position.8. The method of wherein compression ignition occurs by compression ignition of the gaseous fuel.9. The method of wherein compression ignition occurs by compression ignition of the liquid fuel.10. The method of wherein the liquid fuel has a self ignition temperature that is greater than the self ignition temperature than the compressed natural gas. ...

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26-01-2017 дата публикации

ROTARY VALVE ENGINE

Номер: US20170022909A1
Автор: Trentham O. Paul
Принадлежит:

A reciprocating engine includes an engine body presenting an internal chamber and a fluid intake that supplies intake fluid to the internal chamber. The engine also includes a piston that oscillates within the internal chamber during engine operation. The engine body includes a block and a head that form the internal chamber. 1. A reciprocating engine comprising:an engine body presenting an internal chamber and a fluid intake that supplies intake fluid to the internal chamber;a piston that oscillates within the internal chamber during engine operation,said engine body including a head that presents a passage intersecting the internal chamber; anda head plug adjustably axially positioned at least partly within the passage, with movement of the head plug axially along the passage serving to adjust the compression ratio of the internal chamber.2. The reciprocating engine as claimed in claim 1 ,said head plug presenting a lower combustion surface that defines a plug concave opening.3. The reciprocating engine as claimed in claim 2 ,said plug concave opening defining a spherical cap shape.4. The reciprocating engine as claimed in claim 2 ,said piston presenting a side surface and an upper combustion surface that defines a piston concave opening spaced from the side surface, with the concave openings being opposed to one another.5. The reciprocating engine as claimed in claim 4 ,said concave openings each defining a spherical cap shape,said concave openings being adjacent one another and cooperatively forming an approximately spherical combustion volume within the internal chamber when the piston is located at top dead center.6. The reciprocating engine as claimed in claim 5 ,said piston concave opening comprising a semispherical opening.7. The reciprocating engine as claimed in claim 6 ,said upper combustion surface including a planar upper surface that surrounds the semispherical opening and cooperates with the engine body to define a bump clearance dimension when the ...

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25-01-2018 дата публикации

INTERNAL COMBUSTION ENGINE

Номер: US20180023452A1
Принадлежит:

An internal combustion engine has a cooling jacket defined in the cylinder block for cooling at least an exhaust side of the cylinder. The cooling jacket at least partially surrounds the cylinder and includes a first cooling passage positioned between the exhaust passage and the first auxiliary exhaust passage, and a second cooling passage positioned between the exhaust passage and the second auxiliary exhaust passage. The cooling jacket on at least the exhaust side of the cylinder comprises an upper portion and a lower portion which are in fluid communication with each other via at least one of the first cooling passage and the second cooling passage. 1. An internal combustion engine comprising:a crankcase;a crankshaft adapted to rotate about a crankshaft axis and disposed at least in part in the crankcase;a cylinder block connected to the crankcase, the cylinder block defining a cylinder having a cylinder axis;a cylinder head connected to the cylinder block, the cylinder block disposed between the cylinder head and the crankcase,a piston disposed in the cylinder and operatively connected to the crankshaft, the cylinder, the cylinder head and the piston together defining at least one combustion chamber;an intake port defined by the cylinder block for allowing at least one combustion component to enter the combustion chamber;an exhaust port defined by the cylinder block, on an exhaust side of the internal combustion engine, for allowing exhaust gas to exit the combustion chamber through an exhaust passage extending from the exhaust port in the cylinder block;a first auxiliary exhaust port defined by the cylinder block and a second auxiliary exhaust port defined by the cylinder block, the first and second auxiliary exhaust ports positioned circumferentially one on either side of the exhaust port and connected to the cylinder for allowing exhaust gas to exit the combustion chamber;a first auxiliary exhaust passage in the cylinder block extending from the first ...

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25-01-2018 дата публикации

Spark plug fouling detection for ignition system

Номер: US20180023531A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Methods and systems are provided for determining a type of spark plug fouling. In one example, a method may include differentiating spark plug fouling due to soot accumulation from spark plug fouling due to fuel additive accumulation based on a current on a control wire of the spark plug following application of a dwell command. Further, exhaust oxygen sensor degradation and/or exhaust catalyst degradation may be determined based on switching frequencies of one or more exhaust oxygen sensors and the type of spark plug fouling.

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25-01-2018 дата публикации

DEVICE FOR COMPENSATING FREE INERTIA FORCES OF A RECIPROCATING PISTON INTERNAL COMBUSTION ENGINE

Номер: US20180023656A1
Принадлежит:

Systems and methods for reducing inertial forces of a reciprocating piston internal combustion engine are described. The systems and methods may provide for counterweights in a form of pistons in cylinders that are moved via electromagnets. The counterweights may be moved at a frequency that corresponds to engine speed via an alternating current. 1. A reciprocating piston internal combustion engine including a device for compensating free inertial forces of the reciprocating piston internal combustion engine with at least two pistons , the device comprising at least two counterweights , each of which can be displaced between two end positions and with each of which an electromagnet for displacing the corresponding counterweight is associated , wherein the counterweights are associated with the pistons adjacent thereto in the axial direction of a crankshaft of the reciprocating piston internal combustion engine and a control unit is provided that displaces the counterweight by means of the associated electromagnet in antiphase to the respective associated piston and wherein a revolution rate detector detects a revolution rate of the reciprocating piston internal combustion engine , a comparator compares the detected revolution rate with a threshold value and the control unit supplies the at least two electromagnets with electric current if the detected revolution rate is less than the threshold value.2. The reciprocating piston internal combustion engine of claim 1 , wherein the counterweights are implemented as pistons mounted in cylinders.3. The reciprocating piston internal combustion engine of claim 1 , wherein the counterweights are each held in a null position by a spring.4. The reciprocating piston internal combustion engine of claim 1 , wherein the reciprocating piston internal combustion engine comprises at least one third claim 1 , central piston disposed in the axial direction of the crankshaft.5. The reciprocating piston internal combustion engine of ...

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29-01-2015 дата публикации

Volume-Controlled Four-Stroke Reciprocating Internal Combustion Engine and Method for Operating the Four-Stroke Reciprocating Internal Combustion Engine

Номер: US20150027116A1
Автор: Fischer Hubert
Принадлежит:

The invention relates to a volume-controlled four-stroke reciprocating internal combustion engine comprising a first cylinder, in which a first piston that is operationally connected to a crankshaft via a first connecting rod, is arranged so as to be displaceable in a reciprocating motion, and at least one second cylinder, in which a second piston that is operationally connected to the crankshaft via a second connecting rod is arranged so as to be displaceable in a reciprocating motion. The engine further includes a fresh air tract for the second cylinder, in which an expansion/compression machine is arranged in the direction of flow of fresh air before a gas exchange inlet valve of the second cylinder, wherein the expansion/compression machine is the first cylinder. The volume-controlled internal combustion engine as per the invention has great potential for saving fuel and thereby for reducing CO. 1. A volume-controlled four-stroke reciprocating internal combustion engine comprising:a first cylinder, in which a first piston operatively connected to a crankshaft via a first connecting rod is disposed so as to be displaceable in a reciprocating motion;a second cylinder, in which a second piston operatively connected to the crankshaft via a second connecting rod is disposed so as to be displaceable in a reciprocating motion;a fresh air tract for the second cylinder, in which an expansion/compression machine is disposed in a direction of flow of fresh air before a gas exchange inlet valve of the second cylinder; andan exhaust tract for the second cylinder, wherein the expansion/compression machine is the first cylinder.2. The reciprocating internal combustion engine according to claim 1 , wherein a heat exchanger is disposed on the exhaust gas tract claim 1 , wherein said flow of fresh air claim 1 , before flowing through the expansion/compression machine claim 1 , is capable of being heated in the heat exchanger by the exhaust gas from the internal combustion engine. ...

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24-01-2019 дата публикации

INTERNAL COMBUSTION ENGINE PROVIDED WITH A SEMI- AUTOMATIC CHOKE DEVICE

Номер: US20190024611A1
Принадлежит:

A starter system (), for an internal combustion engine () including a carburetor () and a recoil starter (), may include a sensor (), a controller () and an actuator (). The carburetor () may have at least a choke valve () for controlling a flow of a fresh air into a combustion chamber () of the engine () during engine start. The choke valve () may have a choke position and an open position and may be positioned into the choke position at engine start. The recoil starter () may start a rotation of an engine crankshaft causing a fuel supply to the combustion chamber () of the engine (). The sensor () may be disposed to detect movement parameters associated with the engine () or crankshaft responsive to operation of the recoil starter (). The controller () may be operably coupled to the sensor () to receive information indicative of the movement parameters and providing a control signal based on processed information providing an indication of an optimal condition for engine start. The actuator () may be configured to receive the control signal from the controller () and to initiate automatic repositioning of the choke valve () from the choke position to the open position based on receiving the control signal from the controller () responsive to the indication of the optimal condition for engine start. 1. A starter system for an internal combustion engine , the engine comprising:a carburetor having at least a choke valve for controlling a flow of a fresh air into a combustion chamber of the engine during engine start, the choke valve having a choke position and an open position, the choke valve being positioned into a choke position at engine start, anda recoil starter for starting a rotation of an engine crankshaft causing a fuel supply to the combustion chamber of the engine, the starter system comprising:a sensor disposed to detect movement parameters associated with the engine or crankshaft responsive to operation of the recoil starter;a controller operably ...

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28-01-2021 дата публикации

FUEL INJECTOR WITH DIVIDED FLOWPATH NOZZLE

Номер: US20210025317A1
Принадлежит:

A fuel delivery system and a direct injector for directly injecting fuel into a cylinder are provided. In one example, a direct fuel injector includes a nozzle in fluidic communication with a fuel source, the nozzle includes at least one fuel flow path that divides into two exit flow paths within the nozzle defining a plurality of exit orifices stemming from a common inlet orifice thereby improving the atomization and mixing of the fuel as it enters the cylinder. A plurality of spaced-apart divided fuel flow paths may be positioned within the nozzle to further optimize mixing and reduce wall and piston wetting. 1. A direct fuel injector comprising: an intake side and an opposite exhaust side;', 'a fuel flow path for transmitting fuel from the fuel source therethrough, the fuel flow path extending through the nozzle from an inlet orifice on the intake side to the exhaust side; and,', 'a divider within the fuel flow path for dividing the fuel flow path into a least two fuel exit flow paths, each fuel exit flow path defining an exit orifice on the exhaust side of the nozzle., 'a nozzle in fluid communication with a fuel source, including;'}2. The direct fuel injector of claim 1 , wherein the divider is substantially wedge shaped.3. The direct fuel injector of claim 1 , wherein the divider is substantially rectangular shaped.4. The direct fuel injector of claim 1 , wherein the inlet orifice has a cross-sectional area that is larger than the cross-sectional area than one of said exhibit orifices.5. The direct fuel injector of claim 1 , wherein the cross-sectional ratio of all exit orifices and the inlet orifice is less than or equal to 2.6. The direct fuel injector of claim 4 , wherein the cross-sectional area of the inlet orifice is smaller than the combined cross-sectional area of all exit orifices in flued communication with the inlet orifice.7. The direct fuel injector of claim 1 , wherein the fuel flow path is substantially Y-shaped defining an upstream flow path ...

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02-02-2017 дата публикации

EXHAUST-GAS-TURBOCHARGED INTERNAL COMBUSTION ENGINE WITH PARTIAL DEACTIVATION AND METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE OF SAID TYPE

Номер: US20170030279A1
Принадлежит:

Embodiments for operating an engine in a partial deactivation mode are provided. In one example, a method for an engine having a first cylinder group and a second cylinder group includes responsive to engine operation in a first engine speed-load region, deactivating one or more cylinders of the second cylinder group, and responsive to the deactivating, adjusting exhaust valve timing of one or more cylinders of the first cylinder group. The method further includes responsive to engine operation a second engine speed-load region, adjusting exhaust valve timing of the one or more cylinders of the first cylinder group, and responsive to the adjusting, deactivating the one or more cylinders of the second cylinder group. 1. A supercharged internal combustion engine , comprising:{'sub': 1,ex', '1,ex, 'at least three cylinders, each cylinder having at least one outlet opening which is adjoined by an exhaust line for discharging exhaust gases via an exhaust-gas discharge system, each cylinder further having at least one inlet opening which is adjoined by an intake line for supply of charge air via an intake system, the at least three cylinders arranged into at least two groups with in each case at least one cylinder, each cylinder of a first group of the at least two groups being a cylinder which is in operation even in the event of partial deactivation of the internal combustion engine, and each cylinder of a second group of the at least two groups being formed as a load-dependently switchable cylinder, at least one outlet opening of at least one cylinder of the first group equipped with an at least partially variable valve drive, with an oscillating outlet valve which opens up or shuts off an associated outlet opening and which is adjustable at least with regard to a control time for opening, the oscillating outlet valve realizing a valve lift Δhbetween an open position and a closed position and opening up the associated outlet opening during an opening duration Δt;'}an ...

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02-02-2017 дата публикации

SYSTEM FOR AIR SUPPLY TO ENGINE OF A MOTOR BOAT

Номер: US20170030309A1
Автор: SULA Martin
Принадлежит:

The present invention is a system for air supply to the engine of a motor float comprising a bottom part and an upper part of the body defining the inner space of the float, in which a combustion engine is arranged, wherein the upper part of the body is in its front part provided with an air supply, characterized in that the combustion engine is arranged in the engine compartment and separated from the rest of the inner space of the float by means of a partition provided with a suction opening in its front part, wherein to provide the circulation of air in the inner space of the float a sealing rib extends from the front part of the partition towards the tip of the float, separating the air supply and suction opening from one another, wherein at least one rear pump for sucking the leaking water is arranged in the rear part of the inner space of the float. The main object of the invention is thus to use the interspace of the float to provide separation of water and air, when eventual separated water may be sucked away by a pump operating on any principle (electric, vacuum, etc.). 1. A system for air supply to the engine of a motor float comprising a bottom part and an upper part of the body defining the inner space of the float , in which a combustion engine is arranged , wherein the upper part of the body is in its front section provided with an air supply , wherein the combustion engine is arranged in an engine compartment , which is separated from the rest of the inner space of the float by means of a partition provided in the front part with a suction opening , wherein to secure the air circulation in the inner space of the float a sealing rib extends from the front part of the partition towards the tip of the float , separating the air supply and the suction opening from one another , wherein in the rear part of the inner space of the float at least one rear pump for sucking out the leaked water is arranged.2. The system for air supply to the engine of a motor ...

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04-02-2016 дата публикации

Cylinder arrangement for opposed piston two-stroke engine

Номер: US20160032822A1
Принадлежит: AVL Powertrain Engineering Inc

An opposed-piston, two-stroke engine is provided and includes a first cylinder having a first longitudinal axis, a first inlet port, and a first exhaust port. First pistons are slidably disposed within the first cylinder and are movable toward one another and away from one another. The engine additionally includes a second cylinder having a second longitudinal axis, a second inlet port, and a second exhaust port. The second cylinder is disposed adjacent to the first cylinder with the second inlet port being aligned with the first exhaust port in a first direction extending substantially perpendicular to the first longitudinal axis and the second longitudinal axis, and the second exhaust port being aligned with the first inlet port in the first direction. Second pistons are slidably disposed within the second cylinder and are movable toward one and away from one another.

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04-02-2016 дата публикации

CYLINDER ARRANGEMENT FOR OPPOSED PISTON TWO-STROKE ENGINE

Номер: US20160032823A1
Принадлежит:

An opposed-piston, two-stroke engine is provided and includes a first cylinder having a first longitudinal axis and a first pair of pistons slidably disposed within the first cylinder and movable toward one another in a first mode of operation and away from one another in a second mode of operation. The engine additionally includes a second cylinder having a second longitudinal axis and a second pair of pistons slidably disposed within the second cylinder and movable toward one another in the first mode of operation and away from one another in the second mode of operation. A crankshaft is connected to at least one of the first pair of pistons and at least one of the second pair of pistons and has an axis of rotation. The axis of rotation is disposed between and is substantially perpendicular to the first longitudinal axis and the second longitudinal axis. 1. An opposed-piston , two-stroke engine comprising:a first cylinder having a first longitudinal axis;a first pair of pistons slidably disposed within said first cylinder and movable along said first longitudinal axis toward one another in a first mode of operation and away from one another along said first longitudinal axis in a second mode of operation;a second cylinder having a second longitudinal axis;a second pair of pistons slidably disposed within said second cylinder and movable along said second longitudinal axis toward one another in said first mode of operation and away from one another along said second longitudinal axis in said second mode of operation; anda first crankshaft operably connected to at least one of said first pair of pistons and at least one of said second pair of pistons and having a first axis of rotation, said first axis of rotation being disposed between and substantially perpendicular to said first longitudinal axis and said second longitudinal axis.2. The opposed-piston claim 1 , two-stroke engine of claim 1 , wherein said first cylinder and said second cylinder are offset from one ...

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04-02-2016 дата публикации

METHOD FOR A VARIABLE DISPLACEMENT ENGINE

Номер: US20160032845A1
Принадлежит:

Various systems and methods are described for controlling engine operation. One method comprises, during a first variable displacement engine (VDE) mode in an engine having four cylinders, deactivating a first cylinder of the four cylinders and firing a second, third, and fourth cylinder of the four cylinders, each firing event separated by 240 degrees of crank angle (CA). The engine may be operated in a non-VDE mode by activating the first of the four cylinders and firing the first cylinder between the third and fourth cylinders. 1. A method , comprising:during a first variable displacement engine (VDE) mode in an engine having four cylinders, deactivating a first cylinder of the four cylinders and firing a second, third, and fourth cylinder of the four cylinders, each firing event separated by 240 degrees of crank angle (CA); andduring a non-VDE mode, activating the first of the four cylinders and firing the first cylinder between the third and fourth cylinders.2. The method of claim 1 , wherein during the non-VDE mode claim 1 , the third cylinder of the four cylinders is fired at 120 degrees of crank rotation claim 1 , the second of the four cylinders is fired at 240 degrees of crank rotation after the third cylinder is fired claim 1 , the fourth of the four cylinders is fired at 240 degrees of crank rotation after the second cylinder is fired claim 1 , and the first cylinder of the four cylinders is fired at 120 degrees of crank rotation after the fourth cylinder is fired.3. The method of claim 1 , further comprising during a second VDE mode claim 1 , deactivating the third and the fourth of the four cylinders claim 1 , and firing the first and the second of the four cylinders.4. The method of claim 3 , wherein firing events in the second VDE mode are separated by 360 degrees CA.5. The method of claim 3 , wherein the second VDE mode includes low engine load conditions.6. A system claim 3 , comprising:an engine including four cylinders arranged inline wherein ...

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04-02-2016 дата публикации

VARIABLE DISPLACEMENT ENGINE CONTROL

Номер: US20160032846A1
Принадлежит:

Methods and systems are provided for controlling engine operation. One method comprises during a first condition, operating the engine with a single cylinder deactivated and remaining cylinders activated with a first intake duration, and during a second condition, operating the engine with the single cylinder deactivated and the remaining cylinders activated with a second intake duration. The method further comprises during a third condition, operating the engine with all cylinders activated. 1. A method for an engine comprising:during a first condition, operating the engine with a single cylinder deactivated and remaining cylinders activated with a first intake duration;during a second condition, operating the engine with the single cylinder deactivated and the remaining cylinders activated with a second intake duration; andduring a third condition, operating the engine with all cylinders activated.2. The method of claim 1 , wherein the first condition includes a first engine load claim 1 , the second condition includes a second engine load claim 1 , and the third condition includes a third engine load claim 1 , and wherein the second engine load is lower than the first engine load claim 1 , and the first engine load is lower than the third engine load.3. The method of claim 2 , further comprising during the first condition operating the remaining cylinders with a first intake valve lift claim 2 , and during the second condition claim 2 , operating the remaining cylinders with a second intake valve lift.4. The method of claim 3 , wherein during the third condition claim 3 , all cylinders are activated with the first intake duration and the first intake valve lift.5. The method of claim 4 , wherein the first intake valve lift is higher than the second intake valve lift.6. The method of claim 4 , wherein the first intake duration is longer than the second intake duration.7. The method of claim 6 , wherein the first intake duration is approximately 240 crank angle ...

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05-02-2015 дата публикации

Exhaust Management Strategies For Opposed-Piston, Two-Stroke Engines

Номер: US20150033736A1
Принадлежит:

Exhaust temperature management strategies for an opposed-piston, two-stroke engine with EGR are based on control of a ratio of the mass of fresh air and external EGR delivered to a cylinder to the mass of the trapped charge (density of the delivered charge multiplied by the trapped volume at port closing). 1. A two-cycle internal combustion engine including at least one cylinder with exhaust and intake ports , a charge air channel to provide charge air to at least one intake port of the engine , and an exhaust channel to receive exhaust from at least one exhaust port of the engine , in which an exhaust gas recirculation (EGR) loop has a loop input coupled to the exhaust channel and a loop output coupled to the charge air channel , a supercharger is operable to pump charge air in the charge air channel , a backpressure device is operable to control backpressure in the exhaust channel , and a control mechanization is operable to control the supercharger , the EGR loop , and the backpressure device during cold start of the engine.2. The two-cycle internal combustion engine of claim 1 , in which the charge air channel includes at least one charge air cooler claim 1 , wherein the loop output is coupled in series with the at least one charge air cooler.3. The two-cycle internal combustion engine of claim 1 , in which the EGR loop includes a variable valve and the control mechanization is operable to control a setting of the valve in response to a trapped temperature of the cylinder.4. The two-cycle internal combustion engine of claim 1 , in which the supercharger is one of a single-speed supercharger claim 1 , a multispeed supercharger claim 1 , and a variable-speed supercharger and the control mechanization is operable to control the speed of the supercharger in response to a trapped temperature of the cylinder.5. The two-cycle internal combustion engine of claim 1 , in which the backpressure device includes a variable valve and the control mechanization is operable to ...

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05-02-2015 дата публикации

EXHAUST VALVE ASSEMBLY FOR A TWO-STROKE ENGINE

Номер: US20150034060A1
Принадлежит:

An exhaust valve assembly has a valve actuator, a first valve part (FVP) operatively connected to the actuator, a second valve part (SVP), and at least one auxiliary valve operatively connected to the second valve part. When the actuator is in a first position, the FVP is in a fourth position, the SVP is in a seventh position and the at least one auxiliary valve is in a ninth position. When the actuator is in a second position, the FVP is in a fifth position, the SVP is in the seventh position and the at least one auxiliary valve is in the ninth position. When the actuator is in a third position, the FVP is in a sixth position, the SVP is in an eighth position and the at least one auxiliary valve is in a tenth position. The second position is intermediate the first and third positions. 1. An exhaust valve assembly for a two-stroke internal combustion engine comprising:a valve actuator movable between a first position, a second position and a third position, the second position being intermediate the first and third positions;a two-part valve having a first valve part and a second valve part, the first valve part being operatively connected to the valve actuator,the first valve part being in a fourth position when the valve actuator is in the first position,the first valve part being in a fifth position when the valve actuator is in the second position,the first valve part being in a sixth position when the valve actuator is in the third position,the fifth position being intermediate the fourth position and the sixth position,the second valve part being in a seventh position when the valve actuator is in any one of the first and second position,the second valve part being in an eighth position when the valve actuator is in the third position; andat least one auxiliary valve operatively connected to the second valve part,the at least one auxiliary valve being in a ninth position when the second valve part is in the seventh position, andthe at least one auxiliary valve ...

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17-02-2022 дата публикации

Engine Piston, Engine, Hand-Held Tool, and Method of Manufacturing an Engine Piston

Номер: US20220049642A1
Принадлежит:

A two-stroke engine piston () is disclosed comprising a piston top (), a mantle surface (), a stratified scavenging channel () in the mantle surface (), and a weight reduction space () arranged between the piston top () and the stratified scavenging channel (). The weight reduction space () has a largest first axial extent (a) at the mantle surface () and a second axial extent (a) radially inside the mantle surface (), and wherein the second axial extent (a) is greater than the largest first axial extent (a). The present disclosure further relates to an engine (), a hand-held tool (), and a method of manufacturing an engine piston (). 1. A two-stroke engine piston comprising:a piston top,a mantle surface,a stratified scavenging channel in the mantle surface, anda weight reduction space arranged between the piston top and the stratified scavenging channel,wherein the weight reduction space has a largest first axial extent at the mantle surface and a second axial extent radially inside the mantle surface, andwherein the second axial extent is greater than the largest first axial extent.2. The piston according to claim 1 , wherein the second axial extent is at least 10% greater than the largest first axial extent.3. The piston according to claim 2 , wherein the second axial extent is at least 80% greater than the largest first axial extent.4. The piston according to claim 1 , wherein the weight reduction space comprises a first uppermost delimiting surface at the mantle surface and a second upper delimiting surface radially inside the mantle surface claim 1 , and wherein the second upper delimiting surface is arranged closer to the piston top than the first uppermost delimiting surface.5. The piston according to claim 1 , wherein the piston comprises a first piston ring recess in the mantle surface claim 1 , and wherein the weight reduction space extends radially inside the first piston ring recess.6. The piston according to claim 5 , wherein the piston comprises a ...

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31-01-2019 дата публикации

GENERATOR SET

Номер: US20190032554A1
Автор: Obrist Frank
Принадлежит:

The invention relates to a generator set, in particular a generator set of a hybrid vehicle, with a two-cylinder piston engine (), which has a crankshaft housing (), in which two counter-rotating crankshafts () are arranged, which are connected by means of piston rods () to pistons (), which are guided inside two cylinders () in a tandem arrangement, wherein at least one crankshaft () is drivingly connected to a generator (), and wherein the piston engine () comprises a cylinder head (), which is connected to the crankshaft housing (), wherein the piston engine () has a lower-mounted camshaft (), and the cylinder head () can be connected to the crankshaft housing () in at least two positions, in particular positions rotated through 180° relative to each other. Furthermore, the invention relates to a vehicle with such a generator set. 111-. (canceled)12. A hybrid vehicle generator apparatus comprising:a two-cylinder piston engine having a crankshaft housing;two counter-rotating crankshafts configured and arranged in the crankshaft housing, the crankshafts connected by piston rods to pistons guided inside the two cylinders of the piston engine in a tandem arrangement, wherein at least one crankshaft is drivingly connected to a generator, and wherein the piston engine has a cylinder head connected to the crankshaft housing; anda lower-mounted camshaft such that the cylinder head is connectable to the crankshaft housing in one of at least two positions having 180° relative rotation to each other.13. The hybrid vehicle generator apparatus of claim 12 , wherein the camshaft is configured and arranged in a central plane between the crankshafts.14. The hybrid vehicle generator apparatus of claim 12 , wherein the camshaft is configured and arranged below a dead center bottom of the pistons.15. The hybrid vehicle generator apparatus of further comprising:an intake stub pipe included in the cylinder head for an ignition mixture; andan outlet stub pipe for exhaust gases, ...

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04-02-2021 дата публикации

ENGINE CONTROL METHOD AND ENGINE CONTROL DEVICE

Номер: US20210033038A1
Принадлежит:

An engine control method includes: a first fuel supply step of supplying fuel into the combustion chamber using an injector when a spark plug makes flame in the combustion chamber so that an air-fuel mixture is generated at least around the spark plug, the air-fuel mixture having an air-fuel mass ratio A/F or a gas-fuel mass ratio G/F, in which gas includes air, higher than a stoichiometric air-fuel ratio; after the first fuel supply step, an ignition step of making the flame in the combustion chamber in the compression stroke using the spark plug; and after the ignition step, a second fuel supply step of supplying the fuel into the combustion chamber in the compression stroke using the injector to increase a fuel concentration of the air-fuel mixture in the combustion chamber. 1. An engine control method of executing a cycle including an intake stroke , a compression stroke , an expansion stroke , and an exhaust stroke in a combustion chamber of an engine , the method comprising:a first fuel supply step for supplying fuel into the combustion chamber using an injector at a timing when a spark plug makes a flame in the combustion chamber so that an air-fuel mixture is generated at least around the spark plug, the air-fuel mixture having an air-fuel mass ratio A/F or a gas-fuel mass ratio G/F, in which gas includes air, higher than a stoichiometric air-fuel ratio;after the first fuel supply step, an ignition step of making the flame in the combustion chamber in the compression stroke using the spark plug; andafter the ignition step, a second fuel supply step of supplying the fuel into the combustion chamber in the compression stroke using the injector to increase a fuel concentration of the air-fuel mixture in the combustion chamber.2. The engine control method of claim 1 , whereinthe spark plug makes the flame during or before a post-mid stage, where the compression stroke is divided into four stages of a pre-stage, a pre-mid stage, the post-mid stage, and a post- ...

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08-02-2018 дата публикации

REMOVING MATERIAL BUILDUP FROM AN INTERNAL SURFACE WITHIN A GAS TURBINE ENGINE SYSTEM

Номер: US20180036776A1
Автор: Files Jay C.
Принадлежит:

A method is provided involving a gas turbine engine system. The method includes configuring a plug within a fluid passage in the gas turbine engine system, where the plug is between first and second portions of the fluid passage. Material is removed from an interior surface of the fluid passage in the first portion of the fluid passage to provide removed material, where the plug substantially prevents the removed material from entering the second portion of the fluid passage. The removed material is directed out of the fluid passage. The plug is removed from the fluid passage. 1. A method involving a gas turbine engine system , comprising:configuring a plug within a fluid passage in the gas turbine engine system, the plug between first and second portions of the fluid passage;removing material from an interior surface of the fluid passage in the first portion of the fluid passage to provide removed material, wherein the plug substantially prevents the removed material from entering the second portion of the fluid passage;directing the removed material out of the fluid passage; andremoving the plug from the fluid passage.2. The method of claim 1 , wherein the plug is removed from the fluid passage after substantially all of the removed material is directed out of the fluid passage claim 1 , and the removed material is directed out of the fluid passage using suction.3. The method of claim 1 , wherein the configuring of the plug comprises inserting the plug into the fluid passage and then configuring the plug to substantially plug the fluid passage.4. The method of claim 3 , whereinthe plug is selectively configurable between a compact configuration and an expanded configuration;the plug is inserted into the fluid passage in the compact configuration; andthe plug plugs the fluid passage in the expanded configuration.5. The method of claim 1 , wherein the plug is configured within the fluid passage using a catheter.6. The method of claim 1 , wherein the plug comprises ...

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12-02-2015 дата публикации

Six-stroke cycle engine having scavenging stroke

Номер: US20150040847A1
Автор: Ei Tsukahara
Принадлежит: Yamaha Motor Co Ltd

A six-stroke cycle engine includes an intake passage including a downstream end connected to a combustion chamber and no throttle valve therein, and an exhaust passage including a catalyst and an upstream end connected to the combustion chamber. The six-stroke cycle engine includes a first valve configured to open and close the intake passage, a second valve configured to open and close the exhaust passage, a valve gear configured to operate the first valve and the second valve so that an intake stroke, a compression stroke, an expansion stroke, and an exhaust stroke are executed, in this order, and to operate only the first valve so that a scavenging intake stroke and a scavenging exhaust stroke are executed, in this order, following the exhaust stroke. The valve gear includes a variable valve mechanism configured to continuously change an opening and closing timing and a lift amount of the first valve.

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09-02-2017 дата публикации

Virtual Variable Displacement Two-stroke Internal Combustion Piston Engine

Номер: US20170037772A1
Автор: JR. John E., Wacholtz
Принадлежит:

A true two-stroke (power and exhaust) internal combustion piston engine combining direct injection of all combustion and working fluid elements with exhaust valve(s) that open early during the power stroke if cylinder pressure falls below exhaust manifold pressure, will operate efficiently from power levels produced by conventional four-stroke engines of a fraction of the displacement of the two-stroke engine to power levels attainable by conventional four-stroke engines of twice the two-stroke engine displacement. No additional external systems will be required to enhance performance or control emissions, as all such enhancements are equivalent to control of the combustion and working fluid components. The magnitude of the combustion charge determines the power, and the makeup of the combustion components determine exhaust emissions. Any implementation of the true two-stroke engine will have the further advantages of requiring only half the cylinders (space and weight) and an equivalent reduction in required support systems. No intake valve train, no intake filter or manifolds, no catalytic converter or exhaust gas recirculation will be required. Some implementations may eliminate other support systems entirely (starter, cooling, exhaust valve train, etc.) 1. A true two-stroke (power and exhaust) internal combustion piston engine combining direct injection of all combustion and working fluid elements with exhaust valve(s) that open early during the power stroke if cylinder pressure falls below exhaust manifold pressure will operate at near thermodynamic maximum efficiency from power levels equivalent to conventional four-stroke engines of a fraction of the displacement of the two-stroke engine to power levels attainable by conventional four-stroke engines of twice the displacement of the two-stroke engine.2. A true two-stroke (power and exhaust) internal combustion piston engine combining direct injection of all combustion and working fluid elements will provide ...

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09-02-2017 дата публикации

SMALL ENGINE CONTROL SYSTEM AND METHOD FOR ENABLING THE USE OF TRADITIONAL CRANKSHAFT

Номер: US20170037794A1
Принадлежит:

An engine ignition control method and system for controlling ignition timing that computes a predicted crankshaft angular velocity based on prior computed and verified crankshaft angular velocity and acceleration and determines a capture window of the next crankshaft position sensor pickup signal for the verification of the predicted crankshaft angular velocity. The ignition control system also utilizes both crankshaft position pickup signals and the intake manifold air pressure measurements for determining the stroke of the combustion cycle in turn providing more accurately timed signals for the fuel injection and ignition systems. During engine starts, the engine ignition control system performs a series of continuous spark-triggering, determines if each spark-triggering being at the correct or incorrect point in the combustion cycle by detecting if there is any engine acceleration and adjusts the generation of the signal for the next spark-triggering accordingly. 1. A four stroke cycle internal combustion engine , comprising:a single notch crankshaft connected to said piston;a crankshaft position sensor configured to detect the single notch crankshaft rotational movements and generating periodic pickup electrical signals as the single notch crankshaft rotates during a combustion cycle, wherein one crankshaft position sensor pickup electrical signal being generated for each full rotation of the single notch crankshaft;an intake manifold air pressure sensor configured to continuously measure air pressure in an intake manifold in the engine; and continuously receiving the intake manifold air pressure measurements;', 'periodically receiving the crankshaft position sensor pickup electrical signals;', 'verifying a crankshaft angular velocity for each full rotation of the single notch crankshaft using a computed capture window of crankshaft position sensor pickup electrical signal;', 'if the current crankshaft angular velocity is verified, determining a spark advance ...

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09-02-2017 дата публикации

METHOD AND SYSTEMS FOR EXHAUST GAS RECIRCULATION

Номер: US20170037817A1
Принадлежит:

Various methods and systems are provided for reducing cylinder-to-cylinder variation in exhaust gas recirculation. In one embodiment, a system comprises a first cylinder group of an engine having a first number of cylinders, a second cylinder group of the engine having a second number of cylinders that is not an integer multiple of the first number of cylinders, and an exhaust system coupled to the first cylinder group and the second cylinder group. In at least one mode of operation, the exhaust system has exhaust ports of the first cylinder group fluidly coupled to an intake of the engine and exhaust ports of the second cylinder group fluidly decoupled from the intake. 1. A system , comprising:a first cylinder group of an engine having a first number of cylinders;a second cylinder group of the engine having a second number of cylinders that is not an integer multiple of the first number of cylinders; andan exhaust system coupled to the first cylinder group and the second cylinder group, and in at least one mode of operation the exhaust system has exhaust ports of the first cylinder group fluidly coupled to an intake of the engine and exhaust ports of the second cylinder group fluidly decoupled from the intake.2. The system of claim 1 , further comprising a damping volume positioned in the intake claim 1 , the damping volume comprising an expansion region to collect charge air prior to distributing the charge air to the engine claim 1 , the charge air comprising one or more of intake air or exhaust gas from the first cylinder group.3. The system of claim 1 , wherein the first number of cylinders is three cylinders claim 1 , and wherein the second number of cylinders is five cylinders.4. The system of claim 1 , wherein the exhaust system comprises a first exhaust manifold coupled to the first cylinder group and a second exhaust manifold coupled to the second cylinder group claim 1 , the first exhaust manifold fluidically coupled to the intake and the second exhaust ...

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08-02-2018 дата публикации

CYLINDER BLOCK WITH INTEGRATED OIL JACKET

Номер: US20180038247A1
Принадлежит: Cummins, Inc.

An engine block, an engine subassembly, and method for providing and manufacturing an engine block. The engine block includes a plurality of cylinder barrels positioned in the engine block, at least one oil jacket channel formed in the engine block, and an oil inlet port positioned in a peripheral wall of the engine block and connected to the at least one oil jacket channel. The at least one oil jacket channel includes a plurality of curved channel sections. Each curved channel section in the plurality of curved channel sections extends about at least a portion of a circumferential portion of a respective cylinder barrel in the plurality of cylinder barrels. The at least one oil jacket channel extends between adjacent cylinder barrels of the plurality of cylinder barrels in the engine block. 1. An engine block comprising:a plurality of cylinder barrels positioned in the engine block;at least one oil jacket channel formed in the engine block, the at least one oil jacket channel including a plurality of curved channel sections, each curved channel section in the plurality of curved channel sections extending about at least a portion of a circumferential portion of a respective cylinder barrel in the plurality of cylinder barrels, wherein the at least one oil jacket channel extends between adjacent cylinder barrels of the plurality of cylinder barrels in the engine block; andan oil inlet port positioned in a peripheral wall of the engine block, the oil inlet port connected to the at least one oil jacket channel.2. The engine block according to claim 1 , wherein the at least one oil jacket channel is opened to the cylinder barrel in each curved channel section in the plurality of curved channel sections.3. The engine block according to claim 1 , further comprising a cylinder liner positioned in each cylinder barrel in the plurality of cylinder barrels claim 1 , the cylinder liner engaging the curved channel section of the at least one oil jacket channel such that the ...

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12-02-2015 дата публикации

FUEL INJECTION CONTROLLER

Номер: US20150046068A1
Принадлежит:

In a fuel injection controller that controls a fuel injection device that injects fuel directly into cylinders of an engine, a unit that detects an interference period gradually shifts an injection period of fuel from the fuel injector from a first period during which the injection period does not overlap with an initial value of the interference period, and is distant from the initial value by a given value or larger toward a second period during which the injection period overlaps with the initial value of the interference period. Then, the fuel injection controller detects an actual interference period according to a variation of an air-fuel ratio (A/F value) detected by an air-fuel ratio sensor toward lean. 1. A fuel injection controller that controls a fuel injector which injects a fuel directly into a cylinder of an engine during an injection period , comprising:an air-fuel ratio sensor disposed in an exhaust passage of the engine, andan interference period detection unit detecting an interference period of an crank angle range in which the fuel injected from the fuel injector is adhered to an opened intake valve, whereinthe interference period detection unit shifts an injection period from a first period during which the injection period does not overlap with the interference period toward a second period during which the injection period overlaps with the interference period, and then the interference period detection unit detects the interference period according to a variation of an air-fuel ratio detected by an air-fuel ratio sensor.2. The fuel injection controller according to claim 1 , further comprising:an initial value storage unit storing an initial value of the interference period therein,wherein the interference period detection unit gradually shifts the injection period from a period that does not overlap with the initial value, and is distant from the initial value by a given value or larger toward another period that overlaps with the initial ...

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12-02-2015 дата публикации

Minimizing Alcohol Use In High Efficiency Alcohol Boosted Gasoline Engines

Номер: US20150046069A1
Принадлежит: ETHANOL BOOSTING SYSTEMS LLC

A number of systems and methods are disclosed which increase the replenishment interval for anti-knock fluid. This is especially important during activities which require a large amount of anti-knock fluid, such as towing. In some embodiments, the systems and methods are used to reduce anti-knock fluid consumption. For example, changes to engine operation, such as rich operation, spark retarding, upspeeding, and variable valve timing, all serve to reduce the amount of anti-knock fluid required to eliminate knocking. In other embodiments, the composition of the anti-knock fluid is modified, such as by using a higher octane fluid, or through the addition of water to the anti-knock fluid. In other embodiments, the replenishment interval is increased through a larger anti-knock fluid storage capacity. In one embodiment, a three tank system is used where the third tank can be used to store gasoline or anti-knock fluid, depending on the driving conditions.

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06-02-2020 дата публикации

Two-Stroke Internal Combustion Engine

Номер: US20200040838A1
Принадлежит: KTM AG

A two-stroke internal combustion engine having at least one cylinder provided with a combustion chamber and an outlet and having a crank housing provided with a crank shaft. The housing is flow-connected to the combustion chamber via at least one transfer port, and the internal combustion engine is formed to inject fuel into the transfer port, against the transfer port from the crank housing into the combustion chamber; the internal combustion engine has at least one cylinder having two injectors, and fuel can be introduced by means of only one injector with a first engine load and by means of the two injectors with a second engine load.

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06-02-2020 дата публикации

DUAL ENGINE-COMPRESSOR SYSTEM

Номер: US20200040880A1
Автор: Gamble Christopher L.
Принадлежит:

The present invention is directed to a dual engine-compressor system having a crankcase enclosing a crankshaft and having engine cylinder housings and compressor cylinder housings linearly disposed on opposite sides of the crankcase. Combustion pistons are reciprocatingly disposed in the engine cylinder housings and defines alternating combustion chambers on opposite sides of the pistons. Compressor pistons are reciprocatingly disposed in the compressor housings and define alternating low and high pressure compressor chambers on opposite sides of the compressor pistons. The compressor pistons underdo a 4-cycle process to drawn in, re-distribute, and then compress fluid. The compressor cylinder and piston has a series of one-way intakes and reed valves to selectively draw or push fluid in response to movement of the compressor piston. 1. A dual engine-compressor system , comprising:a crankcase enclosing a crankshaft;a first engine cylinder housing disposed on a first side of the crankcase and defining a first engine bore;a first combustion piston reciprocatingly disposed in the first engine bore and defining alternating combustion chambers within the first engine bore on opposite sides of the first combustion piston;a first compressor cylinder housing disposed on an opposite second side of the crankcase and defining a first compressor bore;a first compressor piston reciprocatingly disposed in the first compressor bore and defining alternating compressor chambers within the first compressor bore on opposite sides of the first compressor piston;a first combustion rod connecting the first combustion piston to a first scotch yoke on the crankshaft and a first compressor rod connecting the first compressor piston to the first scotch yoke, wherein the first combustion rod and the first compressor rod are oriented in a generally linear relationship;wherein the alternating compressor chambers in the first compressor bore comprise a low-pressure chamber and a high-pressure ...

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