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Небесная энциклопедия

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

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Мониторинг СМИ

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

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 9963. Отображено 100.
05-01-2012 дата публикации

Hydraulic Drive Apparatus for Construction Equipment

Номер: US20120003069A1
Принадлежит: Individual

A hydraulic drive system for a working machine provides improved safety during forced regeneration. Upon input of a forced regeneration command signal from a forced regeneration switch, a controller detects non-operated states of all hydraulic actuators such as an arm cylinder arranged on a hydraulic excavator based on a lock detection signal from a gate lock detection switch, and also an attitude of a front working mechanism. The attitude is proper from the standpoint of safety. The detection is based on an arm angle signal from an arm angle sensor, a bucket angle signal from a bucket angle sensor and a boom pressure signal from a boom pressure sensor. Taking the detection of the non-operated states and proper attitude as conditions, the controller outputs control signals to a boosting proportional solenoid valve and flow-rate controlling, proportional solenoid valve to make a forced regenerator conduct forced regeneration.

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10-06-2015 дата публикации

Система двигателя

Номер: RU0000152593U1

1. Система двигателя, содержащая:устройство сжатия, содержащее компрессор, расположенный во впускном канале;первый дроссель, расположенный ниже по потоку от компрессора во впускном канале;второй дроссель, расположенный выше по потоку от компрессора во впускном канале;контроллер, содержащий процессор и машиночитаемое запоминающее устройство, содержащее команды, исполняемые процессором, дляоткрывания второго дросселя для повышения давления на впуске первого дросселя при переходном состоянии, когда требуемое давление во впускном коллекторе больше, чем давление на впуске дросселя у первого дросселя, если падение давления на втором дросселе больше, чем пороговое значение давления.2. Система двигателя по п. 1, дополнительно содержащая:систему регулируемой установки фаз клапанного распределения;при этом машиночитаемое запоминающее устройство дополнительно содержит команды, исполняемые процессором для:регулировки системы регулируемой установки фаз клапанного распределения для уменьшения внутреннего захватывания EGR в цилиндрах двигателя при переходном состоянии, когда требуемое абсолютное давление во впускном коллекторе больше, чем давление на впуске дросселя, если коэффициент наполнения цилиндров меньше, чем пороговое значение коэффициента наполнения.3. Система двигателя по п. 1, дополнительно содержащая:систему LP-EGR для подачи LP-EGR из выпускного канала во впускной канал выше по потоку от компрессора;при этом машиночитаемое запоминающее устройство дополнительно содержит команды, исполняемые процессором для:уменьшения потока LP-EGR при переходном состоянии, когда требуемое абсолютное давление во впуск� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 152 593 U1 (51) МПК F02D 23/00 (2006.01) F02D 43/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ (21)(22) Заявка: ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2014120400/06, 20.05.2014 (24) Дата начала отсчета срока действия патента: 20.05.2014 Приоритет(ы): (30) Конвенционный приоритет: (45) Опубликовано: ...

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12-01-2012 дата публикации

Method and control device for determining a characteristic viscosity variable of an oil

Номер: US20120006289A1
Принадлежит: Schaeffler Technologies AG and Co KG

In order for the viscosity of the engine oil to be determined as directly as possible, particularly in the case of a motor vehicle with hydraulic control of the gas exchange valves, provision is made for a time period which a hydraulic component, in particular a solenoid valve, requires to move from a first position to a second position to be used as a measure of the viscosity. In particular, an electrical control signal for the solenoid valve is evaluated in the process. An additional sensor arrangement is not required. The determined viscosity is preferably actively used for controlling the gas exchange valves.

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19-01-2012 дата публикации

Catalyst overheat prevention apparatus

Номер: US20120014410A1
Принадлежит: Toyota Motor Corp

A catalyst overheat prevention apparatus has a temperature obtaining portion that estimates a convergence temperature of a catalyst provided in the exhaust system of an internal combustion engine and the present temperature of the catalyst. The catalyst overheat prevention apparatus also has a fuel increment calculation portion, a comparison portion, a correction portion, and a fuel increment setting portion, which are used to execute OT fuel increase control when the convergence temperature and present catalyst temperature obtained by the temperature obtaining portion are equal to or higher than an OT determination temperature. The catalyst overheat prevention apparatus also has a present temperature correction portion that corrects the present catalyst temperature to be equal to the OT determination temperature when the present catalyst temperature is equal to or higher than the OT determination temperature and the convergence temperature is equal to the OT determination temperature.

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09-02-2012 дата публикации

Method for managing transitions in internal combustion engines with a hybrid drive powertrain

Номер: US20120035793A1
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A method for controlling combustion mode transitions for an engine of a hybrid powertrain includes commanding an increase in engine torque, adjusting motor torque output from a torque machine responsive to the operator torque request and the commanded increase in engine torque, executing the combustion mode transition, and operating the torque machine in a torque reclamation state.

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01-03-2012 дата публикации

Exhaust gas cleaning system for engineering vehicle

Номер: US20120047883A1
Принадлежит: HITACHI CONSTRUCTION MACHINERY CO LTD

An exhaust gas cleaning system is provided in an engineering vehicle such as a hydraulic excavator. During automatic regeneration, when a gate lock lever 5 is in a locked state and work is not performed, the exhaust gas temperature detected by the exhaust temperature detecting device 37 may be lower than the threshold value, so temperature-rising assistance is started as follows. The minimum engine output PS 1 (pump discharge pressure P 1 and pump discharge amount Q 1 ) is brought to engine output PS 2 (pump discharge pressure P 2 and pump discharge amount Q 2 ). In this way, a hydraulic load is applied to an engine to thereby increase exhaust gas temperature. When the work is resumed during the regeneration, an operator pulls down the gate lock lever to the first position A, and the engine output is returned to PS 1. Thus, the temperature-rising assistance is stopped, however the automatic regeneration is continued.

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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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10-05-2012 дата публикации

Deterioration determination apparatus for airflow meter and deterioration determination method

Номер: US20120111100A1
Принадлежит: Denso Corp

When a deterioration determination apparatus determines a degree of deterioration in characteristics of an airflow meter, a driving condition of an engine is maintained at a specified condition in which intake air flow rate is greater than a specified value. A measurement error of the airflow meter is computed based on an intake air flow rate measured with the airflow meter. The degree of deterioration due to stain is determined based on the measurement error.

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21-06-2012 дата публикации

Method for real-time modeling of an n-dimensional surface

Номер: US20120158374A1
Принадлежит: Delphi Technologies Inc

A method for determining an estimate of a response characteristic that depends on a number of input factors includes developing a mathematical model of the response as a function of the input factors based on a statistical fit of a plurality of measured data points. The method also includes mapping the value of the response characteristic and the input factors at a plurality of conditions. The method combines the mapped data with the mathematical model to produce an estimate of the response characteristic that is more accurate over a range of conditions than either the mapped data or the model taken individually.

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05-07-2012 дата публикации

Engine Emissions Control System Green Engine Development

Номер: US20120167849A1
Принадлежит: Individual

High Temperature application Linear Actuator with control system to regulate emissions in an internal combustion engine through variable valve opening and valve duration.

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02-08-2012 дата публикации

System for diagnosing error conditions of a gas flow control system for diesel engines

Номер: US20120197550A1
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A combustion engine evaluation unit is provided that includes, but is not limited to a microcontroller receiving measurement signals from a gas flow control system and outputting a state signal of the gas flow control system. The microcontroller includes, but is not limited to input ports for receiving as first set of measurement signals. Furthermore, the microcontroller includes, but not limited to input ports for receiving as a second set of measurement signals. The microcontroller is configured to calculate a first set of predicted values with a gas flow model based on the first set of measurement signals and calculate a second set of predicted values with a nominal model based on the second set of measurement signals. The microcontroller is also configured to generate the state signal based on a comparison of the first set of predicted values with the second set of predicted values.

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16-08-2012 дата публикации

Variable valve lift mechanism fault detection systems and methods

Номер: US20120209494A1
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A system for a vehicle includes a filtering module, an indicated mean effective pressure (IMEP) determination module, and a stuck mechanism indicator module. The filtering module generates engine speeds based on positions of teeth of a toothed wheel that rotates with a crankshaft and based on a crankshaft position signal generated by a crankshaft position sensor. The IMEP determination module determines an IMEP for a combustion cycle of a cylinder of an engine based on squares of first and second ones of the engine speeds during the combustion cycle. The stuck mechanism indicator module selectively diagnoses a fault in a variable valve lift (VVL) mechanism of the cylinder based on the IMEP.

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06-09-2012 дата публикации

Catalyst warming-up controller for internal combustion engine

Номер: US20120222407A1
Принадлежит: Denso Corp

A catalyst warming-up controller executes a catalyst warming-up control in which an ignition timing is retarded to warm-up a catalyst and performs a compression-stroke injection in which a fuel is injected into a cylinder in a compression stroke. While the catalyst warming-up control is executed, a variable valve timing controller controls a valve timing of an intake valve and/or an exhaust valve to establish a negative-valve-overlap period in which both of the exhaust valve and the intake valve are closed. A fuel injector injects the fuel into a cylinder in this period and a quantity of the compression-stroke injection is decreasingly corrected according to the injection quantity in the above period.

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13-09-2012 дата публикации

Apparatus for sensing cam phaser position

Номер: US20120227696A1
Автор: Christopher Gallmeyer
Принадлежит: Caterpillar Inc

A first target wheel has an opening and rotates about an axis of rotation to move the opening along a generally circular path. A second target wheel adjacent the first target wheel has a second projection projecting into the opening of the first target wheel with the second projection being movable along the generally circular path. A single sensor is positioned adjacent the generally circular path and senses movement of the opening and the second projection past the sensor. An electronic controller may be used to process signals from the sensor to determine the relative angular difference between the first target wheel and the second target wheel.

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27-09-2012 дата публикации

Air-fuel ratio control apparatus for an internal combustion engine

Номер: US20120245823A1
Автор: Mamoru Yoshioka
Принадлежит: Toyota Motor Corp

After rich control for controlling the air/fuel ratio of a mixture to be an air/fuel ratio richer than stoichiometric air/fuel ratio, lean control is carried out so that air/fuel ratio of the mixture formed in the combustion chamber is controlled to be an air/fuel ratio leaner by a predetermined degree than the stoichiometric air/fuel ratio, or the air/fuel ratio of the mixture is controlled to temporarily be the air/fuel ratio leaner by the predetermined degree than the stoichiometric air/fuel ratio. If lean control is carried out after rich control is finished, temporary lean control provides that a degree of how much the air/fuel ratio of the mixture is leaner than the stoichiometric air/fuel ratio when the air/fuel ratio of the mixture is controlled to be the air/fuel ratio leaner than the stoichiometric air/fuel ratio in lean control is lower than the predetermined degree according to the temperature of a catalyst.

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04-10-2012 дата публикации

Engine combustion control at low loads via fuel reactivity stratification

Номер: US20120247421A1
Принадлежит: Individual

A compression ignition (diesel) engine uses two or more fuel charges during a combustion cycle, with the fuel charges having two or more reactivities (e.g., different cetane numbers), in order to control the timing and duration of combustion. By appropriately choosing the reactivities of the charges, their relative amounts, and their timing, combustion can be tailored to achieve optimal power output (and thus fuel efficiency), at controlled temperatures (and thus controlled NOx), and with controlled equivalence ratios (and thus controlled soot). At low load and no load (idling) conditions, the aforementioned results are attained by restricting airflow to the combustion chamber during the intake stroke (as by throttling the incoming air at or prior to the combustion chamber's intake port) so that the cylinder air pressure is below ambient pressure at the start of the compression stroke.

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08-11-2012 дата публикации

Method and System for Engine Speed Control

Номер: US20120283936A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Methods and systems are provided for accurately determining cylinder fueling errors during an automatic engine restart. Fueling errors may be learned during a preceding engine restart on a cylinder-specific and combustion event-specific basis. The learned fueling errors may then be applied during a subsequent engine restart on the same cylinder-specific and combustion event-specific basis to better anticipate and compensate for engine cranking air-to-fuel ratio deviations.

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15-11-2012 дата публикации

Internal Combustion Engine Control Device

Номер: US20120290193A1
Принадлежит: HITACHI LTD

An internal combustion engine control device is provided which can accurately estimate intake pipe temperature behavior during transient time even in an internal combustion engine embedded with a variable valve or a turbocharger. The internal combustion engine control device estimates transient behavior of the intake pipe temperature, on the basis of a flow rate (dGafs/dt) of gas flowing into the intake pipe, a flow rate (dGcyl/dt) of gas flowing from the intake pipe, an intake pipe pressure Pin, and a temporal changing rate (dPin/dt) of the intake pipe pressure. The device performs knocking control during transient time, on the basis of the estimated transient behavior of the intake pipe temperature.

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06-12-2012 дата публикации

Systems and methods for an engine

Номер: US20120304887A1
Автор: Manoj Gokhale
Принадлежит: General Electric Co

Various methods and systems for an engine are provided. In one example, an engine system includes an exhaust passage through which exhaust gas is configured to flow from the engine, and a turbocharger with a turbine positioned in the exhaust passage. The engine system further includes an exhaust gas treatment system disposed in the exhaust passage upstream of the turbine, the exhaust gas treatment system including at least one exhaust gas treatment device and a bypass with a bypass valve, the bypass valve configured to be adjusted to reduce exhaust gas flow through the exhaust gas treatment system in response to a transient engine operating condition.

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10-01-2013 дата публикации

Method and system for controlling fuel usage

Номер: US20130008410A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Methods and systems are provided for improving fluid usage while addressing knock by adjusting the use of spark retard and direct injection of a fluid based on engine operating conditions and the composition of the injected fluid. One or more engine parameters, such as EGR, VCT, boost, throttle position, are coordinated with the direct injection to reduce torque and EGR transients.

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07-03-2013 дата публикации

Engine control unit, engine control system and engine control method

Номер: US20130060455A1
Автор: Shinji Kawasumi

An engine control method includes: a step of running the engine in a forward direction by driving a motor that applies a torque to a crank of the engine in the forward direction in a case where the crank angle of the engine does not lie in the first section; a step of removing any load from the motor in a case where the crank angle of the engine lies in the first section; a step of braking the motor in a case where it is determined in the sixth step that the crank angle of the engine lies in the second section; and a step of running the engine in the forward direction by driving the motor in the forward direction in a case where it is determined that there is the request for restart of the engine.

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14-03-2013 дата публикации

Method and system for adjusting port throttles

Номер: US20130066540A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

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

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28-03-2013 дата публикации

Device and method for controlling start of compression self-ignition engine

Номер: US20130080039A1
Принадлежит: Mazda Motor Corp

A start control device includes a compression self-ignition engine, fuel injectors, a piston stop position detector, a starter motor and a controller for automatically stopping the engine when a predetermined automatic stop condition is satisfied, and thereafter, when a predetermined restart condition is satisfied and a compression-stroke-in-stop cylinder piston stop position is within a reference stop position range set relatively on a bottom dead center side, restarting the engine by injecting the fuel into the compression-stroke-in-stop cylinder while applying the rotational force to the engine using the starter motor. In restarting the engine, when the fuel is injected in the compression-stroke-in-stop cylinder, the controller controls the fuel injector to perform a pre-injection before a main injection and increase a total injection amount of the fuel for the pre-injection as the stop position of the compression-stroke-in-stop cylinder piston is further on a top dead center side.

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04-04-2013 дата публикации

Control apparatus and control method for variable mechanism

Номер: US20130085654A1
Принадлежит: Toyota Motor Corp

In a control apparatus and a control method for a variable mechanism, when a predetermined condition is fulfilled, a movable member ( 3 ) is driven until an engagement portion ( 31 ) contacts one restriction member ( 22 ), and the absolute position of the movable member ( 3 ) when it is determined that displacement of the movable member ( 3 ) is stopped is learned, as a reference position. When supply of electric power is stopped, the absolute position of the movable member ( 3 ) is learned as an initial reference position. When electric power is supplied, the movable member ( 3 ) is driven from the initial reference position until the engagement portion ( 31 ) contacts the one restriction member ( 22 ), and a one-side displacement amount is calculated. If the one-side displacement amount is smaller than a one-side distance, it is determined that a foreign substance is caught in an area on a side of a site corresponding to the one restriction member ( 22 ) in a movable range.

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11-04-2013 дата публикации

Method For Reducing The Rate Of Exhaust Heat Loss

Номер: US20130086887A1
Принадлежит: Deere and Co

Disclosed is a method for reducing the rate of exhaust heat loss. The method comprises the steps of determining whether an engine is motoring and determining whether a diesel particulate filter needs to be regenerated. Further, the method comprises the step of closing an air throttle to a substantially closed position for reducing the flow of intake gas into the engine if the diesel particulate filter needs to be regenerated and if the engine is motoring. Further yet, the method comprises the step of opening the EGR valve to an at least partially open position for allowing the exhaust gas to recirculate through the engine if the diesel particulate filter needs to be regenerated and if the engine is motoring.

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09-05-2013 дата публикации

Method and system for valve operation control

Номер: US20130116866A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

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

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16-05-2013 дата публикации

Valve opening and closing control apparatus

Номер: US20130118428A1
Принадлежит: Aisin Seiki Co Ltd

A valve opening and closing time control apparatus includes; a relative rotation angle control unit performs most delayed angle setting control of setting a relative rotation angle between a driving side rotating body and a driven side rotating body to the most delayed angle when performing an automatic stop, and most delayed angle restriction control of maintaining the relative rotation angle in the most delayed angle from a beginning of the automatic start until reaching a set timing when the automatic start-up begins, and releasing a maintenance of the most delayed angle after the setting timing.

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16-05-2013 дата публикации

Methods and systems for engine starting

Номер: US20130124067A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

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

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06-06-2013 дата публикации

Method and system for pre-ignition control

Номер: US20130139786A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

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

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18-07-2013 дата публикации

Method and Control Unit for Controlling an Internal Combustion Engine

Номер: US20130180506A1
Принадлежит: Continental Automotive GmbH

A method and a control unit are disclosed for controlling a single-cylinder or multiple-cylinder internal combustion engine having at least one fuel injector per cylinder, at least one camshaft for actuating inlet valves and/or outlet valves, and having a control unit which controls the fuel injectors in such a way that they inject in each case one fuel pre-injection per cylinder during a starting phase of the internal combustion engine. In order to make an improved pre-injection strategy possible during the starting phase, according to the invention at least one cylinder pressure signal which is supplied by a cylinder pressure sensor for measuring the pressure in a cylinder is evaluated with regard to interference signals, and the evaluation result is taken into consideration at least during the starting phase in a determination of the camshaft angle.

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19-09-2013 дата публикации

Control apparatus for variable valve actuation system and control method for variable valve actuation system

Номер: US20130239918A1
Принадлежит: Toyota Motor Corp

In a variable valve actuation system capable of changing the angle of action of intake valves by using an actuator whose movement range is between a high end and a low end at which the movement of the actuator is mechanically stopped, it is determined that a fixation is present on condition that the actual amount of movement of the actuator in response to a command A for movement toward the low end that is issued when the present movement position of the actuator is unknown is not more than a prescribed movement criterion value a and that the actual amount of movement in response to a command B output subsequently to the command A in order to cause the actuator to operate in a direction opposite to the direction of the movement in response to the command B is not more than a prescribed movement criterion value b.

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03-10-2013 дата публикации

Control Apparatus Of Internal Combustion Engine

Номер: US20130261938A1
Принадлежит: HITACHI AUTOMOTIVE SYSTEMS LTD

An object of the present invention is to obtain a control apparatus of an internal combustion engine capable of respectively accurately detecting a combustion change in a plurality of combustion modes. In the present invention, the control apparatus of the internal combustion engine operable upon switching the combustion mode sets a detection time and a detection duration to detect a sensor signal of a crank angle sensor 10 in accordance with the combustion mode, and determines whether or not there is the combustion change based on the sensor signal detected by the crank angle sensor 10 at the detection time and for the detection duration set by the control apparatus.

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24-10-2013 дата публикации

Method and system for valve operation control

Номер: US20130281257A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

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

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31-10-2013 дата публикации

Control device for internal combustion engine

Номер: US20130289851A1
Автор: Kentaro NISHIDA
Принадлежит: Toyota Motor Corp

An ECU 70 A is applied to an internal combustion engine 50 of in-cylinder injection type equipped with a fuel injection valve 56 that injects fuel into a combustion chamber E, an intake valve 54 and an exhaust valve 55 provided for the combustion chamber E, and VVTs 57 and 58 that cause the intake valve 54 and the exhaust valve 55 to overlap each other. In a case where the VVTs 57 and 58 cause the intake valve 54 and the exhaust valve 55 to overlap each other to thereby scavenge the combustion chamber E, the ECU 70 A sets the injection pressure of fuel injected by the fuel injection valve 56 lower than that for a case where the intake valve 54 and the exhaust valve 55 are not caused to overlap each other.

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31-10-2013 дата публикации

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

Номер: US20130289852A1
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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21-11-2013 дата публикации

Device for controlling a heat engine

Номер: US20130306037A1
Принадлежит: Valeo Systemes de Controle Moteur SAS

The invention relates to a device for controlling a heat engine, comprising a plurality of cylinders ( 1, 2, 3, 4 ), at least one of which ( 2, 3 ) is provided with at least two inlet valves ( 2 a, 2 b, 3 a, 3 b ). According to the invention, the device comprises a control unit ( 5 ) arranged to deactivate said inlet valves in series.

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02-01-2014 дата публикации

Method and system for pre-ignition control

Номер: US20140000557A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Methods and systems are provided for reducing late burn induced cylinder pre-ignition events. Forced entry of residuals from a late burning cylinder into a neighboring cylinder may be detected based on engine block vibrations sensed in a window during an open exhaust valve of the late burning cylinder. In response to the entry of residuals, a pre-ignition mitigating action, such as fuel enrichment or deactivation, is performed in the neighboring cylinder.

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16-01-2014 дата публикации

Ammonia storage control

Номер: US20140013726A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Various methods for controlling ammonia levels stored in a catalyst by controlling exhaust gas temperatures are provided. In one embodiment, a temperature of a catalyst in an internal combustion engine is determined. If the temperature of the catalyst exceeds a first threshold at which an ammonia capacity of the catalyst for the temperature is below a current stored ammonia level in the catalyst, a load of the engine is reduced including adjusting a torque output of a motor operatively coupled to the engine.

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23-01-2014 дата публикации

Kinetic energy consumer mode control

Номер: US20140025240A1
Принадлежит: MAGNA ELECTRONICS INC

A system for providing a set point increase for a vehicle combustion engine includes a control that is operable to control vehicle secondary systems to control the power consumption of the vehicle secondary systems to increase a mechanical load to the vehicle combustion engine. The load increase of the combustion engine may be for increasing the lost heat, which enhances the filtering of exhaust gases of the vehicle combustion engine. The lost heat may be utilized to increase the heat of a carbon particle filter, through which exhaust gases flow.

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30-01-2014 дата публикации

Variable valve timing for egr control

Номер: US20140026872A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

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

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13-02-2014 дата публикации

Heating of an exhaust gas aftertreatment system by dragging of an internal combustion engine with the aid of an electric motor

Номер: US20140041368A1
Принадлежит: ROBERT BOSCH GMBH

A method is introduced for heating an exhaust-gas aftertreatment system ( 15 ). The method has the following steps: detection of a necessity to heat (S 1 ) the exhaust-gas aftertreatment system ( 15 ), and actuation (S 5 ) of an electric motor ( 5 ) in such a way that the electric motor ( 5 ) drags the internal combustion engine ( 3 ) which produces exhaust gas. Here, the internal combustion engine ( 3 ) is held at a predefinable rotational speed by the electric motor ( 5 ).

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13-02-2014 дата публикации

Methods and systems for assisted direct start control

Номер: US20140045650A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Methods and systems are provided for reducing audible clunks and objectionable drive feel in vehicles including start/stop systems. In one example, a vehicle engine is shutdown during vehicle coasting. The vehicle engine is then restarted, while the vehicle is moving with a torque converter clutch disengaged. A transmission clutch pressure is then adjusted during the restart based on a torque converter output speed relative to a torque converter input speed.

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27-02-2014 дата публикации

Twin scroll turbocharger with egr takeoffs

Номер: US20140053550A1
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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03-04-2014 дата публикации

Cylinder activation/deactivation sequence control systems and methods

Номер: US20140090623A1
Автор: Randall S. Beikmann
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A target cylinder count module determines a target number of cylinders of an engine to be activated during a future period. The future period includes N sub-periods, and N is an integer greater than one. Based on the target number, a first sequence setting module generates a sequence indicating N target numbers of cylinders to be activated during the N sub-periods, respectively. A second sequence setting module retrieves N predetermined sequences for activating and deactivating cylinders during the N sub-periods, respectively, and generates a target sequence for activating and deactivating cylinders during the future period based on the N predetermined sequences. During the future period, a cylinder actuator module: activates opening of intake and exhaust valves of the cylinders that are to be activated based on the target sequence; and deactivates opening of intake and exhaust valves of the cylinders that are to be deactivated based on the target sequence.

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06-01-2022 дата публикации

Multiple cylinder engine

Номер: US20220003160A1
Принадлежит: Impact Consulting and Engineering LLC

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

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06-01-2022 дата публикации

REVERSIBLE TARGET FOR A 3-, 4- OR 6-CYLINDER ENGINE

Номер: US20220003177A1
Принадлежит:

Disclosed is a camshaft toothed wheel, forming a target for a camshaft position sensor, the toothed wheel including a circular body including two opposite main faces, and at least six teeth distributed over the circumference of the circular body, each tooth including two edges, one corresponding to a rising edge and the other to a falling edge, as a function of a direction of rotation of the wheel, the toothed wheel having asymmetry of revolution. The six teeth are shaped so that the toothed wheel includes, considering the same main face and the same direction of rotation of the wheel: four edges of the same first rising or falling type spaced 90° apart, respectively; and six edges of the same second falling or rising type, respectively, spaced 60° apart, respectively. 1121011111213. A camshaft toothed wheel () , forming a target for a camshaft position sensor () , the toothed wheel comprising a circular body () comprising two opposite main faces (A , B) , and at least six teeth () distributed over the circumference of the circular body , each tooth comprising two edges () , one corresponding to a rising edge and the other to a falling edge , as a function of a direction of rotation of the wheel , the toothed wheel having asymmetry of revolution ,{'b': 12', '1, 'wherein the six teeth () are shaped so that the toothed wheel () comprises, considering the same main face and the same direction of rotation of the wheel{'b': '14', 'four edges () of the same first rising or falling type spaced 90° apart, respectively, and'}{'b': '15', 'six edges () of the same second falling or rising type, respectively, spaced 60° apart, respectively.'}21. The camshaft toothed wheel () as claimed in claim 1 , comprising a marking element on one of the two opposite main faces.3117. The toothed wheel () as claimed in claim 1 , comprising on the circumference at least two zones () devoid of edges over an angle of at least 35° claim 1 , the two zones being spaced 180° apart.4117. The toothed ...

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04-01-2018 дата публикации

METHOD AND SYSTEM FOR IMPROVING TURBOCHARGER EFFICIENCY

Номер: US20180003102A1
Автор: VanDerWege Brad Alan
Принадлежит:

Methods and systems are provided for enhancing turbocharger performance for a boosted engine system configured to operate with a pattern of deactivated cylinders. In one example, a method may include, in response to a demand for boost, operating with a cylinder pattern based on boost demand and turbocharger configuration. The specific pattern may depend on the pattern constraints imposed by engine load and NVH metrics. 19-. (canceled)10. A method for a boosted engine system , comprising: 'selectively deactivating individual cylinder valve mechanisms according to a cylinder pattern, the cylinder pattern selected to direct exhaust from active cylinders into one of a plurality of engine turbines.', 'in response to boost demand,'}11. The method of claim 10 , wherein the one of a plurality of engine turbines is a first turbine coupled to a first compressor claim 10 , the engine system further including a second turbine coupled to a second compressor claim 10 , the first and second compressor having distinct compressor outlets.12. The method of claim 11 , wherein the boost demand includes a boost demand to lower than a threshold boost pressure.13. The method of claim 12 , further comprising claim 12 , in response to a boost demand to higher than the threshold boost pressure claim 12 , maintaining all engine cylinders active.14. The method of claim 13 , wherein the cylinder pattern is selected to include a total number of deactivated/active engine cylinders claim 13 , the deactivated engine cylinders selected based on their firing order.15. The method of claim 10 , further comprising claim 10 , selecting the one of a plurality of engine turbines based on turbine temperature.16. The method of claim 15 , wherein the selecting includes claim 15 , selecting the turbine having a lower turbine temperature.17. The method of claim 10 , further comprising claim 10 , selecting the one of a plurality of engine turbines based on turbine speed claim 10 , where the turbine with a higher ...

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04-01-2018 дата публикации

Charge-flow adjustment in closed-loop exhaust temperature control on dual fuel engines

Номер: US20180003118A1
Принадлежит: Cummins Inc

Methods and systems of controlling operation of a dual fuel engine are provided, comprising determining a target exhaust temperature, sensing an actual exhaust temperature, determining an exhaust temperature deviation by comparing the actual exhaust temperature to the target exhaust temperature, comparing the exhaust temperature deviation to a threshold, adjusting at least one of an intake throttle, a wastegate, a compressor bypass valve, an exhaust throttle, a VGT and engine valve timing when the exhaust temperature deviation exceeds the threshold to control charge-flow to the engine, and continuing the adjusting until the exhaust temperature deviation is less than the threshold.

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07-01-2021 дата публикации

Adaptive any-fuel camless reciprocating engine

Номер: US20210003087A1
Принадлежит: UNIVERSITY OF CALIFORNIA

An adaptive, any-fuel reciprocating engine using sensor feedback integration of high-speed optical sensors with real-time control loops to adaptively manage the electronic actuation schemes over a range of engine loads and fuels. The engine uses one or more optical sensors to collect specific types of gas property data via a spectroscopic technique to adaptively control various components within the engine.

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03-01-2019 дата публикации

METHOD FOR REINFORCING ANTI-ENGINE STALL AND VEHICLE

Номер: US20190003407A1
Автор: KIM Sung-Joo
Принадлежит:

A method for reinforcing anti-engine stall may include performing a cam timing control for measuring engine speed of an engine wherein when abnormality of a crank position detector is detected by a controller, engine speed of the engine is controlled to be higher than that at the time when the abnormality of crank position detector occurs while maintaining position for cam phase control operation of a variable timing system. 1. A method for reinforcing anti-engine stall comprising:performing a cam timing control for enhancing modeling an engine speed of an engine by a camshaft position sensor (CMPS) wherein, when abnormality of a crank position detector is detected by a controller, the engine speed of the engine is controlled to be higher than an engine speed at a time when the abnormality of the crank position detector occurs while maintaining position for cam phase control operation of a variable timing system.2. The method according to claim 1 , wherein modeling of revolutions per minute (RPM) of the engine is applied to the engine control claim 1 , wherein the modeling is calculated by the camshaft position sensor (CMPS).3. The method according to claim 2 , wherein the engine RPM modeling is continuously performed with activation of the engine.4. The method according to claim 1 , wherein the maintaining of the position of the variable timing system includes maintaining a state at a time when the abnormality of the crank position detector is detected and switching the state to a default state after a limp home to secure stability of engine RPM.5. The method according to claim 1 , wherein a diagnostic trouble code is applied to the cam timing control until the diagnostic trouble code is displayed.6. The method according to claim 1 , wherein the cam timing control includes:detecting the abnormality of the crank position detector with respect to a crankshaft after the engine is activated and controlled;determining values of engine control to engine RPM modeling ...

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03-01-2019 дата публикации

SYSTEMS AND METHODS FOR A SPLIT EXHAUST ENGINE SYSTEM

Номер: US20190003412A1
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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03-01-2019 дата публикации

Dynamic charge compression ignition engine with multiple aftertreatment systems

Номер: US20190003442A1
Принадлежит: Tula Technology Inc

Methods, devices, controllers, and algorithms are described for operating an internal combustion engine wherein at least some firing opportunities utilize low temperature gasoline combustion (LTGC). Other firing opportunities may be skipped or utilize some other type of combustion, such as spark ignition. The nature of any particular firing opportunity is dynamically determined during engine operation, often on a firing opportunity by firing opportunity basis. Firings that utilize LTGC produce little, if any, nitrous oxides in the exhaust stream and thus, in some implementations, may require no aftertreatment system to remove them from the exhaust stream.

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03-01-2019 дата публикации

DYNAMIC CHARGE COMPRESSION IGNITION ENGINE WITH MULTIPLE AFTERTREATMENT SYSTEMS

Номер: US20190003443A1
Принадлежит:

Methods, devices, controllers, and algorithms are described for operating an internal combustion engine wherein at least some firing opportunities utilize low temperature gasoline combustion (LTGC). Other firing opportunities may be skipped or utilize some other type of combustion, such as spark ignition. The nature of any particular firing opportunity is dynamically determined during engine operation, often on a firing opportunity by firing opportunity basis. Firings that utilize LTGC produce little, if any, nitrous oxides in the exhaust stream and thus, in some implementations, may require no aftertreatment system to remove them from the exhaust stream. 1. A vehicle , comprising:an internal combustion engine having at least one cylinder, the at least one cylinder arranged to selectively operate in either a stoichiometric mode or a lean burn mode;a first aftertreatment system for treating exhaust from the at least one cylinder when operating in the stoichiometric mode; anda second aftertreatment system for treating exhaust from the at least one cylinder when operating in the lean burn mode.2. The vehicle of claim 1 , wherein the at least one cylinder further comprises a first exhaust valve arranged to provide a passageway to the first aftertreatment system and a second exhaust valve arranged to provide a second passageway to the second aftertreatment system.3. The vehicle of claim 2 , further comprising an engine controller to selectively open either the first exhaust valve or the second exhaust valve depending on if the at least one cylinder is operating in the stoichiometric mode or the lean burn mode respectively.4. The vehicle of claim 1 , further comprising an engine controller configured to control the operation of the at least one cylinder claim 1 , the engine controller configured to determine if the at least one cylinder should operate in stoichiometric mode or the lean burn mode on a working cycle per working cycle basis.5. The vehicle of claim 1 , ...

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12-01-2017 дата публикации

CONTROL APPARATUS FOR VEHICLE

Номер: US20170008527A1
Автор: NISHIDA Hideyuki
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A first control unit executes a valve stop inertial running including stopping an intake valve and an exhaust valve in a closed state during rotation of an output shaft, stopping supply of fuel to an engine, and setting a clutch in an engaged state to drive pistons of the engine by a rotational force from driving wheels. A second control unit executes a valve operation running including operating the intake valve and the exhaust valve during the rotation of the output shaft, and supplying the fuel to the engine based upon an intake conduit pressure. When a cancellation request is made during execution of the valve stop inertial running, a transient control unit operates the intake valve and the exhaust valve, and controls a throttle valve to an idling opening or less, thereby supplying a negative pressure to an intake passage. 1. A control apparatus for a vehicle configured to control a vehicle comprising a valve operation mechanism that can stop an intake valve and an exhaust valve in an engine in a closed state during rotation of an output shaft in the engine , and a clutch that can switch a power transmission route between the engine and a driving wheel between an engaged state and a disengaged state , comprising:a first control unit configured to execute a valve stop inertial running including stopping the intake valve and the exhaust valve in the closed state during the rotation of the output shaft, stopping supply of fuel to the engine, controlling a throttle valve of the engine to an idling opening or less, and setting the clutch in the engaged state to drive pistons of the engine by a rotational force from the driving wheel through the output shaft;a second control unit configured to execute a valve operation running including operating the intake valve and the exhaust valve during the rotation of the output shaft, and supplying the fuel to the engine; anda transient control unit configured to execute a transient running including operating the intake valve ...

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12-01-2017 дата публикации

COORDINATION OF CAM TIMING AND BLOW-THROUGH AIR DELIVERY

Номер: US20170009644A1
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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12-01-2017 дата публикации

Multi-level skip fire

Номер: US20170009729A1
Принадлежит: Tula Technology Inc

In one aspect, a method for controlling operation of an internal combustion engine is described. The engine is operated in a skip fire manner such that selected skipped working cycles are skipped and selected active working cycles are fired to deliver a desired engine output. A particular level of torque output is selected for each of the fired working chambers. Various methods, arrangements and systems related to the above method are also described.

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27-01-2022 дата публикации

PROCESSING OF SIGNALS FROM A CRANKSHAFT SENSOR

Номер: US20220025827A1
Принадлежит:

Disclosed is a method for processing signals from a crankshaft sensor including the following steps: detection of a stopping of the engine; simulation and transmission of a backwards-running square waveform; and simulation and transmission of a forwards-running square waveform. Also disclosed is a processing module configured to implement such a method. 161245. A method whereby a processing module () processes signals from a crankshaft sensor () in order to determine the position of an internal combustion engine upon a starting of said engine following a stopping thereof , said crankshaft sensor comprising a crankshaft wheel () comprising a determined number of teeth and at least one index () allowing a position in the revolution to be identified , said sensor being able , in combination with a processing device () for processing said signals , to determine the position of the crankshaft and direction of rotation of the crankshaft , from said signals comprising forwards-running and backwards-running square waveforms , 'detection of a stopping of said internal combustion engine, and,', 'the method comprising{'b': '5', 'claim-text': [{'b': '5', 'suspension of the transmission to the processing device () of an “engine stopped” status signal, and then'}, {'b': 6', '5', '8, 'simulation by the processing module () and transmission to the processing device () of a backwards-running square waveform (),'}, {'b': 6', '5', '9', '5, 'simulation by the processing module () and transmission to the processing device () of a forwards-running square waveform (), leading to a detection by the processing device () that the crankshaft is running forwards, and,'}, {'b': 8', '9', '5', '5, 'following the transmission of the two simulated square waveforms (, ) to the processing device (), the lifting of said suspension and the transmission of the “engine stopped” status signal to the processing device ().'}], 'if the last square waveform received by the processing device () before the ...

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14-01-2016 дата публикации

Oil supply device for engine

Номер: US20160010519A1
Принадлежит: Mazda Motor Corp

An oil supply device for an engine is provided with an oil pump of a variable capacity type; a plurality of hydraulically operated devices connected to the pump via an oil path; a pump control unit which changes the capacity of the pump to control a discharge amount of oil; and a hydraulic pressure detecting unit which detects a hydraulic pressure of the oil path. The plurality of the hydraulically operated devices include a metal bearing, and the pump control unit sets a highest requested hydraulic pressure among requested hydraulic pressures of the hydraulically operated devices as a target hydraulic pressure for each of the operating conditions of the engine, and changes the capacity of the pump in such a manner that the hydraulic pressure detected by the hydraulic pressure detecting unit coincides with the target hydraulic pressure for controlling the discharge amount.

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11-01-2018 дата публикации

CONTROL METHOD FOR INLET SWIRL DEVICE

Номер: US20180010514A1
Автор: HANIG Urs, SHUTTY John
Принадлежит: BORGWARNER INC.

A number of variations may include a method comprising selectively actuating an inlet swirl device to cause a compressor to windmill at a higher speed during an operation mode where fuel consumption of an engine in the vehicle is at a minimal or before an acceleration event. 1. A method comprising:selectively actuating an inlet swirl device to cause a compressor to windmill at a higher speed during an operation mode where fuel consumption of an engine in the vehicle is at a minimal or before an acceleration event.2. The method of wherein the operation mode is at least one of a braking mode claim 1 , a deceleration mode claim 1 , or a coasting mode.3. The method of wherein the operation mode is a gear shift.4. A control method for an inlet swirl device in an engine in a vehicle comprising:determining whether the vehicle is operating in at least one of a first mode, a second mode, or a third mode;actuating a plurality of vanes in the inlet swirl device to move to at least one first angle based on at least one engine control operation in the first mode;actuating the plurality of vanes in the inlet swirl device to move to at least one second angle to induce a high level of swirl of a fluid flow exiting the inlet swirl device in the second mode; andactuating the plurality of vanes in the inlet swirl device to move to at least one third angle to induce the high level of swirl of the fluid flow exiting the inlet swirl device in the third mode.5. The control method of wherein in the first mode claim 4 , fuel consumption by the engine is high claim 4 , and wherein in the second mode fuel consumption by the engine is at a minimum.6. The control method of wherein in the third mode claim 4 , an acceleration event of the vehicle is anticipated.7. The control method of wherein the at least one first angle achieves maximum efficiency of the engine and the at least one second angle and the at least one third angle cause a compressor in the engine to windmill at a high speed.8. The ...

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14-01-2021 дата публикации

Control device for internal combustion engine

Номер: US20210010434A1
Принадлежит: Toyota Motor Corp

A control device for the internal combustion engine is provided with a carbon dioxide concentration control part configured to cause a concentration of carbon dioxide in exhaust flowing into the filter to decrease when the temperature of the filter becomes a predetermined first temperature setting or more and less than a predetermined second temperature setting. The first temperature setting is made a temperature selected from a temperature band at which ash deposited on the filter can be made to be separate from the filter when the inside of the filter is in an atmosphere where the concentration of carbon dioxide is lower than when it is in an exhaust atmosphere. The second temperature setting is made a temperature set so as to prevent excessive temperature rise of the catalyst device.

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10-01-2019 дата публикации

METHOD FOR REGENERATING A PARTICLE FILTER FOR AN INTERNAL COMBUSTION ENGINE

Номер: US20190010882A1
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A method and system for regenerating a gasoline particle filter of an internal combustion engine is provided in which a value (Q) for a quantity of soot collected inside of the gasoline particle filter and a value (T) for a temperature of the gasoline particle filter are determined. The internal combustion engine is operated in a lean mode when the value (Q) for the soot quantity is greater than a first threshold, and the value (T) for the temperature of the gasoline particle filter is greater than a threshold. 110-. (canceled)11. A method for regenerating a gasoline particle filter of an internal combustion engine , comprising:determining a value for a quantity of soot collected inside of the gasoline particle filter;determining a value for a temperature of the gasoline particle filter;operating the internal combustion engine in a lean mode when the value for the soot quantity is greater than a first threshold, and the value for the temperature of the gasoline particle filter is greater than a temperature threshold.12. The method according to claim 11 , further comprising heating the gasoline particle filter if the value for the temperature of the gasoline particle filter is less than the temperature threshold claim 11 , and the value for the soot quantity is greater than a second threshold claim 11 , wherein the second threshold is greater than the first threshold.13. The method according to claim 12 , wherein the determined value for the quantity of soot collected inside of the gasoline particle filter is estimated.14. The method according to claim 12 , wherein the step of heating the gasoline particle filter comprises the step of operating the ICE with a higher engine load.15. The method according to claim 11 , wherein the step of operating the internal combustion engine in a lean mode comprises increasing the quantity of oxygen supplied to the gasoline particle filter by increasing an air/fuel ratio of the air/fuel mixture supplied to the internal combustion ...

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10-01-2019 дата публикации

SYSTEM AND METHOD FOR ADAPTING COMBUSTION TO MITIGATE EXHAUST OVERTEMPERATURE

Номер: US20190010883A1
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A system and method for monitoring the temperature in a vehicle after-treatment system is provided. The system includes one or more temperature sensors positioned in the vehicle after-treatment system and an electronic control unit (ECU) configured by programming instructions encoded in computer readable media to execute a method. The method includes monitoring the temperature presented by the one or more temperature sensors, executing a lower oxygen combustion strategy for a slower exothermic reaction when the temperature exceeds a first threshold level, and deactivating the lower oxygen combustion strategy when the temperature drops below a second threshold level. 1. A method in a vehicle , comprising:monitoring the temperature in a vehicle after-treatment system;executing a lower oxygen combustion strategy for a slower exothermic reaction when the temperature exceeds a first threshold level; anddeactivating the lower oxygen combustion strategy when the temperature drops below a second threshold level.2. The method of claim 1 , wherein the monitoring is performed by a vehicle electronic control unit (ECU).3. The method of claim 2 , wherein the executing is performed under the control of the ECU.4. The method of claim 3 , wherein the deactivating is performed under the control of the ECU.5. The method of claim 1 , wherein the lower oxygen combustion strategy comprises reducing oxygen content by reducing airflow into one or more combustion cylinders.6. The method of claim 5 , wherein the lower oxygen combustion strategy comprises reducing oxygen content by adding EGR gases into one or more combustion cylinders.7. The method of claim 1 , wherein the lower oxygen combustion strategy comprises delaying the main injection SOI (start of injection).8. The method of claim 1 , wherein the lower oxygen combustion strategy comprises reducing the air-to-fuel ratio and combustion efficiency in the combustion chamber by adding one or more after injections.9. The method of claim ...

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09-01-2020 дата публикации

CYLINDER DEACTIVATION AND ENGINE BRAKING FOR THERMAL MANAGEMENT

Номер: US20200011257A1
Принадлежит: Eaton Intelligent Power Limited

A method for exhaust temperature management in a multiple-cylinder, reciprocating-piston engine, comprising sensing a low temperature condition of the exhaust and implementing an increased heat output engine cycle pattern for the engine based on the sensed low temperature condition. The increased heat output engine cycle pattern comprises deactivating fuel injection to a first cylinder of the engine, the first cylinder comprising a piston reciprocating between top-dead-center and bottom-dead-center. Also, activating engine braking mode on the first cylinder by opening one or more valves when the piston is away from bottom-dead-center during a compression stroke. A second cylinder of the engine is fired in a combustion mode while the first cylinder is in engine braking mode. 1. A method for exhaust temperature management in a multiple-cylinder , reciprocating-piston engine , comprising:sensing a low temperature condition of the exhaust; deactivating fuel injection to a first cylinder of the engine, the first cylinder comprising a piston reciprocating between top-dead-center and bottom-dead-center; and', 'activating engine braking mode on the first cylinder by opening one or more valves when the piston is away from bottom-dead-center during a compression stroke; and, 'implementing an increased heat output engine cycle pattern for the engine in response to the sensed low temperature condition, comprisingfiring a second cylinder of the engine in a combustion mode while the first cylinder is in engine braking mode.2. The method of claim 1 , wherein implementing an increased heat output engine cycle pattern further comprises: deactivating fuel injection to a third cylinder of the engine; and', 'deactivating an intake valve and an exhaust valve to close the third cylinder., 'deactivating in a cylinder deactivation mode, comprising3. The method of claim 1 , wherein the one or more valves comprise at least one intake valve and at least one exhaust valve claim 1 , and wherein ...

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03-02-2022 дата публикации

Secondary Throttle Control Systems and Methods

Номер: US20220034269A1
Принадлежит:

An engine system includes: a first throttle valve; a turbocharger compressor disposed downstream of the first throttle valve; a charge air cooler disposed downstream of the turbocharger compressor; a second throttle valve located downstream of the turbocharger compressor; a purge inlet located downstream of the first throttle valve and configured to introduce fuel vapor from a fuel tank into intake air; and an engine control module configured to: maintain the first throttle valve in a fully open position; and selectively close the first throttle valve relative to the fully open position in response to receipt of a request to at least one of: purge fuel vapor from the fuel tank; and at least one of decrease and prevent icing of the charge air cooler. 1. An engine system , comprising:a first throttle valve;a turbocharger compressor disposed downstream of the first throttle valve;a charge air cooler disposed downstream of the turbocharger compressor;a second throttle valve located downstream of the turbocharger compressor;a purge inlet located downstream of the first throttle valve and configured to introduce fuel vapor from a fuel tank into intake air; and maintain the first throttle valve in a fully open position; and', 'selectively close the first throttle valve from the fully open position in response to receipt of a request to purge the fuel vapor from the fuel tank., 'an engine control module configured to2. The engine system of wherein the engine system does not include a purge pump configured to pump the fuel vapor from the fuel tank to the purge inlet.3. The engine system of wherein the charge air cooler is an air-to-air charge air cooler.4. The engine system of wherein the engine control module is further configured to selectively close the first throttle valve relative to the fully open position in response to receipt of a request to decrease air induction noise.5. The engine system of wherein the engine control module is further configured to selectively ...

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03-02-2022 дата публикации

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

Номер: US20220034271A1
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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18-01-2018 дата публикации

FAILURE DIAGNOSIS APPARATUS FOR VARIABLE COMPRESSION RATIO MECHANISM

Номер: US20180016995A1
Принадлежит:

A failure diagnosis apparatus according to the present disclosure is applied to a variable compression ratio mechanism that can switch the compression ratio of an internal combustion engine between at least a first compression ratio and a second compression ratio lower than the first compression ratio. When the variable compression ratio mechanism is controlled so as to set the compression ratio of the internal combustion engine to the second compression ratio, the failure diagnosis apparatus advances the ignition timing of one cylinder to a knock inducing ignition timing more advanced than the MBT that does not lead to the occurrence of knock if the actual compression ratio of that cylinder is the second compression ratio but leads to the occurrence of knock if the actual compression ratio of that cylinder is the first compression ratio and diagnoses failure of the variable compression ratio mechanism on the basis of whether knock occurs or not. 1. A failure diagnosis apparatus for a variable compression ratio mechanism for use in a spark-ignition internal combustion engine provided with a variable compression ratio mechanism capable of switching the compression ratio of the internal combustion engine having a plurality of cylinders between at least a first compression ratio and a second compression ratio lower than the first compression ratio and including a compression ratio changing mechanism provided in each of the cylinders of the internal combustion engine , a knock sensor attached to the internal combustion engine , and an ignition plug attached to each of the cylinders of the internal combustion engine ,the failure diagnosis apparatus comprising:a controller comprising at least one processor configured to:perform advancing process for diagnosis to advance the ignition timing of one cylinder of the internal combustion engine to a knock inducing ignition timing more advanced than the MBT that does not lead to the occurrence of knock if the actual compression ...

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17-01-2019 дата публикации

Controller for internal combustion engine

Номер: US20190017457A1
Принадлежит: Aisin Seiki Co Ltd

A controller for an internal combustion engine includes: a failure determination section which determines a failure state in a case where a relative rotation phase of an intake side valve opening and closing timing control mechanism does not change when controlling the mechanism after starting the driving of a starter motor and trying to change the relative rotation phase of the mechanism in a start control for starting an internal combustion engine. When the section determines a failure, the controller performs at least one of an intake air amount increase control in which an opening degree of a throttle valve is increased, an ignition timing advance angle control in which injection of fuel is performed at a timing earlier than a set timing and ignition is performed, and a multi-injection control in which the fuel is injected immediately before the ignition in addition to the fuel injection in an intake stroke.

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21-01-2021 дата публикации

Continuous variable valve duration apparatus and engine provided with the same

Номер: US20210017885A1
Принадлежит: Hyundai Motor Co, Kia Motors Corp

A continuous variable valve duration apparatus may include a camshaft, a cam unit on which a cam is formed, wherein the camshaft is inserted into the cam unit, a guide bracket having an upper guide boss formed thereon, an internal wheel transmitting rotation of the camshaft to the cam unit, a wheel housing in which the internal wheel is rotatable inserted, wherein the wheel housing includes a guide shaft on which a guide screw thread is formed and the guide shaft is inserted into the upper guide boss to be movable, a worm wheel to which an internal screw thread engaging with the guide screw thread is formed therewithin, and to which an external screw thread is formed thereon, and a control shaft on which a control worm engaging with the external screw thread is formed.

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22-01-2015 дата публикации

Stop control apparatus for internal combustion engine

Номер: US20150020773A1
Автор: Yuta Tsukada
Принадлежит: Toyota Motor Corp

A stop control apparatus ( 100 ) for an internal combustion engine performs stop control of a three-or-less cylinder internal combustion engine ( 200 ). The stop control apparatus for the internal combustion engine is provided with: a determining device ( 161 ) configured to determine a compression stroke immediately before the internal combustion engine stops; and a throttle valve controlling device ( 168 ) configured to control an opening degree of a throttle valve ( 208 ) to be a predetermined opening degree while an intake valve ( 211 ) is closed in all cylinders, in the compression stroke immediately before the internal combustion engine stops, which is determined by the determining device. This reduces an influence of an intake negative pressure in an intake stroke, and makes it possible to preferably control the crank angle when the engine stops, even in the three-or-less cylinder internal combustion engine.

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16-01-2020 дата публикации

CYLINDER RECHARGING STRATEGIES FOR CYLINDER DEACTIVATION

Номер: US20200018197A1
Принадлежит: Eaton Intelligent Power Limited

A multiple-cylinder diesel engine system comprises an intake valve and an exhaust valve for each of the multiple cylinders. A valve control system is connected to selectively deactivate an intake valve and an exhaust valve for a selected cylinder. A fuel injection control system is connected to selectively deactivate fuel injection to the selected cylinder while increasing fuel to firing cylinders. The multiple cylinder diesel engine enters a cylinder deactivation mode whereby the valve control system deactivates the intake valve and the exhaust valve and the fuel injection control system deactivates the fuel injection to the cylinder while continuing to fire other cylinders of the multiple cylinder diesel engine. The valve control system selectively opens the deactivated intake valve to relieve a negative pressure condition in the deactivated cylinder. Alternatively, the valve control system opens the deactivated exhaust valve to relieve a negative pressure condition in the deactivated cylinder. 1. A method for cylinder deactivation in a multiple-cylinder diesel engine , comprising:selectively deactivating fuel injection to a selected cylinder of the diesel engine;selectively deactivating an intake valve and an exhaust valve for the selected cylinder in the diesel engine;firing at least one of the remaining cylinders of the diesel engine while the selected cylinder is deactivated;cycling a set of reciprocating pistons in both the selected cylinder and the firing cylinders; andintermittently selectively opening one or both of the intake valve and the exhaust valve for the selected cylinder to relieve a negative pressure condition in the selected cylinder.2. The method of claim 1 , wherein the selective opening is a low-lift claim 1 , late intake valve opening event (LIVO).3. The method of claim 1 , further comprising switching between a 4-stroke mode and an 8-stroke mode to relieve the negative pressure condition.4. The method of claim 1 , further comprising ...

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16-01-2020 дата публикации

DECELERATION CYLINDER CUTOFF SYSTEM INCLUDING SMART PHASER

Номер: US20200018251A1
Принадлежит:

An internal combustion engine includes a cylinder and a valve assembly configured to activate and deactivate the at least one cylinder. The valve assembly includes an intake valve configured to control air flow into the at least one cylinder. A controller outputs a first control signal to the valve assembly to deactivate the at least one cylinder in response to detecting a deceleration event. The controller also outputs a second control signal to command the valve assembly to delay opening the intake valve from a closed position after re-activating the cylinder so that the torque output produced in response to re-activating the cylinder is reduced. 1. A vehicle comprising:an internal combustion engine including at least one cylinder;a valve assembly configured to activate and deactivate the at least one cylinder, the valve assembly including an intake valve configured to control air flow into the at least one cylinder; andan electronic controller configured to output a first control signal to the valve assembly to deactivate the at least one cylinder in response to detecting a deceleration event and to output a second control signal to command the valve assembly to delay opening the intake valve from a closed position after re-activating the at least one cylinder.2. The vehicle of claim 1 , wherein the internal combustion engine further comprises a piston reciprocably disposed in the at least one cylinder claim 1 , and wherein the electronic controller outputs the second control signal based on a position of the piston after re-activating the at least one cylinder.3. The vehicle of claim 2 , wherein the electronic controller outputs the second control signal in response to the position of the piston reaching a position threshold.4. The vehicle of claim 3 , wherein an amount of air drawn into the at least one cylinder meets an air target value in response to opening the intake valve.5. The vehicle of claim 4 , wherein the air target value changes based on at least ...

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16-01-2020 дата публикации

ENGINE CONTROLLER AND ENGINE CONTROL METHOD

Номер: US20200018253A1
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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28-01-2016 дата публикации

Optimization-based controls for diesel engine air-handling systems

Номер: US20160025020A1
Принадлежит: Cummins Inc

System, apparatus, and methods are disclosed for a computing a first set of parameters based on operational states of an internal combustion engine and an air handling system, a second set of parameters based on a linear time varying model, and one or more control commands based upon a minimization or maximization of a cost function over a prediction horizon, the second set of parameters, and at least one physical constraint of the internal combustion engine, and controlling one or more operations based at least in part upon the one or more control commands. The acts of determining the first and second set of parameters and computing the one or more control commands are repeated over a plurality of time periods over which the first set of parameters and the second set of parameters are time variant.

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26-01-2017 дата публикации

Method and system for removing sulfur from a lean nox trap

Номер: US20170022863A1
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

A method of removing sulfur from a lean NOx trap of a mild hybrid vehicle while the vehicle is stationary is disclosed, the method comprising connecting an electrical system of the vehicle to a large capacity external battery, operating an integrated starter generator driven by an engine of the vehicle as a generator to load the engine thereby allowing the engine to be operated at a higher torque level and rich of stoichiometric and storing the electrical energy produced by the integrated starter generator in the large capacity battery during the time period required for the removal of sulfur from the lean NOx trap.

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17-04-2014 дата публикации

Method for determining a starting position of a cyclic movement

Номер: US20140107904A1
Принадлежит: ROBERT BOSCH GMBH

A method for determining an initial position of a cyclic motion, includes: recording successive encoder signals to obtain a signal sequence; continuously comparing the recorded signal sequence with a group of possible signal sub-sequences of a reference signal sequence encompassing a sequence of signal positions for at least one complete motion cycle, each of the signal sub-sequences being associated with one or more possible initial positions of the cyclic motion; eliminating one or more signal sub-sequences which do not coincide with the signal sequence or whose initial portions do not coincide with the signal sequence; and determining as the initial position one of the initial positions that are associated with the possible remaining signal sub-sequence.

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10-02-2022 дата публикации

REVERSE-ROTATION ROBUST SYNCHRONIZATION METHOD

Номер: US20220042469A1
Принадлежит:

Disclosed is a method for synchronizing an internal combustion engine including at least one camshaft, on which a target is mounted, a position sensor for sensing the position of the camshaft and a processing unit, the method transmitting a synchronization or synchronization fault signal as a function of the determined direction of rotation of the target. 2140150110120120. The synchronization method as claimed in claim 1 , wherein claim 1 , if the detected edge is determined to be corresponding to an edge of the target in forward rotation claim 1 , and to be corresponding to an edge of the target in reverse rotation claim 1 , and if the time signature of the detected edge is within the range of tolerance values of a theoretical signature of a single edge () claim 1 , the detected edge is identified as the edge corresponding to the theoretical signature claim 1 , and if the time signature of the detected edge is within the range of tolerance values of a theoretical signature of more than one candidate edge () claim 1 , the steps of computing a time signature () and of comparing () the time signature with the following edge are repeated claim 1 , the comparison () only being implemented with the theoretical signatures of the edges following the candidate edges.5. The synchronization method as claimed in claim 1 , wherein the range of tolerance values associated with each theoretical signature of the set of theoretical signatures of the edges of the target is reduced when the engine speed drops below a predetermined threshold.6100220. The synchronization method as claimed in claim 1 , comprising claim 1 , if claim 1 , during the implementation of the method () for identifying the detected edge considering a forward rotation of the target claim 1 , no correspondence is detected claim 1 , transmitting () a synchronization fault signal (Wtsyn).7210. The synchronization method as claimed in claim 1 , comprising claim 1 , if the detected edge is determined to be ...

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29-01-2015 дата публикации

Hydraulic system including a kinetic energy storage device

Номер: US20150027109A1
Автор: Darryl Cottingham
Принадлежит: JC Bamford Excavators Ltd

A hydraulic system including hydraulic fluid, a hydraulic machine for pressuring the hydraulic fluid, a hydraulic circuit for delivering the hydraulic fluid to a hydraulic actuator, the hydraulic machine being configured to receive the hydraulic fluid from the hydraulic actuator and a kinetic energy storage device for storing energy in a kinetic form, the kinetic energy storage device being operably coupled to the hydraulic machine, the system being configured such that the hydraulic machine is operable to transfer energy from the hydraulic fluid received from the hydraulic actuator to the kinetic energy storage device.

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29-01-2015 дата публикации

CONTROL DEVICE FOR COOLING SYSTEM

Номер: US20150027387A1
Принадлежит:

The influenced of condensed water on an EGR device is alleviated. 1. A control device for a cooling system , which controls the cooling system in a vehicle including an internal combustion engine , an EGR device including an EGR cooler , and the cooling system that is able to cool cooled objects , including the internal combustion engine and the EGR device , through circulation of coolant ,the cooling system includinga flow passage portion that is able to pass the coolant and that includes an engine cooling flow passage for cooling the internal combustion engine, an EGR cooling flow passage for cooling the EGR device, a radiator flow passage that passes through a radiator and a bypass flow passage that bypasses the radiator; andadjusting means for being able to adjust a circulation amount of the coolant in a first flow passage including the engine cooling flow passage, the EGR cooling flow passage and the radiator flow passage and a second flow passage including the engine cooling flow passage, the EGR cooling flow passage and the bypass flow passage and not including the radiator flow passage, the control device comprising:measuring means for measuring a temperature of the coolant;limiting means for limiting circulation of the coolant at starting the internal combustion engine; andcontrol means for circulating the coolant preferentially through the second flow passage via control over the adjusting means based on the measured temperature in a period in which circulation of the coolant is limited, wherein the limiting means prohibits circulation of the coolant before the coolant is circulated preferentially through the second flow passage by the control means.2. (canceled)3. The control device for the cooling system according to claim 1 , wherein the control means circulates the coolant only through the second flow passage.4. The control device for the cooling system according to claim 1 , wherein the control means circulates the coolant such that the temperature of ...

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23-01-2020 дата публикации

SEPARATELY DETERMINING FIRING DENSITY AND PUMPING DENSITY DURING FIRING DENSITY TRANSITIONS FOR A LEAN-BURN INTERNAL COMBUSTION ENGINE

Номер: US20200025050A1
Принадлежит:

A skip fire engine controller and method of control is described wherein during transitions from a first firing density to a second firing density, a firing density and a pumping density are separately set so as to balance the conflicting demands of (a) torque control, (b) Noise, Vibration and Harshness (NVH), (c) air flow through the engine and (d) air-fuel ratio. 1. An engine controller in a vehicle for controlling a lean burn internal combustion engine , the controller configured to:determine a target firing density while operating the internal combustion engine at a first firing density, the target firing density suitable to meet a requested torque demand for the internal combustion engine;determine a firing density during the transition from the first firing density to the target firing density;determine a pumping density during the transition from the first firing density to the target firing density;operate the internal combustion engine during the transition by:selectively firing or not firing each firing opportunity in accordance with the determined firing density;for each firing opportunity which is not fired, selectively either (a) pumping or (b) not pumping air through the internal combustion engine in accordance with the determined pumping density.2. The engine controller of claim 1 , wherein the firing density and the pumping density through the transition are determined to meet the requested torque demand claim 1 , while balancing the demands of operation at an acceptable Noise claim 1 , Vibration and Harshness (NVH) level and minimizing exhaust emissions.3. The engine controller of claim 1 , further configured to separately adjust:the firing density to mitigate excessive NVH; andthe pumping density to mitigate excessive emissions caused by too much or too little air flow through the internal combustion engine.4. The engine controller of claim 1 , when the first firing density is greater than the target firing density claim 1 , further configured to: ...

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23-01-2020 дата публикации

Internal combustion engine and method to increase the temperature of a liquid in the internal combustion engine

Номер: US20200025119A1
Принадлежит: Cummins Inc

A method, controller, and internal combustion engine including the controller and operable in accordance with the method by: determining a temperature of a working liquid in an engine block circuit ( 31, 35 ) of the internal combustion engine ( 10 ), the working liquid comprising a cooling liquid or a lubrication liquid; operating the internal combustion engine ( 10 ); engaging a thermal load responsive to the temperature of the liquid being below a first temperature threshold, wherein engaging the thermal load comprises at least one of increasing a pumping load of the internal combustion engine ( 10 ), or changing an air/fuel ratio, thereby adding heat to the engine block circuit ( 31, 35 ); controlling the thermal load as a function of the temperature of the liquid; and disengaging at least a portion of the thermal load responsive to the temperature of the liquid being above the low temperature limit.

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23-01-2020 дата публикации

CYLINDER DETECTION IN A FOUR-STROKE INTERNAL COMBUSTION ENGINE

Номер: US20200025123A1
Принадлежит: SCANIA CV AB

An arrangement for cylinder detection in a four-stroke internal combustion engine is disclosed. The arrangement comprises a first disc connected to a crankshaft, the first disc comprising a first mark (M-M) within each an interspace angle (α), and a second disc connected to a camshaft and comprising one second mark (M-M) per number of cylinders. The first mark (M-M) is arranged on a first disc, or the plurality of first marks (M-M) are arranged in relation to each other on the first disc, and the second marks (M-M) are arranged in relation to each other on the second disc such that for each interspace angle (α) the relevant first mark (M-M) is detectable by a first sensor and the relevant second mark (M-M) is detectable by a second sensor at different relative rotational positions between the first disc and the second disc. 11616. An arrangement for cylinder detection in a four-stroke internal combustion engine , the four-stroke internal combustion engine comprising a crankshaft , at least two cylinders with one piston each , and a camshaft connected to the crankshaft , wherein the crankshaft performs a 720-degree rotation while the camshaft performs a 360-degree rotation , wherein each piston is connected to the crankshaft and reciprocates in its cylinder , each piston being arranged to assume an ignition top dead centre position corresponding to a top rotational position (TRP-TRP) of the crankshaft over the 720-degree rotation of the crankshaft , wherein an interspace angle (α) of the crankshaft extends between each of the top rotational positions (TRP-TRP) , and wherein the arrangement comprises:{'b': 11', '13, 'a first disc connected to the crankshaft, the first disc comprising a first mark (M-M) within each interspace angle (α);'}{'b': 21', '26, 'a second disc connected to the camshaft and comprising one second mark (M-M) per number of cylinders;'}{'b': 11', '13', '11', '13, 'a fixed first sensor for detecting the first mark (M-M), or a plurality of first marks ...

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29-01-2015 дата публикации

DIESEL ENGINE STEADY STATE AND TRANSIENT HYBRID OPTIMIZATION

Номер: US20150032308A1
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A method for selecting an engine operating point in a multi-mode powertrain system includes monitoring a desired axle torque based on an operator torque request and vehicle speed. For each available combustion mode of the diesel engine, engine torque and speed ranges are received and a plurality of fuel losses and a plurality of emissions losses are retrieved, each fuel and emissions loss corresponding to respective ones of a plurality of engine operating points within the engine torque and speed ranges. The respective fuel and emissions losses are compared at each of a plurality of potential engine operating points within the engine torque and speed ranges of the available combustion modes. A desired engine operating point within one of the available combustion modes is selected that corresponds to one of the potential engine operating points having a lowest power loss based on the compared respective fuel and emissions losses. 1. Method for selecting an engine operating point in a multi-mode powertrain system employing a diesel engine and one or more non-combustion torque machines arranged to transfer torque to a driveline via a transmission device , the method comprising:monitoring a desired axle torque based on an operator torque request and vehicle speed;monitoring availability of a plurality of combustion modes of the diesel engine; receiving an engine torque range from a minimum engine torque to a maximum engine torque,', 'receiving an engine speed range from a minimum engine speed to a maximum engine speed,', 'retrieving a plurality of fuel losses, each fuel loss corresponding to respective ones of a plurality of engine operating points within the engine torque and speed ranges,', 'retrieving a plurality of emissions losses, each emissions loss corresponding to respective ones of the plurality of engine operating points within the engine torque and speed ranges, and, 'for each available combustion modeat each of a plurality of potential engine operating ...

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02-02-2017 дата публикации

Method And Apparatus For Operating A Combustion Machine

Номер: US20170030237A1
Автор: Delp Matthias
Принадлежит: Continental Automotive GmbH

The disclosure relates to internal combustion engines in general, and teaches various methods and apparatus for operating engines with an exhaust-gas turbocharger. Some embodiments include a method for operating an internal combustion engine having a fresh-gas tract for the supply of fresh gas to a cylinder, and an exhaust tract for the discharge of exhaust gas. They may include determining a value of a first operating condition of a catalytic converter arranged in the exhaust tract; determining a value of a second operating condition of the catalytic converter; calculating, as a function of the determined value, a first value for a maximum admissible scavenged-over quantity of fresh gas into the exhaust tract during scavenging operation; and setting the maximum admissible scavenged-over quantity to a second value lower than the first value if the value of the second operating condition reaches a predefined value. 1. A method for operating an internal combustion engine having a fresh-gas tract for the supply of fresh gas to a cylinder , and an exhaust tract for the discharge of exhaust gas , the method comprising:determining a value of a first operating condition of a catalytic converter arranged in the exhaust tract;determining a value of a second operating condition of the catalytic converter;calculating, as a function of the determined value, a first value for a maximum admissible scavenged-over quantity of fresh gas into the exhaust tract during scavenging operation; andsetting the maximum admissible scavenged-over quantity to a second value lower than the first value if the value of the second operating condition reaches a predefined value.2. The method as claimed in claim 1 , wherein determining the value of the first operating condition of the catalytic converter comprises modeling the value of the first operating condition.3. The method as claimed in claim 1 , wherein the first operating condition of the catalytic converter comprises a temperature gradient ...

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02-02-2017 дата публикации

ENHANCING CYLINDER DEACTIVATION BY ELECTRICALLY DRIVEN COMPRESSOR

Номер: US20170030257A1
Принадлежит:

An electrically driven compressor is used to supplement a turbocharger on an engine featuring cylinder deactivation to alleviate the shortcomings of a single turbocharger in order to extend the deactivated operating ranges. The electrically driven compressor is also operable to enhance transient boost development of a turbocharged engine. 1. A powertrain system , comprising:an internal combustion engine defining a plurality of cylinders;an exhaust system in communication with said plurality of cylinders;an intake system in communication with said plurality of cylinders;a turbocharger including a turbine in communication with the exhaust system and a compressor in communication with the intake system;an electrically driven compressor in communication with the intake system;a cylinder deactivation mechanism associated with at least one cylinder for deactivating the at least one cylinder; anda controller for controlling the electrically driven compressor in response to a deactivation of said at least one cylinder.2. The powertrain system according to claim 1 , further comprising an exhaust gas recirculation passage in communication between the exhaust system and the intake system.3. The powertrain system according to claim 1 , wherein the electrically driven compressor is upstream of the turbocharger compressor within the intake system.4. The powertrain system according to claim 1 , wherein the electrically driven compressor is downstream of the turbocharger compressor within the intake system.5. The powertrain system according to claim 1 , further comprising a bypass passage in the intake system and including a bypass valve controlled by the controller for bypassing the electrically driven compressor.6. A powertrain system claim 1 , comprising:an internal combustion engine defining a plurality of cylinders;an exhaust system in communication with said plurality of cylinders;an intake system in communication with said plurality of cylinders;an electrically driven ...

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02-02-2017 дата публикации

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

Номер: US20170030279A1
Принадлежит:

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

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02-02-2017 дата публикации

CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

Номер: US20170030284A1
Автор: Tanaka Satoru
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

Respective learned values of four parameters, that are an intake valve working angle deviation amount, an exhaust valve working angle deviation amount, an intake valve timing deviation amount and an exhaust pressure loss deviation amount, are calculated based on learned values of an intake valve flow rate error that are obtained under at least four different operating conditions. A correction amount with respect to an intake valve flow rate that is calculated with an intake valve model equation is calculated based on respective learned values of the four parameters using an intake valve flow rate error model equation in which coefficients are represented by functions of state quantities of an engine that include an engine speed and an intake pipe pressure. 1. A control device for an internal combustion engine equipped with an air flow sensor and an intake pipe pressure sensor that is configured to estimate an intake valve flow rate based on an estimated value or a measured value of an intake pipe pressure using an intake valve model equation in which an intake valve flow rate is represented by a linear expression that adopts an intake pipe pressure as a variable , the control device comprising:an error learning unit that is configured to learn, under at least four different operating conditions of the internal combustion engine, an intake valve flow rate error that is an error between a first intake valve flow rate obtained by inputting a measured value of an intake pipe pressure that is measured by the intake pipe pressure sensor into the intake valve model equation and a second intake valve flow rate that is calculated based on a measured value of a fresh air flow rate that is measured by the air flow sensor;a parameter learned value calculating unit that is configured to use an intake valve flow rate error model equation in which the intake valve flow rate error is represented by a polynomial expression comprising a first order term of a first parameter that is ...

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17-02-2022 дата публикации

METHODS AND SYSTEM FOR STOPPING AN ENGINE

Номер: US20220049666A1
Принадлежит:

Systems and methods for stopping and starting a direct injection engine are described. In one example, the air is injected into one or more pre-chambers of engine cylinders to adjust engine pumping torque during an engine stop so that the engine may stop at a crankshaft position that facilitates direct engine starting. 1. An engine operating method , comprising:injecting air into a pre-chamber of a cylinder and into the cylinder via the pre-chamber in response to an engine stop request, where injecting air into the pre-chamber includes adjusting an amount of air injected to the cylinder based on stopping an engine at a crankshaft position that facilitates a rocking direct engine start, wherein the crankshaft position is less than 90 crankshaft degrees of top-dead-center of a compression stroke of the cylinder.2. The method of claim 1 , wherein the cylinder is one of a plurality of cylinders claim 1 , wherein each cylinder of the plurality of cylinders has a respective pre-chamber.3. The method of claim 2 , wherein air is injected into the respective pre-chamber of at least one cylinder of the plurality of cylinders over a plurality of engine cycles.4. The method of claim 2 , wherein air is injected into a plurality of the respective pre-chambers claim 2 , and wherein an amount of air injected into each of the respective pre-chambers is a same or different amount.5. The method of claim 4 , wherein a same or different amount of air is injected into the respective pre-chambers each engine cycle.6. The method of claim 1 , wherein the air is injected when an engine speed is below a threshold speed.7. The method of claim 6 , wherein an exhaust valve is not deactivated.8. The method of claim 1 , wherein the crankshaft position is less than 45 crankshaft degrees of top-dead-center of the compression stroke of the cylinder.9. The method of claim 1 , where the rocking direct engine start includes initiating combustion in a cylinder of the engine that is not rotating.10. A ...

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31-01-2019 дата публикации

SYSTEMS AND METHODS FOR A SPLIT EXHAUST ENGINE SYSTEM

Номер: US20190032579A1
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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30-01-2020 дата публикации

Control system for compression ignition engine

Номер: US20200032717A1
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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30-01-2020 дата публикации

Method for controlling and/or regulating the operation of an internal combustion engine

Номер: US20200032719A1
Автор: Tim Thaler
Принадлежит: VOLKSWAGEN AG

A method for controlling and/or regulating the operation of an internal combustion engine, wherein the relevant specific relative locations of the intake camshaft with respect to the crankshaft are defined and/or controlled with the aid of regulating control values of the engine control unit, in particular for controlling the intake valves between the control value 1 for late and the control value 0 for early, and wherein a specific regulating control value curve and/or specific regulating control values for controlling the relative position of the intake camshaft is or are stored, at least for a specific control period for implementing the load jump, namely at least between the time of the start of the target load jump to the time of the end of the actual load jump corresponding to the target load jump.

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30-01-2020 дата публикации

Control system

Номер: US20200032727A1
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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05-02-2015 дата публикации

DIAGNOSTIC SYSTEM AND DIAGNOSTIC METHOD FOR INTERNAL COMBUSTION ENGINE

Номер: US20150039209A1
Автор: Hayashi Kota, Yui Takashi
Принадлежит:

An internal combustion engine includes a variable mechanism that changes a working angle of an intake valve. A controller diagnoses whether there is an abnormality that an intake air amount reduces during idle operation. The controller changes an abnormality determination threshold for diagnosing an abnormality on the basis of a mode in which the working angle is changed by the variable mechanism. 1. A diagnostic system for an internal combustion engine including a variable mechanism that changes a working angle of an intake valve , the diagnostic system comprising:a controller configured to:(i) diagnose an abnormality that an intake air amount reduces, when an index value of the intake air amount becomes smaller than an abnormality determination threshold during idle operation; and(ii) change the abnormality determination threshold on the basis of a mode in which the working angle is changed by the variable mechanism.2. The diagnostic system according to claim 1 , whereinthe controller is configured to diagnose the abnormality that the intake air amount reduces, when an accumulated value of the intake air amount is smaller than the abnormality determination threshold.3. The diagnostic system according to claim 2 , whereinthe controller is configured to reduce the abnormality determination threshold when the working angle of the intake valve is narrowed by the variable mechanism as compared to when the working angle is not narrowed.4. The diagnostic system according to claim 2 , whereinthe controller is configured to reduce the abnormality determination threshold as the working angle of the intake valve is narrowed by the variable mechanism.5. The diagnostic system according to claim 1 , whereinthe controller is configured to diagnose whether there is the abnormality that the intake air amount reduces, when catalyst early warm-up control for retarding ignition timing and controlling an opening degree of a throttle valve such that an idle rotation speed is kept is ...

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12-02-2015 дата публикации

Six-stroke cycle engine having scavenging stroke

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

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

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11-02-2016 дата публикации

DEDICATED-EGR CYLINDER WITH VARIABLE CHARGE MOTION

Номер: US20160040589A1
Принадлежит:

Methods and systems are provided for adjusting charge motion control devices coupled to a series of cylinders organized into cylinder groups, one of the cylinder groups including a dedicated EGR cylinder group wherein the cylinders are the only engine cylinder routing exhaust to an engine intake. In one example, a first cylinder group may be a dedicated cylinder group recirculating exhaust to the intake manifold while a second cylinder group may be a non-dedicated cylinder group routing exhaust to a turbine. A method may include adjusting a first charge motion control device coupled to the first cylinder group and a second charge motion control device coupled to the second cylinder group to vary a charge motion level between the first and second cylinder groups. 1. A method for an engine , comprising:adjusting each of a first charge motion control device coupled to a first cylinder group and a second charge motion control device coupled to a second cylinder group to vary a charge motion level between the first and second cylinder groups while recirculating exhaust from only the second cylinder group to an intake manifold.2. The method of claim 1 , wherein adjusting each of the first charge motion control device and the second charge motion control device to vary the charge motion level between the first and second cylinder groups includes adjusting the first and second charge motion control devices together with a single common actuator claim 1 , the first and second charge motion control devices linked and offset from one another by a set offset resulting in a constant difference in the charge motion level between the first and second cylinder groups.3. The method of claim 2 , wherein the charge motion level of the first cylinder group is less than the charge motion level of the second cylinder group.4. The method of claim 2 , wherein the first and second charge motion control devices are coupled to the single common actuator on a common shaft claim 2 , the first ...

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09-02-2017 дата публикации

METHODS AND SYSTEMS FOR BOOST CONTROL

Номер: US20170037786A1
Принадлежит:

Methods and systems are provided for mitigating excessive exhaust pressures in an engine. In one example, a method may include adjusting an intake throttle responsive to exhaust pressure upstream of an exhaust turbine being higher than a threshold without reducing boost level. In this way, boost pressures may be maintained while reducing exhaust pressures. 1. A method for an engine , comprising:adjusting an intake throttle responsive to pre-turbine exhaust pressure greater than a threshold without reducing boost level and while maintaining valve timing.2. The method of claim 1 , wherein the pre-turbine exhaust pressure is a predicted pressure.3. The method of claim 2 , wherein the pre-turbine exhaust pressure is modeled based on a post-turbine exhaust manifold pressure.4. The method of claim 3 , wherein the engine includes a soot filter coupled downstream of a turbocharger turbine claim 3 , and wherein the pre-turbine exhaust pressure is further modeled based on soot load of the soot filter and the boost level.5. The method of claim 4 , wherein the pre-turbine exhaust pressure is further modeled based on one or more of engine air flow claim 4 , exhaust flow claim 4 , spark timing claim 4 , air-fuel ratio claim 4 , cam timing claim 4 , manifold temperature claim 4 , vehicle speed claim 4 , and manifold pressure.6. The method of claim 3 , wherein the post-turbine exhaust manifold pressure is estimated by an exhaust pressure sensor.7. The method of claim 1 , wherein the adjusting includes reducing an opening of the intake throttle until the pre-turbine exhaust pressure is below the threshold claim 1 , the threshold based on a pressure required to force open a closed exhaust valve.8. The method of claim 7 , wherein the adjusting includes reducing an opening of the intake throttle for a threshold duration claim 7 , and responsive to the pre-turbine exhaust pressure remaining greater than the threshold after the threshold duration claim 7 , reducing boost level by ...

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08-02-2018 дата публикации

VARIABLE-SPEED SUPERCHARGER FOR HIGHLY DILUTED INTERNAL COMBUSTION ENGINES

Номер: US20180038293A1
Принадлежит:

An engine control system includes an internal combustion engine including a plurality of cylinders. An intake manifold is connected to the internal combustion engine. An exhaust manifold is connected to the internal combustion engine. A supercharger is connected to an air intake passage and the intake manifold and includes a variable speed drive. A throttle valve is disposed in the air intake passage. An exhaust passage is in connection with the exhaust manifold. A passive selective catalytic reduction catalyst system is in communication with the exhaust passage. An exhaust gas recirculation passage is in communication with the exhaust passage and the air intake passage and includes an exhaust gas recirculation valve. A controller controls the variable speed drive of the supercharger and the throttle valve and the exhaust gas recirculation valve based upon engine conditions. 1. An engine control system , comprising:an internal combustion engine including a plurality of cylinders;an intake manifold connected to the internal combustion engine;an exhaust manifold connected to the internal combustion engine;a supercharger connected to an air intake passage and the intake manifold and including a variable speed drive;a throttle valve disposed in the air intake passage;an exhaust passage in connection with the exhaust manifold;an after-treatment system in communication with the exhaust passage;an exhaust gas recirculation passage in communication with the exhaust passage and the air intake passage and including an exhaust gas recirculation valve; anda controller for controlling the variable speed drive of the supercharger and the throttle valve and the exhaust gas recirculation valve based upon engine conditions.2. The engine control system according to claim 1 , further comprising a passive selective catalytic reduction catalyst system as part of the after-treatment system.3. The engine control system according to claim 2 , wherein the controller slows the variable speed ...

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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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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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07-02-2019 дата публикации

IN-CYLINDER EGR AND VVA FOR AFTERTREATMENT TEMPERATURE CONTROL

Номер: US20190040826A1
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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06-02-2020 дата публикации

Electrically Latching Rocker Arm Assembly Having Built-In OBD Functionality

Номер: US20200040776A1
Принадлежит: Eaton Intelligent Power Limited

An internal combustion engine includes a cam-actuated rocker arm assembly with a solenoid-actuated latch that provides for cylinder deactivation or variable valve actuation. The solenoid is in a position where its inductance varies significantly in relation to the position of a latch pin as it translates between latching and non-latching configurations. A sensor is positioned to monitor a current or a voltage in a circuit that includes the solenoid. The sensor data is analyzed to provide diagnostic information relating to the operation of the rocker arm assembly. 1. A method of providing diagnostic information for a rocker arm assembly , the method comprising:providing the rocker arm assembly with a latch pin that translates between a first position and a second position and a solenoid operative to actuate the latch pin, wherein the solenoid has an electrical response characteristic that varies with latch pin position as the latch pin translates between the first position and the second position;driving the circuit over a first interval;measuring a current in the circuit during the first interval to obtain a first data set;driving the circuit over a second interval;measuring a current in the circuit during the second interval to obtain a second data set;comparing the first data set to the second data set to obtain diagnostic information relating to location or movement of the latch pin.2. The method of claim 1 , driving the circuit over the first interval comprises providing the circuit with a DC voltage pulse predetermined to be sufficient to actuate the latch pin from the first position to the second position.3. The method of claim 1 , whereindriving the circuit over the first interval comprises providing a first DC voltage pulse to the circuit; anddriving the circuit over the second interval comprises providing a second voltage DC pulse to the circuit.4. The method of claim 3 , further comprising:between the first interval and the second interval driving the ...

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