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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 3955. Отображено 100.
05-01-2012 дата публикации

Device and method for controlling fuel injection in an engine depending on the exhaust gas partial recirculation rate

Номер: US20120004834A1
Автор: Bruno Serra, Sylvain Hourlier
Принадлежит: RENAULT SAS

A device for controlling fuel injection in an internal combustion engine of an automobile, the internal combustion engine being connected at an inlet thereof to a fresh air intake pipe and at an outlet thereof to an exhaust gas discharge pipe including a catalytic converter, an exhaust gas partial recirculation circuit connecting the discharge pipe to the fresh air intake pipe. The device includes a mechanism determining the amount of unburned fuel in the exhaust gases, a mechanism determining the amount of fresh air taken into the internal combustion engine, and an electronic controller determining the amount of fuel to be injected depending on signals received of the determined amount of unburned fuel and the determined amount of fresh air taken in.

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Номер записи: 1
27-05-2015 дата публикации

Система для указания воды в датчике кислорода на основании потребляемой мощности нагревателя датчика

Номер: RU0000152379U1
Автор: Гопичандра СУРНИЛЛА, Дэниел А. МАКЛЕД, Ричард И. СОЛТИС, Тимоти Джозеф КЛАРК
Принадлежит: ФОРД ГЛОУБАЛ ТЕКНОЛОДЖИЗ, ЭлЭлСи

1. Система для двигателя, содержащая:впускной коллектор, включающий в себя впускной дроссель;охладитель наддувочного воздуха, расположенный выше по потоку от впускного коллектора;датчик кислорода, расположенный на выходе охладителя наддувочного воздуха, при этом датчик кислорода включает в себя нагревательный элемент; иконтроллер с машинно-читаемыми командами для указания воды в датчике кислорода в ответ на увеличение потребляемой мощности нагревательного элемента датчика кислорода более высокое, чем пороговое значение, во время выбранного состояния.2. Система по п.1, в которой машинно-читаемые команды дополнительно включают в себя команды для настройки условий эксплуатации двигателя на основании указания воды в датчике кислорода, причем условия эксплуатации двигателя включают в себя одно или более из открывания впускного дросселя и установки момента зажигания, при этом выбранное состояние чувствительно к влажности окружающей среды, большей, чем пороговое значение. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 152 379 U1 (51) МПК F02B 29/04 (2006.01) F02D 45/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ (21)(22) Заявка: ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2014133365/06, 13.08.2014 (24) Дата начала отсчета срока действия патента: 13.08.2014 Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): СУРНИЛЛА Гопичандра (US), СОЛТИС Ричард И. (US), МАКЛЕД Дэниел А. (US), КЛАРК Тимоти Джозеф (US) (45) Опубликовано: 27.05.2015 Бюл. № 15 1 5 2 3 7 9 R U (57) Формула полезной модели 1. Система для двигателя, содержащая: впускной коллектор, включающий в себя впускной дроссель; охладитель наддувочного воздуха, расположенный выше по потоку от впускного коллектора; датчик кислорода, расположенный на выходе охладителя наддувочного воздуха, при этом датчик кислорода включает в себя нагревательный элемент; и контроллер с машинно-читаемыми командами для указания воды в датчике кислорода в ответ на увеличение потребляемой мощности нагревательного ...

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Номер записи: 2
10-06-2015 дата публикации

Система для датчика кислорода

Номер: RU0000152517U1
Автор: Гопичандра СУРНИЛЛА, Дэниел Джозеф СТАЙЛЗ, Мэттью Джон ГЕРХАРТ, Тимоти Джозеф КЛАРК
Принадлежит: ФОРД ГЛОУБАЛ ТЕКНОЛОДЖИЗ, ЭлЭлСи

1. Система двигателя, содержащая:двигатель, включающий в себя впускной коллектор;турбонагнетатель, включающий в себя турбину в системе выпуска и компрессор в системе впуска;охладитель наддувочного воздуха, присоединенный ниже по потоку от компрессора;датчик кислорода на впуске, присоединенный к впускному коллектору ниже по потоку от охладителя наддувочного воздуха и выше по потоку от впускного дросселя;датчик давления, присоединенный к впускному коллектору ниже по потоку от охладителя наддувочного воздуха и выше по потоку от впускного дросселя;систему рециркуляции отработавших газов (EGR), включающую в себя канал EGR и клапан EGR, для рециркуляции отработавших остаточных газов из местоположения ниже по потоку от турбины в местоположение выше по потоку от компрессора; иконтроллер с машиночитаемыми командами для:во время состояния перекрытия топлива при замедлении двигателя,изучения опорной точки для упомянутого датчика кислорода при опорном давлении на впуске; инастройки открывания клапана EGR на основании концентрации кислорода на впуске, оцененной упомянутым датчиком относительно изученной опорной точки, и дополнительно на основании давления на впуске относительно опорного давления на впуске.2. Система по п. 1, дополнительно содержащая датчиквлажности для оценки влажности окружающей среды, причем контроллер включает в себя дополнительные команды для дополнительной настройки открывания клапана EGR на основании влажности окружающей среды относительно опорной влажности. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК F02M 25/07 F02D 23/00 F02D 41/00 G01M 15/02 (13) 152 517 U1 (2006.01) (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ (21)(22) Заявка: ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2014139711/06, 30.09.2014 (24) Дата начала отсчета срока действия патента: 30.09.2014 Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): КЛАРК Тимоти Джозеф (US), СУРНИЛЛА Гопичандра (US), ГЕРХАРТ Мэттью Джон (US), СТАЙЛЗ Дэниел ...

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Номер записи: 3
01-03-2012 дата публикации

Modulating hydrodynamic flow characteristics to alleviate automotive heat exchanger contamination

Номер: US20120048245A1
Автор: Alexander Knafl, Patrick G. Szymkowicz
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A vehicular heat exchanger processes a exhaust gas recirculation flow. A method to manage combustion by-product contaminant deposits within the heat exchanger includes repeatedly cycling a flow control device controlling the exhaust gas recirculation flow through the heat exchanger from an original position to an intermediate position and back to the original position. The original position is determined based upon a required exhaust gas recirculation flow into an intake manifold.

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Номер записи: 4
03-05-2012 дата публикации

Egr controller for internal combustion engine

Номер: US20120109493A1
Автор: Hiroyuki TAKEZOE
Принадлежит: Denso Corp

By means of an air model, an estimated quantity of an exhaust gas flowing into a cylinder and a target quantity of the exhaust gas are computed. A deviation between the estimated quantity and the target quantity is multiplied by a feedback gain to obtain a feedback correction quantity. A reference opening degree of an EGR valve is defined according to an engine driving condition and the feedback correction quantity is added to the reference opening degree to obtain a command opening degree of the EGR valve. According to the engine driving condition and the deviation between the estimated quantity and the target quantity, a feedback gain is established so that control accuracy and control stability of a feedback control can be ensured.

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Номер записи: 5
17-05-2012 дата публикации

Transient control strategy in spark-assisted hcci combustion mode

Номер: US20120118275A1
Автор: Chen-Fang Chang, Hanho Yun, Jun-Mo Kang
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A method for controlling a multi-cylinder direct-injection internal combustion engine includes establishing an external exhaust gas recirculation valve from a present position to a target position to achieve a target exhaust gas recirculation, and synchronizing combustion initiation timing with actual exhaust gas recirculation as actual exhaust gas recirculation changes from a first exhaust gas recirculation value corresponding to the present position of the external exhaust gas recirculation valve to a second exhaust gas recirculation value corresponding to the target position of the external exhaust gas recirculation valve.

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Номер записи: 6
14-06-2012 дата публикации

Internal combustion engine

Номер: US20120144806A1
Автор: Hiroshi Kuzuyama, Takehito Hamamatsu, Tsutomu Umehara
Принадлежит: Toyota Industries Corp

An internal combustion engine, in which intake air flows through an intake passage into a combustion chamber and exhaust gas resulting from the combustion in the combustion chamber flows through an exhaust passage, includes an exhaust gas purifier provided in the exhaust passage and having an oxidation catalyst, an LPL-EGR passage connecting between the intake passage and the exhaust passage at a position downstream of the exhaust gas purifier as seen in exhaust gas flow direction, a first estimating device for estimating exhaust gas composition at a position upstream of the exhaust gas purifier, a second estimating device for estimating exhaust gas composition at a position downstream of the exhaust gas purifier, a cylinder temperature adjusting device for adjusting temperature in the combustion chamber, and a controller for controlling the cylinder temperature adjusting device based on the difference in the exhaust gas composition between the first and second estimating devices.

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Номер записи: 7
29-11-2012 дата публикации

System and Method to Control an Electronically-Controlled Turbocharger

Номер: US20120297767A1
Автор: Peter Hofbauer
Принадлежит: EcoMotors International Inc

By providing an electrically-controlled turbocharger (ECT) on a compression-ignition (CI) engine, the engine can be provided a desired lambda and a desired EGR fraction over the range of operating conditions. When lambda in the exhaust is leaner than the desired lambda, electrical energy to the electric motor of the ECT is reduced to bring actual lambda to desired lambda. Analogously, when lambda in the exhaust is richer than the desired lambda, electrical energy to the ECT is increased.

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Номер записи: 8
20-12-2012 дата публикации

System and method for controlling exhaust gas recirculation

Номер: US20120323469A1
Автор: John R. Bucknell
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A control system for an engine includes first and second modules. The first module estimates a total amount of exhaust gas recirculation (EGR) in the engine, wherein the total amount of EGR includes (i) EGR within cylinders of the engine and (ii) EGR flowing through an EGR system of the engine. The second module selectively controls an overlap of intake and exhaust valve timing in the engine based on (i) a position of an EGR valve in the EGR system and (ii) a comparison of the estimated total amount of EGR in the engine and an EGR threshold.

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Номер записи: 9
30-05-2013 дата публикации

Control device for internal combustion engine

Номер: US20130138324A1
Автор: Taku Ibuki
Принадлежит: Toyota Motor Corp

The present invention relates to a control device for an internal combustion engine including: a first control subject 52 and a second control subject 35 D respectively capable of directly controlling a first control amount Regr and a second control amount Pim interacting with each other; a means for setting a target value of the first control amount as a first target control amount and setting a target value of the second control amount as a second target control amount; and a means for controlling the first control amount at the first target control amount and controlling the second control amount at the second target control amount. Further, in the present invention, a first target control amount TRegr is set as the target value of the first control amount capable of controlling the first control amount with a predetermined followability taking account of at least one of a first operation speed Krie, Krde as the operation speed of the first control subject and a degree of influence Ksee of the first control subject on the first control amount and at least one of a second operation speed Kriv, Krdv as the operation speed of the second control subject and a degree of influence Ksev of the second control subject on the first control amount.

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Номер записи: 10
06-06-2013 дата публикации

Exhaust gas recirculation device for internal combustion engine

Номер: US20130139794A1
Автор: Kazunari Ide, Takaharu Hiroe, Tomohide Yamada
Принадлежит: Mitsubishi Heavy Industries Ltd

An exhaust gas recirculation device for an internal combustion engine includes: an opening command signal output unit 52 which outputs an opening command signal in relation to an EGR control valve on the basis of an operating condition of the internal combustion engine; a variation component separation unit 54 which separates the valve opening command signal from the opening command signal output unit 52 into a basic component and a variation component generated so as to be superimposed on the basic component; a variation component determination unit 56 which determines whether the EGR control valve is in a steady state or a transient state on the basis of a magnitude of the variation component separated by the variation component separation unit 54 ; and an EGR control valve diagnosis device 58 that performs an abnormality diagnosis on the EGR control valve when the variation component determination unit determines that the EGR control valve is in the steady state.

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Номер записи: 11
22-08-2013 дата публикации

Exhaust gas recirculation valve contaminant removal

Номер: US20130213007A1
Автор: Amit Ashok Surve, James Eickmeyer, Jeremy Harden, Kerk B. McKeon, Scott A. Henry, T. Andrew Craig, Timothy R. Evans
Принадлежит: Cummins Inc

An exhaust gas purification system including an exhaust gas passageway which routes a flow of exhaust gas from an exhaust gas source to an intake manifold; an exhaust gas passageway valve which controls flow to the intake manifold; a cooling system coupled with the exhaust passageway positioned at a location upstream of the exhaust gas source and downstream of the intake manifold and operable to transfer heat from the flow of exhaust gas to a coolant in flow communication with the cooling system; a bypass passageway coupled with the exhaust gas passageway and bypassing the cooling system; a bypass valve operable to control flow through the bypass passageway; at least one valve operation sensor; and a controller operable to control the bypass valve to direct the flow of exhaust gas to the bypass passageway during exhaust gas recirculation based on a signal from the valve operation sensor.

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Номер записи: 12
29-08-2013 дата публикации

Systems and methods for adjusting an estimated flow rate of exhaust gas passing through an exhaust gas recirculation valve

Номер: US20130226435A1
Автор: Gregory J. York, Jon C. Wasberg, Layne K. Wiggins, Martino Casetti, Vijay Ramappan
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A system according to the principles of the present disclosure includes a volumetric efficiency adjustment module and an exhaust gas recirculation (EGR) flow adjustment module. The volumetric efficiency adjustment module adjusts an estimated volumetric efficiency of an engine based on a mass flow rate of air entering the engine. The EGR flow adjustment module selectively adjusts an estimated mass flow rate of exhaust gas passing through an EGR valve based on an amount by which the volumetric efficiency adjustment module adjusts the volumetric efficiency.

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Номер записи: 13
31-10-2013 дата публикации

System and method for controlling an internal combustion engine for a motor vehicle in transit

Номер: US20130289852A1
Автор: Laurent Fontvieille, Olivier Grondin, Philippe Moulin, Yohann Petillon
Принадлежит: RENAULT SAS

A system for controlling a diesel internal combustion engine including a circuit for partially recirculating exhaust gases, including a mechanism estimating set values of intake-air parameters; a mechanism estimating richness of the exhaust gas; a mechanism determining a set value of the intake richness according to set values of the intake-air parameters; and a mechanism correcting at least one of the set values of the intake-air parameters according to the estimation of the richness of the exhaust gas and the richness set value.

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Номер записи: 14
28-11-2013 дата публикации

Exhaust air injection

Номер: US20130312407A1
Автор: Giovanni Cavataio, Gopichandra Surnilla
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Embodiments for controlling exhaust air-fuel ratio are provided. In one example, an engine method comprises adjusting upstream exhaust air-fuel ratio to maintain a first emission control device at or below a threshold temperature, and when the upstream exhaust air-fuel ratio is below a threshold, injecting air into an exhaust passage between the first emission control device and a second emission control device to maintain downstream exhaust at a different, higher air-fuel ratio. In this way, excess emissions may be converted while maintain the emission control devices below a maximum temperature.

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Номер записи: 15
27-02-2014 дата публикации

Twin scroll turbocharger with egr takeoffs

Номер: US20140053550A1
Автор: Brad Boyer, Daniel Joseph Styles, James Leiby, Lawrence Marshall
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Systems and methods for operating a twin scroll turbocharged engine with a junction configured to selectively control exhaust gas delivery to an exhaust gas recirculation system and a twin scroll turbine are provided.

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Номер записи: 16
07-01-2016 дата публикации

TWIN SCROLL TURBOCHARGER WITH EGR TAKEOFFS

Номер: US20160003132A1
Автор: Boyer Brad, Leiby James, Marshall Lawrence, Styles Daniel Joseph
Принадлежит:

Systems and methods for operating a twin scroll turbocharged engine with a junction configured to selectively control exhaust gas delivery to an exhaust gas recirculation system and a twin scroll turbine are provided. 1. A turbocharged in-line engine system comprising:a first scroll and a second scroll fluidically coupled to a turbine, the first scroll coupled to a first set of inner engine cylinders, the second scroll coupled to a second set of outer engine cylinders;a first EGR takeoff including a first valve, the first EGR takeoff fluidically coupled to the first scroll;a second EGR takeoff including a second valve, the second EGR takeoff fluidically coupled to the second scroll, the first and second valves coupled in a common housing, the first and second valves being dual butterfly valves where the dual butterfly valves are coupled to a common rotating shaft;a turbine wastegate coupled around the turbine; andan EGR conduit coupled to the first and second EGR takeoffs.2. The engine system of claim 1 , further comprising instructions to, during a first condition close the first and second valves; and', 'instructions to, during a second condition open the first and second valves., 'a computer readable storage medium having instructions encoded thereon, including3. The engine system of claim 2 , wherein the first condition includes high load and low speed engine operating conditions.4. The engine system of claim 2 , wherein the second condition includes high load and high speed engine operating conditions.5. The engine system of claim 1 , wherein the dual butterfly valves include a coolant circulating therethrough.6. The engine system of claim 1 , wherein the first and second valves are configured to open and close synchronously.7. The engine system of claim 2 , wherein the instructions further include instructions to close the first and second valves during engine accelerations.8. The engine system of claim 5 , wherein the common housing has a dual-bored body ...

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Номер записи: 17
04-01-2018 дата публикации

Methods and systems for open loop and closed loop control of an exhaust gas recirculation system

Номер: US20180003114A1
Автор: Freeman Carter Gates, Kirk Pulay, Stephen George Russ
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Methods and systems are provided for estimating exhaust gas recirculation (EGR) flow in an engine including an EGR system. In one example, a method may include operating the EGR system in an open loop feed forward mode based on an intake carbon di oxide sensor output above a threshold engine load and/or when a manifold absolute pressure (MAP) is above a threshold pressure, and operating the EGR system in a closed loop feedback mode based on a differential pressure sensor output when the engine load decreases below the threshold load and/or when the MAP decreases below the threshold pressure.

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Номер записи: 18
07-01-2021 дата публикации

Engine system

Номер: US20210003086A1
Автор: Gaku Ito
Принадлежит: Subaru Corp

An engine system includes an intake pipe, an exhaust pipe, an exhaust gas recirculation (EGR) pipe, an injection amount deriver, and a fuel injector. The intake pipe is configured to direct intake air into a combustion chamber of an engine. The exhaust pipe is configured to receive exhaust gas discharged from the combustion chamber. The EGR pipe is coupled to the exhaust pipe and the intake pipe and configured to recirculate the exhaust gas into the intake pipe as EGR gas. The injection amount deriver is configured to derive a target injection amount of fuel using a mass of air contained in the EGR gas or a mass of fuel contained in the EGR gas and using a preset target air excess coefficient. The fuel injector is configured to inject an amount of fuel corresponding to the target injection amount derived by the injection amount deriver into the combustion chamber.

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Номер записи: 19
03-01-2019 дата публикации

SYSTEMS AND METHODS FOR A SPLIT EXHAUST ENGINE SYSTEM

Номер: US20190003412A1
Автор: Surnilla Gopichandra, Ulrey Joseph Norman
Принадлежит:

Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation to an intake passage via a first exhaust manifold and exhaust gas to an exhaust passage via a second exhaust manifold. In one example, an amount of opening overlap between a plurality of intake valves and a first set of exhaust valves coupled to the first exhaust manifold may be adjusted responsive to a transition from an estimated combustion air-fuel content to a leaner air-fuel content of the blowthrough air on a cylinder to cylinder basis. As one example, the transition may be determined from an output of an oxygen sensor positioned within the first exhaust manifold or an exhaust runner of each of the first set of exhaust valves. 1. A method , comprising:flowing boosted blowthrough air from a plurality of intake valves to a first exhaust manifold coupled to an intake passage via a first set of exhaust valves;flowing combusted gases to an exhaust passage via a second set of exhaust valves; andadjusting an amount of opening overlap between the plurality of intake valves and the first set of exhaust valves responsive to a measured oxygen content in the first exhaust manifold and a desired exhaust gas recirculation (EGR) flow rate of combusted gases from the first set of exhaust valves to the intake passage.2. The method of claim 1 , wherein each cylinder includes one exhaust valve of the first set of exhaust valves claim 1 , one exhaust valve of the second set of exhaust valves claim 1 , and one intake valve of the plurality of intake valves and wherein each exhaust valve of the first set of exhaust valves opens at a different time in an engine cycle.3. The method of claim 2 , wherein the measured oxygen content is obtained from an oxygen sensor positioned in the first exhaust manifold while the one exhaust valve of the first set of exhaust valves for a corresponding cylinder is open.4. The method of claim 2 , wherein the measured ...

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Номер записи: 20
12-01-2017 дата публикации

COORDINATION OF CAM TIMING AND BLOW-THROUGH AIR DELIVERY

Номер: US20170009644A1
Автор: BELL DAVID, Richards Adam J., Rollinger John Eric, Wade Robert Andrew
Принадлежит:

Methods and systems are provided for reducing turbo lag by directing intake air from an intake manifold to an exhaust manifold. The intake air may be directed via an EGR passage by opening an EGR valve or by may be directed via engine cylinders by increasing positive valve overlap. Amounts of air directed via external EGR and air directed via positive valve overlap are based on engine operating conditions. 1. A method for an engine , comprising:directing intake air from an intake manifold, downstream of a compressor, to an exhaust manifold, upstream of a turbine via each of external EGR and positive valve overlap through a cylinder, wherein amounts of air directed via EGR and air directed via positive valve overlap are adjusted based on conditions.2. The method of claim 1 , wherein the directing is in response to a tip-in event.3. The method of claim 2 , wherein directing intake air via external EGR includes opening an EGR valve in an EGR passage coupled between the intake manifold claim 2 , downstream of the compressor claim 2 , and the exhaust manifold upstream of the turbine.4. The method of claim 3 , wherein directing intake air via positive valve overlap includes adjusting a variable cam timing device to adjust an intake and/or exhaust valve timing of the cylinder from a first valve timing corresponding to no positive valve overlap to a second valve timing corresponding to positive intake valve to exhaust valve overlap.5. The method of claim 4 , wherein adjusting amounts of air directed via EGR and air directed via positive valve overlap includes claim 4 , if a change in engine torque corresponding to the variable cam timing device adjustment is higher than a threshold amount claim 4 , increasing the amount of air directed via external EGR while decreasing the amount of air directed via positive valve overlap.6. The method of claim 4 , wherein adjusting the amounts of air directed via EGR and air directed via positive valve overlap includes claim 4 , if a ...

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Номер записи: 21
12-01-2017 дата публикации

CONTROL DEVICE AND CONTROL METHOD FOR DIESEL ENGINE

Номер: US20170009676A1
Автор: SANO Shigehisa, UEHARA Isshou
Принадлежит:

A control device for diesel engine controls a diesel engine with a turbo charger that coaxially joins an intake compressor and an exhaust turbine, and drives the intake compressor with energy of exhaust gas which flows into the exhaust turbine to pressurize intake air, and a fresh air/secondary air supply device that supplies fresh air or secondary air to an exhaust passage upstream of the exhaust turbine. The control device for diesel engine includes a gas flow stagnation region determination means that determines whether engine operation conditions or a state of the turbo charger are/is in a gas flow stagnation region, and a fresh air/secondary air supply means that supplies fresh air or secondary air to the exhaust passage upstream of the exhaust turbine by the fresh air/secondary air supply device when the engine operation conditions or the state of the turbo charger are/is in a gas flow stagnation region. 1: A control device for diesel engine , comprising:a turbo charger that coaxially joins an intake compressor and an exhaust turbine, and drives the intake compressor with energy of exhaust gas which flows into the exhaust turbine to pressurize intake air;a fresh air/secondary air supply device configured to supply fresh air or secondary air to an exhaust passage upstream of the exhaust turbine;a controller that is programmed to:determine whether engine operation conditions are in a gas flow stagnation region;supply fresh air or secondary air to the exhaust passage upstream of the exhaust turbine by the fresh air/secondary air supply device when the engine operation conditions are in a gas flow stagnation region, in which an engine torque does not increase even when a fuel injection amount is increased and in which fresh air or secondary air can be supplied to the exhaust passage upstream of the exhaust turbine.2: A control device for diesel engine , comprising:a turbo charger that coaxially joins an intake compressor and an exhaust turbine, and drives the ...

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Номер записи: 22
12-01-2017 дата публикации

CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

Номер: US20170009682A1
Автор: OGAWA Ken, OKUNISHI Shinichi
Принадлежит: HONDA MOTOR CO., LTD.

A control device includes a cylinder pressure sensor, a driving condition detector, a reference crank angle setter, a reference cylinder pressure calculator, an EGR ratio estimator, and a controller. The cylinder pressure sensor detects a cylinder pressure inside a cylinder. The driving condition detector detects a driving condition in an internal combustion engine. The reference crank angle setter calculates, according to the driving condition, a reference crank angle immediately before which mixture gas starts combusting. The reference cylinder pressure calculator calculates a reference cylinder pressure at the reference crank angle based on temperature characteristics of a heat capacity ratio of the mixture gas under a condition. The EGR ratio estimator calculates an EGR ratio based on a pressure difference between the reference cylinder pressure and the cylinder pressure at the reference crank angle. The controller controls the internal combustion engine according to the EGR ratio. 1. A control device for an internal combustion engine including an EGR device that , concurrently with direct injection of a fuel into a cylinder , recirculates a portion of an exhaust gas discharged to an exhaust passage from the cylinder back to an intake passage as an external EGR gas , the control device comprising:an in-cylinder pressure sensor that detects a pressure inside the cylinder as an in-cylinder pressure;a driving condition detector that detects a driving condition of the internal combustion engine;a reference crank angle setter that obtains a crank angle immediately before start of combustion of a mixture gas charged in the cylinder depending on the detected driving condition of the internal combustion engine, and sets the obtained crank angle as a reference crank angle;a reference in-cylinder pressure calculator that calculates, as a reference in-cylinder pressure, a pressure inside the cylinder expected to occur at the set reference crank angle, based on a ...

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Номер записи: 23
12-01-2017 дата публикации

DRIVING DEVICE FOR DRIVING A VEHICLE AS WELL AS METHOD AND COMPUTER PROGRAM PRODUCT FOR OPERATING THIS DRIVING DEVICE

Номер: US20170009709A1
Автор: CLOOS Lutz Kilian, GLAHN Claus Juergen
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A driving device for driving a vehicle includes an internal combustion engine, a feed line for feeding combustion air to the internal combustion engine, a discharge line for discharging exhaust gases from the internal combustion engine, a charge air cooler that is arranged in the feed line for cooling the combustion air, and a recirculation line branching off the discharge line for recirculating the exhaust gas from the discharge line into the feed line. The recirculation line includes a bypass line that the exhaust gas can be fed to the internal combustion engine through the charge air cooler and/or bypassing the charge air cooler. 115-. (canceled)16. A driving device for driving a vehicle , comprisingan internal combustion engine;a feed line configured to feed combustion air to the internal combustion engine;a discharge line configured to discharge exhaust gases from the internal combustion engine;a charge air cooler in fluid communication with the feed line and configured to cool the combustion air;a recirculation line branching off the discharge line and configured to recirculate the exhaust gas from the discharge line into the feed line, wherein exhaust gases can be fed by the recirculation line to the internal combustion engine through the charge air cooler; anda bypass line configured to feed exhaust gas can be fed to the internal combustion engine bypassing the charge air cooler.17. The driving device according to claim 16 , wherein the bypass line communicates with the recirculation line and the driving device further comprises a shut-off and directional control device configured to interacts with the recirculation line and the bypass line to shut off the recirculation line or direct the recirculated exhaust gas through the charge air cooler or to the internal combustion engine bypassing the charge air cooler.18. The driving device according to claim 17 , wherein the shut-off and directional control device comprises an actuating device settable in at least ...

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Номер записи: 24
27-01-2022 дата публикации

SYSTEM AND METHOD FOR PREDICTING VALIDITY OF NOx SENSOR OUTPUT

Номер: US20220025806A1
Автор: Dean Pennala, Frank M. Korpics, Jim Bromham, Justin Trzeciak
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Methods and systems for operating an engine that includes a controller and a NOx sensor are described. In one example, output of the NOx sensor is selectively made available to software modules within the controller when an offset in NOx sensor output is not expected. If the offset in NOx sensor output is expected, the NOx sensor output may not be made available to the software modules.

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Номер записи: 25
14-01-2016 дата публикации

METHOD FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE

Номер: US20160010581A1
Автор: Sivasubramanian Arvind, SIXEL Eike Joachim, Stubbs Adam, WESTER Daniel
Принадлежит: CATERPILLAR MOTOREN GMBH & CO. KG

A method for controlling an internal combustion engine is disclosed. The method may include receiving knock data corresponding to knock levels over a time period. The method may also include determining from the knock data whether the knock levels change over the time period. Further, the method may include determining that a variation in the gas composition of the gaseous fuel supplied to the internal combustion engine has occurred when the knock levels change over the time period. In addition, the method may include adjusting an operating condition of the internal combustion engine to adapt a knock susceptibility of the internal combustion engine to the varying gas composition. 1. A method for controlling an internal combustion engine operating at least partly on gaseous fuel with a varying gas composition , the method comprising:receiving a knock data corresponding to knock levels over a time period;determining from the knock data whether the knock levels change over the time period;determining that a variation in the gas composition of the gaseous fuel supplied to the internal combustion engine has occurred when the knock levels change over the time period; andadjusting an operating condition of the internal combustion engine to adapt a knock susceptibility of the internal combustion engine to the varying gas composition.2. The method of claim 1 , wherein the knock data correspond to the knock levels received over the time period of at least 4 combustion cycles.3. The method of claim 1 , further comprising:determining whether the knock levels are within a preset knock level range and below a preset knock level threshold.4. The method of claim 3 , further comprising: the preset knock level threshold is set in the range from 1% to 10%,', 'the preset knock level range is set in the range from 0% to 10%, and', 'the preset knock margin range is set in the range from 0% to 5%., 'setting the preset knock level threshold, the preset knock level and the preset knock ...

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Номер записи: 26
11-01-2018 дата публикации

Method and system for controlling supercharger of vehicle

Номер: US20180010533A1
Автор: Hyo Sang Cho, Seung Eun YU
Принадлежит: Hyundai Motor Co

A method for controlling a supercharger of a vehicle includes: determining, at a first determination step, whether or not an engine operates in a cylinder deactivation (CDA) mode; calculating, at a second determination step, a difference value between a target boost pressure of a turbocharger and a current boost pressure of intake air boosted by the turbocharger, and determining whether or not the difference value is equal to or greater than a reference difference value; determining, at a third determination step, based on a current operating condition of the engine whether or not the supercharger is allowed to operate; determining, at a fourth determination step, a target rpm of the supercharger, and determining whether or not the target rpm is equal to or greater than a reference rpm; and operating the supercharger at an operating step.

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Номер записи: 27
03-02-2022 дата публикации

SYSTEM AND METHOD FOR OPERATING AN ENGINE IN A FUEL CUT-OUT MODE

Номер: US20220034271A1
Автор: Glugla Chris Paul, Kiwan Rani, Surnilla Gopichandra
Принадлежит:

Methods and systems for operating an engine that includes adjustable poppet valve timing and an exhaust gas recirculation valve are described. In one example, the exhaust gas recirculation valve is opened and the timing of the poppet valves is retarded so that an amount of fresh air that is pumped by the engine to an after treatment device may be reduced. 1. An engine operating method , comprising:adjusting intake valve closing timing and closing an exhaust gas recirculation valve of an engine via a controller in response to an engine exiting a fuel cut-out mode.2. The engine method of claim 1 , further comprising adjusting a throttle of the engine in response to exiting the fuel cut-out mode claim 1 , the throttle adjusted to meet a driver demand torque.3. The engine method of claim 1 , where adjusting intake valve closing timing includes advancing intake valve closing timing.4. The engine method of claim 1 , further comprising activating one or more cylinders via injecting fuel to the one or more cylinders in response to the an engine exiting the fuel cut-out mode.5. The engine method of claim 1 , where the exhaust gas recirculation valve is included in a high pressure exhaust gas recirculation system.6. The engine method of claim 1 , where the exhaust gas recirculation valve is included in a low pressure exhaust gas recirculation system.7. The engine method of claim 1 , where the engine exits the fuel cut-out mode in response to a position of a pedal.8. The engine method of claim 1 , where the exhaust gas recirculation valve is partially closed.9. An engine system claim 1 , comprising:an engine including a high pressure exhaust gas recirculation (EGR) valve and poppet valves; anda controller including executable instructions stored in non-transitory memory that cause the controller to close the high pressure EGR valve and adjust timing of the poppet valves in response a pedal being applied while the engine is rotating without being fueled following an engine stop ...

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Номер записи: 28
18-01-2018 дата публикации

EXHAUST EMISSION CONTROL SYSTEM OF ENGINE

Номер: US20180017002A1
Автор: Kanno Masanobu, Nishimura Hiroyuki, Tanimura Kenji
Принадлежит:

An exhaust emission control system of an engine is provided, which includes a NOcatalyst disposed in an exhaust passage for storing NOwithin exhaust gas when an air-fuel ratio of the exhaust gas is lean, and reducing the stored NOwhen the air-fuel ratio is approximately stoichiometric or rich. A processor executes a NOreduction controlling module for performing a NOreduction control in which a fuel injector performs a post injection to control the air-fuel ratio to a target ratio, and an EGR controlling module for controlling an EGR valve to recirculate EGR gas. In the NOreduction control, the EGR controlling module controls an opening of the EGR valve to a target opening smaller than when the NOreduction control is not performed. The NOreduction controlling module starts the control after the EGR valve opening is controlled to the target opening. 1. An exhaust emission control system of an engine , including a NOcatalyst disposed in an exhaust passage of the engine for storing NOwithin exhaust gas when an air-fuel ratio of the exhaust gas is lean , and reducing the stored NOwhen the air-fuel ratio is approximately stoichiometric or rich , the exhaust emission control system comprising a processor configured to execute:{'sub': x', 'x', 'x', 'x, 'a NOreduction controlling module for performing a NOreduction control in which a fuel injector performs a post injection of fuel to control the air-fuel ratio to a target air-fuel ratio so that the stored NOis reduced, the target air-fuel ratio being a ratio at which the stored NOis reducible; and'}an exhaust gas recirculation (EGR) controlling module for controlling an EGR valve disposed in an EGR passage connected to the exhaust passage and an intake passage of the engine, to recirculate EGR gas from the exhaust passage to the intake passage at a flow rate according to an operating state of the engine, wherein{'sub': x', 'x', 'x', 'x, 'when the NOreduction controlling module performs the NOreduction control, the EGR ...

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Номер записи: 29
17-01-2019 дата публикации

CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE

Номер: US20190017454A1
Автор: Hashizume Takeshi, Katayama Masaaki
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A control apparatus for an internal combustion engine according to the invention is applied to an internal combustion engine in which EGR gas and condensed water generated by an EGR cooler are supplied into a cylinder. The control apparatus calculates an equivalence ratio of the internal combustion engine, and controls an EGR valve and a condensed water supply valve such that, when the equivalence ratio is high, a supply rate of the condensed water increases and a supply rate of the EGR gas decreases relative to when the equivalence ratio is low. 15-. (canceled)6. A control apparatus for an internal combustion engine configured to inject fuel into a cylinder , the internal combustion engine includingan EGR apparatus configured to supply a part of exhaust gas into the cylinder as EGR gas, andcomponent proportion modifying means configured to modify proportions of water and carbon dioxide in the EGR gas, the control apparatus comprising an electronic control unit configured to(i) calculate an equivalence ratio of the internal combustion engine, and(ii) control the component proportion modifying means such that, when the equivalence ratio is high, a proportion of water in the EGR gas increases and a proportion of carbon dioxide in the EGR gas decreases relative to when the equivalence ratio is low.7. The control apparatus according to claim 6 , whereinthe electronic control unit is configured to calculate the equivalence ratio on the basis of an operating condition of the internal combustion engine.8. The control apparatus according to claim 6 , whereinthe electronic control unit is configured to control the component proportion modifying means such that the proportion of carbon dioxide in the EGR gas in a case where the equivalence ratio is lower than a predetermined value becomes lower before warm-up of the internal combustion engine is complete than after warm-up of the internal combustion engine is complete.9. The control apparatus according to claim 6 , wherein ...

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Номер записи: 30
16-01-2020 дата публикации

Valve duty differentiated exhaust gas recirculation control method and exhaust gas recirculation system

Номер: US20200018250A1
Автор: Hyun-Woo NOH, Jin-Suk Kang, Ki-Min PARK
Принадлежит: Hyundai Motor Co, Kia Motors Corp

An exhaust gas recirculation (EGR) control method includes a valve duty differentiated control including: detecting, by a controller, an engine operation region, a mixer region, and an external factor region as a valve control condition for an EGR valve duty correction variable for controlling an EGR system; applying, by the controller, the EGR valve duty correction variable to an EGR valve duty, which is set by a target air amount to an intake air amount, to calculate a minimum EGR valve duty; and outputting, by the controller, the calculated minimum EGR valve duty to an EGR valve as the EGR valve duty.

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Номер записи: 31
16-01-2020 дата публикации

ENGINE CONTROLLER AND ENGINE CONTROL METHOD

Номер: US20200018253A1
Автор: ANAMI Takahiro, KURITA Shunsuke, Shibata Hiroyuki, YAMADA Takafumi
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A first intake air amount an engine is calculated based on a detected value of an intake air flow rate of an air flowmeter. A second intake air amount is calculated based on any one of a detected value of an intake pipe pressure and a throttle opening degree instead of the detected value of the intake air flow rate. When it is determined that the intake pulsation is not large, a difference amount of the second intake air amount from the first intake air amount is calculated. A corrected second intake air amount, which is a sum of the second intake air amount and the difference amount, is set as an intake air amount calculated value when it is determined that the intake pulsation is large. 1. An engine controller configured to execute:a first intake air amount calculation process for calculating a first intake air amount, which serves as a calculated value of an intake air amount of an engine, based on a detected value of an intake air flow rate of an air flowmeter;a second intake air amount calculation process for calculating a second intake air amount, which serves as a calculated value of an intake air amount of the engine, based on any one of a detected value of an intake pipe pressure and a throttle opening degree instead of the detected value of the intake air flow rate;a determination process for determining whether intake pulsation in an intake passage of the engine is large;a difference amount calculation process for, when determining in the determination process that the intake pulsation is not large, calculating a difference amount of the second intake air amount from the first intake air amount; setting the first intake air amount as an intake air amount calculated value of the engine when determining in the determination process that the intake pulsation is not large, and', 'setting a corrected second intake air amount, which is a sum of the second intake air amount and the difference amount, as the intake air amount calculated value when determining in ...

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Номер записи: 32
26-01-2017 дата публикации

CONTROL APPARATUS OF PREMIXED CHARGE COMPRESSION IGNITION ENGINE

Номер: US20170022924A1
Автор: Araki Keiji, Fujimoto Masahiko, Yamashita Hiroyuki
Принадлежит:

A control apparatus of a premixed charge compression ignition engine that includes an engine body having a cylinder and intake and exhaust passages, and causes a mixture gas to self-ignite inside the cylinder is provided. The apparatus includes a fuel injector for injecting fuel into the cylinder, a water injector for injecting supercritical water or subcritical water into the cylinder, an EGR passage for communicating the exhaust and intake passages and recirculating, as EGR gas, a portion of an exhaust gas discharged from the cylinder to the intake passage, an EGR valve for adjusting an EGR gas recirculation amount, and a controller. The controller includes an engine load determining module for receiving a parameter and determining whether an engine operating state is a first state where the engine load is below a switch load or a second state where the engine load is the switch load or above. 1. A control apparatus of a premixed charge compression ignition engine that includes an engine body having a cylinder , an intake passage , and an exhaust passage , and causes a mixture gas to self-ignite inside the cylinder , comprising:a fuel injector for injecting fuel into the cylinder;a water injector for injecting one of supercritical water and subcritical water into the cylinder in a period from a latter half of compression stroke and an early half of expansion stroke;an exhaust gas recirculation (EGR) passage for communicating the exhaust passage with the intake passage and recirculating, as EGR gas, a portion of an exhaust gas discharged from the cylinder to the intake passage;an EGR valve for adjusting an amount of the EGR gas recirculating to the intake passage through the EGR passage; anda controller for controlling various parts of the engine, the various parts including the water injector and the EGR valve,wherein the controller includes an engine load determining module for receiving a parameter of a load of the engine that varies based on an accelerator ...

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Номер записи: 33
25-01-2018 дата публикации

SYSTEM AND METHODS FOR EXTRACTING WATER FROM EXHAUST GASES FOR WATER INJECTION

Номер: US20180023522A1
Автор: Hakeem Mohannad, House Christopher, Shelby Michael Howard, Styles Daniel Joseph, Surnilla Gopichandra, VanDerWege Brad Alan
Принадлежит:

Methods and systems are provided for flowing exhaust through a second cooler, arranged downstream of a first cooler and upstream of an intake in an exhaust gas recirculation passage, and extracting condensate for water injection from condensate in cooled exhaust gas exiting the second cooler. In one example, a method may include adjusting the amount of exhaust gas flowing through the second cooler based on an amount of water stored at a water storage tank of a water injection system and engine operating conditions. Further, the method may include selectively flowing exhaust gas from the second cooler to a location upstream or downstream of a compressor in response to engine operating conditions. 1. A method , comprising:flowing exhaust gas through a second cooler, the second cooler arranged downstream of a first cooler in a passage disposed between an exhaust and intake of an engine; andselectively directing the flow of exhaust gas from the second cooler to each of the intake upstream of a compressor and the intake downstream of the compressor based on a first operating condition.2. The method of claim 1 , further comprising adjusting the flow of exhaust gas through the second cooler based on a second operating condition and extracting condensate from the exhaust gas flowing through the second cooler.3. The method of claim 2 , wherein extracting condensate include separating condensate entrained within the exhaust gas exiting the second cooler claim 2 , flowing the extracted condensate to a reservoir of a water injection system claim 2 , and flowing the exhaust gas to the intake either upstream or downstream of the compressor.4. The method of claim 2 , further comprising storing the extracted condensate in a reservoir and injecting the stored condensate into an intake manifold upstream of cylinders of the engine.5. The method of claim 4 , wherein the second operating condition includes one or more of an amount of the stored extracted condensate and a desired amount ...

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Номер записи: 34
24-01-2019 дата публикации

SMOKE AMOUNT ESTIMATION DEVICE AND COMBUSTION SYSTEM CONTROL DEVICE

Номер: US20190024597A1
Автор: Hoshi Shinya, OKABAYASHI Atsunori
Принадлежит:

A smoke amount estimation device includes a component amount acquisition unit and an estimation unit. The component amount acquisition unit acquires the amount of aromatic components contained in a fuel to be used for the combustion of an internal combustion engine, and acquires the amount of aromatic variable components that are components that decompose and polymerize before combustion to form aromatic components among components contained in the fuel. The estimation unit estimates the amount of smoke contained in the exhaust gas discharged from the internal combustion engine based on the amount of aromatic components and the amount of aromatic variable components acquired by the component amount acquisition unit. 1. A smoke amount estimation device comprising:a component amount acquisition unit that acquires an amount of aromatic components contained in a fuel to be used for combustion of an internal combustion engine, and acquires an amount of aromatic variable components that are components that decompose and polymerize before combustion to form aromatic components among components contained in the fuel; andan estimation unit that estimates an amount of smoke contained in exhaust gas discharged from the internal combustion engine based on the amount of aromatic components and the amount of aromatic variable components acquired by the component amount acquisition unit.2. The smoke amount estimation device according to claim 1 , whereinat least naphthene components are contained in the aromatic variable components whose amount is to be acquired by the component amount acquisition unit.3. The smoke amount estimation device according to claim 2 , whereinat least naphthene components, each having a structure having two or more of cyclic structures, are contained in the naphthene components whose amount is to be acquired by the component amount acquisition unit.4. The smoke amount estimation device according to claim 1 , whereinat least isoparaffin components are ...

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Номер записи: 35
24-01-2019 дата публикации

Internal combustion engine control apparatus

Номер: US20190024600A1
Автор: Kazuhiro Oryoji, Seiji Asano, Yoshihiko Akagi
Принадлежит: HITACHI AUTOMOTIVE SYSTEMS LTD

Fuel injection control of an internal combustion engine requires an optimized fuel amount that can be burned completely with oxygen in intake air to be supplied, but the oxygen concentration in the atmospheric air is affected by humidity. By separately calculating a dry air flow rate that directly affects the oxygen amount and a humidity flow rate that is a change factor of the oxygen concentration in the intake air of the internal combustion engine, the fuel can be supplied to the cylinder of the internal combustion engine at an optimized air-fuel ratio. In addition, highly precise control involving EGR for flowback of a part of the exhaust gas flowing in the exhaust pipe to the intake pipe can also be achieved.

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Номер записи: 36
23-01-2020 дата публикации

Engine controls including direct targeting of in-cylinder

Номер: US20200025121A1
Автор: Gayatri Adi, Paul V. MOONJELLY, Quresh SUTARWALA
Принадлежит: Cummins Inc

Unique engine controls and apparatuses, methods and systems relating to the same are disclosed. One embodiment is method which utilizes an in-cylinder [O2] mass fraction model to generate exhaust gas recirculation (EGR) fraction references for both transient and steady state operating conditions. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the following description and drawings.

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Номер записи: 37
02-02-2017 дата публикации

SUPERCHARGER WITH EXHAUST GAS RECIRCULATION

Номер: US20170030308A1
Автор: Friederichs Hanno, Kemmerling Joerg, Kindl Helmut Matthias, Kuske Andreas, Smiljanovski Vanco, Sommerhoff Franz Arnd
Принадлежит:

An engine, methods and systems are provided for supercharging charge air for internal combustion engines. The engine having an intake, and a blower with at least one impeller in the intake mounted on a rotatable shaft. An EGR line opens into the intake system upstream of the at least one impeller to form a junction point. A flap, pivotable about an axis running transversely with respect to the intake air flow, has: a first position which blocks the intake by way of a front side, and which opens up the EGR line; and a second position to cover the EGR line and open intake system wherein the flap is not planar, and has, at least on the front side thereof, at least one deformation as an unevenness. 1. A supercharged internal combustion engine havingan intake system for the supply of a charge-air flow;an exhaust-gas discharge system for the discharge of exhaust gas;at least one blower arranged in the intake system, which blower is equipped with at least one impeller which is mounted, in a housing, on a rotatable shaft;an exhaust-gas recirculation arrangement comprising a recirculation line which branches off from the exhaust-gas discharge system and which opens into the intake system upstream of the at least one impeller so as to form a junction point, the recirculation line branching off upstream of a turbine arranged in the exhaust-gas discharge system; anda flap which is delimited circumferentially by an edge and which is arranged in the intake system at the junction point and which is pivotable about an axis running transversely with respect to the fresh-air flow, in such a way that the flap, in a first end position, by way of a front side, blocks the intake system and opens up the recirculation line, and in a second end position, by way of a rear side, covers the recirculation line and opens up the intake system, [{'b': '3', 'the flap () is not planar, and'}, {'b': 3', '4, 'has, at least on the front side (′), at least one deformation () as an unevenness.'}], ' ...

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Номер записи: 38
31-01-2019 дата публикации

SYSTEMS AND METHODS FOR A SPLIT EXHAUST ENGINE SYSTEM

Номер: US20190032579A1
Автор: Boyer Brad Alan, Leiby James, Madison Daniel Paul, Ulrey Joseph Norman
Принадлежит:

Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation to an intake passage via a first exhaust manifold and exhaust gas to an exhaust passage via a second exhaust manifold. In one example, an intake valve timing, exhaust valve timing of a first set of exhaust valves coupled to the first exhaust manifold, and a position of an exhaust gas recirculation (EGR) valve in an EGR passage may be adjusted in coordination with one another in response to a condition at a compressor. The EGR passage may be coupled between the intake passage, upstream of the compressor, and the first exhaust manifold. 1. A method , comprising:adjusting, in coordination, an intake valve timing, an exhaust valve timing of a first set of exhaust valves, and a position of an exhaust gas recirculation (EGR) valve in an EGR passage in response to a condition at a compressor, where the EGR passage is coupled between an intake passage, upstream of the compressor, and a first exhaust manifold coupled to the first set of exhaust valves, and adjusting a position of a bypass valve disposed in a bypass passage based on the adjustment of the position of the EGR valve, the bypass passage coupled between the first exhaust manifold and an exhaust passage, downstream of a turbine, where the exhaust passage is coupled to a second exhaust manifold coupled to a second set of exhaust valves.2. The method of claim 1 , wherein adjusting in coordination includes first adjusting the exhaust valve timing and then adjusting one of the intake valve timing or the position of the EGR valve in response to the exhaust valve timing reaching a maximum amount of adjustment and based on the condition at the compressor and a current intake valve timing.3. The method of claim 2 , wherein the condition at the compressor includes one or more of condensate forming at the compressor and an inlet temperature of the compressor being below a threshold inlet ...

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Номер записи: 39
31-01-2019 дата публикации

SYSTEMS AND METHODS FOR IDENTIFYING A STUCK OPEN EXHAUST GAS RECIRCULATION VALVE

Номер: US20190032590A1
Автор: Conis Peter
Принадлежит:

Methods and systems are provided for determining whether an exhaust gas recirculation (EGR) valve is degraded and being held open in a vehicle system. In one example, a method may include, in response to an engine pull-down request, closing a throttle coupled to an intake manifold of the engine, closing the EGR valve, propelling the vehicle via an electric motor, and checking operation of the EGR valve based on both intake manifold pressure and exhaust pressure. For example, if the intake manifold pressure does not decrease by a threshold amount relative to the exhaust pressure, EGR valve degradation may be indicated. 1. A method , comprising:propelling a vehicle by an engine having a throttle coupled to an intake manifold;recirculating a portion of engine exhaust to the intake manifold through an exhaust gas recirculation (EGR) valve; andchecking operation of the EGR valve, based on both intake manifold pressure and exhaust pressure, after closing the throttle and the EGR valve when propelling the vehicle with an electric motor while the engine spins down to rest.2. The method of claim 1 , wherein the checking operation of the EGR valve commences after the vehicle transitions from being propelled by the engine to being propelled by the electric motor and concludes when the engine is at rest.3. The method of claim 2 , further comprising shutting off fuel supplied to the engine during the checking operation of the EGR valve.4. The method of claim 1 , wherein the EGR valve is not coupled to a position sensor.5. The method of claim 1 , wherein the EGR valve is positioned by a stepper motor.6. The method of claim 1 , wherein the checking operation of the EGR valve includes one or more of determining a difference between the intake manifold pressure and the exhaust pressure and determining a ratio of the intake manifold pressure to the exhaust pressure.7. The method of claim 6 , further comprising:in response to one or more of the difference between the intake manifold ...

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Номер записи: 40
31-01-2019 дата публикации

SYSTEMS AND METHODS FOR DIAGNOSING A VEHICLE HUMIDITY SENSOR

Номер: US20190032591A1
Автор: Dudar Aed M.
Принадлежит:

Methods and systems are provided for diagnosing a humidity sensor positioned in an intake system of a vehicle engine system. In one example, a method comprises rotating an engine unfueled in reverse and injecting a fluid into an exhaust system of the engine system, to draw the fluid into the intake system, where a humidity sensor output signal greater than a baseline output signal by a predetermined threshold is indicative of a humidity sensor that is functioning as desired. In this way, a humidity sensor may be periodically rationalized which may prolong engine lifetime by ensuring the engine is operating at optimal parameters. 1. A method comprising:obtaining a baseline humidity measurement via a humidity sensor positioned in an intake system of an engine;while rotating the engine unfueled in a reverse direction, injecting a fluid into an exhaust system coupled to the engine which is drawn by the engine into the intake system; andrationalizing the humidity sensor as a function of a humidity measurement of the injected fluid by the humidity sensor and the baseline humidity measurement.2. The method of claim 1 , wherein the fluid comprises diesel exhaust fluid.3. The method of claim 1 , wherein obtaining the baseline humidity measurement comprises commanding a throttle positioned in the intake system to a predetermined open position to couple the intake system and humidity sensor to atmosphere just prior to rotating the engine unfueled in the reverse direction.4. The method of claim 3 , wherein obtaining the baseline humidity measurement and rationalizing the humidity sensor via rotating the engine unfueled in reverse and injecting the fluid into the exhaust is commenced responsive to a predetermined duration of time elapsing since a vehicle-off event claim 3 , where rationalizing the humidity sensor is requested during the vehicle-off event.5. The method of claim 1 , further comprising claim 1 , rotating the engine in reverse at a predetermined engine speed.6. The ...

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Номер записи: 41
31-01-2019 дата публикации

CONTROL SYSTEM FOR ENGINE

Номер: US20190032593A1
Автор: Kanno Masanobu, Nishimura Hiroyuki, TOMITA Yoshiaki
Принадлежит:

A control system for an engine is provided, which includes an engine body formed with a cylinder, a NOcatalyst, an oxidation catalyst, a PM filter, a fuel injector configured to perform a main injection and a post injection, and a controller configured to execute a DeNOcontrol in which the fuel injector is controlled to perform the main and post injections so that an air-fuel ratio of exhaust gas is brought close to the stoichiometric air-fuel ratio or becomes rich and fuel supplied into the cylinder by the post injection combusts therein, and a filter regenerating control in which the fuel injector is controlled to perform the main and post injections so that the air-fuel ratio becomes lean and the fuel supplied into the cylinder by the post injection causes no combustion therein, the controller executing the DeNOcontrol and the filter regenerating control consecutively in this order. 1. A control system for an engine , comprising:an engine body formed with a cylinder;{'sub': x', 'x', 'x, 'a NOcatalyst provided in an exhaust passage through which exhaust gas discharged from the engine body flows, and configured to store NOwithin the exhaust gas when an air-fuel ratio of the exhaust gas is lean, and reduce and release the stored NOwhen the air-fuel ratio of the exhaust gas is close to a stoichiometric air-fuel ratio or rich;'}{'sub': x', 'x, 'an oxidation catalyst provided integrally with the NOcatalyst or in the exhaust passage upstream of the NOcatalyst and configured to oxidize unburned fuel within the exhaust gas;'}a particulate matter (PM) filter provided in the exhaust passage downstream of the oxidation catalyst and configured to capture particulate matter within the exhaust gas;a fuel injector configured to perform a main injection in which fuel is injected into the cylinder to obtain an engine torque and a post injection in which fuel is injected into the cylinder at a timing later than the main injection; and [{'sub': 'x', 'a DeNOcontrol in which the fuel ...

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Номер записи: 42
30-01-2020 дата публикации

Control system for compression ignition engine

Номер: US20200032717A1
Автор: Kenko Ujihara, Masayoshi HIGASHIO, Shinji Takayama, Yugou Sunagare, Yuta Masuda, Yuto Matsushima
Принадлежит: Mazda Motor Corp

A control system for a compression ignition engine is provided, which includes a combustion chamber, a throttle valve, an injector, an ignition, a swirl control valve, a sensor and a controller. The controller is configured to execute a first mode module, a second mode module, and a changing module to change an engine mode from a first mode to a second mode in response to a change demand. The changing module outputs signals to the throttle valve and the injector in response to the demand so that an air-fuel ratio of mixture gas becomes a stoichiometric air-fuel ratio, and outputs a signal to the swirl control valve so that an EGR gas amount decreases more than before the demand, and when the EGR gas amount is determined to be decreased to a given amount, the changing module causes the second mode module to start the second mode.

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Номер записи: 43
30-01-2020 дата публикации

METHOD OF CALCULATING EXHAUST GAS RECIRCULATION RATE USING COMBUSTION PRESSURE OF CYLINDER

Номер: US20200032726A1
Автор: HAN Dong Hee, HONG Seungwoo, Jung Donghyuk, Kim HakSu, LEE Hyungbok, Park Yeongseop, Sunwoo Myoungho
Принадлежит:

A method of calculating an exhaust gas recirculation (EGR) rate using combustion pressure of a cylinder of an internal combustion engine includes: detecting, by a pressure sensor, the combustion pressure of the cylinder in real time; calculating, by a processor, a data characteristic of a combustion pressure waveform per cycle through principal component analysis based on the detected combustion pressure of the cylinder; calculating, by the processor, a moment of the combustion pressure waveform per cycle by calculating a probability distribution based on the detected combustion pressure of the cylinder; calculating, by the processor, the EGR rate using the calculated data characteristic, the calculated moment, and engine operating conditions; and controlling, by the processor, the EGR rate based on the calculated EGR rate and a target EGR rate. 1. A method of calculating an exhaust gas recirculation (EGR) rate using a combustion pressure of a cylinder of an internal combustion engine , the method comprising steps of:detecting, by a pressure sensor, the combustion pressure of the cylinder in real time;calculating, by a processor, a data characteristic of a combustion pressure waveform per cycle through a principal component analysis (PCA) based on the detected combustion pressure of the cylinder;calculating, by the processor, a moment of the combustion pressure waveform per cycle by calculating a probability distribution based on the detected combustion pressure of the cylinder;calculating, by the processor, the EGR rate using the calculated data characteristic, the calculated moment, and engine operating conditions; andcontrolling, by the processor, the EGR rate based on the calculated EGR rate and a target EGR rate.2. The method of claim 1 ,wherein, in the step of calculating the data characteristic, a data set of combustion pressure waveform at each cycle is obtained such that a singular vector is calculated from a singular value decomposition (SVD) from the ...

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Номер записи: 44
30-01-2020 дата публикации

Control system

Номер: US20200032727A1
Автор: Hayato Nakada, Takeshi Sano
Принадлежит: Toyota Motor Corp

A control system includes an electronic control unit including a feedback controller and a reference governor. The feedback controller is configured to determine a value of control input such that a value of control output approximates a target value. The reference governor is configured to calculate, with a prediction model, a predicted maximum value of an overshoot amount of the control output that overshoots from the target value. The prediction model is derived assuming that an n-th delay (n is a natural number) occurs in a response of the control output. The reference governor is configured to calculate the target value by correcting the provisional target value of the control output based on the predicted maximum value so as to increase a degree of satisfaction of a constraint condition with regard to the control output.

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Номер записи: 45
30-01-2020 дата публикации

CONTROL SYSTEM FOR COMPRESSION IGNITION ENGINE

Номер: US20200032728A1
Автор: Higashio Masayoshi, MASUDA Yuta, Matsushima Yuto, Sunagare Yugou, Takayama Shinji, Ujihara Kenko
Принадлежит:

A control system for a compression ignition engine includes a combustion chamber, a throttle valve, an injector, an ignition plug, an EGR system, a sensor device and a controller. The controller includes a first mode module, a second mode module and a changing module configured to change an engine mode from a first mode to a second mode in response to a change demand. The changing module outputs signals to the throttle valve and the injector in response to the demand so that an air-fuel ratio of mixture gas becomes a stoichiometric air-fuel ratio or a substantially stoichiometric air-fuel ratio, and outputs a signal to the EGR system so that an EGR gas amount decreases more than before the demand, and when the EGR gas amount is determined to be decreased to a given amount, the changing module permits that the second mode module starts the second mode. 1. A control system for a compression ignition engine , comprising:a combustion chamber of the engine defined by a cylinder, a piston configured to reciprocate inside the cylinder, and a cylinder head closing one end of the cylinder;a throttle valve configured to adjust an amount of air delivered to the combustion chamber;an injector attached to the cylinder head and configured to inject fuel to be supplied into the combustion chamber;an ignition plug disposed so as to be oriented into the combustion chamber and configured to ignite mixture gas inside the combustion chamber;an EGR system configured to introduce EGR gas into the combustion chamber;a sensor device configured to measure a parameter related to operation of the engine; anda controller having a circuitry connected with the throttle valve, the injector, the ignition plug, the EGR system, and the sensor device, configured to perform a calculation in response to a measurement signal from the sensor device and output signals to the throttle valve, the injector, the ignition plug, and the EGR system,wherein the controller includes a first mode module configured ...

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Номер записи: 46
04-02-2021 дата публикации

EXHAUST GAS RECIRCULATION WIDE RANGE AIR FUEL SENSOR FOR RICH EQUIVALENCE RATIO TARGET RATIONALITY DIAGNOSTIC

Номер: US20210033016A1
Автор: Casetti Martino A., Jeffrey Scott R., Kaczmar Michael, Smith Michael A.
Принадлежит:

A method for operating an exhaust gas recirculation system using rationality diagnostics for an automobile vehicle includes: estimating an oxygen storage content (OSC) of a catalytic converter of a vehicle; comparing an amount of oxygen stored in the catalytic converter to an OSC threshold; initiating a closed oxygen storage control (COSC) event for a predetermined one of multiple cylinders of an engine of a vehicle if the OSC threshold is met or exceeded, the COSC event targeting a rich air-fuel equivalence ratio (EQR) for the predetermined one of the multiple cylinders; and directing a fuel injector communicating with the predetermined one of the multiple cylinders to operate the predetermined one of the multiple cylinders at the rich EQR. 1. A method for operating an exhaust gas recirculation system using rationality diagnostics for an automobile vehicle , comprising:enabling a vehicle deceleration fuel cut off event recovery upon receipt of a signal from an engine controller of the automobile vehicle that fueling of an engine has stopped with the automobile vehicle decelerating with the engine operating;estimating an oxygen storage content (OSC) of a catalytic converter;comparing an amount of oxygen stored in the catalytic converter to an OSC threshold saved in a memory; andinitiating a closed oxygen storage control (COSC) event if the OSC threshold is met or exceeded, the COSC event targeting a rich air-fuel equivalence ratio (EQR) for at least one of multiple cylinders of the engine.2. The method for operating an exhaust gas recirculation system using rationality diagnostics of claim 1 , further including determining if an exhaust gas recirculation (EGR) mode is authorized following initiation of the COSC event.3. The method for operating an exhaust gas recirculation system using rationality diagnostics of claim 2 , further including confirming if an engine load request has been received.4. The method for operating an exhaust gas recirculation system using ...

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Номер записи: 47
12-02-2015 дата публикации

Method of monitoring egr system

Номер: US20150040862A1
Автор: Ha Dong Bong
Принадлежит: Hyundai Motor Co

A method of monitoring an EGR system includes setting up an ignition timing map depending on EGR efficiency when the EGR system operates normally. An output value reflecting the driving state of a vehicle is divided into an active area and an inactive area. A detected value of ignition timing depending on the occurrence of knocking for the active and inactive areas is learned and stored. When knocking occurs in the active area, a corrected value of ignition timing influenced by only the operation of the EGR system is extracted using the difference between the detected values of ignition timing learned in the active and inactive areas. The amount of variation in the EGR efficiency influenced by the operation of the EGR system is measured by measuring the EGR efficiency by applying the corrected value of ignition timing to the ignition timing map.

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Номер записи: 48
09-02-2017 дата публикации

SYSTEM AND METHOD FOR DETERMINING LOCATION AND VALUE OF PEAK FIRING PRESSURE

Номер: US20170037798A1
Автор: Bhatt Dhruval, Bizub Jeffrey Jacob
Принадлежит:

A system includes a combustion engine having an intake manifold and an exhaust manifold, an exhaust gas recirculation (EGR) system coupled to the combustion engine and configured to route exhaust generated by the combustion engine from the exhaust manifold to the intake manifold, and a first knock sensor coupled to the combustion engine and configured to measure vibrations of the combustion engine and output a first vibration signal. The system also includes a controller communicatively coupled to the combustion engine, the knock sensor, the EGR system, or any combination thereof. The controller is configured to determine a peak firing pressure (PFP) within the combustion engine and control operations of both the combustion engine and the EGR system based on the PFP. 1. A system , comprising:a combustion engine comprising an intake manifold and an exhaust manifold;an exhaust gas recirculation (EGR) system coupled to the combustion engine and configured to route exhaust generated by the combustion engine from the exhaust manifold to the intake manifold;a first knock sensor coupled to the combustion engine and configured to measure vibrations of the combustion engine and output a first vibration signal; anda controller communicatively coupled to the combustion engine, the knock sensor, the EGR system, wherein the controller is configured to determine a location of peak firing pressure (PFP) or a value of absolute pressure within the combustion engine based on the first vibration signal, and control operations of both the combustion engine and the EGR system based on the PFP or the absolute pressure value.2. The system of claim 1 , comprising a second knock sensor coupled to the combustion engine configured to measure the vibrations of the combustion engine and output a second vibration signal.3. The system of claim 2 , wherein the first knock sensor is coupled proximate to a first cylinder of the combustion engine claim 2 , and the second knock sensor is coupled ...

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Номер записи: 49
08-02-2018 дата публикации

CONTROL DEVICE FOR INTERNAL-COMBUSTION ENGINE

Номер: US20180038295A1
Автор: KAMISAKA Aya, Tanaka Satoru
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

An internal-combustion engine includes an EGR device that recirculates a portion of exhaust gas, as EGR gas, from an exhaust passage to an intake passage through an EGR valve. A control device for the control device is configured to perform: EGR ratio estimation processing that calculates, by using an estimation model, an estimated EGR ratio; and estimation model update processing that updates the estimation model. The estimation model is configured to calculate the estimated EGR ratio based on a pressure parameter being a ratio of or a difference between gas pressures upstream and downstream of the EGR valve. The pressure parameter is represented by a pressure parameter model that is updatable. The estimation model update processing includes: calculating an actual EGR ratio; and updating the pressure parameter model such that the estimated EGR ratio becomes closer to the actual EGR ratio. 1. A control device for an internal-combustion engine ,the internal-combustion engine comprising an EGR device configured to recirculate a portion of exhaust gas, as EGR gas, from an exhaust passage to an intake passage through an EGR valve,the control device being configured to perform:EGR ratio estimation processing that calculates, by using an estimation model, an estimated EGR ratio being an estimate of an EGR ratio; andestimation model update processing that updates the estimation model, whereinthe estimation model is configured to calculate the estimated EGR ratio based on a pressure parameter being a ratio of or a difference between gas pressures upstream and downstream of the EGR valve,the pressure parameter is represented by a pressure parameter model that is updatable, andthe estimation model update processing includes:calculating an actual EGR ratio; andupdating the pressure parameter model such that the estimated EGR ratio becomes closer to the actual EGR ratio.2. The control device for the internal-combustion engine according to claim 1 , whereinthe pressure parameter ...

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Номер записи: 50
08-02-2018 дата публикации

ENGINE SYSTEM HAVING EXHAUST GAS RECIRCULATION APPARATUS

Номер: US20180038296A1
Автор: CHOI Choo Saeng
Принадлежит:

An engine system having an exhaust gas recirculation (EGR) apparatus includes: an engine including a plurality of combustion chambers; an intake line through which an intake gas supplied to the combustion chambers flows; an exhaust line in which an exhaust gas discharged from the combustion chambers flows; and a turbocharger including: a turbine disposed at the exhaust line and rotating by the exhaust gas; and a compressor disposed in the intake line and rotating and compressing external air. The EGR apparatus includes a recirculation line branched from the exhaust line; an EGR valve disposed at the recirculation line and adjusting a recirculation gas amount; a pressure sensor disposed at a front end of the EGR valve to measure a pressure of a recirculation gas; and a flow rate adjustment apparatus disposed at a rear end of the EGR valve and adjusting the recirculation gas amount. 1. An engine system having an exhaust gas recirculation (EGR) apparatus , the engine system comprising:an engine comprising a plurality of combustion chambers that generate a driving torque by combustion of fuel;an intake line through which an intake gas supplied to the plurality of combustion chambers flows;an exhaust line in which an exhaust gas discharged from the plurality of combustion chambers flows; anda turbocharger comprising: a turbine disposed at the exhaust line and rotating by the exhaust gas that is discharged from the plurality of combustion chambers; and a compressor, which is disposed in the intake line, rotating by interlocking with the turbine and compressing external air,wherein the EGR apparatus includes: a recirculation line branched from the exhaust line to join the intake line; an EGR valve disposed at the recirculation line and adjusting a recirculation gas amount; a pressure sensor disposed at a front end of the EGR valve of the recirculation line to measure a pressure of a recirculation gas; and a flow rate adjustment apparatus installed at a rear end of the EGR ...

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Номер записи: 51
08-02-2018 дата публикации

LEARNING AN INTAKE OXYGEN CONCENTRATION OF AN ENGINE

Номер: US20180038305A1
Автор: Allen Justin
Принадлежит:

System and method for learning an intake oxygen concentration of an engine. In one embodiment, the system includes an intake oxygen sensor and an electronic control unit. The intake oxygen sensor is configured to measure an oxygen concentration of intake air and output a signal indicative of an intake oxygen concentration value. The electronic control unit is configured to receive the signal indicative of the intake oxygen concentration value, determine whether fuel is being injected into an engine, determine whether the engine is operating in an over-run condition, control a valve to sweep an air pressure of an intake path of the engine across a plurality of air pressures, and store information indicative of intake oxygen concentration values across the plurality of air pressures to learn the intake oxygen concentration of the engine. 1. A system for learning an intake oxygen concentration of an engine , the system comprising: measure an oxygen concentration of intake air, and', 'output a signal indicative of an intake oxygen concentration value; and, 'an intake oxygen sensor configured to'} receive the signal indicative of the intake oxygen concentration value,', 'determine whether fuel is being injected into an engine,', 'determine whether the engine is operating in an over-run condition based at least in part on a determination that the fuel is not being injected into the engine,', 'responsive to determining that the engine is operating in the over-run condition, control a valve to sweep an air pressure of an intake path of the engine across a plurality of air pressures, and', 'responsive to controlling the valve to sweep the air pressure of the intake path across the plurality of air pressures, store information indicative of intake oxygen concentration values across the plurality of air pressures to learn the intake oxygen concentration of the engine., 'an electronic control unit communicatively connected to the intake oxygen sensor and configured to'}2. The ...

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Номер записи: 52
24-02-2022 дата публикации

Gas engine heat pump and method of operating the same

Номер: US20220056861A1
Автор: Heejoong JANG, Hojong Jeong
Принадлежит: LG ELECTRONICS INC

A gas engine heat pump and a method of operating the same are provided. According to an embodiment of the present disclosure, the gas engine heat pump includes: an engine for burning a mixture of air and fuel; an exhaust gas compressor for compressing exhaust gases coming from the engine; a buffer tank for storing the exhaust gases compressed by the exhaust gas compressor; an exhaust gas valve disposed between the buffer tank and an intake manifold of the engine; an exhaust gas spray nozzle for spraying the exhaust gases stored in the buffer tank into a cylinder of the engine; an exhaust gas sensor for acquiring information on the exhaust gases coming from the engine; and a controller, wherein the controller controls the operation of at least one of the exhaust gas valve and the exhaust gas spray nozzle, based on the information on the exhaust gases acquired by the exhaust gas sensor. Other various embodiments are possible.

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Номер записи: 53
07-02-2019 дата публикации

IN-CYLINDER EGR AND VVA FOR AFTERTREATMENT TEMPERATURE CONTROL

Номер: US20190040826A1
Автор: JR. James E., McCarthy, Nielsen Douglas J.
Принадлежит: Eaton Intelligent Power Limited

A computer control network is connected to a multiple-cylinder engine and implements aftertreatment temperature management. Processors are configured to determine an aftertreatment temperature-efficient air to fuel ratio that satisfies the sensed power output request, determine an air to fuel ratio adjustment, select an in-cylinder exhaust gas recirculation technique, select at least one EGR cylinder of the multiple-cylinder engine to implement the in-cylinder exhaust gas recirculation technique, and control the intake valves to open and the exhaust valves to close for the selected at least one EGR cylinder to adjust the oxygen and particulate content of the exhaust gas by applying at least a second compression stroke of the respective reciprocating piston of the at least one EGR cylinder to the exhaust gas to push the exhaust gas through to the intake manifold. 1. A system for aftertreatment temperature management in a multiple-cylinder engine , comprising:a multiple-cylinder engine comprising respective reciprocating pistons in multiple cylinders, the respective reciprocating pistons connected to a crankshaft for rotation of the crankshaft, a computer-controllable fuel injection system configured to inject fuel in to the multiple cylinders, and respective computer-controllable intake valves and exhaust valves for opening and closing the multiple cylinders; and sense a power output request for the engine and an aftertreatment temperature;', 'determine an aftertreatment temperature-efficient air to fuel ratio that satisfies the sensed power output request;', 'sense a current air to fuel ratio in one or both of an intake manifold connected to the engine and an exhaust manifold connected to the engine;', 'determine an air to fuel ratio adjustment by processing the determined aftertreatment temperature-efficient air to fuel ratio and by processing the sensed current air to fuel ratio;', 'select an in-cylinder exhaust gas recirculation technique based on the determined ...

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Номер записи: 54
18-02-2021 дата публикации

System And Method For Controlling Engine Operating Parameters During Engine Warm-up To Reduce Emissions

Номер: US20210047974A1
Автор: Claudio Cortassa, Domenico Maccarrone, Filippo LACHINA, Gianmaria MANASSERO, Marco CIBELLA, Umberto Ferrara
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A system includes a temperature sensor configured to measure a temperature of exhaust gas produced by an engine, and a boost error module configured to determine a boost error of the engine. The system further includes a combustion control module configured to select at least one of a target boost pressure of the engine, a target EGR flow rate of the engine, and a target fuel injection parameter of the engine from a first set of target values when the exhaust gas temperature is less than a predetermined temperature and the boost error is less than a predetermined value, and to select the at least one of the target boost pressure, the target EGR flow rate, and the target fuel injection parameter from a second set of target values when the exhaust gas temperature is less than the predetermined temperature and the boost error is greater than the predetermined value.

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Номер записи: 55
18-02-2016 дата публикации

Control device for internal combustion engine

Номер: US20160047350A1
Автор: Yasuhiro Kuze
Принадлежит: Toyota Motor Corp

An internal combustion engine of the present invention is an internal combustion engine equipped with a supercharger that can switch between a lean combustion operation that combusts a mixture gas with an air-fuel ratio leaner than a theoretical air-fuel ratio, and a stoichiometric combustion operation that combusts a mixture gas with an air-fuel ratio close to the theoretical air-fuel ratio. Further, the internal combustion engine has an ISC passage that connects an upstream side and a downstream side of a throttle valve in an intake passage, and an ISC valve that regulates an amount of air flowing in the ISC passage. A control device of the present invention performs valve opening control that makes an opening degree of the ISC valve an opening degree larger than a reference opening degree when request torque required by the internal combustion engine is smaller than estimated torque that can be generated in the internal combustion engine, and prohibits switching to the lean combustion operation during execution of the valve opening control.

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Номер записи: 56
16-02-2017 дата публикации

METHOD OF REDUCING ENGINE NOx EMISSIONS

Номер: US20170045004A1
Автор: Brittle Peter George, Halleron Ian, Naidu Paspuleti Ashish Kumar, Wright James
Принадлежит: FORD GLOBAL TECHNOLOGIES, LLC

A system and method for increasing engine heating rate to facilitate early introduction of exhaust gas recirculation after a cold start include operating an electric machine connect to the engine to apply a load to the engine. The electric machine may be operated as a generator to produce an increased engine torque demand and increase the rate of engine heating until an engine temperature and an exhaust temperature exceed corresponding thresholds. Operation of the electric machine as a generator may be stopped in response to a battery state of charge exceeding a threshold, or engine load exceeding a threshold. 1. A method for controlling a vehicle having an electric machine coupled to an engine having exhaust gas recirculation (EGR) , comprising:operating, by a controller, the electric machine in response to at least one of engine temperature and exhaust gas temperature being below a corresponding threshold to increase engine loading after starting the engine, andactivating the EGR in response to both the exhaust gas temperature and the engine temperature exceeding corresponding thresholds.2. The method of wherein operating the electric machine comprises operating the electric machine as a generator.3. The method of further comprising terminating operation of the electric machine as a generator in response to the engine temperature and the exhaust gas temperature exceeding the corresponding thresholds.4. The method of further comprising stopping the operating of the electric machine as a generator in response to a state of charge of a battery connected to the electric machine exceeding a corresponding threshold.5. The method of wherein the electric machine comprises an integrated starter-generator drivingly connected to the engine.6. The method of wherein the engine comprises a compressor claim 1 , the exhaust gas recirculation comprises a low pressure exhaust gas recirculation that returns exhaust gas to a position upstream from the compressor claim 1 , and the ...

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Номер записи: 57
15-02-2018 дата публикации

METHOD OF REMOVING IMPURITIES FROM EGR BY AIR BLOWING, EGR SYSTEM, AND VEHICLE INCLUDING THE SAME

Номер: US20180045144A1
Автор: Kim Dong-Sun, NAM Young-Sun, Won Min-Kyu
Принадлежит: HYUNDAI MOTOR COMPANY

A method of removing impurities from EGR by air blowing may include performing an air-blowing mode in which, when a current intake system pressure detected by a controller exceeds a target intake system pressure in an intake system, in which a mixture is supplied to an engine, a portion of the mixture, serving as compressed air, flows into an EGR path, through which a portion of exhaust, serving as EGR gas and flowing in the intake system and an exhaust system connected to the intake system, is supplied to the engine. 1. A method of removing impurities from exhaust gas recirculation (EGR) by air blowing , comprising:performing an air-blowing mode in which, when a current intake system pressure detected by a controller exceeds a target intake system pressure in an intake system, in which a mixture is supplied to an engine, a portion of the mixture, serving as compressed air, flows into an EGR path, through which a portion of exhaust, serving as EGR gas and flowing in the intake system and an exhaust system connected to the intake system, is supplied to the engine.2. The method of claim 1 , wherein the air-blowing mode is performed to compare a detected current intake system pressure with the target intake system pressure claim 1 , to check an EGR valve opening condition of an EGR valve mounted at the EGR path when the current intake system pressure exceeds the target intake system pressure claim 1 , to open the EGR valve and a dump valve mounted at a dump valve path connecting the intake system to the EGR path such that the compressed air flows into the EGR path claim 1 , when the EGR valve opening condition is satisfied claim 1 , and to close the EGR valve and open the dump valve mounted at the dump valve path connecting the intake system to the EGR path such that the compressed air flows into the EGR path claim 1 , when the EGR valve opening condition is not satisfied.3. The method of claim 2 , wherein the target intake system pressure is set in consideration of an ...

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Номер записи: 58
03-03-2022 дата публикации

RECHARGING MANAGEMENT FOR SKIPPING CYLINDERS

Номер: US20220065182A1
Автор: Brahma Avra, Cai Xiaoping, Cao Yongyan, Chen Kevin Shikui, Evans Andrea Marie, Serrano Louis Joe, Srinivasan Vijay
Принадлежит:

A variety of methods and arrangements are described for managing recharging of cylinders of an internal combustion engine during skip fire operation of the engine. In one method, a maximum allowed deactivation time for a cylinder is determined and the cylinder is recharged before the maximum allowed deactivation time is exceeded.

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Номер записи: 59
26-02-2015 дата публикации

Learning of egr valve lift and egr valve flow transfer function

Номер: US20150053186A1
Автор: Daniel Joseph Styles, Gopichandra Surnilla, Imtiaz Ali, James Alfred Hilditch
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Methods and systems are provided for improving accuracy of delta pressure over valve (DPOV) based EGR flow measurement during low valve lift conditions by learning errors in EGR valve lift and/or EGR valve flow transfer function.

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Номер записи: 60
14-02-2019 дата публикации

METHOD OF EXHAUST GAS MANAGEMENT IN INTERNAL COMBUSTION ENGINES, CORRESPONDING SYSTEM, ENGINE, VEHICLE AND COMPUTER PROGRAM PRODUCT

Номер: US20190048810A1
Автор: TAGLIALATELA SCAFATI Ferdinando
Принадлежит:

A method of controlling exhaust gas recirculation in the internal combustion engine includes: sensing one or more sensing signals indicative of operating conditions of an internal combustion engine, producing, as a function of the sensing signal or signals sensed, an exhaust gas recirculation control signal for controlling exhaust gas recirculation in the internal combustion engine, producing, e.g., via a “virtual” sensor including a neural network, a particulate size distribution signal indicative of the particulate size distribution in the exhaust of the internal combustion engine, correcting the exhaust gas recirculation control signal as a function of the particulate size distribution control signal, thereby producing a corrected exhaust gas recirculation control signal, and controlling exhaust gas recirculation in the internal combustion engine as a function of the corrected exhaust gas recirculation control signal. 1. A method , including:sensing a sensing signal indicative of an operating condition of an internal combustion engine,producing, as a function of the sensing signal sensed, an exhaust gas recirculation control signal for controlling recirculation of exhaust gas of the internal combustion engine,producing a particulate size distribution signal indicative of a particulate size distribution in the exhaust gas of the internal combustion engine,correcting the exhaust gas recirculation control signal as a function of the particulate size distribution signal, thereby producing a corrected exhaust gas recirculation control signal, andcontrolling exhaust gas recirculation in the internal combustion engine as a function of the corrected exhaust gas recirculation control signal.2. The method of claim 1 , wherein:sensing the sensing signal includes sensing a signal selected out of a speed signal, a load signal and combinations thereof.3. The method of claim 1 , wherein:producing the exhaust gas recirculation control signal includes applying engine control maps ...

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Номер записи: 61
13-02-2020 дата публикации

POWER SYSTEM OPTIMIZATION

Номер: US20200049089A1
Автор: Charbonnel Sylvain, GUO Fang, KRISHNAMURTHYGOPALAN Anand, WILLIAMS Gavin
Принадлежит: CATERPILLAR INC.

Power system optimization is disclosed. An example power system described herein may include an engine control module that receives measurements associated with sensors, identifies settings associated with control devices, determines that a first set of parameters associated with the one or more control devices is to be optimized according to a first optimization process, iteratively performs the first optimization process until the first set of parameters are optimized, determines that a second set of parameters associated with the one or more control devices are to be optimized according to a second optimization process, iteratively performs the second optimization process until the second set of parameters are optimized, and, after the second set of parameters are optimized according to the second optimization process, configures one of the control devices to operate using an optimized value for the control device determined using the second optimization process. 1. A device comprising:a memory; and identify a plurality of adjustable parameters to control a power system;', 'identify a plurality of non-adjustable parameters associated with the power system;', 'determine that a first set of adjustable parameters, of the plurality of adjustable parameters, is to be optimized according to a first optimization process;', 'wherein the first optimization process is performed based on values of the plurality of non-adjustable parameters;', 'iteratively perform the first optimization process until the first set of adjustable parameters is optimized according to the first optimization process,'}, 'after the first set of adjustable parameters is optimized according to the first optimization process, select a second set of adjustable parameters, of the plurality of adjustable parameters, to be optimized according to a second optimization process;', 'iteratively perform the second optimization process until the second set of adjustable parameters are optimized according to ...

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Номер записи: 62
22-02-2018 дата публикации

METHODS AND SYSTEM FOR ADJUSTING CAMSHAFTS

Номер: US20180051598A1
Автор: Fried Marcus William, Pedro David
Принадлежит:

Systems and methods for correcting an engine intake camshaft position and an engine exhaust camshaft position for a variable valve timing engine are described. In one example, intake manifold pressure of an engine is sampled while a motor/generator rotates the engine at a predetermined speed without fuel being supplied to the engine. A camshaft angle where minimum intake manifold pressure is observed is a basis for correcting camshaft position. 1. An engine operating method , comprising:adjusting a first camshaft position of a first engine via a controller in response to an error between a predetermined camshaft position of a second engine and a second camshaft position of the first engine; andmoving a camshaft of the first engine to the adjusted first camshaft position via the controller.2. The method of claim 1 , where the first camshaft position is adjusted via adding an offset to a camshaft position output of a table or a function stored in memory of the controller claim 1 , and further comprising adjusting the first camshaft of the first engine before adjusting a second camshaft of the first engine based on a second predetermined camshaft position of the second engine claim 1 , where the first camshaft is an exhaust camshaft and the second camshaft is an intake camshaft.3. The method of claim 1 , where the first camshaft position is adjusted via adding an offset to one or more values in a table or a function stored in memory of the controller.4. The method of claim 1 , where the predetermined camshaft position of the second engine is stored in memory of the controller.5. The method of claim 4 , where the predetermined camshaft position of the second engine is determined based on an intake manifold pressure of the second engine.6. The method of claim 1 , where the second camshaft position of the first engine is determined based on an intake manifold pressure of the first engine.7. The method of claim 1 , further comprising determining the second camshaft ...

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Номер записи: 63
22-02-2018 дата публикации

Method and Apparatus for Controlling a Two-Stage Air Charging System with Mixed EGR

Номер: US20180051639A1
Автор: Giuseppe Conte, Ibrahim Haskara, Yue-Yun Wang
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A two-stage air charging system for an internal combustion engine with mixed exhaust gas recirculation includes a high pressure exhaust gas recirculation loop, a low pressure exhaust gas recirculation loop, an air throttle system, a turbo air charging system, and an electric air charging system. A method to control the system includes monitoring desired operating target commands and operating parameters. Feedback control signals are determined based upon the monitored desired operating target commands and the monitored operating parameters. The two-stage air charging system is controlled based on system control commands for each of the high pressure exhaust gas recirculation loop, the low pressure exhaust gas recirculation loop, the air throttle system, the turbo air charging system and the electric air charging system.

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Номер записи: 64
23-02-2017 дата публикации

INTERNAL COMBUSTION ENGINE AND METHOD FOR CONTROLLING INTERNAL COMBUSTION ENGINE

Номер: US20170051660A1
Автор: Arai Masahiro, KUBOTA Mitsuhiko, SUZUKI Kenji
Принадлежит:

An internal combustion engine includes an internal combustion engine main body, an intake passage, an exhaust passage, a supercharger, an intake circulation passage, an exhaust circulation passage, an intake circulation valve, an exhaust circulation valve and a controller. The supercharger is provided on the intake passage and the exhaust passage. The supercharger supplies compressed intake air to the internal combustion engine main body. The intake circulation passage connects the sections of the intake passage that are upstream and downstream of the supercharger. The exhaust circulation passage connects sections of the exhaust passage that are upstream and downstream of the supercharger. The intake circulation valve is provided in the intake circulation passage. The exhaust circulation valve is provided in the exhaust circulation passage. The controller is programmed to close the exhaust circulation valve in accordance with an opening degree of the intake circulation valve. 1. An internal combustion engine comprising:an internal combustion engine main body;an intake passage that circulates intake air that is introduced into the internal combustion engine main body;an exhaust passage that circulates exhaust that is discharged by the internal combustion engine main body;a supercharger provided in the intake passage and the exhaust passage, which compresses and supplies intake air to the internal combustion engine main body;an intake circulation passage that connects upstream and downstream side portions of the supercharger in the intake passage;an exhaust circulation passage that connects the exhaust passage and the upstream side portion of the supercharger in the intake passage;an intake circulation valve provided in the intake circulation passage;an exhaust circulation valve provided in the exhaust circulation passage; andat least one controller programmed to close the exhaust circulation valve upon determining the intake circulation valve is opened, and open the ...

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Номер записи: 65
23-02-2017 дата публикации

METHOD AND SYSTEM FOR CALIBRATING EXHAUST VALVES

Номер: US20170051698A1
Автор: Henry Luke Michael, Malone Matthew John, VARDHANA Harsha, Zielinski David
Принадлежит:

Various methods and systems are provided for calibrating one or more exhaust valves. In one example, a system comprises an exhaust valve configured to control flow of exhaust gas exiting an engine and a controller configured to calibrate the exhaust valve by commanding the exhaust valve to a fully closed position with a first driving current and measuring a first position of the exhaust valve at the first driving current, commanding the exhaust valve to a fully open position with a second driving current and measuring a second position of the exhaust valve at the second driving current, and generating a map based on a linear function determined from the first driving current, the second driving current, the measured first position, and the measured second position. The controller is further configured to adjust a position of the exhaust valve based on the map. 1. A system , comprising:an exhaust valve configured to control flow of exhaust gas exiting an engine; anda controller configured to calibrate the exhaust valve by:commanding the exhaust valve to a fully closed position with a first driving current and measuring a first position of the exhaust valve at the first driving current,commanding the exhaust valve to a fully open position with a second driving current and measuring a second position of the exhaust valve at the second driving current, andgenerating a map based on a linear function determined from the first driving current, the second driving current, the measured first position, and the measured second position,the controller further configured to adjust a position of the exhaust valve based on the map.2. The system of claim 1 , wherein the controller is configured to calibrate the exhaust valve responsive to one or more of an engine start event or a threshold amount of time elapsing since a previous engine start event or calibration event.3. The system of claim 1 , wherein the exhaust valve is a first exhaust valve controlling flow of exhaust gas to ...

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Номер записи: 66
21-02-2019 дата публикации

SYSTEMS AND METHODS FOR A SPLIT EXHAUST ENGINE SYSTEM

Номер: US20190055891A1
Автор: Boyer Brad Alan, Leiby James, Madison Daniel Paul, Ulrey Joseph Norman
Принадлежит:

Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation to an intake passage via a first exhaust manifold and exhaust gas to an exhaust passage via a second exhaust manifold. In one example, a flow of exhaust (e.g., exhaust gas recirculation) from engine cylinders to the intake passage, upstream of a compressor, via an exhaust gas recirculation (EGR) passage and the first exhaust manifold may be adjusted by adjusting a timing of a first set of cylinder exhaust valves coupled to the first exhaust manifold. Additionally, the first set of cylinder exhaust valves open at a different time than a second set of cylinder exhaust valves coupled to the exhaust passage. 1. A method for an engine , comprising:adjusting a timing of a first set of cylinder exhaust valves to adjust a flow of combusted exhaust gases from engine cylinders to an intake passage, upstream of a compressor, via an exhaust gas recirculation (EGR) passage, in response to a change in a desired EGR flow amount, where the first set of cylinder exhaust valves open at a different time than a second set of cylinder exhaust valves coupled to an exhaust passage; andadjusting the timing of the first set of cylinder exhaust valves to adjust a flow of fresh, blowthrough air from engine cylinders to the intake passage via the EGR passage in response to a change in a desired blowthrough flow amount.2. The method of claim 1 , wherein adjusting the timing of the first set of cylinder exhaust valves includes advancing a timing of exhaust valve opening of the first set of cylinder exhaust valves in response to a request to increase the flow of exhaust gases from the engine cylinders to the intake passage via the EGR passage due to an increase in the desired EGR flow amount.3. The method of claim 2 , further comprising advancing a timing of intake valves of the engine cylinders to increase an amount of valve overlap between the intake valves ...

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Номер записи: 67
03-03-2016 дата публикации

CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

Номер: US20160061126A1
Автор: KUZE Yasuhiro
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

An internal combustion engine of the present invention is an internal combustion engine including a supercharger and an EGR device. Further, the internal combustion engine has an ISC passage that connects an upstream side and a downstream side of a throttle valve in an intake passage, and an ISC valve that regulates an amount of air that flows in the ISC passage. A control device of the present invention performs valve opening control that makes an opening degree of the ISC valve an opening degree larger than a reference opening degree when request torque required by the internal combustion engine is smaller than estimated torque that can be generated in the internal combustion engine, and prohibits opening of an EGR valve of the EGR device during execution of the valve opening control. 1. A control device for an internal combustion engine including a supercharger , comprising:an EGR device that recirculates part of an exhaust gas to an intake passage from an exhaust passage of the internal combustion engine, as an EGR gas;a throttle valve that is installed in the intake passage;an ISC passage that connects an upstream side and a downstream side of the throttle valve, in the intake passage;an ISC valve that regulates an amount of air that flows in the ISC passage by being controlled to a predetermined opening degree;control means for executing valve opening control that makes an opening degree of the ISC valve an opening degree larger than a reference opening degree, when request torque required by the internal combustion engine is smaller than a predicted generation torque calculated in accordance with control target values which are set at present; andmeans for prohibiting opening of an EGR valve of the EGR device, during execution of the valve opening control.2. The control device for an internal combustion engine according to claim 1 , further comprising:means for closing the EGR valve before execution of the valve opening control when there is an execution ...

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Номер записи: 68
03-03-2016 дата публикации

Method and Apparatus for Exhaust Gas Aftertreatment Device Warming

Номер: US20160061128A1
Автор: Cunliffe Daniel, Ladlow Peter, Nicholson Matthew, Rutledge Sarah
Принадлежит: Perkins Engines Company Limited

To help meet exhaust gas emissions standards, an internal combustion engine may have an exhaust gas aftertreatment device located in its exhaust gas stream. However, the exhaust gas aftertreatment device may only operate effectively above a minimum threshold temperature. In the present disclosure there is provided a method and apparatus for warming the exhaust gas aftertreatment device and a method and apparatus for controlling when exhaust gas aftertreatment device warming should be initiated and stopped. 1. A method for controlling the operation of an exhaust gas aftertreatment device warm-up strategy for increasing a temperature of an exhaust gas aftertreatment device located in an exhaust gas stream of an internal combustion engine , the method comprising the steps of:initiating the warm-up strategy when the internal combustion engine is operating, a temperature of the internal combustion engine exceeds an engine temperature threshold and an exhaust gas aftertreatment device temperature is less than a first exhaust gas aftertreatment device temperature threshold; andstopping the warm-up strategy when the exhaust gas aftertreatment device temperature exceeds a second exhaust gas aftertreatment device temperature threshold.2. The method of claim 1 , further comprising a step of stopping the warm-up strategy when a quantity of the fuel burned by the internal combustion engine since the warm-up strategy was initiated exceeds a fuel quantity threshold.3. The method of claim 1 , further comprising a step of stopping the warm-up strategy when a measured soot content in a diesel particulate filter located in the exhaust gas stream of the internal combustion engine exceeds a soot threshold.4. The method of claim 1 , wherein the exhaust gas aftertreatment device warm-up strategy comprises at least one of:retarding a timing of fuel injection into a cylinder of the internal combustion engine;increasing a dwell time between a pilot fuel injection and a main fuel injection ...

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Номер записи: 69
03-03-2016 дата публикации

CONTROL METHOD OF INTERNAL COMBUSTION ENGINE

Номер: US20160061140A1
Автор: Hotta Shintaro
Принадлежит:

A control method takes an internal combustion engine including a port injection valve that injects fuel into an intake port and a cylinder injection valve that directly injects fuel into a combustion chamber as a control target. In the control method, when request torque to the internal combustion engine is in a first torque range, lean combustion is realized by port asynchronous injection. When the request torque is increased from the first torque range to a second torque range which is higher than the first torque range, fuel injection is switched to port synchronous injection from port asynchronous injection, and lean combustion is realized by the port synchronous injection. When the request torque is increased from the second torque range to a third torque range that is higher than the second torque range, the port synchronous injection is stopped, and lean combustion is realize by cylinder injection. 1. A control method of an internal combustion engine that causes an internal combustion engine including a port injection valve that injects fuel into an intake port and a cylinder injection valve that directly injects fuel into a combustion chamber to selectively execute port asynchronous injection that starts fuel injection by the port injection valve while an intake valve is closed and ends the fuel injection by the port injection valve before the intake valve opens , port synchronous injection that starts fuel injection by the port injection valve while the intake valve is closed and ends the fuel injection by the port injection valve while the intake valve opens , and cylinder injection that performs fuel injection by the cylinder injection valve ,wherein when request torque to the internal combustion engine is in a first torque range, lean combustion in which fuel is leaner than stoichiometric combustion is realized by the port asynchronous injection,when the request torque increases from the first torque range to a second torque range that is higher than the ...

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Номер записи: 70
03-03-2016 дата публикации

SENSOR FOR A COMPONENT OF A MOTOR VEHICLE

Номер: US20160061152A1
Автор: Hodebourg Grégory, MARTIN Nicolas
Принадлежит: VALEO SYSTEMES DE CONTROLE MOTEUR

A sensor for a component of a motor vehicle, said sensor being capable of measuring a physical property of a component with a first sensitivity when the physical property is in a range of high sensitivity, with a second sensitivity when the physical property is in a range of low sensitivity, the first sensitivity being greater than the second sensitivity. 1. A sensor for a component of a motor vehicle , said sensor being capable of measuring a physical property of a component:with a first sensitivity when the physical property is in a range of high sensitivity,with a second sensitivity when the physical property is in a range of low sensitivity, the first sensitivity being greater than the second sensitivity.2. The sensor according to claim 1 , wherein the sensor is arranged to generate two ranges of high sensitivity and one range of low sensitivity.3. The sensor according to claim 2 , wherein the ranges of high sensitivity are to either side of the range of low sensitivity.4. The sensor according to claim 1 , wherein the value of the high sensitivity is at least two times claim 1 , and in particular at least four times higher than that of the low sensitivity.5. The sensor according to claim 1 , wherein the sensor is arranged to deliver a signal of the analog type.6. The sensor according to claim 1 , wherein the sensor is arranged to produce signals of the digital type.7. The sensor according to claim 1 , wherein the physical property measured by the sensor is a position of an actuating device.8. The sensor according to claim 1 , wherein the physical property measured by the sensor is an angular position.9. A fluid control unit for a valve having at least three ports for a motor vehicle claim 1 , the fluid control unit comprising:a mobile metering means arranged for the selective opening or closing of a first of the three ports;a mobile diverting means arranged for the selective closing of a second or a third of the three ports; andan actuating device for the two ...

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Номер записи: 71
01-03-2018 дата публикации

SYSTEMS AND METHOD FOR AN ENGINE BYPASS VALVE

Номер: US20180058310A1
Автор: Kumar Alok, Lavertu Thomas Michael, Mischler James Robert, SCOTT Richard James, VAUGHN Jared Davis
Принадлежит:

Various systems and methods are provided for controlling operation of a turbocharger compressor. In one example, a system includes a turbocharger including a turbine positioned in an exhaust passage and a compressor positioned in an intake passage, an engine bypass passage having an inlet fluidically coupled to an outlet of the compressor and an outlet fluidically coupled to an inlet of the turbine, an engine bypass valve to control flow through the engine bypass passage, and a controller configured to adjust a position of the engine bypass valve to maintain compressor operation within a designated compressor efficiency region. 1. A system , comprising:a turbocharger including a turbine positioned in an exhaust passage and a compressor positioned in an intake passage;an engine bypass passage having an inlet fluidically coupled to an outlet of the compressor and an outlet fluidically coupled to an inlet of the turbine;an engine bypass valve to control flow through the engine bypass passage; anda controller configured to adjust a position of the engine bypass valve to maintain compressor operation within a designated compressor efficiency region.2. The system of claim 1 , further comprising:an engine having a first group of cylinders and a second set of cylinders; andan exhaust gas recirculation (EGR) system including an EGR passage coupling the first group of cylinders to the intake passage, an EGR metering valve to control flow of exhaust gas through the EGR passage, and an EGR bypass valve to control flow of exhaust gas from the first group of cylinders to the exhaust passage.3. The system of claim 2 , wherein the controller is configured to adjust a position of the EGR metering valve based on a target intake oxygen fraction and adjust a position of the EGR bypass valve to maintain a pressure of exhaust gas in the EGR passage above a pressure of intake air downstream of the compressor.4. The system of claim 2 , wherein the inlet of the turbine is a single inlet ...

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Номер записи: 72
01-03-2018 дата публикации

ENGINE SYSTEM HAVING EGR APPARATUS

Номер: US20180058351A1
Автор: CHOI Choo Saeng
Принадлежит: HYUNDAI MOTOR COMPANY

An engine system having an ERG apparatus may include an engine including a plurality of combustion chambers generating a driving torque by combustion of a fuel; an intake line inflowing an intake gas supplied to the combustion chamber; an exhaust line flowing an exhaust gas exhausted from the combustion chamber; a turbocharger including a turbine provided at the exhaust line and rotated by the exhaust gas exhausted from the combustion chamber and a compressor provided at the intake line, rotated in connection with the turbine, and compressing external air; and an EGR apparatus including a recirculation line branched from the exhaust line and joined to the intake line, a flow rate controller mounted at the recirculation line and measuring and controlling an amount of recirculation gas, and a pressure sensor mounted at the recirculation line to measure a pressure of the recirculation gas. 1. An engine system having an exhaust gas recirculation (EGR) apparatus , comprising:an engine including a plurality of combustion chambers generating a driving torque by combustion of a fuel;an intake line inflowing an intake gas supplied to the combustion chambers;an exhaust line flowing an exhaust gas exhausted from the combustion chambers;a turbocharger including a turbine provided at the exhaust line and rotated by the exhaust gas exhausted from the combustion chambers and a compressor provided at the intake line, rotated in connection with the turbine, and compressing external air; andthe EGR apparatus including a recirculation line branched from the exhaust line and joined to the intake line, a flow rate controller mounted at the recirculation line and measuring and controlling an amount of recirculation gas, and a pressure sensor mounted at the recirculation line to measure a pressure of the recirculation gas.2. The engine system of claim 1 , whereinthe flow rate controller includes:a drive motor generating power;a flap mounted at a rotation axis of the drive motor and ...

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Номер записи: 73
01-03-2018 дата публикации

Method and systems for adjusting flow resistance in a thermal management system during an engine start

Номер: US20180058354A1
Автор: Alexandra Rose Hesse, Ryan Keith Linker
Принадлежит: General Electric Co

Various methods and systems are provided for a thermal management system of an engine. A method for an engine may comprise adjusting an engine speed during an engine start event that includes an engine cranking activity from a first engine speed to a second engine speed, where the adjusting is based on a sensed oil temperature; adjusting a first resistance of a radiator primary return line of a thermal management system to a first resistance level; and adjusting the engine speed a duration after a start of the engine cranking from the second engine speed to a third engine speed, the third engine speed based at least in part on an engine torque demand, and selectively adjusting the first resistance between each of the first resistance level and a second resistance level based on the third engine speed, the second resistance level being lower than the first resistance level.

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Номер записи: 74
01-03-2018 дата публикации

SYSTEM AND METHOD FOR OPERATING AN ENGINE

Номер: US20180058391A1
Автор: Gibson Alexander O`Connor, Jentz Robert Roy, Rollinger John Eric, Short Christopher M.
Принадлежит:

Methods and systems for operating an engine including an external exhaust gas recirculation (EGR) system are presented. In one non-limiting example, output of a differential pressure sensor and output of an intake manifold pressure sensor are used as a basis for determining whether or not EGR system degradation is present while an engine is operating at conditions other than engine idle conditions. 1. A method for operating an engine , comprising:receiving a differential pressure sensor output and intake manifold pressure sensor output to a controller;judging whether or not exhaust gas recirculation system degradation is present responsive to the differential pressure sensor output and the intake manifold pressure sensor output while operating an engine with intake manifold pressure greater than atmospheric pressure via the controller; andadjusting an actuator via the controller responsive to the judgment.2. The method of claim 1 , where the actuator is a waste gate.3. The method of claim 1 , further comprising converting the differential pressure sensor output to a differential pressure claim 1 , and where the judgement is based on the differential pressure exceeding a second threshold.4. The method of claim 3 , further comprising converting the intake manifold pressure sensor output to an intake manifold pressure claim 3 , and where the judgement is also based on the intake manifold pressure minus a barometric pressure exceeding a first threshold.5. The method of claim 1 , further comprising converting the differential pressure sensor output to a differential pressure claim 1 , and where the judgement is based on an absolute value of the differential pressure exceeding an eighth threshold.6. The method of claim 5 , further comprising converting the intake manifold pressure sensor output to an intake manifold pressure claim 5 , and where the judgement is also based on the intake manifold pressure minus a barometric pressure exceeding a seventh threshold.7. The ...

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Номер записи: 75
02-03-2017 дата публикации

METHOD AND DEVICE FOR CONTROLLING A MOTOR-VEHICLE INTERNAL COMBUSTION ENGINE FITTED WITH A FUEL INJECTION SYSTEM AND AN EXHAUST GAS RECIRCULATION SYSTEM

Номер: US20170058801A1
Автор: De Smet Frederik, Roettger Daniel, Vigild Christian Winge
Принадлежит:

Embodiments are provided herein for controlling a motor-vehicle internal combustion engine fitted with a fuel injection system and an exhaust gas recirculation system. In one example, in a deceleration phase a closed exhaust gas recirculation circuit is formed, a mass (m) of an air quantity enclosed therein is determined, a first oxygen content (O, O) of the air quantity is detected, a test injection is carried out with an injection valve, a second oxygen content (O, O) of the air quantity is detected, and the fuel mass (m) injected in the test injection is determined from the mass (m) of the air quantity and the first and the second oxygen content (O, O, O, O). The disclosure also relates to a corresponding device for controlling a motor-vehicle internal combustion engine fitted with a fuel injection system and an exhaust gas recirculation system. 1. A method for controlling a motor-vehicle internal combustion engine fitted with a fuel injection system and an exhaust gas recirculation system , comprising:in a deceleration phase, forming a closed exhaust gas recirculation circuit;{'sub': 'circ', 'determining a mass (m) of an air quantity enclosed in the closed exhaust gas recirculation circuit;'}detecting a first oxygen content of the air quantity;carrying out a test injection with an injection valve;detecting a second oxygen content of the air quantity; and{'sub': fuel', 'circ, 'determining a fuel mass (m) injected in the test injection from the mass (m) of the air quantity and the first and the second oxygen contents.'}2. The method as claimed in claim 1 , wherein forming the closed exhaust gas recirculation circuit comprises activating an exhaust valve claim 1 , an intake throttle valve claim 1 , and an exhaust gas recirculation valve claim 1 , or activating the exhaust valve and a three-way valve in an intake tract.3. The method as claimed in claim 1 , wherein the mass (m) of the air quantity is determined by at least one pressure sensor and at least one ...

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Номер записи: 76
02-03-2017 дата публикации

ENGINE APPARATUS

Номер: US20170058820A1
Автор: SUGIMOTO Hitoki
Принадлежит:

In an in-cylinder injection mode, a misfire count M is incremented by value 1 when a time variation ΔT] with regard to a cylinder [i] is not less than a reference value ΔTref in each ignition cycle. When a number of operations N becomes equal to or greater than a reference value Nref, the misfire count M is compared with a reference value Mref. When the misfire count M is equal to or greater than the reference value Mref, it is determined that an in-cylinder injector has a failure. When the misfire count M is less than the reference value Mref, on the other hand, a likelihood that the in-cylinder injection mode is likely to be continued is increased at a large value (L/N), compared with the likelihood at a small value (L/N). 1. An engine apparatus , comprising:a multi-cylinder engine that includes an in-cylinder injection valve provided to inject a fuel in a cylinder, and a port injection valve provided to inject the fuel into an intake port; anda controller that is configured to control the engine, whereinin an in-cylinder injection mode where the fuel is injected from only the in-cylinder injection valve or in a port injection mode where the fuel is injected from only the port injection valve, the controller performs a failure diagnosis process for the in-cylinder injection valve or the port injection valve, wherein the failure diagnosis process increases a misfire count of the engine when a variation in rotation of the engine is equal to or greater than a predetermined variation in every predetermined cycle, and determines that the in-cylinder injection valve or the port injection valve has a failure when the misfire count is equal to or greater than a predetermined number of times after elapse of a predetermined time period that is longer than the predetermined cycle, andthe controller increases a likelihood that the in-cylinder injection mode or the port injection mode is likely to be continued when the engine has a long light load operation time in the failure ...

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Номер записи: 77
02-03-2017 дата публикации

CORRECTION OF AN INJECTED QUANTITY OF FUEL

Номер: US20170058821A1
Автор: De Smet Frederik, Roettger Daniel, Vigild Christian Winge
Принадлежит:

A method for adjusting an actual value of a quantity of fuel injected into an internal combustion engine of a motor vehicle to a target value is provided, wherein a deviation of the actual quantity of fuel injected from the target value is determined based on a ratio of the component of the combusted quantity of gas in the induction system to the concentration of oxides of nitrogen in the exhaust system and the injected quantity of fuel is readjusted according to the deviation. Furthermore, an arrangement for carrying out the method is provided. 1. A method for controlling an internal combustion engine of a motor vehicle having an induction system , an exhaust system , and an exhaust gas recirculation system , wherein via the exhaust gas recirculation system , a part of an exhaust gas mass flow that is produced by the internal combustion engine is branched off from the exhaust system , is recirculated into an induction plenum chamber of the induction system , and is introduced from there into the internal combustion engine , the method comprising:{'sub': man', 'x', 'man, 'providing a target ratio between a component of a combusted mass of gas in the induction system (f) and a concentration of oxides of nitrogen molecules (CNO) in the exhaust system under a condition that said f-CNOx ratio correlates with a predetermined known quantity of fuel injected into the internal combustion engine;'}{'sub': 'man', 'calculating a target value of a CNOx working point using a factual value;'}{'sub': 'x', 'providing an actual value of CNO;'}{'sub': 'x', 'performing a comparison between the provided actual value and the target value of CNO, and'}{'sub': 'x', 'correcting an existing deviation of the actual value of CNOby adjusting to the corresponding target value by increasing or reducing the quantity of fuel injected.'}2. The method as claimed in claim 1 , wherein calculating the target value of the CNOx working point comprises calculating the target value of the CNOx working ...

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Номер записи: 78
04-03-2021 дата публикации

METHODS AND SYSTEMS FOR A VEHICLE

Номер: US20210062738A1
Автор: Breuer Albert, Lorenz Thomas, Ruhland Helmut
Принадлежит:

Methods and systems are provided for a hydrogen combustion engine. In one example, a method may include operating the hydrogen combustion engine at one of two combustion air ratios, wherein a combustion air ratio between the two is avoided via adjusting one or more operating parameters. 1. A method for operating a hydrogen combustion engine configured to burn a hydrogen-containing fuel in a combustion chamber of the hydrogen combustion engine , the method comprising:{'sub': 'A', 'operating the hydrogen combustion engine with a first combustion air ratio with a λ≤1 during conditions of higher torque demand;'}{'sub': 'B', 'operating the hydrogen combustion engine with a second combustion air ratio with a λ≥2 during conditions of lower torque demand; and'}switching from the second combustion air ratio to the first combustion air ratio in response to a torque demand increasing, wherein switching comprises advancing an intake valve opening to increase EGR flow to the combustion chamber as a fuel injection amount is increased.2. The method of claim 1 , wherein the hydrogen combustion engine is operated with only the first combustion air ratio or with the second combustion air ratio.3. The method of claim 1 , wherein the torque demand is based on an accelerator pedal position claim 1 , and wherein the torque demand increasing comprises the accelerator pedal position being depressed.4. The method of claim 1 , wherein advancing the intake valve opening comprises overlapping the intake valve opening with an exhaust valve opening.5. The method of claim 1 , wherein advancing the intake valve opening includes adjusting the intake valve opening to a boot lift profile claim 1 , wherein the boot lift profile comprises opening the intake valve at a crank angle of 270°.6. The method of claim 1 , wherein advancing the intake valve opening includes adjusting the intake valve opening to a multi-lift profile claim 1 , wherein the multi-lift profile comprises opening the intake valve at a ...

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Номер записи: 79
12-03-2015 дата публикации

CONTROL DEVICE FOR EXHAUST GAS RECIRCULATION VALVE

Номер: US20150068504A1
Автор: HATANO MAKOTO
Принадлежит:

An EGR valve includes a valve housing having a gas passage and a motor housing containing a motor. The valve housing and the motor housing are made of different materials. The valve housing is provided with a valve seat, a valve element, and a valve shaft. The motor includes a stator having a coil and a rotor having an output shaft. The output shaft is rotated together with the rotor, thereby making stroke movement of the valve shaft in an axial direction to change an opening degree of the valve element with respect to the valve seat. An ECU for controlling the EGR valve determines a target opening degree of the EGR valve, uses the coil as a temperature sensor to detect the temperature of the motor, compensates a target opening degree based on the detected temperature, and controls the motor based on the compensated target opening degree. 1. A control device for an exhaust gas recirculation valve ,wherein the exhaust gas recirculation valve includes a valve housing having a gas passage and a motor housing containing a motor, the valve housing and the motor housing being made of different kinds of materials,the valve housing is provided with a valve seat, a valve element placed to be movable into or out of contact with the valve seat, and a valve shaft for moving the valve element with respect to the valve seat,the motor includes: a stator having a coil; and a rotor having an output shaft,the motor being configured to rotate the rotor together with the output shaft to make stroke movement of the valve shaft in an axial direction to change an opening degree of the valve element with respect to the valve seat,the control device includes a control unit to control the exhaust gas recirculation valve, andthe control unit is configured to determine a target opening degree of the exhaust gas recirculation valve, use the coil as a temperature sensor for detecting a temperature of the motor, compensate the target opening degree based on the detected temperature, and control ...

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Номер записи: 80
28-02-2019 дата публикации

SYSTEMS AND METHODS FOR CONTROLLING AIR-FUEL RATIO IN DEDICATED EGR ENGINE

Номер: US20190063349A1
Автор: Geckler Samuel C., Perfetto Anthony Kyle
Принадлежит:

Systems, apparatus, and methods are disclosed that include a divided exhaust engine with at least one primary exhaust gas recirculation (EGR) cylinder and a plurality of non-primary EGR cylinders. The systems, apparatus and methods control the fueling to the at least one primary EGR cylinder in response to EGR fraction reduction conditions. 1. A system comprising:an internal combustion engine having at least one primary exhaust gas recirculation (EGR) cylinder connected to provide an EGR flow to an EGR passage and a plurality of non-primary cylinders connected to provide an exhaust flow to an exhaust passage, wherein the EGR passage is connected to an intake system to provide an EGR flow from the at least one primary EGR cylinder to the intake system, wherein the intake system provides a charge flow to the at least one primary EGR cylinder and the plurality of non-primary cylinders, the charge flow including an intake air flow and an EGR fraction provided by an amount of recirculated exhaust gas from at least the at least one primary EGR cylinder; anda controller configured to interpret an EGR fraction reduction condition in which the EGR fraction provided by the amount of recirculated exhaust gas in the charge flow is reduced from an expected EGR fraction during steady state conditions, and in response to the EGR fraction reduction condition the controller is configured to reduce an air-fuel ratio in the at least one primary EGR cylinder.2. The system of claim 1 , further comprising a fuel system connected by at least one injector to each of the at least one primary EGR cylinder and the plurality of non-primary EGR cylinders claim 1 , wherein the controller is configured to increase the fueling amount from the at least one injector connected to the at least one primary EGR cylinder by an amount that reduces the air-fuel ratio relative to a steady state air-fuel ratio.3. The system of claim 1 , wherein the at least one primary EGR cylinder includes at least two ...

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Номер записи: 81
28-02-2019 дата публикации

Method, System and Mobile User Appliance for Adapting an Energy Utilization Process of a Vehicle

Номер: US20190063354A1
Автор: AUGST Alexander
Принадлежит:

Method, apparatus and mobile user appliance for adapting an energy utilization process of a vehicle. At least one value of an energy utilization characteristic quantity is ascertained that represents a first energy utilization process in a first vehicle, and a value of a parameter is ascertained that represents at least one constraint of the energy utilization in the first vehicle during the energy utilization process. A mathematical relationship between at least one of the provided values of an energy utilization characteristic quantity, the values of the parameters of the first vehicle and parameters for a possible second energy utilization process of a second vehicle is ascertained. Further, a data record is provided on the basis of the ascertained mathematical relationship, and a profile data record is provided that comprises the data record. Depending on the profile data record of the first vehicle and second parameter, a fuel composition and/or a split of energy types for a drive system of a second vehicle and/or control data for an energy distribution process in a second vehicle is/are ascertained for the second energy utilization process. 1. A method for adapting an energy utilization process of at least one vehicle , the method comprising the steps of:{'b': '1', 'ascertaining at least one value of an energy utilization characteristic quantity (K_) that represents a first energy utilization process in a first vehicle,'}{'b': '1', 'ascertaining at least one value of a parameter (P_) that represents at least one constraint of the energy utilization in the first vehicle during the first energy utilization process,'}{'b': 1', '1', '2, 'determining a mathematical relationship between at least one or more of the provided values of the at least one energy utilization characteristic quantity (K_), the applicable values of the parameters (P_) of the first vehicle and one or more parameters (P_) for a possible second energy utilization process of a second vehicle,'} ...

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Номер записи: 82
29-05-2014 дата публикации

Method and apparatus for determining abnormality in exhaust gas recirculation amount

Номер: US20140144219A1
Автор: Hironori Narita, Hitoshi Nakano, Munechika Tsutsumi
Принадлежит: HINO MOTORS LTD

An absolute value of a deviation of an actual EGR ratio, calculated in a current operational status of an engine 1, from a target EGR ratio set on the basis of current operational status of the engine 1 is acquired and is multiplied by a quotient, as gain, acquired from division of a feedback correction amount of opening degree of an EGR valve 12 by an upper limit of the feedback correction amount to determine normality when an acquired product is close to “0” and determine higher degree of abnormality the further the product is away from “0”.

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Номер записи: 83
10-03-2016 дата публикации

Internal combustion engine egr flow rate estimation apparatus and internal combustion engine control apparatus

Номер: US20160069285A1
Автор: Hideki Hagari, Takuo Watanuki, Tomokazu Makino
Принадлежит: Mitsubishi Electric Corp

Based on an internal EGR ratio and desired external and internal EGR ratios, an EGR valve opening degree is feedback-controlled based on a desired EGR ratio, calculated in such a way as to perform correction so that a total EGR ratio becomes constant, and an EGR effective opening area obtained through learning of the relationship between an EGR valve opening degree and an effective opening area; thus, a correct characteristic of EGR valve opening degree vs. effective opening area can be maintained and hence it is made possible to absorb variations, changes with time, and even environmental conditions, while making an EGR valve and an intake/exhaust VVT collaborate with each other; therefore, an EGR flow rate can accurately be estimated.

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Номер записи: 84
10-03-2016 дата публикации

METHOD AND SYSTEMS FOR EGR CONTROL

Номер: US20160069286A1
Автор: Henry Luke Michael, Zielinski David
Принадлежит:

Various methods and systems are provided for controlling exhaust gas recirculation in an engine. One embodiment for a system comprises an engine having first and second cylinder groups, and an exhaust gas recirculation (EGR) passage coupled between the first cylinder group and an intake manifold of the engine, flow of EGR through the EGR passage controlled by one or more EGR exhaust valves, and a controller configured to maintain a target intake gas concentration by adjusting the one or more EGR exhaust valves and adjusting fuel injection amounts to the first cylinder group differently than the second cylinder group. 1. A system comprising:an engine having first and second cylinder groups, and an exhaust gas recirculation (EGR) passage coupled between the first cylinder group and an intake manifold of the engine, flow of EGR through the EGR passage controlled by one or more exhaust valves; anda controller configured to maintain a target intake gas concentration by adjusting the one or more exhaust valves and adjusting fuel amounts to the first cylinder group differently than the second cylinder group.2. The system of claim 1 , wherein the controller is configured to adjust the one or more exhaust valves and fuel amounts to the first cylinder group differently than the second cylinder group responsive to a transient engine operation.3. The system of claim 2 , wherein the transient engine operation comprises a change in a throttle position.4. The system of claim 2 , wherein the target intake gas concentration is a target intake oxygen concentration claim 2 , and wherein the transient engine operation comprises an intake oxygen concentration being below a reference intake oxygen concentration by at least a predetermined amount.5. The system of claim 4 , wherein when the intake oxygen concentration is not below the reference intake oxygen concentration by at least the predetermined amount claim 4 , the controller is configured to:maintain the target intake oxygen ...

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Номер записи: 85
27-02-2020 дата публикации

DEEP REINFORCEMENT LEARNING FOR AIR HANDLING CONTROL

Номер: US20200063676A1
Автор: Kothandaraman Govindarajan, Narang Vikas, Neema Kartavya, Tamaskar Shashank
Принадлежит:

An engine system includes an air handling control unit which controls a plurality of air handling actuators responsible for maintaining flow of air and exhaust gas within the engine system. The engine system has a plurality of sensors whose sensor signals at least partially define a current state of the engine system. The air handling control unit includes a controller which controls the air handling actuators of the engine system as well as a processing unit coupled to the sensors and the controller. The processing unit includes an agent which learns a policy function that is trained to process the current state, determines a control signal to send to the controller by using the policy function after receiving the current state as an input, and outputs the control signal to the controller. Then, the agent receives a next state and a reward value from the processing unit and updates the policy function using a policy evaluation algorithm and a policy improvement algorithm based on the received reward value. Subsequently, the controller controls the air handling actuators in response to receiving the control signal. In one aspect of the embodiment, the control signal is a command signal for the air handling actuators. 1. An air handling control for an engine system , comprising:a plurality of sensors coupled to the engine system, wherein sensor signals from the plurality of sensors at least partially define current states;a plurality of air handling actuators;a controller operable to control the air handling actuators; anda processing unit coupled to the sensors and the controller, the processing unit comprising an agent operative to interact with the engine system to:learn a policy function trained to process the current state, determine a control signal to send to the controller by using the policy function after receiving the current state as an input, output the control signal to the controller, receive a next state and a reward value from the processing unit, ...

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Номер записи: 86
27-02-2020 дата публикации

VALVE OPENING CONTROL APPARATUS AND METHOD OF GASOLINE EGR SYSTEM

Номер: US20200063677A1
Автор: KIM Han Sang
Принадлежит:

The present disclosure relates to a valve opening control apparatus and method of a gasoline EGR system. The valve opening control apparatus includes a gasoline engine generating driving power through combustion, an intake line through which an intake gas flows into a combustion chamber of the gasoline engine, an exhaust line through which an exhaust gas is discharged from the combustion chamber, a recirculation line branched off from the exhaust line and connected to the intake line, an EGR cooler, positioned in the recirculation line, cooling the exhaust gas flowing in the intake line, an EGR valve configured to control an amount of the exhaust gas flowing in the intake line, an emergency (EM) filter positioned in one end of the EGR valve, and a flow rate regulator configured to control an opening amount of the EGR valve according to a clogging state of the EM filter. 1. A valve opening control apparatus of a gasoline exhaust gas recirculation (EGR) system , the apparatus comprising:a gasoline engine generating driving power through combustion;an intake line through which an intake gas flows into a combustion chamber of the gasoline engine;an exhaust line through which an exhaust gas is discharged from the combustion chamber;a recirculation line branched off from the exhaust line and connected to the intake line;an EGR cooler, positioned in the recirculation line, cooling the exhaust gas flowing in the intake line;an EGR valve configured to control an amount of the exhaust gas flowing in the intake line;an emergency (EM) filter positioned in one end of the EGR valve; anda flow rate regulator configured to control an opening amount of the EGR valve according to a clogging state of the EM filter.2. The apparatus of claim 1 , wherein the flow rate regulator measures the clogging state of the EM filter claim 1 ,in response to a determination that a clogging degree of the EM filter is less than a first reference value, the flow rate regulator is configured to maintain ...

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Номер записи: 87
11-03-2021 дата публикации

GASOLINE ENGINE EXHAUST PURIFICATION METHOD AND EXHAUST PURIFICATION DEVICE

Номер: US20210071603A1
Автор: TSUYUKI Takeshi
Принадлежит: NISSAN MOTOR CO., LTD.

Exhaust particulates are collected by a GPF(gasoline particulate filter) device. EGR control is executed, and exhaust gas flowing through an exhaust passage upstream of the GPF device is introduced into an intake passage via an EGR passage. In the EGR control, an opening area of the EGR passage is controlled to reduce the opening area of the EGR passage according to an operating state of the engine as a particulate deposition amount in the GPF device is increased. 110-. (canceled)11. An exhaust purification method for a gasoline engine , the method comprising:collecting exhaust particulates by a GPF device;executing EGR control of introducing exhaust gas flowing through an exhaust passage upstream of the GPF device into an intake passage via an EGR passage; andcontrolling an opening area of the EGR passage in the EGR control to reduce the opening area of the EGR passage according to an operating state of the engine as a particulate deposition amount in the GPF device is increased, and an actual EGR rate or an EGR amount is brought close to a target value according to the operating state of the engine.12. The exhaust purification method for the gasoline engine according to claim 11 , whereinan EGR valve is provided in the EGR passage, andthe method further comprises, in the EGR control, correcting an opening degree of the EGR valve according to the operating state of the engine to a smaller value as the particulate deposition amount is increased so as to reduce the opening area of the EGR passage.13. The exhaust purification method for the gasoline engine according to claim 12 , further comprising claim 12 ,in the EGR control, varying a correction amount of the opening degree of the EGR valve with respect to the particulate deposition amount in accordance with an exhaust flow rate in the exhaust passage.14. The exhaust purification method for the gasoline engine according to claim 12 , whereinan admission valve is provided in the intake passage so that a differential ...

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Номер записи: 88
19-03-2015 дата публикации

Methods and systems for an intake oxygen sensor

Номер: US20150075502A1
Автор: Daniel A. Makled, Daniel Joseph Styles, Gopichandra Surnilla, James Alfred Hilditch, Michael Howard Shelby, Richard E. Soltis
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Methods and systems are provided for adjusting a reference voltage for an intake manifold oxygen sensor based on ingestion of hydrocarbons from a fuel system canister and/or an engine crankcase. During conditions when purge or crankcase ventilation hydrocarbons are ingested in the intake aircharge, the intake oxygen sensor is transitioned from operating at a lower reference voltage to a higher reference voltage where the effects of the ingested hydrocarbons on the sensor output are nullified. An EGR dilution of the intake aircharge is estimated based on the output of the sensor at the higher reference voltage while an amount of hydrocarbons ingested is estimated based on a difference between sensor outputs at the higher and lower reference voltages.

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Номер записи: 89
17-03-2016 дата публикации

Combustion Engine, In Particular Gas Engine, For a Vehicle, In Particular For a Commercial Vehicle

Номер: US20160076467A1
Автор: Barciela Bruno, Prümm Franz Werner, Weiss Joachim
Принадлежит:

A combustion engine, in particular a gas engine, for a vehicle, in particular for a commercial vehicle, has an intake duct through which a gas, in particular a fuel gas/air/exhaust gas mixture, can be fed to a combustion unit), in particular a cylinder-piston unit, of the combustion engine, and an exhaust gas recirculation system feeding in an exhaust gas from the combustion unit at an exhaust gas admission region to the gas fed to the combustion unit. At least one measuring device that determines the gas mass flow, in particular fuel gas/air/exhaust gas mass flow, and the gas temperature, in particular fuel gas/air/exhaust gas temperature, is arranged in the intake duct upstream of the combustion unit and downstream of the exhaust gas admission region. At least one temperature sensor is arranged both in the exhaust gas recirculation system and in the intake duct, in each case upstream of the exhaust gas admission region, in addition to the measuring device, in order to determine a recirculated exhaust gas mass flow and/or an air mass flow fed to the combustion unit. 1. A combustion engine for a vehicle , comprising:a combustion unit;an intake duct feeding a fuel gas/air/exhaust gas mixture to the combustion unit;an exhaust gas recirculation system feeding an exhaust gas from the combustion unit at an exhaust gas admission region to the gas fed to the combustion unit;at least one measuring device arranged in the intake duct upstream of the combustion unit and downstream of the exhaust gas admission region, the at least one measuring device determining a gas mass flow of the fuel gas/air/exhaust gas mixture and a gas temperature of the fuel gas/air/exhaust gas mixture; anda first temperature sensor arranged in the exhaust gas recirculation system and a second temperature sensor arranged in the intake duct, each of the first temperature sensor and the second temperature sensor being arranged upstream of the exhaust gas admission region to determine at least one of a ...

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Номер записи: 90
17-03-2016 дата публикации

DISCRETE TIME RATE-BASED MODEL PREDICTIVE CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE AIR PATH CONTROL

Номер: US20160076473A1
Автор: Huang Mike, Kolmanovsky Ilya
Принадлежит:

A discrete time rate-based model predictive controller for air path control for a diesel engine regulates VGT position and EGR valve position to specified set points by coordinated control of intake manifold air pressure and EGR rate. The controller may be configured to measure or estimate at least one of the intake manifold pressure and EGR rate. A non-linear discrete time rate-based predictive model may be used, as developed by the controller. 1. A system for optimizing engine operation , the system comprising:an internal combustion engine; anda controller configured to control a variable geometry turbine (VGT) and an exhaust gas recirculation (EGR) valve during engine operation, the controller developing a discrete time rate-based predictive model responsive to engine operating parameters, and using the discrete time rate-based predictive model to generate a VGT position and an EGR valve position.2. The system of claim 1 , wherein the engine operating parameters comprise engine intake manifold pressure and EGR rate.3. The system of claim 2 , wherein the controller is configured to measure or estimate at least one of the intake manifold pressure and the EGR rate.4. The system of claim 1 , wherein the controller is further configured to develop a non-linear discrete time rate-based predictive model using engine operating parameters claim 1 , and uses the non-linear discrete time rate-based predictive model to generate the VGT position and EGR valve position.5. The system of claim 1 , wherein the internal combustion engine is a diesel engine.6. A method for controlling an internal combustion engine claim 1 , the method comprising:obtaining intake manifold pressure and EGR rate measurements or estimates;developing, using a controller, a discrete time rate-based predictive model responsive to the intake manifold pressure and EGR rate measurements; andusing the discrete time rate-based predictive model to generate, by the controller, a VGT position and an EGR valve ...

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Номер записи: 91
15-03-2018 дата публикации

Engine system and control method using the same

Номер: US20180073453A1
Автор: Choo Saeng CHOI
Принадлежит: Hyundai Motor Co

An engine system includes: an intake line through which fresh air flows; an exhaust line through which exhaust gas flows; an exhaust gas recirculation (EGR) system which recirculates some of exhaust gas to a combustion chamber; a turbocharger having: a turbine that rotates by the exhaust gas; and a compressor rotating by the rotation of the turbine; an intercooler disposed in the intake line at a rear end of the compressor; an intake bypass line penetrating the intercooler from the intake line, adjusting the amount of intake gas to be supplied into the combustion chamber, and merging into the intake line at a front end of the compressor; a recirculation valve disposed in the intake bypass line; and a controller controlling opening and closing of the recirculation valve so that some of the intake gas is supplied into the intake line through the intake bypass line.

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Номер записи: 92
24-03-2022 дата публикации

EGR DEVICE

Номер: US20220090550A1
Автор: HANAZAWA Masafumi, HIJIKATA Kenji, KUGO Daisuke, MATSUDA Noriyuki, SHIONO Tomomichi, Yamamoto Kenichi
Принадлежит: SUBARU CORPORATION

An EGR device for a vehicle includes a valve driver, a pressure comparison unit, a freeze determination unit, and an EGR controller. The valve driver drives an EGR valve to open, when fuel cut has been continued for a predetermined time in a state where an engine speed of a vehicle's engine is equal to or higher than a predetermined rotational speed. The pressure comparison unit compares a pre-driving pressure of an engine's intake pipe with a post-driving pressure of the intake pipe. The freeze determination unit sets a flag indicating that the EGR valve is frozen when a difference between the pre-driving pressure and the post-driving pressure is less than a predetermined value and an external temperature is less than a threshold. When the flag has been set, the EGR controller sets a control state of the EGR valve to a closed state and stops EGR control. 1. An EGR device to be applied to a vehicle , the EGR device comprising:a valve driver configured to drive an EGR valve to open, when fuel cut has been continued for a predetermined time in a state where an engine speed of an engine of the vehicle is equal to or higher than a predetermined rotational speed;a pressure comparison unit configured to compare a pre-driving pressure of an intake pipe of the engine before the EGR valve is driven with a post-driving pressure of the intake pipe after the EGR valve has been driven;a freeze determination unit configured to set a determination flag indicating that the EGR valve is frozen when a difference between the pre-driving pressure and the post-driving pressure is less than a predetermined value and an external temperature is less than a threshold; andan EGR controller configured to, when the determination flag has been set, set a control state of the EGR valve to a closed state and stop EGR control.2. The EGR device according to claim 1 , further comprising:a flag controller, whereinthe EGR controller is configured to turn off the determination flag when the difference ...

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Номер записи: 93
16-03-2017 дата публикации

CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE SUPPRESSING WHITE SMOKE EMISSIONS

Номер: US20170074181A1
Автор: Goto Isamu
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A control apparatus for an internal combustion engine is provided. The control apparatus includes a temperature sensor and an electronic control unit. The temperature sensor is configured to detect the temperature of an exhaust gas control apparatus. The electronic control unit is configured to: estimate a sulfuric compound accumulation amount on the exhaust gas control apparatus; and when a specific condition in which the sulfuric compound accumulation amount is equal to or larger than a predetermined accumulation amount and the temperature of the exhaust gas control apparatus is equal to or higher than a predetermined temperature or more is satisfied, control an intake air amount adjuster such that an intake air amount when the specific condition is satisfied is increased as compared to the intake air amount when the specific condition is not satisfied in the same operation state. 1. A control apparatus for an internal combustion engine , the internal combustion engine including an exhaust gas control apparatus provided in an exhaust system of the internal combustion engine , and the internal combustion engine including an intake air amount adjuster configured to adjust an intake air amount of the internal combustion engine , the control apparatus comprising:a temperature sensor configured to detect the temperature of the exhaust gas control apparatus; andan electronic control unit configured to:(a) estimate a sulfuric compound accumulation amount, the sulfuric compound accumulation amount being an amount of a sulfuric compound accumulated on the exhaust gas control apparatus; and(b) when a specific condition in which the sulfuric compound accumulation amount is equal to or larger than a predetermined accumulation amount and the temperature of the exhaust gas control apparatus is equal to or higher than a predetermined temperature is satisfied in an operation state, control the intake air amount adjuster such that the intake air amount adjuster increases the ...

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Номер записи: 94
16-03-2017 дата публикации

Combustion Pre-Chamber and Method for Operating Same

Номер: US20170074184A1
Автор: Kim Charlie
Принадлежит: CATERPILLAR INC.

An internal combustion engine includes a pre-chamber assembly including a wall having an internal surface opposite an external surface, the internal surface of the wall defining a combustion pre-chamber and at least one orifice extending to an aperture through the external surface of the wall; a block having an internal surface defining a bore therein; a piston disposed within the bore and configured for reciprocal translation within the bore, the piston, the bore, and the external surface of the wall at least partly defining a main combustion chamber, and the combustion pre-chamber being in fluid communication with the main combustion chamber via the at least one orifice; an energy source operatively coupled to the combustion pre-chamber; and an exhaust gas recirculation (EGR) valve fluidly coupled to the combustion pre-chamber and an exhaust conduit of the internal combustion engine. 1. An internal combustion engine , comprising:a pre-chamber assembly including a wall having an internal surface opposite an external surface, the internal surface of the wall defining a combustion pre-chamber and at least one orifice extending to an aperture through the external surface of the wall;a block having an internal surface defining a bore therein;a piston disposed within the bore and configured for reciprocal translation within the bore,the piston, the bore, and the external surface of the wall at least partly defining a main combustion chamber, and the combustion pre-chamber being in fluid communication with the main combustion chamber via the at least one orifice;an energy source operatively coupled to the combustion pre-chamber;an exhaust gas recirculation (EGR) valve fluidly coupled to the combustion pre-chamber and an exhaust conduit of the internal combustion engine; anda controller operatively coupled to the energy source and the EGR valve, the controller being configured toadmit a flow of exhaust gas into the combustion pre-chamber along a flow path that does not ...

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Номер записи: 95
16-03-2017 дата публикации

METHODS AND SYSTEMS FOR DIAGNOSING AN INTAKE OXYGEN SENSOR BASED ON PRESSURE

Номер: US20170074215A1
Автор: Clark Timothy Joseph, Kim Yong-Wha, Surnilla Gopichandra, Uhrich Michael James
Принадлежит:

Methods and systems are provided for diagnosing an intake oxygen sensor. In one example, a method may include indicating degradation of an intake oxygen sensor based on a first time constant of an output of the intake oxygen sensor and a second time constant of an output of a throttle inlet pressure sensor. The method may further include adjusting EGR flow based on the output of the intake oxygen sensor and the output of the throttle inlet pressure sensor when the intake oxygen sensor is not degraded. 1. A method comprising:adjusting exhaust gas recirculation (EGR) flow based on a first output of an intake oxygen sensor in response to a difference between a first time constant of the first output and a second time constant of a second output of a throttle inlet pressure sensor being less than a threshold; andadjusting the EGR flow based on an alternate sensor output in response to the difference being greater than the threshold.2. The method of claim 1 , wherein adjusting the EGR flow based on the alternate sensor output includes not adjusting the EGR flow based on the first output of the intake oxygen sensor in response to the difference being greater than the threshold.3. The method of claim 1 , wherein adjusting the EGR flow based on the alternate sensor output includes adjusting the EGR flow based on a third output of a differential pressure over valve (DPOV) sensor positioned around an EGR valve disposed in an EGR passage coupled between an exhaust passage claim 1 , downstream of a turbine claim 1 , and an intake passage claim 1 , upstream of a compressor claim 1 , where the DPOV sensor detects a pressure difference between an upstream region of the EGR valve and a downstream region of the EGR valve.4. The method of claim 1 , wherein adjusting EGR flow includes adjusting an amount of EGR flow delivered to an intake passage claim 1 , upstream of a compressor claim 1 , via adjusting a position of an EGR valve disposed in an EGR passage coupled between an exhaust ...

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Номер записи: 96
05-03-2020 дата публикации

METHOD AND SYSTEMS FOR AIRFLOW CONTROL

Номер: US20200072143A1
Автор: Henry Luke Michael, Mischler James Robert
Принадлежит:

Various methods and systems are provided for controlling emissions. In one example, a controller is configured to respond to one or more of intake manifold air temperature (MAT), intake air flow rate, or a sensed or estimated intake oxygen fraction by changing an exhaust gas recirculation (EGR) amount to maintain particulate matter (PM) and NOx within a range, and then further adjusting the EGR amount based on NOx sensor feedback. 113-. (canceled)14. A method , comprising:performing a first adjustment of injection timing and intake oxygen concentration targets based on respective maps of engine operation;performing a second adjustment of injection timing and intake oxygen concentration targets based on intake manifold temperature;performing a third adjustment of the intake oxygen concentration target based on NOx sensor feedback; andperforming a fourth adjustment of an exhaust gas recirculation (EGR) amount based on oxygen sensor feedback.15. The method of claim 14 , wherein performing the third adjustment of the intake oxygen concentration target based on NOx sensor feedback comprises applying a lower gain and a larger filter to the third adjustment than to the second adjustment of the intake oxygen concentration target.16. The method of claim 14 , wherein performing the fourth adjustment comprises performing a fourth adjustment of the EGR amount based on oxygen sensor feedback and humidity.17. The method of claim 14 , further comprising selectively performing the third adjustment based on engine operational state.18. The method of claim 14 , further comprising claim 14 , after performing the third adjustment claim 14 , converting the intake oxygen concentration to an EGR flow reference and performing the fourth adjustment on the EGR flow reference.19. The method of claim 14 , wherein performing the first adjustment comprises selecting a first map for adjusting the injection timing target and selecting a second map for adjusting the intake oxygen concentration ...

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Номер записи: 97
05-03-2020 дата публикации

HIGH EFFICIENCY TURBOCHARGER WITH EGR SYSTEM

Номер: US20200072144A1
Автор: Burkett Michael J., Harris Michael, Lotz Robert, McHENRY JOSEPH POWELL, Troxler Paul, WALLACE ROBERT MALCOLM
Принадлежит:

In accordance with one aspect of the present disclosure, a turbocharger includes a compressor having a compressor wheel, a turbine provided within a housing, and an exhaust gas recirculation (EGR) flow path. The EGR flow path includes a first fluid connection in the housing and located in proximity to the turbine, a second fluid connection located in proximity to a trailing edge of the compressor wheel, an EGR control valve disposed between the first fluid connection and the second fluid connection, the EGR control valve configured to selectively operate the turbocharger in a low-heat mode having an EGR up to 50% and an operational mode having an EGR rate typically less than 35%. 1. A turbocharger comprising:a compressor having a compressor wheel;a turbine provided within a housing; and a first fluid connection in the housing and located in proximity to the turbine;', 'a second fluid connection located in proximity to a trailing edge of the compressor wheel; and', 'an EGR control valve disposed between the first fluid connection and the second fluid connection, the EGR control valve configured to control an EGR rate., 'an exhaust gas recirculation flow path having2. The turbocharger of claim 1 , the EGR control valve further comprising:a valve position indicator configured to output a valve position of the EGR control valve; andan EGR pressure sensor configured to determine and output an exhaust gas pressure; wherein the turbocharger is configured to determine a turbocharger speed based at least in part on the valve position and the exhaust gas pressure.3. The turbocharger of claim 1 , wherein the second fluid connection is configured to direct an EGR flow toward a direction of a fresh air flow from the compressor wheel.4. The turbocharger of claim 1 , wherein the EGR control valve comprises a scoop valve claim 1 , the scoop valve having:a first surface with a predominantly flat surface configured to align with a housing wall when in a sealed position; anda second ...

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Номер записи: 98
05-03-2020 дата публикации

Control device for internal combustion engine and control method for internal combustion engine

Номер: US20200072151A1
Автор: Jinwu GAO, Kota Sata, Shigeyuki Urano, Tielong SHEN
Принадлежит: Toyota Motor Corp

A control device for an internal combustion engine includes at least one processor and a memory configured to store a program. The at least one processor is configured to execute, by executing the program, a process of deciding a manipulated variable of the internal combustion engine from a control input value, in accordance with a predetermined conversion rule, a process of calculating a sample value of the controlled variable, a process of calculating a reference expectation value of the controlled variable from the control input value, a process of performing a hypothesis test for a null hypothesis that an average value of a predetermined number of recent sample values of sample values of the controlled variable is equal to the reference expectation value, and a process of modifying the conversion rule by an adaptive control when the null hypothesis is rejected.

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Номер записи: 99
26-03-2015 дата публикации

SYSTEM FOR DETECTING A LEAKAGE IN AN INTAKE LINE OF AN INTERNAL COMBUSTION ENGINE

Номер: US20150082771A1
Автор: "DellUnto Francesco", Musumeci Salvatore, Odello Fabio
Принадлежит:

A system for detecting a leakage/failure in in an intake line of an internal combustion engine comprising an intake line (IL) and an exhaust line (EL), means (HFM) for measuring or for estimating a quantity of fresh air ({dot over (m)}) entering said intake line (IL), means for measuring or for estimating a quantity of fuel ({dot over (m)}) injected in the engine (E), measurement or estimation means (λ and/or NOx), on the exhaust line, adapted to provide a first value (λ) of an air/fuel ratio introduced in the internal combustion engine (E), the system comprising processing means (ECU) adapted to calculate a second value (λ) of said air/fuel ratio, calculated on the basis of the measured and estimated quantities of fresh air ({dot over (m)}) and fuel ({dot over (m)}) to calculate an error (λ) between the first and the second value (λ−λ) and to detect a condition of leakage/failure if said error is outside a predefined interval [λ−, λ+] containing the value zero. 1. A system for detecting a leakage/failure in an intake line of an internal combustion engine comprisingan intake line (IL) and an exhaust line (EL),{'sub': 'HFM', 'means (HFM) for measuring or for estimating a quantity of fresh air ({dot over (m)}) entering said intake line (IL),'}{'sub': 'FUEL', 'means for measuring or for estimating a quantity of fuel ({dot over (m)}) injected into the engine (HFM),'}{'sub': measured', 'exp', 'HFM', 'FUEL', 'err', 'measured', 'exp', 'err', 'err, 'measurement or estimation means (λ and/or NOx), on said exhaust line, adapted to provide a first value (λ) of an air/fuel ratio introduced in the internal combustion engine (E), the system comprising processing means (ECU) configured to calculate a second value (λ) of said air/fuel ratio, calculated on the basis of said measured or estimated quantities of fresh air ({dot over (m)}) and fuel ({dot over (m)}) injected into the engine (E), to calculate an error (λ) as the difference between said first and second value of air/fuel ...

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Номер записи: 100