With Exhaust Gas Recirculation Patents (Class 60/605.2)
  • Patent number: 10767603
    Abstract: An attaching structure for a motor vehicle includes a cylinder head; an EGR valve arranged adjacent to the cylinder head; a bracket including a first portion attached to the cylinder head, a second portion attached to the EGR valve, and a low rigidity portion arranged between the first portion and the second portion, the low rigidity portion having a rigidity less than remaining portions of the bracket; and a vehicle component arranged adjacent to the EGR valve. The low rigidity portion is formed to break when the EGR valve receives a shock load from the vehicle component.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: September 8, 2020
    Assignee: NIFCO INC.
    Inventors: Matt Davies, Gavin Wilkinson, Steve Garrett
  • Patent number: 10753317
    Abstract: An internal combustion engine includes a supercharger having a compressor and a turbine and an EGR apparatus having an exhaust recirculating pipe, an upstream EGR valve and a downstream EGR valve. An electronic control unit fully opens the upstream EGR valve and controls an EGR amount by the downstream EGR valve when a peak value of an exhaust pressure increases excessively. The resulting increase in exhaust volume causes the peak value of the exhaust pressure to fall, and damage to parts of an exhaust system can be avoided. The electronic control unit fully opens the downstream EGR valve and controls the EGR amount by the upstream EGR valve when the peak value of the exhaust pressure decreases excessively. The resulting decrease in the exhaust volume causes the peak value of the exhaust pressure to rise, enabling supercharging.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: August 25, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Masayoshi Nakagawa
  • Patent number: 10753323
    Abstract: An intake and exhaust system of an engine is provided, which includes an exhaust gas recirculation (EGR) passage configured to recirculate a portion of exhaust gas as EGR gas, from an exhaust passage of the engine to an intake passage, and an EGR cooler disposed in the EGR passage, the EGR cooler being coupled to a passage wall of the exhaust passage at an EGR gas inlet side, and having a center line intersecting with a flow direction of exhaust gas in the exhaust passage. A through-hole communicating the EGR cooler with the exhaust passage is formed into a long hole elongated in the flow direction in the exhaust passage.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: August 25, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Hisayoshi Yamada, Yuji Kojima
  • Patent number: 10704476
    Abstract: The present invention relates to a device for controlling the amount of air fed to the intake of a turbocharged internal-combustion engine comprising a turbocharging system including a turbocharger (7) with a turbine (8) connected to at least one exhaust gas outlet of said engine, as well as an outside air compressor (10), a line (15, 18) for partial transfer of the compressed air from the compressor to the turbine inlet, and an EGR line (18, 21) between an exhaust gas outlet and a compressed air intake line (4). The device is characterized in that the partial transfer line and the EGR line share at least one common portion (18).
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: July 7, 2020
    Assignee: IFP ENERGIES NOUVELLES
    Inventors: Thierry Colliou, Bruno Walter, Stephane Venturi
  • Patent number: 10704461
    Abstract: An engine system includes an internal combustion engine, at least one turbocharger, and a catalytic treatment device. The engine includes an exhaust manifold system having a main exhaust manifold and a bypass exhaust manifold. A partial-engine bypass valve system is positioned between the engine and the exhaust manifold system. The bypass valve system when placed in a non-bypass position directs all of the engine exhaust gases to the turbine wheel of the turbocharger, and after passing through the turbine wheel the gases proceed to the catalytic device. In a bypass position of the bypass valve system, a bypass portion of the total exhaust gases is made to bypass the turbine wheel and proceed to the catalytic device, while the remainder first passes through the turbine wheel before going to the catalytic device.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: July 7, 2020
    Assignee: Garrett Transportation I Inc.
    Inventors: Arnaud Gerard, Damien Marsal, Bassam Chammas, Andreas Heckner
  • Patent number: 10690092
    Abstract: An engine system includes an engine including a plurality of engine cylinders, an intake manifold, and an exhaust manifold; and a compound turbocharger system having a first turbine driving a first compressor, and a second turbine driving a second compressor. The engine system further includes an intake line including the first compressor, the second compressor, and the at least one intake manifold; and an exhaust line including the exhaust manifold, the second turbine, and the first turbine. The engine system also includes an exhaust restriction valve located in the exhaust manifold of the engine downstream of a subset of the plurality of the engine cylinders; and an exhaust gas recirculation line having an upstream end located to receive exhaust from the subset of the plurality of engine cylinders, and a downstream end coupled to the intake line downstream the first compressor and upstream of the second compressor.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: June 23, 2020
    Assignee: Caterpillar Inc.
    Inventor: Matthew T. Wolk
  • Patent number: 10669962
    Abstract: A method for predictive open-loop and/or closed-loop control of an internal combustion engine with control variables pursuant to a model of the engine with characterizing variables and a control circuit for the control variables. The control variables are adjusted in an open-loop or closed-loop manner by measuring actual values and specifying target values of the characterizing variables and, optionally, depending on the boundary and/or environmental and/or ageing conditions. The characterizing variables are controlled pursuant to a model of the engine with the characterizing variables and a control circuit with the control variables. The controlling is part of a model-based predictive control, wherein the characterizing variables of the engine model are calculated and the control variables of the engine are adjusted in a predictively controlled manner.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: June 2, 2020
    Assignee: MTU FRIEDRICHSHAFEN GMBH
    Inventors: Michael Buchholz, Knut Graichen, Karsten Harder, Jens Niemeyer, Jörg Remele
  • Patent number: 10655529
    Abstract: An engine system includes an internal combustion engine, a compressor, a high-temperature coolant circulation circuit, a low-temperature coolant circulation circuit, an intercooler, and an electronic control unit. The intercooler is configured to transfer heat of the high-temperature coolant to the low-temperature coolant via intake air. An in-compressor passage of the compressor is arranged in the low-temperature coolant circulation circuit at a location at which the low-temperature coolant that exits from an in-cooler low-temperature water passage during a predetermined period from beginning of cold start is introduced into the in-compressor passage without passing through a low-temperature radiator. The electronic control unit is configured to increase the flow rate of the low-temperature coolant that flows through the low-temperature coolant circulation circuit during the predetermined period as compared to the flow rate after the predetermined period.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: May 19, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yushi Kakuta
  • Patent number: 10648402
    Abstract: This control device starts an electric motor on the basis of a drive signal. After starting of the electric motor, the control device switches a bypass valve from an open state to a closed state.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: May 12, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Yusuke Yashiro, Yoshihiro Hayashi, Byeongil An, Yuuji Wakai
  • Patent number: 10634075
    Abstract: An exhaust gas recirculation control method of an internal combustion engine, the internal combustion engine including: a turbo supercharger; an exhaust gas recirculation passage communicating an exhaust passage with an intake passage at a part upstream of a compressor of the turbo supercharger; an exhaust gas recirculating amount control valve disposed in the exhaust gas recirculation passage; a differential pressure generating valve disposed upstream of a merging portion of fresh air gas and exhaust gas in the intake passage; and a controller adapted to control an opening of the exhaust gas recirculation amount control valve and an opening of the differential pressure generating valve, wherein in the method, the controller cooperatively controls the opening of the exhaust gas recirculation amount control valve and the opening of the differential pressure generating valve to make an exhaust gas recirculation ratio change to a target exhaust gas recirculation ratio at a change rate that prevents abnormal comb
    Type: Grant
    Filed: September 7, 2015
    Date of Patent: April 28, 2020
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Tetsuya Kobara, Takayuki Hamamoto, Kazuhiro Terayama
  • Patent number: 10619581
    Abstract: A control device of an internal-combustion engine capable of improving merchantability by promptly and appropriately securing an in-cylinder fresh air amount even when an internal-combustion engine including a boost device and an EGR device is in a transient operation state is provided. A control device 1 includes an ECU 2. The ECU 2 calculates an intake air amount GGAScyl, sets an upper-limit target fresh air amount GAIR_hisH, controls a boost operation of a boost device 7 when an operating range of an internal-combustion engine 3 is in a predetermined boost range, and controls an EGR device 5 so that exhaust gas recirculation is stopped when the intake air amount GGAScyl does not reach an upper-limit target fresh air amount GAIR_hisH and the exhaust gas recirculation is executed when the intake air amount GGAScyl reaches the upper-limit target fresh air amount GAIR_hisH in the predetermined boost range.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: April 14, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Masaki Ueno, Noritaka Kimura, Kosuke Ihara, Yuto Katori, Yosuke Yamada, Hajime Uto
  • Patent number: 10612451
    Abstract: A method to operate a combustion machine having at least an internal combustion engine, a fresh gas line and a cooling system comprising an ambient heat exchanger. A compressor, which can especially be part of an exhaust gas turbocharger, is integrated into the fresh gas line, and an intercooler is integrated between the compressor and the internal combustion engine and also into the cooling system. In case of an increase in the load demand that is made of the operation of the internal combustion engine, the temperature of the coolant flowing in the cooling system and entering the intercooler is lowered. As a result, the cooling output of the intercooler is increased and consequently, the temperature of the fresh gas (charge air) entering the internal combustion engine is also lowered.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: April 7, 2020
    Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT
    Inventors: Marco Kiel, Bodo Hoffmann
  • Patent number: 10598060
    Abstract: Methods and systems are provided for removing moisture from an engine exhaust system. In one example, a method includes, during a vehicle key-off condition, in response to a higher than threshold exhaust moisture level and a lower than threshold engine run time during an immediately prior drive cycle, operating an electric air compressor to remove the moisture accumulated in the exhaust manifold.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: March 24, 2020
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed Dudar
  • Patent number: 10550794
    Abstract: A control device for an internal combustion engine includes an electronic control unit. The electronic control unit controls a fuel injection valve to inject at least primary fuel and secondary fuel in this order such that a pattern of a pressure increase rate in the combustion chamber includes a first peak and a second peak, controls an injection timing and an injection amount of each of the primary fuel and the secondary fuel such that a second peak value becomes higher than a first peak value, controls an intake device such that oxygen density is increased along with an increase in a load, and controls the injection timing and the injection amount of each of the primary fuel and the secondary fuel such that a peak difference acquired by subtracting the first peak value from the second peak value is increased as the load is increased.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: February 4, 2020
    Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota Jidoshokki
    Inventor: Hiroshi Kuzuyama
  • Patent number: 10495012
    Abstract: An automotive vehicle includes an internal combustion engine that outputs exhaust gas from a cylinder, and an active thermal management system. The active thermal management system flows coolant around the cylinder thereby varying an exhaust temperature of the exhaust gas. An electronic engine controller controls the internal combustion engine and the active thermal management system. The engine controller generates a control signal to selectively operate the active thermal management system in a normal mode, a thermal increase mode, and a thermal decrease mode. The normal mode flows the coolant at a first coolant temperature. The thermal increase mode flows the coolant at a second coolant temperature greater than the first coolant temperature thereby increasing the exhaust temperature of the exhaust gas. The thermal decrease mode flows the coolant at a third coolant temperature less than the first coolant temperature thereby decreasing the exhaust temperature of the exhaust gas.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: December 3, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Sami Ahmed, Michael A. Smith, Michelangelo Ardanese, Daniel J. Shepard
  • Patent number: 10495033
    Abstract: A compressor system (1) for a motor vehicle, with a compressor (2) having a driven compressor wheel (3) for compressing intake air for an internal combustion engine (9) of the motor vehicle, an intake section (6) extending along a first axis (11) for guiding air to the compressor wheel (3), and an exhaust gas recirculation line (8) extending along a second axis (12) for recirculating exhaust gas from the internal combustion engine (9) into the intake section (6). The intake section (6) has a first diameter (10) in the area of the opening of the recirculation line (8). The recirculation line (8) opens eccentrically into the intake section (6).
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: December 3, 2019
    Assignee: BorgWarner Inc.
    Inventor: Konstantin Dietrich
  • Patent number: 10495100
    Abstract: A turbocharger compressor includes an inlet-adjustment mechanism operable to move between an open position and a closed position. The mechanism includes a plurality of movable blades disposed about the compressor air inlet and located between an upstream wall surface and a downstream wall surface of an annular space within the air inlet wall. The blades move radially inward from the annular space into the air inlet when the blades are in the closed position so as to form an orifice of reduced diameter relative to a nominal diameter of the inlet. Recirculation of air upstream through the mechanism is prevented by a downstream blade seal. When EGR is employed, an upstream blade seal is included, preventing oil-laden air from migrating into the mechanism. The blade seals can be of various types, including O-ring seals or labyrinth seals.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: December 3, 2019
    Assignee: Garrett Transportation I Inc.
    Inventors: Hani Mohtar, Stephane Pees, Alain Lombard, Sowmya Bolakonda
  • Patent number: 10465631
    Abstract: A system and method for generating an improved syngas are disclosed. The system includes a mixing unit, a heat exchanger, an engine and a water gas shift (WGS) reactor. The mixing unit is configured to mix a hydrocarbon fuel, an oxidant, and water to generate a fuel mixture. The heat exchanger is coupled to the mixing unit and configured to receive the fuel mixture and generate a heated fuel mixture. The engine is coupled to the heat exchanger and configured to receive the heated fuel mixture and generate an exhaust syngas. The WGS reactor is coupled to the engine and configured to receive the exhaust syngas and provide a water gas shift reaction of the hydrogen, carbon monoxide and the water vapor in the exhaust syngas to provide a reduction in a level of carbon monoxide in the exhaust syngas and an increase in a level of hydrogen in the exhaust syngas to generate the improved syngas.
    Type: Grant
    Filed: January 7, 2017
    Date of Patent: November 5, 2019
    Assignee: General Electric Company
    Inventors: Vitali Victor Lissianski, Adam Edgar Klingbeil
  • Patent number: 10465637
    Abstract: An apparatus for improving exhaust gas recirculation performance is provided which induces improved exhaust gas recirculation flow during engine operating transients, including transients in which exhaust gas flow conditions are unfavorable. The apparatus includes a fresh air intake passage with a venturi section and an exhaust gas recirculation passage outlet, preferably in the form of a pitot tube, arranged in the fresh air intake passage adjacent to the venturi section such that a pressure-reducing flow in the fresh air is induced as a result of the Coand? effect. Establishing Coand? flow adjacent to the exhaust gas recirculation outlet substantially assists in drawing exhaust gas into the fresh air intake flow in transient operating conditions, including unfavorable exhaust-to-intake pressure difference conditions. The Coand? flow also assists in more rapid and thorough mixing the gases to provide a homogeneous mixture to minimize NOx production during engine operating transients.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: November 5, 2019
    Assignee: Bendix Commercial Vehicle Systems, LLC
    Inventors: Richard Beyer, Nicholas Asmis, Mark McCollough, Cory Hamilton, William Schaffeld
  • Patent number: 10458369
    Abstract: Methods and systems are provided for a cooling arrangement. In one example, a method for the cooling arrangement may comprise adjusting exhaust-gas recirculate and/or exhaust gas flow to first and second coolers of the cooling arrangement in response to one or more of an exhaust-gas recirculate demand and an energy recovery demand.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: October 29, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Hans Guenter Quix, Andreas Kuske
  • Patent number: 10436130
    Abstract: A combustion engine for a vehicle has an intake duct through which a fuel gas/air/exhaust gas mixture can be fed to a combustion unit of the combustion engine, and an exhaust gas recirculation system feeding in an exhaust gas from the combustion unit at an exhaust gas admission region to the gas fed to the combustion unit. A measuring device that determines the fuel gas/air/exhaust gas mass flow and the fuel gas/air/exhaust gas temperature is arranged in the intake duct upstream of the combustion unit and downstream of the exhaust gas admission region. A temperature sensor is arranged both in the exhaust gas recirculation system and in the intake duct, in each case upstream of the exhaust gas admission region, in addition to the measuring device, to determine a recirculated exhaust gas mass flow and/or an air mass flow fed to the combustion unit.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: October 8, 2019
    Assignee: MAN TRUCK & BUS AG
    Inventors: Franz Werner Prümm, Bruno Barciela, Joachim Weiß
  • Patent number: 10428729
    Abstract: Various systems and methods are provided for controlling operation of a turbocharger compressor. In one example, a system includes a turbocharger including a turbine positioned in an exhaust passage and a compressor positioned in an intake passage, an engine bypass passage having an inlet fluidically coupled to an outlet of the compressor and an outlet fluidically coupled to an inlet of the turbine, an engine bypass valve to control flow through the engine bypass passage, and a controller configured to adjust a position of the engine bypass valve to maintain compressor operation within a designated compressor efficiency region.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: October 1, 2019
    Assignee: GE Global Sourcing LLC
    Inventors: James Robert Mischler, Thomas Michael Lavertu, Jared Davis Vaughn, Alok Kumar, Richard James Scott
  • Patent number: 10378433
    Abstract: The disclosure relates to a supercharged internal combustion engine with an intake system and an exhaust gas discharge system that include two turbochargers arranged in series, a turbo-generator, and an electrically-driven compressor. During engine operation with mid-to-high exhaust gas flow rates, excess exhaust gas that bypasses the high-pressure turbocharger may be directed through the turbo-generator to generate electricity that may be provided to drive the electrically-driven compressor.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: August 13, 2019
    Assignee: Forb Global Technologies, LLC
    Inventors: Joerg Kemmerling, Hanno Friederichs, Helmut Matthias Kindl, Vanco Smiljanovski, Franz Arnd Sommerhoff, Andreas Kuske, Frank Wunderlich
  • Patent number: 10329999
    Abstract: A compressor includes an impeller, a housing, and a connecting shaft. An inlet for introducing gas into a suction side of the impeller, and an annular groove formed in an outer periphery of the inlet are formed in the housing. The groove communicates with the inlet on the intake passage side. The groove is blocked on the impeller side. A gas outlet of an EGR passage is connected with a middle of the groove. An inner diameter of the groove is machined to be larger than an inner diameter of an end part of the gas outlet of the intake passage (an end part on the inlet side).
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: June 25, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Masakazu Tabata
  • Patent number: 10316802
    Abstract: An exhaust gas recirculation valve device for a vehicle includes: a mixer tube extending between an inlet end and an outlet end, a first plate at the inlet end, and a second plate at the outlet end. The mixer tube having a plurality of divider walls extending radially between the longitudinal axis and the outer wall longitudinally from the inlet to the outlet. The divider walls defining a plurality of mixing chambers therebetween for receiving and storing exhaust gas from a dedicated engine cylinder. The first plate rotatably disposed at the inlet end of the tube, and the second plate rotatably disposed at the second end of the mixer tube to selectively block off at least one chamber at the inlet and outlet ends, respectively. The mixer configured to capture and distribute recirculated exhaust gas corresponding to an operating speed of the engine.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: June 11, 2019
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Mark Shirley
  • Patent number: 10316859
    Abstract: A turbocharger includes ported shroud compressor housing disposed about compressor wheel having air inlet passage extending axially along and circumferentially about a longitudinal axis, volute base portion operably adjacent to compressor wheel, contour that encircles and complementarily matches compressor wheel, inducer including ring and plurality of extending members, inlet section extending from volute base portion, and recirculation cavity formed in volute base portion and inlet section with recirculation slot and inlet slot for reentry of airflow into inlet section. The ring has inner wall surface defining first section extending axially along longitudinal axis proximate to compressor wheel, second section extending from first section radially away from longitudinal axis, and third section extending from second section radially away from and along longitudinal axis and distal to compressor wheel.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: June 11, 2019
    Assignee: BorgWarner Inc.
    Inventors: Thomas Craig Harris, Daniel Pruitt, David Ledger, Paul Edmonds
  • Patent number: 10309417
    Abstract: A turbocharger includes ported shroud compressor housing disposed about a compressor wheel, having an air inlet passage extending axially along and circumferentially about a longitudinal axis, volute base portion operably adjacent to compressor wheel, contour that encircles and complementarily matches compressor wheel, inducer including ring and plurality of extending members, inlet section extending from volute base portion, and recirculation cavity formed in volute base portion and inlet section with a recirculation slot and inlet slot for reentry of airflow into inlet section. The ring has an inner wall surface defining a first section extending axially along the longitudinal axis and proximate to the compressor wheel, second section extending from first section radially away from longitudinal axis, and third section extending from second section along longitudinal axis and distal to the compressor wheel.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: June 4, 2019
    Assignee: BorgWarner Inc.
    Inventors: Thomas Craig Harris, Daniel Pruitt, David Ledger, Paul Edmonds
  • Patent number: 10302048
    Abstract: Methods and systems are provided for controlling a temperature of gases within a heat exchanger, a ratio of gases output by the heat exchanger, and selectively charging/discharging gases from the heat exchanger to one or both of an intake system or an exhaust system. In one example, a method may include controlling operation of an energy recovery device coupled to the heat exchanger in response to engine operating conditions, and increasing or decreasing flow of exhaust gas and/or compressed intake air into the heat exchanger in response to energy recovery device output.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: May 28, 2019
    Assignee: Ford Global Technologies, LLC
    Inventor: Xiaogang Zhang
  • Patent number: 10301990
    Abstract: Methods and systems are provided for an exhaust gas aftertreatment system. In one example, a method may include limiting ammonia desorption from a catalyst in response to an increase in driver demand by activating an electric motor.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: May 28, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Frederik De Smet, Monika Angst, Christoph Boerensen, Dirk Roemer, Frank Linzen, Brendan Carberry, Felix Goebel, Evgeny Smirnov
  • Patent number: 10288016
    Abstract: Methods and systems for operating an engine including an external exhaust gas recirculation (EGR) system are presented. In one non-limiting example, output of a differential pressure sensor and output of an intake manifold pressure sensor are used as a basis for determining whether or not EGR system degradation is present while an engine is operating at conditions other than engine idle conditions.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: May 14, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Alexander O'Connor Gibson, Christopher M. Short, Robert Roy Jentz, John Eric Rollinger
  • Patent number: 10280878
    Abstract: Various systems and methods are provided for exhaust gas recirculation. In one example, an exhaust gas recirculation (EGR) system includes an EGR passage coupling an engine exhaust system to an engine intake system, an EGR cooler positioned in the EGR passage, a recirculation passage coupling an outlet of the EGR cooler to an inlet of the EGR cooler, an EGR cooler recirculation valve positioned in the recirculation passage and controllable to change a flow of exhaust gas though the recirculation passage, and a controller configured to adjust a position of the EGR cooler recirculation valve based on a temperature at the inlet of the EGR cooler.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: May 7, 2019
    Assignee: GE Global Sourcing LLC
    Inventor: Balaji Hosadurgam Ravindranath
  • Patent number: 10280853
    Abstract: A supercharged internal combustion engine is provided that is capable of introducing EGR gas into an intake passage on an upstream side relative to a compressor. When a required WGV opening degree is less than a lower limit value WGVmin in a case in which introduction of EGR gas is started under a situation in which the temperature of an EGR valve is less than or equal to a predetermined value X1, the WGV opening degree is controlled during a protection time period T3 after introduction of EGR gas starts by using the lower limit value WGVmin as the required WGV opening degree.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: May 7, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keiji Yoeda
  • Patent number: 10267216
    Abstract: A turbocharger that includes a turbine and a compressor, an electric supercharger that is arranged in an intake passage, and a control device that increases a rotational speed of the electric supercharger upon receipt of a torque increase request with respect to the internal combustion engine are provided. During a process in which the rotational speed of the electric supercharger is increasing, if the rotational speed arrives at a predetermined switching rotational speed “Ntec”, the control device decreases a rate of increase in the rotational speed from a first rate of increase “Nteup1” to a second rate of increase “Nteup2” (<Nteup1). At such time, the control device sets each of “Ntec” and “Nteup2” based on at least any one of an engine speed, a rate of increase in the engine speed, and a supercharging pressure difference between a target supercharging pressure and an actual supercharging pressure.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: April 23, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi Oyagi, Yusuke Takasu
  • Patent number: 10247117
    Abstract: An internal-combustion engine includes an EGR device that recirculates a portion of exhaust gas, as EGR gas, from an exhaust passage to an intake passage through an EGR valve. A control device for the control device is configured to perform: EGR ratio estimation processing that calculates, by using an estimation model, an estimated EGR ratio; and estimation model update processing that updates the estimation model. The estimation model is configured to calculate the estimated EGR ratio based on a pressure parameter being a ratio of or a difference between gas pressures upstream and downstream of the EGR valve. The pressure parameter is represented by a pressure parameter model that is updatable. The estimation model update processing includes: calculating an actual EGR ratio; and updating the pressure parameter model such that the estimated EGR ratio becomes closer to the actual EGR ratio.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: April 2, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Aya Kamisaka, Satoru Tanaka
  • Patent number: 10221813
    Abstract: An electronic control unit executes a deposit removal operation of removing a deposit accumulated in an intake port of an internal combustion engine. In the deposit removal operation, the temperature of an EGR gas that is recycled to an intake passage is measured or estimated. Then, a variable valve mechanism is operated such that an intake valve is opened in an expansion stroke or an exhaust stroke and the lift amount of the intake valve becomes larger as the measured or estimated temperature of the EGR gas becomes lower. Further, an external EGR device is operated such that the amount of the EGR gas that is recycled to the intake passage becomes larger as the measured or estimated temperature of the EGR gas becomes lower.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: March 5, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Masayoshi Nakagawa
  • Patent number: 10215135
    Abstract: Methods and systems are provided for flowing exhaust through a second cooler, arranged downstream of a first cooler and upstream of an intake in an exhaust gas recirculation passage, and extracting condensate for water injection from condensate in cooled exhaust gas exiting the second cooler. In one example, a method may include adjusting the amount of exhaust gas flowing through the second cooler based on an amount of water stored at a water storage tank of a water injection system and engine operating conditions. Further, the method may include selectively flowing exhaust gas from the second cooler to a location upstream or downstream of a compressor in response to engine operating conditions.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: February 26, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Daniel Joseph Styles, Gopichandra Surnilla, Mohannad Hakeem, Brad Alan VanDerWege, Christopher House, Michael Howard Shelby
  • Patent number: 10215134
    Abstract: Systems, apparatus, and methods are disclosed that include a divided exhaust engine with at least one pair of primary EGR cylinders and a plurality of pairs of non-primary EGR cylinders. The pair of primary EGR cylinders can be connected to an intake with an EGR system that lacks an EGR cooler. In another embodiment, the cylinder pairs include exhaust flow paths that join in the cylinder head to form a common exhaust outlet for each cylinder pair in the cylinder head that is connected directly to the EGR system or to the exhaust system without an exhaust manifold.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: February 26, 2019
    Assignee: Cummins Inc.
    Inventors: Anthony Kyle Perfetto, Samuel C. Geckler, Hongfeng H. Wang
  • Patent number: 10151276
    Abstract: An exhaust heat recovery system may include an exhaust pipe through which exhaust gas exhausted from an engine moves, a main channel through which a working fluid moves, a turbine rotated by the working fluid exhausted from the main channel to generate energy, an exhaust gas recirculation (EGR) line circulating a portion of the exhaust gas exhausted from the engine to an intake manifold, and channel control valves disposed in the main channel and configured to control movement of the working fluid so that the exhaust gas moving along the EGR line and the working fluid moving along the main channel exchange heat with each other.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: December 11, 2018
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: You Sang Son
  • Patent number: 10151277
    Abstract: A device of a system for air ducting of an internal combustion engine in a motor vehicle with a turbocharger arranged between an exhaust gas line and an intake line. The device includes a high pressure flow pathway with a valve branching from the exhaust gas line between the internal combustion engine and a turbine side of the turbocharger, a low pressure flow pathway with a valve branching in the flow direction of the exhaust gas downstream from the turbine side of the turbocharger, and an exhaust gas heat exchanger. A first flow pathway with a valve and a second flow pathway with a valve merge into a mouth region with a third flow pathway. At least one section of the high pressure flow pathway, the low pressure flow pathway, the flow pathways, and the exhaust gas heat exchanger are integrated inside a housing formed as a continuous compact unit.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: December 11, 2018
    Assignee: HANON SYSTEMS
    Inventors: Carsten Ohrem, Peter Diehl, Stojan Cucuz
  • Patent number: 10138800
    Abstract: A system and method for condensation management in a low-pressure loop EGR system are provided. The system includes an EGR condensation temperature module configured to determine an EGR condensation temperature of recirculated exhaust gas upstream of an EGR cooler and an EGR coolant temperature controller communicably coupled to the EGR condensation temperature module. The EGR coolant temperature controller provides EGR coolant to the EGR cooler at or above the EGR condensation temperature. The system also includes a charge air condensation temperature module configured to determine a charge air condensation temperature of charge air upstream of a charge air cooler and a charge air coolant temperature controller communicably coupled to the charge air condensation temperature module. The charge air coolant temperature controller provides charge air coolant to the charge air cooler at or above the charge air condensation temperature.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: November 27, 2018
    Assignee: Cummins, Inc.
    Inventors: Leon A. LaPointe, Daniel J. Mohr, Edward J. Lyford-Pike, Ashish Gupta
  • Patent number: 10132235
    Abstract: Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation to an intake passage via a first exhaust manifold and exhaust gas to an exhaust passage via a second exhaust manifold. In one example, the split exhaust engine system may include a first set of exhaust valves fluidly coupled to the exhaust passage, upstream of a turbocharger turbine, a first emission control device (ECD), and a second ECD disposed within the exhaust passage, the second ECD positioned downstream of the first ECD. The system may further include a second set of exhaust valves fluidly coupled to the intake passage and the exhaust passage, between the first ECD and the second ECD.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: November 20, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Joseph Norman Ulrey, Daniel Paul Madison, Brad Alan Boyer
  • Patent number: 10125725
    Abstract: A turbocharged automotive system includes an internal combustion engine and a Long Route Exhaust Gas Recirculation system connected to an exhaust line of the engine. The LR-EGR system is equipped with a LR-EGR cooler, which is cooled by a LR-EGR coolant circuit receiving coolant from an engine coolant circuit. The turbocharged automotive system further includes a low temperature coolant circuit and a connecting element for connecting the LR-EGR coolant circuit with the low temperature coolant circuit bypassing the engine coolant circuit.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: November 13, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Cesare Maria Meano, Alberto Racca, Joaquin De La Morena
  • Patent number: 10125793
    Abstract: A centrifugal compressor which can be stably operated in a wide range by increasing an operating range on a low-flow-rate side and on a high-flow-rate side, with a simple structure of combining a recirculation flow path and a reverse swirling flow generation unit including fixed blades, without providing a complicated movable mechanism for a guide vane.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: November 13, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Isao Tomita, Byeongil An
  • Patent number: 10119501
    Abstract: Systems, apparatus, and methods are disclosed that include a divided exhaust engine configured to control an EGR fraction in the charge flow to the cylinders in response to an EGR fraction overshoot condition, an exhaust pressure change in the EGR loop, and/or a transient operating condition.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: November 6, 2018
    Assignee: Cummins Inc.
    Inventors: Marten H. Dane, Sudhanshu Talwar
  • Patent number: 10100785
    Abstract: A product may include a bearing housing in which a shaft may be supported by a bearing so that it may rotate. A compressor wheel may be disposed on the shaft. A compressor cover may be connected with the bearing housing, which may form a compressor body and may define a chamber within which the compressor wheel may rotate. A diffuser may extend radially outward from the chamber and may receive gas from the compressor wheel. An inlet may be provided to the compressor body, which may receive a supply of exhaust gas. An EGR distribution cavity may be defined within the compressor body and may extend around the shaft. An EGR inlet channel may extend into the bearing housing from the inlet to the EGR distribution cavity. An EGR passage may extend from the EGR distribution cavity to the diffuser.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: October 16, 2018
    Assignee: BorgWarner Inc.
    Inventors: Joseph Powell McHenry, Gordon Clark Jenks, Robert Malcolm Wallace
  • Patent number: 10100788
    Abstract: An engine system for exhausting condensate water includes an intake line into which fresh air flows, an engine including a plurality of cylinders for generating driving torque by burning fuel, an exhaust line in which exhaust gas exhausted from the cylinders flows, a low-pressure exhaust gas recirculation system (LP-EGR) through which the exhaust gas flowing through the exhaust line is resupplied to the cylinder, and a turbocharger including a turbine rotated by the exhaust gas exhausted from the cylinder, a compressor for compressing external air and exhaust gas recirculation (EGR) gas by being rotated together with the turbine, and an exhaust pipe for exhausting condensate water to the outside, wherein the condensate water generated by the external air flows through the intake line and the EGR gas is recirculated by the LP-EGR.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: October 16, 2018
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Choo Saeng Choi, Han Sang Kim
  • Patent number: 10100722
    Abstract: A control method of a turbocharged engine includes: a bypass passage bypassing a compressor; and a bypass valve configured to open and close the bypass passage. The method includes: a compressor flow rate predicting step of predicting a flow rate of air flowing through the compressor after a predetermined time; a compressor pressure ratio detecting step of detecting a pressure ratio of the compressor; a surging determining step of determining whether or not surging occurs after the predetermined time, in reference to preliminary prepared surging determination data based on the compressor predicted flow rate and the compressor pressure ratio; and a bypass valve controlling step of opening the bypass valve when it is determined in the surging determining step that the surging occurs and closing the bypass valve when it is determined in the surging determining step that the surging does not occur.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: October 16, 2018
    Assignee: Mazda Motor Corporation
    Inventors: Takafumi Nishio, Masayoshi Higashio, Yugou Sunagare
  • Patent number: 10094263
    Abstract: According to a device and a method for controlling an internal combustion engine, a control device (38) enables controllability of the internal combustion engine to be improved by preventing surging from occurring upon starting or stopping of the internal combustion engine, by opening a relief valve (28) as a turbine rotational speed reaches a surging rotational speed when the control device (38) causes a motor generator (32) to assist in rotation of the turbocharger (12) upon starting of a diesel engine body (11).
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: October 9, 2018
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Yukio Yamashita, Yoshihisa Ono, Musashi Sakamoto, Takeshi Tsuji, Akihiro Miyanagi
  • Patent number: 10094339
    Abstract: An improved exhaust gas recirculation (EGR) system comprises combustion chambers divided into a first portion and a second portion. An intake valve and an exhaust valve are associated with each combustion chamber. An intake manifold is in fluid communication with the combustion chambers through respective intake valves. A first exhaust manifold is in fluid communication with said first portion of combustion chambers through respective exhaust valves. A second exhaust manifold is in fluid communication with said second portion of combustion chambers through respective exhaust valves. An EGR exhaust valve is associated with each combustion chamber in said second portion. An EGR manifold is in fluid communication with each combustion chamber in said second portion through respective EGR exhaust valves and with said at least one intake manifold.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: October 9, 2018
    Assignee: WESTPORT POWER INC.
    Inventor: Philip C. Millward
  • Patent number: 10094269
    Abstract: A four-stroke reciprocating piston internal combustion engine is disclosed. The engine includes an even number of cylinders grouped into a first half and a second half. An exhaust gas turbocharger has a first turbine inlet and a second turbine inlet. Each of the cylinders has an intake duct with an intake opening, a first exhaust duct with a first exhaust opening, and a second exhaust duct with a second exhaust opening. The first half of cylinders is connected via the respective first exhaust ducts to the first turbine inlet and is connected via the second exhaust ducts to the second turbine inlet. The second half of cylinders is connected via the respective first exhaust ducts to the second turbine inlet and is connected via the respective second exhaust ducts to the first turbine inlet. The respective second exhaust openings have a larger diameter than the respective first exhaust openings.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: October 9, 2018
    Assignee: Daimler AG
    Inventors: Normann Freisinger, Juergen Friedrich