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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 6493. Отображено 100.
16-02-2012 дата публикации

Method and apparatus for engine control module wake-up test

Номер: US20120041631A1
Автор: Paul William Rasmussen, Robert Jackson, Wenbo Wang, William R. Cadman
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A fuel system diagnostic wakeup system for a vehicle includes a first control module. The first control module generates a wakeup request, powers off when the vehicle powers off, and powers on and performs a fuel system diagnostic in response to a wakeup signal while the vehicle is powered off. A second control module independent of the first control module receives the wakeup request and generates the wakeup signal after the vehicle powers off based on the wakeup request.

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Номер записи: 1
23-02-2012 дата публикации

System and Methods for Skip Fire Engine with a Lean NOx Trap

Номер: US20120042633A1
Автор: Adya S. Tripathi, Chester J. Silvestri
Принадлежит: Tula Technology Inc

Systems and methods for skip fire spark ignition engine operation with a lean NOx trap after-treatment are provided. This system includes engine control circuitry capable of fueling and firing subsets of the engine's cylinders. Other cylinders are not provided fuel and are not fired (i.e. “skip fired”). The system includes an exhaust manifold for channeling the exhaust from at least some cylinders through a multistage catalytic converter. This may include a standard two-way or three-way catalytic converter. From the catalytic converter the exhaust may be channeled through a lean NOx trap. The lean NOx trap is able to chemically absorb the NOx emissions for regeneration according to a regeneration protocol. Lean NOx traps may include a substrate, an absorption material (also referred to as a ‘sorbent’) and a catalyst. The regeneration protocol may include monitoring NOx emissions downstream from the lean NOx trap, and comparing them against either a threshold or a lean NOx trap saturation model. Once the NOx emissions reach the threshold, or deviate from the model, a regeneration cycle may be performed.

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Номер записи: 2
05-07-2012 дата публикации

Methods and apparatus to disrupt the engine of a vehicle

Номер: US20120173120A1
Автор: Jack E. White, Steven L. Kaufman, Vincent C. Hougo
Принадлежит: Raytheon Co

Methods and apparatus to transmit a range of frequencies targeting a vehicle, monitoring performance of an engine of the vehicle, determining a first frequency in the range of frequencies that disrupts operation of the engine, and dwelling on the first frequency to disrupt the engine, reducing power and continuing to dwell at the first frequency to maintain disruption of the engine.

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Номер записи: 3
04-10-2012 дата публикации

System and method for cam phaser control in an engine

Номер: US20120247411A1
Автор: Etsuko Muraji Stewart, James R. Yurgil
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A control system for an engine includes a position determination module and a position control module. The position determination module determines a first cam phaser position for starting the engine prior to engine shut down, and determines a second cam phaser position for starting the engine while the engine is shut down. The position control module adjusts a cam phaser to the first cam phaser position at engine shut down. The position control module adjusts the cam phaser from the first cam phaser position to the second cam phaser at engine start up when a difference between the first cam phaser position and the second cam phaser position is greater than a predetermined difference. A method for controlling an engine is also provided.

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Номер записи: 4
13-12-2012 дата публикации

Variable Geometry Cam Shafts For Multiple-Cylinder Internal Combustion Engines

Номер: US20120312263A1
Автор: Francisco A. Arrieta
Принадлежит: Individual

A method of conserving fuel in the operation of multi-cylinder internal combustion engines. The present method described here allows a portion of the cylinders of an internal combustion engine to be de-activated when less power is required, thus allowing the engine to provide full power when required, or less power with substantial fuel savings. The present method does so by altering the normal operation of intake and exhaust valves by leaving the intake valve at least partially closed, and the exhaust valve at least partially open. The present method overcomes numerous problems in the prior art, such as excess load placed on the engine caused by trapped gases, damaging thermal gradients across the engine block, and difficulty of retrofitting existing engines.

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Номер записи: 5
03-01-2013 дата публикации

Skip fire fuel injection system and method

Номер: US20130006497A1
Автор: Brad Silvers, Reddy POCHA SIVA SANKARA
Принадлежит: Electro Motive Diesel Inc

A system is disclosed for controlling fuel injectors in an internal combustion engine having a plurality of individual engine cylinders with associated pistons. The system includes at least one electronic engine control module configured to control the fuel injectors and having a memory with predetermined injector firing patterns stored therein. The firing patterns specify the fuel injectors to be fired and the fuel injectors to be skipped, in an engine cycle under conditions of reduced power demand. For each engine cycle in a succession of cycles under the reduced power demand condition, the engine control module determines the number of fuel injectors to be fired based upon the reduced power demand data, selects from the stored predetermined firing patterns a firing pattern specifying the injectors to be fired and the injectors to be skipped, and orders the specified fuel injectors to be fired sequentially in accordance with the selected predetermined firing pattern.

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Номер записи: 6
07-03-2013 дата публикации

Engine control unit, engine control system and engine control method

Номер: US20130060455A1
Автор: Shinji Kawasumi
Принадлежит: Shindengen Electric Manufacturing Co Ltd

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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Номер записи: 7
04-04-2013 дата публикации

Structure for preventing surge of 2-cylinder engine

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

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

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Номер записи: 8
02-05-2013 дата публикации

System and method for controlling an exhaust brake of a vehicle

Номер: US20130104841A1
Автор: Jong Yun Jeong
Принадлежит: Hyundai Motor Co

A system and method for controlling an exhaust brake of a vehicle may measure rotation speed (RPM) of an engine, transmit the rotation speed of the engine to a control unit, determine an opening of a valve which opens/closes an exhaust pipe of the engine in the control unit based on the rotation speed of the engine to maintain the back pressure of exhaust gas generated by the exhaust brake to be constant, and control the valve according to the valve opening determined by the control unit.

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Номер записи: 9
16-05-2013 дата публикации

SKIP FIRE ENGINE CONTROL

Номер: US20130118443A1
Автор: CHANDLER Christopher W., PIRJABERI Mohammad R., Switkes Joshua P., TRIPATHI Adya S.
Принадлежит: TULA TECHNOLOGY, INC.

A variety of skip fire engine controllers and control techniques are described. In some preferred embodiments, a skip fire engine controller is provided that includes a firing fraction calculator, an engine settings controller, a firing fraction adjuster and a firing controller. The firing fraction calculator determines a reference firing fraction indicative of a firing fraction suitable for delivering a desired engine output at a reference working chamber firing output. The engine settings controller is arranged to set selected engine settings. The firing fraction adjuster determines an adjusted firing fraction that scales the reference firing fraction appropriately such that the engine will deliver the desired engine output at the current engine settings even when the actual working chamber firing outputs do not equal the reference working chamber firing output. The firing controller direct workings chamber firings in a skip fire manner that delivers the adjusted firing fraction. 1. An engine controller arranged to control working chamber firings in an engine , the engine controller comprising:a firing fraction calculator arranged to determine a reference firing fraction suitable for delivering a desired engine output at a reference working chamber firing output;an engine settings controller arranged to set selected engine settings, wherein the selected engine settings affect the output of the working chamber firings and are not constrained to cause actual working chamber firing outputs to equal the reference working chamber firing output;a firing fraction adjuster arranged to determine an adjusted firing fraction that scales the reference firing fraction appropriately such that the engine will deliver the desired engine output at the current engine settings even when the actual working chamber firing outputs do not equal the reference working chamber firing output; anda firing controller arranged to direct working chamber firings in a skip fire manner that ...

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Номер записи: 10
06-06-2013 дата публикации

Method and system for pre-ignition control

Номер: US20130139786A1
Автор: Chris Paul Glugla, Paul Charles Mingo, Robert Sarow Baskins, Sue Kay Wagers
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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Номер записи: 11
06-06-2013 дата публикации

Low pressure fuel pump control method of gdi engine

Номер: US20130144507A1
Автор: Bum Ky Lee
Принадлежит: Hyundai Motor Co, Kia Motors Corp

A low pressure fuel pump controlling method for a fuel feeding system of a GDI engine that includes a low pressure system and a high pressure system including controlling the low pressure fuel pump against various problems that may occur during the driving of the engine by variable control of the low pressure fuel pump of the low pressure system for the improvement of fuel efficiency of a vehicle. In various situations, the method drives the low pressure fuel pump under a relatively higher pressure than the fuel efficiency pressure.

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Номер записи: 12
20-06-2013 дата публикации

Vehicle Control System

Номер: US20130152897A1
Автор: Kotwicki Allan J., Russell John David, Rutkowski Brian D.
Принадлежит: FORD GLOBAL TECHNOLOGIES, LLC

A method is provided for controlling an engine via an outlet control device of an intake manifold, such as via variable valve lift operation. The engine may further include an inlet control device, such as an electronic throttle, as well as coordination between the inlet and outlet control devices for controlling airflow in the engine. 1. A method for controlling an engine having an intake manifold and an outlet control device coupled to the manifold for controlling flow exiting the manifold and entering at least one cylinder of the engine, the engine further having an inlet control device for controlling flow entering the manifold, the method comprising: determining a driver torque command; calculating a desired cylinder charge based on said driver torque command; and adjusting the outlet control device to provide said desired cylinder charge. The present application is a continuation of U.S. patent application Ser. No. 13/595,858 filed Aug. 27, 2012, now U.S. Pat. No. 8,371,264, which is a divisional of U.S. patent application Ser. No. 12/765,722 filed Apr. 22, 2010, now U.S. Pat. No. 8,251,044, which is a continuation of U.S. patent application Ser. No. 12/116,184, filed on May 6, 2008, now U.S. Pat. No. 7,703,439, which is a divisional of U.S. patent application Ser. No. 11/867,143, filed on Oct. 4, 2007, now U.S. Pat. No. 7,398,762, which is a divisional of U.S. patent application Ser. No. 10/022,800 filed on Dec. 18, 2001, now U.S. Pat. No. 7,290,527 which is related to the following co-pending patent applications and issued U.S. Patent No's, all assigned to the same assignee as the present application, the entire subject matter thereof being incorporated herein by reference:application Ser. No. 09/420,322 filed Oct. 18, 1999, inventors John D. Russell et al.application Ser. No. 09/420,323 filed Oct. 18, 1999, inventors John D. Russell et al.application Ser. No. 09/420,451 filed Oct. 18, 1999, inventors John D. Russell et al.application Ser. No. 09/420,447 ...

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Номер записи: 13
27-06-2013 дата публикации

CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

Номер: US20130166185A1
Автор: Ando Daigo
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A control device for an internal combustion engine includes: a variable valve timing mechanism that changes a valve timing by pressure of hydraulic fluid; and a control unit that controls a change of the valve timing. The control unit sets an engine stop request-time target valve timing that is a target valve timing at the time when a request for an engine stop is issued, starts control for changing the valve timing such that the valve timing coincides with the engine stop request-time target valve timing and causes the internal combustion engine to operate at an idle at the time when the request for the engine stop is issued, starts a process of stopping the operation of the internal combustion engine at the time when the valve timing has reached a predetermined valve timing, and sets the predetermined valve timing on the basis of a temperature of the hydraulic fluid. 1. A control device for an internal combustion engine that includes a variable valve timing mechanism that changes a valve timing by pressure of hydraulic fluid , the control device comprising:a control unit that controls a change of the valve timing, whereinthe control unit sets an engine stop request-time target valve timing that is a target valve timing at the time when a request for an engine stop that is a stop of operation of the internal combustion engine is issued,at the time when the request for the engine stop is issued, the control unit starts control for changing the valve timing such that the valve timing coincides with the engine stop request-time target valve timing and causes the internal combustion engine to operate at an idle,the control unit starts a process of stopping the operation of the internal combustion engine at the time when the valve timing has reached a predetermined valve timing, and the control unit sets the predetermined valve timing on the basis of a temperature of the hydraulic fluid.2. The control device according to claim 1 , whereinthe control unit sets the ...

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Номер записи: 14
18-07-2013 дата публикации

METHOD OF CONTROLLING ENGINE SHUT DOWN

Номер: US20130184975A1
Автор: Rowells Robert L., Wu Shouhao
Принадлежит: International Engine Intellectual Property Company LLC

A method of shutting down an engine determines whether an ignition key is in a first shutdown position. An exhaust gas recirculation valve closes when the ignition key is in the first shutdown position. The engine runs for a predetermined period of time after the exhaust gas recirculation valve is closed. The engine shuts down after running the engine for the predetermined period of time. 1. A method of shutting down an engine comprising:determining whether an ignition key is in a first shutdown position;closing an exhaust gas recirculation valve when the ignition key is in a first shutdown position;running the engine for a predetermined period of time after the exhaust gas recirculation valve is closed; andshutting down the engine after running the engine for the predetermined period of time.2. The method of further comprising:determining whether the ignition key is in a second shutdown position; andshutting down the engine generally simultaneously to determining that the ignition key is in the second shutdown position.3. The method of claim 1 , wherein the predetermined period of time is from about 10 seconds to about 30 seconds.4. The method of claim 1 , wherein the running the engine for a predetermined time is at an engine idle speed.5. The method of claim 1 , wherein the predetermined period of time is based upon atmospheric conditions.6. The method of claim 1 , wherein the predetermined period of time is based upon an intake manifold temperature of the engine.7. The method of claim 1 , wherein the predetermined period of time is stored in a look table of a memory disposed in electronic communication with an electronic control module of the engine.8. A method of shutting down an engine comprising:determining whether an ignition key is in a first shutdown position;closing an exhaust gas recirculation valve when the ignition key is in a first shutdown position;increasing engine speed to a predetermined speed higher than idle;running the engine for a ...

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Номер записи: 15
01-08-2013 дата публикации

Control apparatus for general purpose engine

Номер: US20130197784A1
Автор: Ryo Sakaguchi, Yasuhiko Ishida
Принадлежит: Mitsubishi Electric Corp

A general purpose engine control apparatus can detect misfire occurrence with high accuracy, while reducing adaptation man hours of misfire determination. The apparatus includes a first air/fuel ratio determiner to make a rich/lean determination, an injection amount corrector to calculate a corrected injection amount corresponding to a stoichiometric air/fuel ratio, an injection controller to supply fuel to the engine so as to match the corrected injection amount, a second air/fuel ratio determiner to make a rich/lean determination based on a comparison of the O2 sensor output with a rich and a lean determination voltage, a rich/lean period calculator to calculate a rich/lean period according to the determination of the second air/fuel ratio determiner, and a misfire determiner to determine the presence or absence of a misfire based on the rich/lean period. The injection controller stops fuel injection to the engine in the presence of a misfire.

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Номер записи: 16
29-08-2013 дата публикации

ENGINE CONTROL APPARATUS

Номер: US20130220272A1
Автор: Hisaminato Naoto, Kamiyama Eiichi, Tateno Manabu
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

An ECU A is associated with an engine provided with a VVT capable of independently setting a phase of an intake valve A and a phase of an intake valve B of two intake valves mounted for a combustion chamber E. The ECU A includes a controller control the VVT based on a magnitude of engine brake required to the engine to vary a phase of at least one of the intake valves A and B. 1. An engine control apparatus provided in an engine provided with a valve drive device capable of independently setting a phase of one intake valve and a phase of another intake valve of plural intake valves mounted for a combustion chamber , the engine control apparatus comprisinga controller controlling the valve drive device based on a magnitude of engine brake required to the engine to vary at least one of the phase of the one intake valve and the phase of the another intake valve.2. The engine control apparatus of claim 1 , wherein the controller at least partially advances the phase of the one intake valve to a larger extent as the magnitude of the engine brake required to the engine is smaller.3. The engine control apparatus of claim 1 , wherein the controller at least partially advances the phase of the another intake valve to a larger extent as the magnitude of the engine brake required to the engine is smaller.4. The engine control apparatus of claim 1 , wherein when the magnitude of the engine brake required to the engine is smaller than a first predetermined value claim 1 , the controller advances at least one of the phase of the one intake valve and the phase of the another intake valve claim 1 , as compared with when the magnitude of the engine brake required to the engine is larger than the first predetermined value.5. The engine control apparatus of claim 4 , whereinwhen the magnitude of the engine brake required to the engine is smaller than the first predetermined value, the controller advances the phase of the one intake valve and the phase of the another intake valve, ...

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Номер записи: 17
12-09-2013 дата публикации

ENGINE CONTROL APPARATUS

Номер: US20130238225A1
Автор: Morita Tetsuo
Принадлежит: Denso Corporation

An engine control apparatus is provided for controlling an engine of a motor vehicle. The engine control apparatus is configured to automatically stop the engine by stopping combustion in the engine when a predetermined automatic stop condition is satisfied and restart the engine by driving a starter when a predetermined restart condition is satisfied. The engine control apparatus includes a calculator and a condition changer. The calculator calculates an accumulated value by accumulating a starter deterioration-related value each time the engine is started or restarted by the starter; the accumulated value is indicative of the degree of deterioration of the starter. The condition changer changes, when the accumulated value has increased to reach a threshold value, the predetermined automatic stop condition so as to lower the frequency of the engine being automatically stopped and restarted and thereby suppress deterioration of the starter. 1. An engine control apparatus for controlling an engine of a motor vehicle , the engine control apparatus being configured to automatically stop the engine by stopping combustion in the engine when a predetermined automatic stop condition is satisfied and restart the engine by driving a starter when a predetermined restart condition is satisfied , the engine control apparatus comprising:a calculator that calculates an accumulated value by accumulating a starter deterioration-related value each time the engine is started or restarted by the starter, the accumulated value being indicative of the degree of deterioration of the starter; anda condition changer that changes, when the accumulated value has increased to reach a threshold value, the predetermined automatic stop condition so as to lower the frequency of the engine being automatically stopped and restarted and thereby suppress deterioration of the starter.2. The engine control apparatus as set forth in claim 1 , wherein the predetermined automatic stop condition includes ...

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Номер записи: 18
03-10-2013 дата публикации

Method And Device For Controlling The Engine Braking Operation In Internal Combustion Engines

Номер: US20130255624A1
Автор: CHAVES Rodrigo, Gohm Lukas, Raab Gottfried, Raup Markus
Принадлежит:

A method and a device for controlling the engine braking operation in internal combustion engines for motor vehicles, wherein the internal combustion engine is operated with direct injection of fuel and a controllable brake flap is provided in the exhaust gas system for retaining exhaust gases in the engine braking operation, and moreover has an exhaust gas recirculation device having an EGR valve that is arranged upstream of the brake flap and a recirculation line that connects the exhaust gas system to the intake system of the internal combustion engine and during the driving operation controls a defined quantity of recirculated exhaust gas with respect to the combustion air. To avoid critical excessive temperatures at the injection valves, in the engine braking operation (MB), the EGR valve () is more or less opened in dependence upon operating parameters (n, T) of the internal combustion engine (). 1. A method of controlling the engine braking operation in internal combustion engines for motor vehicles , wherein the internal combustion engine is operated with direct injection of the fuel and a controllable brake flap is provided in the exhaust gas system in order to retain the exhaust gases in the engine braking operation , and has an exhaust gas recirculation device having an exhaust gas recirculation (EGR) valve arranged upstream of the brake flap and a recirculation line that connects the exhaust gas system to the intake system of the internal combustion engine and during the driving operation controls a defined quantity of recirculated exhaust gas with respect to the combustion air , said method comprising the steps of: in the engine braking operation , opening the EGR valve in dependence upon at least one predetermined operating parameter of the internal combustion engine so that the degree of opening of the EGR valve is predetermined in dependence upon one of the current sensed and determined value of the at least one operating parameter in the engine ...

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Номер записи: 19
03-10-2013 дата публикации

CONTROL OF A PARTIAL CYLINDER DEACTIVATION ENGINE

Номер: US20130255626A1
Автор: SERRANO Louis J.
Принадлежит: TULA TECHNOLOGY, INC.

A variety of methods and arrangements for managing transitions between operating states for an engine are described. In one aspect, an engine is operated in a particular operating state. A transition is made to another operating state. During that transition, the engine is operated in a skip fire manner. 1. A method for managing transitions between operational states of an internal combustion engine having a plurality of working chambers , the method comprising:operating the engine in one of a first operational state and a second operational state wherein the first and second operational states involve different numbers of operating working chambers;making a transition between the first operational state and a second operational state for the engine; andoperating the engine in a skip fire manner during the transition.2. A method as recited in wherein the first and second operational states each involve different claim 1 , predetermined numbers of non-deactivatable working chambers that are fired at every engine cycle during a particular operational state.3. A method as recited in wherein for each operational state claim 2 , the other working chambers are deactivatable such that they can fired during some working cycles and skipped during other working cycles.4. A method as recited in wherein operating the engine in a skip fire manner involves deactivating at least one selected working cycle of at least one selected working chamber and firing at least one selected working cycle of at least one selected working chamber wherein individual working chambers are sometimes deactivated and sometimes fired.5. A method as recited in wherein the operating of the engine in a skip fire manner further comprises:generating a firing sequence that includes one or more firing and skip commands for operating the working chambers of the engine;determining which working chamber a particular skip command would be applied to;if the skip command involves a deactivatable working chamber, ...

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Номер записи: 20
03-10-2013 дата публикации

Control apparatus for internal combustion engine

Номер: US20130255630A1
Автор: Hiroshi Tanaka, Koji Aso
Принадлежит: Toyota Motor Corp

A control apparatus for an internal combustion engine that can suppress the emission of unburned HC accompanying start-up of an internal combustion engine. The control apparatus including a fuel supply control unit that initially supplies fuel to only some cylinders, and delays the start of fuel supply to delayed cylinders that are cylinders other than the aforementioned cylinders; an engine discharge gas HC amount predicting unit that calculates a relationship between a delayed cylinder starting engine speed that is a engine speed at a timing at which a cycle starts in which a delayed cylinder initially carries out combustion and a predicted value of an engine discharge gas HC amount; and a target engine speed calculating unit that calculates a target engine speed that is a target value of the delayed cylinder starting engine speed.

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Номер записи: 21
17-10-2013 дата публикации

FOUR-STROKE INTERNAL COMBUSTION ENGINE COMPRISING AN ENGINE BRAKE

Номер: US20130269652A1
Автор: Gröger Michael, Toth Gyula
Принадлежит: AVL List GmbH

A four-stroke internal combustion engine having an engine brake, at least one exhaust valve per cylinder, each valve actuated by a camshaft and at least one first valve lever arrangement, and a device which advances the exhaust control, with the valve lever arrangement having an exhaust lever actuated by an exhaust cam and a brake lever actuated by a brake cam. The brake lever has a first brake lever part on the side of the camshaft and a second brake lever part on the side of the exhaust valve, with the two brake lever parts being rotatably mounted independent of each other about a lever axis and being rotationally connectable with each other in engine braking operation by a locking element which is adjustable between two positions. 111-. (canceled)12. An internal combustion engine , comprising:an engine brake;at least one exhaust valve per cylinder;a camshaft;at least one valve lever arrangement configured to actuate the at least one exhaust valve via the camshaft, the valve lever arrangement having an exhaust lever and a brake lever, the exhaust lever having a first exhaust lever part on a camshaft side and a second exhaust lever part on an exhaust valve side, the first exhaust lever part and the second exhaust lever part each configured for rotatable mounting about a lever axis independent of each other and also for rotational connection to each other by a locking element outside of an engine braking operation, the brake lever having a first brake lever part on the camshaft side and a second brake lever part on the exhaust valve side, the first brake lever part and the second brake lever part each configured for rotatable mounting about the lever axis independent of each other and also for rotational connection to each other in the engine braking operation by the locking element;an exhaust cam configured to actuate the exhaust lever; anda brake cam configured to actuate the brake lever.13. The internal combustion engine of claim 12 , wherein the locking element ...

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Номер записи: 22
17-10-2013 дата публикации

AUXILIARY VALVE ACTUATING MECHANISM OF ENGINE

Номер: US20130269653A1
Автор: Yang Zhou
Принадлежит: Shanghai Universoon Auto Parts Co., Ltd.

An auxiliary valve actuating mechanism of an engine includes a first valve actuating mechanism and an auxiliary valve actuating mechanism. The auxiliary valve actuating mechanism comprises an auxiliary cam, an auxiliary rocker-arm shaft, an auxiliary rocker arm, an eccentric rocker arm bushing and a bushing actuation device. One end of the auxiliary rocker arm constitutes a motion pair with the auxiliary cam and the other end is above the valve. The bushing actuation device actuates the eccentric rocker arm bushing to rotate between an operating position and a non-operating position. 1. An engine auxiliary valve actuation mechanism for producing an auxiliary valve event for an engine comprising a first valve actuation mechanism including a first cam , a first rocker arm shaft , a first rocker arm and a valve , a motion from a first cam being transmitted to the valve through a first rocker arm to generate a normal engine valve event , wherein the auxiliary valve actuation mechanism comprises:an auxiliary cam;an auxiliary rocker arm shaft;an auxiliary rocker arm;an eccentric rocker arm bushing; anda bushing actuation device,wherein the eccentric rocker arm bushing is disposed in an axial hole in the auxiliary rocker arm, the auxiliary rocker arm shaft is disposed in the eccentric rocker arm bushing with the auxiliary rocker arm shaft and the eccentric rocker arm bushing having offset axial centerlines with one end of the auxiliary rocker arm and the auxiliary cam being connected to form a kinematic pair and the other end of the auxiliary rocker arm being located above the valve,wherein the bushing actuation device drives the eccentric rocker arm bushing to rotate between a non-operating position and an operating position, whereupon in the non-operating position, a rocking centerline of the auxiliary rocker arm is displaced away from the valve, and the auxiliary rocker arm is separated from the valve; and in the operating position, the rocking centerline of the ...

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Номер записи: 23
24-10-2013 дата публикации

Internal combustion engine with partial deactivation and method for the operation of an internal combustion engine of said type

Номер: US20130276747A1
Автор: Albert Breuer, Helmut Hans Ruhland, Jan Linsel, Moritz Klaus Springer, Thomas Lorenz
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

A system is provided for an internal combustion engine comprising, at least two cylinders wherein the at least two cylinders form at least two groups, wherein each group comprises at least one cylinder, the at least one cylinder of at least one group being formed as a cylinder which can be activated in a load-dependent manner and which is deactivated if a predefined load is undershot. The at least two groups are characterized by different cylinder volumes, the at least one cylinder of a first group having a lesser cylinder volume and the at least one cylinder of a second group having a greater cylinder volume; and the at least one cylinder of the second group comprises an activatable and deactivatable cylinder. Use of the first cylinder group, and deactivation of the second cylinder group during partial loads increases engine efficiency and fuel economy.

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Номер записи: 24
24-10-2013 дата публикации

Auto-ignition internal combustion engine with partial deactivation and method for the operation of an internal combustion engine of said type

Номер: US20130276749A1
Автор: Albert Breuer, Helmut Hans Ruhland, Jan Linsel, Moritz Klaus Springer, Thomas Lorenz
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Methods and systems are provided for improving the operation of a multi-cylinder auto-ignition internal combustion engine. By configuring the cylinders in multiple groups based on compression ratios, and operating the cylinders in a load-dependent manner, fuel consumption may be improved.

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Номер записи: 25
24-10-2013 дата публикации

AUTO-IGNITION INTERNAL COMBUSTION ENGINE WITH PARTIAL DEACTIVATION AND METHOD FOR THE OPERATION OF AN INTERNAL COMBUSTION ENGINE OF SAID TYPE

Номер: US20130276755A1
Автор: Breuer Albert, Linsel Jan, Lorenz Thomas, Ruhland Helmut Hans, Springer Moritz Klaus
Принадлежит: FORD GLOBAL TECHNOLOGIES, LLC

Methods and systems are provided for optimizing the operation of a multi-cylinder auto-ignition internal combustion engine. By configuring the cylinders in multiple groups based on compression ratios, and operating the cylinders in a load-dependent manner, fuel consumption may be optimized. 1. An auto-ignition internal combustion engine having at least two cylinders , in which at least two cylinders are configured so as to form at least two groups with in each case at least one cylinder , the at least one cylinder of at least one group being formed as a cylinder that are switched in a load-dependent manner , wherein{'sub': 'i', 'the at least two groups are characterized by different compression ratios ε, and'}{'sub': 1', '2', '2', '1, 'the at least one cylinder of a first group has a compression ratio εand the at least one cylinder of a second group has a compression ratio ε, where ε<ε.'}2. The auto-ignition internal combustion engine as claimed in claim 1 , wherein claim 1 , in the event of a partial deactivation in the lower part-load range claim 1 , the at least one cylinder of the first group is the at least one cylinder of the internal combustion engine in operation.3. The auto-ignition internal combustion engine as claimed in claim 2 , wherein the at least one cylinder of the second group is formed as an activatable cylinder which is deactivated if a predefinable load Tis undershot and which is activated if a predefinable load Tis exceeded.4. The auto-ignition internal combustion engine as claimed in claim 2 , wherein both the at least one cylinder of the first group and also the at least one cylinder of the second group are formed as switchable cylinders.5. The auto-ignition internal combustion engine as claimed in claim 4 , wherein the at least two cylinders) form two groups with in each case at least one cylinder.6. The auto-ignition internal combustion engine as claimed in claim 5 , wherein the at least one cylinder of the first group has a compression ...

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Номер записи: 26
14-11-2013 дата публикации

SKIP FIRE ENGINE CONTROL

Номер: US20130298870A1
Автор: CHANDLER Christopher W., HAND Christopher C., SILVESTRI Chester J., Switkes Joshua P., TRIPATHI Adya S., WILCUTTS Mark A.
Принадлежит:

A variety of methods and arrangements for controlling the operation of an internal combustion engine in a skip fire variable displacement mode are described. Generally, an engine is controlled to operate in a skip fire variable displacement mode. In one aspect, the spark timing associated with each fired working cycle is based at least in part on the firing history of the fired working chamber. 1. A method of controlling the operation of a spark ignition internal combustion engine including a plurality of working chambers , each working chamber being generally arranged to operate in a succession of working cycles , the method comprising:operating the engine in a skip fire operational mode, wherein during operation of the engine, a selected one of the working chambers will be fired during some working cycles and not fired during other working cycles; andadjusting the spark timing associated with a selected firing of the selected working chamber based at least in part on a firing history of the selected working chamber.2. A method as recited in wherein the spark timing associated with each firing event of the selected working chamber is determined at least in part based on a then current firing history of the selected working chamber.3. A method as recited in wherein the spark timing associated with each working cycle firing is determined at least in part based on a then current firing history of the associated working chamber.4. A method as recited in wherein the spark timing of the selected firing of the selected working chamber is further based in part upon an operational parameter associated with at least one previous firing of the selected working chamber.5. A method as recited in wherein the combustion characteristic is fuel charge.6. A method as recited in wherein when an active working cycle follows a skipped working cycle in the same working chamber claim 1 , the spark timing is advanced relative to the spark timing of the working chamber when the active ...

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Номер записи: 27
14-11-2013 дата публикации

FUEL CONTROL SYSTEM AND ASSOCIATED METHOD

Номер: US20130304360A1
Автор: Payne Edward A., Williams Rodger Karl
Принадлежит:

A fuel control system for controlling the purging of alternate fuel in an internal combustion engine at shutdown includes: at least one valve device configured to deliver a fuel supply to the engine; a first fuel source configured to provide a primary fuel to the valve device; a second fuel source configured to provide an alternate fuel to the valve device; and a controller connected to the valve device and adapted to be connected to an ignition system. The controller is configured to control the valve device responsive to a status of one of the engine and the ignition system. 1. A fuel control system for controlling the purging of alternate fuel in an internal combustion engine at shutdown , comprising:at least one valve device configured to deliver a fuel supply to an engine;a first fuel source configured to provide a primary fuel to the at least one valve device;a second fuel source configured to provide an alternate fuel to the at least one valve device; and control the at least one valve device to selectively deliver the primary fuel, the alternate fuel, or a mixture of the primary fuel and the alternate fuel, to the engine; and', 'control the at least one valve device to selectively deliver the primary fuel to the engine to purge the alternate fuel in the engine responsive to an engine shutdown., 'a controller connected to the at least one valve device and connected to an ignition system, the controller being configured to2. The fuel control system defined in claim 1 , wherein the controller is configured to detect a duration that the engine operates claim 1 , the duration ending with a signal from the ignition system to cease operation of the engine claim 1 , and wherein the controller is configured such that it signals the engine to continue to operate if the duration is less than a threshold time period.3. The fuel control system defined in claim 2 , wherein the controller includes a sensor configured to sense engine operation.4. The fuel control system ...

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Номер записи: 28
21-11-2013 дата публикации

Device for controlling a heat engine

Номер: US20130306037A1
Автор: Julien Hobraiche, Nicolas Gelez
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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Номер записи: 29
21-11-2013 дата публикации

FUEL ALCOHOL CONTENT DETECTION VIA AN EXHAUST GAS SENSOR

Номер: US20130311073A1
Автор: Behr Kenneth John, Clark Timothy Joseph, Hubbard Carolyn Parks, Soltis Richard E., Surnilla Gopichandra
Принадлежит: FORD GLOBAL TECHNOLOGIES, LLC

Various systems and methods are described for an exhaust gas sensor coupled to an exhaust system of an engine. One example method comprises, during selected engine fueling conditions, alternating between applying different voltages to the sensor; and identifying an amount of alcohol in fuel injected to the engine based on sensor outputs at the different voltages. 1. A method , comprising:during selected non-fueling conditions of an engine in a vehicle, applying first and second voltage values to an exhaust gas oxygen sensor and generating an indication of ambient humidity based on sensor outputs at the first and second voltage values;during selected fueling conditions, applying the first and second voltage values as well as a third voltage value to the exhaust gas oxygen sensor, and identifying an ethanol percent in fuel injected to the engine based on sensor outputs at the first and second voltage values and the ambient humidity; andidentifying fuel type of fuel injected to the engine based on sensor outputs at the first, second, and third voltage values and the ambient humidity.2. The method of wherein the engine carries out spark ignition combustion.3. The method of wherein the non-fueling conditions include deceleration fuel shut off.4. The method of wherein the non-fueling conditions includes repeated DFSO conditions occurring during a drive cycle.5. The method of wherein the deceleration fuel shut-off is responsive to a driver tip-out where the vehicle accelerates greater than a threshold amount.6. The method of further comprising generating numerous indications of the ambient humidity throughout the drive cycle.7. The method of wherein the first voltage is a value such that oxygen is pumped from a cell of the sensor claim 1 , but low enough that oxygen compounds including H2O are not dissociated.8. A method claim 1 , comprising:during deceleration fuel shut-off operation of a vehicle, applying different voltage values to an engine's exhaust gas sensor and ...

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Номер записи: 30
28-11-2013 дата публикации

Operator Interface for Vehicles

Номер: US20130317681A1
Автор: Bissontz Jay E.
Принадлежит: International Truck Intellectual Property Company, LLC

A control interface for drivetrain braking provided by a regenerative brake and a non-regenerative brake is implemented using a combination of switches and graphic interface elements. The control interface comprises a control system for allocating drivetrain braking effort between the regenerative brake and the non-regenerative brake, a first operator actuated control for enabling operation of the drivetrain braking, and a second operator actuated control for selecting a target braking effort for drivetrain braking. A graphic display displays to an operator the selected target braking effort and can be used to further display actual braking effort achieved by drivetrain braking. 1. A parallel hybrid electric drivetrain including a control interface for implementing operator control over the drivetrain braking , the parallel hybrid electric drivetrain comprising:a drivetrain braking system including a compression brake and a regenerative brake an autoclutch for coupling the compression brake to the regenerative brake;a plurality of drive wheels;a transmission for coupling the drive wheels to the regenerative brake;a source for requested drivetrain braking effort;a control system responsive to requested drivetrain braking effort for allocating requested drivetrain braking effort between the regenerative brake and the compression brake including control over engagement of the autoclutch to allow torque from the drive wheels to be applied to the compression brake; andthe control system including a first operator actuated control for enabling operation of the drivetrain braking system and a second operator actuated control for selecting a target braking effort from the drivetrain braking system.2. The parallel hybrid electric drivetrain of claim 1 , further comprising:the regenerative brake being one operational mode of an electrical machine; andthe compression brake being one operational mode of an internal combustion engine.3. The parallel hybrid electric drivetrain of ...

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Номер записи: 31
05-12-2013 дата публикации

METHOD AND APPARATUS FOR RESETTING VALVE LIFT FOR USE IN ENGINE BRAKE

Номер: US20130319370A1
Автор: Yang Zhou
Принадлежит:

A method and apparatus for resetting a valve lift for use in an engine brake. A brake piston (), and a hydraulic fluid passage () are arranged within a rocker arm () or a valve bridge () of an engine. A resetting valve arranged between the rocker arm () and the valve bridge () is driven by a change in the distance between the rocker arm () and the valve bridge (). When the valve lift of an engine exhaust valve () reaches a maximum, a reset fluid passage () is opened, the hydraulic pressure within the hydraulic fluid passage is released, the brake piston () is reversed by one interval, the motion transmission between a cam () and the engine exhaust valve () is partially disengaged, and the valve lift of the engine exhaust valve () is reduced. Also, during a returning process of the valve lift of the engine exhaust valve () after reaching the maximum position, repositioning of the reset valve is used to maintain a supply of pressure within the hydraulic fluid passage, the brake piston () is allowed to be positioned at an extended position, and the motion transmission between the cam () and the engine exhaust valve () is resumed. The apparatus for resetting the valve lift can be integrated within an engine exhaust valve brake, and is structurally simple, convenient to install and to adjust, thereby improving safety and reliability. 1. A method for resetting a valve lift for an integrated engine brake , comprising a process of utilizing a motion of a cam to open an engine exhaust valve through a rocker arm and a valve bridge of an engine , wherein the rocker arm or the valve bridge is provided with a braking piston and a hydraulic flow passage , and the braking piston is connected to the hydraulic flow passage , wherein the process comprises the following steps: placing the braking piston at an extended position by supplying pressure to the hydraulic flow passage , providing a reset valve between the rocker arm and the valve bridge , connecting the reset valve to a ...

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Номер записи: 32
12-12-2013 дата публикации

Method for operating an internal combustion engine

Номер: US20130327292A1
Автор: Ernst Friedrich Ostertag
Принадлежит: Dr Ing HCF Porsche AG

A method for operating an internal combustion engine, which includes one or more cylinders, of which individual cylinders can be deactivated and, in an optimized manner with regard to time, reactivated again in order to influence a torque output by the internal combustion engine. To further optimize, with regard to time, the provision of torque during the operation of an internal combustion engine, a time delay and/or a delay in degrees crank angle or revolutions of the internal combustion engine between a triggering and the reactivation of a deactivated cylinder is taken into consideration for the reactivation of the deactivated cylinder.

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Номер записи: 33
19-12-2013 дата публикации

INTERNAL COMBUSTION ENGINE FEATURING PARTIAL SHUTDOWN AND METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE OF THIS KIND

Номер: US20130333663A1
Автор: Bartsch Leonhard, Chen Guohui, Ruhland Helmut Hans, Willems Werner
Принадлежит: FORD GLOBAL TECHNOLOGIES, LLC

Systems and methods are provided for an engine wherein one group of cylinders is active and a second group of cylinders is switchable, such that under low loads the second group of cylinders is deactivated, and under high loads the second group of cylinders is activated. Following deactivation of the second group of cylinders a throttling element in an intake line for the second group of cylinders is gradually closed. The closing of the throttling element may reduce pumping losses and thus increase engine efficiency. 1. An internal combustion engine comprising:at least two cylinders, whereineach cylinder has an exhaust line for discharging exhaust gases via an exhaust system,each cylinder has an intake line for taking in charge air via an intake system,at least two cylinders form at least two groups, each comprising at least one cylinder, wherein at least one cylinder of a first group is a cylinder which remains active even when the internal combustion engine is partially shut down, and at least one cylinder of a second group is designed as a cylinder which can be switched as a function of load,wherein,a throttling element is provided in the intake line of the at least one cylinder of the second group, wherein the throttling element varies a size of a flow cross section of the intake line according to air flow through a turbocharger turbine.2. The internal combustion engine as claimed in claim 1 , wherein the throttling element is a valve.3. The internal combustion engine as claimed in claim 1 , wherein the throttling element is a pivotable flap.4. The internal combustion engine as claimed in claim 1 , wherein the throttling element is continuously variable.5. The internal combustion engine as claimed in claim 1 , wherein the turbocharger turbine has an adjustable wastegate.6. The internal combustion engine as claimed in claim 1 , wherein at least one exhaust gas aftertreatment system is provided in the exhaust system.7. The internal combustion engine as claimed in ...

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Номер записи: 34
02-01-2014 дата публикации

Method and system for pre-ignition control

Номер: US20140000557A1
Автор: Chris Paul Glugla, Garlan J. Huberts, Michael Damian Czekala
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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Номер записи: 35
16-01-2014 дата публикации

METHOD AND DEVICE FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE

Номер: US20140014066A1
Автор: Yacoub Yasser Mohamed sayed
Принадлежит:

A system is disclosed herein for a four-stroke internal combustion engine, the system comprising: at least two cylinders; a fuel direct injection device; a variable valve timing system; an engine controller to control spark ignition and valve timing according to load; wherein, below a lower load threshold, a first cylinder is deactivated, an injection of fuel takes place into a combustion chamber of the first cylinder and an outlet valve of the first cylinder is open during a compression stroke. Fuel injected into the deactivated cylinders may enter the exhaust tract through the open outlet valves and serve as a reducing agent therein. 2. The system as claimed in claim 1 , wherein the injection of fuel is during the compression stroke.3. The system as claimed in claim 1 , wherein the outlet valve of the first cylinder is open for substantially an entire duration of the compression stroke of the first cylinder.4. The system as claimed in claim 1 , wherein a post-injection of fuel takes place during an expansion stroke of the first cylinder.5. The system as claimed in claim 1 , wherein the first cylinder is deactivated by discontinuing spark ignition.6. The system as claimed in claim 1 , further comprising a second cylinder which is active claim 1 , even below a lower load threshold claim 1 , wherein the outlet valve of the second cylinder is closed during a compression stroke.7. The system as claimed in claim 1 , wherein the at least two cylinders comprise four cylinders.8. The system as claimed in claim 7 , wherein the first cylinder comprises a first and a third cylinder in a firing order and the second cylinder comprises a second and fourth cylinder in the firing order claim 7 , such that first and the second cylinders are repeated twice in a four cylinder engine.9. A method for an engine claim 7 , comprising:above an upper load, maintaining an outlet valve of a first cylinder closed during a full compression stroke;below a lower load, deactivating the first ...

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Номер записи: 36
23-01-2014 дата публикации

COMBINED ROCKER ARM APPARATUS FOR ACTUATING AUXILIARY VALVE OF ENGINE

Номер: US20140020654A1
Автор: Yang Zhou
Принадлежит: Shanghai Universoon Auto Parts Co., Ltd.

A combined rocker arm apparatus for actuating auxiliary valve of engine, comprises an auxiliary actuator, a main rocker arm and a secondary rocker arm. The auxiliary actuator comprises an auxiliary rocker arm and an auxiliary cam. The auxiliary rocker arm and the main rocker arm are mounted on the rocker arm shaft in parallel. The auxiliary rocker arm is connected to the auxiliary cam at one end and adjacent to the secondary rocker arm at the other end. The auxiliary rocker arm includes a drive mechanism which provided with a piston. In the non-operation mode of the drive mechanism, the piston is drawn back, then the auxiliary rocker arm is disconnected with the secondary rocker arm; in the operation mode of the drive mechanism, the piston is pushed out, then the auxiliary rocker arm is connected with the secondary rocker arm. 1. A combined rocker arm device for producing an auxiliary valve event of an engine , the engine comprising a conventional valve actuator , the conventional valve actuator comprising a cam , a rocker arm shaft , a conventional rocker arm and a valve , wherein the combined rocker arm device comprises an auxiliary actuator and a transition rocker arm , the auxiliary actuator acts on the transition rocker arm , and the transition rocker arm acts on the valve.2. The combined rocker arm device for producing an auxiliary engine valve event according to claim 1 , wherein the auxiliary engine valve event comprises a valve event for engine braking.3. The combined rocker arm device for producing an auxiliary engine valve event according to claim 1 , wherein the auxiliary actuator comprises an auxiliary rocker arm and an auxiliary cam claim 1 , the auxiliary rocker arm and the conventional rocker arm are mounted on the rocker arm shaft side by side claim 1 , one end of the auxiliary rocker arm is connected to the auxiliary cam claim 1 , and the other end of the auxiliary rocker arm is placed adjacent to the transition rocker arm; the auxiliary rocker arm ...

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Номер записи: 37
30-01-2014 дата публикации

Variable valve timing for egr control

Номер: US20140026872A1
Автор: Adam Nathan Banker, James Michael Kerns, Michael James Uhrich, Stephen B. Smith
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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Номер записи: 38
06-02-2014 дата публикации

ENGINE BRAKING CONTROLLER

Номер: US20140034010A1
Автор: CARLSON Steven E., SERRANO Louis J., Switkes Joshua P., YUILLE Ronald D.
Принадлежит: TULA TECHNOLOGY, INC.

In one aspect of the invention, an engine is operated in a skip cylinder engine braking mode. In the skip cylinder engine braking mode, selected working cycles of selected working chambers are deactivated. Other selected working cycles of the selected working chambers are operated in a braking mode. Accordingly, individual working chambers are sometimes deactivated and sometimes operated in the braking mode while the engine is operating in the skip cylinder engine braking mode. Various methods for cylinder control are described, which improve fuel economy, catalytic converter performance, and vehicle NVH characteristics. 1. A method of controlling the amount of engine braking provided by an engine having at least one working chamber , the method comprising:determining a desired amount of engine braking; andoperating the engine in a skip cylinder engine braking mode that substantially delivers the desired amount of engine braking, wherein in the skip cylinder engine braking mode, selected working cycles of at least one selected working chamber are deactivated and other selected working cycles of at least one selected working chamber are operated in a braking mode such that at least one working chamber is sometimes deactivated and sometimes operated in the braking mode.2. A method as recited in wherein air flow into the deactivated working chambers is cut off to minimize pumping losses.3. A method as recited in wherein claim 1 , during at least some of the working cycles claim 1 , fuel is delivered to the working chambers operated in the braking mode.4. A method as recited in wherein claim 1 , during at least some of the working cycles claim 1 , air is pumped through the chambers operated in the braking mode.5. A method as recited in wherein only intake valves are opened during at least some of the working cycles operated in the braking mode such that no air is pumped through the associated working chamber during such working cycles operated in the braking mode.6. A ...

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Номер записи: 39
13-02-2014 дата публикации

Split bank and multimode skip fire operation

Номер: US20140041630A1
Автор: Biswa R. Ghosh, Joshua P. Switkes, Louis J. Serrano, Norman C. LO, Steven E. CARLSON, Xin Yuan
Принадлежит: Tula Technology Inc

Various methods and arrangements for operating a skip fire engine control system are described. In one aspect of the invention, a distinct firing sequence is determined for each bank of working chambers that is used to operate the bank in a skip fire manner. Each firing sequence uses a different firing fraction. In another aspect of the invention, a determination is made as to whether a firing sequence should be dynamically generated or selected from a set of predefined firing sequences.

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Номер записи: 40
27-02-2014 дата публикации

CYLINDER DEACTIVATION PATTERN MATCHING

Номер: US20140053802A1
Автор: Rayl Allen B.
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A cylinder control module: selects one of N predetermined cylinder activation/deactivation patterns as a desired cylinder activation/deactivation pattern for cylinders of an engine, wherein N is an integer greater than two; and activates and deactivates opening of intake and exhaust valves of first and second ones of the cylinders that are to be activated based on the desired cylinder activation/deactivation pattern, respectively. A fuel control module provides fuel to the first ones of the cylinders and disables fueling to the second ones of the cylinders. The cylinder control module further: determines M possible ones of the N cylinder activation/deactivation patterns, wherein M is an integer greater than or equal to one; selectively compares the M possible cylinder activation/deactivation patterns with the desired cylinder activation/deactivation pattern; and selectively updates the desired cylinder activation/deactivation pattern to one of the M possible cylinder activation/deactivation patterns. 1. A cylinder control system of a vehicle , comprising: selects one of N predetermined cylinder activation/deactivation patterns as a desired cylinder activation/deactivation pattern for cylinders of an engine, wherein N is an integer greater than two;', 'activates opening of intake and exhaust valves of first ones of the cylinders that are to be activated based on the desired cylinder activation/deactivation pattern; and', 'deactivates opening of intake and exhaust valves of second ones of the cylinders that are to be deactivated based on the desired cylinder activation/deactivation pattern; and, 'a cylinder control module thata fuel control module that provides fuel to the first ones of the cylinders and that disables fueling to the second ones of the cylinders, determines M possible ones of the N cylinder activation/deactivation patterns, wherein M is an integer greater than or equal to one;', 'selectively compares the M possible cylinder activation/deactivation ...

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Номер записи: 41
27-02-2014 дата публикации

SYSTEM AND METHOD FOR DEACTIVATING A CYLINDER OF AN ENGINE AND REACTIVATING THE CYLINDER BASED ON AN ESTIMATED TRAPPED AIR MASS

Номер: US20140053803A1
Автор: Rayl Allen B.
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A system according to the principles of the present disclosure includes a cylinder activation module and a spark control module. The cylinder activation module selectively deactivates and reactivates a cylinder of an engine. The cylinder activation module deactivates the cylinder after intake air is drawn into the cylinder and before fuel is injected into the cylinder or spark is generated in the cylinder. When the cylinder is reactivated, the spark control module selectively controls a spark plug to generate spark in the cylinder before an intake valve or an exhaust valve of the cylinder is opened. 1. A system comprising: selectively deactivates and reactivates a cylinder of an engine; and', 'deactivates the cylinder after intake air is drawn into the cylinder and before fuel is injected into the cylinder or spark is generated in the cylinder; and, 'a cylinder activation module thata spark control module that, when the cylinder is reactivated, selectively controls a spark plug to generate spark in the cylinder before an intake valve or an exhaust valve of the cylinder is opened.2. The system of further comprising a fuel control module that claim 1 , when the cylinder is reactivated claim 1 , selectively controls a fuel injector to inject fuel into the cylinder before the intake valve or the exhaust valve is opened and before spark is generated in the cylinder.3. The system of wherein the spark control module selectively generates spark in the cylinder before the intake valve or the exhaust valve is opened when a pressure in the cylinder is greater than a first pressure.4. The system of wherein the cylinder activation module estimates the pressure in the cylinder based on a volume claim 3 , a temperature claim 3 , and a mass of a charge trapped within the cylinder when the cylinder is deactivated.5. The system of wherein the spark control module generates spark in the cylinder before the intake valve or the exhaust valve is opened when a mass of air within the ...

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Номер записи: 42
27-02-2014 дата публикации

CYLINDER ACTIVATION AND DEACTIVATION CONTROL SYSTEMS AND METHODS

Номер: US20140053804A1
Автор: Beikmann Randall S., Naik Sanjeev M., Rayl Allen B.
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A ranking module determines N ranking values for N predetermined cylinder activation/deactivation sequences of an engine, respectively. N is an integer greater than or equal to two. A cylinder control module, based on the N ranking values, selects one of the N predetermined cylinder activation/deactivation sequences as a desired cylinder activation/deactivation sequence for cylinders of the engine. The cylinder control module also: activates opening of intake and exhaust valves of first ones of the cylinders that are to be activated based on the desired cylinder activation/deactivation sequence; and deactivates opening of intake and exhaust valves of second ones of the cylinders that are to be deactivated based on the desired cylinder activation/deactivation sequence. A fuel control module provides fuel to the first ones of the cylinders and disables fueling to the second ones of the cylinders. 1. A cylinder control system of a vehicle , comprising:a ranking module that determines N ranking values for N predetermined cylinder activation/deactivation sequences of an engine, respectively,wherein N is an integer greater than or equal to two; based on the N ranking values, selects one of the N predetermined cylinder activation/deactivation sequences as a desired cylinder activation/deactivation sequence for cylinders of the engine;', 'activates opening of intake and exhaust valves of first ones of the cylinders that are to be activated based on the desired cylinder activation/deactivation sequence; and', 'deactivates opening of intake and exhaust valves of second ones of the cylinders that are to be deactivated based on the desired cylinder activation/deactivation sequence; and, 'a cylinder control module thata fuel control module that provides fuel to the first ones of the cylinders and that disables fueling to the second ones of the cylinders.2. The cylinder control system of wherein the ranking module determines the N ranking values based on:the N predetermined ...

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Номер записи: 43
27-02-2014 дата публикации

SYSTEM AND METHOD FOR CONTROLLING SPARK TIMING WHEN CYLINDERS OF AN ENGINE ARE DEACTIVATED TO REDUCE NOISE AND VIBRATION

Номер: US20140053805A1
Автор: Brennan Daniel G., Naik Sanjeev M.
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A system according to the principles of the present disclosure includes a cylinder activation module and a spark timing module. The cylinder activation module selectively deactivates and reactivates a cylinder of an engine based on a driver torque request. When the cylinder is deactivated, the spark timing module selectively increases an amount by which spark timing of at least one active cylinder of the engine is retarded based on noise and vibration generated by the engine when the cylinder is deactivated. 1. A system comprising:a cylinder activation module that selectively deactivates and reactivates a cylinder of an engine based on a driver torque request; anda spark timing module that, when the cylinder is deactivated, selectively increases an amount by which spark timing of at least one active cylinder of the engine is retarded based on noise and vibration generated by the engine when the cylinder is deactivated.2. The system of wherein:the spark timing module selectively increases the amount of spark retard for M of N active cylinders of the engine when the cylinder is deactivated; andM is less than N.3. The system of wherein the spark timing module selectively increases the amount of spark retard for all active cylinders of the engine when the cylinder is deactivated.4. The system of wherein:the cylinder activation module selectively reactivates N cylinders of the engine when the amount of spark retard for all of the active cylinders is increased; andN is based on the driver torque request.5. The system of further comprising a noise and vibration (N&V) prediction module that predicts the noise and vibration generated by the engine when the cylinder is deactivated.6. The system of wherein the N&V prediction module predicts the noise and vibration generated by the engine based on a predetermined relationship between an input frequency at a powertrain mount and an output frequency at a driver interface component.7. The system of wherein the N&V prediction ...

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Номер записи: 44
27-02-2014 дата публикации

FOUR-CYLINDER IN-LINE ENGINE WITH PARTIAL SHUTDOWN AND METHOD FOR OPERATING SUCH A FOUR-CYLINDER IN-LINE ENGINE

Номер: US20140053806A1
Автор: Bartsch Guenter, Friedfeldt Rainer, Weber Carsten, Wirth Martin
Принадлежит: FORD GLOBAL TECHNOLOGIES, LLC

An engine method, comprising turning off a second cylinder group in response to engine load falling below a first threshold, the second cylinder group including a first outer most cylinder and its immediately adjacent cylinder and turning on the second cylinder group in response to engine load raising above a second threshold and operating a first cylinder group constantly throughout engine operation; the first cylinder group including a second outer most cylinder and its immediately adjacent cylinder. By this method, engine efficiency may increase during partial load operating conditions from low engine loads. 1. An engine system , comprising:a cylinder head;four cylinders arranged in-line along a longitudinal axis of the cylinder head, wherein the four cylinders are configured such that they form two groups each of two cylinders, and two cylinders of a first group are permanently operated cylinders when the engine is in operation, and the cylinders of a second group can be switched-off load-dependently as part of a partial shutdown, the four cylinders configured such that in each case an outermost cylinder and the adjacent innermost cylinder form a cylinder group, and;a crank drive, including a crankshaft that is mounted in a crankcase and has a crankshaft throw associated with each of the cylinders wherein the crankshaft throws are arranged spaced apart along the longitudinal axis of the crankshaft, and a piston associated with the cylinder is mounted on each crankshaft throw by a conrod; andan oil circuit and a pump for delivery of engine oil to a supply line of a spray oil cooling which wets the piston floor of each piston using nozzles on a crankcase side with engine oil, wherein the supply line is oriented along the longitudinal axis of the crankshaft; the supply line located between two innermost cylinders and including a shut-off element, the supply line providing the spray oil cooling of the second cylinder group is switched off on partial shutdown by ...

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Номер записи: 45
13-03-2014 дата публикации

AIR MASS DETERMINATION FOR CYLINDER ACTIVATION AND DEACTIVATION CONTROL SYSTEMS

Номер: US20140069374A1
Автор: MATTHEWS GREGORY P.
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A system includes a cylinder event module that determines an air-per-cylinder value for a cylinder intake event or a cylinder non-intake event of a current cylinder based on a mass air flow signal and an engine speed signal. A status module generates a status signal indicating whether the current cylinder is activated. A deactivation module, based on the status signal, determines a current accumulated air mass in an intake manifold of an engine: for air received by the intake manifold since a last cylinder intake event of an activated cylinder and prior to one or more consecutive cylinder non-intake events of one or more deactivated cylinders; and based on a previous accumulated air mass in the intake manifold and the air-per-cylinder value. An activation module, based on the status signal, determines an air mass value for the current cylinder based on the air-per-cylinder value and the current accumulated air mass. 1. A system comprising:a cylinder event module that determines an air-per-cylinder value for one of a cylinder intake event or a cylinder non-intake event of a current cylinder of an engine based on a mass air flow signal and an engine speed signal, wherein the engine includes a plurality of cylinders including the current cylinder;a status module that generates a status signal indicating whether the current cylinder is activated or deactivated; for air received by the intake manifold since a last cylinder intake event of an activated cylinder and prior to one or more cylinder non-intake events of one or more deactivated cylinders, and', 'based on a previous accumulated air mass in the intake manifold and the air-per-cylinder value; and, 'a deactivation module that, based on the status signal, determines a current accumulated air mass in an intake manifold of the engine'}an activation module that, based on the status signal, determines an air mass value for the current cylinder based on the air-per-cylinder value and the current accumulated air mass.2. ...

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Номер записи: 46
13-03-2014 дата публикации

AIR PER CYLINDER DETERMINATION SYSTEMS AND METHODS

Номер: US20140069375A1
Автор: Brennan Daniel G., Liu Zhiping Steven, MATTHEWS GREGORY P.
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A cylinder control system of a vehicle includes a cylinder control module and an air per cylinder (APC) prediction module. The cylinder control module determines a desired cylinder activation/deactivation sequence. The cylinder control module also activates and deactivates valves of cylinders of an engine based on the desired cylinder activation/deactivation sequence. The APC prediction module predicts an amount of air that will be trapped within a next activated cylinder in a firing order of the cylinders based on a cylinder activation/deactivation sequence of the last Q cylinders in the firing order. Q is an integer greater than one. 1. A cylinder control system of a vehicle , comprising:a cylinder control module that determines a desired cylinder activation/deactivation sequence and that activates and deactivates valves of cylinders of an engine based on the desired cylinder activation/deactivation sequence; andan air per cylinder (APC) prediction module that predicts an amount of air that will be trapped within a next activated cylinder in a firing order of the cylinders based on a cylinder activation/deactivation sequence of the last Q cylinders in the firing order,where Q is an integer greater than one.2. The cylinder control system of further comprising a spark control module that sets a spark timing for the next activated cylinder based on the amount of air that will be trapped within the next activated cylinder.3. The cylinder control system of wherein the APC prediction module predicts the amount of air that will be trapped within the next activated cylinder further based on a location of the next activated cylinder in the firing order.4. The cylinder control system of further comprising a second APC prediction module that predicts a second amount of air that will be trapped within a second activated cylinder based on the cylinder activation/deactivation sequence of the last Q cylinders in the firing order claim 1 ,wherein the second activated cylinder ...

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Номер записи: 47
13-03-2014 дата публикации

INTAKE PORT PRESSURE PREDICTION FOR CYLINDER ACTIVATION AND DEACTIVATION CONTROL SYSTEMS

Номер: US20140069376A1
Автор: Liu Zhiping Steven, MATTHEWS GREGORY P.
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A system includes a parameter module that determines at least one of a position of a throttle and a load of an engine. A cylinder status module generates a status signal indicating an activation status of each cylinder of the engine. The cylinder status module determines whether one or more of the cylinders are activated. A first pressure prediction module, when all of the cylinders are activated, predicts first intake port pressures for the cylinders of the engine according to a first model and based on the at least one of the position of the throttle and the engine load. A second pressure prediction module, when one or more of the cylinders is deactivated, predicts second intake port pressures for the deactivated cylinders according to a second model and based on the status signal and the at least one of the position of the throttle and the engine load. 1. A system comprising:a parameter module that determines at least one of a position of a throttle and a load of an engine, wherein the engine comprises a plurality of cylinders;a cylinder status module that generates a status signal indicating an activation status for each of the plurality of cylinders, wherein the cylinder status module determines whether one or more of the plurality of cylinders are deactivated;a first pressure prediction module that, when all of the plurality of cylinders are activated, predicts first intake port pressures for the plurality of cylinders according to a first model and based on the at least one of the position of the throttle and the load of the engine; anda second pressure prediction module that, when one or more of the plurality of cylinders is deactivated, predicts second intake port pressures for the deactivated cylinders according to a second model and based on the status signal and the at least one of the position of the throttle and the load of the engine.2. The system of claim 1 , wherein the second model includes the first model and a summation that accounts for:the ...

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Номер записи: 48
13-03-2014 дата публикации

VOLUMETRIC EFFICIENCY DETERMINATION SYSTEMS AND METHODS

Номер: US20140069377A1
Автор: Brennan Daniel G., MATTHEWS GREGORY P., Wiggins Layne K.
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A cylinder control system of a vehicle, includes a cylinder control module and a volumetric efficiency (VE) module. The cylinder control module determines a desired cylinder activation/deactivation sequence. The cylinder control module also activates and deactivates valves of cylinders of an engine based on the desired cylinder activation/deactivation sequence. The VE module determines a volumetric efficiency based on a cylinder activation/deactivation sequence of the last Q cylinders in the firing order. Q is an integer greater than one. 1. A cylinder control system of a vehicle , comprising:a cylinder control module that determines a desired cylinder activation/deactivation sequence and that activates and deactivates valves of cylinders of an engine based on the desired cylinder activation/deactivation sequence; anda volumetric efficiency (VE) module that determines a volumetric efficiency based on a cylinder activation/deactivation sequence of the last Q cylinders in the firing order,wherein Q is an integer greater than one.2. The cylinder control system of wherein the VE module determines the VE further based on a predicted intake port pressure at an intake valve closing timing and a predicted exhaust port pressure at an exhaust valve closing timing.3. The cylinder control system of wherein the VE module determines the VE based on the predicted intake port pressure divided by the predicted exhaust port pressure.4. The cylinder control system of wherein the VE module determines the predicted intake port pressure based on a pressure within an intake manifold of the engine measured before the intake valve closing timing.5. The cylinder control system of wherein the VE module determines the predicted exhaust port pressure based on a mass of air trapped within a cylinder and an engine speed determined before the exhaust valve closing timing.6. The cylinder control system of wherein the VE module determines the VE further based on an engine speed.7. The cylinder ...

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Номер записи: 49
13-03-2014 дата публикации

EFFECTIVE CYLINDER COUNT CONTROL SYSTEMS AND METHODS

Номер: US20140069378A1
Автор: Beikmann Randall S., Burleigh Darrell W.
Принадлежит: GM GLOBAL TECHNOLOGIES OPERATIONS LLC

Based on a desired average number of activated cylinders per sub-period of a predetermined period including P sub-periods, a cylinder control module selects one of N predetermined cylinder activation/deactivation patterns. The selected cylinder activation/deactivation pattern corresponds to Q activated cylinders per sub-period, Q is an integer between zero and a total number of cylinders of an engine, inclusive, P is an integer greater than one, and the desired average number of active cylinders is a number between zero and the total number of cylinders of the engine. The cylinder control module also determines an adjusted cylinder activation/deactivation pattern based on the selected predetermined cylinder activation/deactivation pattern, generates a desired cylinder activation/deactivation pattern for the predetermined period using the selected predetermined cylinder activation/deactivation pattern during a first number of the P sub-periods and using the adjusted cylinder activation/deactivation pattern during a second number of the P sub-periods. 1. A cylinder control system comprising: based on a desired average number of activated cylinders per sub-period of a predetermined period including P sub-periods, selects one of N predetermined cylinder activation/deactivation patterns,', 'wherein the one of the N predetermined cylinder activation/deactivation patterns corresponds to Q activated cylinders per sub-period, Q is an integer between zero and a total number of cylinders of an engine, inclusive, P is an integer greater than one, and the desired average number of active cylinders is an integer or non-integer between zero and the total number of cylinders of the engine;', 'determines an adjusted cylinder activation/deactivation pattern based on the one of the N predetermined cylinder activation/deactivation patterns;', 'generates a desired cylinder activation/deactivation pattern for the predetermined period using the one of the N predetermined cylinder ...

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Номер записи: 50
13-03-2014 дата публикации

RECURSIVE FIRING PATTERN ALGORITHM FOR VARIABLE CYLINDER DEACTIVATION IN TRANSIENT OPERATION

Номер: US20140069379A1
Автор: Beikmann Randall S.
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A cylinder control module generates a desired cylinder activation/deactivation sequence for a future period based on Q predetermined cylinder activation/deactivation sub-sequences used during a previous period, a desired number of cylinders to be activated during a predetermined period including the previous and future periods, and an operating condition. Q is an integer greater than zero. The cylinder control module activates and deactivates opening of intake and exhaust valves of first and second ones of the cylinders that are to be activated and deactivated based on the desired cylinder activation/deactivation sequence, respectively. A fuel control module provides and disables fuel to the first and second ones of the cylinders, respectively. 1. A cylinder control system comprising: generates a desired cylinder activation/deactivation sequence for cylinders of an engine and for a first predetermined number of crankshaft revolutions using N predetermined cylinder activation/deactivation sub-sequences, each of the N predetermined cylinder activation/deactivation sub-sequences corresponding to a second predetermined number of crankshaft revolutions, wherein N is an integer greater than zero, and the second predetermined number is less than the first predetermined number;', 'activates opening of intake and exhaust valves of first ones of the cylinders that are to be activated based on the desired cylinder activation/deactivation sequence; and', 'deactivates opening of intake and exhaust valves of second ones of the cylinders that are to be deactivated based on the desired cylinder activation/deactivation sequence; and, 'a cylinder control module thata fuel control module that provides fuel to the first ones of the cylinders and that disables fueling to the second ones of the cylinders,wherein the cylinder control module further generates the desired cylinder activation/deactivation sequence for a future period based on a desired number of the cylinders to be activated ...

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Номер записи: 51
13-03-2014 дата публикации

System and method for controlling a firing sequence of an engine to reduce vibration when cylinders of the engine are deactivated

Номер: US20140069381A1
Автор: Randall S. Beikmann
Принадлежит: GM GLOBAL TECHNOLOGY OPERATIONS LLC

A system according to the principles of the present disclosure includes a vibration prediction module and a firing sequence module. The vibration prediction module predicts a modal response of a vehicle based on a firing sequence of an engine when a cylinder of the engine is deactivated. The firing sequence module adjusts the firing sequence of the engine based on the predicted modal response of the vehicle.

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Номер записи: 52
13-03-2014 дата публикации

INTERNAL COMBUSTION ENGINE AND METHOD OF OPERATING SAME

Номер: US20140074384A1
Автор: Pelmear Douglas A.
Принадлежит:

An internal combustion engine and a method for maximizing fuel efficiency of an internal combustion engine. The internal combustion engine includes an engine block assembly having an electromagnet coupled thereto and an engine component movable relative to the engine block assembly. The engine component includes a permanent magnet coupled thereto. A control system is provided to selectively provide an electrical current to the electromagnet to produce a desired magnetic field, wherein the magnetic field of the electromagnet cooperates with a magnetic field of the permanent magnet to affect a motion of the engine component in respect of the engine block assembly. 1. An engine comprising:an engine block having at least one cylinder bank including a plurality of cylinder bores formed therein;a piston reciprocatingly disposed in each of the cylinder bores, the piston including a top surface having a skirt depending therefrom;a crankshaft rotatably mounted to the engine block;a plurality of connecting rods having a first end and a second end, the first end rotatably attached to the crankshaft and the second end coupled to the piston;a cylinder head mounted to the cylinder bank and covering the cylinder bores, the cylinder head including an intake valve and an exhaust valve in fluid communication with each of the cylinder bores;an oil pan mounted to a lower end of the engine block to form a crankcase area of the engine;at least one permanent magnet disposed in the top surface of the piston;at least one electromagnet disposed in the engine block adjacent the piston; anda control system selectively providing an electrical current to the at least one electromagnet to produce a desired magnetic field, wherein the magnetic field of the at least one electromagnet cooperates with a magnetic field of the at least one permanent magnet to affect a motion of the piston and the crankshaft in respect of the engine block.2. The engine according to claim 1 , further comprising a ...

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Номер записи: 53
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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Номер записи: 54
01-01-2015 дата публикации

Rapid LNG Engine Warm-Up Utilizing Engine Compression Brakes

Номер: US20150000630A1
Автор: Coldren Dana Ray
Принадлежит:

A system and method of utilizing engine compression braking technology to create a parasitic load on an engine during initial idling by putting some of the engine cylinders in braking mode while others remain in power mode. Engine compression brakes are operably connected to the engine cylinders. When engine temperature is below a predetermined value, the engine compression brakes for a portion of the cylinders are activated, and those cylinders impose a parasitic load on the engine that rapidly warms the engine. 1. A system for rapidly warming up a dual fuel engine , the system comprising:a plurality of cylinders;at least one electronically controlled high pressure direct injector operably attached to each cylinder, the at least one high pressure direct injector configured to deliver diesel fuel and natural gas to the cylinder;an electronically controlled engine compression brake operably attached to at least one of the cylinders;a sensor for sensing a temperature of the engine; andan electronic control module in control communication with each high pressure direct injector, the electronic control module including a rapid warm-up mode in which the high pressure direct injectors for a first portion of the cylinders are activated and the engine compression brakes for a second portion of the cylinders are activated.2. The system of wherein:the sensor is adapted to sense engine coolant temperature.3. The system of wherein:the sensor is adapted to sense engine exhaust temperature.4. The system of wherein:the sensor is adapted to sense engine oil temperature.5. The system of wherein:the first portion of the cylinders and the second portion of the cylinders equals the plurality of cylinders.6. The system of wherein:an electronically controlled engine compression brake is operably attached to each of the cylinders.7. The system of wherein:the high pressure direct injectors are configured to deliver additional diesel fuel to the first portion of the cylinders during rapid ...

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Номер записи: 55
07-01-2021 дата публикации

MANAGING ENGINE FIRING FRACTION CHANGES

Номер: US20210001832A1
Автор: Cai Xiaoping, Phillips Andrew W., SERRANO Louis J.
Принадлежит:

Methods and controllers for coordinating firing fraction transitions that occur in conjunction with transmission shifts are described. In one aspect, an engine controller transmits a do-not-shift instruction to a transmission controller based at least in part on a determination that a particular type of firing fraction transition is desired. The firing fraction transition is then implemented using a skip fire transition protocol. In this manner, the transmission is affirmatively prevented from shifting during the firing fraction transition. The described approaches are well suited for use in connection with transitions to DCCO or DFCO operation. 1. A method of managing a powertrain having an internal combustion engine and a transmission , the internal combustion engine being configured to at least sometimes operate in a skip fire or other cylinder output level modulation operating mode , the method comprising:determining that a firing fraction transition or transitory firing fraction change is desired;transmitting a do-not-shift instruction based at least in part on the determination that the firing fraction transition or transitory firing fraction change is desired; andimplementing the firing fraction transition or the transitory firing fraction change using a transition protocol that involves skip fire or other cylinder output level modulation, whereby the transmission is affirmatively prevented from shifting during the firing fraction transition or transitory firing fraction change.2. A method as recited in wherein the do-not-shift instruction takes the form of a hold-shift flag set to a first state in an engine management message transmitted by an engine controller claim 1 , the first state being indicative of an intent to prevent shifts from occurring while the hold-shift flag is set to the first state.3. A method as recited in wherein the powertrain is part of a vehicle having a Controller Area Network (CAN) bus and the do-not-shift instruction is transmitted ...

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Номер записи: 56
03-01-2019 дата публикации

Start-Stop Device for Initiating an Automatic Switch-Off Process of a Driving Machine

Номер: US20190001982A1
Автор: BODENDORF Frank, MEINHARD Tobias
Принадлежит:

A start-stop device initiates an automatic switch-off process of a driving machine in a motor vehicle. The start-stop device is designed to automatically switch off the driving machine when predefined switch-off conditions are met. The start-stop device has a stop coordinator which identifies a switch-off behavior suitable for the switch-off process on the basis of available information and ensures that the identified switch-off behavior is implemented when an automatic switch-off process is initiated. 1. An apparatus for initiating an automatic switch-off procedure of a drive machine in a motor vehicle , comprising:a start-stop device configured to automatically switch-off the drive machine if predetermined switch-off conditions are fulfilled, whereinthe start-stop device comprises a stop coordinator,the stop coordinator is configured to identify a switch-off behavior suitable for the switch-off procedure based on prevailing information, andthe stop coordinator ensures that the identified switch-off behavior is implemented when the automatic switch-off procedure is initiated.2. The apparatus as claimed in claim 1 , whereinthe stop coordinator is configured so as to select a stop operating mode that is to be initiated from at least two stop operating modes having respectively defined switch-off behavior depending upon prevailing operating parameters of the motor vehicle and, corresponding to the selected stop operating mode, to trigger an automatic switch-off procedure of the drive machine in order to achieve the associated switch-off behavior.3. The apparatus as claimed in claim 1 , whereinthe start-stop device has no operating element by which a driver may select a suitable switch-off behavior.4. The apparatus as claimed in claim 1 , whereinthe stop coordinator is configured, depending upon prevailing operating parameters of the motor vehicle, to select a stop operating mode that is to be initiated from at least three possible stop operating modes having different ...

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Номер записи: 57
05-01-2017 дата публикации

Park Positions for Variable Camshaft Phasing Systems and Methods

Номер: US20170002751A1
Автор: Stewart Etsuko Muraji, TATAVARTHI RAMAKRISHNA, York Gregory J., Yurgil James R.
Принадлежит:

An engine control system for a vehicle includes a shutdown control module that generates a command to shut down an engine of the vehicle when at least one of: a driver requests the shutdown of the engine via an ignition system; and when one or more predetermined conditions are satisfied for shutting down the engine without the driver requesting shutdown of the engine via the ignition system. A valve control module, when the command to shut down the engine is generated, advances an exhaust camshaft phaser based on a predetermined exhaust park position. When the exhaust camshaft phaser is in the predetermined exhaust park position, an exhaust valve of a cylinder is fully closed during an exhaust stroke of the cylinder before a piston of the cylinder reaches a topmost position for a next intake stroke of the cylinder. 1. An engine control system for a vehicle , comprising: a driver requests the shutdown of the engine via an ignition system; and', 'when one or more predetermined conditions are satisfied for shutting down the engine without the driver requesting shutdown of the engine via the ignition system; and, 'a shutdown control module that generates a command to shut down an engine of the vehicle when at least one ofa valve control module that, when the command to shut down the engine is generated, advances an exhaust camshaft phaser based on a predetermined exhaust park position,wherein when the exhaust camshaft phaser is in the predetermined exhaust park position, an exhaust valve of a cylinder is fully closed during an exhaust stroke of the cylinder before a piston of the cylinder reaches a topmost position for a next intake stroke of the cylinder.2. The engine control system of further comprising a park pin that extends into an aperture in the camshaft phaser when the exhaust camshaft phaser is in the predetermined exhaust park position and that claim 1 , when extended into the aperture claim 1 , prevents advancement or retardation of the exhaust camshaft ...

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Номер записи: 58
05-01-2017 дата публикации

In-Engine Heating Mode by Increasing Load

Номер: US20170002757A1
Автор: MALISCHEWSKI Thomas, RENNER Dominik
Принадлежит:

An operating method for a device that has an internal combustion engine having a crankshaft and a plurality of cylinders and an exhaust gas aftertreatment system. The operating method is distinguished, in particular, by the fact that fuel injection into at least one of the cylinders is shut down when required and the at least one shut-down cylinder is put into a braking mode, with the result that the temperature of the exhaust gas for the exhaust gas aftertreatment system can be increased. 1. An operating method for a device having an internal combustion engine having a crankshaft and a plurality of cylinders and an exhaust gas aftertreatment system , comprising:shutting down fuel injection into at least one of the plurality of cylinders when required; andputting the at least one shut-down cylinder into a braking mode,wherein an exhaust gas temperature for the exhaust gas aftertreatment system is increased.2. The operating method according to claim 1 , wherein a demanded crankshaft torque is produced by at least one firing cylinder.3. The operating method according to claim 2 ,wherein the at least one cylinder that has been put into the braking mode performs negative work, andwherein the at least one firing cylinder compensates for the negative work.4. The operating method according to claim 1 , wherein control of the exhaust gas temperature for the exhaust gas aftertreatment system is accomplished by shutting down the at least one cylinder.5. The operating method according to claim 1 , wherein control of the exhaust gas temperature for the exhaust gas aftertreatment system is accomplished by putting the at least one shut-down cylinder into the braking mode.6. The operating method according to claim 1 , wherein the operating method represents an in-engine heating mode for exhaust gas for the exhaust gas aftertreatment system.7. The operating method according to claim 1 , wherein a cam contour device accomplishes at least one of the shutting down the fuel injection ...

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Номер записи: 59
07-01-2016 дата публикации

SYSTEM AND METHOD FOR SELECTIVE CYLINDER DEACTIVATION

Номер: US20160003169A1
Автор: Boyer Brad Alan, Jankovic Mrdjan J., Leone Thomas G.
Принадлежит:

Embodiments for operating an engine with skip fire are provided. In one example, a method comprises during a skip fire mode or during a skip fire mode transition, port injecting a first fuel quantity to a cylinder of an engine, the first fuel quantity based on a first, predicted air charge amount for the cylinder and lean of a desired air-fuel ratio, and direct injecting a second fuel quantity to the cylinder, the second fuel quantity based on the first fuel quantity and a second, calculated air charge amount for the cylinder. 1. A method , comprising:operating an engine according to a skip fire schedule, including activating fuel injection to fire at least one cylinder and deactivating fuel injection to skip at least one cylinder, while maintaining spark ignition to all cylinders; andadjusting the skip fire schedule if combustion is detected in a cylinder with deactivated fuel injection.2. The method of claim 1 , further comprising detecting if combustion occurs in the cylinder with deactivated fuel injection based on feedback from an ionization sensor.3. The method of claim 2 , wherein adjusting the skip fire schedule comprises deactivating fuel injection to another cylinder scheduled to be fired in the skip fire schedule.4. The method of claim 1 , wherein the commanded firing order is based on an original firing order of the engine during a non-skip fire mode claim 1 , the selected number of skipped cylinders claim 1 , and further based on which cylinders of the engine were skipped in a previous engine cycle.5. The method of claim 4 , wherein the at least one cylinder that is skipped follows the at least one cylinder that is fired in the original firing order of the engine.6. The method of claim 1 , further comprising claim 1 , selectively actuating each intake valve and each exhaust valve of the at least one cylinder that is fired claim 1 , and selectively deactivating each intake valve and each exhaust valve of at the least one cylinder that is skipped.7. A ...

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Номер записи: 60
07-01-2016 дата публикации

CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE

Номер: US20160003177A1
Автор: AIKAWA Hidefumi
Принадлежит:

A control apparatus is applied to an internal combustion engine that is capable of implementing reduced-cylinder operation and all-cylinder operation. When the internal combustion engine is stopped during implementation of reduced-cylinder operation, and then the internal combustion engine is restarted in reduced-cylinder operation with the same cylinders as idling cylinders, the initial crank angle when cranking starts is controlled so that the position of the piston of at least one among the idling cylinders is in the vicinity of its top dead center. 1. A control apparatus for an internal combustion engine applied to an internal combustion engine that has a plurality of four or more cylinders and that is capable of implementing both reduced-cylinder operation in which a portion among the plurality of cylinders is idled by stopping their intake valve and their exhaust valve in a closed state while a remaining cylinder operates and all-cylinder operation in which all of the plurality of cylinders operate , and that moreover is started by cranking by an electric motor , the control apparatus comprising a crank angle control device configured to control an initial crank angle when cranking is started by controlling the electric motor ,wherein, when the internal combustion engine is stopped during implementation of the reduced-cylinder operation and then the internal combustion engine is restarted in the reduced-cylinder operation with the same cylinders as idling cylinders, the crank angle control device controls the initial crank angle so that piston position of at least one cylinder among the idling cylinders is in vicinity of its top dead center.2. A control apparatus according to claim 1 , wherein:with the internal combustion engine, during the reduced-cylinder operation, piston positions are the same for the idling cylinders and for working cylinders; andthe crank angle control device controls the initial crank angle so that, when cranking starts, piston ...

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Номер записи: 61
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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Номер записи: 62
04-01-2018 дата публикации

CONTROL OF A ROLLING STOP-START VEHICLE ENGINE

Номер: US20180003143A1
Автор: Awadi Ahmed, Hakeem Mohannad, Khafagy Hafiz Shafeek, KOK Daniel Benjamin, YOUNIS Raed
Принадлежит:

A vehicle includes electric brakes, an engine with a starter, a battery and a controller. The battery has a voltage and is configured to power the starter, the electric brakes, and the controller. The controller is configured to, in response to a speed of the vehicle falling within a specified range without propulsive demand and while the voltage is greater than an upper voltage that varies based on a charge needed to engage the brakes to stop the vehicle, stop the engine. 1. A method of controlling an engine of a vehicle comprising: a speed of the vehicle falling within a specified range in an absence of propulsive demand, and', 'a starter battery voltage being greater than a threshold that varies according to the speed., 'stopping the engine by a controller in response to'}2. The method of claim 1 , wherein the threshold increases as the speed increases.3. The method of claim 1 , wherein the threshold further varies according to an angle of inclination of the vehicle.4. The method of claim 1 , wherein the threshold further varies according to a predicted weight of the vehicle.5. The method of claim 1 , wherein the threshold is indicative of a state of charge of a starter battery.6. The method of claim 5 , wherein the threshold further varies according to a predicted route and a predicted stopping point along the route such that the state of charge of the starter battery is greater than a predicted consumption of vehicle electrical components along the route to the predicted stopping point.7. The method of claim 1 , wherein the specified range has an upper and lower speed point.8. The method of claim 7 , wherein the upper speed point is greater than 40 kilometers per hour and the lower speed point is 5 kilometer per hours.9. The method of claim 1 , wherein the absence of propulsive demand is defined by depression of a brake pedal.10. The method of claim 1 , wherein the absence of propulsive demand is defined by a lack of an external force applied to an accelerator ...

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Номер записи: 63
02-01-2020 дата публикации

ON-DEMAND GENERATOR STARTING SYSTEM

Номер: US20200003134A1
Автор: Berger Jeffrey, Betzhold Philip, Hansen Jason A., Koenen Robert John, VanPatten Dale C.
Принадлежит: Briggs & Stratton Corporation

An on-demand generator starting system and method is disclosed. The generator starting system is included as part of a standby or portable generator that includes one or more outlets that provide electrical power to an electrical device. The operating system includes a generator controller that monitors for a request for power from the electrical device connected to the outlet. When the control circuit of the generator controller determines that electric power is required from the generator, the control circuit initiates operation of the internal combustion engine. After the internal combustion engine starts, the control circuit operates a relay to provide power from the generator to the outlet of the generator. When the electrical device is no longer operating, the control circuit of the generator controller terminates operation of the internal combustion engine of the generator. In this manner, the generator operates only when the electrical device is requesting electrical power. 1. An operating system for a generator having an outlet and an internal combustion engine operable to generate a supply of electrical power to an electrical device connected to the outlet , the system comprising:a control unit;a switching device selectively operable by the control unit to connect one of a first input or a second input to an output, wherein the second input receives the supply of electrical power from the internal combustion engine;an outlet connected to the output of the relay through a power supply line;a current sensing device positioned to detect current flow through the power supply line and communicate to the control circuit;a starter circuit connected to the control unit and operable to initiate starting of the internal combustion engine;a power control circuit connected to the control unit and operable to switch the movable contact of the switching device to selectively connect the output to either the first input or the second input; andan ignition kill circuit ...

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Номер записи: 64
02-01-2020 дата публикации

METHOD AND SYSTEM FOR CHARACTERIZING A PORT FUEL INJECTOR

Номер: US20200003139A1
Автор: Pursifull Ross Dykstra, Uhrich Michael James, Ulrey Joseph Norman
Принадлежит:

Systems and methods for operating an engine that includes one or more fuel injectors are described. The systems and methods may characterize fuel injector operation during a time when injecting fuel may be useful to maintain balance of a catalyst to reduce engine emissions. Further, large or small amounts of fuel may be injected without affecting engine combustion. 116-. (canceled)17. A system , comprising:an engine;a catalyst; anda controller including executable instructions stored in non-transitory memory to correlate a pressure drop in a fuel rail to fuel flow through a fuel injector and adjust air flow of the engine based on an amount of oxygen stored in the catalyst in response to entering deceleration fuel shut-off, and instructions to operate the fuel injector responsive to the correlation.18. The system of claim 17 , further comprising additional instructions to exit deceleration fuel shut-off in response to an increasing driver demand torque.19. The system of claim 17 , further comprising additional instructions to inject fuel to a cylinder of the engine via the fuel injector in response to entering deceleration fuel shut-off.20. The system of claim 17 , further comprising additional instructions to estimate oxygen stored in the catalyst during deceleration fuel shut-off.21. A system claim 17 , comprising:an engine including a fuel rail and a fuel pump;a catalyst; anda controller including executable instructions stored in non-transitory memory to raise a pressure in the fuel rail via the fuel pump and cease operation of the fuel pump in response to entering deceleration fuel shut-off.22. The system of claim 21 , further comprising additional instructions to inject fuel from the fuel rail to a cylinder of the engine claim 21 , correlate a pressure drop in the fuel rail after injecting the fuel to operation of a fuel injector claim 21 , and operate the fuel injector responsive to the correlation.23. The system of claim 22 , further comprising additional ...

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Номер записи: 65
02-01-2020 дата публикации

PRE-TURBINE WIDE-RANGE OXYGEN SENSOR LAMBDA CONTROL DURING SCAVENGING

Номер: US20200003141A1
Автор: Attard William P, Badawy Tamer, White Andrew P, Zhong Lurun
Принадлежит:

A system and method of utilizing a pre-turbine wide-range oxygen (WRO2) sensor during both individual cylinder fuel control (ICFC) and scavenging of a turbocharged engine involve receiving, by a controller and from the WRO2 sensor arranged in an exhaust system of the engine at a point upstream of a turbine of a turbocharger of the engine, an unfiltered WRO2 signal indicative of a fuel/air (FA) ratio of exhaust gas produced by the engine, performing, by the controller, ICFC by controlling the engine using the unfiltered WRO2 signal, performing, by the controller, engine cycle average filtering of the WRO2 signal to obtain a filtered WRO2 signal, and, while the engine is scavenging, performing, by the controller, engine FA ratio and emissions control using the filtered WRO2 signal. 1. A control system for a turbocharged engine configured for scavenging , the control system comprising:a wide-range oxygen (WRO2) sensor arranged in an exhaust system of the engine at a point upstream of a turbine of a turbocharger of the engine and configured to generate an unfiltered WRO2 signal indicative of a fuel/air (FA) ratio of exhaust gas produced by the engine; and perform individual cylinder fuel control (ICFC) by controlling the engine using the unfiltered WRO2 signal;', 'engine cycle average filter the WRO2 signal to obtain a filtered WRO2 signal; and', 'while the engine is scavenging, perform engine FA ratio and emissions control using the filtered WRO2 signal., 'a controller configured to2. The control system of claim 1 , wherein the unfiltered WRO2 signal comprises variations caused by insufficient mixing of the exhaust gas from various cylinders of the engine claim 1 , and wherein the engine cycle average filtering removes or reduces the variations in the unfiltered WRO2 signal to obtain the filtered WRO2 signal.3. The control system of claim 2 , wherein the controller is configured to perform ICFC by associating the variations in the unfiltered WRO2 signal with respective ...

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Номер записи: 66
03-01-2019 дата публикации

Method for Operating a Reciprocating Internal Combustion Engine

Номер: US20190003404A1
Автор: WAGNER Marc Oliver
Принадлежит: DAIMLER AG

A method for operating a reciprocating internal combustion engine in an engine braking mode includes, in a working cycle of the engine braking mode, a first outlet valve of a first cylinder is closed for a first time, then opened for a first time, and subsequently closed for a second time, and then opened for a second time, in order to thereby discharge gas that has been compressed in the first cylinder from the first cylinder by a cylinder piston. The outlet valve is held open after the first opening and prior to the second dosing long enough for the cylinder to be filled with gas that flows out of a second cylinder via at least one outlet channel, where when the engine braking mode is activated, at least one camshaft for activating at least one gas exchange valve of the reciprocating internal combustion engine is adjusted. 111.-. (canceled)12. A method for operating a reciprocating internal combustion engine in an exhaust braking mode , comprising the steps of:in the exhaust braking mode, within one operating cycle of a first cylinder, a first exhaust valve of the first cylinder is closed a first time, subsequently opened a first time, subsequently closed a second time, and subsequently opened a second time, in order to release gas, compressed in the first cylinder by a first piston of the first cylinder, from the first cylinder;wherein following the first opening and before the second closure, the first exhaust valve is kept open for as long as the first cylinder is filled with gas flowing out of a second cylinder of the reciprocating internal combustion engine via an exhaust duct, wherein a camshaft for actuating a gas exchange valve of the reciprocating internal combustion engine is adjusted when the exhaust braking mode is activated.13. The method according to claim 12 , wherein the camshaft is an intake camshaft and wherein via the intake camshaft it is possible to actuate claim 12 , as the gas exchange valve claim 12 , an intake valve that is associated with ...

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Номер записи: 67
03-01-2019 дата публикации

Method and device for operating a drive device, and drive device

Номер: US20190003409A1
Автор: Michael Kiszkiel, Sebastian Ernst, Yinyue Feng
Принадлежит: Audi AG

A method for operating a drive device of a motor vehicle, having an internal combustion engine and at least one switchable mechanism. The mechanism can be switched to change an operating state influencing a fuel consumption and switching causes an increased fuel consumption. It is proposed that a torque and a rotational speed of the internal combustion engine are predicted depending on a current operating situation, that a dwell time of the mechanism in a switching state is predicted depending on the torque and the rotational speed, and that the mechanism for changing the operating state is actuated depending on the dwell time.

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Номер записи: 68
03-01-2019 дата публикации

INTERNAL COMBUSTION ENGINE AND METHOD FOR CONTROLLING SAME

Номер: US20190003410A1
Автор: TSUNODA Hiroshi
Принадлежит: Isuzu Motors Limited

Provided is an internal combustion engine including a control device configured to adjust fuel injection valves and a resting mechanism and thereby executing a control of switching between an all-cylinder operation Oa and a reduced-cylinder operation Or, the all-cylinder operation Oa being an operation in which a combustion cycle is always performed in all of the cylinders and the reduced-cylinder operation Or being an operation in which a combustion cycle is always performed in some cylinders less than a cylinder number Nc, wherein in the reduced-cylinder operation Or, all of the cylinders perform a partial operation in which an operating state and a resting state thereof are repeated. 1. An internal combustion engine comprising:cylinders having a cylinder number of two or more;a plurality of fuel injection valves and a plurality of intake or exhaust valves which are respectively arranged to the two or more cylinders;a valve drive mechanism configured to open and close the intake or exhaust valves;a resting mechanism configured to cancel an action of the valve drive mechanism to maintain the intake or exhaust valves in a closed state; anda control device configured to adjust the fuel injection valves and the resting mechanism and thereby executing a control of switching between an all-cylinder operation and a reduced cylinder operation, the all-cylinder operation being an operation in which a combustion cycle is always performed in all of the cylinders, and the reduced-cylinder operation being an operation in which the combustion cycle is always performed in some cylinders less than the cylinder number,wherein in the reduced-cylinder operation, all of the cylinders perform a partial operation in which an operating state and a resting state thereof are repeated.2. The internal combustion engine according to claim 1 ,wherein the partial operation is an operation in which the operating state, in which fuel is injected by the fuel injection valve and also the intake or ...

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Номер записи: 69
03-01-2019 дата публикации

Dynamic charge compression ignition engine with multiple aftertreatment systems

Номер: US20190003442A1
Автор: Elliot A. ORTIZ-SOTO, Matthew A. Younkins
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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Номер записи: 70
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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Номер записи: 71
12-01-2017 дата публикации

CONTROL APPARATUS FOR VEHICLE

Номер: US20170009668A1
Автор: NISHIDA Hideyuki
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A vehicle having a valve stop mode control unit configured such that an intake valve and an exhaust valve are stopped in a closed state during rotation of an output shaft, supply of fuel to an engine is stopped, a clutch is made to be in an engaged state, and pistons are driven by rotational forces from driving wheels through the output shaft. When there is a request for valve stop inertial running, a negative pressure is supplied to an intake passage by a vacuum pump. 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 of 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 , further comprising:a valve stop mode control unit configured to, in a case where a request for valve stop inertial running is made, stop the intake valve and the exhaust valve in the closed state during the rotation of the output shaft, stop supply of fuel to the engine, control a throttle valve of the engine to an idling opening or less, and set the clutch in an engaged state to drive pistons of the engine by a rotational force of the driving wheel through the output shaft; andan intake pressure control unit configured to, in a case where the request for valve stop inertial running is made, supply a negative pressure to an intake passage section by a vacuum pump connected to the intake passage section.2. The control apparatus for a vehicle according to claim 1 , whereinthe vacuum pump is configured to supply a negative pressure to a brake booster for assisting a brake force of a brake.3. The control apparatus for a vehicle according to claim 1 , whereinthe engine further comprises a vacuum switching valve for opening/closing a connecting conduit that connects the vacuum pump and the intake passage, whereinthe intake ...

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Номер записи: 72
12-01-2017 дата публикации

Multi-level skip fire

Номер: US20170009729A1
Автор: Louis J. Serrano, Matthew A. Younkins
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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Номер записи: 73
27-01-2022 дата публикации

VALVE TRAIN ASSEMBLY

Номер: US20220025790A1
Автор: Campbell Michael J., Cecur Majo, Radulescu Andrei, VanWingerden Mark
Принадлежит:

A type II valve train assembly that selectively opens first and second intake valves and first and second exhaust valves is provided. The valve train assembly includes an intake rocker arm assembly and an exhaust rocker arm assembly. The valve train assembly is configurable for operation in any combination of activated and deactivated states of engine braking and cylinder deactivation. The exhaust rocker arm assembly includes a first exhaust rocker arm, a second exhaust rocker arm and an engine brake exhaust rocker arm. A first exhaust HLA is associated with the first exhaust rocker arm. A second exhaust HLA is associated with the second exhaust valve. An exhaust actuation assembly selectively actuates to alter travel of the first and second exhaust HLA's to change a state of cylinder deactivation between activated and deactivated. 1. A type II valve train assembly that selectively opens first and second intake valves and first and second exhaust valves , the valve train assembly comprising: a first intake rocker arm configured to selectively open the first intake valve, a second intake rocker arm configured to selectively open the second intake valve, and an engine brake intake rocker arm configured to selectively and collectively open both of the first and second intake valves;', 'a first intake hydraulic lash adjuster (HLA) associated with the first intake valve and a second intake HLA associated with the second intake valve;', "an intake actuation assembly configured to selectively actuate to alter travel of the first and second intake HLA's to change a state of cylinder deactivation between activated and deactivated; and"], 'an intake rocker arm assembly, comprising a first exhaust rocker arm configured to selectively open the first exhaust valve, a second exhaust rocker arm configured to selectively open the second exhaust valve, and an engine brake exhaust rocker arm configured to selectively and collectively open both of the first and second exhaust valves ...

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Номер записи: 74
27-01-2022 дата публикации

AMMONIA STORAGE CAPACITY OF SCR CATALYST UNIT

Номер: US20220025799A1
Автор: Meijer Maarten, Ramesh Varun, Swart Charles Wayne Reinhardt, Webb Cynthia Chaffin
Принадлежит:

The present disclosure describes methods for evaluating ammonia storage capacity of a close-coupled SCR unit while remaining compliant with prescribed emissions limits, methods of controlling an emission aftertreatment system including multiple SCR units and emission management systems for a vehicle including an internal combustion engine and an emission aftertreatment system that includes two or more SCR units. 1. A method of evaluating ammonia storage capacity of a selective catalytic reduction (SCR) unit in an emission aftertreatment system (EAS) , the method comprising:operating the EAS at steady state conditions;dosing diesel exhaust fluid, into exhaust gas from the internal combustion engine, upstream of a close-coupled SCR unit;flowing the exhaust gas, into which the diesel exhaust fluid has been dosed, through the close-coupled SCR unit;flowing the exhaust gas from the close-coupled SCR unit through a downstream SCR unit;controlling NOx emissions from the EAS using the downstream SCR unit;terminating the dosing of diesel exhaust fluid into the flowing exhaust gas upstream of the close-coupled SCR unit;depleting ammonia stored in the close-coupled SCR unit;restarting the dosing of diesel exhaust fluid into the flowing exhaust gas upstream of the close-coupled SCR unit;reloading the close-coupled SCR unit with ammonia;determining the close-coupled SCR unit has reached a maximum ammonia loading; andupon determining the close-coupled SCR unit has reached the threshold ammonia loading, determine (1) an amount of ammonia loaded in the close-coupled SCR unit after restarting dosing of diesel exhaust fluid into the flowing exhaust gas upstream of the close-coupled SCR unit, (2) an amount of ammonia used for NOx conversion in the close-coupled SCR unit after restarting dosing of diesel exhaust fluid into the flowing exhaust gas close-coupled of the close-coupled SCR unit and (3) an amount of ammonia oxidized in the SCR unit after restarting dosing of diesel exhaust ...

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Номер записи: 75
14-01-2016 дата публикации

Oil supply device for engine

Номер: US20160010519A1
Автор: Hisashi Okazawa, Masanori Hashimoto
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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Номер записи: 76
14-01-2016 дата публикации

SELECTIVELY DEACTIVATABLE ENGINE CYLINDER

Номер: US20160010568A1
Автор: Haynes Neil, Whiston Phil John
Принадлежит:

An engine comprising: one or more multi-valve cylinders, each multi-valve cylinder having a plurality of intake valves and/or a plurality of exhaust valves; and one or more further cylinders, each further cylinder having fewer intake valves and/or fewer exhaust valves than each multi-valve cylinder, wherein a cylinder deactivation system of the engine is configured to selectively deactivate at least one further cylinder. 1. An engine comprising:one or more multi-valve cylinders each having a plurality of intake valves and/or a plurality of exhaust valves; andone or more further cylinders each having fewer intake valves and/or fewer exhaust valves than each multi-valve cylinder, wherein a cylinder deactivation system of the engine is configured to selectively deactivate at least one of each further cylinder.2. The engine according to claim 1 , wherein a valve lift height of at least one intake valve and/or at least one exhaust valve of at least one of each further cylinder is greater than that of the plurality of intake valves and/or the plurality of exhaust valves of the one or more multi-valve cylinders.3. The engine according to claim 1 , wherein at least one intake valve and/or at least one exhaust valve of the or at least one of each further cylinder is larger than the plurality of intake valves and/or the plurality of exhaust valves of the one or more multi-valve cylinders.4. The engine according to claim 1 , wherein the cylinder deactivation system is configured to selectively deactivate at least one of the one or more multi-valve cylinders.5. The engine according to claim 1 , wherein the cylinder deactivation system comprises one or more switchable roller finger followers or one or more collapsible lash adjusters.6. The engine according to claim 1 , wherein each multi-valve cylinder comprises two intake valves.7. The engine according to claim 1 , wherein each multi-valve cylinder comprises two exhaust valves.8. The engine according to claim 1 , wherein each ...

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Номер записи: 77
09-01-2020 дата публикации

CONTROL DEVICE FOR CONTROLLING VEHICLE, METHOD FOR CONTROLLING VEHICLE, AND STORAGE MEDIUM

Номер: US20200009963A1
Автор: Fujiwara Takao
Принадлежит:

A control device that controls a vehicle obtains information of a user of the vehicle, and controls, based on the information of the user, output of the vehicle on a per-user basis. 1. A control device for controlling a vehicle , comprising:an obtaining unit configured to obtain information of a user of the vehicle; anda control unit configured to, based on the information of the user, control output regarding travelling of the vehicle and not regarding presentation of information to the user on a per-user basis.2. The control device according to claim 1 , whereinthe information of the user includes information of a nationality or a place of residence of the user.3. The control device according to claim 2 , whereinthe control unit determines, based on the information of the nationality or the place of residence, a language used on a presentation unit configured to present information to the user in the vehicle, and controls the presentation unit to perform at least one of screen output and audio output using the language.4. The control device according to claim 1 , whereinthe information of the user includes information related to a driver's license held by the user.5. The control device according to claim 4 , whereinbased on the information of the driver's license, the control unit controls engine displacement or motor output of the vehicle.6. The control device according to claim 4 , whereinbased on the information of the driver's license, the control unit controls a color that illuminates a license plate of the vehicle.7. The control device according to claim 1 , whereinthe control device is a device that exists outside the vehicle, andthe control device further comprises a communication unit configured to communicate with the vehicle.8. The control device according to claim 7 , whereinthe obtaining unit obtains the information of the user via the communication unit.9. The control device according to claim 7 , whereinthe control unit controls the vehicle by ...

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Номер записи: 78
11-01-2018 дата публикации

Method and system for controlling supercharger of vehicle

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

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

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Номер записи: 79
14-01-2021 дата публикации

VARIABLE VALVE APPARATUS

Номер: US20210010397A1
Автор: BACK You-Seok, Choi Myung Sik
Принадлежит:

A variable valve apparatus includes: a swing body mounted to rotate to open and close a valve; an inner body driven by a cam and mounted in the swing body so as to switch a relatively-rotatable state and a latched state with respect to the swing body; a latching pin slidably mounted in the swing body so as to switch the latched state and the relatively-rotatable state of the inner body with respect to the swing body; and a control mechanism pressing the latching pin to make the inner body be latched to the swing body. 1. A variable valve apparatus comprising:a swing body mounted to rotate to open and close a valve;an inner body driven by a cam and mounted in the swing body so as to switch between a relatively-rotatable state and a latched state with respect to the swing body;a latching pin slidably mounted in the swing body so as to switch between the latched state and the relatively-rotatable state of the inner body with respect to the swing body; anda control mechanism pressing the latching pin to make the inner body be latched to the swing body.2. The variable valve apparatus of claim 1 , wherein a lower portion of a first side of the swing body is spherically supported by a supporting member claim 1 , and a lower portion of a second side of the swing body is in contact with a stem end of the valve claim 1 , such that the swing body rotates with respect to the supporting member to open and close the valve.3. The variable valve apparatus of claim 1 , wherein the inner body is mounted rotatably with respect to the swing body around a rotation axis parallel to a rotation axis of the swing body claim 1 , andan inner roller is rotatably mounted while keeping a state of being in contact with the cam to receive movement of the cam.4. The variable valve apparatus of claim 3 , wherein an inner spring is mounted between the inner body and the swing body to elastically support the inner roller of the inner body toward the cam claim 3 , anda swing roller is mounted in the ...

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Номер записи: 80
14-01-2021 дата публикации

Method for sequential turbo control

Номер: US20210010411A1
Автор: Arvind Sivasubramanian, Eric Schroeder, Kevin Sergott, Liangtao Zhu, Shivangi Wagle, Travis Barnes
Принадлежит: Caterpillar Inc

A method for controlling and engine system with a plurality of turbochargers. At least one of the plurality of turbochargers has a turbine valve, a compressor valve, and actuators operable to change the position of the turbine valve. The method comprises controlling the actuator based on the presence of a transient event or a steady state event. During a transient event an engine control module can control the actuators to change the turbine valve to opened and closed positions and the turbine valve to a closed position based on the comparison between a corrected mass flow per turbocharger to a mass flow threshold.

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Номер записи: 81
10-01-2019 дата публикации

ROCKER ARM ASSEMBLY

Номер: US20190010835A1
Автор: Bishnoi Kshamta, JR. James E., McCarthy, Nielsen Douglas J.
Принадлежит: EATON CORPORATION

A combined exhaust and engine brake rocker arm assembly configured to selectively open first and second exhaust valves, includes a rocker arm body, an exhaust rocker arm assembly formed in the rocker arm body, and an engine brake rocker arm assembly formed in the rocker arm body and configured to operate in a collapse mode and a rigid mode. The exhaust rocker arm assembly is configured to selectively engage a valve bridge to open the first and second exhaust valves, and the engine brake rocker arm assembly is configured to selectively engage the valve bridge to open only the first exhaust valve. 111-. (canceled)12. The valve train assembly of claim 18 , wherein the exhaust rocker arm assembly comprises an exhaust capsule assembly disposed in a bore formed in the rocker arm body claim 18 ,wherein the exhaust capsule assembly comprises a plunger assembly and a stopper, the plunger assembly including a first plunger body and a second plunger body, wherein a chamber is defined between the first and second plunger bodies configured to receive a supply of fluid.13. The valve train assembly of claim 12 , wherein the stopper includes an annular bore formed therein claim 12 , and a lost motion biasing mechanism is at least partially disposed in the annular bore claim 12 , the lost motion biasing mechanism configured to bias the stopper and the plunger assembly away from an upper wall of the bore.14. The valve train assembly of claim 13 , wherein the stopper includes an annular groove formed therein claim 13 , the annular groove configured to selectively align with a fluid port fluidly coupled to the engine brake rocker arm assembly.15. The valve train assembly of claim 18 , wherein the engine brake rocker arm assembly comprises a brake capsule assembly disposed in a bore formed in the rocker arm claim 18 ,wherein the bore comprises a first bore and a second bore formed in the rocker arm, the brake capsule assembly comprising a brake plunger assembly disposed in the first ...

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Номер записи: 82
10-01-2019 дата публикации

CAM-SWITCHING DEVICE AND METHOD OF CONTROLLING CAM-SWITCHING DEVICE

Номер: US20190010839A1
Автор: TSUNODA Hiroshi
Принадлежит: Isuzu Motors Limited

A cam-switching device switches between first and second cams provided so as to correspond to intake exhaust valves of an engine. In a case of switching from the first cam to the second cam, a cylinder resting unit stops the opening and closing operations of the intake and exhaust valves in the same combustion cycle, and a cam shaft moving unit starts sliding the cam shaft in a first cam angle range. In a case of switching from the second cam to the first cam, the cylinder resting unit stops the opening and closing operations of the intake and exhaust valves in the same combustion cycle, and the cam shaft moving unit starts sliding the cam shaft in a second cam angle range. 1. A cam-switching device that selectively switches between a first cam and a second cam to make valve characteristics of intake and exhaust valves of an engine variable ,the first cam and the second cam being provided corresponding to each of the intake and exhaust valves and having different cam profiles,each of the cam profiles being determined such that a first cam angle range where a valve lift amount of the first cam is greater than a valve lift amount of the second cam and a second cam angle range where a valve lift amount of the second cam is greater than a valve lift amount of the first cam are formed, andthe cam-switching device comprising:a cam shaft configured to rotate in conjunction with a crank shaft of the engine and provided such that the first cam and the second cam are rotatable together;a cam shaft moving unit configured to slide the cam shaft in an axis direction to selectively switch between the first cam and the second cam;a cylinder resting unit configured to stop opening and closing operations of the intake and exhaust valves to make a cylinder restable; anda cam shaft moving control unit configured to control the cylinder resting unit to stop the opening and closing operations of the intake and exhaust valves in the same combustion cycle and control the cam shaft moving ...

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Номер записи: 83
10-01-2019 дата публикации

Valve Train Device, Internal Combustion Engine Comprising a Valve Train Device and Method for Operating a Valve Train Device

Номер: US20190010840A1
Автор: LAHR Matthias
Принадлежит: DAIMIER AG

A valve train device includes a camshaft, a first valve actuating unit for actuating at least one first gas exchange valve, and a second valve actuating unit for actuating at least one second gas exchange valve. The first valve actuating unit has at least one first release element connected to the camshaft for conjoint rotation and the second valve actuating unit has at least one second release element connected to the camshaft for conjoint rotation. The release elements are coupled to each other. 110.-. (canceled)11. A valve rain device , comprising:a camshaft;a first valve actuating unit for actuating a first gas exchange valve, wherein the first valve actuating unit is provided to convert a rotary motion of the camshaft into a first force for switching between two first different cam followers associated with the first gas exchange valve and wherein the first valve actuating unit has a first release element connected to the camshaft for conjoint rotation;a second valve actuating unit for actuating a second gas exchange valve, wherein the second valve actuating unit is provided to convert the rotary motion of the camshaft into a second force for switching between two second different cam followers associated with the second gas exchange valve and wherein the second valve actuating unit has a second release element connected to the camshaft for conjoint rotation;wherein the first and the second release elements are coupled to each other;a first switch rod, wherein the first switch rod is connected to the camshaft for conjoint rotation in an axially movable way and wherein the first and the second release elements are coupled to the first switch rod; anda second switch rod, wherein the second switch rod is connected to the camshaft for conjoint rotation in an axially movable way and wherein a further release element is coupled to the second switch rod.12. The valve train device of claim 11 , wherein the first and the second release elements are disposed with a phase ...

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Номер записи: 84
09-01-2020 дата публикации

CONTROL DEVICE FOR ENGINE

Номер: US20200011253A1
Автор: CHABATA Souichirou, Nakai Takano, Nishio Takafumi, Okugawa Takaya
Принадлежит: MAZDA MOTOR CORPORATION

A control device for an engine includes a valve-stopping mechanism which holds intake and exhaust valves of the first and the fourth cylinders (idle cylinders) of four cylinders in closed states, a throttle valve control unit , an ignition period control unit , and an ECU which controls the valve-stopping mechanism , the throttle valve control unit , and the ignition period control unit . The ECU sets a retard amount of the ignition period of the idle cylinder behind the basic ignition period at least in starting the all-cylinder operation in accordance with an amount of burned gas existing in the idle cylinder in switching to the all-cylinder operation from the reduced-cylinder operation. 1. A control device for an engine , the control device comprising:a valve-stopping mechanism that holds an intake valve and an exhaust valve of at least an idle cylinder in a closed state in a reduced-cylinder operation, the control device being applicable to the engine including a plurality of cylinders and an exhaust passage through which exhaust gas exhausted from the cylinders flows, the control device being configured to selectively execute the reduced-cylinder operation by setting at least one of the plurality of cylinders as the idle cylinder to be brought into an idle state, and an all-cylinder operation for operating all the cylinders;an air amount adjustment unit that adjusts an amount of air to be supplied to the cylinders;an ignition period adjustment unit that adjusts each ignition period of the cylinders; and set a basic ignition period as a basic value of the ignition period of each of the cylinders based on an engine speed and an engine load;', 'upon establishment of a switching condition from the all-cylinder operation to the reduced-cylinder operation, execute an air amount increasing control for increasing the air amount of each of the cylinders using the air amount adjustment unit, and control the valve-stopping mechanism to hold the intake valve and the ...

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Номер записи: 85
09-01-2020 дата публикации

CYLINDER DEACTIVATION AND ENGINE BRAKING FOR THERMAL MANAGEMENT

Номер: US20200011257A1
Автор: Jr. James E, McCarthy, STRETCH Dale Arden
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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Номер записи: 86
09-01-2020 дата публикации

CONTROL STRATEGY FOR AUTOMATIC SHUTDOWN OF ENGINE

Номер: US20200011258A1
Автор: BEEKER Jesse, Schwulst Kyle E. E.
Принадлежит:

A system is provided for automatically shutting down an engine in response to the engine operating while in an enclosed space to prevent dangers associated with carbon monoxide accumulating in the enclosed space. The engine has an oxygen sensor in its exhaust that is configured to detect oxygen in the exhaust or ambient. A controller can be programmed to shut down the engine based on a determination that the engine is operating in a confined or enclosed space by analyzing a rate of change of the oxygen content in the exhaust or ambient, and compares the rate to a threshold. The shutdown may be commanded if the rate exceeds the threshold. In some embodiments, the shutdown may additionally be in response to a temperature of the ambient air or intake air increasing, which furthers the confidence of the determination that the engine is operating in a confined or enclosed space. 1. A system for automatically shutting down an engine , the system comprising:an internal combustion engine having an intake passage configured to transfer an intake, a combustion chamber, and an exhaust passage selectively coupled to the combustion chamber and configured to transfer an exhaust after combustion within the combustion chamber to an ambient;an oxygen sensor configured to output a first signal indicating an oxygen content of the exhaust;a temperature sensor configured to output a second signal indicating a temperature of the intake or the ambient; and estimate a size of a room in which the engine is located based on changes in the first signal and the second signal over time, and', 'shut down the engine based on the estimated size of the room., 'a controller programmed to'}2. The system of claim 1 , wherein the controller is programmed to estimate the size of the room based on a rate of change of the first signal over time.3. The system of claim 1 , wherein the controller is programmed to estimate the size of the room based on a rate of change of the second signal over time.4. The ...

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Номер записи: 87
03-02-2022 дата публикации

SELF-CONTAINED COMPRESSION BRAKE CONTROL MODULE FOR COMPRESSION-RELEASE BRAKE SYSTEM OF AN INTERNAL COMBUSTION ENGINE

Номер: US20220034266A1
Автор: BATCHELLER Devin, STEC Peter, TAYLOR Kody
Принадлежит:

A compression-release brake system for operating an exhaust valve of an engine during an engine braking operation. The compression-release brake system comprises a self-contained compression brake control module (CBCM) operatively coupled to the exhaust valve for controlling a lift and a phase angle thereof. The CBCM includes a casing defining an actuator cavity, a actuation piston disposed outside the casing so as to define an actuation piston cavity between the casing and the actuation piston, and a check valve provided between the actuation piston cavity and a compression brake actuator disposed in the actuator cavity. The actuation piston reciprocates relative to the casing. The compression brake actuator includes an actuator element and a biasing spring. The actuator element selectively engages the check valve when deactivated so as to unlock the actuation piston cavity and disengages from the check valve when activated so as to lock the actuation piston cavity. 1. A compression brake control module , in a compression-release brake system for operating at least one exhaust valve of an internal combustion engine during a compression-release engine braking operation , the compression brake control module operatively coupled to at least one exhaust valve for controlling a lift and a phase angle of said at least one exhaust valve , so as to maintain the at least one exhaust valve open during a compression stroke of the engine when the engine performs a compression-release engine braking operation , the compression brake control module comprising:a casing including a single-piece body, adapted for mounting within and fixedly engaging a bore within said engine, said casing including an internal actuator cavity;an actuation piston disposed outside the casing and within said bore so as to define a variable volume hydraulic actuation piston cavity between the casing and the actuation piston and an inner surface of said bore, the actuation piston reciprocating relative ...

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Номер записи: 88
03-02-2022 дата публикации

METHODS AND SYSTEM FOR INHIBITING AUTOMATIC ENGINE STOPPING

Номер: US20220034288A1
Автор: Doering Jeffrey Allen, Meyer Jason, Rollinger John Eric
Принадлежит:

A method and system for operating a vehicle that includes a plurality of engine starting devices and an internal combustion engine is described. In one example, the method determines whether or not to inhibit automatic engine stopping so that a lifespan of an engine starting device may be extended. In one example, the inhibiting is based on a ratio of an actual total number of engine starts generated via the engine starting device to an actual total distance traveled by the vehicle since the engine starting device was installed. 1. A method for operating a vehicle , comprising:inhibiting an automatic engine pull-down via a controller based on a minimum engine running time for enabling automatic engine pull-down and based on a minimum vehicle travel distance for enabling automatic engine pull-down.2. The method of claim 1 , further comprising cranking an engine via one of a plurality of engine starting devices.3. The method of claim 1 , where inhibiting the automatic engine pull-down is further based on an amount of continuous engine run time since an engine most recently stopped being less than the minimum engine running time for enabling automatic engine pull-down.4. The method of claim 1 , where inhibiting the automatic engine pull-down is further based on an actual total distance traveled by a vehicle since an engine began continuously running after the engine most recently stopped being less than the minimum vehicle travel distance for enabling automatic engine pull-down.5. The method of claim 1 , further comprising requesting the automatic engine pull-down in response to vehicle operating conditions.6. The method of claim 5 , where the vehicle operating conditions include vehicle speed and brake pedal position.7. The method of claim 1 , where the automatic engine pull-down includes ceasing fuel delivery to an engine.8. A vehicle system claim 1 , comprising:an internal combustion engine;a plurality of engine starting devices; anda controller including executable ...

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Номер записи: 89
21-01-2016 дата публикации

Bias mechanisms for a rocker arm and lost motion component of a valve bridge

Номер: US20160017765A1
Автор: G. Michael GRON, Justin Baltrucki
Принадлежит: Jacobs Vehicle Systems Inc

Systems for actuating at least two engine comprise a valve bridge operatively connected to the at least two engine valves and having a hydraulically-actuated lost motion component. A rocker arm has a motion receiving end configured to receive valve actuation motions from a valve actuation motion source and a motion imparting end for conveying the valve actuation motions and hydraulic fluid to the lost motion component. The motion receiving end is biased toward the valve actuation motion source. A bias mechanism, supported by either the rocker arm, valve bridge or both, is configured to bias the motion receiving end of the rocker arm and the lost motion component into contact with each other. By maintaining such contact, the bias mechanism helps maintain the supply of hydraulic fluid from the rocker arm to the lost motion component.

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Номер записи: 90
21-01-2016 дата публикации

Skip-Fire Fuel Injection System and Method

Номер: US20160017824A1
Автор: Thompson Jeffrey J., Touchette Alain M.J.
Принадлежит:

A cycle-by-cycle skip-fire fuel-injection technique for pilot-ignited engines involve skip-firing selected combustion chambers when a low load condition is determined and modulating the fuel delivery to maintain the requisite engine power, while reducing pilot fuel quantity to a predetermined minimum. Overall pilot fuel consumption is thereby reduced.

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Номер записи: 91
18-01-2018 дата публикации

APPARATUS AND METHOD FOR PREVENTING OVERFLOW OF FUEL FROM VEHICLE FUEL TANK

Номер: US20180017009A1
Автор: KIM Keun Soo, Lee Seung Kyun, PARK Chang Han, PARK Chang Jun, Park June Young
Принадлежит: HYUNDAI MOTOR COMPANY

An apparatus and a method for preventing overflow of fuel from a vehicle fuel tank are provided may prevent liquid fuel from overflowing into a canister by for a predetermined time storing liquid fuel, which overflows from a fuel tank through a vent valve while the vehicle is traveling, in a fuel overflow prevention chamber, and by returning the fuel in the fuel overflow prevention chamber to the fuel tank by driving a fuel pump in a reverse direction when an engine is turned off. 1. An apparatus for preventing overflow of fuel from a fuel tank , comprising:a fuel overflow prevention chamber configured to store liquid fuel leaking through a vent valve mounted to the fuel tank while a vehicle travels; anda fuel pump driven in a reverse direction for a predetermined time when an engine is turned off, to collect the liquid fuel stored in the fuel overflow prevention chamber.2. The apparatus of claim 1 , wherein the vent valve is connected with a vent line through which fuel evaporation gas generated in the fuel tank flows to a canister claim 1 , and the fuel overflow prevention chamber is connected to a central portion of the vent line to fluidically-communicate therewith.3. The apparatus of claim 1 , wherein a return line is mounted between the fuel overflow prevention chamber and the fuel pump to return the fuel from the fuel overflow prevention chamber to the fuel tank when the fuel pump is driven in the reverse direction.4. The apparatus of claim 3 , wherein a reverse check valve is mounted in the return line to prevent the fuel in the fuel tank from flowing into the fuel overflow prevention chamber when the fuel pump is driven in a forward direction.5. The apparatus of claim 1 , wherein a forward check valve is mounted in a discharge port of the fuel pump to prevent a fuel remaining in a feed line claim 1 , mounted between the fuel pump and the engine claim 1 , from flowing into the fuel tank when the fuel pump is driven in the reverse direction.6. A method of ...

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Номер записи: 92
15-01-2015 дата публикации

Method of inferring start-up misfires due to the build-up of ice and melt water in the intake system of a vehicle engine

Номер: US20150019107A1
Автор: Craig Alan Smith, Gregory Joseph Pawlak, Joseph Patrick Whitehead, Robert Sarow Baskins, Timothy Robert Gernant
Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

Methods are provided for determining ice formation during cruising under cold weather conditions at the intake manifold or throttle body of an engine system and for enabling engine misfire diagnostics upon detection of dissipation of the formed ice.

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Номер записи: 93
17-04-2014 дата публикации

SYSTEM AND METHOD FOR CONTROLLING A FIRING PATTERN OF AN ENGINE TO REDUCE VIBRATION WHEN CYLINDERS OF THE ENGINE ARE DEACTIVATED

Номер: US20140102411A1
Автор: Brennan Daniel G.
Принадлежит:

A system according to the principles of the present disclosure includes a vibration characteristics module and a firing pattern module. The vibration characteristics module, for a first plurality of firing patterns of an engine when a cylinder of the engine is deactivated, stores vibration characteristics associated with at least one of an amplitude, a frequency, and a phase of vibration at a driver interface component resulting from the first plurality of firing patterns. The firing pattern module selects a firing pattern from a second plurality of firing patterns and executes the firing pattern when the vibration characteristics associated with the selected firing pattern satisfies predetermined criteria. 1. A system comprising:a vibration characteristics module that, for a first plurality of firing patterns of an engine when a cylinder of the engine is deactivated, stores vibration characteristics associated with at least one of an amplitude, a frequency, and a phase of vibration at a driver interface component resulting from the first plurality of firing patterns; anda firing pattern module that selects a firing pattern from a second plurality of firing patterns and that executes the firing pattern when the vibration characteristics associated with the selected firing pattern satisfies predetermined criteria.2. The system of wherein the firing pattern module randomly selects the selected firing pattern from the plurality of firing patterns.3. The system of wherein the second plurality of firing pattern includes those of the first plurality of firing patterns that include a sufficient number of firing events to satisfy a driver torque request.4. The system of where the vibration characteristics module designates as a desired firing pattern those of the plurality of firing patterns that satisfy the predetermined criteria.5. The system of wherein the firing pattern module executes the selected firing pattern when the selected firing pattern is designated as a ...

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Номер записи: 94
21-01-2021 дата публикации

SYSTEM AND METHOD FOR AVOIDING COMPRESSOR SURGE DURING CYLINDER DEACTIVATION OF A DIESEL ENGINE

Номер: US20210017922A1
Автор: JR. James E., McCarthy, Odstrcil Troy E., Shaver Gregory M., Taylor Alexander H.
Принадлежит:

A system and method for improving the functioning of a turbocharged diesel engine equipped with a cylinder deactivation system includes detecting when the turbocharged diesel engine is at risk of compressor surge, and then delaying the implementation of the cylinder deactivation. The delay may be a set period of time, or it may be determined by performing a set of instructions effective for estimating changes in intake manifold pressures over time if cylinders are deactivated, and then comparing the intake manifold pressure estimates to acceptable intake manifold pressure information. A formula for performing the required estimates is provided. 1. A method for improving the functioning of a turbocharged diesel engine equipped with a cylinder deactivation system , the method comprising detecting when the turbocharged diesel engine is at risk of compressor surge , and then delaying part or all of the cylinder deactivation until risk of compressor surge is not indicated.2. A method according to wherein said detecting is accomplished by calculating estimates of changes in intake manifold pressure for specific CDA conditions claim 1 , and then comparing those estimates to the compressor surge line for the engine to determine whether deactivation of one or more cylinders will avoid compressor surge.3. A method according to wherein the method further includes moving into cylinder deactivation as quickly as possible while avoiding compressor surge.5. A method according to wherein the engine cylinder deactivation occurs as a series of individual cylinder deactivations until an appropriate number of engine cylinders have been deactivated.6. A method according to wherein the method comprises:detecting when the turbocharged diesel engine is at risk of compressor surge by calculating a first set of estimates of changes in intake manifold pressures over time;comparing the first set of estimates to information regarding the compressor surge conditions of the engine to determine ...

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Номер записи: 95
16-01-2020 дата публикации

SYSTEMS AND METHODS FOR COMBINED ENGINE BRAKING AND LOST MOTION EXHAUST VALVE OPENING

Номер: US20200018243A1
Автор: BALTRUCKI Justin D., FERREIRA David M.
Принадлежит:

A combined dedicated braking and EEVO lost motion valve actuation systems for internal combustion engines provide subsystems for braking events and EEVO events on one or more cylinders. Various control strategies may utilize braking and EEVO capabilities to module one or more engine parameters, including aftertreatment temperature and engine load. 1. In an internal combustion engine having at least one cylinder and at least one respective exhaust valve associated with the at least one cylinder , a system for controlling motion of the at least one exhaust valve , comprising:a main event motion source associated with each of the at least one cylinder for providing main event motion to the respective at least one exhaust valve;an early exhaust valve opening (EEVO) motion source associated with each of the at least one cylinder for providing EEVO motion to the associated at least one exhaust valve;a main event valve train associated with each of the at least one cylinder for conveying main event motion and EEVO motion to the associated at least one exhaust valve;an EEVO lost motion component in at least one of the main event valve trains and adapted to absorb EEVO motion from the EEVO motion source in a first operational mode and adapted to convey EEVO motion from the EEVO motion source in a second operational mode;a braking motion source, separate from the main event motion source, associated with each of the at least one cylinder for providing braking event motion to the associated at least one exhaust valve; anda braking event valve train, separate from the main event valve train, associated with each of the at least one cylinder for conveying braking motion from the braking motion source to the associated at least one exhaust valve.2. The system of claim 1 , wherein the EEVO lost motion component comprises a valve bridge and a piston slidably disposed in the valve bridge.3. The system of claim 1 , wherein the main event motion source and the EEVO motion source ...

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Номер записи: 96
16-01-2020 дата публикации

VACUUM AND COMPRESSION RELEASE BRAKING IN SPARK-IGNITED ENGINES

Номер: US20200018244A1
Автор: Cecil Adam C., Dale Adrian P., Geckler Samuel C., Kolhouse J. Steven, Perfetto Anthony Kyle, Schultz Ryan Edward, Shambhav Anshul, Stroh David J., YONUSHONIS THOMAS M.
Принадлежит:

An internal combustion engine system includes an engine with a plurality of pistons housed in respective ones of a plurality of cylinders, an air intake system to provide air to the plurality of cylinders through respective ones of a plurality of intake valves, an exhaust system to release exhaust gas from the plurality of cylinders through respective one of a plurality of exhaust valves. The internal combustion engine uses vacuum braking and/or compression release braking in response to one or more braking conditions. 1. A method , comprising:operating a spark-ignited internal combustion engine system including an internal combustion engine with a plurality of cylinders that receive an intake flow that is provided to at least a portion of the plurality of cylinders through an open intake throttle;closing the intake throttle to operate in a vacuum braking mode in response to a braking condition; andadjusting at least an exhaust valve opening and closing timing of one or more of the plurality of cylinders to operate in a compression release braking mode in response to the braking condition.2. The method of claim 1 , further comprising opening the intake throttle after closing the intake throttle to transition from the vacuum braking mode to the compression release braking mode.3. The method of claim 1 , wherein the compression release braking mode is initiated in response to an engine braking request.4. The method of claim 3 , wherein the engine braking request is provided by at least one of:a driver input; andan accident avoidance system request.5. The method of claim 1 , further comprising disabling the compression release braking mode in response to one or more of an anti-lock braking event and a weather event.6. The method of claim 1 , further comprising initiating the compression release braking mode to ventilate one or more of the intake manifold claim 1 , a combustion chamber of one or more of the plurality of the cylinders claim 1 , and an aftertreatment ...

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Номер записи: 97
16-01-2020 дата публикации

DECELERATION CYLINDER CUTOFF SYSTEM INCLUDING SMART PHASER

Номер: US20200018251A1
Автор: Kromrey Chad D., Picot Nathan M.
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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Номер записи: 98
16-01-2020 дата публикации

METHOD FOR REGENERATING AN OTTO PARTICLE FILTER OF AN INTERNAL COMBUSTION ENGINE OF A VEHICLE

Номер: US20200018252A1
Автор: Langegger Michael, Reinhardt Michael
Принадлежит:

A method for regenerating an Otto particle filter of an internal combustion engine of a vehicle includes identifying a loading state of the Otto particle filter above a regeneration threshold and operating the internal combustion engine in a heating mode for the purposes of heating the Otto particle filter to a temperature threshold. The method further includes switching a first cylinder of the internal combustion engine from a fuel supply to an air supply, and continuing to operate at least one further cylinder of the internal combustion engine with the fuel supply. 1. A method for regenerating an Otto particle filter of an internal combustion engine of a vehicle , the method comprising:identifying a loading state of the Otto particle filter above a regeneration threshold,operating the internal combustion engine in a heating mode for the purposes of heating the Otto particle filter to a temperature threshold,switching a first cylinder of the internal combustion engine from a fuel supply to an air supply; andcontinuing to operate at least one further cylinder of the internal combustion engine with the fuel supply.2. The method as claimed in claim 1 , wherein in the heating mode of the internal combustion engine claim 1 , at least one of the following measures is implemented:adjustment of a camshaft,adaptation of a fuel injection,adaptation of an ignition angle during the fuel injection,dethrottling of the internal combustion engine, andclosure of an exhaust-gas flap.3. The method as claimed in claim 1 , wherein the heating mode of the internal combustion engine is maintained after the temperature threshold has been reached.4. The method as claimed in claim 1 , wherein the internal combustion engine is operated with increased engine rotational speed after the temperature threshold has been reached.5. The method as claimed in claim 1 , wherein claim 1 , after switching of the first cylinder to an air supply claim 1 , the at least one further cylinder is operated with ...

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Номер записи: 99
28-01-2016 дата публикации

COMPRESSION RELIEF BRAKE RESET MECHANISM

Номер: US20160025018A1
Автор: Gustafson Richard J., Lynch Bradford L.
Принадлежит:

An internal combustion engine with a braking system comprising a rocker lever, a rocker lever valve and a biasing member selectively preventing contact between a brake lift portion of a cam and a cam follower supported by the rocker lever. Fluid pressures in a first fluid circuit and a second fluid circuit selectively actuate the rocker lever valve to open an exhaust valve and cause brake events. 1. A method of braking using an internal combustion engine , the method comprising:starting the internal combustion engine, the internal combustion engine including a cylinder, a cam having a brake lift portion, and a pivotally mounted rocker lever supporting a cam follower and a slave piston, the rocker lever including a first fluid circuit, a second fluid circuit and a rocker lever valve along the second fluid circuit;applying a first fluid pressure to the first fluid circuit to open the rocker lever valve;applying a biasing force to the rocker lever to prevent contact between the cam follower and the brake lift portion of the cam; applying a brake mode fluid pressure to a fluid in the second fluid circuit to extend the slave piston to an extended position; and', 'contacting the cam follower with the brake lift portion of the cam to open an exhaust valve in the cylinder of the internal combustion engine and cause a brake event., 'engaging a brake mode, and while in the brake mode2. A method as in claim 1 , the internal combustion engine further comprising a biasing member connected to a supporting element of the internal combustion engine and applying the biasing force to the rocker lever claim 1 , wherein extension the slave piston collapses the biasing member to enable the cam follower to engage a base portion of the cam.3. A method as in claim 1 , further comprising changing a balance of fluid pressures on the rocker lever valve to actuate the rocker lever valve.4. A method as in claim 3 , wherein the second fluid circuit includes a low pressure circuit fluidly ...

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Номер записи: 100