With Exhaust Gas Recirculation Patents (Class 60/605.2)
  • Patent number: 8919123
    Abstract: A waste heat recovery apparatus for use with an internal combustion engine includes a working fluid circuit having a first heating line and a second heating line parallel to the first heating line, a first heat exchanger in the first heating line operatively connected to transfer heat energy to the working fluid from a waste exhaust flow of an internal combustion engine, a second heat exchanger in the second heating line operatively connected to transfer heat energy to the working fluid from recirculating exhaust gas the internal combustion engine, and a recuperative heat exchanger operatively connected to transfer heat energy to the working fluid in the first heating line from the working fluid at a junction of an expander outlet and condenser inlet.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: December 30, 2014
    Assignee: Mack Trucks, Inc.
    Inventors: John Gibble, Arne Andersson
  • Publication number: 20140373528
    Abstract: A fixed positive displacement exhaust gas recirculation (EGR) system includes an intake manifold in fluid communication with a fresh intake air source, an exhaust manifold, and an engine having at least one EGR cylinder and at least one non-EGR cylinder. The at least one EGR cylinder is in fixed fluid communication with the intake manifold such that substantially all of the exhaust gas flows from the at least one EGR cylinder to the intake manifold, and the at least one non-EGR cylinder is in communication with the exhaust manifold such that exhaust gas flows from the at least one non-EGR cylinder into the exhaust manifold.
    Type: Application
    Filed: June 20, 2013
    Publication date: December 25, 2014
    Applicant: PACCAR INC
    Inventors: Michael Gerty, Costi Nedelcu
  • Publication number: 20140373820
    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: Application
    Filed: September 10, 2014
    Publication date: December 25, 2014
    Inventors: Ross Dykstra Pursifull, Joseph Norman Ulrey
  • Patent number: 8915082
    Abstract: An engine is described having an engine control unit and two or more hydraulically operated wheels, wherein a fluid is flowed from an accumulator to the engine via the first wheel to assist in acceleration of the turbocharger in response to an acceleration signal from the engine control system and wherein the fluid is flowed from the engine to the accumulator via the second wheel to decelerate the turbocharger in response to a deceleration signal from the engine control unit. In one particular embodiment, the second wheel absorbs energy from the turbocharger in response to the deceleration signal from the engine control unit to decelerate the turbocharger. In some embodiments, the hydraulically operated wheels may be positioned on the same shaft of, and between, the turbine and compressor of the turbocharger.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: December 23, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Harold Huimin Sun, David R. Hanna, Michael Levin, Eric Warren Curtis, F. Zafar Shaikh
  • Patent number: 8915081
    Abstract: An internal combustion engine comprises a compressor disposed in an intake system configured to compress combustion air and deliver it to cylinders of the engine. A compressor inlet assembly has a combustion air inlet, in fluid communication with, and configured to receive combustion air from the intake system. A combustion air passage extends through the assembly to an outlet located downstream of the inlet and is configured for fluid communication with the compressor. An EGR mixing conduit is disposed within the compressor inlet assembly and has an EGR inlet configured for fluid communication with, and receipt of EGR from, an EGR supply conduit. An EGR passage extends from the EGR inlet to an EGR supply annulus disposed about the combustion air inlet opening and a plurality of EGR ports extend between the EGR supply annulus and the combustion air passage for delivery of EGR thereto.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: December 23, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Alan W. Hayman, Rodney E. Baker
  • Publication number: 20140366532
    Abstract: Systems and methods for internal combustion engine operation with exhaust gas recirculation and turbocharging are disclosed. The systems include an exhaust gas recirculation loop for recirculating exhaust gas flow from a first portion of the cylinders of the engine into an intake system prior to combustion. The system further includes a turbine with first and second inlets for receiving exhaust gas flows from respective first and second parts of the exhaust gas of the remaining portion of the cylinders.
    Type: Application
    Filed: June 13, 2013
    Publication date: December 18, 2014
    Inventors: Sudhanshu Talwar, Samuel C. Geckler, Marten H. Dane
  • Publication number: 20140366533
    Abstract: A supercharger-equipped internal combustion engine in the present invention includes a turbo-supercharger (20) which includes, at some point in an intake passage (26), a centrifugal compressor (20b) having an impeller section (20b4) for housing a compressor impeller (20b3). In the supercharger-equipped internal combustion engine, EGR gas and blow-by gas are introduced into an intake system in such a way as to flow into the centrifugal compressor (20b) via an EGR gas introduction section (40a) and a blow-by gas introduction section (48a). The supercharger-equipped internal combustion engine further includes a partition wall (52) which guides the EGR gas and the blow-by gas toward the centrifugal compressor (20b) so that the EGR gas and the blow-by gas are not mixed with each other until the EGR gas and the blow-by gas enter into the impeller section (20b4).
    Type: Application
    Filed: November 18, 2011
    Publication date: December 18, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Jumpei Shioda
  • Patent number: 8910476
    Abstract: An exhaust gas condensate control method includes selecting modeling objects from the exhaust gas recirculation (EGR) system, acquiring control factors from the modeling objects, such as mass, temperature, pressure, absolute humidity, relative humidity, partial water vapor pressure of the exhaust gas and a gas mixture, calculating an estimated relative humidity value, a desired relative humidity value from estimated relative humidity value, and an allowable relative humidity limit and a current relative humidity value of the EGR system, and precluding production of condensate in the EGR system by feedback-controlling the intake air flow rate of a mixing pipe line, the opening amount of an LP-EGR (low pressure) valve, and boost pressure by using an applied control value compensating the desired relative humidity value. An EGR system may be an LP-EGR type or an HP-EGR (high pressure)+LP-EGR type.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: December 16, 2014
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Kihoon Nam, Jinsuk Kang
  • Publication number: 20140360186
    Abstract: A method for desulphurizing an exhaust-gas recirculation flow of an internal combustion engine supplied to the internal combustion engine on the fresh-air side includes branching a partial exhaust-gas flow from the exhaust-gas flow of the internal combustion engine. At least one reactant is supplied to the partial exhaust-gas flow that splits to form ammonia, and the thus laden partial exhaust-gas flow is supplied partially, as an exhaust-gas recirculation flow, to the fresh-air side and partially, as an aftertreatment partial flow, to an exhaust-gas aftertreatment system. The flow rate of the exhaust-gas recirculation flow supplied to the fresh-air side and the flow rate of the aftertreatment partial flow supplied to the exhaust gas aftertreatment system are predefined and/or varied by a regulating device as a function of at least one operating parameter that defines the respective operating state of the internal combustion engine.
    Type: Application
    Filed: May 21, 2014
    Publication date: December 11, 2014
    Inventor: Andreas DOERING
  • Patent number: 8904786
    Abstract: An internal combustion engine comprises a four stroke working cylinder, a four stroke EGR cylinder, an intake system for supplying a combustion air charge to the cylinders, a first exhaust system for removing exhaust gas from the four stroke working cylinder and to the atmosphere and a second exhaust system for removing exhaust from the four stroke EGR cylinder and to the intake system, wherein the combustion air charge is a combination of combustion air and exhaust gas from the four stroke EGR cylinder.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: December 9, 2014
    Assignee: GM Global Technology Operations LLC
    Inventor: Alan W. Hayman
  • Patent number: 8904787
    Abstract: A method is provided for controlling EGR flow in turbocharged engine. The method comprises operating a low-pressure exhaust gas recirculation (LP-EGR) system at a fixed EGR percentage rate of fresh airflow from mid-load down to a minimum engine load, even as load changes. In this way, errors in the delivered LP-EGR rate during transient conditions may be alleviated by providing a fixed EGR percentage of fresh airflow at all engine loads within a fixed mode range.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: December 9, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Daniel Joseph Styles, James Hilditch, William Charles Ruona
  • Publication number: 20140352298
    Abstract: An exhaust circulation apparatus that can improve fuel combustion and suppress discharged NOx by expanding an operating region in which homogeneous lean combustion is possible. The exhaust circulation apparatus includes a homogeneous lean combustion unit for performing homogeneous lean combustion in a predetermined lean-burn region, and an EGR apparatus for performing EGR that recirculates a portion of gas that flows through an exhaust system of the internal combustion engine to an intake system. When performing homogeneous lean combustion, the exhaust circulation apparatus controls the EGR apparatus to perform EGR. An LPL-EGR apparatus that recirculates gas flowing through an exhaust passage on a downstream side of a turbine to an intake passage on an upstream side of a compressor is used as the EGR apparatus. Preferably, an air-fuel ratio is controlled so as to be 22 and an EGR rate is controlled so as to be between 10% and 20%.
    Type: Application
    Filed: January 24, 2012
    Publication date: December 4, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shinichiro Nogawa
  • Patent number: 8899016
    Abstract: An integrated water-gas-shift (WGS) and emissions control device (ECD) catalyst for treating exhaust from an internal combustion engine. The engine is assumed to have an EGR loop, such that exhaust is recirculated back to the engine's intake. A WGS catalyst on the EGR loop, for conditioning the EGR flow, is integrated with a catalyzed ECD on the main exhaust line, for reducing pollutant emissions.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: December 2, 2014
    Assignee: Southwest Research Institute
    Inventors: Jess W. Gingrich, Steven H. Almaraz
  • Patent number: 8893493
    Abstract: An exhaust system for a turbocharged internal combustion engine comprises a first exhaust conduit extending between a first engine cylinder and a turbocharger inlet and is configured to conduct exhaust gas therebetween. A second exhaust conduit extends between a second engine cylinder and an in inlet for an exhaust gas recirculation system and is configured to conduct exhaust therebetween. An exhaust gas bypass extends between, and is in fluid communication with, the first and second exhaust conduits and is configured to divert exhaust gas flowing through the second exhaust gas conduit to the first exhaust gas conduit, and the turbocharger inlet, under conditions of varying exhaust gas recirculation demand of the internal combustion engine.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: November 25, 2014
    Assignee: GM Global Technology Operations LLC
    Inventor: Gary J. Arvan
  • Patent number: 8893494
    Abstract: An internal combustion engine includes a plurality of cylinders, an air intake line and an exhaust line collecting exhaust gas. The engine also includes an EGR line for rerouting a part of the exhaust gas from the exhaust line towards the air intake line and at least a first turbocharger comprising a first turbine driven by the exhaust gas flowing towards the atmosphere, linked to a first compressor located on the air intake line. The engine further includes a variable geometry EGR turbine located on the EGR line, driven by the EGR gas flowing in the EGR line. Thus, thanks to the pressure reduction occurring in the turbine, the EGR gas temperature is lowered, and less cooling power from the engine cooling system is required to cool down the EGR.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: November 25, 2014
    Assignee: Renault Trucks
    Inventors: Nicolas Auffret, Nicolas Dronniou
  • Publication number: 20140338328
    Abstract: A turbine includes a turbine housing having two gas passages of substantially the same flow area. A nozzle ring is disposed in the housing and around the turbine wheel. The nozzle ring includes first and second outer rings, and an inner ring disposed between the first and second outer rings. First and second pluralities of vanes are disposed between the rings. The second outer ring has a thicker cross section than the first outer ring such that a larger flow area is created between the first outer ring and the inner ring than a flow area created between the second outer ring and the inner ring.
    Type: Application
    Filed: May 17, 2013
    Publication date: November 20, 2014
    Applicant: Caterpillar Inc.
    Inventors: Christopher Lusardi, Richard W. Kruiswyk, Kerry A. Delvecchio, Matthew T. Wolk, Rohan Swar, Carl-Anders Hergart
  • Patent number: 8892332
    Abstract: A system and method are provided for estimating the operating speed of a turbocharger. A first pressure value corresponds to pressure at or near the air inlet of the compressor, and a second pressure value corresponds to pressure at or near the air outlet of the compressor. A temperature value corresponds to a temperature at or near the air inlet of the compressor, and a flow rate value corresponds to a flow rate of air entering the air inlet of the compressor. The operating speed of the turbocharger is estimated as a function of the first pressure value, the second pressure value, the temperature value and the flow rate value.
    Type: Grant
    Filed: September 25, 2011
    Date of Patent: November 18, 2014
    Assignee: Cummins, Inc.
    Inventors: John N. Chi, John M. Mulloy, Sriram S. Popuri
  • Publication number: 20140331668
    Abstract: An engine system, comprising a first gaseous fuel source with a first gaseous fuel located therein coupled to one or more engine cylinders and an exhaust gas recirculation (EGR) system with a reform catalyst located therein, the reform catalyst reforming natural gas into a gas with a wider AFR operating range. The engine may thus operate at an AFR that may be outside of that available during natural gas combustion alone to allow for cooler engine operation.
    Type: Application
    Filed: May 7, 2013
    Publication date: November 13, 2014
    Applicant: Ford Global Technologies, LLC
    Inventors: David Karl Bidner, Mark Allen Dearth
  • Publication number: 20140331667
    Abstract: A method and system is provided for a turbocharged multi-cylinder internal combustion engine comprising a two-channel turbine and at least two groups of cylinders, wherein one group of cylinders is switchable responsive to an engine load over a threshold. Exhaust lines of each group of cylinders are arranged in a targeted manner to couple with the turbine such that the switchable group is attached to one channel and the active group is attached to the other channel to reduce the difference in distances that pressure pulses travel, wherein a shut-off element is provided in the channel attached to the switchable group and may be moved to block exhaust flow through the channel when the cylinders are deactivated, thus improving the partial deactivation and turbocharging characteristics of the engine.
    Type: Application
    Filed: April 29, 2014
    Publication date: November 13, 2014
    Applicant: Ford Global Technologies, LLC
    Inventors: Helmut Matthias Kindl, Werner Willems, Vanco Smiljanovski, Norbert Andreas Schorn, Franz Arnd Sommerhoff, Andreas Kuske, Joerg Kemmerling, Franz Brinkmann, Rob Stalman
  • Publication number: 20140331669
    Abstract: A mixer, for use with an internal combustion engine, for mixing EGR gas from an EGR loop with fresh air from the engine's fresh air intake. The mixer has an outer shell having the general shape of a thin-shelled hollow cylinder with a side entry port. One end of the cylinder provides a straight entry port and the other end of the cylinder provides a straight exit port. An inner sleeve fits inside the outer shell such that a space is provided between the inner sleeve and the outer shell, and a passageway is formed inside the inner sleeve through the length of the mixer. The inner sleeve has a series of flow ribs extending from its outer surface within the space, and has entry holes for providing fluid communication from the space into the passageway.
    Type: Application
    Filed: May 13, 2013
    Publication date: November 13, 2014
    Applicant: Southwest Research Institute
    Inventors: Guy M. Jones, Anthony J. Megel
  • Publication number: 20140325984
    Abstract: Various methods and systems are provided for flowing fluid through a passageway block. In one embodiment, a passageway block comprises a first passage and a second passage, each of the first passage and the second passage including inlets and outlets to the passageway block, none of the inlets and outlets being concentric with one another; but within the passageway block, for at least a portion, a third passage concentrically surrounds the second passage.
    Type: Application
    Filed: May 3, 2013
    Publication date: November 6, 2014
    Applicant: General Electric Company
    Inventors: Neil Xavier BLYTHE, Harsha VARDHANA
  • Patent number: 8869528
    Abstract: A method for determining intake air leakage in a low pressure EGR system may include a first step of measuring an intake air leaking amount Leak_Air, a second step of determining whether intake air may be leaked by comparing the intake air leaking amount Leak_Air and an intake air leakage determination value Leak_Air_Det with each other, and a third step of notifying leakage information against an intake air leakage when the intake air leakage may be settled.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: October 28, 2014
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Junkyun Ryu, Kihyun Baek
  • Publication number: 20140316675
    Abstract: A method to avoid over-dilution of an intake-air charge of an engine includes, during a first condition, applying at least some feedback control to the opening and closure of a valve that adjustably admits exhaust to the intake-air charge. During a second condition predictive of compressor surge, no feedback control is applied to the opening or the closure of the valve. Rather, feedforward control is applied to the closure of the valve so that stability in the engine is maintained even during surge conditions.
    Type: Application
    Filed: April 18, 2013
    Publication date: October 23, 2014
    Applicant: Ford Global Technologies, LLC
    Inventors: Julia Helen Buckland, Matthew John Gerhart, Suzanne Kay Wait, Timothy Joseph Clark, Gopichandra Surnilla, James Alfred Hilditch, Todd Anthony Rumpsa
  • Publication number: 20140298805
    Abstract: The present invention relates to a control unit of an internal combustion engine capable of performing a coordinate control of an exhaust gas recirculation (hereinafter abbreviated as “EGR”) gas supply amount by an EGR apparatus and a supercharging amount by a supercharger provided with a variable flow mechanism. The control unit comprises: a state quantity estimation section for calculating an in-cylinder oxygen excess ratio based on an operating state of the internal combustion engine; and a switching part for switching the respective opening degree commands for the EGR valve and the variable flow mechanism of the supercharger so that the opening degree of the EGR valve and the opening degree of the variable flow mechanism become smaller than in a normal state when the internal combustion engine is determined to be in the transient state based on the calculated in-cylinder oxygen excess ratio.
    Type: Application
    Filed: September 27, 2012
    Publication date: October 9, 2014
    Inventor: Ko Takayanagi
  • Publication number: 20140298804
    Abstract: In an internal combustion engine for a motor vehicle, having a first cylinder bank and a second cylinder bank and an exhaust tract including a first exhaust manifold and a second exhaust manifold with a first exhaust gas duct and a second exhaust gas duct and a first exhaust gas turbocharger including a first turbine situated in the exhaust tract and a second exhaust gas turbocharger including a second turbine arranged in the exhaust tract, the first turbine and the second turbine are selectively drivable in alternation by at least a portion of the exhaust gas via a valve device that is switchable between at least three positions and is situated upstream from the first turbine and the second turbine so that, in a first position of the valve device, the engine is operated in a pulse supercharging mode; in a second position of the valve device, the engine is operated in a ram charging mode and in a third position of the valve device, the engine is operated in a sequential supercharging mode.
    Type: Application
    Filed: February 7, 2014
    Publication date: October 9, 2014
    Applicant: DAIMLER AG
    Inventors: Nils BRINKERT, Thomas KUHN
  • Publication number: 20140298803
    Abstract: A lubrication system for an engine is disclosed. The lubrication system may have an oil pump configured to lubricate the engine. The lubrication system may also have a valve configured to direct oil from the oil pump to a fuel pump associated with the engine. The lubrication system may further have a controller. The controller may be configured to determine an operating speed of the engine. The controller may also be configured to adjust the valve to selectively direct the oil to the fuel pump based on the operating speed.
    Type: Application
    Filed: April 4, 2013
    Publication date: October 9, 2014
    Applicant: Electro-Motive Diesel, Inc
    Inventors: Chih L. LIU, Thomas G. GALLAGHER
  • Patent number: 8844285
    Abstract: A two-stage supercharging exhaust turbocharger includes: a high-pressure-stage supercharger having a high-pressure turbine driven by exhaust gas discharged from an exhaust manifold of an engine; a low-pressure-stage supercharger having a low-pressure turbine driven by the exhaust gas used to drive the high-pressure-stage supercharger, the high-pressure-stage supercharger and the low-pressure-stage supercharger being arranged in series in an exhaust gas passageway; and an exhaust gas control valve configured to selectively change flow rates of the exhaust gas passageways of the high-pressure-stage supercharger and the low-pressure-stage supercharger, wherein an exhaust manifold incorporating casing is configured by integrally forming the exhaust manifold, a high-pressure turbine housing of the high-pressure-stage supercharger, and a valve casing accommodating the exhaust gas control valve.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: September 30, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Byeongil An
  • Patent number: 8844282
    Abstract: An exhaust-gas turbocharger has a turbine housing and a waste-gate valve of a ball-cock configuration which is arranged therein. The actuating crank of the waste-gate valve has a crank arm, to which the closing element is fastened, and a crank spindle which is connected integrally to the crank arm and is mounted in the turbine-housing wall. A stop shoulder for sealing the crank-spindle bearing and a flexural-stress relief pocket are provided in the transition region between the crank spindle and the crank arm, as a result of which the sealing action of the crank-spindle bearing and a more uniform distribution of flexural stresses in the transition region between the crank arm and the crank spindle are brought about and therefore an increased service life of the actuating crank is ensured with a simultaneously economical configuration.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: September 30, 2014
    Assignee: Continental Automotive GmbH
    Inventors: Alexander Jaegle, Roland Herfurth
  • Patent number: 8844286
    Abstract: An air cleaner includes a case in which an inner cylindrical filter and an outer cylindrical filter are housed, the case having a case body that defines an opening end surface closed by a cover member. The case includes an air inlet provided to an outer circumference of the case body for supplying outside air and an exhaust outlet provided to a bottom of the case body at a downstream side in an air-flowing direction for discharging the air supplied through the air inlet and filtered through the inner cylindrical filter and the outer cylindrical filter. A mass flow rate sensor is provided in the exhaust outlet to measure the flow rate of the air. A flow straightening grid is provided at the upstream side of the mass flow rate sensor to straighten the flow of the air.
    Type: Grant
    Filed: July 21, 2009
    Date of Patent: September 30, 2014
    Assignee: Komatsu Ltd.
    Inventors: Kanji Namimatsu, Tomohiro Shimazu, Tadashi Iijima
  • 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: 8844284
    Abstract: The invention relates to an internal combustion engine system (1), particularly in a motor vehicle, comprising an internal combustion engine (2), a fresh gas system (3) for supplying fresh gas to the internal combustion engine (2), an exhaust gas system (4) for discharging exhaust gas from the internal combustion engine (2), and an exhaust gas recirculation system (5) for removing exhaust gas from the exhaust gas system (4) at a removal point (11) and introducing the removed exhaust gas into the fresh gas system (3) at an introduction point (12). In order to improve exhaust gas recirculation, the exhaust gas system (4) is equipped with an exhaust gas valve (14) downstream of the removal point (11) in order to control the penetrable cross-section of the exhaust gas system (4).
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: September 30, 2014
    Assignee: Mahle International GmbH
    Inventors: Alfred Elsässer, Patric Genieser, Achim Gommel, Mike Lau, Boris Lerch, Adam Loch, Kristijan Mudroh
  • Publication number: 20140283514
    Abstract: An object of the invention is to satisfy various constraints associated with supercharging pressure control even during transitional operation in a turbocharged diesel engine of which a supercharging pressure is actively controllable through operation of an actuator. The control device calculates a steady target value that is a target value of the supercharging pressure during steady operation on the basis of an engine rotation speed and a fuel injection amount, and operates the actuator through feedback control such that an actual supercharging pressure calculated from a signal of a supercharging pressure sensor is brought close to the steady target value. However, when any condition of a plurality of different conditions, which can be satisfied during transitional operation, is satisfied, a transitional target value of the supercharging pressure, suitable for the satisfied condition is calculated in accordance with a calculation rule prepared for each condition.
    Type: Application
    Filed: November 4, 2011
    Publication date: September 25, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Taku Ibuki
  • Publication number: 20140260243
    Abstract: An exhaust system, comprising a LP-EGR system that couples an exhaust system to an intake system and an exhaust pipe within the exhaust system with a turn greater 90 degrees and less than 270 degrees between front and rear tires and upstream of a LP-EGR exhaust inlet; and a muffler positioned in the exhaust system downstream of the LP-EGR exhaust inlet and forward of the front tires. By shortening the LP-EGR path, back pressure to sustain EGR flow can be maintained without the use of a back pressure valve.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventor: Xiaogang Zhang
  • Patent number: 8833075
    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: October 31, 2013
    Date of Patent: September 16, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Joseph Norman Ulrey
  • Patent number: 8813490
    Abstract: An exhaust emission control device for an internal combustion engine is provided that can suppress the adherence of HC to an EGR path and the like accompanying enrichment of the exhaust air/fuel ratio.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: August 26, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventor: Katsuji Wada
  • Publication number: 20140230434
    Abstract: Various methods and systems are provided for cooling exhaust system components. In one example, a method comprises directing compressed air onto an exterior of an engine exhaust passage valve.
    Type: Application
    Filed: February 15, 2013
    Publication date: August 21, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Chirag Bipinchandra Parikh, Jayesh Jain, Eric David Peters
  • Publication number: 20140223903
    Abstract: An engine assembly includes an intake assembly, an internal combustion engine defining a plurality of cylinders and configured to combust a fuel and produce exhaust gas, and an exhaust assembly in fluid communication with a first subset of the plurality of cylinders. Each of the plurality of cylinders are provided in fluid communication with the intake assembly. The exhaust assembly is provided in fluid communication with a first subset of the plurality of cylinders, and a dedicated exhaust gas recirculation system in fluid communication with both a second subset of the plurality of cylinders and with the intake assembly. The dedicated exhaust gas recirculation system is configured to route all of the exhaust gas from the second subset of the plurality of cylinders to the intake assembly. Finally, the engine assembly includes a turbocharger having a variable geometry turbine in fluid communication with the exhaust assembly.
    Type: Application
    Filed: April 24, 2013
    Publication date: August 14, 2014
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Edward J. Keating
  • Publication number: 20140216030
    Abstract: An exhaust system for treating exhaust gas from an internal combustion engine is disclosed. The system comprises a three-way catalyst (TWC), a fuel reformer catalyst located downstream of the TWC, and a fuel supply means located upstream of the fuel reformer catalyst. The exhaust gas is split into two portions. The first portion of the exhaust gas bypasses the TWC and contacts the fuel reformer catalyst in the presence of fuel added from the fuel supply means, and is then recycled back to the engine intake. The second portion of the exhaust gas is contacted with the TWC and is then utilized to heat the fuel reformer catalyst before being expelled to atmosphere. The exhaust system allows for maximum heat exchange from the exhaust gas.
    Type: Application
    Filed: February 4, 2014
    Publication date: August 7, 2014
    Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventors: KIRSTY ELLEN COCKLE, PAUL JAMES MILLINGTON, EDWARD JAMES RICHARD MOSS, JOHN FREDERICK PIGNON
  • Patent number: 8793996
    Abstract: An internal combustion engine has a turbocharger system and an exhaust gas recirculation (EGR) path. The turbocharger system comprises an inlet, an outlet and at least one turbocharger. The exhaust gas recirculation path recirculates a flow of exhaust gas to the air intake path. An EGR turbocharger has a turbine with an inlet in fluid communication with a first location in the exhaust gas path and an outlet in fluid communication with a second location in the exhaust gas path. The first and second locations being disposed such that, in use, the pressure difference of the gas between the inlet and outlet of the EGR turbine is less than the pressure difference of the gas between the inlet and outlet of the turbocharger system. The expansion ratio across the EGR turbine is therefore less than that across the turbocharger system and the EGR turbocharger is able to operate with greater efficiency.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: August 5, 2014
    Assignee: Cummins Turbo Technologies Limited
    Inventor: Pierre Bernard French
  • Patent number: 8794219
    Abstract: An EGR control apparatus for an internal combustion engine, which is capable of properly controlling an inert gas amount 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, reduced exhaust emissions, and improve operability. The EGR control apparatus includes low-pressure and high-pressure EGR devices, and an ECU. The ECU controls the low-pressure and high-pressure EGR gas amounts according to engine speed and demanded torque, and when a combination of engine speed and demanded torque is in a predetermined region, the low-pressure and high-pressure EGR gas amounts are controlled such that inert gas in low-pressure EGR gas exceeds in amount inert gas in high-pressure EGR gas, and the former more exceeds the latter as engine speed is higher or demanded torque is larger.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: August 5, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yuji Yasui, Eiji Hashimoto, Hisao Haga, Koichi Nakajima
  • Patent number: 8793997
    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: Grant
    Filed: February 7, 2012
    Date of Patent: August 5, 2014
    Assignee: Daimler, AG
    Inventors: Heiko Beil, Florian Wegenast
  • Publication number: 20140208743
    Abstract: In response to activation of a compression release brake when a motor vehicle having a turbocharged internal combustion engine is operating at some elevation above sea level and a turbocharger compressor is operating in a region of an operating map which is creating boost air in an engine intake manifold which would cause the compression release brake to decelerate the vehicle more slowly at that elevation than it would at sea level for the same operating conditions of the vehicle and engine other than altitude, the compression release brake decelerates the vehicle less slowly by causing an exhaust gas recirculation system to reduce at least one of a) mass of exhaust diverted to an intake system of the engine and b) cooling of the diverted exhaust.
    Type: Application
    Filed: August 25, 2011
    Publication date: July 31, 2014
    Applicant: International Engine Intellectual Property Company
    Inventors: Luis Carlos Cattani, John Zagone, Bashar Y. Melhem, Paul Gottemoller, Michael D. Bartkowicz
  • Publication number: 20140208744
    Abstract: A mixing device of an EGR apparatus has a double pipe structure being composed of a first cylindrical member and a second cylindrical member, wherein the first and second cylindrical members are coaxially arranged with each other. Cyclone blades are provided between the first and second cylindrical members, so that EGR gas introduced from an inlet portion into an inside of the first cylindrical member flows along an cylindrical inner wall of the first cylindrical member. A swirl flow is generated in the EGR gas passing through the cyclone blades, so that the EGR gas spirally flows in a downstream side to remove foreign material, such as flocculated water from the EGR gas.
    Type: Application
    Filed: April 3, 2014
    Publication date: July 31, 2014
    Applicant: DENSO CORPORATION
    Inventor: Kiyoshi OOSHIMA
  • Patent number: 8789370
    Abstract: A device for utilizing the waste heat of an internal combustion includes a single-stage or multi-stage supercharging device, which is designed as an exhaust-gas turbocharger in particular. The single-stage or multi-stage supercharging device is assigned an additional supercharging device including an expansion machine acted upon by an auxiliary circuit, in particular a steam circuit.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: July 29, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Juergen Stegmaier, Martin Cichon, Manfred Schmitt, Bernd Banzhaf, Achim Schmidt
  • Publication number: 20140202150
    Abstract: The reciprocating piston of an exhaust pressure wave charger for a combustion engine has an integrated hydraulic piston and an air piston transferring exhaust gas energy into mechanical power and provides exhaust gas for the combustion chamber. The fluid communication between hydraulic piston and hydraulic circuit is controlled by valves to extract the exhaust energy during the expansion stroke and advance the charger piston back into top end position. The hydraulic piston has two faces for adapting the hydraulic piston force more closely to the exhaust gas forces. Exhaust gas recirculation (EGR) is provided by an air piston and valves controlling the flow of exhaust gas into the combustion chamber.
    Type: Application
    Filed: January 24, 2013
    Publication date: July 24, 2014
    Inventor: Ingo Valentin
  • Patent number: 8783028
    Abstract: An engine system includes an exhaust gas recirculation conduit having an inlet in fluid communication with an exhaust conduit and an outlet in fluid communication with an intake air conduit. An exhaust gas recirculation performance balancing restrictor has an uninstalled position wherein the exhaust conduit defines a first backpressure at the inlet of the exhaust gas recirculation conduit. The exhaust gas recirculation performance balancing restrictor also has an installed position in which the exhaust gas recirculation performance balancing restrictor is removably disposed within the exhaust conduit downstream from the inlet of the exhaust gas recirculation conduit. In the installed position, the exhaust gas recirculation performance balancing restrictor provides a fixed flow restriction through the exhaust conduit to generate a second backpressure at the inlet of the exhaust gas recirculation conduit that is greater than the first backpressure.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: July 22, 2014
    Assignee: Caterpillar Inc.
    Inventors: Eric J. Charles, Matthew F. Fahrenkrug, David E. Gorisek
  • Patent number: 8783031
    Abstract: Systems and methods for supplying air to an engine are disclosed. In one example, an air inlet throttle is at least partially closed in response to a change in engine torque request. In another example, the air inlet throttle is adjusted in conjunction with adjusting an engine throttle. The approach can reduce compressor noise and may reduce the possibility of compressor surge.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: July 22, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Joseph Norman Ulrey, Jeffrey Allen Doering, Ross Dykstra Pursifull, Donald J. Lewis
  • Patent number: 8783030
    Abstract: A system and method are provided for controlling an air handling system for an internal combustion engine including a turbocharger having a variable geometry turbine and a compressor having a fresh air inlet fluidly coupled to ambient and to an air outlet of an electric air pump. An air pump enable value as determined a function of target engine speed and total fuel target values and an air flow target is determined as a function of a target fresh air flow value. Operation of the electric air pump is activated to supply supplemental air flow to the fresh air inlet of the compressor if the air pump enable value is greater than a threshold air pump enable value and the air flow target does not exceed a maximum flow value.
    Type: Grant
    Filed: September 25, 2011
    Date of Patent: July 22, 2014
    Assignee: Cummins Inc.
    Inventors: John N Chi, John M Mulloy, Sriram S Popuri, Timothy R Frazier, Martin T Books, Divakar Rajamohan, Indranil Brahma
  • Patent number: 8783029
    Abstract: A supercharged internal combustion engine is provided. The engine comprises a cylinder, an intake line in an intake system, for supplying charge air to the cylinder, an exhaust line for discharging exhaust gases, an exhaust-gas turbocharger including a turbine arranged in the exhaust line and a compressor arranged in the intake line, an exhaust-gas recirculation arrangement including a recirculation line which branches off from the exhaust line downstream of the turbine and opens into the intake line upstream of the compressor, and a sensor for detecting the concentration Ci,intake of a component i of the charge air in the intake system provided downstream of the opening of the recirculation line into the intake line. In this way, the exhaust-gas recirculation may be regulated based on feedback from the sensor to control emissions.
    Type: Grant
    Filed: January 9, 2012
    Date of Patent: July 22, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Christian Winge Vigild, Andreas Kuske, Daniel Roettger, Juergen Karl Stief
  • Publication number: 20140196454
    Abstract: Methods and systems are provided for controlling and coordinating control of a post-catalyst exhaust throttle and an EGR valve to expedite catalyst heating. By closing both valves during an engine cold start, an elevated exhaust backpressure and increased heat rejection at an EGR cooler can be synergistically used to warm each of an engine and an exhaust catalyst. The valves may also be controlled to vary an amount of exhaust flowing through an exhaust venturi so as to meet engine vacuum needs while providing a desired amount of engine EGR.
    Type: Application
    Filed: January 16, 2013
    Publication date: July 17, 2014
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Joseph Norman Ulrey, William Charles Ruona, Thomas G. Leone, Gopichandra Surnilla