Plural Egr Valves In The Recirculation Passage Patents (Class 123/568.2)
  • Patent number: 9790877
    Abstract: A method of controlling exhaust gas recirculation (EGR) for controlling recirculation of exhaust gas discharged from a combustion chamber of an engine includes: a data obtaining operation of obtaining data about an engine state and a gas supply state; a current EGR rate calculating operation of calculating a current EGR rate of supply gas based on the data; a demand EGR rate setting operation of setting a demand EGR rate matched with the data in a pre-made target EGR rate map; an error calculating operation of calculating a difference between the demand EGR rate and the current EGR rate; and a control operation of making the current EGR rate follow the demand EGR rate by changing a recirculation rate of the exhaust gas by adjusting an inhalation side pressure of the supply gas according to the difference.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: October 17, 2017
    Assignee: Doosan Infracore Co., Ltd.
    Inventors: Eui Joon Shim, Young Deok Han, Seung Hyup Shin
  • Patent number: 9518519
    Abstract: Systems, methods and techniques for exhaust gas recirculation are provided. The system includes controlling the mixing of exhaust flow from at least one cylinder of an engine with air in an air intake system prior to combustion in response to an EGR fraction deviation condition. The exhaust flow from the at least one cylinder is accumulated prior to mixing and distributed into the intake air system in a controlled manner to mitigate or prevent the EGR flow from deviating from an expected EGR fraction.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: December 13, 2016
    Assignee: Cummins Inc.
    Inventors: Marten H. Dane, John C. Wall, Wayne A. Eckerle
  • Patent number: 9328671
    Abstract: A torque requesting module generates a first torque request for a spark ignition engine based on driver input. A torque conversion module converts the first torque request into a second torque request. A setpoint control module generates setpoints for the spark ignition engine based on the second torque request. A vacuum requesting module requests an amount of vacuum within an intake manifold of the engine. The setpoint module selectively adjusts at least one of the setpoints based on the amount of vacuum requested. A model predictive control (MPC) module: identifies sets of possible target values based on the setpoints; generates predicted parameters based on a model of the spark ignition engine and the sets of possible target values, respectively; selects one of the sets of possible target values based on the predicted parameters; and sets target values based on the possible target values of the selected one of the sets.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: May 3, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Christopher E. Whitney, Robert J. Genslak, Jyh-Shin Chen
  • Patent number: 9309804
    Abstract: A method of providing exhaust gas recirculation (EGR) to an air-boosted internal combustion engine. The engine has both a high pressure EGR loop and a low pressure EGR loop. Each EGR loop has a valve that controls the amount of EGR that is delivered to the engine intake from that loop. During low-speed engine conditions, more EGR is delivered to the engine intake from the low pressure EGR loop than from the high pressure EGR loop. During high-speed engine conditions, more EGR is delivered to the engine intake from the high pressure EGR loop than from the low pressure EGR loop.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: April 12, 2016
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Christopher J. Chadwell, Terrence F. Alger, II, Shinhyuk Joo
  • Patent number: 9091233
    Abstract: A ninety-degree V-engine having eight or more cylinders can include a first pipe that connects an exhaust port of a first dedicated EGR cylinder bank to an intake manifold and a second pipe that connects an exhaust port of a second dedicated EGR cylinder of a different cylinder bank to the intake manifold, the first and second dedicated EGR cylinders each being one of two consecutive cylinders in a corresponding cylinder bank specified by a specific cylinder firing order.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: July 28, 2015
    Assignee: FCA US LLC
    Inventor: Kenneth E Hardman
  • Publication number: 20150083095
    Abstract: An internal combustion engine includes an Exhaust Gas Recirculation (EGR) system having an EGR valve and a reed valve in an EGR passage, and a control device that expresses a relationship between an opening degree of the EGR valve and a mass flow rate of an EGR gas by using a first volume flow rate of the EGR gas that can be expressed by using an isentropic flow equation of a nozzle of the EGR valve and a second volume flow rate of the EGR gas pumped out by the reed valve. Even if the reed valve (check valve) is provided in the EGR passage, the mass flow rate of the EGR gas can be calculated accurately.
    Type: Application
    Filed: May 2, 2013
    Publication date: March 26, 2015
    Applicant: ISUZU MOTORS LIMITED
    Inventors: Yoshihumi Hanamura, Mitsuhiro Aso
  • Patent number: 8955499
    Abstract: An exhaust gas recirculation system according to the present invention includes an EGR passage for introducing a part of exhaust gas emitted from an engine to an intake passage, the EGR passage communicating at one end thereof with the intake passage whereas at the other end thereof with an exhaust passage, an EGR control valve for controlling the flow rate of the exhaust gas flowing therein, the EGR control valve being disposed at one end of the EGR passage, an on-off valve for opening or closing the EGR passage, the on-off valve being disposed at the other end of the EGR passage, and a heat exchanger for cooling the exhaust gas introduced to the EGR passage, the heat exchanger) being disposed nearer the other end of the EGR passage than the on-off valve.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: February 17, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Fumio Takamiya
  • Publication number: 20140366851
    Abstract: A three-way valve configured to provide the connection between a gas intake circuit and an exhaust gas recirculation circuit is disclosed. The valve includes a first shutter for regulating the airflow rate, a second shutter for regulating the recirculated exhaust gas flow rate, a single motor for driving the two shutters, and gearing connecting the motor to at least one shutter. The gearing includes functionality to drive the at least one shutter.
    Type: Application
    Filed: August 29, 2014
    Publication date: December 18, 2014
    Inventors: Nicolas Vitiello, Sébastien Potteau, Sébastien Adenot, Grégory Hodebourg
  • Patent number: 8905009
    Abstract: When a failure occurs in synchronizing mechanism, an intake air throttle valve is rotated in a direction that is opposite from a normal operational time valve closing direction, so that an arm of a driven plate contacts a throttle valve side stopper to stop rotation of the intake air throttle valve. Thereafter, when a low pressure EGR valve is rotated from a full close position to a full open position, an EGR valve side stopper contacts the arm of the driven plate to stop the low pressure EGR valve. A rotational angle of the EGR valve is sensed with a sensor and is outputted to an ECU. The ECU determines that a failure mode is set when a valve angle sensed with the sensor coincides with a rotation stop position of the EGR valve.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: December 9, 2014
    Assignee: Denso Corporation
    Inventors: Yuichiro Moritani, Shinsuke Miyazaki, Kazushi Sasaki, Koji Hashimoto
  • Patent number: 8862369
    Abstract: The invention relates to a method for controlling an exhaust gas recirculation circuit (2c) for an internal combustion engine (M) of a motor vehicle. The engine (M) is linked to an air intake circuit (2a) and to a gas exhaust circuit (2b) linked to the air intake circuit (2a) by the recirculation circuit (2c). A first valve (15) controls the flow of air upstream from the recirculation circuit (2c), and gases that are recirculated within the a second valve (16) controls the flow of exhaust recirculation circuit (2c). In the method of the invention, the recirculation of the exhaust gases is in particular controlled by means of measuring a pressure difference across the terminals of the second valve (16).
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: October 14, 2014
    Assignee: Valeo Systemes de Controle Moteur
    Inventors: Nicolas Vitiello, Sébastien Potteau, Sébastien Adenot, Grégory Hodebourg
  • Patent number: 8844505
    Abstract: The invention relates to a method for managing an exhaust gas recirculation circuit of a petrol thermal engine, the engine including at least one combustion chamber connected to an inlet line and an exhaust line between which extends said recirculation circuit, the recirculation circuit including a flow-rate adjustment valve, wherein said method comprises the step of adjusting flow-rate adjustment valve based on a flow-rate setpoint, said method further comprising the steps of: detecting an operation parameter representative of a pressure difference between an upstream pressure and a downstream pressure relative to the flow-rate adjustment valve, and, after comparing the parameter with a threshold corresponding to a minimum pressure difference, adjusting the flow-rate in at least one of the lines in order to increase the pressure difference.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: September 30, 2014
    Assignee: Valeo Systemes de Controle Moteur
    Inventors: Nicolas Vitiello, Sebastien Potteau, Frederic Cousin, Loic Violette, Damien Fournigault
  • Patent number: 8776768
    Abstract: An EGR control device is provided in a branched-off pipe portion of a recirculation pipe unit. The EGR control valve is opened during an exhaust gas recirculation period, which is a part of a valve-opening period of an intake valve, so that exhaust gas is re-circulated into a combustion chamber during the exhaust gas recirculation period. As a result, swirl flow of the re-circulated exhaust gas to be formed in the combustion chamber is increased to improve ignitionability and to facilitate combustion of air-fuel mixture.
    Type: Grant
    Filed: December 24, 2009
    Date of Patent: July 15, 2014
    Assignees: Denso Corporation, Nippon Soken, Inc.
    Inventors: Makoto Otsubo, Fumiaki Aoki, Jun Yamada, Tadashi Komiyama
  • Publication number: 20140190458
    Abstract: A method of using exhaust gas recirculation (EGR) in an internal combustion engine. At least two of the cylinders are “dual exhaust-ported cylinders” having two exhaust ports. For each of these cylinders, one of the exhaust ports is connected to the EGR loop and the other of the exhaust ports is connected to the main exhaust line. These cylinders are controlled such that one exhaust port is open and the other exhaust port is closed during each engine cycle, and are operated, on a cycle-by-cycle basis so that all of the exhaust produced by a cylinder may be delivered to the EGR loop at any cycle. The number of cylinders operating as EGR cylinders per engine cycle is in response to a desired EGR rate.
    Type: Application
    Filed: January 8, 2013
    Publication date: July 10, 2014
    Applicant: Southwest Research Institute
    Inventors: Jess W. Gingrich, Raphael Gukelberger
  • Patent number: 8751101
    Abstract: A method of diagnosing a cooling subsystem of an engine system in response a parameter extracted from dynamic hydraulic pressure sensed in the cooling subsystem, and products and systems using same.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: June 10, 2014
    Assignee: BorgWarner Inc.
    Inventors: Olaf Weber, Wolfgang Wenzel
  • Patent number: 8596065
    Abstract: There is provided a control device for an internal combustion engine capable of suppressing trouble such that the gas having an EGR ratio higher than necessary is sucked with the opening of an intake air bypass passage. A supercharger having a compressor is provided in an intake air passage of an internal combustion engine. An EGR passage and an EGR valve are provided. The intake air bypass passage connects the upstream side of the compressor in the intake air passage to the downstream side of the compressor in the intake air passage. The intake air bypass passage is provided with an air bypass valve (ABV). The EGR valve is closed simultaneously with the operation of the ABV.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: December 3, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Yoshihiro Okada
  • Patent number: 8528530
    Abstract: A diesel engine system includes a cylinder, an exhaust manifold, an exhaust gas recirculation (EGR) manifold, and a valve. The exhaust manifold is fluidly coupled with the cylinder and directs exhaust generated in the cylinder to an exhaust outlet that delivers the exhaust to an external atmosphere. The EGR manifold is fluidly coupled with the cylinder and recirculates the exhaust generated in the cylinder back to the cylinder as at least part of intake air that is received by the cylinder. The valve is disposed between the cylinder and the exhaust manifold and between the cylinder and the EGR manifold. The valve has a donating mode and a non-donating mode. The valve fluidly couples the cylinder with the EGR manifold when the valve is in the donating mode and fluidly couples the cylinder with the exhaust manifold when the valve is in the non-donating mode.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: September 10, 2013
    Assignee: General Electric Company
    Inventors: Sebastian W. Freund, Jassin Fritz, Georgios Bikas, Sean Jenkins
  • Publication number: 20130206117
    Abstract: An exhaust gas recirculation apparatus for engine includes an EGR passage, a first EGR valve and a second EGR valve provided in series in the EGR passage to regulate an EGR flow rate in the EGR passage. The first EGR valve is configured as a poppet valve and is configured to open in a range of opening degree from full open to full close. The second EGR valve has a maximum opening degree restricted to a predetermined small opening degree smaller than full open. The second EGR valve is configured to open in a range of opening degree from the predetermined small opening degree to full close and to allow the first EGR valve to provide a maximum exhaust flow rate when the second EGR valve is held at the predetermined small opening degree.
    Type: Application
    Filed: January 25, 2013
    Publication date: August 15, 2013
    Applicant: AISAN KOGYO KABUSHIKI KAISHA
    Inventor: AISAN KOGYO KABUSHIKI KAISHA
  • Publication number: 20130186376
    Abstract: Various methods and systems are provided for diagnosing an engine component condition in an exhaust gas recirculation system. In one example, a method includes selectively routing exhaust from a subset of engine cylinders to an exhaust passage via a first valve and to an intake passage via a second valve, and obtaining one or more of a pressure or temperature from the subset of engine cylinders. The method further includes indicating an engine component condition based on the one or more of the pressure or temperature.
    Type: Application
    Filed: January 25, 2012
    Publication date: July 25, 2013
    Inventors: Eric David Peters, Shashi Kiran, Nicholas Hansen
  • Publication number: 20130139793
    Abstract: An exhaust gas treatment system includes: confirming that an engine stops operation; sensing present pressure difference between front and rear sides of an EGR value; setting learning value by performing large offset learning, if the present pressure difference exceeds an absolute value of a first lower or upper values; setting learning value by performing step learning, if the present pressure difference exists between first and second lower values that is larger than the first lower value or the present pressure difference a between first and second upper values that is smaller than the first upper value; and setting the present pressure difference value as a learning value, if the present pressure difference exists between the second lower and second upper values. The exhaust gas treatment method accurately learns the pressure difference of the EGR system to improve the quality of the exhaust gas and securely control the EGR system.
    Type: Application
    Filed: June 6, 2012
    Publication date: June 6, 2013
    Applicants: Kia Motors Corporation, Hyundai Motor Company
    Inventors: Ji Hong Pak, Jong Ik Chun
  • Patent number: 8439021
    Abstract: An EGR system for an IC engine, wherein the IC engine includes a block defining a plurality of combustion cylinders, a plurality of multi-valve heads, each multi-valve head associated with a respective combustion cylinder and including an inlet valve and an exhaust valve, an exhaust manifold fluid coupled with each exhaust valve, and an intake manifold fluidly coupled between the exhaust manifold and each inlet valve. The EGR system includes: a plurality of EGR inlet valves and a plurality of EGR exhaust valves, wherein each multi-valve head includes at least one EGR inlet valve and at least one EGR exhaust valve; an EGR exhaust manifold fluidly coupled with each EGR exhaust valve; and an EGR intake manifold fluidly coupled between the EGR exhaust manifold and each EGR inlet valve.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: May 14, 2013
    Assignee: Deere & Company
    Inventor: Carl T. Vuk
  • Publication number: 20130025575
    Abstract: The invention relates to a method for controlling an exhaust gas recirculation circuit (2c) for an internal combustion engine (M) of a motor vehicle. The engine (M) is linked to an air intake circuit (2a) and to a gas exhaust circuit (2b) linked to the air intake circuit (2a) by the recirculation circuit (2c). A first valve (15) controls the flow of air upstream from the recirculation circuit (2c), and gases that are recirculated within the a second valve (16) controls the flow of exhaust recirculation circuit (2c). In the method of the invention, the recirculation of the exhaust gases is in particular controlled by means of measuring a pressure difference across the terminals of the second valve (16).
    Type: Application
    Filed: December 22, 2010
    Publication date: January 31, 2013
    Applicant: VALEO SYSTEMES DE CONTROLE MOTEUR
    Inventors: Nicolas Vitiello, Sébastien Potteau, Sébastien Adenot, Grégory Hodebourg
  • Publication number: 20130000614
    Abstract: Exhaust gas recirculation (EGR) systems and methods are provided. In one embodiment, a method for controlling an engine includes providing a first EGR gas flow to an intake manifold of the engine by closing a first EGR valve or a second EGR valve and at least partially opening the other of the first EGR valve and the second EGR valve, wherein the first and second EGR valves are respectively positioned in first and second EGR passages respectively coupled between first and second donor cylinder groups and an intake manifold, and providing a second EGR gas flow that is higher than the first EGR gas flow to the intake manifold by fully opening the first EGR valve or the second EGR valve and at least partially opening the other of the first EGR valve and the second EGR valve.
    Type: Application
    Filed: June 29, 2011
    Publication date: January 3, 2013
    Inventors: Sebastian Walter Freund, Jassin Fritz, Georgios Bikas, Sean Jenkins
  • Publication number: 20130000600
    Abstract: A method for reducing a nitrogen oxide emission in a diesel engine. The method can include taking at least one exhaust gas of an in engine combustion in a combustion chamber and: segmenting a first portion of exhaust gas enters as an internal exhaust gas recirculation from the combustion chamber of the diesel engine via an outlet valve associated with the combustion chamber, and is recirculated, via the outlet valve, from the subsequent exhaust gas tract, into the combustion chamber of the diesel engine; segmenting a second portion of exhaust gas remains in the combustion chamber and is not expelled; and segmenting a third portion of exhaust gas is recirculated as external exhaust gas recirculation via an exhaust gas recirculation valve into the combustion chamber.
    Type: Application
    Filed: December 29, 2011
    Publication date: January 3, 2013
    Inventor: Thorsten Schnorbus
  • Publication number: 20120260897
    Abstract: An internal combustion engine comprises a working cylinder, an EGR cylinder, an intake system for supplying a combustion air charge to the cylinders, a first exhaust system for removing exhaust gas from the working cylinder and to the atmosphere, a second exhaust system for removing exhaust from the EGR cylinder and supplying the exhaust gas through an EGR supply conduit to the intake system, an EGR bypass conduit extending between and fluidly connecting the EGR supply conduit and the first exhaust treatment system, a first valve assembly disposed in the EGR supply conduit between the intake system and an inlet of the EGR bypass conduit and a second valve assembly disposed in the EGR bypass conduit.
    Type: Application
    Filed: July 13, 2011
    Publication date: October 18, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Alan W. Hayman, Rodney E. Baker, Robert S. McAlpine
  • Publication number: 20120192560
    Abstract: This disclosure relates to a waste heat recovery (WHR) system and method for regulating exhaust gas recirculation (EGR) cooling, and more particularly, to a Rankine cycle WHR system and method, including a recuperator bypass arrangement to regulate EGR exhaust gas cooling for engine efficiency improvement and thermal management. This disclosure describes other unique bypass arrangements for increased flexibility in the ability to regulate EGR exhaust gas cooling.
    Type: Application
    Filed: December 23, 2011
    Publication date: August 2, 2012
    Applicant: CUMMINS INTELLECTUAL PROPERTY, INC.
    Inventors: Timothy C. Ernst, Dave Morris
  • Patent number: 8225773
    Abstract: The invention relates to a valve arrangement (2) for an exhaust gas recirculation device of an internal combustion engine, especially in a motor vehicle. Said valve arrangement (2) comprises a first valve (9) which is used to control a first gas path (7) and is mobile between an open position, a closed position, and at least one intermediate position. The inventive valve arrangement (2) also comprises a second valve (10) for controlling a second gas path (8) which is separate from the first gas path (7), said second valve being mobile between an open position, a closed position and at least one intermediate position independently from the first valve (9). The valve arrangement (2) also comprises a common housing (6) which contains both valves (9, 10) and through which the two gas paths (7, 8) are guided.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: July 24, 2012
    Assignee: Mahle International GmbH
    Inventors: Andreas Gruner, Robert Sendor, Rudiger Knauss, Bernhard Schwalk
  • Publication number: 20120180479
    Abstract: In an internal combustion engine and a method of operation the internal combustion engine which includes a high pressure and a low pressure turbocharger having exhaust gas turbines arranged in series in an engine exhaust line provided with a high pressure exhaust gas recirculation line and a low pressure exhaust gas recirculation line via which exhaust gas can be conducted to an inlet line of the engine, the arrangement is switchable depending on the engine speed between an exhaust gas recirculation by way of the high pressure line and an exhaust gas recirculation by way of both, the high pressure and the low pressure line, to achieve low emissions and low fuel consumption.
    Type: Application
    Filed: February 7, 2012
    Publication date: July 19, 2012
    Inventors: Heiko Beil, Florian Wegenast
  • Patent number: 8220443
    Abstract: An EGR system includes a high-pressure EGR unit and a low-pressure EGR unit. During the steady operation of an internal combustion engine, the high-pressure EGR gas and the low-pressure EGR gas are mixed with each other at a mixture ratio, in which the ratio of the high-pressure EGR gas amount to the entire EGR gas amount is higher than that in a known mixture ratio, and then recirculated back to the internal combustion engine. In the engine speed-up transitional operation period, the opening amount of a high-pressure EGR valve is adjusted to the opening amount that is much smaller than the target opening amount corresponding to the target operation mode. Thus, it is possible to suppress occurrence of the situation where the entire EGR gas amount is excessive in the period in which the low-pressure EGR gas amount does not decrease by a sufficient amount.
    Type: Grant
    Filed: January 10, 2008
    Date of Patent: July 17, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroki Murata, Masahiro Nagae, Hajime Shimizu, Shigeki Nakayama, Tomomi Onishi
  • Publication number: 20120145134
    Abstract: An exhaust gas recirculation system includes a housing, first and second valves, an actuator, a cam member coupled with the first valve to be in synchronization therewith and receiving power of the actuator to rotate, and a link member coupled with the second valve to be in synchronization therewith and receiving power of the actuator through the cam member to rotate. The cam member includes a cam groove, an open end part formed on one end side of the groove in its formation direction and opening outward of the cam member, and an overlapping part overlapping with the actuator. The link member is driven to rotate along the groove in synchronization with rotation of the cam member. The link member includes a roller guided along the groove.
    Type: Application
    Filed: December 1, 2011
    Publication date: June 14, 2012
    Applicant: DENSO CORPORATION
    Inventors: Shinsuke Miyazaki, Koji Hashimoto, Takaaki Oohashi, Kazushi Sasaki, Yuichiro Moritani
  • Patent number: 8176903
    Abstract: A system and method for delivering EGR to an internal combustion engine is presented. The system can reduce system cost and lower system complexity.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: May 15, 2012
    Assignee: Ford Global Technologies, LLC
    Inventors: Robert Albert Stein, Daniel Joseph Styles, Donald J. Lewis
  • Patent number: 8171895
    Abstract: A coolant flow control system includes a fluid cooling device, a coolant bypass circuit, and a controller. The controller is configured to generate a control signal indicative of a desired flow of coolant through the coolant bypass circuit as a function of the projected rate of change in the cooling device temperature gradient.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: May 8, 2012
    Assignee: Caterpillar Inc.
    Inventors: Chris J. Scolton, Douglas W. Koehler
  • Patent number: 8166957
    Abstract: Systems and methods are provided for operating an engine exhaust system. In one example, a system comprises a first valve, and a second valve coupled to the first valve via a shaft. A first position of the shaft situates the first valve closed and the second valve open, a second position situates the second valve closed and the first valve open by a first amount, and a third position situates the second valve closed and the first valve open by a second, larger amount.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: May 1, 2012
    Assignee: Ford Global Technologies, LLC
    Inventors: Jason Aaron Lupescu, Daniel Joseph Styles, James Michael Kerns, Michael James Uhrich, Stephen B. Smith, David A. May
  • Patent number: 8108129
    Abstract: A technique is provided which, in an exhaust gas recirculation apparatus for an internal combustion engine, can calculate a low-pressure EGR rate and a high-pressure EGR rate in an accurate manner, and control the flow rates of both a low pressure EGR passage and a high pressure EGR passage in a closed-loop control manner, thereby to make the temperature of intake air and a supercharging pressure stable and to suppress the deterioration of exhaust emissions as well as the deterioration of power performance.
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: January 31, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shigeki Nakayama, Tomomi Onishi, Akio Matsunaga
  • Publication number: 20110290223
    Abstract: Various systems and method for heating an engine in a vehicle during a cold start are described. In one example, thermal efficiency of the engine is improved by heating engine coolant via a high-pressure exhaust gas recirculation (HP-EGR) system. For example, after light-off of an exhaust catalyst, exhaust gas is routed through the HP-EGR system which includes a HP-EGR cooler. Heat from the exhaust gas is then used to warm the engine coolant via the HP-EGR cooler.
    Type: Application
    Filed: June 29, 2011
    Publication date: December 1, 2011
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Gopichandra Surnilla, David Karl Bidner, Daniel Joseph Styles
  • Patent number: 8065992
    Abstract: A valve arrangement is provided for an exhaust gas recirculation device of an internal-combustion engine. The engine has at least one inlet and at least one outlet. The recirculation device includes an inlet on the internal-combustion engine outlet side, an outlet on the internal-combustion engine inlet side, and several, particularly two flow paths extending between the inlet and the outlet and being parallel at least in areas. The valve arrangement has a first control element and a second control element for automatically regulating/controlling fluid flow flowing between the inlet and the outlet and automatically regulating/controlling the distribution of this fluid flow between the several flow paths. A common actuator is provided for operating the first control element as well as the second control element.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: November 29, 2011
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Gernot Tschaler, Andreas Nabecker
  • Patent number: 7987837
    Abstract: Systems and methods are provided for operating an engine exhaust system. In one example, a system comprises a first valve, and a second valve coupled to the first valve via a shaft. A first position of the shaft situates the first valve closed and the second valve open, a second position situates the second valve closed and the first valve open by a first amount, and a third position situates the second valve closed and the first valve open by a second, larger amount.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: August 2, 2011
    Assignee: Ford Global Technologies, LLC
    Inventors: Jason Aaron Lupescu, Daniel Joseph Styles, James Michael Kerns, Michael James Uhrich, Stephen B. Smith, David A. May
  • Patent number: 7987836
    Abstract: A system is described for coordination of Exhaust Gas Recirculation (EGR) flow through and around a plurality of EGR coolers differently depending on operating conditions.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: August 2, 2011
    Assignee: Ford Global Technologies, LLC
    Inventors: Eric Matthew Kurtz, Daniel Joseph Styles
  • Publication number: 20110180048
    Abstract: The invention relates to a method for managing an exhaust gas recirculation circuit of a petrol thermal engine, the engine including at least one combustion chamber connected to an inlet line and an exhaust line between which extends said recirculation circuit, the recirculation circuit including a flow-rate adjustment valve, wherein said method comprises the step of adjusting flow-rate adjustment valve based on a flow-rate setpoint, said method further comprising the steps of: detecting an operation parameter representative of a pressure difference between an upstream pressure and a downstream pressure relative to the flow-rate adjustment valve, and, after comparing the parameter with a threshold corresponding to a minimum pressure difference, adjusting the flow-rate in at least one of the lines in order to increase the pressure difference.
    Type: Application
    Filed: July 17, 2009
    Publication date: July 28, 2011
    Applicant: VALEO SYSTEMES DE CONTROLE MOTEUR
    Inventors: Nicolas Vitiello, Sebastien Potteau, Frederic Cousin, Loic Violette, Damien Fournigault
  • Patent number: 7963275
    Abstract: A system and method for delivering EGR to an internal combustion engine is presented. The system can reduce system cost and lower system complexity.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: June 21, 2011
    Assignee: Ford Global Technologies, LLC
    Inventors: Robert Albert Stein, Daniel Joseph Styles, Donald J. Lewis
  • Patent number: 7938106
    Abstract: The invention relates to a device for controlling an exhaust gas stream. Said device comprises a housing (1, 101) with at least a first, second and third connection (2, 3, 4, 102, 103, 104) that form links to a first, second and third exhaust gas conduit for conducting the exhaust gases of an internal combustion engine, a first sliding element (6, 106) with a displaceable first sliding rod (6a, 106a) and a first sealing member (6c, 106c) that is located on said rod, a second sliding element (7, 107) with a displaceable second sliding rod (7, 107a) and a second sealing member (7c, 107c) that is located on said rod and an actuator for a force-assisted actuation of the device. According to the invention, a link (4c, 104b) can be established between the first and the second connection and can be adjusted by means of the first sealing member (6, 106) and a link (3c, 103b) can be established and adjusted between the first and the third connection by means of the second sealing member (7c, 107c).
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: May 10, 2011
    Assignees: Behr GmbH & Co. KG, Behr Thermot-Tronik GmbH
    Inventors: Peter Geskes, Hans-Peter Klein
  • Patent number: 7900609
    Abstract: An exhaust gas recirculation (EGR) system communicates hot exhaust gases from an exhaust manifold to an intake manifold through a first passage and a second passage parallel with the first passage. A first EGR valve assembly controls exhaust gas flow through the first passage and a second EGR valve assembly controls exhaust gas flow through the second passage. Exhaust gas is selectively flowed through one or both of the first and second passages to provide the desired temperature and flow through the intake manifold to the engine.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: March 8, 2011
    Assignee: Continental Automotive Canada, Inc.
    Inventors: Russell M. Modien, Kenneth P. Nydam, David W. Balsdon
  • Patent number: 7886728
    Abstract: A system and method are provided to control the power output, fuel efficiency and gas emissions of an internal combustion engine using an exhaust gas recirculation system. A recirculation loop containing a heat exchanger and an accumulator is installed between the exhaust ports and intake ports of the cylinders of the internal combustion engine. Diverter valves are used to control the amount of exhaust gas directed into the recirculation loop and the proportion of exhaust gas entering the intake ports. Controlling the amount of re-circulated exhaust gas and proportion of exhaust gas in the intake ports thereby controls the power output of the internal combustion engine.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: February 15, 2011
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Paul M. Mileski
  • Publication number: 20110023838
    Abstract: A valve arrangement is provided for an exhaust gas recirculation device of an internal-combustion engine. The engine has at least one inlet and at least one outlet. The recirculation device includes an inlet on the internal-combustion engine outlet side, an outlet on the internal-combustion engine inlet side, and several, particularly two flow paths extending between the inlet and the outlet and being parallel at least in areas. The valve arrangement has a first control element and a second control element for automatically regulating/controlling fluid flow flowing between the inlet and the outlet and automatically regulating/controlling the distribution of this fluid flow between the several flow paths. A common actuator is provided for operating the first control element as well as the second control element.
    Type: Application
    Filed: July 7, 2010
    Publication date: February 3, 2011
    Applicant: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Gernot TSCHALER, Andreas Nabecker
  • Patent number: 7866306
    Abstract: A control apparatus of an EGR control valve has an EGR control valve has an exhaust gas recirculation passage to circulate exhaust gas of an combustion engine from an exhaust gas passage to an intake air passage. A measurement unit measures a flow rate of EGR gas flowing in the exhaust gas recirculation passage, and a controller receives an input from the measurement unit and closes the EGR control valve if the EGR-gas flow rate is smaller than a predetermined threshold value when the EGR gas is flowing from the exhaust side to the intake side of the internal combustion engine.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: January 11, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Eiichiro Ohata, Shiro Yamaoka, Yoshihiro Sukegawa, Hiroaki Hoshika, Kaori Kashio
  • Publication number: 20110000188
    Abstract: A heat exchanging system suitable for use in an exhaust gas recirculation (EGR) circuit comprises a split EGR heat exchanger arrangement. Exhaust gas is used to warm engine oil via a first heat exchanger during initial stages of an engine operating cycle. In the later stages of the operating cycle, recirculated exhaust gases are diverted to flow through the second heat exchanger where they are cooled by the engine coolant.
    Type: Application
    Filed: June 18, 2010
    Publication date: January 6, 2011
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Ian Graham Pegg, Roland Stark
  • Publication number: 20100250103
    Abstract: An exemplary method of controlling an internal combustion engine system is described herein. The internal combustion engine system includes an internal combustion engine, a valve driving mechanism which reciprocally drives an intake valve and an exhaust valve for a combustion chamber of the internal combustion engine, a turbocharger including a turbine and a compressor, and a first EGR passage which communicates an exhaust passage downstream of the emission control device and an intake passage upstream of the compressor. The exemplary method includes shutting off supplying fuel to the combustion chamber under a predetermined condition, and decreasing a lift of the intake or exhaust valve for the combustion chamber during the shutting off supplying fuel to the combustion chamber compared to in a case of supplying fuel to said combustion chamber.
    Type: Application
    Filed: March 25, 2010
    Publication date: September 30, 2010
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Daisuke Shimo, Motoshi Kataoka, Yoshihisa Nakamoto, Tatsuya Tanaka, Kota Maekawa, Hideya Horii, Takashi Hatano
  • Patent number: 7801669
    Abstract: The ratio between the amount of exhaust gas recirculated by a high-pressure EGR device and the amount of exhaust gas recirculated by a low-pressure EGR device (mixture ratio) is controlled based on the operating state of an internal combustion engine and the correlation between the fuel consumption rate of the internal combustion engine and the mixture ratio. Thus, high-pressure EGR and low-pressure EGR are performed at the mixture ratio (optimum mixture ratio) at which the fuel consumption rate is at or around the minimum value.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: September 21, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Masahiro Nagae
  • Publication number: 20100163006
    Abstract: An EGR control device is provided in a branched-off pipe portion of a recirculation pipe unit. The EGR control valve is opened during an exhaust gas recirculation period, which is a part of a valve-opening period of an intake valve, so that exhaust gas is re-circulated into a combustion chamber during the exhaust gas recirculation period. As a result, swirl flow of the re-circulated exhaust gas to be formed in the combustion chamber is increased to improve ignitionability and to facilitate combustion of air-fuel mixture.
    Type: Application
    Filed: December 24, 2009
    Publication date: July 1, 2010
    Applicants: DENSO CORPORATION, NIPPON SOKEN, INC.
    Inventors: Makoto Otsubo, Fumiaki Aoki, Jun Yamada, Tadashi Komiyama
  • Patent number: 7743757
    Abstract: A system and method for controlling EGR of an internal combustion engine is presented. The system is capable of controlling EGR over a wide range of flow rates.
    Type: Grant
    Filed: July 19, 2007
    Date of Patent: June 29, 2010
    Assignee: Ford Global Technologies, LLC
    Inventors: Freeman Carter Gates, Sassan Farahmand, Songping Yu
  • Publication number: 20100146968
    Abstract: A system, apparatus, and method for exhaust gas recirculation (EGR) is disclosed. The EGR apparatus includes an EGR circuit having an input configured to receive an exhaust gas from an engine exhaust port, an output configured to return the exhaust gas to an intake port of the engine, and an EGR path configured to circulate the exhaust gas between the input and the output. The EGR apparatus also includes an EGR compressor connected to the EGR circuit in the EGR path downstream of the input and EGR compressor configured to compress the exhaust gas for circulation to the output. The EGR apparatus further includes a valve system positioned in the EGR circuit and upstream of the EGR compressor to selectively cut off a flow of the exhaust gas to the EGR compressor and selectively inject ambient air into the EGR path.
    Type: Application
    Filed: December 12, 2008
    Publication date: June 17, 2010
    Inventors: Alexander Simpson, Rodrigo Rodriguez Erdmenger