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Небесная энциклопедия

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

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Мониторинг СМИ

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

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 775. Отображено 100.
12-01-2012 дата публикации

Control device for internal combustion engine

Номер: US20120010801A1
Автор: Kaoru Ohtsuka, Kiyonori Takahashi, Naoto Kato, Shinichi Soejima
Принадлежит: Toyota Motor Corp

In a control device which uses a specific physical quantity as a control variable of an internal combustion engine, and controls the internal combustion engine by manipulation of one or a plurality of actuators, switching of setting of a manipulation variable based on a required value of a physical quantity and setting of the manipulation variables by direct instruction to individual actuators is performed without generating discontinuity in a realized value of the physical quantity. When a manipulation variable instruction value directly designating a manipulation variable of an actuator is present, the manipulation variable instruction value is converted into a value of a physical quantity which is realized in the internal combustion engine by the operation quantity instruction value. When a deviation between a physical quantity conversion value converted from the manipulation variable instruction value and the physical quantity required value is within a predetermined range, switch of information for use in setting of the manipulation variable of each of the actuators is permitted.

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Номер записи: 1
28-06-2012 дата публикации

Internal Combustion Engine with Masking Wall the Curtain Area of the Intake Valves

Номер: US20120160198A1
Автор: Francesco PERNA, Mario DURANDO, Roberto Saretto
Принадлежит: Centro Ricerche Fiat SCpA

A spark ignition four stroke internal combustion engine includes two intake valves and two exhaust valves for each cylinder, arranged around a central spark plug and provided with means for varying the lift of the intake valves between a zero value and a maximum value H. A masking wall which masks the curtain area of the intake valves on one side facing towards the exhaust valves is provided in the combustion chamber associated to each cylinder. The axis of each intake valve is inclined with respect to the axis of the respective engine cylinder by an angle not exceeding 12° and the abovementioned masking wall has along the seat of each intake valve a height h in the direction parallel to the axis of the intake valve which is comprised between 0.1 and 0.5 times, extremes excluded, the maximum value H of the lift of the intake valves.

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Номер записи: 2
30-05-2013 дата публикации

Laser-induced spark ignition for an internal combustion engine

Номер: US20130133602A1
Автор: Joerg Engelhardt, Juergen Raimann, Martin Weinrotter, Pascal Woerner
Принадлежит: ROBERT BOSCH GMBH

A laser spark plug for an internal combustion engine includes at least one element for guiding, shaping and/or generating laser radiation, a combustion chamber window and a housing. The housing has, on the opposite side of the combustion chamber window from the element, an aperture for the passage of the laser radiation guided, shaped and/or generated by the element into a prechamber disposed at the end of the housing on the combustion chamber side. At least one overflow channel is provided for a fluid connection between an internal space of the prechamber and a combustion chamber surrounding the prechamber. When a fluid flows into the internal space of the prechamber through the overflow channel, a fluid flow is obtained that enters the interior of the aperture at a minimum angle ε, in particular measured with respect to the longitudinal axis of the laser spark plug, of 45°.

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Номер записи: 3
13-06-2013 дата публикации

Toroidal Combustion Chamber With Side Injection

Номер: US20130146021A1
Автор: Brehob Diana, Hofbauer Peter, Levy Robert
Принадлежит: EcoMotors, Inc.

A toroidal combustion chamber shape with side injectors is being developed for an opposed-piston engine. Favorable combustion characteristics of such configuration are transferred to a conventional engine, i.e., one with a combustion chamber delimited by a piston, a cylinder wall, and a cylinder head. At least one injector is disposed in the cylinder head at the periphery. The fuel is injected substantially along the plane of interface between the cylinder head and the cylinder block. The intake system is configured to provide a swirling flow in the combustion chamber. The fuel is injected in an angle that is displaced from the central axis of the cylinder and directed along the swirl. In some embodiments, a substantially torus-shaped volume is formed between the piston and the cylinder head when the piston is at top center. The injector or injectors spray fuel into the toroidally-shaped volume substantially tangent to the torus. 1. An internal combustion engine , comprising:a block defining a cylinder wall;a cylinder head affixed to the block, the cylinder head having two intake ports with first and second intake valves disposed therein and two exhaust ports with first and second exhaust valves disposed therein, the cylinder head further having an intake geometry that promotes a swirl flow of gases flowing through intake ports;a piston disposed within the cylinder wall with a central axis of the piston substantially coincident with a central axis of the cylinder wall with a top of the piston having a raised outer ring near the periphery of the piston that squishes gases inwardly toward the central axis when the piston travels toward the cylinder head; the injector has at least one orifice through which at least one fuel jet emanates when the orifice is open;', 'the injector is disposed in the cylinder wall with an axis of the injector angled such that a tip of the injector is pointed downward toward the block; and', 'the at least one fuel jet exits at an angle to ...

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Номер записи: 4
11-07-2013 дата публикации

HYBRID VEHICLE AND METHOD FOR CONTROLLING THE SAME

Номер: US20130174806A1
Автор: NAGAKURA Keisuke
Принадлежит:

A hybrid vehicle includes: an internal combustion engine having an in-cylinder injection valve directly injecting fuel into a combustion chamber and a port injection valve injecting fuel into an intake port; and a motor generator, and causes a torque equal to a user required torque to act on a drive shaft by controlling output torques of the engine and motor generator. When a misfire is not detected, the hybrid vehicle operates the engine at an engine operation point at which an engine power satisfies an engine required power in a first engine operation line. When a misfire is detected, the hybrid vehicle operates the engine at an engine operation point at which the engine power satisfies the engine required power in a second engine operation line, causes one of the injection valves to inject an entire amount of fuel, and determines which one is abnormal. 1. A hybrid vehicle comprising:an internal combustion engine including an in-cylinder injection valve and a port injection valve, the in-cylinder injection valve directly injecting fuel into a combustion chamber, and the port injection valve injecting fuel into an intake port that communicates with the combustion chamber;an electric motor;a power transmission mechanism configured to couple a drive shaft of the hybrid vehicle to the engine to transmit torque and to couple the drive shaft to the electric motor to transmit torque;a driving force control unit configured to control the engine and the electric motor such that a torque being determined on the basis of a user's accelerator operation amount is caused to act on the drive shaft, the torque being equal to a user required torque that is required to rotate the drive shaft; andan abnormality determination unit configured to determine whether a misfire occurs in the engine, whereinthe driving force control unit is configured to control the engine and the electric motor such that i) the engine is operated at an engine operation point that satisfies an engine ...

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Номер записи: 5
18-07-2013 дата публикации

HIGH-PRESSURE SPARK AND STRATIFICATION IGNITION DEVICE FOR AN INTERNAL COMBUSTION ENGINE

Номер: US20130180498A1
Автор: RABHI Vianney
Принадлежит:

The high-pressure spark and stratification ignition device () for an internal combustion engine () includes: 118911191018751417. High-pressure spark and stratification ignition device for an internal combustion engine () , the engine comprising a cylinder head () having at least one combustion chamber () into which there open an intake conduit () communicating with an intake plenum () and an exhaust conduit () with an exhaust manifold () and a catalytic converter () for treatment of the pollutants , the engine further comprising a pressurized lubrication circuit () , a cooling circuit () , and an ECU computer , characterized in that it comprises:{'b': 20', '21', '22', '23', '9', '1', '23', '24', '9, 'at least one low-lift stratification valve () kept in contact with a seat () by at least one spring (), this valve closing the end of a stratification conduit () and this end of the stratification conduit opening into the combustion chamber () of the internal combustion engine (), while the stratification conduit () connects at least one stratification chamber () to the combustion chamber ();'}{'b': 25', '20', '26', '9', '1, 'at least one spark plug () housed in the low-lift stratification valve (), this spark plug having projecting electrodes () positioned in the combustion chamber () of the engine ();'}{'b': 27', '1', '20', '21, 'at least one stratification actuator () controlled by the ECU computer of the internal combustion engine (), this actuator being responsible for lifting the low-lift stratification valve () from its seat (), keeping it open, and returning it to its seat;'}{'b': 28', '24', '29', '30', '31', '24, 'at least one stratification line () connecting the stratification chamber () to the outlet of a stratification compressor () whose inlet is connected directly or indirectly to a stratification atmospheric air supply conduit (), the line, the compressor, its inlet and outlet, and the supply conduit forming in combination an atmospheric air supply ...

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Номер записи: 6
18-07-2013 дата публикации

METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE HAVING MULTIPLE COMBUSTION CHAMBERS, AND INTERNAL COMBUSTION ENGINE HAVING MULTIPLE COMBUSTION CHAMBERS

Номер: US20130180511A1
Автор: Hess Werner, Ries-Mueller Klaus
Принадлежит:

In a method for operating an internal combustion engine having multiple combustion chambers and an injector for injecting fuel associated with at least one combustion chamber, an excess air factor which is individual for each combustion chamber is adjusted for the at least one combustion chamber, and a torque which is individual for each combustion chamber is ascertained for the at least one combustion chamber. A control period of the injector is adapted for the injector by ascertaining a valve opening period in such a way that tolerances of the injector are at least essentially compensated for with respect to a relationship between the control period and the valve opening period. 110-. (canceled)11. A method for operating an internal combustion engine having multiple combustion chambers , wherein an injector for injecting fuel is associated with at least one combustion chamber , the method comprising:adjusting an excess air factor for at least one combustion chamber, wherein each combustion chamber has an associated individual excess air factor;adapting, with the aid of an adaptation operation, a control period of the injector by one of detecting or ascertaining a valve opening period of the injector in such a way tolerances of the injector are at least essentially compensated for with respect to a relationship between the control period and the valve opening period;determining whether the adapting of the control period of the injector has reached a steady state; andascertaining a torque for the at least one combustion chamber, wherein each combustion chamber has an associated individual torque, wherein the individual torque for the at least one combustion chamber is not ascertained until the adapting of the control period of the injector has been determined to have reached a steady state.12. The method as recited in claim 11 , wherein in the adapting of the control period claim 11 , at least one valve delay time of the injector is ascertained by detecting and ...

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Номер записи: 7
08-08-2013 дата публикации

HIGH-PRESSURE SPARK-IGNITION AND STRATIFICATION DEVICE FOR AN INTERNAL COMBUSTION ENGINE

Номер: US20130199494A1
Автор: RABHI Vianney
Принадлежит:

A high-pressure spark-ignition and stratification device () for internal combustion engine () includes: 118911191018751417. High-pressure spark-ignition and stratification device for an internal combustion engine () , said engine comprising a cylinder head () having at least one combustion chamber () into which there open an intake conduit () communicating with an intake plenum () , and an exhaust conduit () communicating with an exhaust manifold () and a catalytic converter () for post-treatment of the pollutants , said engine further comprising a pressurized lubrication circuit () , a cooling circuit () and an ECU computer , characterized in that it comprises:{'b': 20', '8', '1', '21', '22', '23', '79', '24', '39', '9', '1', '39', '9', '26', '25', '8', '1', '9', '1, 'at least one stratification valve () housed in the cylinder head () of the internal combustion engine (), said valve being kept in contact with a seat () by at least one spring () and said valve closing a first end of at least one stratification conduit () which opens into a stratification prechamber () while a second end that said conduit comprises opens into a stratification chamber (), the latter being connected by at least one stratification injection conduit () to the combustion chamber () of the internal combustion engine (), said injection conduit () opening into said combustion chamber () near protruding electrodes () of a spark plug () fixed in the cylinder head () of the internal combustion engine (), said electrodes being positioned in the combustion chamber () of said engine ();'}{'b': 27', '1', '20', '21, 'at least one stratification actuator () controlled by the ECU computer of the internal combustion engine (), said actuator being responsible for lifting the stratification valve () off its seat (), keeping it open and returning it to its seat;'}{'b': 28', '79', '29', '30', '23', '31', '24, 'at least one stratification line () connecting the stratification prechamber () to the outlet of ...

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Номер записи: 8
15-08-2013 дата публикации

Hybrid Cycle Combustion Engine and Methods

Номер: US20130206102A1
Автор: Shkolnik Alexander C., Shkolnik Nikolay
Принадлежит: LIQUIDPISTON, INC.

An improved internal combustion engine of the four-stroke variable volume type operates by refraining from introducing substantial fuel into the working medium during the compression stroke until substantially maximum pressure of the working medium has been reached and utilizing at least one of the following processes: (a) causing combustion of fuel under substantially constant volume conditions; and (b) causing the power stroke to provide a larger volume to combustion products than the compression stroke provides to the working medium. Related methods are also provided. 1. An improved method of operating an internal combustion engine , of the type having a housing , a piston rotatably mounted in the housing and coupled to a shaft , and wherein occur phases of compression , combustion , and expansion in the housing , and wherein , in the compression phase , air introduced through an intake port into the housing is compressed by reducing volume of a compression chamber in the housing from an initial volume to a second volume that is less than the initial volume , and wherein the housing includes an exhaust port through which are passed gases resulting from combustion of fuel during the combustion phase , wherein the improvement provides improved performance in the combustion and expansion phases and comprises:providing a recess in the housing and configuring the piston so that, in the course of rotation of the piston, the piston at least in part covers the recess during the combustion phase to form a constant volume combustion chamber and during the expansion phase defines at least in part an expansion chamber volume that undergoes expansion of gases from combustion while the expansion chamber volume increases to a third volume that is larger than the initial volume;providing a fuel injector and a controller configured to cause injection of the fuel into the recess;causing combustion, in the combustion phase, of the fuel that has been introduced into the combustion ...

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Номер записи: 9
22-08-2013 дата публикации

METHOD OF OPERATING A COMBUSTION ENGINE PROVIDED WITH AT LEAST ONE FLUSHED PRECHAMBER

Номер: US20130213347A1
Автор: FIMML Wolfgang, Schaumberger Herbert, WINTER Hubert
Принадлежит: GE JENBACHER GMBH & CO OG

Method of operating a combustion engine provided with at least one flushed prechamber, wherein the at least one prechamber is connected to a main combustion chamber of the combustion engine and wherein—during a compression phase immediately preceding the ignition in the main combustion chamber—after ignition has taken place in the prechamber, in a first transfer phase gas transfers from the prechamber into the main combustion chamber, wherein after the first transfer phase, an at least two-phase, incompressible medium—preferably water—is introduced into the prechamber. 1. A method of operating a combustion engine provided with at least one flushed prechamber , wherein the at least one prechamber is connected to a main combustion chamber of the combustion engine and wherein—during a compression phase immediately preceding the ignition in the main combustion chamber—after ignition has taken place in the prechamber , in a first transfer phase gas transfers from the prechamber into the main combustion chamber , wherein after the first transfer phase an at least two-phase , incompressible medium—preferably water—is introduced into the prechamber.2. The method as claimed in claim 1 , wherein the medium is injected into the prechamber.3. The method as claimed in claim 1 , wherein the medium is introduced into the prechamber before the maximum pressure pis reached in the main combustion chamber.4. The method as claimed in claim 1 , wherein in at least one second transfer phase claim 1 , backflowing gas flows back from the main combustion chamber into the prechamber claim 1 , wherein the medium is introduced at least for a time during the at least one second transfer phase.5. The method as claimed in claim 1 , wherein the medium is introduced in a range of crankshaft angle from about 15 degrees of crankshaft angle before a top dead center of a piston delimiting the main combustion chamber to about 10 degrees of crankshaft angle after the top dead center of the piston ...

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Номер записи: 10
29-08-2013 дата публикации

RETROFIT GAS FUEL SUPPLY KIT RETROFITTABLE TO INTERNAL COMBUSTION ENGINE USING LIQUID FUEL

Номер: US20130220270A1
Автор: Imai Sakuichirou, NAKANO Shigeru
Принадлежит: VILLAGE ROAD CO., LTD.

The invention provides a gas fuel supply kit for the existing vehicle (vehicle mounting a gasoline engine, or a diesel engine), in order to use a gas fuel such as hydrogen after wards. 1. A post-installable type gas fuel supply kit to be installed in an internal combustion engine using liquid fuel as a fuel , characterized by comprising:a gas fuel injector for supplying the gas fuel to a combustion chamber of said internal combustion engine, or an intake path leading to said combustion chamber;an injector installing means for installing said gas fuel injector to a location which is a different location where an injector injecting the liquid fuel is installed; andan injector control unit which is separately provided from a previously provided engine control unit to a vehicle,wherein, said injector control unit comprises a program for controlling at least an injection amount, and an injection timing of the gas fuel at the gas fuel injector.2. A gas fuel supply kit used in a cylinder direct injection type internal combustion engine comprising a liquid fuel injector for directly injecting a liquid fuel to a cylinder , and an injector holding part for holding said liquid fuel injector in the cylinder , characterized by comprising:a liquid fuel injector installing means for relocating said liquid fuel injector to an intake manifold and for holding it there;a gas fuel injector, being installed to said injector holding part, for directly injecting the gas fuel to the cylinder; andan injector control unit which is separately provided from a previously provided engine control unit to a vehicle,wherein, said injector control unit comprises a program for acquiring injector pulse from said previously provided engine control unit to control at least an injection amount, and an injection timing of the gas fuel at the gas fuel injector.3. A gas fuel supply kit used in an internal combustion engine in which a liquid fuel injector for supplying a liquid fuel is installed to an intake ...

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Номер записи: 11
29-08-2013 дата публикации

DEVICE FOR INJECTING FUEL INTO THE COMBUSTION CHAMBER OF AN INTERNAL COMBUSTION ENGINE

Номер: US20130220271A1
Автор: Graspeuntner Christian, Guggenbichler Franz, Unterberger Gerhard
Принадлежит: ROBERT BOSCH GMBH

A device for injecting fuel into the combustion chamber of an internal combustion engine with at least one injector includes an injector body equipped with a high-pressure accumulator, a nozzle needle axially displaceably guided in the injector and surrounded by a nozzle chamber, a high-pressure line connecting the high-pressure accumulator to the nozzle chamber, and a resonator line arranged in parallel with the high-pressure line and communicating with the nozzle chamber and opening into the high-pressure accumulator via a resonator throttle. The resonator line and the high-pressure line, at least in their sections adjacent the high-pressure accumulator, are formed in a retaining body which, on its end face, is screwed into the accumulator pipe forming the high-pressure accumulator. 1. A device for injecting fuel into the combustion chamber of an internal combustion engine with at least one injector comprisingan injector body equipped with a high-pressure accumulator,a nozzle chamber;a nozzle needle axially displaceably guided in the injector and surrounded by the nozzle chamber,a high-pressure line connecting the high-pressure accumulator to the nozzle chamber;a resonator throttle; anda resonator line arranged in parallel with the high-pressure line and communicating with the nozzle chamber and opening into the high-pressure accumulator via the resonator throttle,wherein the resonator line and the high-pressure line, at least in their sections adjacent the high-pressure accumulator, are formed in a retaining body which, on its end face, is screwed into the accumulator pipe forming the high-pressure accumulator.2. A device according to claim 1 , wherein the accumulator pipe has a conical seating; and the retaining body claim 1 , on its end face claim 1 , comprises a conical seating which cooperates with the conical seating on the accumulator pipe for sealing the connection between the retaining body and the accumulator pipe.3. A device according to claim 2 , ...

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Номер записи: 12
05-09-2013 дата публикации

Two Engine System With A Gaseous Fuel Stored In Liquefied Form

Номер: US20130228151A1
Автор: Dunn Mark E., LeBlanc Valerie N.
Принадлежит:

A gaseous fuelled two-engine system comprises a high pressure direct injection engine as the main power source and an auxiliary fumigated engine that can be fuelled with vapor removed from a storage tank that stores the gaseous fuel in liquefied form at cryogenic temperatures. The fuel supply system comprises a cryogenic pump for raising the pressure of the fuel to the injection pressure needed for the high pressure direct injection engine, and the cryogenic pump is powered by the auxiliary fumigated engine. 1. A gaseous fuelled two-engine system comprising:(a) a storage tank that is thermally insulated for holding a gaseous fuel in liquefied form;(b) a first outlet associated with a lower portion of said storage tank for delivering said gaseous fuel in liquefied form;(c) a second outlet associated with an upper portion of said storage tank for delivering said gaseous fuel in vaporized form;(d) a cryogenic pump comprising a suction inlet fluidly connected to said first outlet;(e) a drive for said cryogenic pump comprising a power supply;(f) a vaporizer having a fuel inlet fluidly connected to a discharge outlet of said cryogenic pump;(g) a first engine that is a direct injection gaseous-fuelled internal combustion engine comprising a fuel injector for injecting said gaseous fuel directly into a combustion chamber at pressures greater than 200 bar, said fuel injector receiving said gaseous fuel through a pipe that is in fluid communication with a vaporizer fuel outlet; and(h) a second engine that is a fumigated gaseous-fuelled internal combustion engine comprising a fuel injector for injecting said gaseous fuel into an intake air manifold that delivers intake air to a combustion chamber of said second engine, wherein said gaseous fuel that is supplied to said second engine is delivered through a pipe that is in fluid communication with said second outlet, and wherein said second engine is said power supply for said cryogenic pump drive.2. The gaseous fuelled two- ...

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Номер записи: 13
12-09-2013 дата публикации

APPLIED-IGNITION INTERNAL COMBUSTION ENGINE WITH CATALYTICALLY COATED INJECTION DEVICE, AND METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE OF SAID TYPE

Номер: US20130233275A1
Автор: Berkemeier Oliver, Grieser Klemens, Hohenboeken Kay, Wojahn Jens
Принадлежит: FORD GLOBAL TECHNOLOGIES, LLC

Systems and methods are provided for reducing coking residues on an injection device of an applied-ignition, direct injection engine. An example system comprises an injection device; an electric heating device integrated with the injection device; a catalytic coating on a surface of the injection device; and a controller suitable to initiate a cleaning mode of the injection device wherein the electric heating device raises the temperature of the injection device. Heating the injection device allows coking residues on the injection device to oxidize in the presence of the catalytic coating. 1. An engine comprising:at least one cylinder;an ignition device for initiating applied-ignition;an injection device for directly injecting fuel into a combustion chamber of the at least one cylinder;a catalytic coating on at least a region of the injection device; andan electric heating device to heat the injection device.2. The engine as claimed in claim 1 , wherein less than one half of a surface of the injection device which projects into the combustion chamber has the catalytic coating.3. The engine as claimed in claim 1 , wherein less than one quarter of the surface of the injection device which projects into the combustion chamber has the catalytic coating.4. The engine as claimed in claim 1 , wherein less than one sixth of the surface of the injection device which projects into the combustion chamber has the catalytic coating.5. The engine as claimed in claim 1 , wherein the electric heating device is integrated into the injection device in such a way that a component temperature is increased substantially in a region of the catalytic coating.6. The engine as claimed in claim 1 , wherein the injection device is an injection nozzle.7. A method for an engine comprising:heating an injection device in a region of a catalytic coating on the injection device using an electric heating device.8. The method as claimed in claim 7 , wherein heating the injection device is initiated ...

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Номер записи: 14
10-10-2013 дата публикации

DIRECT-INJECTION INTERNAL COMBUSTION ENGINE

Номер: US20130263819A1
Автор: Mori Sachio
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

An object of the present invention is to provide a direct-injection internal combustion engine capable of suppressing the occurrence of knocking and providing increased combustion stability. The internal combustion includes a supercharger for supercharging intake air that flows into the internal combustion engine, and a fuel injection valve for directly injecting fuel into a combustion chamber in the internal combustion engine. After an exhaust valve and an intake valve are opened during an exhaust stroke, the intake valve and the exhaust valve close at a timing advanced from an intake top dead center, and then the intake valve opens at a timing retarded from the intake top dead center during an intake stroke. The fuel injection valve injects the fuel during an interval between the intake top dead center and the retarded timing. 1. A direct-injection internal combustion engine comprising:a supercharger for supercharging intake air that flows into the internal combustion engine;a fuel injection valve for directly injecting fuel into a combustion chamber in the internal combustion engine;valve control means for closing an intake valve and an exhaust valve at a an advanced timing advanced from an intake top dead center after the exhaust valve and the intake valve are opened during an exhaust stroke and opening the intake valve at a retarded timing retarded from the intake top dead center during an intake stroke; andinjection control means for causing the fuel injection valve to inject the fuel during an interval between the intake top dead center and the retarded timing.2. The direct-injection internal combustion engine according to claim , wherein the cubic volume of the combustion chamber at the advanced timing is equal to the cubic volume of the combustion chamber at the retarded timing.3. The direct-injection internal combustion engine according to claim 1 , wherein the internal combustion engine is a lean-burn engine.4. The direct-injection internal combustion ...

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Номер записи: 15
10-10-2013 дата публикации

INTEGRATED LEAN BURN STABILIZERS

Номер: US20130263820A1
Автор: Jr. Robert C., Yu, Yu Ming-Li Hsu, Yu Robert C.
Принадлежит:

An integrated lean burn stabilizer (ILBS) for initiating combustion in an internal combustion engine by generating and introducing active free radicals into a combustion chamber is provided. Engines equipped with the ILBS can achieve a fuel efficient clean combustion processes with a lean and/or diluted mixture otherwise incapable of auto ignition and provide a controlled start of combustion, in conjunction with early in-cylinder direct injection, late diesel-like in-cylinder direct injection, and mixed fuel functions allowing control of the composition and stratification of the mixture. Controlled aspects of the fuel mixture include the equivalent ratio and fuel reactivity combinations inside the main combustion chamber, thereby allowing the start of combustion and duration of combustion inside the main combustion chamber be optimized for maximum cycle efficiency and specific power output while minimizing emissions. The early direct injection function of ILBS can also address the potential issue of homogeneity of port injected low-volatility fuel mixture entering the combustion chamber. 1. An integrated lean burn stabilizer (ILBS) for an internal combustion engine comprising: a housing having an interior chamber capable of receiving a ceramic sleeve and a nozzle adapted to provide at least one orifice for movement of a fuel/air mixture between the stabilizer and a combustion chamber , a plunger within the interior chamber , the plunger capable of extension and retraction to provide a reciprocal motion , such that when retracted , the plunger defines a single ILBS chamber within the interior of the ILBS nozzle ,wherein upon retraction of the plunger, a fuel/air mixture present within the combustion chamber is withdrawn through the nozzle into the ILBS chamber, and upon extension of the plunger, the fuel/air mixture present therein is compressed, forming and ejecting at least one active radical plume through the at least one orifice into the combustion chamber and ...

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Номер записи: 16
28-11-2013 дата публикации

Method and Devices for Process intensified Wall Integrated Operations for IC Engines

Номер: US20130312699A1
Автор: Segawa Enock N
Принадлежит:

Many IC engine inefficiencies are linked to the relatively low mixture formation rates of current injection methods. Process intensification (PI) is excellent at high mixture formation rates, high mass transfer rates, and short residence times, therefore a wall integrated injection method and device featuring PI has been provided. It allows increased number of injection sites and interfacial surface area between fluid jets and the volume of the squash area, hence high mixture formation rates shorter Liquid Lengths and the use of micro nozzles to further intensify the mixing process by locally mixing fuel and oxidant. This allows high EGR and low compression ratios and better control of HCCI start of ignition. PI effectively achieves thermo and species stratification for extending the load range of the HCCI engine while permitting effective water addition for reciprocating and turbine for lower exhaust heat and less fuel burned hence less CO2 emissions. 1. An intensified fluid injection device comprising:[a.] an annular body disposed in a combustion chamber, with an inside diameter aligned with that of the combustion chamber wherein said body is disposed;[b.] at least one annular fluid passage disposed in said annular body; and[c.] a multiplicity of fluid atomizing devices disposed on the inside diameter of said annular body and said fluid atomizing devices being in fluid communication with said annular fluid passage and being circumferentially arranged along the inside diameter of said annular body such that travel of fluid jets issuing therefrom advance towards a center of the combustion chamber, thereby increasing a number of injection sites and evenly spreading them around the cylinder wall;whereby a fluid issuing from the fluid atomizing devices is instantaneously transferred to and atomized in the combustion chamber, and the fluid's liquid phase is concentrated in the center of the combustion chamber and thereby an interfacial surface area between the fluid and ...

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Номер записи: 17
28-11-2013 дата публикации

RICH-LEAN BURNER

Номер: US20130312700A1
Автор: Oda Hiroshi
Принадлежит: Paloma Co., Ltd.

A rich-lean burner includes an inner cylinder to which lean gas, which is a mixture of gas and combustion air, is supplied, and an outer cylinder that is coaxially disposed around the inner cylinder such that rich gas, which is a mixture of gas and combustion air, is supplied between the inner cylinder and the outer cylinder. A burner head, which has small holes and whose diameter decreases toward the leading end, is provided on an opening of the inner cylinder. The burner head is obtained by forming a perforated metal, in which the small holes are arranged in a zigzag manner, into a conical shape. An interval between each of the small holes is two to three times the diameter of the small holes. The total area of the small holes is larger than the area of an upper end opening of an upper inner cylinder. 1. A rich-lean burner comprising:an inner cylinder to which lean gas is supplied, the lean gas being a mixture of gas and combustion air; andan outer cylinder that is coaxially disposed around the inner cylinder such that rich gas is supplied between the inner cylinder and the outer cylinder, the rich gas being a mixture of gas and combustion air,whereina protruding body, which has a plurality of small holes and whose diameter decreases toward a leading end of the protruding body, is provided on an opening of the inner cylinder.2. The rich-lean burner according to claim 1 , whereina total area or the small holes is equal to or more than an area of the opening of the inner cylinder.3. The rich-lean burner according to claim 1 , whereinan intermediate cylinder, which is communicatively connected with the inside of the inner cylinder and the lean gas is supplied thereto, is coaxially provided on an outer periphery of the inner cylinder, on an inner side of the outer cylinder.4. The rich-lean burner according to claim 2 , whereinan intermediate cylinder, which is communicatively connected with the inside of the inner cylinder and the lean gas is supplied thereto, is ...

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Номер записи: 18
28-11-2013 дата публикации

FUEL MANAGEMENT SYSTEM FOR VARIABLE ETHANOL OCTANE ENHANCEMENT OF GASOLINE ENGINES

Номер: US20130312701A1
Автор: Bromberg Leslie, Cohn Daniel R., Heywood John B.
Принадлежит: Massachusetts Institute of Technology

Fuel management system for efficient operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder of the engine. A fuel management microprocessor system controls injection of the anti-knock agent so as to control knock and minimize that amount of the anti-knock agent that is used in a drive cycle. It is preferred that the anti-knock agent is ethanol. The use of ethanol can be further minimized by injection in a non-uniform manner within a cylinder. The ethanol injection suppresses knock so that higher compression ratio and/or engine downsizing from increased turbocharging or supercharging can be used to increase the efficiency of the engine 132-. (canceled)33. A turbocharged spark ignition engine that is fueled with a first fueling system that introduces fuel into a region outside of the cylinders and a second fueling system that injects fuel as a liquid directly into the cylinders;and where as torque is increased a fuel management system increases the amount of fuel provided by the second fueling system relative to fuel provided by the first fueling system so as to avoid knock;and where when the engine is operated at maximum torque the fuel air ratio is substantially stoichiometric and only the second fueling system is used;and where as the torque is decreased below a first selected value of torque only the first fueling system is used.34. The turbocharged spark ignition engine of where the amount of fuel provided the second fueling system relative to the amount of fuel provided by the first fueling system is determined by closed loop control using a knock detector.35. The turbocharged spark ignition engine of where the first selected value of torque is determined by closed loop control using a knock detector.36. The turbocharged spark ignition engine of claim 33 , where open loop control is used to determine the amount of fuel provided by the second fueling system to the fuel provided by the first ...

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Номер записи: 19
19-12-2013 дата публикации

INTERNAL COMBUSTION ENGINE HAVING A DIRECT INJECTION SYSTEM AND HAVING A PORT FUEL INJECTION SYSTEM

Номер: US20130333660A1
Автор: Bartsch Guenter, Berkemeier Oliver
Принадлежит:

A system and methods are provided to deactivate a cam driven fuel pump. The system comprises a direct fuel injection system; a port fuel injection system; a pump for the direct injection system driven by a cam, wherein the pump can be activated and deactivated as a function of the activation of the direct injection system. Deactivating a pump when no fuel is pumped through it minimizes wear on pump components and increases efficiency. 1. An internal combustion engine comprising:a direct fuel injection system;a port fuel injection system;a pump for the direct fuel injection system driven by a cam,a controller including memory holding instructions in memory to activate and deactivate the pump based on activation status of the direct fuel injection system.2. The engine as claimed in claim 1 , wherein the cam driving the pump is arranged on a crankshaft.3. The engine as claimed in claim 1 , wherein the cam driving the pump is arranged on an overhead camshaft.4. The engine as claimed in claim 1 , wherein the pump is claim 1 , for deactivation claim 1 , mechanically disengaged from rotary motion of the cam.5. The engine as claimed in claim 4 , further comprising a lost mechanism to mechanically disengage the pump from a drive system.6. The engine as claimed in claim 1 , wherein the pump and the port fuel injection system and a pump of the port fuel injection system are connected to a common tank for fuel.7. A method comprising:deactivating a pump for a direct fuel injection system by decoupling rotary motion of a cam powering the pump when the direct fuel injection system is deactivated;anticipating the activity of the direct fuel injection system; andactivating the pump when activation of the direct fuel injection system is anticipated.8. The method as claimed in claim 7 , wherein activating the pump occurs prior to activating the direct fuel injection system.9. The method as claimed in claim 7 , wherein decoupling rotary motion of the cam is by a lost motion mechanism. ...

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Номер записи: 20
19-12-2013 дата публикации

METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE

Номер: US20130333661A1
Автор: Fischer Juergen
Принадлежит: DAIMLER AG

In a method for operating an internal combustion engine with a plurality of combustion chambers, wherein a discrepancy between an actual operating performance and a target operating performance of at least one of the combustion chambers is detected, the ignition point is shifted in only the combustion chamber that has the discrepancy in order to influence combustion so as to compensate for the discrepancy. 11214161812141618. A method for operating an internal combustion engine with a plurality of combustion chambers ( , , , ) , wherein a discrepancy between an actual operating performance and a target operating performance in at least one of the combustion chambers ( , , , ) is detected , said method comprising the steps of:{'b': 12', '14', '16', '18, 'performing, in order to compensate for the discrepancy, at least one measure, which influences combustion in only the combustion chamber (,, , ) which has the discrepancy, and'}{'b': 10', '30', '30', '12', '14', '16', '18', '36, 'during a lean operation (stratified operation/homogeneous stratified operation) of the internal combustion engine () compensating for the discrepancy by shifting an ignition point (, ′) of the combustion chamber (, , , ) that has the discrepancy so as to be at a different point from a top ignition dead center position ().'}224283412141618. The method according to claim 1 , wherein to compensate for the discrepancy claim 1 , at least one measure is carried out claim 1 , which influences the injection of an amount ( claim 1 , claim 1 , ) of fuel injected into the combustion chamber ( claim 1 , claim 1 , claim 1 , ) that has the discrepancy.324283412141618. The method according to claim 2 , wherein to compensate for the discrepancy claim 2 , the amount ( claim 2 , claim 2 , ) of fuel which is injected claim 2 , into the combustion chamber ( claim 2 , claim 2 , claim 2 , ) that has the discrepancy is adjusted.424283412141618. The method according to claim 2 , wherein to compensate for the ...

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Номер записи: 21
02-01-2014 дата публикации

METHOD OF OPERATING AN INTERNAL COMBUSTION ENGINE

Номер: US20140000553A1
Автор: DIELER Torsten, Haase Dirk, Herweg Ruediger
Принадлежит: DAIMLER AG

An operating mode of an internal combustion engine, in particular a directly injected internal combustion engine featuring a plurality of combustion chambers, in particular for a direct-injection gasoline engine for a motor vehicle, an operating mode having at least in part low-NOx combustion (NAV) and having a plurality of partial operating modes wherein it is switched between another partial operating mode and a NAV partial operating mode, wherein in the case of said NAV partial operating mode, at an ignition point (ZZP) a largely homogeneous, lean fuel/exhaust gas/air mixture having a combustion air ratio of λ≧1 is spark ignited in the respective combustion chamber by means of an ignition device, and where a flame front combustion (FFV) initiated by the spark-ignition transitions to a controlled auto-ignition (RZV). 1. Operating mode for an , in particular direct-injection , internal combustion engine with exhaust gas recirculation , in particular for a direct injection gasoline engine , comprising:wherein a RZV partial operating mode is implemented in a region of the engine characteristics map having low to medium speed and/or low to medium load, said RZV partial operating mode having a lean fuel/exhaust gas/air mixture that is ignited by compression ignition and combusts by controlled auto-ignition (RZV),wherein the region of the engine characteristics map with compression ignition is bordered at higher load by another region of the engine characteristics map in which low-NOx combustion (NAV) is performed,wherein at an ignition point (ZZP) a homogeneous, lean fuel/exhaust gas/air mixture with combustion air ratio λ≧1 in a given combustion chamber of the internal combustion engine is spark ignited by means of an ignition device,wherein a flame front combustion (FFV) initiated by the spark ignition transitions to controlled auto-ignition (RZV),wherein it is switched between at least one other partial operating mode and a NAV partial operating mode wherein a ...

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Номер записи: 22
02-01-2014 дата публикации

CONTROL DEVICE FOR MULTI-CYLINDER INTERNAL COMBUSTION ENGINE

Номер: US20140000554A1
Автор: Katou Naozumi, Takaki Daisuke, TSUYUKI Takeshi
Принадлежит:

Provided is a control device for a multi-cylinder internal combustion engine, including: a supercharger to be driven by exhaust gas energy; and a fuel injection control unit, in which the fuel injection control unit sets a fuel injection amount for one cylinder so that an air/fuel ratio in the one cylinder is richer than a theoretical air/fuel ratio, and exhaust gas exhausted when the one cylinder is in an exhaust stroke and scavenging gas scavenged during a valve overlap period from another cylinder which is in an intake stroke when the one cylinder is in the exhaust stroke are mixed in an exhaust pipe so as to attain an air/fuel ratio facilitating combustion. 1. A control device for a multi-cylinder internal combustion engine , comprising:a supercharger to be driven by exhaust gas energy; anda fuel injection control unit,wherein the fuel injection control unit sets a fuel injection amount for one cylinder so that an air/fuel ratio in the one cylinder is richer than a theoretical air/fuel ratio, and exhaust gas exhausted when the one cylinder is in an exhaust stroke and scavenging gas scavenged during a valve overlap period from another cylinder which is in an intake stroke when the one cylinder is in the exhaust stroke are mixed in an exhaust pipe so as to attain a desired air/fuel ratio.2. The control device for a multi-cylinder internal combustion engine according to claim 1 , wherein the fuel injection control unit sets the fuel injection amount for the one cylinder based on a new air amount when an intake stroke of the one cylinder finishes and a new air amount in the scavenging gas scavenged from the another cylinder which is in the intake stroke when the one cylinder is in the exhaust stroke.3. The control device for a multi-cylinder internal combustion engine according to claim 1 , wherein the fuel injection control unit provides such control that the fuel injection amount is injected by a fuel injection once in one stroke.4. The control device for a multi- ...

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Номер записи: 23
16-01-2014 дата публикации

METHOD AND DEVICE FOR CONTROLLING A FOUR-STROKE INTERNAL COMBUSTION ENGINE

Номер: US20140014062A1
Автор: Yacoub Yasser Mohamed sayed
Принадлежит:

A system is disclosed for a four-stroke internal combustion engine comprising: at least two cylinders; a fuel direct injection device; a variable valve timing system; an engine controller to control valve timing according to load; wherein, below a lower load threshold, a first cylinder is deactivated, an injection of fuel takes place into a combustion chamber of the first cylinder and an inlet valve of the first cylinder is open during a compression stroke. The opening of the inlet valve during a compression stroke of the first cylinder when deactivated allows the substantially homogenous air-fuel mixture therein to escape into the intake manifold and be made available to the second and active cylinder. 2. The system as claimed in claim 1 , wherein the inlet valve of the first cylinder is open at least temporarily at the same time as an inlet valve of a second cylinder during an intake stroke of the second cylinder.3. The system as claimed in claim 1 , wherein the inlet valve of the first cylinder is open for substantially an entire duration of the compression stroke of the first cylinder.4. The system as claimed in claim 1 , wherein an injection of fuel takes place during an expansion stroke of the first cylinder.5. The system as claimed in claim 1 , wherein the first cylinder is deactivated by discontinuing spark ignition.6. The system as claimed in claim 1 , further comprising a second cylinder which is active claim 1 , even below a lower load threshold claim 1 , wherein the inlet valve of the second cylinder is closed during a compression stroke.7. The system as claim in claim 1 , wherein the at least two cylinders comprises four cylinders.8. The system as claimed in claim 7 , wherein the first cylinder comprises a first and a third cylinder in a firing order and a second cylinder comprises a second and fourth cylinder claim 7 , such that first and the second cylinders are repeated twice in a four cylinder engine.9. A method for an engine claim 7 , comprising: ...

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Номер записи: 24
20-02-2014 дата публикации

Internal combustion engine

Номер: US20140048036A1
Автор: Bernd Lamparter, Christian Krauser, Herbert Zoeller, Thomas Koch
Принадлежит: DAIMLER AG

An internal combustion engine ( 1 ), preferably for a motor vehicle, having at least one cylinder ( 2 ) which encloses a combustion chamber ( 3 ) and in which a piston ( 4 ) is situated in such a way that it may perform a stroke movement, and having at least one injector ( 5 ) per cylinder for injecting fuel into the combustion chamber ( 3 ). The respective injector ( 5 ) has multiple injection openings ( 9, 10 ) through which the fuel exits from the injector ( 5 ) and enters into the combustion chamber ( 3 ). To be able to react more fuel, first injection openings ( 9 ) and second injection openings ( 10 ) are situated relative to one another in such a way that first injection jets ( 15 ) from the first injection openings ( 9 ) reach the piston ( 4 ) essentially without contacting second injection jets ( 18 ) from the second injection openings ( 10 ).

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Номер записи: 25
01-01-2015 дата публикации

MODEL-BASED TRANSIENT FUEL INJECTION TIMING CONTROL METHODOLOGY

Номер: US20150000632A1
Автор: Haskara Ibrahim, Wang Yue-Yun
Принадлежит:

A method for controlling a direct-injection internal combustion engine includes monitoring internal combustion engine operational parameters, determining a start of injection in response to the engine operational parameters, monitoring an intake air flow comprising a residual gas component, monitoring an exhaust gas flow, monitoring a fuel flow, determining a time constant corresponding to an intake air flow reaction time based upon the intake air flow, the exhaust gas flow, and the fuel flow, modifying the start of injection with the time constant, and operating the engine subject to the modified start of injection. 1. Method for controlling a direct-injection internal combustion engine , comprising:monitoring internal combustion engine operational parameters and determining a start of injection in response to the engine operational parameters;monitoring an operator torque request and detecting a fast transient from the operator torque request;monitoring an intake air flow comprising a residual gas component;monitoring an exhaust gas flow;monitoring a fuel flow;monitoring an engine speed;monitoring a volumetric efficiency of the engine;determining a time constant predicated upon the monitored fast transient and corresponding to an intake air flow reaction time based upon the intake air flow, the exhaust gas flow, the fuel flow, the engine speed, and the volumetric efficiency of the engine;modifying the start of injection with the time constant predicated upon the monitored fast transient; andoperating the engine subject to the modified start of injection.2. The method of claim 1 , wherein monitoring an intake air flow comprising the residual gas component comprises determining the residual gas component within the intake air flow resulting from an internal exhaust gas recirculation.3. The method of claim 1 , wherein monitoring an intake air flow comprising the residual gas component comprises determining the residual gas component within the intake air flow ...

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Номер записи: 26
05-01-2017 дата публикации

CONTROL SYSTEM FOR SPARK-IGNITION INTERNAL COMBUSTION ENGINE

Номер: US20170002724A1
Автор: KIMURA Koshiro
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A control system for a spark-ignition internal combustion engine configured to produce tumble flow in a cylinder is provided. The spark-ignition internal combustion engine includes an ignition plug configured to ignite an air-fuel mixture in the cylinder. The control system includes a tumble flow rate controller configured to change a position of a vortex center of the tumble flow as viewed in a direction of a center axis of the cylinder, so as to control a flow rate of the tumble flow around the ignition plug at the ignition timing of the ignition plug. 1. A control system for a spark-ignition internal combustion engine , the spark-ignition internal combustion engine configured to produce tumble flow in a cylinder , and the spark-ignition internal combustion engine including an ignition plug configured to ignite an air-fuel mixture in the cylinder , the control system comprising:a tumble flow rate controller configured to change a position of a vortex center of the tumble flow in a direction of a center axis of the cylinder, so as to control a flow rate of the tumble flow around the ignition plug at the ignition timing of the ignition plug.2. The control system according to claim 1 , whereinthe tumble flow rate controller is configured to increase the flow rate of a part of the tumble flow at a first point in time, the first point in time being determined such that said part of the tumble flow reaches a position opposite to the ignition plug with respect to the vortex center of the tumble flow, when the ignition timing comes after the flow rate of said part of the tumble flow is increased.3. The control system according to claim 2 , wherein:the internal combustion engine includes a fuel injection valve configured to inject a fuel into the cylinder such that the injected fuel flows along the tumble flow; andthe tumble flow rate controller is configured to cause the fuel injection valve to inject the fuel during an intake stroke or a compression stroke, so as to ...

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Номер записи: 27
09-01-2020 дата публикации

CONTROLLER AND CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE

Номер: US20200011261A1
Автор: Okubo Naoya
Принадлежит:

A controller for an internal combustion engine is configured to execute: a process of switching the injection mode according to an engine operational state; an anomaly determination process of determining whether there is an anomaly in the injection system that is implementing a single injection mode during implementation of the single injection mode; a provisional determination process of provisionally determining whether there may be an anomaly in the injection system that is implementing the single injection mode during the implementation of the single injection mode; and an idle determination process of, if it is determined that there is an anomaly in the provisional determination process, prohibiting the automatic stop and executing, during an idle operation, the anomaly determination process by implementing an injection mode that uses only the injection system provisionally determined to have an anomaly in the provisional determination process. 1. A controller for an internal combustion engine , the engine including a direct injection system having a direct injection valve , which injects fuel into a combustion chamber , and a port injection system having a port injection valve , which injects fuel to an intake port , the engine being configured to perform automatic stop , the controller being configured toexecute a process of switching, according to an engine operational state, among a direct injection mode, in which fuel is injected only from the direct injection valve, a port injection mode, in which fuel is injected only from the port injection valve, and a dual injection mode, in which fuel is injected from both the direct injection valve and the port injection valve,when the direct injection mode and the port injection mode are each defined as a single injection mode, execute an anomaly determination process of determining whether there is an anomaly in the injection system that is implementing the single injection mode during implementation of the ...

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Номер записи: 28
17-04-2014 дата публикации

INTERNAL COMBUSTION ENGINE WHICH CAN BE OPERATED WITH LIQUID AND WITH GASEOUS FUEL AND A METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE OF THIS KIND

Номер: US20140102405A1
Автор: Kramer Ulrich, Weber Carsten, Wirth Martin
Принадлежит: FORD GLOBAL TECHNOLOGIES, LLC

The application describes a system for an engine comprising a direct injection nozzle for injecting gaseous fuel into a cylinder of an engine in a second operating mode; an intake injection nozzle for injecting liquid fuel into an intake port of the engine in a first operating mode; and a valve gear suitable to adjust timing of opening and closing of an inlet valve. Preferential injection of a gaseous fuel such as compressed natural gas directly into the cylinder increases efficiency and allows for reduced heat exposure to the lesser used liquid gas injectors mounted in the intake port, reducing coking of these injectors. 1. An internal combustion engine comprising:at least one cylinder;at least one inlet port;a direct injection system for introducing gaseous fuel into the at least one cylinder in a second operating mode; andan intake pipe injection for introducing liquid fuel into an intake system in a first operating mode.2. The internal combustion engine as claimed in claim 1 , further comprising a valve gear comprising at least one inlet valve for the at least one inlet port and a valve actuating device for actuating the at least one inlet valve.3. The internal combustion engine as claimed in claim 2 , wherein the valve gear can adjust a time at which the at least one inlet valve closes.4. The internal combustion engine as claimed in claim 2 , wherein the valve gear can adjust the time at which the at least one inlet valve closes without changing an opening time at which the at least one inlet valve opens.5. The internal combustion engine as claimed in claim 1 , further comprising a compression ratio of the at least one cylinder which can be modified.6. The internal combustion engine as claimed in claim 5 , wherein the compression ratio is modified by altering the time at which the least one inlet valve opens and closes.7. The internal combustion engine as claimed in claim 5 , wherein the compression falls between 10 and 16.8. The internal combustion engine as ...

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Номер записи: 29
17-04-2014 дата публикации

INTEGRATED FUEL INJECTOR IGNITERS CONFIGURED TO INJECT MULTIPLE FUELS AND/OR COOLANTS AND ASSOCIATED METHODS OF USE AND MANUFACTURE

Номер: US20140102407A1
Автор: Larsen Melvin James, McAlister Roy Edward
Принадлежит: McAlister Technologies, LLC

Embodiments of injectors configured for adaptively injecting multiple different fuels and coolants into a combustion chamber, and for igniting the different fuels, are disclosed herein. An injector according to one embodiment includes a body having a first end portion and a second end portion. The injector further includes a first flow channel extending through the body, and a second flow channel extending through the body that is separate from the first flow channel and electrically isolated from the first flow channel. The first flow channel is configured to receive a first fuel, and the second flow channel is configured to receive at least one of a second fuel and a coolant. The injector further comprises a valve carried by the body that is movable between a closed position and an open position to introduce at least one of the second fuel and the coolant into a combustion chamber. 1. An injector comprising: a base portion configured to receive a first fuel and at least one of a second fuel and a coolant into the body; and', 'a nozzle portion coupled to the base portion, wherein the nozzle portion is configured to be positioned proximate to a combustion chamber for injecting the first fuel and at least one of the second fuel and the coolant into the combustion chamber;, 'an injector body including—'}a valve seal positioned at or proximate to the nozzle portion;an ignition rod extending from the base portion to the nozzle portion;a valve coaxially disposed over at least a portion of the ignition rod, wherein the valve includes a sealing head and moves between an open position in which the sealing head is spaced apart from the valve seal, and a closed position in which the sealing head at least partially contacts the valve seal;a first flow channel extending longitudinally through a center portion of the ignition rod, wherein the first flow channel is configured to deliver the first fuel to the nozzle portion;a second flow channel fluidly separated from the first ...

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Номер записи: 30
25-01-2018 дата публикации

PISTON

Номер: US20180023454A1
Автор: Chang David Yu-Zhang, Gong Weidong
Принадлежит: CATERPILLAR INC.

A piston for an engine is provided. The piston includes a body having a crown disposed about a central axis. The crown includes an inner circumference and an outer circumference. The piston includes a central chamber transversely disposed within the body and recessed with respect to the crown. The piston includes a central mound disposed within the central chamber about the central axis. The piston also includes a bowl extending from the central mound towards the crown. The piston further includes a passageway provided on the inner circumference of the crown. The passageway includes a slot defined by a first surface inclined at a first angle with respect to the central axis. The slot is adapted to allow flow of a fuel from the central chamber towards the outer circumference of the crown. 1. A piston for an engine , the piston comprising:a body having a crown disposed about a central axis, the crown having an inner circumference and an outer circumference;a central chamber transversely disposed within the body and recessed with respect to the crown;a central mound disposed within the central chamber about the central axis;a bowl extending from the central mound towards the crown; anda passageway provided on the inner circumference of the crown, the passageway including a slot defined by a first surface inclined at a first angle with respect to the central axis, wherein the slot is adapted to allow flow of a fuel from the central chamber towards the outer circumference of the crown.2. The piston of further including a plurality of the slots provided in a spaced apart arrangement from each other along the inner circumference of the crown.3. The piston of claim 1 , wherein the passageway further includes a second surface and a third surface such that the slot defined by the first surface claim 1 , the second surface claim 1 , and the third surface has a triangular configuration.4. The piston of claim 1 , wherein the first angle is between 30° and 60°.5. The piston of ...

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Номер записи: 31
05-02-2015 дата публикации

ENGINE COMBUSTION CONTROL AT LOW LOADS VIA FUEL REACTIVITY STRATIFICATION

Номер: US20150034045A1
Автор: Hanson Reed M., Kokjohn Sage, Reitz Rolf Deneys, Splitter Derek A.
Принадлежит:

A compression ignition (diesel) engine uses two or more fuel charges during a combustion cycle, with the fuel charges having two or more reactivities (e.g., different cetane numbers), in order to control the timing and duration of combustion. By appropriately choosing the reactivities of the charges, their relative amounts, and their timing, combustion can be tailored to achieve optimal power output (and thus fuel efficiency), at controlled temperatures (and thus controlled NOx), and with controlled equivalence ratios (and thus controlled soot). At low load and no load (idling) conditions, the aforementioned results are attained by restricting airflow to the combustion chamber during the intake stroke (as by throttling the incoming air at or prior to the combustion chamber's intake port) so that the cylinder air pressure is below ambient pressure at the start of the compression stroke. 2. The method of wherein the fuel and the material define a stratified distribution of fuel reactivity within the combustion chamber during the engine combustion cycle claim 1 , with regions of highest fuel reactivity being spaced from regions of lowest reactivity.3. The method of wherein:a. one or more of the fuel and the material are supplied into the combustion chamber in a first fuel charge; (1) is supplied into the combustion chamber subsequent to the first fuel charge, and', '(2) has a reactivity different from the reactivity of the first fuel charge., 'b. one or more of the fuel and the material are supplied into the combustion chamber in a second fuel charge, wherein the second fuel charge4. The method of wherein the second fuel charge is supplied into the combustion chamber between:a. the start of the compression stroke, andb. 40 degrees prior to Top Dead Center (TDC).5. The method of wherein the fuel and the material are supplied to the combustion chamber at different times during the engine combustion cycle.6. The method of wherein:a. the fuel from the first supply is ...

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Номер записи: 32
05-02-2015 дата публикации

FUEL INJECTION SYSTEMS WITH ENHANCED CORONA BURST

Номер: US20150037738A1
Автор: McAlister Roy Edward
Принадлежит:

Methods, systems, and devices are disclosed for delivery a fluidic substance using Lorentz forces. In one aspect, a method to accelerate particles into a chamber includes distributing a fluidic substance between electrodes configured at a location proximate a chamber, in which electrodes include a low work function material, generating a current of ionized particles by applying an electric field between the electrodes to ionize at least some of the fluidic substance, and producing a Lorentz force to accelerate the ionized particles into the chamber. In some implementations, the method further includes applying an electric potential on an antenna electrode interfaced at the port to induce a corona discharge into the chamber, in which the corona discharge ignites the ionized particles within the chamber. 1. A method to produce an ignition in a chamber , comprises:generating a positive corona discharge at a predetermined location in a chamber;producing a Lorentz force to thrust ions into the chamber; andgenerating a negative corona discharge at the or another predetermined location proximate the port toward the chamber at a faster rate than that of the positive corona discharge,wherein the negative corona discharge combines with the positive corona discharge to ignite of an ignitable substance in the chamber.2. The method of claim 1 , wherein the chamber contains a fluidic substance present in the chamber claim 1 , the fluidic substance including at least one of a fuel or an oxidant.3. The method of claim 1 , wherein the generating the positive corona discharge at the predetermined location includes applying an electric field at a corona-generating electrode positioned proximate to the port of the chamber.4. The method of claim 3 , wherein the corona-generating electrode comprises a high work function material.5. The method of claim 3 , wherein the corona-generating electrode is structured to include a plurality of electrodes having at least two different structural ...

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Номер записи: 33
07-02-2019 дата публикации

FUEL INJECTION DEVICE

Номер: US20190040790A1
Автор: KUSAKABE Ryo, Ogura Kiyotaka, WATAI Takuya, YAMAOKA Shirou
Принадлежит: Hitachi Automotive Systems, Ltd.

An object of the present invention is to provide a fuel injection device in which fuel sprays hardly adhere to an intake valve, a wall surface in an engine cylinder, or a piston. 1. A fuel injection device including a valve body and a seat surface to perform injection and sealing of fuel cooperatively and a plurality of injection holes of which inlet opening surfaces are formed on the seat surface , whereina first injection hole and a second injection hole arranged closest to the first injection hole, which configure the plurality of injection holes, are configured such thatthe first injection hole is larger than the second injection hole in an injection hole angle to be an angle formed by a normal direction of the seat surface and a center axis of the injection hole andthe second injection hole is larger than the first injection hole in an area of a cross-section perpendicular to the center axis of the injection hole.2. The fuel injection device according to claim 1 , wherein the second injection hole has two injection holes arranged at positions sandwiching the first injection hole in a circumferential direction around a center of the seat surface.3. The fuel injection device according to claim 2 , whereinthe plurality of injection holes include at least one injection hole in addition to the first injection hole and the second injection hole andamong all injection holes included in the plurality of injection holes, the injection hole angle in the first injection hole is largest and the area of the cross-section perpendicular to the center axis of the injection hole in the first injection hole is smallest.4. The fuel injection device according to claim 2 , whereinthe plurality of injection holes include, in addition to the first injection hole and the second injection hole, a third injection hole and two fourth injection holes arranged to sandwich the third injection hole in the circumferential direction around the center of the seat surface andthe area of the ...

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Номер записи: 34
12-02-2015 дата публикации

Minimizing Alcohol Use In High Efficiency Alcohol Boosted Gasoline Engines

Номер: US20150046069A1
Автор: Daniel R. Cohn, Leslie Bromberg
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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Номер записи: 35
19-02-2015 дата публикации

Method for Operating an Internal Combustion Engine

Номер: US20150047600A1
Автор: Klenk Rolf, Scherer Christopher
Принадлежит:

A method for operating an internal combustion engine of a motor vehicle involves directly injecting fuel into a combustion chamber using an injection device, and a mixture of the fuel and air is ignited in the combustion chamber by an ignition device. The internal combustion engine is operated selectively in at least one first operating mode with at least one first valve lift of at least one gas exchange valve of the internal combustion engine, associated with the combustion chamber, or in at least one second operating mode with at least one second valve lift of the gas exchange valve, which is smaller than the first valve lift. For assisting a charge movement of the mixture in the second operating mode, at least one further injection of fuel directly into the combustion chamber is carried out prior to the ignition. 16-. (canceled)7. A method for operating an internal combustion engine of a motor vehicle , the method comprising:directly injecting fuel into at least one combustion chamber of the internal combustion engine using at least one injection device; andigniting, by an ignition device, a mixture of the fuel and air in the combustion chamber, at least one first operating mode with at least one first valve lift of at least one gas exchange valve of the internal combustion engine, associated with the combustion chamber, and', 'at least one second operating mode with at least one second valve lift of the gas exchange valve, which is smaller than the first valve lift,, 'wherein the internal combustion engine being operated selectively in'}wherein a charge movement of the mixture in the second operating mode is assisted by at least one further injection of fuel directly into the combustion chamber, which is carried out prior to the ignition.8. The method of claim 7 , wherein the further injection is carried out after the at least one first injection.9. The method of claim 7 , wherein in the second operating mode the ignition is a multi-spark ignition.10. The method ...

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Номер записи: 36
15-02-2018 дата публикации

Control method for dual injector of engine

Номер: US20180045132A1
Автор: Min-Kyu HAN
Принадлежит: Hyundai Motor Co

A method for controlling a plurality of injectors installed in the same cylinder of an engine may include determining whether an electrical failure occurred in any of the injectors, and entering a fail-safe mode when an electrical failure has occurred only in one of the plurality of injectors in the same cylinder. In the fail-safe mode, fuel supply to an injector that has experienced an electrical failure is cut off, and the amount of fuel injected into the cylinder by a normally operating injector is increased.

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Номер записи: 37
08-05-2014 дата публикации

CONTROL METHOD AND APPARATUS FOR DUAL INJECTOR OF ENGINE

Номер: US20140123932A1
Автор: LEE Hyung Ju, LEE II Nam
Принадлежит: HYUNDAI MOTOR COMPANY

It is possible to improve fuel efficiency with improved combustion performance of an engine by increase volatility of fuel supplied to a combustion chamber as much as possible and can reduce toxic exhaust substances, by appropriately controlling injection of two injectors in an engine with a dual injector. 1. A control method for a dual injector of an engine , comprising:controlling a first injector and a second injector disposed in first and second intake ports, respectively, connected to one combustion chamber, wherein injection times of the first injector and the second injector have temporal priority.2. The method of claim 1 , wherein an injection interval of the first injector and an injection interval of the second injector are continuous.3. The method of claim 2 , wherein the injection interval of the first injector and the injection interval of the second injector are switched during a valve-open time with the intake valve open.4. The method of claim 3 , wherein the injection interval of the first injector and the injection interval of the second injector do not overlap.5. The method of claim 3 , wherein the injection interval of the first injector and the injection interval of the second injector partially overlap.6. The method of claim 3 , wherein the injection interval of the first injector starts at least before the intake valve opens.7. A control apparatus for a dual injector of an engine comprising;a first injector and a second injector disposed in first and second intake ports, respectively, connected to one combustion chamber; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a controller that controls the first injector and the second injector in accordance with the method according to .'}8. A vehicle comprising;a first injector and a second injector disposed in first and second intake ports, respectively, connected to one combustion chamber; and{'claim-ref': {'@idref': 'CLM-00002', 'claim 2'}, 'a controller that controls the first injector and ...

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Номер записи: 38
08-05-2014 дата публикации

Fuel-stratified combustion chamber in a direct-injected internal combustion engine

Номер: US20140123934A1
Автор: David J. Schouweiler, Jr.
Принадлежит: Individual

A combustion chamber is provided within an internal combustion engine, the chamber bounded by a cylinder bore, a primary end, and a secondary end. The secondary end reciprocates between a TDC position nearest the primary end and a BDC position. Induction and exhaust ports are timed to open and close to transfer air into, and gasses from, the chamber. The chamber becomes fuel stratified when the secondary end is positioned within a stratified distance of the primary end. When stratified, the chamber is comprised of a central region, a perimeter region, and a transfer passageway between regions. A fuel injector at the primary end injects fuel only into the central region and only prior to ignition. The perimeter region pumps air into the central region prior to ignition, creating tumble turbulence. Combustion is initiated near TDC in the central region and concluded near TDC in the transfer passageway.

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Номер записи: 39
25-02-2016 дата публикации

Piston and Bowl for Gasoline Direct Injection Compression Ignition (GDCI)

Номер: US20160053714A1
Автор: Mark C. Sellnau
Принадлежит: Delphi Technologies Inc

A piston for use in a GDCI engine cooperates with the wall of a cylinder defined in the engine and with a cylinder head to define a combustion chamber. The surface of the piston that faces the cylinder head defines a bowl that is configured to receive fuel that is dispensed from a fuel injector that is located in the cylinder head substantially along the central axis of the cylinder. The bowl is configured such that substantially all of the injected fuel associated with a combustion event reaches a localized equivalence ratio greater than 0.0 and less than or equal to 1.2 at a time immediately preceding initiation of the combustion event.

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Номер записи: 40
15-05-2014 дата публикации

MECHANICAL MOTION AMPLIFICATION FOR NEW THERMODYNAMIC CYCLES

Номер: US20140130773A1
Автор: McAlister Roy Edward
Принадлежит:

The present technology relates generally to mechanical motion amplification for fuel injectors. In some embodiments, an injector for introducing gaseous or liquid fuel into a combustion chamber includes an injector body having a base portion configured to receive fuel into the body and a valve coupled to the body. The valve can be movable to an open position to introduce fuel into the combustion chamber. The injector further includes a valve operator assembly. The valve operator assembly can include a valve actuator coupled to the valve and movable between a first position and a second position, and a prime mover configured to generate an initial motion. The valve operator assembly can also include a mechanical stroke modifier configured to alter at least one of a direction or magnitude of the initial motion and convey the altered motion to the valve actuator. 1. A gaseous fuel injector , comprising:a piezoelectric actuator; and an input plunger connected to a surrounding transfer sleeve via a first lever, wherein the first lever is mounted to a first fulcrum disposed between the input plunger and the transfer sleeve; and', 'an output plunger connected to the transfer sleeve via a second lever mounted to a second fulcrum disposed between the output plunger and the transfer sleeve., 'a mechanical stroke amplifier, including2. The fuel injector according to wherein the first lever and second lever extend laterally from the transfer sleeve.3. The fuel injector according to wherein the first lever is pivotably mounted at a pivot location along a length of the first lever to the first fulcrum claim 1 , wherein the pivot location is closer to the input plunger than the transfer sleeve.4. The fuel injector according to wherein the input plunger and output plunger are nonparallel.5. The fuel injector according to wherein the mechanical stroke amplifier further includes at least one of a spring claim 1 , magnet claim 1 , or pneumatic cylinder coupled to at least one of the ...

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Номер записи: 41
05-03-2015 дата публикации

FUEL INJECTION SYSTEMS WITH ENHANCED CORONA BURST

Номер: US20150059685A1
Автор: McAlister Roy Edward
Принадлежит: McAlister Technologies, LLC

Methods, systems, and devices are disclosed for injecting and igniting a fuel using corona discharge for combustion. In one aspect, a method to ignite a fuel in an engine includes injecting ionized fuel particles into a combustion chamber of an engine, and generating one or more corona discharges at a particular location within the combustion chamber to ignite the ionized fuel particles, in which the generating includes applying an electric field at electrodes configured at a port of the combustion chamber, the electric field applied at a frequency that does not produce an ion current or spark on or between the electrodes. 1. A method to ignite a fuel in an engine , the method comprising:injecting ionized fuel particles into a combustion chamber of an engine; andgenerating one or more corona discharges at a particular location within the combustion chamber to ignite the ionized fuel particles, the generating including applying an electric field at electrodes configured at a port of the combustion chamber, the electric field applied at a frequency that does not produce an ion current or spark on or between the electrodes.2. The method of claim 1 , wherein the corona discharge initiates a combustion process of the ionized fuel particles with oxidant compounds present in the chamber.3. The method of claim 1 , wherein the electrodes include antenna structures interfaced at the port.4. The method of claim 1 , wherein the electrodes include a first electrode and a second electrode configured in a coaxial configuration at a terminal end interfaced with the port claim 1 , in which the first electrode is configured along the interior of an annular spacing between the second electrode and the first electrode includes one or more points protruding into the annular spacing.5. The method of claim 4 , wherein the second electrode includes one or more points protruding into the annular space and aligned with the one or more points of the first electrode to reduce the spacing ...

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Номер записи: 42
01-03-2018 дата публикации

Method and apparatus for controlling operation of an internal combustion engine

Номер: US20180058350A1
Автор: Chen-Fang Chang, Jun-Mo Kang, Yongjie Zhu
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

An internal combustion engine is described. Controlling the internal combustion engine includes gathering engine operating data during steady-state engine operation, including gathering a first dataset associated with a cylinder air charge during steady-state operation of the engine in the PVO state and gathering a second dataset associated with a cylinder air charge during steady-state operation of the engine in the NVO state. An optimization routine is executed to determine a first subset of parameters associated with a first relationship for a cylinder air charge model based upon the second dataset. The optimization routine is also executed to determine a second subset of parameters associated with a second relationship for the cylinder air charge model based upon the first dataset. A cylinder air charge is determined in real-time during engine operation based upon the cylinder air charge model and the first and second subsets of parameters.

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Номер записи: 43
01-03-2018 дата публикации

FUEL INJECTION CONTROL DEVICE FOR DIRECT-INJECTION ENGINE

Номер: US20180058366A1
Автор: Fujimoto Hidefumi, Nagasawa Takeshi, ONO Ryohei, OTA Noriyuki, SATO Kiyotaka, Uchida Kenji
Принадлежит: MAZDA MOTOR CORPORATION

A fuel injection valve () is configured such that the effective opening area of an injection port () increases as its lift amount increases. A fuel injection control unit (an engine control unit ) injects fuel in a lift amount changing mode wherein, when fuel is injected into a combustion chamber () in the terminal period of the compression stroke, the lift amount of the fuel injection valve is set to a predetermined large lift amount in the earlier period of the injection period, and in the later period of the injection period following the earlier period of the injection period, the lift amount is set to a small lift amount smaller than the large lift amount and is in a range where the fuel injection speed increases. 1. A fuel injection control device for a direct-injection engine , the fuel injection control device comprising:an engine body having a combustion chamber defined by a ceiling portion of a cylinder head, a cylinder provided to a cylinder block, and a piston reciprocating in the cylinder; anda fuel injection controller having a fuel injection valve disposed so as to inject liquid fuel into the combustion chamber, and configured to inject the fuel into the combustion chamber at a predetermined timing, whereinthe fuel injection valve is configured such that an effective opening area of an injection port through which the fuel is injected increases as a lift amount of the fuel injection valve increases, andfuel injection controller injects the fuel in a lift amount changing mode in which, when the fuel is injected into the combustion chamber in a terminal period of a compression stroke, the lift amount of the fuel injection valve is set to a predetermined large lift amount in an earlier period of an injection period, and in a later period of the injection period following the earlier period of the injection period, the lift amount is set to a small lift amount smaller than the large lift amount and is in a range where a fuel injection speed increases.2. ...

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Номер записи: 44
19-03-2015 дата публикации

FUEL REFORMER FOR INTERNAL-COMBUSTION ENGINE

Номер: US20150075451A1
Автор: Inuzuka Hiroyuki, MIZOBUCHI Takeshi, OBAYASHI Hideki
Принадлежит:

A fuel reformer includes a reforming-fuel injection valve and a fuel reformer catalyst disposed in an EGR pipe and performs a catalyst recovery control when a preset fuel cut execution condition is satisfied. In the catalyst recovery control, a fuel reforming capacity of the fuel reformer catalyst is recovered by stopping an injection of a main fuel and an injection of a reforming-fuel, while supplying additional air to the catalyst by maintaining both of an EGR valve and a throttle valve in a valve open state. Further, in the catalyst recovery control, temperature and a carbon deposit amount of the fuel reformer catalyst are estimated or detected based on which of an opening of the EGR valve and an opening of the throttle valve are adjusted. As a result, fuel reforming capacity is recovered without decreasing a fuel consumption rate improvement effect and a worsening of exhaust emission or drivability. 1. A fuel reformer for an internal combustion engine comprising:a main fuel injector injecting a main fuel that is supplied to an internal combustion engine;a throttle valve adjusting an intake air amount for the engine;an EGR passage returning a portion of an exhaust gas from an exhaust passage of the engine to an air-intake passage as an EGR gas;an EGR valve adjusting a flow amount of the EGR gas;a reforming-fuel injector injecting a reforming-fuel into the EGR passage;a fuel reformer catalyst disposed in the EGR passage and reforming the reforming-fuel injected by the reforming-fuel injector; anda catalyst recovery controller executing a catalyst recovery control that includes (i) performing a fuel cut, which stops an injection of the main fuel and the reforming-fuel, and (ii) maintaining the EGR valve and the throttle valve in a valve open state to supply additional air to the fuel reformer catalyst and recover a fuel reforming capacity of the fuel reformer catalyst.2. The fuel reformer of claim 1 , whereinthe catalyst recovery controller adjusts at least one of ...

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Номер записи: 45
12-06-2014 дата публикации

CONTROL DEVICE OF INTERNAL-COMBUSTION ENGINE

Номер: US20140158086A1
Автор: Matsuda Kazuhisa, Morita Kouji, Tsukagoshi Takahiro
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

When alcohol-blended fuel is supplied to an internal-combustion engine, the magnitude of alcohol concentration (more particularly, ethanol concentration Cetha) is judged (Step ) and, based on this judgment, the magnitude of operational status temperature (more particularly, cooling water temperature THW) is judged (Step ). Then, when the alcohol concentration is large and the operational status temperature is low, generation of an intermediate product which is an oxide of alcohol contained in the alcohol-blended fuel in an unburnt state after main injection and alcohol contained in the alcohol-blended fuel in an unburnt state after post injection (more particularly, aldehyde) is promoted, and the generated intermediate product is trapped in an intake passage by making an intake valve into an opened state in an exhaust stroke of the internal-combustion engine (Step ). 18-. (canceled)9. A control device of an internal-combustion engine applied to an internal-combustion engine equipped with a direct injection means which directly injects fuel containing at least gasoline into a combustion chamber of the internal-combustion engine and a variable valve actuation means to continuously change the timings of opening and closing and the valve opening position of an intake valve disposed in an intake passage through which the air inhaled into said combustion chamber , characterized in that:said variable valve actuation means is configured so as to keep said intake valve opened during a predetermined period after said direct injection means injects said fuel in order to raise the temperature of a catalyst disposed in an exhaust passage through which exhaust gas discharged from said combustion chamber passes, andsaid control device of an internal-combustion engine is equipped with an intermediate product generation presumption means to presume the quantity of an intermediate product produced from the unburnt fuel in the above-mentioned fuel supplied into the above-mentioned ...

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Номер записи: 46
12-06-2014 дата публикации

After-Treatment System and Method for Six-Stroke Combustion Cycle

Номер: US20140158087A1
Автор: Fiveland Scott B., Silver Ronald, Williams D. Ryan
Принадлежит: CATERPILLAR INC.

An internal combustion engine operates on a six-stroke combustion cycle including a first compression stroke, a first power stroke, a second compression stroke, and a second power stroke. A first fuel charge is introduced to a combustion chamber of the engine at a first fuel rate during the first compression and/or first power stroke to produce lean exhaust gasses. A second fuel charge is also introduced to the combustion chamber during the second compression and/or second power stroke to normally produce lean exhaust gasses. Periodically, the second fuel charge can be increased to a second fuel rate to produce stoichiometric rich exhaust gasses. A lean nitrogen oxide trap can be disposed in an exhaust system associated with the engine to temporarily trap nitrogen oxides. Once saturated, the LNT can be periodically regenerated by production of the rich exhaust gasses. 1. A method of reducing emissions from an internal combustion engine utilizing a six-stroke cycle that includes a first compression stroke , a first power stroke , a second compression stroke , and a second power stroke , the method comprising:introducing a first fuel charge to a combustion chamber during the first compression and/or first power stroke and combusting to produce a stoichiometric lean condition in the combustion chamber;introducing a second fuel charge to the combustion chamber during the second compression stroke and/or second power stroke to produce a second condition stoichiometric lean condition in the combustion chamber and combusting to produce lean exhaust gasses; andperiodically increasing the second fuel charge to produce a stoichiometric rich condition in the combustion chamber and combusting to produce rich exhaust gasses.2. The method of claim 1 , further comprising trapping nitrogen oxides in the lean exhaust gasses with a lean nitrogen oxide trap (LNT).3. The method of claim 2 , further comprising regenerating the LNT by releasing trapped nitrogen oxides in the presence of ...

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Номер записи: 47
12-03-2020 дата публикации

MAGNETIC VALVE RECOIL DEVICE

Номер: US20200080508A1
Автор: RABHI Vianney
Принадлежит:

The magnetic valve recoil device is intended for a valve-type ignition pre-chamber having a stratification cavity connected by a stratification pipe, which a stratification valve can close, to a combustion chamber housing a primary charge, a stratification injector, and an ignition unit leading to the cavity in order to inject and ignite an initiator charge so as to ignite the primary charge via a torch ignition pre-chamber formed by the stratification valve with the stratification pipe when it is not closing the latter, the valve being otherwise kept in contact with the pipe by a magnetic field created by a magnetic field source. 142123431530368911675137651413181972365242315132021. A magnetic valve recoil device () for a valve-type ignition pre-chamber () for an internal combustion engine () , said engine comprising a cylinder head () sitting on top of a cylinder () in order to form , together with a piston () , a combustion chamber () into which a primary charge () may be introduced , said cylinder head () receiving a stratification cavity () to which , on the one hand , a stratification injector () , which can inject an initiator charge () , and , on the other hand , ignition means () lead , said cavity () being connected by a stratification pipe () to the combustion chamber () while a stratification valve () can either close said pipe () and isolate the stratification cavity () from the combustion chamber () , with a cavity-side surface () of said valve () then resting on a valve closing seat () by means of a cavity-side valve bearing surface () , or form , together with said pipe () , a torch ignition pre-chamber () that causes the stratification cavity () to communicate with the combustion chamber () by means of at least one gas ejection orifice () that said pre-chamber () includes , with a chamber-side surface () of said valve () resting in this case on a valve opening seat () by means of a chamber-side valve bearing surface () , characterized in that said ...

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Номер записи: 48
09-04-2015 дата публикации

Fuel System Protection In A Multi-Fuel System Internal Combustion Engine

Номер: US20150096530A1
Автор: Bzymek Raymond, COWGILL Joshua D., Dunn Mark E., Marriott Craig D., Moscherosch Ben W., Wu Ning, Zhang Dehong
Принадлежит:

A technique for fuel system protection for an internal combustion engine includes introducing a directly injected fuel into a combustion chamber through a direct fuel injector, introducing a fumigated fuel upstream of an intake valve, selectively operating the internal combustion engine with at least one of the directly injected fuel and the fumigated fuel, determining a temperature of the direct fuel injector as a first function of engine operating parameters, and performing a temperature mitigation technique when the temperature rises above a first predetermined value such that the temperature is maintained below a second predetermined value. 1. A method of fuel system protection for an internal combustion engine , the method comprising:introducing a directly injected fuel into a combustion chamber through a direct fuel injector;introducing a fumigated fuel upstream of an intake valve; selectively operating said internal combustion engine with at least one of said directly injected fuel and said fumigated fuel;determining a temperature of said direct fuel injector as a first function of engine operating parameters; andperforming a temperature mitigation technique when said temperature rises above a first predetermined value such that said temperature is maintained below a second predetermined value.2. The method of claim 1 , wherein said first predetermined value is greater than said second predetermined value.3. The method of claim 1 , wherein said first predetermined value and said second predetermined value are related by one of:said first predetermined value is less than said second predetermined value; andsaid first predetermined value is equal to said second predetermined value.4. The method of claim 1 , wherein said mitigation technique comprises switching operation of said internal combustion engine from said fumigated fuel to said directly injected fuel.5. The method of claim 1 , wherein said mitigation technique comprises increasing a quantity of ...

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Номер записи: 49
16-04-2015 дата публикации

ROTARY CARBURETOR

Номер: US20150102511A1
Автор: NONAKA Takumi, ONODERA Hisato, TATEYANAGI Kazuyuki, YAMAZAKI Takahiro
Принадлежит:

In a carburetor, three downstream body passages in the body communicate with three valve passages in the valve element, and the valve element rotates between a closed position and an opened position. The carburetor is a one-bore type carburetor in which the body passages and the valve passages are respectively partitioned with the body partitions and the valve partitions. When rotating the valve element from the closed position to the opened position, the second body passage and the second valve passage for mixture start to communicate in advance than the first and third body passages and the first and third valve passages for air. 1. A rotary carburetor which is used in a stratified scavenging two-stroke internal combustion engine , comprising:a block-like body having a cylindrical bore with a center of an axis;a valve element having a cylindrical form and rotatably contained in the bore; anda nozzle unit disposed in the valve element along the axis,wherein the valve element includes valve passages for air and a valve passage for mixture extending through the valve element in a direction across the axis,wherein the nozzle unit includes a port which is opened to the valve passage for mixture and ejects fuel,wherein the body includes upstream body passage communicating with the valve passages for air and the valve passage for mixture upstream of the valve element, and downstream body passages for air and downstream body passage for mixture respectively communicating with the valve passages for air and the valve passage for mixture downstream of the valve element,wherein the valve element is rotatable around the axis between an opened position and an closed position, wherein in the opened position, the valve passages for air and the valve passage for mixture respectively communicate with the downstream body passages for air and the downstream body passage for mixture, and the valve passages for air and the valve passage for mixture communicate with the upstream body ...

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Номер записи: 50
03-07-2014 дата публикации

SYSTEM AND METHOD OF IMPROVING EFFICIENCY OF AN INTERNAL COMBUSTION ENGINE

Номер: US20140182544A1
Автор: Zhou Tongqing
Принадлежит:

An improved multi-stroke DIG or diesel engine and method includes a cylinder formed within an engine cylinder block, a piston is movably disposed within the cylinder, and a combustion chamber is formed in a space between the piston and a cylinder head. An injector is disposed within the engine cylinder head for supplying fuel into the cylinder. An intake valve is disposed within an intake opening formed in the engine and an exhaust valve is disposed within an exhaust opening formed in the engine. An actuator is connected to the piston, wherein movement of the piston causes the actuator to open the exhaust valve a first predetermined amount at a beginning of the compression stroke of the piston to vent air through an exhaust channel formed in the engine and to close the exhaust valve after a predetermined period of time within the compression stroke of the piston. 1. A multi-stroke engine comprising:a cylinder formed within an engine block;a piston movably disposed within the cylinder, wherein a combustion chamber is formed in a space between the piston and a cylinder head;an injector disposed within the engine cylinder head for supplying fuel into the cylinder;an intake valve disposed within an intake opening formed in the engine;an exhaust valve disposed within an exhaust opening formed in the engine;an actuator connected to the piston, wherein movement of the piston causes the actuator to open the exhaust valve a first predetermined amount at a beginning of the compression stroke of the piston to vent air through an exhaust channel formed in the engine and to close the exhaust valve after a predetermined period of time within the compression stroke of the piston.2. The engine of claim 1 , wherein the actuator opens the exhaust valve a second predetermined amount during an exhaust stroke of the piston to vent exhaust gas through an exhaust channel formed in the engine.3. The engine of claim 1 , wherein the actuator is a camshaft having an exhaust cam mounted to a ...

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Номер записи: 51
30-04-2015 дата публикации

FUEL INJECTOR

Номер: US20150115068A1
Автор: Ecker Rainer, Kochanowski Martin, Nowak Detlef, Pilgram Guido
Принадлежит:

A fuel injector configured as a high-pressure injection valve for the direct injection of fuel into a combustion chamber includes: a housing having an housing end face on the combustion chamber side; an actuator; a valve-closure member operable by the actuator; at least one outlet orifice in the housing end face on the combustion chamber side for the fuel, the valve-closure member selectively closing or opening the outlet orifice; and a ring provided round about the outlet orifice in the housing end face on the combustion chamber side. 112-. (canceled)13. A fuel injector configured as a high-pressure injection valve for direct injection of fuel into a combustion chamber , comprising:a housing having a housing end face on the combustion chamber side, wherein at least one outlet orifice is provided in the housing end face for the fuel;an actuator;a valve-closure member operable by the actuator, wherein the valve-closure member is configured to selectively close and open the outlet orifice; anda ring provided round about the outlet orifice on the housing end face on the combustion chamber side.14. The fuel injector as recited in claim 13 , wherein the housing end face on the combustion chamber side is dome-shaped.15. The fuel injector as recited in claim 13 , wherein claim 13 , on the housing end face on the combustion chamber side claim 13 , multiple outlet orifices are situated claim 13 , each having a ring.16. The fuel injector as recited in claim 13 , wherein the at least one outlet orifice includes a spray orifice having a first diameter and a pre-stage chamber adjacent to the spray orifice on the combustion chamber side having a second diameter claim 13 , the second diameter being larger than the first diameter.17. The fuel injector as recited in claim 16 , wherein an inside diameter of the ring is equal to the second diameter.18. The fuel injector as recited in claim 16 , wherein an inside diameter of the ring is greater than the second diameter.19. The fuel ...

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Номер записи: 52
11-04-2019 дата публикации

Internal Combustion Engine Control Device

Номер: US20190107041A1
Автор: KIHARA Yuusuke, SUKEGAWA Yoshihiro
Принадлежит:

Stratified air-fuel mixture is stably formed around an ignition plug during a stratified charge combustion operation. For this reason, to solve the above problem, the present invention provides an internal combustion engine control device for controlling an internal combustion engine. The internal combustion engine includes: a fluid injection valve provided along an axial direction of an ignition plug; and a fuel injection valve formed separately from the fluid injection valve and provided in a direction intersecting with the axial direction of the fluid injection valve, and the internal combustion engine control device includes a control unit which controls the fluid injection valve and the fuel injection valve so as to inject fluid from the fuel injection valve after injecting fluid from the fluid injection valve in a compression stroke. 1. An internal combustion engine control device for controlling an internal combustion engine ,the internal combustion engine comprising: a fluid injection valve provided along an axial direction of an ignition plug; and a fuel injection valve formed separately from the fluid injection valve and provided in a direction intersecting with the axial direction of the fluid injection valve,the internal combustion engine control device comprising a control unit configured to control the fluid injection valve and the fuel injection valve so as to inject fluid from the fuel injection valve after injecting fluid from the fluid injection valve in a compression stroke.2. An internal combustion engine control device for controlling an internal combustion engine ,the internal combustion engine comprising: a fluid injection valve provided adjacent to an ignition plug; and a fuel injection valve formed separately from the fluid injection valve and provided in a direction intersecting with an axial direction of the fluid injection valve,the internal combustion engine control device comprising a control unit configured to control the fluid ...

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Номер записи: 53
17-07-2014 дата публикации

METHODS FOR REDUCING RAW PARTICULATE ENGINE EMISSIONS

Номер: US20140196685A1
Автор: Louven Georg, Ruhland Helmut Hans
Принадлежит: FORD GLOBAL TECHNOLOGIES, LLC

The methods described allow for reducing particulate emissions from a direction injection engine during a starting phase, while also maintaining the engine start phase within a predetermined threshold. In one particular example, the methods comprise adjusting at least one of a fuel release pressure threshold and enrichment factor based on an engine condition; activating a starting device to rotate a crankshaft coupled to an engine cylinder without injecting any fuel; supplying fuel to the cylinder based on the enrichment factor only when a fuel pressure exceeds the fuel release pressure threshold; and stratifying a cylinder charge while adjusting a fuel injection within a compression phase and/or expansion phase of the engine. In this way, an amount of fuel injected may be evaporated in the combustion chamber while preventing a combustion wall wetting, which allows for reduced particulate emissions, particularly at reduced temperatures. 1. A method for reducing particulate emissions from a direct injection applied-ignition engine during a starting phase , comprising:adjusting at least one of a fuel release pressure threshold and enrichment factor based on one or more engine conditions;activating a starting device to rotate a crankshaft coupled to an engine cylinder without injecting any fuel;supplying fuel to the cylinder based on the enrichment factor only when a fuel pressure exceeds the fuel release pressure threshold; andstratifying a cylinder charge while adjusting at least one fuel injection within one of a compression phase and expansion phase of the engine.2. The method of claim 1 , wherein the at least one adjusted injection is performed close to ignition top dead center claim 1 , and wherein the at least one injection is initiated in a crank angle range defined by at least one of:125° before ignition top dead center and 75° after ignition top dead center;90° before ignition top dead center and 45° after ignition top dead center; and60° before ignition top ...

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Номер записи: 54
07-05-2015 дата публикации

INTERNAL COMBUSTION ENGINE AND METHOD OF DIRECT FUEL INJECTION

Номер: US20150122217A1
Автор: Bullmer Wolfgang, Frick Michael J., LEHMANN Lutz
Принадлежит: Transonic Combustion, Inc.

A direct fuel injection method and an internal combustion engine provided with appropriate sensors and data input lines to an Engine Control Unit (ECU) for performing this method. The method includes inputting at least data inputs representing a piston position, a rotational speed of the internal combustion engine, and a torque demand into an ECU, calculating in the ECU a calculated start of injection (SOI) for the direct fuel injection that is next based on the data inputs, calculating based on the data inputs and the calculated SOI a desired fuel temperature prior to the direct fuel injection that is next, heating fuel with a system delay not to exceed 5 seconds to the desired heated fuel temperature prior to a direct fuel injection, injecting the heated fuel, and repeating the aforementioned method steps for subsequent direct fuel injections. 1. A method of direct fuel injection of fuel into a cylinder of an internal combustion engine , the method comprising:a) inputting at least data inputs representing a piston position, a rotational speed of the internal combustion engine, and a torque demand into an Engine Control Unit (ECU);b) calculating in the Engine Control Unit (ECU) a calculated start of injection (SOI) for the direct fuel injection that is next based on the data inputs;c) calculating based on the data inputs and the calculated start of injection (SOI) a desired fuel temperature prior to the direct fuel injection that is next;d) heating fuel with a system delay not to exceed 5 seconds to the desired heated fuel temperature prior to a direct fuel injection;e) injecting the fuel heated in step d);f) repeating steps a) to e) for subsequent direct fuel injections.2. The method of claim 1 , further comprising sensing the fuel temperature of the fuel heated in step d) and inputting data representing the fuel temperature into the Engine Control Unit (ECU) for providing a closed loop control of that fuel temperature.3. The method of claim 1 , further comprising ...

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Номер записи: 55
24-07-2014 дата публикации

ARRANGEMENT AND METHOD FOR AN INTERNAL COMBUSTION ENGINE WITH DIRECT DUAL FUEL INJECTION

Номер: US20140202420A1
Автор: Jaasma Maria Servatius Alfons, Van Eijck Piet
Принадлежит: VIALLE ALTERNATIVE FUEL SYSTEMS B.V.

An arrangement and method for a combustion engine with direct injection and in particular to switching between two types of fuel is disclosed. A high-pressure pump () is connected to a combustion engine and the high-pressure rail for the direct injection of a fuel. At least two fuel storages () containing petrol and liquefied gas are present. The arrangement allows for switching from one fuel to another. Switching occurs by purging a fuel from the high-pressure pump () and the fuel supply line connected thereto by temporarily collecting the fuel in a purge unit (). The purge unit () is arranged for purging the high-pressure pump (), thus forcing out the prevailing fuel and replacing it with the new fuel. 1. Arrangement for a combustion engine with direct injection , comprising:a high pressure pump connectable to the internal combustion engine via a high-pressure rail, wherein the high pressure pump is configured to pump fuel into the high-pressure rail for the direct injection of fuel, the internal combustion engine;at least two fuel storages for LPG and petrol, respectively;a LPG line running from the LPG storage to an inlet of the high-pressure pump;a petrol fuel line running from the petrol storage to the inlet of the high-pressure pump, the LPG line being separate from the petrol fuel line, said high-pressure pump arranged for switching between directly injecting the LPG and the petrol into the high-pressure rail of the internal combustion engine;a LPG pump received in the first fuel storage and operative to pump the LPG, via the LPG line, to the inlet of the high-pressure pump;a petrol fuel pump operative to pump the petrol, via the petrol fuel line, to the inlet of the high-pressure pump;a first non-return valve provided in the LPG line;a second non-return valve provided in the petrol fuel line; anda control valve upstream from the high pressure pump mounted across the second non-return valve provided in the petrol fuel line, wherein the control valve is ...

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Номер записи: 56
04-05-2017 дата публикации

END SEAL STRUCTURE OF A FUEL RAIL FOR A GASOLINE DIRECT INJECTION ENGINE

Номер: US20170122277A1
Автор: Suzuki Shuji
Принадлежит:

Provided is an end seal structure of a fuel rail for a gasoline direct injection engine, the end seal structure being characterized in that: a collar is joined by brazing to an outer circumference of an end of a pipe of the rail body including a pipe; the end cap having a cap-nut shape and including a sealing projection on an surface thereof facing the opening at the end of the pipe of the rail body, is screwed and fixed to the collar; and the sealing projection of the end cap brings into pressure contact with the end of the opening of the rail body by an axial force created by tightening of the end cap having the cap-nut shape to seal the end of the opening of the rail body. 1. An end seal structure of a fuel rail for a gasoline direct injection engine , the fuel rail including a rail body composed of a pipe that is closed by an end cap or end caps at an end or both ends of the rail body , the end seal structure being characterized in that:a collar is joined by brazing to an outer circumference of the end of the pipe of the rail body, the collar having a short cylindrical body and including an external thread formed on an outer circumferential surface of the collar;the end cap has a cap-nut shape and includes a sealing projection on an surface of the end cap facing an opening at the end of the pipe of the rail body, the sealing projection being placed in abutting contact with an end face of the opening at the end of the pipe, and the end cap is screwed and fixed to the collar; andthe sealing projection of the end cap brings into pressure contact with the end of the opening of the rail body by an axial force created by tightening of the end cap having the cap-nut shape so as to the end of the opening of the rail body.2. The end seal structure of the fuel rail for the gasoline direct injection engine according to claim 1 , wherein a sealing mechanism to seal the rail body by the end cap having the cap-nut shape is configured such that the sealing projection of the ...

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Номер записи: 57
31-07-2014 дата публикации

ENGINE START CONTROL APPARATUS FOR HYBRID VEHICLE

Номер: US20140209059A1
Автор: Ideshio Yukihiko, KOJIMA Susumu, Nakanishi Naoki
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

In a hybrid vehicle, when using an ignition start to start a direct injection engine while any one of the cylinders has stopped near top dead center, engine revolutions are raised by producing a first explosion in a first cylinder, which is situated before a second cylinder in an ignition sequence and is in an expansion stroke and in which an exhaust value is not open, by directly injecting fuel into the first cylinder and igniting the fuel. Furthermore, assistance in increasing the engine revolutions is started by transmitting assist torque output from a motor-generator to the direct injection engine via a clutch, in a peak section immediately after the start of increase in the engine revolutions. The stopped direct injection engine can be started using a sufficient required assist torque, namely, electrical energy, whereby the electrical energy for engine starting that is always reserved in a battery (accumulator apparatus) is reduced and therefore a travel range is increased and vehicle fuel consumption is improved appropriately. 1. An engine start control apparatus for a hybrid vehicle including a direct injection engine directly injecting fuel into cylinders , a clutch connecting and disconnecting the direct injection engine with respect to a power transmission path , and a rotary machine functioning at least as an electric motor , the direct injection engine and the rotary machine being able to be used as drive power sources for travel , comprising:a controller which is configured to, when starting up the direct injection engine in a state where a second cylinder of a plurality of cylinders is positioned at top dead center, raise engine revolutions by producing a first explosion in a first cylinder situated before the second cylinder in an ignition sequence, the first cylinder being in an expansion stroke and an exhaust valve thereof not being open, by directly injecting fuel into the first cylinder and igniting the fuel, and start assistance in increasing the ...

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Номер записи: 58
10-05-2018 дата публикации

FUEL INJECTOR WITH VARIABLE FLOW DIRECTION

Номер: US20180128228A1
Автор: Zhang Xiaogang
Принадлежит:

A fuel injector and method are disclosed wherein an injector body defines a cavity and passages from an inlet at the cavity through an outside surface of the injector body. Each passage may have a first inner contour at a first angle and a second inner contour at a second angle. An injector pin with a fuel pass-though volume may be movable within the cavity to selectively overlap an outlet of the pass-through volume with an inlet of the passages to selectively direct fuel in varying quantities along the first second inner contours. 1. A fuel injector comprising: a first inner contour forming a first angle with the injector body central axis, and', 'a second inner contour forming a second angle with the injector body central axis;, 'an injector body defining a cavity on an inside thereof and having an outside surface, the injector body having a central axis, one or more passages passing from an inlet at the cavity through the outside surface, the one or more passages each havingan injector pin defining a fuel pass-though volume movable within the cavity to selectively overlap an outlet of the pass-through volume with inlet of the one or more passages to selectively direct fuel in varying quantities along one or both of the first inner contour and the second inner contour.2. The fuel injector of claim 1 , wherein the first inner contour is along a first portion of a conical wall defining the one or more passages claim 1 , and the second inner contour is along a second portion of the conical wall.3. The fuel injector of claim 1 , wherein the inlet has an annular cross-section and the one or more passages has a circular outlet.4. The fuel injector of claim 3 , wherein inlet has a first cross-sectional area claim 3 , and the circular outlet has a second cross-sectional area claim 3 , wherein the first and second cross-sectional areas are substantially equal.5. The fuel injector of claim 1 , wherein the injector pin is configured to move and selectively direct the fuel in ...

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Номер записи: 59
11-05-2017 дата публикации

Diesel Engine Control Device and Control Method

Номер: US20170130667A1
Автор: Isshou Uehara
Принадлежит: Nissan Motor Co Ltd

A direct injection diesel engine is provided with a fuel injection nozzle which is capable of performing a multistage injection. In a middle-or-high load region, in order to decrease soot, an after-injection is performed immediately after a main injection. In a case of fuel with a low Cetane number, the after-injection can cause a worsening of soot. Hence, an ignition delay interval (period of time) of the main injection is determined. In a case where the ignition time delay interval (period of time) is equal to or above a threshold value, the after-injection is inhibited.

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Номер записи: 60
07-08-2014 дата публикации

DIRECT-INJECTION ENGINE COMBUSTION CHAMBER STRUCTURE

Номер: US20140216393A1
Автор: Kakehi Yukihisa, Kamijyou Tomoyuki, Mizuki Tooru, Nagata Shinichi, Uchida Shuuji
Принадлежит: Isuzu Motors Limited

A direct-injection engine combustion chamber structure including, at a top surface of a piston, an inclined surface and an orthogonal surface. The inclined surface, continuous with an inner peripheral wall surface of a cavity, extends outward in a radial direction of the piston and becomes shallower toward an outer side in a radial direction of the piston. The orthogonal surface, continuous with an outer periphery of the inclined surface, without a gap, extends to an outer peripheral surface of the piston and is orthogonal to a central axis of the piston. 18-. (canceled)9. A direct-injection engine combustion chamber structure comprising:a cavity which is a recess provided at a center of a top of a piston and to which fuel is injected from an injection hole of an injector disposed above the piston;an inclined surface which is continuous with an inner peripheral wall surface of the cavity, extends outward in a radial direction of the piston, and gets shallower toward an outer side of the radial direction of the piston; andan orthogonal surface which is continuous with an outer periphery of the inclined surface without a gap, extends to an outer peripheral surface of the piston, and is orthogonal to a central axis of the piston, whereinthe inclined surface and the orthogonal surface are provided at a top surface of the piston.10. The direct-injection engine combustion chamber structure according to claim 9 , wherein an angle of the inclined surface is set within a range of 1 to 30 degrees from a side of the orthogonal surface.11. The direct-injection engine combustion chamber structure according to claim 9 , wherein a shape of the cavity is of a reentrant type claim 9 , a toroidal type claim 9 , or a shallow pan type.12. The direct-injection engine combustion chamber structure according to claim 10 , wherein a shape of the cavity is of a reentrant type claim 10 , a toroidal type claim 10 , or a shallow pan type.13. The direct-injection engine combustion chamber ...

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Номер записи: 61
07-08-2014 дата публикации

Control device for internal combustion engine

Номер: US20140216394A1
Автор: Kazuhisa Matsuda, Koji Morita, Takahiro TSUKAGOSHI
Принадлежит: Toyota Motor Corp

When an alcohol mixed fuel is supplied to an internal combustion engine, the magnitude of the alcohol concentration (more specifically, ethanol concentration Cetha) is determined (step 1005 ), and the magnitude of an operation state temperature (more specifically, cooling water temperature THW) is determined on the basis of said determination (step 1015 ). When the alcohol concentration is high and the operation state temperature is low, the generation of intermediate products (more specifically, aldehydes), which are alcohol oxides contained in unburned alcohol mixed fuel, is promoted, and the intermediate products generated are trapped in an intake passage by opening an intake valve in the expansion stroke of the internal combustion engine (step 1055 ).

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Номер записи: 62
07-08-2014 дата публикации

FUEL MANAGEMENT SYSTEM FOR VARIABLE ETHANOL OCTANE ENHANCEMENT OF GASOLINE ENGINES

Номер: US20140216395A1
Автор: Bromberg Leslie, Cohn Daniel R., Heywood John B.
Принадлежит:

Fuel management system for efficient operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder of the engine. A fuel management microprocessor system controls injection of the anti-knock agent so as to control knock and minimize that amount of the anti-knock agent that is used in a drive cycle. It is preferred that the anti-knock agent is ethanol. The use of ethanol can be further minimized by injection in a non-uniform manner within a cylinder. The ethanol injection suppresses knock so that higher compression ratio and/or engine downsizing from increased turbocharging or supercharging can be used to increase the efficiency or the engine. 115-. (canceled)16. A fuel management system for a spark ignition engine where the fuel management system controls fueling from a first fueling system that directly inject fuel into at least one cylinder as a liquid and a second fueling system that injects fuel into a region outside of the cylinder;and where the fraction of fuel in the cylinder that is introduced by the first fueling system increases with increasing torque so as to prevent knock;and where the fuel management system uses spark retard so as to reduce the fraction of fuel in the cylinder that is introduced from the first fueling system.17. The fuel management system of where closed loop control using a knock detector is employed to increase the fraction of fuel introduced by the first fueling system so as to prevent knock as the torque is increased.18. The fuel management system of where during at least part of the driving cycle there is a torque range where both fueling system are used at the same torque.19. The fuel management system of where the increase in fee fraction of feel in the cylinder that is provided by the first fueling system as torque is increased is substantially equal to that needed to prevent knock.20. The fuel management system of where only the first fueling system is used when the ...

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Номер записи: 63
07-08-2014 дата публикации

DIRECT INJECTION GASOLINE ENGINE AND METHOD OF CONTROLLING THE DIRECT INJECTION GASOLINE ENGINE

Номер: US20140216396A1
Автор: Araki Keiji, Fujimoto Hidefumi, Ichikawa Kazuo, IKAI Takashi, Kai Shingo, Masuyama Susumu, Nakahashi Hirokazu, NAKAO Yusuke, NARAHARA Kazuaki, Seto Masatoshi, Takahashi Yoshitomo, TANAKA Tatsuya, Tanita Yoshio, Yamashita Hiroyuki
Принадлежит: MAZDA MOTOR CORPORATION

A direct injection engine includes an ignition assistance section applying energy to fuel injected into a cylinder using an injector to assist auto-ignition combustion of the fuel when the engine is within an auto-ignition combustion operation range. A start time of fuel injection is set within a period from a terminal stage of a compression stroke to a compression top dead center. The energy is applied to the fuel injected into the cylinder in a period from start of the fuel injection to an initial stage of an expansion stroke such that a time of a specific crank angle when an increase rate of in-cylinder pressure, which is a ratio of a change in the in-cylinder pressure to a change in a crank angle in motoring the engine, reaches a negative maximum value overlaps a combustion period when a combustion mass percentage of the fuel ranges from 10% to 90%. 1. A direct injection gasoline engine having an auto-ignition combustion operation range allowing auto-ignition combustion of fuel injected into a cylinder by an injector and containing at least gasoline , the engine having a geometric compression ratio ranging from 18 to 40 , both inclusive , the engine comprising:an injection control section configured to control fuel injection of the injector; andan ignition assistance section configured to apply energy to the fuel injected into the cylinder by the injector to assist the auto-ignition combustion of the fuel, when the engine is within the auto-ignition combustion operation range, whereinwhen the engine is within the auto-ignition combustion operation range, the injection control section sets a start time of the fuel injection within a period from a terminal stage of a compression stroke to a compression top dead center, andthe ignition assistance section applies the energy to the fuel injected into the cylinder in a period from start of the fuel injection to an initial stage of an expansion stroke such that a time of a specific crank angle ranging from 4° C.A to 15 ...

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Номер записи: 64
28-05-2015 дата публикации

CONTROL DEVICE FOR DIRECT INJECTION GASOLINE ENGINES

Номер: US20150144093A1
Автор: Fukube Tsugio, Harada Yuji, Seto Masatoshi, TANAKA Tatsuya, Yamashita Hiroyuki
Принадлежит:

A control device for direct injection gasoline engines includes a fuel injection control part (engine control device) composed to control a fuel injection aspect of an injector. The fuel injection control part changes an injection mode of the injector by changing the lift amount of the injector and the injection interval of the fuel respectively. The fuel injection control part switches between a first injection mode, which includes multiple times of the fuel injection with the small lift amount of the injector and the small interval of the fuel injection, and a second injection mode, which includes multiple times of the fuel injection with the bigger lift amount of the injector and the larger interval of the fuel injection than those of the first injection mode, according to an operating state of the engine body. 1. A control device for a direct injection gasoline engine , comprising:an engine body having a cylinder;an injector for injecting fuel including at least gasoline into the cylinder and being configured so that the larger a lift amount of the injector is, the larger a fuel injection opening area of the injector becomes; anda fuel injection control part for restraining a fuel injection aspect of the injector, wherein the fuel injection control part changes injection modes of the injector by changing each of the lift amount of the injector and an injection interval of the fuel, and switches between a first injection mode, which includes multiple fuel injections at a number of times that are spaced by a small fuel injection interval and with a small lift amount of the injector, and a second injection mode, which includes multiple fuel injections at a number of times that are spaced by a larger fuel injection interval and with a larger lift amount of the injector than those of the first injection mode, according to an operating state of the engine.2. The control device for direct injection gasoline engines according to claim 1 , wherein the fuel injection ...

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Номер записи: 65
07-08-2014 дата публикации

Minimizing Alcohol Use In High Efficiency Alcohol Boosted Gasoline Engines

Номер: US20140222319A1
Автор: Daniel R. Cohn, Leslie Bromberg
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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Номер записи: 66
16-05-2019 дата публикации

Fuel Injection Control Device

Номер: US20190145305A1
Автор: KIHARA Yuusuke, OGATA Kenichiro, OOSUGA Minoru, ORYOJI Kazuhiro, SARUWATARI Masayuki, SUKEGAWA Yoshihiro
Принадлежит:

An object of the invention is to form a highly homogeneous air-fuel mixture which is not influenced by an engine rotation speed. Therefore, the invention provides a fuel injection control device including a cylinder, a first injector disposed at an upper portion of the cylinder in the axial direction and a center portion thereof in the radial direction, an intake valve disposed at an upper portion of the cylinder in the axial direction and an outer portion thereof in the radial direction in relation to the first fuel injection device, and a second injector supplying fuel from an upper portion of the cylinder in the axial direction and at least an outer portion in the radial direction in relation to the intake valve, in which a rotation speed of the engine is high, a fuel supply amount ratio of the first injector with respect to the second injector is controlled to be larger than that of a case where the rotation speed is low. 1. A fuel injection control device for controlling a fuel injection of an engine , the device comprising a cylinder , a first injector disposed at an upper portion of the cylinder in the axial direction and a center portion thereof in the radial direction , an intake valve disposed at an upper portion of the cylinder in the axial direction and an outer portion thereof in the radial direction in relation to the first fuel injection device , and a second injector supplying fuel from an upper portion of the cylinder in the axial direction and at least an outer portion in the radial direction in relation to the intake valve ,wherein a rotation speed of the engine is high, a fuel supply amount ratio of the first injector with respect to the second injector is controlled to be larger than that of a case where the rotation speed is low.2. The fuel injection control device according to claim 1 ,wherein the second injector is disposed at an upper portion of the cylinder and an outer portion thereof in the radial direction in relation to the intake valve ...

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Номер записи: 67
11-06-2015 дата публикации

FUEL INJECTOR

Номер: US20150159612A1
Автор: KATO Noritsugu
Принадлежит:

A fuel injector injecting a fuel toward a combustion chamber mounted to a gasoline engine is provided with plural injection ports through which the fuel is injected. Each injection port includes an injection-port axial line limiting a pointing direction of the injection port, and the injection-port axial lines point to different directions. The injection ports include at least one intake injection port the injection-port axial line of which points to an intake space in the combustion chamber between a top surface of a piston of the internal combustion engine and an intake valve of the internal combustion engine. The intake injection port is defined by an inner peripheral wall surface extending in the injection-port axial line of the intake injection port and having a straight shape. The injection ports further include at least one exhaust injection port the injection-port axial line of which points to an exhaust space in the combustion chamber between the top surface of the piston of the internal combustion engine and an exhaust valve of the internal combustion engine. The exhaust injection port is defined by an inner peripheral wall surface separated from the injection-port axial line of the exhaust injection port toward an outlet opening and having an enlarged shape toward the outlet opening. 1. A fuel injector injecting a fuel toward a combustion chamber mounted to an internal combustion engine , the fuel injector comprising:a plurality of injection ports through which the fuel is injected, whereineach injection port includes an injection-port axial line limiting a pointing direction of the injection port,injection-port axial lines point to different directions,the injection ports include at least one intake injection port the injection-port axial line of which points to an intake space in the combustion chamber between a top surface of a piston of the internal combustion engine and an intake valve of the internal combustion engine,the intake injection port is ...

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Номер записи: 68
28-08-2014 дата публикации

COMBUSTION SYSTEM FOR AN ENGINE HAVING A SWIRL INDUCING COMBUSTION CHAMBER

Номер: US20140238341A1
Автор: STRAUB ROBERT D.
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A combustion chamber of an internal combustion engine includes a contoured surface that defines a plurality of deflection foils. The contoured surface distributes fuel spray into portions directed toward one of the deflection foils. Each deflection foil re-directs their respective portion of the fuel spray into a combined radial path that swirls about a center of the combustion chamber. Each of the deflection foils defines a flow path and a foil axis. The flow path includes an entrance segment and an exit segment. The entrance segment directs a portion of the fuel spray radially away from the center of the combustion chamber, and the exit segment directs the portion of the fuel spray substantially tangential relative to the combined radial path of the re-directed portions of the fuel spray. 1. An internal combustion engine comprising:an engine assembly defining a bore extending along a central bore axis;a piston disposed within the bore and moveable in a reciprocating motion within the bore along the central bore axis;wherein the piston and the engine assembly cooperate to define a combustion chamber;a direct injection fuel system having a fuel injector for injecting a fuel spray into the combustion chamber along a path;wherein the combustion chamber includes a contoured surface defining a plurality of deflection foils; andwherein the contoured surface receives and re-distributes the fuel spray into a plurality of portions, with each portion of the fuel spray directed toward one of the plurality of deflection foils, and with each of the plurality of deflection foils re-directing their respective portion of the fuel spray into a combined radial path swirling about a center of the combustion chamber.2. An internal combustion engine as set forth in wherein the contoured surface is defined by an axial end surface of the piston.3. An internal combustion engine as set forth in wherein the path of the fuel spray is approximately parallel with the central bore axis.4. An ...

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Номер записи: 69
18-09-2014 дата публикации

METHOD AND SYSTEM FOR VACUUM CONTROL

Номер: US20140261301A1
Автор: Leone Thomas G.
Принадлежит: FORD GLOBAL TECHNOLOGIES, LLC

Methods and systems are provided for adjusting a fuel injection split between a direct injection and a port injection based on engine vacuum demand. When more intake manifold vacuum is required, relatively more direct injection is used to take advantage of the associated throttling for generating vacuum. The vacuum may then be used for canister purging, crankcase ventilation, or actuating an engine vacuum consumption device. 1. A method for an engine comprising:in response to engine vacuum generation being lower than a vacuum demand,increasing a proportion of fuel injected into a cylinder via direct injection while correspondingly decreasing a proportion of the fuel injected into the cylinder via port injection.2. The method of claim 1 , wherein the increasing and decreasing includes claim 1 , adjusting a ratio of fuel injected into the cylinder during a combustion event via a direct injector and a port injector based on the engine vacuum demand.3. The method of claim 1 , where increasing a proportion of fuel injected into a cylinder via direct injection while correspondingly decreasing a proportion of the fuel injected into the cylinder via port injection includes increasing a pulse width of direct fuel injection while correspondingly decreasing a pulse width of port fuel injection to the cylinder.4. The method of claim 1 , further comprising claim 1 , while increasing the proportion of direct injected fuel claim 1 , increasing throttling of intake aircharge.5. The method of claim 1 , wherein the increasing a proportion of fuel injected via direct injection is based on a difference between the vacuum demand and the engine vacuum generation claim 1 , the engine vacuum generation estimated based on an engine intake manifold vacuum level.6. The method of claim 5 , further comprising claim 5 , maintaining fuel injection with the increased proportion of direct injection until engine intake manifold vacuum level is at or above vacuum demand.7. The method of claim 1 , ...

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Номер записи: 70
18-09-2014 дата публикации

FUEL INJECTION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

Номер: US20140261302A1
Автор: NAKANO Tomohiro
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

When injecting fuel from a direct injector and a port injector such that a requested fuel injection amount is obtained in an internal combustion engine, the direct injector is driven in the following manner. That is, after a target fuel injection amount for the fuel injection with the higher priority among fuel injection in the late stage of an intake stroke and fuel injection in the early stage of the intake stroke in the direct injector has been set on the basis of the engine operating condition, the target fuel injection amount for the fuel injection with the lower priority is set on the basis of the engine operating condition. Moreover, the direction injector is driven in such a manner that the target fuel injection amount for each of the abovementioned fuel injections set in this manner is obtained. 1. A fuel injection control device for an internal combustion engine having a direct injector capable of injecting fuel into a cylinder of the engine in a late stage of an intake stroke and an early stage of the intake stroke of the engine , the fuel injection control device performing fuel injection from the direct injector to supply at least some of a requested fuel injection amount determined based on an engine operating state , the control device being characterized in thatthe control device sets a target fuel injection amount of the fuel injection from the direct injector in the late stage of the intake stroke to a requested value corresponding to the engine operating state, andthe control device performs fuel injection from the direct injector in the late stage of the intake stroke by the target fuel injection amount, and operates the direct injector to inject, in the early stage of the intake stroke, an amount of fuel that corresponds to a part of the requested fuel injection amount that cannot be injected by the fuel injection from the direct injector in the late stage of the intake stroke.2. A fuel injection control device for an internal combustion engine ...

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Номер записи: 71
09-07-2015 дата публикации

CYLINDER HEAD ASSEMBLY

Номер: US20150192088A1
Автор: Sahadan Mohd Suffian, Taylor Gordon
Принадлежит: Perusahaan Otomobil Nasional Sdn Bhd

A cylinder head assembly for an internal combustion engine including a cylinder head, a water jacket mountable to said cylinder head, and a fuel injector and a spark plug mountable in the water jacket so as to extend through the cylinder head and into a corresponding combustion chamber. The spark plug and fuel injector are mountable along either a first or second axis, and the cylinder head has an injector recess shaped to receive the spark plug and the injector along both first and second axes. 1. A cylinder head assembly for an internal combustion engine , the assembly comprising:a cylinder head;a water jacket mountable to said cylinder head; anda fuel injector and a spark plug mountable in said water jacket so as to extend through the cylinder head and into a corresponding combustion chamber, wherein said spark plug and fuel injector are mountable along either a first or second axis, said cylinder head having an injector recess shaped to receive the spark plug and said injector along both first and second axes.2. The assembly according to claim 1 , wherein the first axis is a longitudinal axis parallel to a crankshaft axis of the engine claim 1 , and the second axis is a transverse axis orthogonal to the crankshaft axis of the engine.3. The assembly according to claim 1 , wherein the water jacket includes recesses to receive the spark plug and said fuel injector arranged along the first axis.4. The assembly according to claim 1 , wherein the water jacket includes recesses to receive the spark plug and said fuel injector arranged along the second axis.5. The assembly according to claim 1 , wherein the cylinder head includes two valve recesses corresponding to inlet and outlet valves for said combustion chamber claim 1 , said injector recess positioned intermediate said valve recesses.6. A cylinder head for a cylinder head assembly comprising:a water jacket mountable to said cylinder head; anda fuel injector and a spark plug mountable in said water jacket so as to ...

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Номер записи: 72
16-07-2015 дата публикации

ROBUST DIRECT INJECTION FUEL PUMP SYSTEM

Номер: US20150198081A1
Автор: Basmaji Joseph F., Meinhart Mark, Pursifull Ross Dykstra, Surnilla Gopichandra
Принадлежит: FORD GLOBAL TECHNOLOGIES, LLC

A method for a PFDI engine may comprise, during a first condition, comprising direct-injecting fuel to the PFDI engine, estimating a fuel vapor pressure, and setting a fuel lift pump pressure greater than the fuel vapor pressure by a threshold pressure difference, and during a second condition, comprising port-fuel-injecting fuel to the PFDI engine, setting a DI fuel pump command signal greater than a threshold DI fuel pump command signal without supplying fuel to a DI fuel rail. 1. A method for a PFDI engine , comprising: estimating a fuel vapor pressure, and', 'setting a fuel lift pump pressure greater than an estimated fuel vapor pressure by a threshold pressure difference; and, 'during a first condition, including direct-injecting fuel to the PFDI engine,'} 'setting a DI fuel pump command signal greater than a threshold DI fuel pump command signal without supplying fuel to a DI fuel rail.', 'during a second condition, including port-fuel-injecting fuel to the PFDI engine,'}2. The method of claim 1 , wherein estimating the fuel vapor pressure comprisesswitching off a fuel lift pump,measuring a fuel passage pressure compliance while direct-injecting fuel, andsetting the fuel vapor pressure to a fuel passage pressure when the fuel passage pressure compliance is less than a threshold compliance.3. The method of claim 2 , wherein measuring the fuel passage pressure compliance comprises measuring a pressure compliance of a fuel passage fluidly coupled between the fuel lift pump the DI fuel pump.4. The method of claim 1 , wherein estimating the fuel vapor pressure comprisesswitching off the fuel lift pump, andsetting the fuel vapor pressure to a fuel passage pressure after delivering a threshold fuel volume from a fuel passage fluidly coupled between the fuel lift pump and the DI fuel pump.5. The method of claim 1 , further comprising during the first condition claim 1 , enforcing the DI fuel pump duty cycle greater than the threshold duty cycle.6. The method of claim ...

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Номер записи: 73
20-06-2019 дата публикации

Method for Operating an Internal Combustion Engine, and Internal Combustion Engine

Номер: US20190186342A1
Автор: Herbert Zoeller
Принадлежит: DAIMLER AG

A method for operating an internal combustion engine includes using a 3-front combustion method. When the fuel is injected into the combustion chamber the fuel flows through an injection element with a hydraulic flow of more than 1000 cubic centimeters per 60 seconds and under an injection pressure of 100 bar and 1 liter capacity per cylinder if the internal combustion engine is used in a truck application. The fuel flows through the injection element with a hydraulic flow of more than 1900 cubic centimeters per 60 seconds and under an injection pressure of 100 bar and 1 liter capacity per cylinder if the internal combustion engine is used in a car application.

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Номер записи: 74
30-07-2015 дата публикации

Control device of gasoline direct-injection engine

Номер: US20150211431A1
Автор: Hiroyuki Yamashita, Masahiko Fujimoto, Masatoshi Seto, Yuji Harada
Принадлежит: Mazda Motor Corp

A control device of a gasoline direct-injection engine is provided. The control device includes an engine body, an injector, and a controller. Within a high load operating range, the controller causes the injector to perform a pre-injection and a post injection. In the pre-injection, the fuel is injected to cause a fuel concentration within an in-cylinder radially peripheral section to be higher than a fuel concentration within an in-cylinder radially central section at a timing for the fuel to ignite. In the post injection, the fuel is injected to cause the fuel concentration within the radially central section to be higher than the fuel concentration within the radially peripheral section at a timing for the fuel to ignite. The timing for the fuel injected in the post injection to ignite is after an oxidative reaction of the fuel injected in the pre-injection occurs and after a compression top dead center.

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Номер записи: 75
20-07-2017 дата публикации

Method for operating a direct-injection internal combustion engine, and applied-ignition internal combustion engine for carrying out such a method

Номер: US20170204827A1
Автор: Jan Linsel, Kay Hohenboeken, Klemens Grieser, Oliver Berkemeier
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Systems and methods are provided for operation of fuel injectors within an applied-ignition, direct-injection internal combustion engine. In one example, a needle of a fuel injector is moved from a retracted position to an extended position relative to a plurality of injection holes of a nozzle of the fuel injector, with at least one injection hole being separated from a fuel supply system earlier than each other injection hole. In a partially retracted position, fuel flow along a first side of the needle is decreased relative to fuel flow along a second side of the needle.

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Номер записи: 76
16-10-2014 дата публикации

Combustion Method and Internal Combustion Engine

Номер: US20140305402A1
Автор: Seddouk Naima, Zoeller Herbert
Принадлежит:

A combustion process with auto-ignition for direct-injection internal combustion engines involves dividing injection jets at a jet divider contour into a first partial quantity, a second partial quantity, and third partial quantities. The first partial quantity enters into the piston cavity, the second partial quantity enters via the piston step into a region between the piston crown and the cylinder head, and the third partial quantities, starting from the respective injection jet, spread out on both sides in the peripheral direction in opposite directions along the piston step, and the respective third partial quantities collide with one another between two adjacent injection jets within the piston step and are deflected radially inwardly. The first partial quantity and the second partial quantity form a first combustion front and a second combustion front, and the partial quantities which in each case are jointly deflected inwardly form a third combustion front radially inwardly into a gap between the injection jets. The injection jets are deflected upstream from the jet divider contour in the direction of the piston by means of a resultant flow formed essentially from a swirl, a squish gap flow, and a jet flow. 120-. (canceled)21. A combustion method having auto-ignition for direct-injection internal combustion engines ,the internal combustion engine having at least one cylinder with a combustion chamber laterally delimited by a cylinder wall, and is delimited axially on one side by a cylinder head, and is delimited axially on a second side by an adjustable-stroke piston in the cylinder,the piston having an annular circumferential piston step axially recessed in the piston relative to an annular circumferential piston crown, and which via an annular circumferential jet divider contour merges into a piston cavity axially recessed in the piston relative to the piston step,an injection nozzle situated in the cylinder head being associated with the particular ...

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Номер записи: 77
03-09-2015 дата публикации

FUEL-STRATIFIED COMBUSTION CHAMBER IN A DIRECT-INJECTED INTERNAL COMBUSTION ENGINE

Номер: US20150247444A2
Автор: JR. David J., Schouweiler
Принадлежит:

A combustion chamber is provided within an internal combustion engine, the chamber bounded by a cylinder bore, a primary end, and a secondary end. The secondary end reciprocates between a TDC position nearest the primary end and a BDC position. Induction and exhaust ports are timed to open and close to transfer air into, and gasses from, the chamber. The chamber becomes fuel stratified when the secondary end is positioned within a stratified distance of the primary end. When stratified, the chamber is comprised of a central region, a perimeter region, and a transfer passageway between regions. A fuel injector at the primary end injects fuel only into the central region and only prior to ignition. The perimeter region pumps air into the central region prior to ignition, creating tumble turbulence. Combustion is initiated near TDC in the central region and concluded near TDC in the transfer passageway. 1. A combustion chamber apparatus for use within an internal combustion engine , the apparatus comprising:a cylinder bore;a primary end;a secondary end; anda chamber volume bounded by the cylinder bore, the primary end, and the secondary end, the chamber volume based on a cylinder bore diameter and dependent on the position of the secondary end with reference to the primary end;wherein the cylinder bore is configured to seal to the primary end to prevent incidental leakage of chamber gasses;wherein the secondary end is configured to reciprocate within the cylinder bore between a top dead center (TDC) position nearest the primary end and a bottom dead center (BDC) position, and is configured to seal to the cylinder bore while reciprocating to prevent incidental leakage of chamber gasses;wherein the secondary end is configured to be linked to a crankshaft through a connecting rod for the purpose of exporting mechanical energy from the engine;wherein the chamber volume is configured to become fuel-stratified whenever the secondary end is closer than a stratified distance ...

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Номер записи: 78
24-08-2017 дата публикации

DIRECT FUEL INJECTION INTERNAL COMBUSTION ENGINE

Номер: US20170241366A1
Автор: Hironobu Hidekazu, Hirose Kenji, Hosogai Seiichi, KITANO Haruya, Nakajima Susumu, Okura Yasuhiro, Yamanaka Tatsuo, YOKOYAMA Naoki
Принадлежит: HONDA MOTOR CO., LTD.

A direct fuel injection internal combustion engine having an injector for directly injecting fuel into a combustion chamber thereof is provided. The engine is configured so that a tumble flow is generated in the combustion chamber. A fuel injection by the injector can be performed in a first injection mode and a second injection mode, the first injection mode being a mode in which the fuel injection is completed after the tumble flow is generated, and the second injection mode being a mode in which the fuel injection is completed before the tumble flow is generated. The fuel injection of the first injection mode is performed before completion of the warming-up of the engine, and the fuel injection of the second injection mode is performed after completion of the warming-up of the engine. 1. A direct fuel injection internal combustion engine which has an injector for directly injecting fuel into a combustion chamber thereof , and is configured so that a tumble flow is generated in said combustion chamber ,wherein fuel injection by said injector can be performed in a first injection mode and a second injection mode, the first injection mode being a mode in which the fuel injection is completed after the tumble flow is generated, and the second injection mode being a mode in which the fuel injection is completed before the tumble flow is generated,wherein the fuel injection of the first injection mode is performed before completion of the warming-up of said engine, and the fuel injection of the second injection mode is performed after completion of the warming-up of said engine.2. The direct fuel injection internal combustion engine according to claim 1 , wherein the fuel injection of the second injection mode is performed after completion of the warming-up of said engine and in a high rotational speed operating condition where the rotational speed of said engine is comparatively high.3. The direct fuel injection internal combustion engine according to claim 1 , ...

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Номер записи: 79
01-09-2016 дата публикации

Control device for compression ignition-type engine

Номер: US20160252031A1
Автор: Atsushi Inoue, Kazuhiro Nagatsu, Kota Matsumoto, Takashi Kaminaga, Takashi YOUSO, Toru Miyamoto
Принадлежит: Mazda Motor Corp

A control device for a compression ignition engine includes a controller configured to operate an engine body by compression ignition combustion when the engine body operates in a predetermined compression ignition range. When the engine body operates in a predetermined high load range of the compression ignition range, the controller maximizes a filling amount of the cylinder using a gas state adjustment system, and lowers an EGR ratio so that the air-fuel mixture in the cylinder is lean with an excess air ratio λ higher than 1 in a lower speed range, and maximizes the filling amount of the cylinder, and increases the EGR ratio so that the air-fuel mixture in the cylinder has the excess air ratio λ of 1 or lower in a higher speed range than the lower speed range.

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Номер записи: 80
30-08-2018 дата публикации

ENGINE CONTROL APPARATUS

Номер: US20180245510A1
Автор: TOBE Shota
Принадлежит:

An engine control apparatus is configured to control a direct injection engine that includes a combustion chamber and an intake system including an intake port. The engine control apparatus includes a cleaning component sensor and a mode controller. The cleaning component sensor is provided in a fuel system and configured to detect a cleaning component included in fuel. The fuel system includes a fuel tank and an injector and is configured to supply the fuel to the combustion chamber. The mode controller is configured to cause execution of a cleaning mode by the direct injection engine, under a state in which the cleaning component included in the fuel is higher than a threshold. The cleaning mode includes increasing an amount of a fuel-air mixture flowing back from the combustion chamber to the intake port. 1. An engine control apparatus configured to control a direct injection engine , the direct injection engine including a combustion chamber and an intake system , being able to execute a cleaning mode , and being configured to fuel into the combustion chamber , the intake system including an intake port that is in communication with the combustion chamber , and the cleaning mode including cleaning a deposit in the intake system , the engine control apparatus comprising:a cleaning component sensor provided in a fuel system and configured to detect a cleaning component included in the fuel, the fuel system including a fuel tank and an injector and being configured to suppl the fuel to the combustion chamber; anda mode controller configured to cause execution of the cleaning mode by the direct injection engine, under a state in which the cleaning component included in the fuel is higher than a threshold, the cleaning mode including increasing an amount of a fuel-air mixture flowing back from the combustion chamber to the intake port.2. The engine control apparatus according to claim 1 , whereinthe mode controller prohibits the execution of the cleaning mode in the ...

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Номер записи: 81
31-08-2017 дата публикации

CONTROL DEVICE FOR CYLINDER DIRECT INJECTION TYPE OF INTERNAL COMBUSTION ENGINE

Номер: US20170248086A1
Автор: HASHIMOTO Susumu, Yarino Motonari
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

The invention relates to a control device applied to a cylinder injection type of the engine (). The control device carries out a fuel injection while changing a penetration force of the injected fuel by changing a maximum value of a lift amount of the valve body () of the injector (). Further, the control device controls an ignition timing on the basis of the engine operation state. The control device changes an end timing of a preceding injection carried out immediately before the ignition timing such that a time period between the end timing of the preceding injection and the ignition timing under a state where a first value is set as the maximum value of the valve body lift amount in the preceding injection, is longer than a time period between the end timing of the preceding injection and the ignition timing under a state that a second value larger than the first value is set as the maximum value of the valve body lift amount in the preceding injection. 1. A control device applied to a cylinder injection type of an internal combustion engine , comprising:a spark plug provided with a spark generation part; andan injector provided with a movable valve body and an injection hole, said injector executing an injection of a fuel into a cylinder of said engine through said injection hole by a movement of said valve body and being provided such that a spray including at least a part of the injected fuel reaches said spark generation part directly,the device comprising a control part configured to:execute a fuel injection by said injector while changing a penetration force of the injected fuel by changing a maximum value of a lift amount of said valve body in said fuel injection; andcontrol an ignition timing for generating a spark by said spark generation part on the basis of an operation state of the engine,wherein said control part is configured to:execute the fuel injection immediately before the ignition timing as a preceding injection while controlling a timing of ...

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Номер записи: 82
17-09-2015 дата публикации

METHOD FOR MANAGING THE AMOUNT OF FUEL INJECTED INTO AN ENGINE

Номер: US20150260121A1
Автор: COURTIEL Claude
Принадлежит:

A method for managing the mass of fuel injected into the cylinder of an internal combustion engine fed by direct injection. The pressure and the pressure drop per unit of time are monitored () during the starting phase. If the pressure becomes too low (), or if it drops too quickly (), the mass of fuel injected on each cycle is adjusted () in order to maintain a high fuel pressure in the injector (). The method can be applied, for example, in the event of low-temperature starting using any type of fuel, for example pure or mixed ethanol. 1453145. Method for feeding an internal combustion engine by the direct injection of a mixture of fuel and combustion air into each cylinder () of the engine , the supply of fuel being performed at high pressure by a pump () providing an output flow situated in a higher interval of its operating range , characterized in that , in a preliminary fuel injection phase which precedes starting of the engine at low temperature , the mass of fuel delivered per cycle of operation of the engine , referred to as the injection mass (M) , is regulated in such a way that , when the pressure (P) of the fuel that is injected into a cylinder () decreases during this phase , this pressure (P) remains above a predetermined threshold value (P).215. Method as claimed in claim 1 , in which claim 1 , the injection phase being the preliminary phase which precedes the starting of the engine claim 1 , the regulation () of the injection mass (M) generally consists of an adjusted decrease.313157. Method as claimed in claim 1 , in which the pressure (P) of the injected fuel is controlled in real time (step ) and is corrected by an adjustment (step ) of the injection mass (M) in order to define a pressure gradient (G) such that the pressure (P) of the injected fuel remains greater () than the threshold value of the pressure (P).49. Method as claimed in claim 3 , in which the said pressure gradient (G) remains greater () than a determined threshold value (G). ...

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Номер записи: 83
29-09-2016 дата публикации

INTERNAL COMBUSTION ENGINE

Номер: US20160281589A1
Автор: ASHIZAWA Takeshi
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

An internal combustion engine includes: a spark plug arranged in the upper wall face of the combustion chamber; an in-cylinder injection valve that, when stratified charge combustion operation is performed, injects fuel into the combustion chamber so that a fuel spray is carried to the periphery of the spark plug by a tumble flow; a piston having, in a crown surface thereof, a concave portion formed so as to extend in an orthogonal direction to the axis line of a piston pin hole, and so that the depth changes in the direction of the axis line; and a bias flow generation apparatus that, in a case where stratified charge combustion operation is performed with an ignition timing retardation, generates a bias in a flow of intake air inside an intake port so that intake air is guided towards the relatively deep part in the direction of the axis line. 1. An internal combustion engine in which a tumble flow is generated inside a combustion chamber , comprising:a spark plug arranged in an upper wall face of the combustion chamber;an in-cylinder injection valve configured, when stratified charge combustion operation is performed, to inject fuel into the combustion chamber so that a fuel spray is carried to a periphery of the spark plug by a tumble flow;a piston having, in a crown surface thereof, a concave portion that is formed so as to extend in an orthogonal direction to an axis line of a piston pin hole and so that a depth of the concave portion changes in a direction of the axis line; anda bias flow generation apparatus configured, in a case where stratified charge combustion operation is performed in a state in which an ignition timing is retarded relative to an optimal ignition timing, to generate a bias in a flow of intake air inside an intake port so that intake air is guided towards a part at which the depth is relatively deep in the direction of the axis line inside the concave portion.2. The internal combustion engine according to claim 1 ,wherein the concave ...

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Номер записи: 84
27-09-2018 дата публикации

METHOD AND SYSTEM FOR AN ENGINE

Номер: US20180274474A1
Автор: Uphues Marc G.
Принадлежит:

Methods and systems are provided for fueling an engine of a vehicle during an exit from a deceleration fuel shut-off (DFSO) condition. In one example, a method may include fueling the engine using a compression stroke direct injection during the exit from the DFSO condition to reach a first engine torque threshold, and may further include increasing a separation between the compression stroke direct injection and a spark to gradually increase the engine torque to a second, higher engine torque threshold, and thereafter transitioning engine fueling from the compression stroke direct injection to an intake stroke direct injection. In this way, torque bumps may be reduced during DFSO exit. 1. A method , comprising:during an exit from a deceleration fuel shut-off (DFSO) condition, fueling an engine via a compression stroke direct injection (DI) at a first separation from a spark event until an engine torque reaches a first threshold, then increasing a separation between the compression stroke DI and the spark event until the engine torque reaches a second, higher threshold and thereafter transitioning engine fueling to an intake stroke DI.2. The method of claim 1 , wherein the first separation is a learned separation claim 1 , learned during a previous compression stroke DI fueling of the engine occurring prior to the DFSO condition.3. The method of claim 1 , wherein the engine torque is a net engine output torque and wherein the first separation provides a peak engine output torque that maintains an integrated mean effective pressure of an engine cylinder within a threshold pressure.4. The method of claim 1 , wherein prior to the exit from the DFSO condition claim 1 , the engine is decelerated with fuel injectors shut off.5. The method of claim 1 , wherein the separation includes a difference between a timing between fuel injecting timing and a timing of the spark event claim 1 , and wherein increasing the separation includes advancing the compression stroke DI while ...

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Номер записи: 85
25-12-2014 дата публикации

INTERNAL COMBUSTION ENGINE

Номер: US20140373805A1
Автор: SAKATA Tomohiro, TANAKA Daisuke, Uchida Ryo, Yoshimura Futoshi
Принадлежит: NISSAN MOTOR CO., LTD.

An internal combustion engine has a cylinder, a cylinder head mounted to the cylinder, a piston disposed in the cylinder, and a fuel injection valve. A combustion chamber is defined by the piston, the cylinder head and the cylinder. The fuel injection valve has a plurality of injection holes that injects fuel directly inside the cylinder from a side of the combustion chamber. The injection holes inject fuel in a spray shape with an overall shape, which is formed by a plurality of sprays being injected from the injection holes. The overall shape expands toward the cylinder head and forms one part of a conical shape that is dented near the piston. Central axes of some of the injection holes are oriented toward a boundary portion near the exhaust valve formed at a crown surface of the piston and an inner wall of the cylinder when fuel is injected. 1. An internal combustion engine having a combustion chamber defined by a piston and a cylinder , and a fuel injection valve having a plurality of injection holes and placed close to an intake valve so as to inject fuel directly inside the cylinder from the side of the combustion chamber , the internal combustion engine characterized in that:the plurality of injection holes are configured so that the spray shape which is the overall shape formed by the plurality of sprays injected from the plurality of injection holes in the fuel injection valve expands toward the cylinder head and forms one part of a conical shape that is dented near the piston; andeach of the central axes of a plurality of sprays injected from a plurality of specific injection holes is oriented toward a boundary portion near the exhaust valve formed at the piston position by the crown surface of the piston and the inner wall of the cylinder when fuel is injected, and among said plurality of injection holes, the central axis is oriented closer to the bottom dead center than to the boundary portion for the spray injected from one injection hole not included ...

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Номер записи: 86
25-12-2014 дата публикации

FUEL INJECTOR FOR MULTI-FUEL INJECTION WITH PRESSURE INTENSIFICATION AND A VARIABLE ORIFICE

Номер: US20140373806A1
Автор: Hou Deyang
Принадлежит:

A multi-fuel injector has an internal pressure intensifier which has means to intensify fuels with different viscosities, cetane or octane numbers, with high viscosity fuel being used to intensify both itself and low viscosity fuels to high pressure for direct injection into combustion chamber. A combustion method using such a method of fuel injection is also disclosed. A multi-fuel injector with variable orifice nozzle and variable spray patterns is also disclosed. 1. A fuel injection method , comprising steps of: (a) supplying a fuel injector with multiple low pressure fuels with different viscosities into pressure intensification chambers , (b) using a pressurized fuel with high viscosity from a pressure reservoir to intensify the low viscosity fuels in the intensification chambers through a pressure intensifier having piston surfaces with different sizes with a large surface facing and being driven by the said high viscosity fuel , and smaller piston surfaces and shoulder surfaces facing and pressurizing the said low viscosity fuels , (c) direct injecting the intensified low viscosity and high viscosity fuels into combustion chamber through a injection nozzle.2. A fuel injection method of claim 1 , further comprising steps of: supplying a fuel injector with multiple low pressure fuels with different viscosities claim 1 , cetane numbers claim 1 , and octane numbers claim 1 , into pressure intensification chambers claim 1 , and directly injecting the intensified fuels with different cetane numbers and octane numbers into combustion chamber through a injection nozzle.3. A fuel injection method of claim 1 , further comprising steps of supplying the high viscosity fuel from pressure reservoir into one of the intensification chambers such that the high viscosity fuel is also being further intensified by itself through the pressure intensifier among other low viscosity fuels for high pressure direct injection.4. A fuel injection method of claim 1 , further comprising ...

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Номер записи: 87
15-10-2015 дата публикации

ENGINE COMBUSTION CONTROL VIA FUEL REACTIVITY STRATIFICATION

Номер: US20150292391A1
Автор: Hanson Reed M., Kokjohn Sage L., Reitz Rolf Deneys, Splitter Derek A.
Принадлежит:

A compression ignition engine uses two or more fuel charges having two or more reactivities to control the timing and duration of combustion. In a preferred implementation, a lower-reactivity fuel charge is injected or otherwise introduced into the combustion chamber, preferably sufficiently early that it becomes at least substantially homogeneously dispersed within the chamber before a subsequent injection is made. One or more subsequent injections of higher-reactivity fuel charges are then made, and these preferably distribute the higher-reactivity matter within the lower-reactivity chamber space such that combustion begins in the higher-reactivity regions, and with the lower-reactivity regions following thereafter. By appropriately choosing the reactivities of the charges, their relative amounts, and their timing, combustion can be tailored to achieve optimal power output (and thus fuel efficiency), at controlled temperatures (and thus controlled NOx), and with controlled equivalence ratios (and thus controlled soot). 1. A compression ignition combustion method for an internal combustion engine , the method including the steps of:a. providing an initial fuel charge to a combustion chamber sufficiently prior to Top Dead Center (TDC) that the initial fuel charge is at least substantially homogeneously dispersed within the combustion chamber by a time halfway through a compression stroke; (1) wherein the subsequent fuel charge and initial fuel charge have different reactivities, and', '(2) such that the subsequent fuel charge defines a volume within the combustion chamber having different reactivity than the remainder of the combustion chamber; and, 'b. providing a subsequent fuel charge to the combustion chamber at 40 or more degrees prior to Top Dead Center (TDC)c. compressing the fuel charges until ignition occurs before the subsequent fuel charge can homogeneously disperse within the combustion chamber.2. The method of further including the step of providing ...

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Номер записи: 88
22-10-2015 дата публикации

Internal Combustion Engine, In Particular for a Motor Vehicle, and a Method for Operating Such an Internal Combustion Engine

Номер: US20150300240A1
Автор: BEZNER Martin, Fischer Juergen, GILDEIN Helmut, KADEN Arnold, SUNDHEIM Dirk
Принадлежит:

A motor vehicle internal combustion engine has at least one combustion chamber delimited by at least one wall of the internal combustion engine, and at least one injector that is associated with the combustion chamber and that is at least partially accommodated in a receiving opening delimited by a first wall area of the wall extending at least essentially parallel to the axial direction of the injector The injector includes at least one injection opening that opens into the combustion chamber via the receiving opening, in the direction of the combustion chamber the first wall area being directly adjoined by a further wall area of the wall that extends at an angle to the axial direction and which delimits an at least essentially conical area of the receiving opening which expands toward the combustion chamber. Over its length relative to the radial direction of the injector, the further wall area is situated at a distance from the injector and in alignment with the injector, at least in places, and has a cone opening angle in a range of 50 degrees up to and including 90 degrees, the cone opening angle being smaller than a jet angle of the injection jet. 110-. (canceled)11. An motor vehicle internal combustion engine , comprising:a combustion chamber delimited by a wall of the internal combustion engine; andan injector associated with the combustion chamber,wherein the injector is at least partially accommodated in a receiving opening delimited by a first wall area of the wall extending at least essentially parallel to an axial direction of the injector,wherein the injector has at least one injection opening that opens into the combustion chamber via the receiving opening,wherein in a direction of the combustion chamber the first wall area is directly adjoined by a further wall area of the wall that extends at an angle to the axial direction and which delimits an at least essentially conical area of the receiving opening expanding toward the combustion chamber, ...

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Номер записи: 89
19-09-2019 дата публикации

METHODS AND SYSTEMS FOR A FUEL INJECTOR

Номер: US20190285037A1
Автор: Zhang Xiaogang
Принадлежит:

Methods and systems are provided for a fuel injector. In one example, a system may include a fuel injector having a half-annular venturi shaped outlet passage arranged between an outlet surface of the fuel injector and a half-cone shaped end portion of a nozzle. The nozzle may further comprise one or more air entraining features working in tandem with the half-annular venturi outlet passage to promote air-fuel mixing. 1. A fuel injector comprising:a nozzle comprising a half-cylindrical stem and a half-conical end portion, and where an outlet passage comprises a half-annular venturi shape shaped to flow fuel when the nozzle is actuated toward a combustion chamber.2. The fuel injector of claim 1 , wherein the nozzle is a single continuous piece.3. The fuel injector of claim 1 , wherein the stem is physically coupled to the end portion at a first extreme end claim 1 , and where the stem is physically coupled to a platform at a second extreme end claim 1 , wherein the platform is a rectangular prism and physically coupled to each of an actuator and a plurality of springs.4. The fuel injector of claim 1 , wherein the end portion hermitically seals the outlet passage by pressing against an outlet surface of the fuel injector in a first position claim 1 , and where the end position is spaced away from the outlet surface to fluidly couple a sac to the combustion chamber when in a second position.5. The fuel injector of claim 1 , wherein the end portion is at least partially hollow and comprises one or more air entraining features configured to flow combustion chamber gases to the outlet passage.6. The fuel injector of claim 5 , wherein the air entraining features comprise a plurality of cylindrical passages extending from a base of the end portion to a venturi throat of the outlet passage.7. The fuel injector of claim 5 , wherein the air entraining features comprise a single cylindrical passage extending from a base of the end portion to a venturi throat of the outlet ...

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Номер записи: 90
05-11-2015 дата публикации

Compression Ignition Engine with Staged Ignition

Номер: US20150315957A1
Автор: Bergin Michael Joseph, Reitz Rolf Deneys, Rutland Christopher James, Wickman David D.
Принадлежит:

A compression ignition engine includes a piston having a barrier protruding axially therefrom. The barrier at least partly defines a combustion chamber having a first zone separated from a second zone by the barrier. An initial fuel charge is supplied into the combustion chamber, and a subsequent fuel charge is supplied into the first zone, the subsequent fuel charge having greater reactivity than the initial fuel charge. The fuel charges are compressed to induce ignition and combustion of the fuel charges, such that the subsequent fuel charge burns within the first zone to produce hot gases, and the hot gases flow across the barrier to effect combustion of the initial fuel charge within the second zone. 1. A compression ignition combustion method for an internal combustion engine , a first part and a second part of the internal combustion engine defining a combustion chamber , the combustion chamber defining an axial direction , wherein the first part and the second part are movable with respect to one another in the axial direction , and wherein the first part has formed thereon a barrier projecting in the axial direction , the barrier defining a first zone spaced radially from a second zone within the combustion chamber , the method comprising:supplying an initial fuel charge as an air/fuel mixture combined outside of the combustion chamber and injected through an inlet port into the combustion chamber;supplying a subsequent fuel charge into the first zone of the combustion chamber after the supplying of the initial fuel charge, the subsequent fuel charge, as injected, having greater reactivity than the initial fuel charge; andcompressing the fuel charges within the combustion chamber to induce ignition and combustion of the fuel charges, the ignition and combustion of the fuel charges including burning the subsequent fuel charge within the first zone to produce hot gases, and flowing the hot gases across the barrier to effect combustion of the initial fuel ...

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Номер записи: 91
19-11-2015 дата публикации

METHOD AND SYSTEM FOR IGNITION ENERGY CONTROL

Номер: US20150330290A1
Автор: Glugla Chris Paul, Huberts Garlan J.
Принадлежит: FORD GLOBAL TECHNOLOGIES, LLC

Methods and systems are provided for improving spark robustness. Spark ignition dwell commands are adjusted based on the fuel fraction delivered via direct injection relative to port injection. The approach allows ignition output to better match the ignition requirement of the given fuel combination.

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Номер записи: 92
01-10-2020 дата публикации

In-cylinder injection engine

Номер: US20200309020A1
Автор: Hiroya Ueda, Masafumi Taki, Yusuke MARUI
Принадлежит: Honda Motor Co Ltd

An in-cylinder injection engine includes: a cylinder head that includes a gasket surface stacked on a seating face of a cylinder block and defines a combustion chamber between a piston and a ceiling surface gradually receding from an imaginary plane including the gasket surface in going toward a center of the cylinder head; two intake ports disposed side by side and opened in the ceiling surface of the cylinder head; and a fuel injection valve mounted to the cylinder head and having an injection port facing the combustion chamber at a position between an opening of the intake port and the gasket surface. The intake port is formed to have a shape of introducing an airflow laterally into the combustion chamber along the imaginary plane. Accordingly, the in-cylinder injection engine can reduce attachment of injected fuel to a wall surface of a cylinder bore.

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Номер записи: 93
16-11-2017 дата публикации

DIRECTLY-INJECTING GAS INJECTOR PROVIDING IMPROVED COOLING

Номер: US20170328310A1
Автор: HOHL Guenther
Принадлежит:

A gas injector for injecting a gaseous fuel directly into a combustion chamber of an internal combustion engine includes a valve-closing element for releasing and sealing a through opening at a sealing seat; a shielding element, which is situated at an end of the valve-closing element on a side of the combustion chamber and which shields the valve-closing element and the sealing seat with respect to the combustion chamber; and a cooling ring having a first contact area designed for direct contact with the shielding element and a second contact area designed for direct contact with a component of the internal combustion engine, in particular with a cylinder head. 111-. (canceled)12. A gas injector for injecting a gaseous fuel directly into a combustion chamber of an internal combustion engine , comprising:a valve-closing element for releasing and closing a through opening at a sealing seat;a shielding element at an end of the valve-closing element on a side of the combustion chamber, wherein the shielding element shields the valve-closing element and the sealing seat with respect to the combustion chamber; anda cooling ring including (a) a first contact area designed for direct contact with the shielding element and (b) a second contact area designed for direct contact with a component of the internal combustion engine, in particular a cylinder head.13. The gas injector of claim 12 , wherein the cooling ring covers the sealing seat in a radial direction of the gas injector.14. The gas injector of claim 12 , wherein an outer periphery or inner periphery of the cooling ring has a profiling.15. The gas injector of claim 12 , wherein an outer periphery or inner periphery of the cooling ring has a tooth shaped profile.16. The gas injector of claim 12 , wherein the cooling ring is a crinkled spring washer.17. The gas injector of claim 12 , wherein the cooling ring is connected to the shielding element with a welded joint.18. The gas injector of claim 12 , wherein the ...

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Номер записи: 94
24-11-2016 дата публикации

CONTROL DEVICE FOR SPARK-IGNITION ENGINE

Номер: US20160341145A1
Автор: Nishio Takafumi, YASUDA Kyohei
Принадлежит: MAZDA MOTOR CORPORATION

A controller (an engine controller ) allows a fuel to be fed into a cylinder within a range from an intake stroke to a compression stroke, if an engine body (an engine ) is at a low temperature which is equal to or below a predetermined temperature and is under a load which is equal to or greater than a predetermined load. The controller instructs a fuel injection valve to inject a greater amount of the fuel during the compression stroke than during the intake stroke if the content of an unconventional fuel in the fuel is higher than a predetermined level, and to inject a greater amount of the fuel during the intake stroke than during the compression stroke if the content of the unconventional fuel in the fuel is equal to or lower than the predetermined level. 1. A control device for a spark-ignition engine , the device comprising:an engine body configured to run with a fuel including at least one of gasoline and an unconventional fuel, of which the vaporization rate is lower, at or below a specific temperature, than that of the gasoline;a fuel feeder which includes a fuel injection valve injecting the fuel, and is configured to feed the fuel through the fuel injection valve into a cylinder provided for the engine body;a throttle valve configured to have an increased opening when the engine body is under a heavy load, and a decreased opening when the engine body is under a light load; anda controller configured to operate the engine body by controlling at least the fuel feeder, wherein allow the fuel to be fed into the cylinder, within a range from an intake stroke to a compression stroke, if the engine body is at a low temperature which is equal to or below a predetermined temperature, and is under a load which is equal to or greater than a predetermined load, and instruct the fuel injection valve (i) to inject a greater amount of the fuel during the compression stroke than during the intake stroke if the content of the unconventional fuel in the fuel is higher ...

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Номер записи: 95
08-12-2016 дата публикации

METHOD AND SYSTEM FOR ENGINE COLD-START CONTROL

Номер: US20160356228A1
Автор: Dudar Aed M., Fried Marcus William, Liu Chingpo, Reichenbach Ron
Принадлежит:

Methods and systems are provided for improving engine start roughness. In one example, a method for reducing engine start NVH includes operating the engine with a split fuel injection while advancing injection timing as engine coolant temperature increases. The method allows for a smoother engine start while also reducing false misfire incidences. 1. A method for an engine , comprising:starting an engine with fuel delivered as a split injection; andadjusting a fuel injection timing based on engine temperature, the injection timing advanced as the engine temperature at the engine starting increases.2. The method of claim 1 , wherein the split injection includes a first fraction of fuel direct injected earlier during a compression stroke of a combustion cycle and a second fraction of fuel direct injected later during the compression stroke of the combustion cycle.3. The method of claim 2 , wherein the injection timing is an average injection timing of the first and second fractions.4. The method of claim 2 , wherein advancing the injection timing includes increasing/decreasing/maintaining a duration between injection of the first fraction and injection of the second fraction.5. The method of claim 1 , wherein the injection timing is advanced from an initial injection timing as the engine temperature increases claim 1 , the initial injection timing based on engine speed and load.6. The method of claim 1 , wherein the injection timing is advanced from compression stroke TDC as the engine temperature increases.7. The method of claim 6 , further comprising claim 6 , maintaining the fuel injection timing advanced for a number of combustion events since a first combustion event of the engine start.8. The method of claim 7 , further comprising claim 7 , after the number of combustion events since the first combustion event claim 7 , retarding the injection timing towards compression stroke TDC as engine temperature increases.9. The method of claim 1 , further comprising ...

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Номер записи: 96
24-12-2015 дата публикации

OPTIMIZED FUEL MANAGEMENT SYSTEM FOR DIRECT INJECTION ETHANOL ENHANCEMENT OF GASOLINE ENGINES

Номер: US20150369117A1
Автор: Bromberg Leslie, Cohn Daniel R., Heywood John B.
Принадлежит:

Fuel management system for enhanced operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder. It is preferred that the direct injection occur after the inlet valve is closed. It is also preferred that stoichiometric operation with a three way catalyst be used to minimize emissions. In addition, it is also preferred that the anti-knock agents have a heat of vaporization per unit of combustion energy that is at least three times that of gasoline. 1. A fuel management system for spark ignition engine where the fuel management system controls fueling from a first fueling system that directly injects fuel into at least one cylinder as a liquid and increases knock suppression by evaporative cooling and from a second fueling system that injects fuel into a region outside of the cylinder;and where there is a range of torque where both fueling systems are used at the same value of manifold pressure;and where the fraction of fuel in the cylinder that is introduced by the first fueling system increases with increasing manifold pressure so as to prevent knock by providing increased knock resistance;and where the fuel management system controls the change in the fraction of fuel introduced by the first fueling system using closed loop control that utilizes a sensor that detects knock and where open loop control is also used;and where the open loop control uses an engine map lookup table;and where open loop control is used during transients.2. The fuel management system of where the maximum knock suppression that is employed is provided by a combination of fueling from the first and second fueling systems.3. The fuel management system of or where use of the second fueling system in addition to the first fueling system is employed to obtain combustion stability.4. The fuel management system of where fuel from the first fueling system is introduced when the engine torque is above a selected value.5. The fuel ...

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Номер записи: 97
20-03-2018 дата публикации

Fuel-stratified combustion chamber in a direct-injected internal combustion engine

Номер: US9920684B2
Автор: David J. Schouweiler, Jr.
Принадлежит: Dave Schouweiler

A combustion chamber is provided within an internal combustion engine, the chamber bounded by a cylinder bore, a primary end, and a secondary end. The secondary end reciprocates between a TDC position nearest the primary end and a BDC position. Induction and exhaust ports are timed to open and close to transfer air into, and gasses from, the chamber. The chamber becomes fuel stratified when the secondary end is positioned within a stratified distance of the primary end. When stratified, the chamber is comprised of a central region, a perimeter region, and a transfer passageway between regions. A fuel injector at the primary end injects fuel only into the central region and only prior to ignition. The perimeter region pumps air into the central region prior to ignition, creating tumble turbulence. Combustion is initiated near TDC in the central region and concluded near TDC in the transfer passageway.

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Номер записи: 98
16-02-1985 дата публикации

層状給気エンジン

Номер: JPS6030417A
Автор: Haruo Okimoto, Hiroyuki Oda, Masakimi Kono, Takashige Tokushima, Takeshi Matsuoka, 博之 小田, 徳島　孝成, 松岡　孟, 沖本　晴男, 河野　誠公
Принадлежит: Mazda Motor Corp

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

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Номер записи: 99
30-07-2013 дата публикации

Two engine system with a gaseous fuel stored in liquefied form

Номер: CA2716283C
Автор: Mark E. Dunn, Valerie LeBlanc
Принадлежит: Westport Power Inc

A gaseous fuelled two engine system is disclosed comprising a high pressure direct injection engine as the main power source and an auxiliary fumigated engine that can be fuelled with vapor removed from a storage tank that stores the gaseous fuel in liquefied form at cryogenic temperatures. The fuel supply system comprises a cryogenic pump for raising the pressure of the fuel to the injection pressure needed for the high pressure direct injection engine, and the cryogenic pump is powered by the auxiliary fumigated engine.

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Номер записи: 100