With Exhaust Gas Recirculation Patents (Class 60/605.2)
  • Patent number: 8701409
    Abstract: Methods and systems are provided for a boosted engine having a split intake system coupled to a split exhaust system. Aircharges of differing composition, pressure, and temperature may be delivered to the engine through the split intake system at different points of an engine cycle. In this way, boost and EGR benefits may be extended.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: April 22, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Joseph Norman Ulrey
  • Patent number: 8695340
    Abstract: An arrangement for a supercharged combustion engine includes a first compressor compressing air in the engine air inlet line as a first stage and a second compressor compressing the air in the inlet line as a second stage, a first coolant-cooled charge air cooler cooling the air after it has been compressed in the first stage and before it is compressed in the second stage, and an air-cooled charge air cooler cooling the compressed air when it has been compressed by the first stage, a second coolant-cooled charge air cooler cooling the compressed air after it has been compressed in the second stage and before it is compressed in the air-cooled charge air cooler. Exhaust gases in an exhaust line from the engine drive turbines which operate the compressors. A return line from the exhaust line and connected into the inlet line has a cooler for the exhaust gases before mixing the gases with the inlet air.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: April 15, 2014
    Assignee: Scania CV AB
    Inventors: Zoltan Kardos, Erik Söderberg, Hans Wikström
  • Patent number: 8689554
    Abstract: An engine arrangement of the type including an internal combustion engine having an EGR line, wherein at least one turbine is located on an exhaust line, is provided. The arrangement includes a water vapor generating arrangement using exhaust gases energy to transform liquid water into water vapor. The water vapor is injected in the exhaust line upstream of the turbine. The EGR line is branched off the exhaust line upstream of the turbine and the water vapor generating arrangement includes at least one EGR/water heat exchanger for exchanging heat between the EGR line and the water to be vaporized.
    Type: Grant
    Filed: July 21, 2009
    Date of Patent: April 8, 2014
    Assignee: Renault Trucks
    Inventor: Nicolas Espinosa
  • Patent number: 8689553
    Abstract: An internal combustion engine comprises an intake system to deliver a compressed intake charge thereto. A venturi assembly is disposed in the intake system and defines a venturi defining a low pressure zone “Z” for the intake charge passing therethrough. An annular exhaust gas recirculation conduit distribution passage extends circumferentially about an inlet annulus of an intake manifold and receives diverted exhaust gas from an exhaust system for delivery to the intake charge through exhaust gas recirculation diffuser passages disposed at circumferentially spaced locations about the annular exhaust gas recirculation conduit distribution passage.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: April 8, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Timothy J. Johnson, Scott Igram, Carl Eric Fonville
  • Publication number: 20140090374
    Abstract: An engine exhaust gas treatment system includes an oxidation catalyst, a NOX adsorber, and a turbine. The oxidation catalyst and the NOX adsorber are fluidly connected to an exhaust manifold of the engine. The turbine is fluidly connected to, and downstream of the oxidation catalyst and the NOx adsorber.
    Type: Application
    Filed: October 3, 2012
    Publication date: April 3, 2014
    Applicant: Caterpollar Inc.
    Inventor: Praveen Chavannavar
  • Publication number: 20140083096
    Abstract: A method of controlling turbine efficiency in a turbo unit provided on an internal combustion engine includes providing a flow of gas in an area upstream a turbine at a direction different to the flow of exhaust gases in the same area, regulating the flow by a valve, and controlling the valve from a control unit having at least boost pressure and/or EGR flow as input parameters.
    Type: Application
    Filed: December 2, 2013
    Publication date: March 27, 2014
    Applicant: VOLVO LASTVAGNAR AB
    Inventors: Per ANDERSSON, Martin BAUER
  • Patent number: 8677750
    Abstract: A unit for an internal combustion engine includes a turbocharger unit and an auxiliary component adjacent to the turbocharger unit and provided with means for connection thereof to the structure of the engine. The auxiliary component has a fluid outlet or inlet arranged immediately adjacent to a fluid inlet or outlet of the turbocharger unit, but not in contact therewith. The unit further includes a cylindrical sealing member, resiliently deformable, having opposite ends sealingly associated respectively to the fluid outlet or inlet of the auxiliary component and to the fluid inlet or outlet of the turbocharger unit.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: March 25, 2014
    Assignee: Fiat Powertrain Technologies S.p.A.
    Inventor: Francesco Ferrazzi
  • Patent number: 8677982
    Abstract: An air intake tract arrangement for an internal combustion engine includes an exhaust gas inlet device arranged at the inlet side of a charge air cooler and configured to direct injected EGR exhaust gas substantially in a direction towards an inlet of said charge air cooler, thereby enabling the use of plastic intake tract components.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: March 25, 2014
    Assignee: Mann+Hummel GmbH
    Inventors: Thierry Marimbordes, Pascal Noiseau
  • Publication number: 20140075936
    Abstract: A power plant is provided and may include an engine configured to receive charge air and produce exhaust. A first turbo machine may be driven by the exhaust and may drive a compressor that receives air and produces the charge air. A second turbo machine may receive the exhaust and may rotationally drive a pump in response thereto. The pump may receive an EGR from the exhaust and may introduce the pumped EGR to the charge air.
    Type: Application
    Filed: November 18, 2013
    Publication date: March 20, 2014
    Applicant: AVL POWERTRAIN ENGINEERING, INC.
    Inventors: Ho TENG, Gerhard REGNER, Gary HUNTER
  • Patent number: 8671682
    Abstract: Multi-stage turbocharging, and more particularly, an advanced multi-stage turbocharging system using the variable turbine power of one or more variable turbine geometry (VTG) turbochargers to adjust compressor boost and exhaust back pressure to engine operating demands. The invention further relates to a turbocharged internal combustion engine, in particular a turbocharged internal combustion engine with at least one high-pressure turbine stage and one downstream low-pressure turbine stage, wherein the high-pressure turbine may be a single-flow or double-flow type, wherein the high pressure or low pressure compressor may be variable geometry, wherein the high pressure or low pressure compressor may be variably bypassed, and wherein the high pressure or low pressure turbine may be provided with an active control variable bypass or wastegate.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: March 18, 2014
    Assignee: BorgWarner Inc
    Inventors: Eric Parlow, Patrick Sweetland, Matt Rice
  • Patent number: 8667795
    Abstract: Disclosed is a turbocharged internal combustion engine having at least one intake for supplying the internal combustion engine with fresh air or fresh mixture on an inlet side, a cylinder head having at least two cylinders which are arranged along a cylinder head longitudinal axis and each of which has at least one outlet opening which is adjoined by an exhaust line for discharging the exhaust gases out of the cylinder, the exhaust lines of at least two cylinders being merged on an outlet side, so as to form an integrated exhaust manifold within the cylinder head, to form an overall exhaust line. Also disclosed is at least one exhaust-gas turbocharger which comprises a turbine arranged in the overall exhaust line and a compressor arranged in the at least one intake.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: March 11, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Bernd Steiner, Kai Sabastian Kuhlbach
  • Patent number: 8667780
    Abstract: Methods and systems are provided for operating an engine including an emission control system, the emission control system comprising a catalyst downstream of a turbine of a boosting device and a reductant injector upstream of the turbine. In one example, the method comprises injecting reductant into exhaust upstream of the turbine, mixing the injected reductant with exhaust gas via the turbine, and delivering the mixed reductant to the catalyst.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: March 11, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Jeffrey Scott Hepburn, William Charles Ruona, Brien Lloyd Fulton, Gopichandra Surnilla, Eric Matthew Kurtz
  • Publication number: 20140060043
    Abstract: An object of the invention is to provide an internal combustion engine control apparatus that can restrain an EGR amount from becoming excessive, and restrain destabilization of combustion . . . . First, in response to a change of an operation condition, operation amounts of a plurality of actuators that influence the EGR amount are set. When the operation amounts of the plurality of actuators are set, operation of an actuator that decreases the EGR amount (referring to an external EGR amount, an internal EGR amount or both, the same applying to the following) is started (S140), and thereafter, operation of another actuator that increases the EGR amount is started (S150).
    Type: Application
    Filed: May 19, 2011
    Publication date: March 6, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shigeki Miyashita
  • Publication number: 20140053553
    Abstract: An EGR system is disclosed for reducing NOx emissions and that may eliminate the need for a SCR system. The disclosed EGR system includes dual valves, including a hot EGR valve disposed in the exhaust manifold and a cold EGR valve disposed upstream of the intake manifold. A VGT turbine with adjustable vanes may also be employed with a low pressure turbine. Intake air may proceed through both a high pressure compressor as well as a low pressure compressor and the high pressure compressor may be substantially bypassed by way of a bypass valve disposed between the low pressure compressor and the air intake. The EGR system may be controlled by adjusting the positions of the valves and VGT turbine vanes.
    Type: Application
    Filed: August 24, 2012
    Publication date: February 27, 2014
    Applicant: CATERPILLAR, INC.
    Inventor: Matthew Thomas Wolk
  • Patent number: 8656715
    Abstract: Methods and systems are provided for operating a turbocharged engine including a particulate filter positioned upstream of a turbocharger turbine, a catalyst positioned downstream of the turbine, and an EGR passage coupled between an engine exhaust and engine intake. In one example, the method comprises, diverting exhaust gas from downstream of the filter to the engine intake via the EGR passage, and adjusting an amount of diverted exhaust gas based on filter operating conditions.
    Type: Grant
    Filed: January 16, 2012
    Date of Patent: February 25, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Jeffrey Scott Hepburn, William Charles Ruona, Brien Lloyd Fulton, Gopichandra Surnilla, Eric Matthew Kurtz
  • Publication number: 20140041384
    Abstract: Various methods and systems are provided for controlling air flow in a two-stage turbocharger. In one example, an engine method comprises adjusting one or more exhaust gas recirculation valves to maintain a first turbocharger within a first air flow range, and adjusting a turbocharger bypass valve to maintain a second turbocharger within a second air flow range.
    Type: Application
    Filed: August 9, 2012
    Publication date: February 13, 2014
    Inventors: James Robert MISCHLER, Daniel Edward Loringer, Neil Xavier Blythe, Luke Henry, Matthew John Malone, Greg Thomas Polkus
  • Publication number: 20140041385
    Abstract: A reciprocating internal combustion engine includes a reciprocating piston in a cylinder bore of a cylinder housing forming an assembly together with a cylinder head. Two connecting rods are connected between the piston and first and second crankshafts. The two crankshafts are functionally connected to two synchronization gears of a spur gear box. The synchronization gears are connected to the crankshafts in a torque-proof manner such that the crankshafts rotate synchronously in opposite directions. The engine operates based on the diesel principle and with exhaust gas turbocharging, wherein the engine is an outboard engine for a watercraft. The exhaust gas turbocharger has an exhaust gas turbine and a compressor and/or a shaft which carries a turbine wheel and a compressor wheel which runs perpendicular to the longitudinal dimension of the watercraft. The turbocharger is attached on an upper end-face wall of the assembly.
    Type: Application
    Filed: August 6, 2013
    Publication date: February 13, 2014
    Applicant: Neander Motors AG
    Inventor: Ulrich WITTWER
  • Patent number: 8646271
    Abstract: An EGR control apparatus for an internal combustion engine, which is capable of accurately controlling an inert gas amount and an inert gas ratio of two types of EGR gas supplied to cylinders of the engine via two paths different from each other, thereby making it possible to ensure a stable combustion state and reduced exhaust emissions. The EGR control apparatus includes a low-pressure EGR device, a high-pressure EGR device, and an ECU. The ECU calculates a target low-pressure opening, calculates an estimated value of an in-cylinder low-pressure inert gas flow rate, which is the estimated value of an inert gas amount included in low-pressure EGR gas supplied to the cylinders via an intake passage, calculates a target high-pressure opening using the estimated value, and controls low-pressure and high-pressure EGR control valves, using the target low-pressure opening and the target high-pressure opening.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: February 11, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yuji Yasui, Eiji Hashimoto, Hisao Haga, Koichi Nakajima
  • Publication number: 20140033705
    Abstract: Various systems and method for controlling exhaust gas recirculation (EGR) in an internal combustion engine are provided. In one embodiment, a method includes during a first operating condition, directing exhaust gas from a first cylinder group into an engine air intake stream and directing substantially no exhaust gas from a second cylinder group to the engine air intake stream. The method further includes during a second operating condition, directing exhaust gas from the second cylinder group through a turbocharger bypass into the engine air intake stream and reducing a fuel injection amount of the first cylinder group relative to a fuel injection amount of the second cylinder group.
    Type: Application
    Filed: July 31, 2012
    Publication date: February 6, 2014
    Inventors: Neil Xavier Blythe, Shawn Michael Gallagher, James Robert Mischler, Luke Henry
  • Patent number: 8640457
    Abstract: A method includes substantially reducing specific fuel consumption and exhaust emissions of an engine by adjusting an exhaust flow from a set of predetermined cylinders among a plurality of cylinders of the engine through an exhaust gas recirculation system to an intake manifold, by adjusting a temperature of a cooler of the exhaust gas recirculation system, and by adjusting a fuel injection timing, in response to variance in a plurality of parameters of the engine.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: February 4, 2014
    Assignee: General Electric Company
    Inventors: Manoj Prakash Gokhale, Nilesh Vinayak Deshpande
  • Publication number: 20140026874
    Abstract: A method of controlling engine internal exhaust gas recirculation may include estimating a flow restriction through a diesel particulate filter in an exhaust system of an engine assembly and adjusting a backpressure control valve in the exhaust system downstream of the diesel particulate filter based on the flow restriction. A controlled amount of internal exhaust gas recirculation may be provided to the engine assembly based on adjusting the backpressure control valve.
    Type: Application
    Filed: July 24, 2012
    Publication date: January 30, 2014
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Charles Dean, Manuel Angel Gonzalez Delgado, Michael J. Lucido
  • Publication number: 20140026563
    Abstract: A two-stroke, opposed-piston engine with one or more ported cylinders and uniflow scavenging includes an exhaust gas recirculation (EGR) construction that provides a portion of the exhaust gasses produced by the engine for mixture with charge air to control the production of NOx during combustion.
    Type: Application
    Filed: September 27, 2013
    Publication date: January 30, 2014
    Applicant: Achates Power, Inc.
    Inventors: Eric P. Dion, lain J. L. Read, Fabien G. Redon, Gerhard Regner, Michael H. Wahl
  • Publication number: 20140020382
    Abstract: Systems, methods and techniques for exhaust gas recirculation are provided. The system includes mixing exhaust flow from at least one cylinder of an engine with air in an air intake system prior to combustion. 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.
    Type: Application
    Filed: July 23, 2012
    Publication date: January 23, 2014
    Inventors: Rajkumar Subramanian, Madhuri Gandikota, Marten H. Dane, Samuel C. Geckler, Sudhanshu Talwar
  • Publication number: 20140013740
    Abstract: An exemplary turbocharger system for an internal combustion engine is provided. The turbocharger system includes a first turbine and a second turbine. The first turbine is in fluid communication with the internal combustion engine. The first turbine receives a first portion exhaust gas discharged from the internal combustion engine and provides a first turbine exhaust gas. The second turbine is in fluid communication with the first turbine via an inter-stage channel. The inter-stage channel transports the first turbine exhaust gas from the first turbine to the second turbine. The inter-stage channel is in thermal connection with an exhaust gas recirculation channel defined between an inlet and an outlet of the internal combustion engine. The first turbine exhaust gas flowing through the inter-stage channel is capable of being heated by a second portion exhaust gas discharged from the internal combustion engine and flowing through the exhaust gas recirculation channel.
    Type: Application
    Filed: July 16, 2012
    Publication date: January 16, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Rodrigo Rodriguez Erdmenger, Cathal Clancy, Daniel Edward Loringer, Jassin Marcel Fritz, Neil Xavier Blythe, Lukas William Johnson, Sebastian Walter Freund, Pierre Sébastien Huck, Jonathan Edward Nagurney, Yu Du, Matthias Lang, Rudolf Konrad Selmeier, Elisa Jubany Arribas
  • Publication number: 20140013739
    Abstract: An engine assembly includes a camshaft having an exhaust cam lobe defining an exhaust lift region and an exhaust base circle region and an EGR cam lobe defining an EGR lift region and an EGR base circle region. The EGR lift region is rotationally offset from the exhaust lift region and the EGR base circle region is rotationally aligned with the exhaust lift region. An exhaust valve lift mechanism is engaged with an exhaust valve, the exhaust cam lobe and the EGR cam lobe and is operable in first and second modes. The exhaust valve remains closed when the EGR lift region engages the exhaust valve lift mechanism during the second mode and the exhaust valve is opened when the EGR lift region engages the exhaust valve lift mechanism during the first mode to provide exhaust gas flow into the combustion chamber during an intake stroke of the combustion chamber.
    Type: Application
    Filed: July 12, 2012
    Publication date: January 16, 2014
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Manuel Angel Gonzalez Delgado, Charles Dean, Joseph J. Moon
  • Publication number: 20140013741
    Abstract: Methods and systems are provided for regenerating a particulate filter in an engine exhaust, where burning of soot is initiated by introducing additional oxygen into the exhaust gas upstream of the particulate filter where an exhaust temperature exceeds a threshold, a soot burn rate controlled by adjusting pulsing of the additional oxygen. Further, the pulsing of the additional oxygen is introduced via a high-pressure EGR passage during boosted engine conditions.
    Type: Application
    Filed: June 20, 2013
    Publication date: January 16, 2014
    Inventors: Robert Ukropec, Alexey A. Dubkov, Christoph Boerensen, Elmar Riesmeier, Mario Balenovic, Brendan Patrick Carberry
  • Patent number: 8627661
    Abstract: The present concepts relate to turbocharger exhaust arrangements. One example involves a system that includes an internal combustion engine configured with a turbocharger. The system also includes an exhaust arrangement comprising a post-turbocharger (PT) exhaust pipe connected to the turbocharger and positioned proximate to the internal combustion engine, the PT exhaust pipe extending away from the turbocharger along the internal combustion engine. The PT exhaust pipe includes a first portion extending above at least one part of a set of header exhaust pipes connecting the internal combustion engine with the turbocharger. The PT exhaust pipe also includes one or more additional connected and contiguous portions extending below at least one other part of the set of header exhaust pipes.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: January 14, 2014
    Inventor: Steve Berg
  • Patent number: 8630787
    Abstract: Methods and products for controlling exhaust gas recirculation.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: January 14, 2014
    Assignee: BorgWarner Inc.
    Inventors: John Shutty, Volker Joergl, Volker Mueller, David B. Roth
  • Patent number: 8627660
    Abstract: In an internal combustion engine with a variable nozzle vane turbocharger, when the flow rate (VN passage flow rate) of exhaust gas passing through nozzle vanes has reached a spatial resonance region in an exhaust gas passage space between a turbine housing and a catalyst during acceleration, the flow rate is increased so that the spatial resonance region can be quickly passed. When the flow rate (VN passage flow rate) of exhaust gas passing through the nozzle vanes has reached the spatial resonance region during deceleration, the flow rate is decreased so that the spatial resonance region can be quickly passed. Such a control can reduce a period of time during which the frequency of pressure pulsation occurring at the rear ends of the nozzle vanes is amplified in the spatial resonance region, whereby noise caused by the pressure pulsation can be reduced.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: January 14, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Shinya Ito
  • Patent number: 8627662
    Abstract: A system for recovering heat from recirculating exhaust gases is provided. The system includes a first exhaust manifold in fluid communication with multiple combustion chambers of an engine. The system also includes a turbocharger having a turbine stage and a compressor stage, wherein the turbine stage comprises an inlet port in fluid communication with the first exhaust manifold and the compressor stage includes an inlet port for air intake and an outlet port for compressed air. The system includes an exhaust gas recirculation cooler having a first flow path and a second flow path, wherein the first flow path is configured to receive a portion of exhaust gas from the first exhaust manifold flowing through an exhaust gas recirculation loop. The second flow path includes an inlet for receiving a compressed air for drawing heat from the exhaust gas flowing through the first flow path.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: January 14, 2014
    Assignee: General Electric Company
    Inventors: Sebastian Walter Freund, Jassin Marcel Fritz
  • Patent number: 8621864
    Abstract: A method for controlling charge flow in an internal combustion engine includes operating an engine having a VGT. The method includes determining a target and current charge flow and EGR flow. The method further includes determining an error term for the charge flow and the EGR flow, and determining an exhaust pressure feedback command in response to the error terms. The exhaust pressure feedback command is combined with an exhaust pressure feedforward command, and the VGT is controlled in response to the exhaust pressure feedback command. The method additionally includes determining the exhaust pressure feedback command in response to a current EGR valve position. The method further includes controlling an EGR flow rate with the EGR valve at relatively closed EGR valve positions, and controlling the EGR flow rate with exhaust pressure at relatively open EGR valve positions.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: January 7, 2014
    Assignee: Cummins Inc.
    Inventors: Andrew W. Osburn, Mert Geveci, Martin T. Books
  • Publication number: 20140000256
    Abstract: In a turbine for an exhaust gas turbocharger having a turbine housing with a turbine rotor rotatable supported therein and including spiral channels for directing exhaust gas onto the turbine wheel, at least one annular blocking element is supported between the spiral channels and the turbine wheel so as to be rotatable in the peripheral direction of the turbine wheel and additionally movable in the axial direction of the turbine wheel for a controlling the exhaust gas flow to the turbine wheel between impulse turbine mode when extended into the space between the turbine wheel and the spiral chamber and an accumulation made when retracted, with the gas flow through the turbine wheel or by-passing the turbine wheel being adjustable by rotation of the blocking element.
    Type: Application
    Filed: August 9, 2013
    Publication date: January 2, 2014
    Applicant: DAIMLER AG
    Inventors: Torsten HIRTH, Siegfried SUMSER, Siegfried WEBER
  • Patent number: 8616186
    Abstract: Various systems and methods are described for an exhaust gas recirculation (EGR) system coupled to an engine in a vehicle. One example method comprises, calculating an EGR mass flow from a difference between measurements of clean air mass flow and total mass flow, and correcting for a transient mass flow error.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: December 31, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, Daniel Joseph Styles, Mrdjan J. Jankovic, Julia Helen Buckland, Amey Y. Karnik
  • Patent number: 8615997
    Abstract: A dynamic feedforward amount to realize a predetermined transient response characteristic by compensating a transient response characteristic of an engine having a Variable Nozzle Turbo (VNT) and an Exhaust Gas Recirculator (EGR) is calculated for a nozzle opening degree of the VNT and a valve opening degree of the EGR. The transient response characteristic of the engine responds to a setting value of an injection quantity or the like. Then, command values of the nozzle opening degree of the VNT and the valve opening degree of the EGR are calculated by using the dynamic feedforward amount. In the transient state, the followingness to the target value is improved.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: December 31, 2013
    Assignees: Fujitsu Limited, Transtron Inc.
    Inventors: Arata Ejiri, Jun Sasaki
  • Patent number: 8620499
    Abstract: After completion of warm-up of an engine, upon satisfaction of an exhaust gas recirculation condition by setting the drive mode of a hybrid vehicle to a normal mode according to the driver's accelerator operation, when a power difference ?Pe representing a decrease rate of a power demand Pe* required for the engine is less than a preset reference value ?, the engine and motors MG1 and MG2 are controlled to ensure output of a power equivalent to the power demand Pe* from the engine with prohibition for exhaust gas recirculation via an EGR valve and to ensure output of a torque equivalent to a torque demand Tr* to a ring gear shaft or an axle (steps S300 to S330 and step S390).
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: December 31, 2013
    Assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation
    Inventors: Mamoru Tomatsuri, Takeshi Harada
  • Publication number: 20130340427
    Abstract: An engine assembly may include an engine structure, an exhaust system, an intake system, a valvetrain assembly and an exhaust gas recirculation system. The engine structure may define a combustion chamber and intake and exhaust ports in communication with the combustion chamber. The exhaust system may include an exhaust conduit in communication with exhaust port. The intake system may include a turbocharger in communication with the exhaust conduit and the intake port. The valvetrain assembly may provide internal recirculation of exhaust gas within the combustion chamber. The exhaust gas recirculation system may include an EGR line extending from the exhaust conduit at a location between the turbocharger and an outlet of the exhaust conduit to the intake system and may provide communication between the intake and exhaust systems.
    Type: Application
    Filed: June 25, 2012
    Publication date: December 26, 2013
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Manuel Angel Gonzalez Delgado, Charles Dean
  • Publication number: 20130340424
    Abstract: Methods and systems for controlling operation of exhaust of an engine including a particulate filter are provided. One example method includes generating vacuum during engine operation, and storing the vacuum. The method further includes, during or after engine shutdown, drawing ambient air through the particulate filter via the vacuum.
    Type: Application
    Filed: August 27, 2013
    Publication date: December 26, 2013
    Applicant: Ford Global Technologies, LLC
    Inventor: Michiel J. Van Nieuwstadt
  • Publication number: 20130340428
    Abstract: A variable flow valve with position feedback is disclosed. The variable flow valve includes a housing having an inlet port and a discharge port and one or more control ports, and also includes a piston connected to a primary valve to open and close fluid communication between an inlet port and a discharge port of the housing. The housing and the piston intermesh to define an inner chamber and an outer chamber each in fluid communication with its own control port. A control port valve opens and closes at least one of the control ports to control access to a source of pressure change. A position sensor is part of the position feedback and communicates the position of the primary valve, relative to the discharge port, to a controller that operates the control port valve to hold the primary valve in a position where the discharge port is partially open.
    Type: Application
    Filed: June 19, 2013
    Publication date: December 26, 2013
    Applicant: DAYCO IP HOLDINGS, LLC
    Inventors: Brian Graichen, Dave Fletcher, Craig Markyvech
  • Patent number: 8607564
    Abstract: An automobile-mount diesel engine with a turbocharger is provided, which includes an engine body with the turbocharger, the engine body being mounted in the automobile and supplied with fuel containing diesel fuel as its main component, a fuel injection valve arranged in the engine body so as to be oriented toward a cylinder of the engine body and for directly injecting the fuel into the cylinder, an injection control module for controlling a mode of injecting the fuel into the cylinder through the fuel injection valve, and an EGR amount control module for adjusting an amount of EGR gas introduced into the cylinder. EGR and fuel injection are adjusted based on speed-load conditions of the engine.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: December 17, 2013
    Assignee: Mazda Motor Corporation
    Inventors: Keiji Maruyama, Masaki Ushitani
  • Patent number: 8601813
    Abstract: One embodiment may include a method of controlling exhaust gas recirculation (EGR) in a turbocharged compression-ignition engine system including a high pressure (HP) EGR path and a low pressure (LP) EGR path. The method may include determining a target total EGR fraction for compliance with exhaust emissions criteria, and determining a target HP/LP EGR ratio to optimize other engine system criteria within the constraints of the determined target total EGR fraction. The determining of the target HP/LP EGR ratio may include using at least engine speed and load as input to a base model to output a base EGR value, using at least one other engine system parameter as input to at least one adjustment model to output at least one EGR adjustment value, and adjusting the base EGR value with the at least one EGR adjustment value to generate at least one adjusted EGR value.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: December 10, 2013
    Assignee: BorgWarner Inc.
    Inventors: John Shutty, Volker Joergl
  • Patent number: 8601811
    Abstract: A method for adjusting an exhaust heat recovery valve is presented. In one embodiment, the method may control an amount of boost provided by a turbocharger to an engine.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: December 10, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Joseph Norman Ulrey
  • 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: 8596252
    Abstract: While an engine (10, 10A, 10B, 10C, 10D, 10E) is operating, a control system (22) processes data for certain engine operating parameters to calculate a quantity of exhaust gas needed to satisfy an exhaust gas recirculation requirement. If a primary EGR control loop (34) alone can satisfy the calculated quantity of exhaust gas, a secondary EGR control loop (36) is closed while the primary EGR control loop is controlled to satisfy the calculated quantity. When the processing determines that the primary EGR control loop alone cannot satisfy the calculated quantity, the secondary EGR control loop is open concurrently with the primary EGR control loop and both the primary EGR loop and the secondary EGR loop are controlled to cause the combined flow of exhaust gas through the primary EGR control loop and flow of exhaust gas through the secondary EGR control loop to satisfy the calculated quantity.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: December 3, 2013
    Assignee: International Engine Intellectual Property Company, LLC
    Inventors: Zhengbai Liu, Ning Lei, Jincai Zheng, Robert L. Rowells
  • Patent number: 8590494
    Abstract: An arrangement for controlling cooling of a gas for a supercharged combustion engine includes a low temperature cooling system with a coolant, a coolant pump circulating the coolant in the cooling system, a cooler in which a gas containing water vapor is cooled by the coolant, at least one sensor for detecting a parameter indicating whether the gas is cooled so much that there is at least risk of ice formation in the cooler, and a control unit receiving information from the sensors and deciding whether there is at least risk of ice formation in the cooler and, if so, controlling the coolant pump to be temporarily switched off or to circulate a lower than normal flow of coolant through the cooler.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: November 26, 2013
    Assignee: Scania CV AB
    Inventors: Zoltan Kardos, Erik Söderberg
  • Patent number: 8590599
    Abstract: A cooler arrangement comprising a charge air cooler which comprises at least one first pipeline for guiding compressed air during cooling and a tank which receives the cooled compressed air via an outlet aperture from the first pipeline, and an EGR cooler which comprises at least one second pipeline for guiding exhaust gases during cooling and a tank which receives the cooled exhaust gases from an outlet aperture of the second pipeline. The cooler arrangement comprises a tubular element extending from the EGR cooler's tank to the charge air cooler's tank. The tubular element has an outlet aperture for exhaust gases which is situated downstream of the most downstream outlet aperture in the charge air cooler's tank with respect to the main direction of flow of the air in the tank.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: November 26, 2013
    Assignee: Scania CV AB (publ)
    Inventors: Zoltan Kardos, Henrik Nyren
  • Publication number: 20130305716
    Abstract: Methods and systems are provided for reducing turbo lag in a boosted engine. A boost reservoir coupled to the engine may be charged with compressed intake air and/or combusted exhaust gas. The pressurized charge may then be discharged during a tip-in to either the intake or the exhaust manifold.
    Type: Application
    Filed: May 17, 2012
    Publication date: November 21, 2013
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: John Eric Rollinger, Adam J. Richards, Robert Andrew Wade, Alex O'Connor Gibson, David Bell
  • Publication number: 20130305717
    Abstract: A self-propelled construction device, in particular a soil compactor, includes a turbocharged diesel engine with a first radiator arrangement for cooling charge air and a second radiator arrangement for cooling a cooling liquid and/or hydraulic oil, with a first radiator fan being allocated to the first radiator arrangement and a second radiator fan being allocated to the second radiator arrangement and the first radiator fan and the second radiator fan being able to be operated essentially independently from each other.
    Type: Application
    Filed: March 7, 2012
    Publication date: November 21, 2013
    Applicant: HAMM AG
    Inventors: Andreas Roehr, Thomas Bletscher, Michael Zimmerer
  • Publication number: 20130305715
    Abstract: Methods and systems are provided for reducing turbo lag in a boosted engine. A boost reservoir coupled to the engine may be charged with compressed intake air and/or combusted exhaust gas. The pressurized charge may then be discharged during a tip-in to either the intake or the exhaust manifold.
    Type: Application
    Filed: May 17, 2012
    Publication date: November 21, 2013
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: John Eric Rollinger, Brien Lloyd Fulton, Freeman Carter Gates, Adam J. Richards
  • Patent number: 8584458
    Abstract: A power plant includes an engine configured to receive charge air and produce exhaust. A first turbo machine is configured to be driven by the exhaust and drive a compressor that receives air. The compressor is configured to produce the charge air. A second turbo machine is configured to receive a portion of the exhaust and rotationally drive a pump in response thereto. High temperature and low temperature EGR heat exchangers are arranged in the exhaust gas recirculation passage serially relative to one another upstream from the pump. A heat exchanger arranged in the exhaust gas recirculation passage upstream from the pump. A water separator is arranged in the exhaust gas recirculation passage fluidly between the heat exchanger and the pump. An EGR catalyst is arranged in the exhaust gas recirculation passage upstream from the heat exchanger.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: November 19, 2013
    Assignee: AVL Powertrain Engineering, Inc.
    Inventors: Ho Teng, Gerhard Regner, Gary Hunter
  • Publication number: 20130298552
    Abstract: Series-sequential turbocharging systems and related methods are disclosed herein for boosting the intake pressure of an internal combustion engine, such as a split-cycle engine that operates in accordance with a Miller cycle. In some embodiments, a multi-stage turbocharging system is used in which a small flow capacity turbocharger with an associated turbine bypass valve is incorporated in series with a larger turbocharger and an aftercooler. At low engine speeds, the bypass valve is closed and the small flow capacity turbocharger performs the bulk of the compression work. At high engine speeds, the bypass valve is opened and the larger turbocharger performs the bulk of the compression work. The bypass valve can be modulated when the engine is operated at transitional speeds. Using this series-sequential turbocharging system, the boost and flow range required for optimal efficiency and performance can be met across the engine's speed range.
    Type: Application
    Filed: May 1, 2013
    Publication date: November 14, 2013
    Inventors: David Branyon, Dean Jacob Simpson