With Exhaust Gas Recirculation Patents (Class 60/605.2)
  • Patent number: 8776517
    Abstract: The disclosure provides a system including a Rankine power cycle cooling subsystem providing emissions-critical charge cooling of an input charge flow. The system includes a boiler fluidly coupled to the input charge flow, an energy conversion device fluidly coupled to the boiler, a condenser fluidly coupled to the energy conversion device, a pump fluidly coupled to the condenser and the boiler, an adjuster that adjusts at least one parameter of the Rankine power cycle subsystem to change a temperature of the input charge exiting the boiler, and a sensor adapted to sense a temperature characteristic of the vaporized input charge. The system includes a controller that can determine a target temperature of the input charge sufficient to meet or exceed predetermined target emissions and cause the adjuster to adjust at least one parameter of the Rankine power cycle to achieve the predetermined target emissions.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: July 15, 2014
    Assignee: Cummins Intellectual Properties, Inc.
    Inventors: Timothy C. Ernst, Christopher R. Nelson
  • Publication number: 20140190163
    Abstract: The present invention is relative to a control method of a turbo-compound engine apparatus wherein said apparatus comprises a low pressure compressor connected to the high pressure turbine and a low pressure turbine connected to a high pressure compressor by means of a coupling unit. The apparatus also comprises first bypassing means of said high pressure compressor. The method according to the invention comprises the step of deactivating said first bypassing means when at least a specific condition occurs.
    Type: Application
    Filed: May 30, 2012
    Publication date: July 10, 2014
    Applicant: FPT Motorenforschung AG
    Inventor: Christian Maier
  • Patent number: 8769950
    Abstract: A turbocharger including a turbine wheel having a hub-to-tip ratio of no more than 60% and blades with a high turning angle, a turbine housing forming an inwardly spiraling primary-scroll passageway that significantly converges to produce highly accelerated airflow into the turbine at high circumferential angles, and a two-sided parallel compressor. The compressor and turbine each produce substantially no axial force, allowing the use of minimal axial thrust bearings.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: July 8, 2014
    Assignee: Honeywell International Inc.
    Inventors: Jeffrey A. Lotterman, Vaclav Kares
  • Patent number: 8769927
    Abstract: A method and system for controlling recirculated exhaust gas composition and quantity provided to an internal combustion engine, which has one or more separately controllable combustion cylinders, a main exhaust line and an exhaust gas recirculation (EGR) loop. A first exhaust valve is connected to the main exhaust line, and a second exhaust valve is connected to the EGR loop. The operation of the exhaust valves is controlled such that exhaust does not flow through both exhaust valves at the same time. Control of the exhaust valves is coordinated with the main fueling event used to control the exhaust composition exiting each valve for every cylinder on every cycle. During each engine cycle, a post-combustion fuel injection event is also used to add fuel to the exhaust in-cylinder, which flows only through the second (EGR) exhaust valve.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: July 8, 2014
    Assignee: Southwest Research Institute
    Inventors: Terrence F. Alger, II, Jess W. Gingrich
  • Patent number: 8763394
    Abstract: A method includes detecting a presence of a fouling layer in an exhaust gas recirculation cooler of an internal combustion engine. The flow of a coolant through the exhaust gas recirculation cooler is stopped for a predetermined period of time while the engine exhaust gas flows through the exhaust gas recirculation cooler. The flow of an engine exhaust gas exiting from the exhaust gas recirculation cooler is diverted to at least one of a turbine of a turbocharger, and an exhaust pipe of the internal combustion engine. The fouling layer from the exhaust gas recirculation cooler is expelled along with the engine exhaust gas exiting the exhaust gas recirculation cooler.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: July 1, 2014
    Assignee: General Electric Company
    Inventor: Sebastian Walter Freund
  • Publication number: 20140174078
    Abstract: A fluid valve is disclosed for use in an exhaust system of an engine. The fluid valve may have a body and an inlet formed within the body. The inlet may have a curved first end surface with a raised convex first opening. Opposite the inlet, the fluid valve may also have an outlet formed within the body. The outlet may have a second end surface with a second opening. The fluid valve may also have a restriction formed between the first end surface and the second end surface, which connects the first and second openings.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 26, 2014
    Applicant: CATERPILLAR INC.
    Inventors: Deep Bandyopadhyay, Michael Goetzke
  • Publication number: 20140165557
    Abstract: One embodiment is a method including determining whether an ammonia storage device has a stored quantity of ammonia, predicting an impending ammonia release from the ammonia storage device, determining a NOx increase amount in response to the impending ammonia release, and increasing an amount of NOx provided by an engine based on the NOx increase amount. In certain embodiments, determining the NOx increase amount in response to the impending ammonia release comprises determining a NOx increase schedule based on the stored quantity of ammonia. In certain embodiments, the NOx increase schedule comprises a specified NOx increase time period, and in certain further embodiments, the method further includes decrementing the specified NOx increase time period based on an estimated catalyst degradation value.
    Type: Application
    Filed: February 19, 2014
    Publication date: June 19, 2014
    Applicant: Cummins Inc.
    Inventors: Hasan Mohammed, Joseph M. Brault
  • Publication number: 20140165560
    Abstract: An internal combustion engine system includes an internal combustion engine generating an exhaust gas stream and an air intake system coupled to the internal combustion engine. The engine system also includes a turbocharger that includes a turbine in exhaust gas receiving communication with the exhaust gas stream and a compressor in air receiving communication with the air intake line. Further, the engine system includes an exhaust system in exhaust gas receiving communication with the internal combustion engine. The exhaust system has a main exhaust line and a low pressure (LP) exhaust gas recirculation (EGR) line through which at least a portion of the exhaust gas in the main exhaust line downstream of the turbine is flowable into the air intake system. The exhaust system further includes an ammonia oxidation catalyst positioned within the LP EGR line.
    Type: Application
    Filed: December 18, 2012
    Publication date: June 19, 2014
    Applicant: CUMMINS IP, INC.
    Inventors: Cary A. Henry, Michael J. Ruth
  • Patent number: 8752532
    Abstract: This invention relates to an internal combustion engine and a control device for the internal combustion engine and has an object to provide an internal combustion engine and a control device therefore that can suppress occurrence of knocking if an EGR rate is increased. An EGR gas can be made to flow separately through one path via one EGR passage and an other path via another EGR passage. The EGR gas flow through the other path can be cooled by an intercooler. Since the intercooler usually has a capacity larger than that of an EGR cooler, its cooling capability is high, and the EGR gas can be made to flow into a surge tank in a state where heat of the EGR gas has been sufficiently emitted.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: June 17, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shingo Korenaga, Shigeki Miyashita, Hiroki Ito, Yusuke Saitou, Kouhei Kiyota
  • Patent number: 8739527
    Abstract: A method for improving operation of a turbocharged engine is presented. In one embodiment, the method may reduce engine emissions and improve engine efficiency during an engine start.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: June 3, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Joseph Norman Ulrey, Ross Dykstra Pursifull
  • Patent number: 8733328
    Abstract: In a method for controlling operation of an engine in which an EGR system is incorporated therein, when the engine is in a pressure-accumulable operational state in which EGR gas can be pressure-accumulated in an EGR passage between an EGR control valve and an on-off valve, these valves are brought into a full closed state, respectively. In addition, when an intake pressure transmitted from an air intake passage to the engine becomes more than or equal to a target value of the intake pressure set based on an operational state of the engine, the on-off valve is switched to a full open state, and then the on-off valve is switched to the full closed state again after elapse of a predetermined time, and high-pressure EGR gas of a low oxygen concentration is temporarily stored in the EGR passage.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: May 27, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Naruto Yamane
  • Patent number: 8733102
    Abstract: A method for operation of a high pressure exhaust-gas recirculation (EGR) system is provided. The method includes transferring heat from an exhaust flow through an EGR cooler to an engine coolant, the EGR cooler coupled to an EGR line fluidly coupled in parallel with a turbine and directing a controlled portion of the exhaust flow from the EGR cooler to an engine intake. The method further includes directing another controlled portion of the exhaust flow from the EGR cooler to the surrounding atmosphere.
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: May 27, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Hans Guenter Quix, Christian Winge Vigild
  • Patent number: 8726656
    Abstract: A power assembly includes an internal combustion engine including an air intake line and an exhaust gas line having at least one heat exchanger. The power assembly further includes a Brayton cycle system capable of providing additional power to the main internal combustion engine and that includes a gas compressor, a fuel burning heater and a turbine linked to the compressor so that air is drawn into the compressor where it is pressurized, the pressurized air is further heated by flowing through at least one heat exchanger where it exchanges heat with exhaust gases from the main internal combustion engine, the heated and pressurized air is further heated by the fuel burning heater and is thereafter expanded through the turbine where a first fraction of the work extracted by the turbine is used to drive the compressor and a second fraction of the work extracted by the turbine is used to bring additional energy.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: May 20, 2014
    Assignee: Renault Trucks
    Inventor: Marc Lejeune
  • Patent number: 8726660
    Abstract: A supercharger compressor includes a plurality of rotors rotatably mounted in a housing, a first inlet for air, a second inlet for recirculated exhaust gas, and a flow separator. The flow separator is arranged interior the housing and configured to form a slideable seal with at least one rotor of the plurality of rotors, the slideable seal fluidically isolating the first inlet from the second inlet, at least in part, and retarding pressure equalization therebetween.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: May 20, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Brad Alan Boyer, Eric Warren Curtis
  • Patent number: 8726657
    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 the charge air and rotationally drive a pump in response thereto. The pump is configured to receive an EGR from the exhaust and introduce the pumped EGR to the charge air. The power plant also includes an exhaust gas recirculation passage. The second turbo machine includes a turbine rotationally coupled to the pump. The turbine has an expanded air passage, and the pump is arranged in the exhaust gas recirculation passage. A pre-cooler is arranged in the expanded air passage and in the exhaust gas recirculation passage upstream from the pump.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: May 20, 2014
    Assignee: AVL Powertrain Engineering, Inc.
    Inventor: Gary Hunter
  • Patent number: 8726658
    Abstract: Methods and systems are provided for an engine including a first turbocharger having a first compressor and a second turbocharger having a second compressor. An EGR differential between the first compressor and the second compressor may be increased under a condensation condition, and decreased under a surge condition. The EGR differential may also be decreased when a compressor outlet temperature exceeds an outlet temperature threshold.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: May 20, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Daniel Joseph Styles, Brad Alan Boyer, Satheesh Makkapati
  • Publication number: 20140130494
    Abstract: In a air compressing device of an engine, a supercharger interposed in an EGR pipe diverging from a portion of an exhaust pipe of the engine on the downstream side of a turbine of a turbocharger, pressurizing an EGR gas introduced into an EGR pipe by a compressor driven by rotation of the engine and supplying the pressurized EGR gas to an intake manifold of the engine, and control structure for adjusting an opening of a throttle valve arranged in a portion of the EGR pipe on the downstream side of the compressor of the supercharger and controlling a supply amount of the EGR gas supplied from the compressor to the intake manifold.
    Type: Application
    Filed: October 30, 2013
    Publication date: May 15, 2014
    Inventors: Hiroyuki HASEGAWA, Kinpei ASAZUMA
  • Publication number: 20140130493
    Abstract: A turbocharged motor vehicle engine system includes an engine having an intake manifold, an exhaust manifold, and a crankcase ventilation outlet. A turbocharger includes a turbine having an inlet fluidly connected to the exhaust manifold through an exhaust conduit and a turbo compressor having an outlet fluidly connected to the intake manifold through an inlet conduit. The turbo compressor also includes an inlet. A crankcase gas conditioning member includes an inlet section fluidly connected to the crankcase ventilation outlet and an outlet section fluidly connected to the turbo compressor inlet. An idle bypass conduit includes an inlet portion fluidly connected to the outlet section of the crankcase gas conditioning member and an outlet portion fluidly connected to the inlet conduit. The idle bypass conduit is configured and disposed to selectively bypass the turbo charger while the engine is operating at an idle.
    Type: Application
    Filed: November 15, 2012
    Publication date: May 15, 2014
    Applicant: GM Global Technology Operations LLC
    Inventors: Thomas A. Spix, Neil G. Klueber
  • Publication number: 20140130495
    Abstract: The invention relates to a method for operating an internal combustion engine, a turbine of an exhaust gas turbocharger situated in an exhaust system of the internal combustion engine being driven by exhaust gas from the internal combustion engine, and a compressor of the exhaust gas turbocharger powered by the turbine and situated in a combustion air system of the internal combustion engine compressing combustion air, exhaust gas being diverted in a high pressure exhaust gas recirculation loop upstream from the turbine and mixed with the combustion air downstream from the compressor, exhaust gas being diverted in a low pressure exhaust gas recirculation loop downstream from the turbine and mixed with the combustion air upstream from the compressor, exhaust gas being purified by a low pressure exhaust gas recirculation filter in the LP-EGR loop, a predetermined value for a total exhaust gas recirculation flow.
    Type: Application
    Filed: November 11, 2013
    Publication date: May 15, 2014
    Applicant: Volkswagen Aktiengesellschaft
    Inventors: Ekkehard POTT, Bernd Hahne
  • Patent number: 8720202
    Abstract: An internal combustion engine having an exhaust gas recirculation device for recirculating exhaust gas of the internal combustion engine to a fresh-air side of the internal combustion engine. For this purpose, it is provided that the exhaust gas recirculation device has at least one compressor for compressing the exhaust gas supplied to the fresh-air side of the internal combustion engine.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: May 13, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Juergen Stegmaier, Martin Cichon, Manfred Schmitt, Bernd Banzhaf, Achim Schmidt
  • Patent number: 8713937
    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: June 27, 2013
    Date of Patent: May 6, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Joseph Norman Ulrey
  • Patent number: 8713936
    Abstract: One embodiment includes a housing (12) and a valve (10) to be used in an internal combustion engine exhaust breathing system (14). The housing (12) may define one or more inlet passages that receive fluid-flow, and may also define one or more outlet passages that deliver fluid-flow. The valve (10) regulates fluid-flow through the housing (12) and between the passages.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: May 6, 2014
    Assignee: BorgWarner Inc.
    Inventor: Volker Joergl
  • Publication number: 20140116374
    Abstract: Disclosed is a turbocharged internal combustion piston engine system that includes a waste-heat recovery system. The waste-heat recovery system involves injecting heated water into the cylinders during combustion to increase engine power and efficiency and to reduce emissions. The engine can be a spark or compression ignition type of engine, and can utilize fuels including but not limited to diesel, natural gas, gasoline, and ethanol. The engine also includes a turbocharger that utilizes a turbine in the exhaust gas flow to provide power to a compressor in the intake air flow to pressurize the intake air and provide additional charge flow to the engine to increase engine output.
    Type: Application
    Filed: October 31, 2013
    Publication date: May 1, 2014
    Inventor: Jared William Brown
  • Publication number: 20140109571
    Abstract: A method includes combusting air within a plurality of cylinders of an internal combustion engine by injecting a fuel into the plurality of cylinders. The method further includes expanding a first portion of an exhaust gas generated from the plurality of combustion cylinders via a turbine. The method further includes controlling at least one of feeding a second portion of the exhaust gas via an exhaust channel bypassing the turbine; and recirculating a third portion of the exhaust gas to the plurality of combustion cylinders via a recirculation channel, as a function of an intake manifold air temperature and pressure at which the engine is operated.
    Type: Application
    Filed: October 19, 2012
    Publication date: April 24, 2014
    Applicant: General Electric Company
    Inventors: Roy James Primus, Omowoleola Chukwuemeka Akinyemi, Thomas Michael Lavertu, James Robert Mischler, Venu Gopal Gummadavelli
  • Publication number: 20140109572
    Abstract: An exhaust manifold for an internal combustion engine with exhaust turbocharging and an exhaust gas recirculation device, includes a header pipe with several inflow openings connected with the combustion chambers of the internal combustion engine via connecting pieces, and outlet openings branching from the header pipe via connecting branches for the exhaust gas recirculation and the exhaust turbocharger. To achieve a high exhaust gas recirculation. rate and an effective pressurization of the exhaust turbocharger with exhaust gas, at least one flow guide element is arranged in the header pipe close to the outlet openings which divides the exhaust gas flow onto the two outlet openings in a targeted manner.
    Type: Application
    Filed: October 17, 2013
    Publication date: April 24, 2014
    Applicant: MAN Truck & Bus AG
    Inventor: Manfred GREINER
  • Publication number: 20140109884
    Abstract: Engine coolant heating systems and methods that improve waste heat recovery. The systems and methods include a piped connection between the outlet of an exhaust gas recirculation cooler and the main exhaust pipe leading to the vehicle's tailpipe. The systems and methods also include at least one additional valve in the exhaust stream for directing the flow of exhaust appropriately given specific driving conditions.
    Type: Application
    Filed: October 23, 2012
    Publication date: April 24, 2014
    Inventors: Daniel E Hornback, Kevin J Laboe, Gregg T Black
  • Patent number: 8701637
    Abstract: An internal combustion engine system includes a fresh air system, an exhaust gas system and an exhaust gas recirculation system. The exhaust gas recirculation system has an exhaust gas valve assembly for controlling a removal flow at a recirculation line removal point and a fresh air valve assembly for controlling an introduction flow at a fresh air line introduction point. The exhaust gas valve assembly is permanently displaceable between a first position and a second position for generating the removal flow. The fresh air valve assembly is permanently displaceable between a first position and a second position for generating the introduction flow. The valve assemblies are synchronized such that the positive pressure pulses entering at the removal point into the recirculation line meet the negative pressure pulses at the introduction point.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: April 22, 2014
    Assignee: Mahle International GmbH
    Inventor: Alfred Elsässer
  • 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: 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
  • 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
  • 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