With Exhaust Gas Recirculation Patents (Class 60/605.2)
  • 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: 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: 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: 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: 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: 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: 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
  • 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
  • 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
  • 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
  • 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: 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: 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: 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: 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: 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: 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
  • 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: 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
  • 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
  • Publication number: 20130298553
    Abstract: An exhaust gas recirculation apparatus for heavy construction equipment of the present disclosure, includes: a hybrid EGR line which introduces a part of exhaust gas from an exhaust manifold into a compressor so as not to pass through a turbine; and a hybrid EGR valve which is provided in the hybrid EGR line, and controlled to be opened and closed so that a part of the exhaust gas discharged from the exhaust manifold is introduced into an inlet of the compressor.
    Type: Application
    Filed: November 10, 2011
    Publication date: November 14, 2013
    Applicant: DOOSAN INFRACORE CO., LTD.
    Inventors: Ji Hoon Lim, Tae Joong Wang
  • Patent number: 8572962
    Abstract: An exhaust gas recirculation system is provided that includes an internal combustion engine, which is supplied with exhaust gas, diverted at a removal point and returned via a return point and/or charge air, having a heat exchanger arranged between the removal point and the return point, for the returned exhaust gas and/or the charge air, and having an exhaust gas recirculation valve, by means of which the amount of returned exhaust gas and/or charge air can be regulated. To provide an exhaust gas recirculation system, which has a simple structure and can be manufactured cost-effectively, the exhaust gas recirculation valve is connectable between the removal point and the heat exchanger.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: November 5, 2013
    Assignees: Behr GmbH & Co. KG, Behr France Rouffach SAS
    Inventors: Hans-Ulrich Steurer, Eberhard Pantow, Jérôme Genoist
  • Patent number: 8572961
    Abstract: Various systems and methods for controlling a turbocharger of an engine via a wastegate are described. In one example, actuation of the wastegate is limited when outside a range, the limits of the range varying with boost pressure, turbine inlet pressure, turbine outlet pressure, and atmospheric pressure. In this manner, a tracking error may be reduced when controlling the boost pressure and using the boost pressure to actuate the wastegate in a boost-based wastegate configuration.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: November 5, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Amey Y. Karnik, Julia Helen Buckland
  • Publication number: 20130283788
    Abstract: An axis (45c) of an EGR pipe (45) on an outlet end side three-dimensionally crosses an axis (29c) of an intake pipe (29) so as to create inside the intake pipe (29) a swirl flow of an EGR gas having a swirling component in the same direction as a rotating direction of a compressor impeller (17). The EGR pipe (45) includes an EGP flow restricting portion (53) which is provided with a flow passage area gradually reduced toward the intake pipe (29), in its outlet end side portion. A downstream flow restricting portion (55) is formed at a portion in the intake pipe (29) on an immediately downstream side of a junction with the EGR pipe (45). The downstream flow restriction portion (55) has a flow passage area which becomes gradually smaller toward the compressor (13).
    Type: Application
    Filed: November 8, 2011
    Publication date: October 31, 2013
    Applicant: IHI Corporation
    Inventor: Yuji Kobayashi
  • Publication number: 20130283789
    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: Application
    Filed: June 27, 2013
    Publication date: October 31, 2013
    Inventors: Ross Dykstra Pursifull, Joseph Norman Ulrey
  • Patent number: 8567189
    Abstract: Systems and methods for operating a twin scroll turbocharged engine with a junction configured to selectively control exhaust gas delivery to an exhaust gas recirculation system and a twin scroll turbine are provided.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: October 29, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Daniel Joseph Styles, Brad Alan Boyer, Lawrence Marshall, James Leiby
  • Patent number: 8561404
    Abstract: Turbocharger supercharged internal combustion engine, of which the exhaust manifold (22) comprises a first outlet (20) constantly supplying a turbine (18) for driving a compressor (12), a second outlet (34) equipped with means of sealing (36) synchronized with the rotation of the engine in order to supply a recycling conduit (46) of exhaust gas and a third outlet connected by a by-pass conduit (58) at the outlet of the turbine (18).
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: October 22, 2013
    Inventor: Jean Frederic Melchior
  • Publication number: 20130269341
    Abstract: A multi-stage supercharging apparatus including a first supercharger and a second supercharger. The first supercharger is provided with a first turbine accommodating section, a first exhaust inlet, and a first exhaust outlet which extends in an axial direction of the first turbine from the first turbine accommodating section and is bent upward. The second supercharger is provided with a second turbine, a second turbine accommodating section, and a second exhaust inlet which is directly connected to the first exhaust outlet to allow the first exhaust outlet to be communicated with the second turbine accommodating section, and the second supercharger is supported by the first supercharger by placing an opening of the second exhaust inlet on an opening of the first exhaust outlet.
    Type: Application
    Filed: December 7, 2011
    Publication date: October 17, 2013
    Inventors: Iori Kurata, Shinobu Uno, Kazutaka Ooishi
  • Patent number: 8555638
    Abstract: An internal combustion engine includes a plurality of combustion cylinders, at least one turbocharger, an air supply line, an exhaust gas line and an exhaust gas recirculation system. An exhaust manifold of the exhaust gas line may have both non-direction specific and modular pulse exhaust manifold elements. If the internal combustion engine has dual cylinder banks, an exhaust gas balance tube may extend between exhaust gas lines of the cylinder banks and be fluidly connected to an exhaust manifold between the ends thereof.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: October 15, 2013
    Assignee: Caterpillar Inc.
    Inventors: Aaron Luft, Lucian Stanciu, Catalin Tiru, Jeremy Byrd
  • Patent number: 8555864
    Abstract: An internal combustion engine has a high-pressure exhaust-gas recirculation line and a low-pressure exhaust-gas recirculation line with a low-pressure exhaust-gas recirculation valve. The low-pressure exhaust-gas recirculation line branches off from the exhaust-gas system downstream of a turbine of an exhaust-gas turbocharger and opens into a fresh-air system upstream of a compressor of the exhaust-gas turbocharger. An exhaust-gas flap is disposed in the exhaust-gas system downstream from where the low-pressure exhaust-gas recirculation line branches off from the exhaust-gas system. At least one pressure sensor is disposed in the low-pressure exhaust-gas recirculation line and configured such that the at least one pressure sensor determines a pressure difference in the low-pressure exhaust-gas recirculation line between a point upstream of the low-pressure exhaust-gas recirculation valve and a point downstream of the low-pressure exhaust-gas recirculation valve.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: October 15, 2013
    Assignee: Volkswagen Aktiengesellschaft
    Inventors: Hans-Georg Nitzke, Jörg Larink, Jens Jeschke, Thomas Lang, Jürgen Wendt, Achim Freitag, Jörn Müller, Axel Groenendijk, Lothar Nee, Uwe Scher, Werner Aberle, Dieter Mannigel
  • Patent number: 8560206
    Abstract: By using a model of a transient response characteristic of an engine and a model of a steady-state characteristic of the engine, a disturbance estimate value is calculated. By using this disturbance estimate value, initial command values of a nozzle opening degree of a Variable Nozzle Turbo and a valve opening degree of a Exhaust Gas Recirculator are adjusted in order to reduce model errors and appropriately handle the disturbance. Hence, it is possible to cause Mass Air Flow and Manifold Air Pressure to follow their target values stably.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: October 15, 2013
    Assignee: Fujitsu Limited
    Inventors: Arata Ejiri, Tsugito Maruyama
  • Publication number: 20130263593
    Abstract: In an exemplary embodiment, an internal combustion engine includes an oxidation catalyst configured to receive an exhaust gas flow from the internal combustion engine, a urea injector positioned downstream of the oxidation catalyst to inject a urea flow into the exhaust gas flow and a mixer positioned downstream of the urea injector to mix the exhaust gas flow and the urea flow to form a mixed exhaust gas and urea flow. The engine also includes a particulate filter and catalytic reduction assembly positioned downstream of the mixer to receive the mixed exhaust and urea flow from the mixer to form a treated exhaust gas flow and an exhaust gas recirculation system coupled to the particulate filter to receive a portion of the treated exhaust gas flow and recirculate the portion of the exhaust gas flow to be mixed with a fresh air flow for the internal combustion engine.
    Type: Application
    Filed: April 5, 2012
    Publication date: October 10, 2013
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: MANUEL ANGEL GONZALEZ DELGADO, JULIAN C. TAN, JOSHUA CLIFFORD BEDFORD, YONG MIAO, NASER I. HINEITI, STEVEN M. YOCUM
  • Patent number: 8549854
    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: Grant
    Filed: May 16, 2011
    Date of Patent: October 8, 2013
    Assignee: Achates Power, Inc.
    Inventors: Eric P. Dion, Iain J. L. Read, Fabien G. Redon, Gerhard Regner, Michael H. Wahl
  • Patent number: 8549855
    Abstract: The invention relates to a method for supplying a compressor in an internal combustion engine with compressed air. The method has the following steps: determination of operating parameters of the internal combustion engine to identify operating states of the internal combustion engine; production of compressed air by the internal combustion engine using the determined operating parameter in an operating state without combustion and backing up of the compressed air using a throttle; and removal of the produced compressed air to supply the compressor. The invention also relates to a corresponding device.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: October 8, 2013
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventor: Mathias Mayr
  • Publication number: 20130255251
    Abstract: Internal combustion engine system includes an electric supercharger which supercharges sucked air; a throttle valve which adjusts the flow amount of intake air of supercharged air into a cylinder; an EGR path in which a part of exhaust gas exhausted from the exhaust manifold side is recirculated to the intake manifold side; an EGR valve which adjusts the amount of exhaust gas passing through the EGR path; and an internal combustion engine control unit which controls the throttle valve, the EGR valve, and the electric supercharger. This enables to satisfy both performance of the supercharger and fuel consumption of the internal combustion engine without complicating the structure of EGR.
    Type: Application
    Filed: January 22, 2013
    Publication date: October 3, 2013
    Inventors: Hideyuki Tanaka, Yohei Akashi
  • Patent number: 8544269
    Abstract: An engine (100) provided with a variable series supercharging system (7) composed of a high-pressure supercharger (10) and a low-pressure supercharger (20), a supercharging pressure sensor (63) for detecting the pressure of intake air pressurized by the variable series supercharging system (7), a high-pressure supercharger rotation sensor (61) for detecting the rotational speed of the high-pressure supercharger (10), a variable actuator (14) for adjusting the capacity of the high-pressure supercharger (10), and a control device (60) capable of controlling the variable actuator (14). The control device (60) controls the variable actuator (14) based on detection signals from the supercharging pressure sensor (63) and the high-pressure supercharger rotation sensor (61).
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: October 1, 2013
    Assignee: Yanmar Co., Ltd.
    Inventors: Takeshi Takahashi, Hidenori Nomura, Kazuki Maetani, Terumitsu Takahata, Takao Kawabe, Kazuhiro Takenaka
  • Publication number: 20130247567
    Abstract: The present disclosure provides systems and methods for adjusting an exhaust gas recirculation rate to provide accurate air-fuel ratio. The disclosure provides a method for calculating an exhaust-gas recirculation rate based on a measured exhaust-gas lambda and a turbocharger speed. Through the use of the exhaust-gas lambda and the turbocharger speed it is possible to calculate an exhaust-gas recirculation rate while dispensing with the difficult and unreliable determination of the mass air flow for determining an exhaust-gas recirculation rate, thus providing a stable method which further reduces fuel consumption and emissions.
    Type: Application
    Filed: March 21, 2013
    Publication date: September 26, 2013
    Applicant: Ford Global Technologies, LLC
    Inventors: Simon Petrovic, Laurence Hatfield, Christian Winge Vigild, Jon Dixon
  • Patent number: 8543317
    Abstract: A method is provided for estimating the relative humidity in an intake line of an internal combustion engine provided with an intake manifold connected to the intake line, an exhaust line, and a Low Pressure EGR (LPE) conduit which fluidly connects the exhaust line to a connecting point of said intake line. The method includes, but is not limited to calculating specific humidity in the exhaust line, as a function of the O2 concentration in said exhaust line; determining ambient specific humidity; calculating specific humidity in a portion of the intake line comprised between said connecting point and said intake manifold, as a function of a flow of external air entering into said intake line, a flow of exhaust gases coming from said Low Pressure EGR (LPE) conduit, the specific humidity in said exhaust line and the ambient specific humidity; calculating the relative humidity in said portion of the intake line, as a function of the specific humidity thereof.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: September 24, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Paolo Pasero, Alberto Vassallo, Federico Luigi Guglielmone
  • Patent number: 8539768
    Abstract: A turbocharger assembly for an internal combustion engine includes a bypass valve for controlling a flow of exhaust gas from a second group of exhaust ports of a cylinder head assembly. When disposed in an open position, the bypass valve allows exhaust gas from the second group of exhaust ports to combine with exhaust gas from a first group of exhaust ports to spin a turbine of the turbocharger assembly. When disposed in a closed position, the bypass valve forces the exhaust gas from the second group of exhaust ports through an Exhaust Gas Recirculation (EGR) passage to an intake manifold to establish a dedicated EGR system.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: September 24, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Alan W. Hayman, Rodney E. Baker
  • Patent number: 8539770
    Abstract: An internal combustion engine including an exhaust arrangement comprises a first exhaust duct and a second exhaust duct. A valve arrangement preferably comprising separate first and second exhaust valves associated with each cylinder, to selectively direct exhaust from engine to the first exhaust duct during a first exhaust period, and to the second exhaust duct during a subsequent second exhaust period. A turbine having an inlet is connected to the first exhaust duct; and a compressor drivingly connected to and driven by the turbine, has an inlet connected to second duct. The compressor, driven by the turbine extracting energy from the exhaust, reduces the back pressure in the exhaust system reducing pumping losses, with the second duct bypassing the turbine in the second exhaust period such that the turbine also does not increase the exhaust back pressure at least during the main second exhaust phase.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: September 24, 2013
    Assignee: Loughborough University
    Inventor: Andrew Morgan Williams
  • Patent number: 8534047
    Abstract: A method including obtaining information representative of the amount of oxides of nitrogen and the amount of particulate matter being produced by a combustion engine, and adjusting the amount of oxides of nitrogen and the amount of particulate matter being produced by the combustion engine by controlling the amount of combustion engine exhaust gas re-circulating through an EGR cooler and through an EGR cooler bypass line using the information.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: September 17, 2013
    Assignee: BorgWarner Inc.
    Inventors: Robert D. Keefover, Murray F. Busato, Matt Delavan
  • Patent number: 8534065
    Abstract: A method for providing air to a combustion chamber of an engine, the engine including a compressor and a boost tank selectably coupled to an intake manifold. The method includes varying a relative amount of engine exhaust in air pressurized in the boost tank based on engine operating conditions, and discharging the air pressurized in the boost tank to the intake manifold.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: September 17, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Ralph Wayne Cunningham, Gopichandra Surnilla
  • Publication number: 20130232971
    Abstract: Systems and methods for controlling compressor inlet flow in a turbocharger of an engine are described. In one example, a method for controlling a compressor inlet flow of an engine turbocharger system comprises: directing air from a high pressure source to an inlet upstream of a compressor wheel via a conduit coupled to the inlet and the high pressure source, where the conduit is obliquely coupled to the inlet.
    Type: Application
    Filed: March 12, 2012
    Publication date: September 12, 2013
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Keith D. Miazgowicz, Ahsanul Karim, Kevin Payne, Adam Michael Christian