Plural Superchargers Patents (Class 60/612)
  • Publication number: 20110289919
    Abstract: The subject is to efficiently detect the sticking of changeover valves for realizing a plurality of supercharging modes in a vehicle provided with a plurality of superchargers, and also to realize preferable fail-safe in cases where the sticking is detected. In a vehicle, which is provided with: a primary turbo and a secondary turbo, each of which is of an exhaust driven type; an exhaust changeover valve and an intake changeover valve, which are placed in a secondary exhaust passage and a secondary intake passage corresponding to the secondary turbo, respectively; and an intake bypass valve placed in an intake bypass passage, an ECU sets the opening/closing state of each changeover valve to an opening/closing state corresponding to a twin turbo mode at the time of engine stop, and it uses the drive control of each changeover valve which is necessitated in the transition to a single turbo mode at the engine start, thereby performing the sticking detection of the changeover valve at the same time.
    Type: Application
    Filed: January 26, 2009
    Publication date: December 1, 2011
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi Oyagi, Yoshio Yamashita, Kazuki Iwatani, Taro Aoyama
  • Patent number: 8065878
    Abstract: An internal combustion engine having a reciprocating multi cylinder internal combustion engine with multiple valves. At least a pair of exhaust valves are provided and each supply a separate power extraction device. The first exhaust valves connect to a power turbine used to provide additional power to the engine either mechanically or electrically. The flow path from these exhaust valves is smaller in area and volume than a second flow path which is used to deliver products of combustion to a turbocharger turbine. The timing of the exhaust valve events is controlled to produce a higher grade of energy to the power turbine and enhance the ability to extract power from the combustion process.
    Type: Grant
    Filed: March 10, 2008
    Date of Patent: November 29, 2011
    Assignee: Deere & Company
    Inventor: Carl T. Vuk
  • Patent number: 8061137
    Abstract: A method is provided for operating a turbocharger. The method includes sensing a parameter indicative of a speed of a turbocharger and a parameter indicative of an engine speed. The method also includes determining a first desired engine speed based on the speed of the turbocharger, the engine speed, and a maximum desired speed of the turbocharger. The method further includes regulating a flow of fuel to an engine based on the first desired engine speed.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: November 22, 2011
    Assignee: Caterpillar Inc.
    Inventor: Raymond Geraint Evans
  • Patent number: 8051661
    Abstract: The purpose of the present invention is providing a supercharging system which uses both of a mechanism such as VN or the like and an electric motor generating an assist force while making the supercharger operate smoothly when the assist by the electric motor is stopped. The system controls the electric motor in a feedback manner so that enough assist force is generated (FIG. 2A and FIG. 2B) while controlling the VN in an open manner (FIG. 2D) until status of the supercharger reaches target status (time t1) when an accelerator requirement arises in a low revolution region. The control of the electric motor is changed to an open control, and the control of the VN is changed to a feedback control, respectively, at time t1. The open control of the electric motor is continued so that necessary complement torque occurs until time t2. After time t2, the system maintains the target status only by the feedback control of the VN.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: November 8, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Osamu Igarashi, Masakazu Tabata
  • Patent number: 8033108
    Abstract: A sequential-type, two-stage supercharging system (1) having a high-pressure-stage turbocharger (6) and a low-pressure-stage turbocharger (5), in which high-pressure-stage exhaust gas bypass passages (6d, 6e) for bypassing a high-pressure-stage turbine (6t) is formed by both the first bypass passage (6d) having a small-diameter valve (6f) and the second bypass passage (6e) having a large-diameter valve (6g) with a diameter greater than that of the small-diameter valve (6f). The effective valve area of the small-diameter valve (6f) is set to 9.5%-26.5% of the passage cross-sectional area required when exhaust gas is at its maximum total flow rate. This allows, in medium speed/medium load operation, fine EGR rate control and air-fuel ratio control.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: October 11, 2011
    Assignee: Isuzu Motors Limited
    Inventors: Naoya Ishikawa, Junichiro Nitta
  • Patent number: 8028525
    Abstract: A multistage exhaust turbocharger is easily mountable in a narrow engine compartment of a vehicle by simplifying its construction and reducing its bulk. The multistage exhaust turbocharger has a high-pressure stage turbocharger and a low-pressure stage turbocharger. A cover of the high-pressure stage turbocharger has a compressor inlet passage, a bypass inlet passage, a switching aperture between the passages to be opened and closed by a valve body of the compressor bypass valve device, and a bypass outlet pipe part connecting to the bypass inlet passage to introduce bypass air passed through the aperture opened by the bypass valve to the compressor bypass channel which is to be connected to the bypass outlet pipe part.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: October 4, 2011
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Byeongil An, Takashi Shiraishi, Toru Kikuchi, Mamoru Wakita
  • Publication number: 20110232279
    Abstract: An internal combustion engine (100) includes an intake manifold (106) and at least one exhaust manifold (108). A first compressor (120) that is operably associated with a first turbine (128) has a first air inlet (126) and a first air outlet (118). The first air inlet (126) is adapted to admit air into the first compressor (120), and the first air outlet (118) is fluidly connected to the intake manifold (106). The first turbine (128) fluidly communicates with a tailpipe (138). A second compressor (124) is operably associated with a second turbine (160) and has a first tributary fluid inlet (152), a second tributary fluid inlet (154), and a second fluid outlet (122). The first tributary fluid inlet (152) is fluidly connected to the tailpipe (138) at a junction (147), the second tributary fluid inlet (154) is adapted to admit air into the second compressor (124), and the second fluid outlet (122) is fluidly connected to the intake manifold (106).
    Type: Application
    Filed: June 6, 2011
    Publication date: September 29, 2011
    Applicant: International Engine Intellectual Property Company, LLC
    Inventors: Martin R. Zielke, Qianfan Xin
  • Patent number: 8015812
    Abstract: Power generation systems and methods are provided with features directed to various innovations including ones relating to the conversion of concentrated solar and biomass energy to electricity, load-shifting of electrical power supply systems, gas turbine devices and cycles, and power plant control systems.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: September 13, 2011
    Assignee: Southwest Solar Technologies, Inc.
    Inventors: James B. Kesseli, Thomas L. Wolf
  • Patent number: 8011186
    Abstract: A turbocharger system comprises a first relatively small high-pressure (HP) turbocharger (1) and a second relatively large low pressure (LP) turbocharger (2). The turbine (6) of the LP turbocharger (2) is connected in series downstream of the turbine (4) of the HP turbocharger (1) in a first exhaust gas passage (11). An exhaust bypass flow passage (12) provides a bypass flow path around the HP turbine (4). A rotary valve (8) is located at a junction of the bypass flow passage (12) and a first exhaust gas flow passage (11). The rotary valve (8) comprises a valve rotor (19) which is rotatable to selectively permit or block flow to the LP turbine (6) from either the first exhaust gas passage (11) or the bypass gas passage (12). The rotary valve (8) is operated to at least partially restrict flow to the LP turbine to generate a braking back pressure.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: September 6, 2011
    Assignee: Cummins Turbo Technologies Limited
    Inventors: James A McEwan, Lee J Robinson
  • Patent number: 8001783
    Abstract: An apparatus, system, and method are disclosed for a single-actuated multi-function valve. The apparatus includes a primary fluid conduit, a secondary fluid conduit, and a valve. The primary fluid conduit flows from an exhaust manifold to an outlet through a high pressure turbocharger and a low pressure turbocharger. The secondary fluid conduit flows from the exhaust manifold to an outlet through the low pressure turbocharger. The valve has two flow passages—the first flow passage is a variable restriction within the primary fluid conduit, and the second flow passage is a variable restriction within the secondary fluid conduit. Turning the valve one direction from a nominal position controls the flow ratios in the primary and secondary fluid conduits, while turning the valve in the other direction from the nominal position controls exhaust braking.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: August 23, 2011
    Assignee: Cummins IP, Inc.
    Inventors: Adrian P. Dale, Vivek A. Sujan
  • Patent number: 8001782
    Abstract: An engine system for a vehicle is provided, comprising an internal combustion engine including an exhaust system; a first turbine including a first wastegate and arranged along a first branch of the exhaust system, a second turbine including a second wastegate and arranged along a second branch of the exhaust system; a first exhaust gas sensor arranged along the first branch of the exhaust system downstream of the first turbine and first wastegate; a second exhaust gas sensor arranged along the second branch of the exhaust system downstream of the second turbine and the second wastegate; and a control system configured to command the first and second wastegates to a closed or open position and to indicate one of said wastegates as unresponsive to said command in response to a temperature difference between the first and second branches indicated by the first and second exhaust gas sensors.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: August 23, 2011
    Assignee: Ford Global Technologies, LLC
    Inventor: Ross Dykstra Pursifull
  • Patent number: 7992388
    Abstract: A method for estimating the output temperature of the output compressor of a two-stage turbocharger. The method includes: storing a composite relationship relating temperature ratio across a pair of compressors of the two-stage turbocharger as a function of mass flow through such pair of compressors and pressure drop across the pair of the compressors; calculating the pressure ratio equal to the pressure at an input to the first one of the pair of compressors to the pressure at the output of the second one of the pair compressor; using the composite relationship and an output of a mass flow at the input to the first one of the pair of compressors and the calculated pressure ratio to determine the temperature ratio across the pair of compressors; and calculating the estimated output temperature of the second one of the pair of compressors by multiplying the determined temperature ratio across the pair of compressors by a temperature at the input of the first one of the pair of compressors.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: August 9, 2011
    Assignee: Ford Global Technologies, LLC
    Inventors: Yong Shu, Michiel J. Van Nieuwstadt, Diana D. Brehob
  • Publication number: 20110185724
    Abstract: A two-stage exhaust gas turbocharger for an internal-combustion engine having an exhaust manifold is provided. In the exhaust gas flow direction a first high-pressure turbocharger and a second high-pressure turbocharger are arranged parallel to one another and a low-pressure turbocharger is arranged in series behind the latter. The two high-pressure turbine housings can be arranged on the exhaust manifold on one side and the low-pressure turbine housing can be arranged on the exhaust manifold on the other side. The exhaust gas coming from the high-pressure turbine housings is guided through a flow duct in or on the exhaust manifold to the low-pressure turbine housing. By way of this construction of the two-stage exhaust gas turbocharging, a compact construction is achieved resulting in cost savings.
    Type: Application
    Filed: April 14, 2011
    Publication date: August 4, 2011
    Applicant: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Wilfried Barth, Gerald Gruber, Stefan Ablinger, Werner Mietschnig
  • Publication number: 20110174247
    Abstract: The following description relates to a central turbocharger configuration in a V-engine with two turbochargers. In one example approach, A V-engine having a first and second bank forming a valley therebetween, comprises: first and second in-board exhaust manifolds on the first and second banks, respectively; first and second turbines coupled to the first and second manifolds, respectively; the first and second turbines between the first and second exhaust manifolds; a passage intermediate to and coupling outlets of the first and second turbines; and a junction branching from the passage downward into the valley.
    Type: Application
    Filed: January 21, 2010
    Publication date: July 21, 2011
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Patrick Matthews, Fadi Maroun Naddaf
  • Publication number: 20110168110
    Abstract: An internal combustion engine includes a number of power cylinders furnishing exhaust gases to at least two turbochargers having a common air inlet housing which is divided into a separate compressor housing for each of the turbochargers.
    Type: Application
    Filed: January 11, 2010
    Publication date: July 14, 2011
    Inventors: Patrick Matthews, David Krenk, Christopher William Newman, Fadi Maroun Naddaf
  • Patent number: 7975480
    Abstract: An apparatus, system, and method are disclosed for preventing overspeed of a turbocharger. The apparatus includes a two-stage turbocharger system with a high pressure and a low pressure turbocharger. A bypass valve that divides an exhaust flow into a primary exhaust flow and a bypass flow. A relief valve vents a portion of the primary exhaust flow around the high pressure turbocharger. The low pressure turbocharger receives the bypass flow, the primary exhaust flow, and the vented portion of the primary exhaust flow. The apparatus includes a controller having a protection condition module that determines a protection indicator, and a relief valve control module that controls the relief valve according to the protection indicator.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: July 12, 2011
    Assignee: Cummins, Inc
    Inventor: Jeffery Matthews
  • Patent number: 7975478
    Abstract: An internal combustion engine (100) includes an intake manifold (106) and at least one exhaust manifold (108). A first compressor (120) that is operably associated with a first turbine (128) has a first air inlet (126) and a first air outlet (118). The first air inlet (126) is adapted to admit air into the first compressor (120), and the first air outlet (118) is fluidly connected to the intake manifold (106). The first turbine (128) fluidly communicates with a tailpipe (138). A second compressor (124) is operably associated with a second turbine (160) and has a first tributary fluid inlet (152), a second tributary fluid inlet (154), and a second fluid outlet (122). The first tributary fluid inlet (152) is fluidly connected to the tailpipe (138) at a junction (147), the second tributary fluid inlet (154) is adapted to admit air into the second compressor (124), and the second fluid outlet (122) is fluidly connected to the intake manifold (106).
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: July 12, 2011
    Assignee: International Engine Intellectual Property Company, LLC
    Inventors: Martin R. Zielke, Qianfan Xin
  • Patent number: 7966816
    Abstract: An internal combustion engine includes a number of power cylinders furnishing exhaust gases to at least two turbochargers having a common air inlet housing which is divided into a separate compressor housing for each of the turbochargers.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: June 28, 2011
    Assignee: Ford Global Technologies
    Inventors: Patrick Matthews, David Krenk, Christopher William Newman, Fadi Maroun Naddaf
  • Patent number: 7958730
    Abstract: The invention concerns turbochargers, or more particularly to multivariable dual stage series turbochargers having two degrees of freedom. A multistage series turbocharger apparatus has a low pressure turbocharger comprising a low pressure compressor and a low pressure turbine; a high pressure turbocharger comprising a high pressure compressor and a high pressure turbine, and a exhaust gas recirculation device. A controller controls the operation of at least two of the low pressure compressor, high pressure compressor, low pressure turbine, high pressure turbine, and exhaust gas recirculation device such that at least one operating parameter is maintained at about a selected value.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: June 14, 2011
    Assignee: Honeywell International Inc.
    Inventor: Gregory E. Stewart
  • Patent number: 7950229
    Abstract: An exhaust system has first and second exhaust gas turbochargers for a V-8 internal combustion engine having an ignition sequence of a 90° crank angle from one cylinder to the next in each of two cylinder banks. The exhaust system includes a first-through-fourth exhaust lines from the cylinders to the two exhaust gas turbochargers, with two cylinders respectively being assigned to an exhaust line. One exhaust turbocharger is respectively assigned to two exhaust lines. The two cylinders assigned to an exhaust line having an ignition interval of a 360° crank angle. The first and the second exhaust lines assigned to an exhaust gas turbocharger having an ignition sequence displaced with respect to one another by a 180° crank angle. As a result, the opening phase of the charge cycle intake valves can be prolonged, which leads to a significantly higher power of the internal combustion engine.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: May 31, 2011
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Christian Schwarz, Hubert Graf, Werner Verdoorn
  • Patent number: 7950228
    Abstract: A turbo charge system of an engine minimizes energy loss of exhaust gas as a consequence of a crossover pipe that connects exhaust manifolds respectively mounted to cylinder heads at both sides of the engine with each other and that is mounted in each cylinder head, and the crossover pipe is formed as a double pipe structure. The turbo charge system of the engine may include a pair of exhaust manifolds respectively mounted to cylinder heads at both sides of the engine; a pair of turbo chargers connected respectively to the pair of exhaust manifolds and increasing intake air amount by using energy of exhaust gas; and a crossover pipe connecting the pair of exhaust manifolds with each other, wherein a crossover pipe is mounted in each cylinder head.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: May 31, 2011
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Sung Il Yoon, Hyoung-Hyoun Kim
  • Patent number: 7941999
    Abstract: In an internal combustion engine with at least one turbocharger supplying compressed air to the engine cylinders which are divided into a first group and a second group, a first exhaust gas line connecting a first section of an exhaust gas collection line to the turbine, a recirculation line for returning exhaust gas from a second section of the exhaust gas collection line to the charge air supply line, a first control device controls the exhaust gas flow from a section of the cylinders to the first section of the exhaust gas collection line, a second control device controls the exhaust gas flow to the turbine and a third control device controls the exhaust gas flow recirculated to the charge air supply line for the cylinder.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: May 17, 2011
    Assignee: MTU Friedrichshafen GmbH
    Inventors: Werner Kasper, Rolf Traub
  • Patent number: 7937942
    Abstract: A turbocharger system for an internal combustion engine having at least one exhaust line for evacuating exhaust gases from the combustion chamber of the engine and at least on inlet line for supplying air to the combustion chamber. A high-pressure turbine interacts with a high-pressure compressor and a low-pressure turbine interacts with a low-pressure compressor to extract energy from the exhaust flow of the engine and pressurize the inlet air of the engine. Both compressor stages are of the radial type and are provided with compressor wheels having backswept blades, in which a blade angle between an imaginary extension of the blade along the centerline between root section and tip section in the direction of the outlet tangent and a line connecting the center axis of the compressor wheel to the outer point of the blade, is at least about 40 degrees.
    Type: Grant
    Filed: November 15, 2005
    Date of Patent: May 10, 2011
    Assignee: Volvo Lastvagnar AB
    Inventors: Ulrich Gobert, Lars Sundin, Magnus Ising, Daniel Grunditz, Per Andersson, Kent Giselmo, Sebastian Krausche
  • Patent number: 7926270
    Abstract: A method for improving turbocharger waste-gate control is presented. The method can reduce turbocharger flow oscillation, at least during some conditions.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: April 19, 2011
    Assignee: Ford Global Technologies, LLC
    Inventors: Corey Weaver, Ross Dykstra Pursifull
  • Patent number: 7908860
    Abstract: For an internal combustion engine having two cylinder banks forming a V-shaped cylinder block, a turbocharger system including a high pressure turbocharger disposed in a valley between the cylinder banks, a first low-pressure turbocharger disposed adjacent an outer side of one of the cylinder banks, and a second low-pressure turbocharger disposed adjacent an outer side of the second cylinder bank. Intake and exhaust ducts connect the components of the engine and turbocharger system to and electronically controlled valves associated with the ducts permit the system to operate either in a split series mode or a low-pressure-only mode.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: March 22, 2011
    Assignee: Ford Global Technologies, LLC
    Inventors: Christopher Bernard Trombetta, Michael Leon Briggs, Norbert Andreas Schorn, Daniel Joseph Styles
  • Publication number: 20110061381
    Abstract: A two-stage turbocharging system with a high pressure (HP) turbine and a low pressure (LP) turbine, exhaust piping connecting an engine to the HP turbine inlet, exhaust piping connecting the HP turbine outlet to the LP turbine inlet, piping connecting the LP turbine outlet to an aftertreatment device, and branched bypass piping having an inlet and first and second branches, the inlet connected to the engine to HP turbine inlet exhaust piping, the first branch outlet connected to the LP turbine inlet, the second branch outlet connected to the aftertreatment device, and an R2S valve in the first branch and a warm-up valve in said second branch. By opening of the valve, exhaust gas can bypass both the HP and LP turbines and flow to, e.g., the catalytic converter. The R2S valve and the warm-up valve may be integrated into a single exhaust flow control unit.
    Type: Application
    Filed: February 24, 2009
    Publication date: March 17, 2011
    Applicant: BORGWARNER INC.
    Inventors: Michael E. Harris, Brock Fraser
  • Publication number: 20110041497
    Abstract: A Two-stage turbocharged engine system includes, but is not limited to an internal combustion engine, a high-pressure turbocharger having a high-pressure turbine for rotating a high-pressure compressor through a connecting shaft, a low-pressure turbocharger having a low-pressure turbine for rotating a low-pressure compressor by means of a connecting shaft, a low-pressure intake line for fluidly connecting the outlet of low-pressure compressor to the inlet of high-pressure compressor, an high-pressure intake line for fluidly connecting the outlet of high-pressure compressor to an air cooler, and a bypass device for selectively fluidly connecting a first branching point located in low-pressure intake line to a second branching point located in high-pressure intake line, to thereby bypassing the high-pressure compressor; said bypass device being located closer to the low-pressure compressor than to the high-pressure compressor.
    Type: Application
    Filed: August 20, 2010
    Publication date: February 24, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Roberto CAVALLO, Roberto GOLISANO, Gianmarco BORETTO, Eugenio MANTA
  • Patent number: 7886530
    Abstract: An internal combustion engine includes a turbocharger having a turbine, a first set of combustion cylinders, and a second set of combustion cylinders. A first particulate trap is in fluid communication between the first set of combustion cylinders and the turbine. A second particulate trap is in fluid communication between the second set of combustion cylinders and the turbine.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: February 15, 2011
    Assignee: Deere & Company
    Inventors: Richard Edward Winsor, Kirby Jon Baumgard
  • Patent number: 7877981
    Abstract: The description relates to a control strategy for assisting regeneration of a particulate filter for a turbocharged diesel V-engine. The engine has two cylinder banks, a first cylinder bank coupled to a first exhaust pipe and a second cylinder bank coupled to a second exhaust pipe. The two exhaust pipes are in communication with one another by a connecting pipe and have two exhaust gas turbochargers each connected in a respective one of the exhaust pipes. The first exhaust pipe being provided with an exhaust shut-off valve in order to operate the engine either with a single turbocharger when the valve is in its closed position or with the two turbochargers when the valve is in its open position. The first exhaust pipe is connected to a diesel particulate filter (DPF) and the second exhaust pipe is connected to a diesel oxidation catalyst and to the DPF.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: February 1, 2011
    Assignee: Ford Global Technologies, LLC
    Inventor: Philip James Edward Newman
  • Patent number: 7874154
    Abstract: A method and a system for cooling an internal combustion engine having charge air feed, which has a first and a second cooling loop, of which the first cooling loop is operated at a higher temperature level than the second cooling loop, and in which the charge air feed has at least one intercooling unit which is thermally coupled to the second cooling loop, having a controllable coolant throughput. The system includes at least one shutdown element in the second cooling loop for throttling the coolant throughput in the second cooling loop to 0 (zero). Coolant throughput may be shut down during the operation of the internal combustion engine as a function of an operating parameter of a vehicle component.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: January 25, 2011
    Assignee: MAN Nutzfahrzeuge Oesterreich AG
    Inventors: Gottfried Raab, Peter Kislinger, Heidrun Klinger
  • Patent number: 7861525
    Abstract: A two-volute low pressure turbocharger is provided with a VGT mechanism in one turbine volute only.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: January 4, 2011
    Assignee: The United States of America as represented by the Administrator of the U.S. Environmental Protection Agency
    Inventor: David James Haugen
  • Publication number: 20100293944
    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: Application
    Filed: May 21, 2010
    Publication date: November 25, 2010
    Inventor: Gary Hunter
  • Publication number: 20100263375
    Abstract: A boost system comprising a turbocharger, a supercharger operable as either a compressor or an expander. Air flows through the turbocharger, optionally through a first charge air cooler CAC1, then through the supercharger, a second charge air cooler CAC2, and into the engine. At low engine speeds, the supercharger may be used to compress air, which is tempered by CAC2. At high engine speeds, the turbocharger has excess capacity, resulting in a hot compressed air stream. The supercharger operates as an expander to cool the air stream and reduce the air pressure and temperature to a desired level. Temperature may be reduced to a level below that desired for combustion; CAC2 then rewarms the air, thereby storing cooling capacity. A useful embodiment incorporates a turbocharger with a hybrid gas/electric or diesel/electric engine arrangement wherein a supercharger and a starter/generator/motor are disposed on a disconnectable secondary drive powered by the engine.
    Type: Application
    Filed: September 11, 2009
    Publication date: October 21, 2010
    Inventor: Malcolm James Grieve
  • Patent number: 7810328
    Abstract: A method is described for controlling the exhaust temperature of an emission controlling device in the exhaust using both a higher heat loss path and a lower heat loss path along with parallel/sequential turbocharging. The exhaust path is adjusted based on a rate of change of temperature control error.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: October 12, 2010
    Assignee: Ford Global Technologies, LLC
    Inventors: Michael Goebelbecker, Kevin Murphy
  • Patent number: 7810329
    Abstract: The invention relates to an internal combustion engine, especially of a motor vehicle, which comprises an air path for intake air in which a mechanically driven charge unit (20), especially a compressor, which can be connected and disconnected by means of a coupling (36), an exhaust gas turbocharger (18), an intake pipe (32), connected to air inlets of a cylinder block (10) of the internal combustion engine, and a charge cooler (34) are mounted. One pressure outlet (35) of the mechanically driven charge unit (20 is directly connected to the intake pipe (32) and one pressure outlet (24) of the exhaust gas charger (18) is connected to an intake inlet (28) of the mechanically driven charge unit (20). The pressure outlet (24) of the exhaust gas charger (18) is connected to the intake inlet (28) of the mechanically driven charge unit (20) via an on-off butterfly valve (26) and upstream of said on-off butterfly valve (26) to the intake pipe (32) via a load butterfly valve (30).
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: October 12, 2010
    Assignee: Volkswagen AG
    Inventors: Florian Noodt, Marc-Jochen Schweizer, Manfred Kloft
  • Patent number: 7805939
    Abstract: A torque base control unit calculates target torque based on an accelerator position and engine speed. The control unit further executes calculation of target airflow rate, calculation of target intake pressure, and calculation of target boost pressure based on the target torque. Target throttle position is calculated based on the target airflow rate, target intake pressure, target boost pressure, actual boost pressure, and throttle passed intake temperature. An assist control unit calculates target turbine power based on the target airflow rate and the target boost pressure calculated by the torque base control unit and calculates actual turbine power based on exhaust information. Assist power of a motor attached to a turbocharger is calculated based on the power difference between the target turbine power and the actual turbine power.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: October 5, 2010
    Assignee: Denso Corporation
    Inventors: Kayoko Kimoto, Daiji Isobe
  • Publication number: 20100242473
    Abstract: A four-cylinder engine has a valve overlap period during which an exhaust valve and an intake valve of each cylinder are both opened. Cylinder pipes for cylinders having adjacent ignition timings of the engine are connected to a turbo charger, and cylinder pipes for cylinders having adjacent ignition timings are connected to another turbo charger. Accordingly, a properly great supercharging pressure can be obtained in a low engine-speed area.
    Type: Application
    Filed: February 23, 2010
    Publication date: September 30, 2010
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Yoshihisa NOU, Naoyuki YAMAGATA
  • Patent number: 7788923
    Abstract: An internal combustion engine (100) includes a first exhaust manifold (120), and a second exhaust manifold (118) fluidly connected to the first exhaust manifold (120) through an exhaust valve (122). An exhaust gas recirculation (EGR) cooler (124) constantly fluidly connects the second exhaust manifold (118) with an intake manifold (112). A turbocharger (102) has a turbine (126) in fluid communication with the first exhaust manifold (120), and a compressor (132) in fluid communication with a supercharger (140). A charge air cooler (150) fluidly connects the supercharger (140) with the intake manifold (112).
    Type: Grant
    Filed: February 2, 2006
    Date of Patent: September 7, 2010
    Assignee: International Engine Intellectual Property Company, LLC
    Inventor: Robert L. Rowells
  • Patent number: 7783410
    Abstract: A pressure surface is propelled within an engine chamber. Air is introduced into the chamber. The air in the chamber is compressed with the pressure surface. The compressed air is charged with fuel. The fuel is combusted to propel the pressure surface within the chamber. The air and the combusted fuel are exhausted from the chamber. A turbocharger is powered with the exhaust to compress air to an extremely high level, 20+ atmospheres. The air compressed by the turbocharger is passed into the chamber to propel the pressure surface in the chamber without additional fuel. Since compressing the high pressure air in the chamber would cancel the gains of the previous cycle and possibly damage the engine, this invention proposes to open the exhaust valve at the bottom of the intake stroke to relieve the excess pressure, close the exhaust valve and compress the remaining air in the cylinder.
    Type: Grant
    Filed: July 18, 2007
    Date of Patent: August 24, 2010
    Inventor: Curtis O. Anderson
  • Patent number: 7779633
    Abstract: The present application relates to a method for determining the exhaust back pressure p3 upstream of a turbine, which is arranged in the exhaust line of an internal combustion engine equipped with an engine management system (1), which exhaust line is intended to lead off the exhaust gas from a number cylinders of the internal combustion engine. The method includes determining the exhaust back pressure p3 upstream of a turbine, by means of which the exhaust back pressure p3 can still be determined precisely but at little cost compared to methods known in the state of the art.
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: August 24, 2010
    Assignee: Ford Global Technologies, LLC
    Inventors: Daniel Roettger, Christian Winge Vigild, Alain Marie Roger Chevalier, Simon Petrovic, Evangelos Karvounis
  • Patent number: 7775043
    Abstract: A system for controlling boost pressure at various different altitudes of operation of a turbo charged internal combustion engine includes a wastegate valve, an actuator, and a controller. Signals delivered from an engine speed sensor, a boost pressure transducer, a barometric pressure sensor, and a turbocharger speed sensor are processed in the controller. A control signal delivered from the controller to the actuator controls the position of the wastegate valve, bypass of exhaust gasses, and the speed of the turbocharger. The controller is configured to compare the turbocharger speed to a predetermined threshold value and determine the control signal based on the comparison.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: August 17, 2010
    Assignee: Caterpillar Inc
    Inventors: Steven J. Funke, James H. Mutti
  • Patent number: 7770393
    Abstract: A method for controlling flow differences in a turbocharged internal combustion engine is presented. In one example, the description includes a method for adjusting valve timing to reduce flow variation between two compressors.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: August 10, 2010
    Assignee: Ford Global Technologies, LLC
    Inventors: Julia Helen Buckland, Mrdjan J. Jankovic
  • Publication number: 20100191442
    Abstract: An internal combustion engine including an air intake pressurization device having an outlet from which air at a pressure substantially greater than ambient air pressure is expelled, an expansible combustion chamber into which air is received from the device outlet and from which exhaust gases are expelled, first and second intake valves and one or more exhaust valves, each valve having open and closed states. The combustion chamber is in periodic fluid communication with the device outlet through at least one of the first and second intake valves, and exhaust gases are expelled from the combustion chamber via the exhaust valve(s).
    Type: Application
    Filed: January 22, 2010
    Publication date: July 29, 2010
    Applicant: TURBO INNOVATION, LLC
    Inventor: William H. Kirk
  • Patent number: 7757489
    Abstract: An engine configuration includes an internal combustion engine with a plurality of cylinders, at least one turbocharger and a first and a second exhaust gas tract. A turbine of the at least one turbocharger is associated with the first exhaust gas tract. Increased torque and increased power can be achieved when a bypass exhaust gas line emerging from at least one cylinder, which is associated with the first exhaust gas tract, is connected to the first exhaust gas tract such that it bypasses the at least one turbocharger.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: July 20, 2010
    Assignee: Volkswagen Aktiengesellschaft
    Inventors: Helmut Endres, Ekkehard Pott, Fred Thiele, Jörg Theobald
  • Patent number: 7752844
    Abstract: In an engine braking method and an internal combustion engine including an engine braking arrangement, wherein the engine has high pressure and low pressure exhaust gas turbochargers connected in series, with a bypass (12) around the high-pressure compressor allowing the air mass flow selectively to bypass the high pressure compressor which is arranged near the engine, and bypasses around both turbines permitting the exhaust gas mass flow selectively to bypass the high-pressure exhaust gas turbine which is near the engine and also the low pressure turbine the intake air and the exhaust gas flow are controlled so as to accurately provide for a desired engine braking power for example for maintaining a desired vehicle speed.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: July 13, 2010
    Assignee: Daimler AG
    Inventors: Martin Dietz, Peter Fledersbacher, Gernot Hertweck, Siegfried Sumser
  • Patent number: 7748218
    Abstract: A control system for operating vanes of a turbocharger turbine (16T) and for operating a turbine-shunting bypass valve (22) according to a strategy wherein a processor executes an algorithm for selectively unenabling the control system to operate the bypass valve when the control system is operating the vanes to adjust exhaust back-pressure on the engine within a range of effectiveness for the vanes to control the exhaust back-pressure and enabling the control system to operate the bypass valve when the control system has operated the mechanism to a limit of the range of effectiveness.
    Type: Grant
    Filed: June 26, 2006
    Date of Patent: July 6, 2010
    Assignee: International Engine Intellectual Property Company, LLC
    Inventors: Michael J. McNulty, Christopher R. Ciesla
  • Publication number: 20100146965
    Abstract: An engine system is disclosed. The engine system includes an engine, an intake system for providing intake air to the engine and an exhaust system receiving exhaust gas from the engine. The engine system also includes a first exhaust turbine arranged downstream of the engine and a second and third exhaust turbines coupled in parallel and arranged downstream of the first exhaust turbine. A first valve is associated with the second and third exhaust turbines, the first valve configured to at least partially restrict exhaust gas to one of the second and third exhaust turbines and increase exhaust gas to the other turbine. The engine system also includes an exhaust gas recirculation system configured to redirect at least a portion of exhaust gas from the exhaust system to the intake system.
    Type: Application
    Filed: December 16, 2008
    Publication date: June 17, 2010
    Inventors: William Lanier Easley, JR., David Andrew Pierpont
  • Patent number: 7735320
    Abstract: A control system for a dual stage turbo includes a control module, a variable geometry turbine (VGT) module, and a bypass valve module. The control module generates a turbo control signal based on an manifold absolute pressure (MAP) and a desired MAP. The VGT module generates a VGT control signal to actuate vanes in a VGT based on the turbo control signal. The bypass valve module generates a bypass control signal based on the turbo control signal and the VGT control signal. The bypass control signal actuates a valve to bypass the VGT.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: June 15, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventor: Ognyan N. Yanakiev
  • Publication number: 20100139268
    Abstract: The invention relates to an internal combustion engine with at least one cylinder which has at least two exhaust valves which are connected to exhaust gas lines in which there are the turbines of the exhaust gas turbochargers which have compressors for the charging air of internal combustion engines. It is provided that downstream from the compressors there is a merge (23) for the charging air flows (21) of the compressors and that there is at least one externally controllable valve (25) downstream from at least one of the compressors and upstream from the merge (23). Furthermore, the invention relates to a method for operating such an internal combustion engine. It is provided that downstream from the compressors the charging air flows of the compressors are merged and that at least downstream from one of the compressors and upstream from the merge, externally controllable blocking or choking of at least one of the charging air flows can take place.
    Type: Application
    Filed: September 24, 2009
    Publication date: June 10, 2010
    Applicant: Audi AG
    Inventors: Frank HUBER, Markus SONNER, Guido EHLERS
  • Patent number: 7712312
    Abstract: As one example, an apparatus configured to regulate flow in an exhaust passage of an internal combustion engine system is provided.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: May 11, 2010
    Assignee: Ford Global Technologies, LLC
    Inventor: Patrick Sexton