Plural Superchargers Patents (Class 60/612)
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Patent number: 7665302Abstract: A device and method for supplying fresh air to a turbocharged piston internal combustion engine are described. According to the invention, a fresh gas line section of an intake manifold has an adjustable flap, and inlet and outlet ports. An adjustment device is coupled to the flap for adjusting the flap. A compressed air port having an opening leading into a chamber of the fresh gas line between the flap and the outlet is provided, and a quantity regulating device with a valve to control the compressed air is also provided. An electronic control unit controls the quantity regulating device and the adjustable flap, so that the fully opened position of the flap corresponds to a fully blocked position of the quantity regulating device.Type: GrantFiled: August 24, 2007Date of Patent: February 23, 2010Assignee: Knorr-Bremse Systeme fuer Nutzfahrzeuge GmbHInventors: Huba Nemeth, Eduard Gerum
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Publication number: 20100031905Abstract: An exhaust system has first and second exhaust gas turbochargers for a V-8 internal combustion engine. A first cylinder bank includes four cylinders arranged in series side-by-side, and a second cylinder bank situated opposite the first cylinder bank includes the other four cylinders arranged in series side-by-side. The internal combustion engine has an ignition sequence of a 90° crank angle from one cylinder to the next. The exhaust system includes a first, a second, a third and a fourth exhaust line 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.Type: ApplicationFiled: August 7, 2009Publication date: February 11, 2010Applicant: Bayerische Motoren Werke AktiengesellschaftInventors: Christian SCHWARZ, Hubert Graf, Werner Verdoorn
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Publication number: 20100024416Abstract: An exhaust system for a use with a combustion engine is provided. The exhaust system may have a first exhaust manifold configured to receive exhaust from the engine, and a first turbocharger driven by exhaust from the first exhaust manifold. The exhaust system may also have a second exhaust manifold configured to receive exhaust from the engine in parallel with the first exhaust manifold, and a second turbocharger driven by exhaust from the second exhaust manifold and having a different flow capacity than the first turbocharger. The exhaust system may further have an exhaust gas recirculation circuit in fluid communication with the second exhaust manifold.Type: ApplicationFiled: July 31, 2008Publication date: February 4, 2010Inventors: John R. Gladden, David Andrew Pierpont, John P. Timmons
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Patent number: 7644585Abstract: A multi-stage turbocharging system recovers exhaust energy that is conventionally lost in bypassing exhaust flow from one stage to another in a multi-stage turbocharging system. The exhaust energy is preserved through converting a portion of the exhaust energy of the bypassed flow from pressure to kinetic energy (velocity) by passing the bypassed flow through a VGT vane outlet or other variable geometry valve/nozzle, and then not allowing the accelerated flow to dissipate energy before reaching the subsequent stage's turbine wheel, where the accelerated flow may then be converted to a mechanical rotational force by the lower pressure turbine's wheel.Type: GrantFiled: July 1, 2005Date of Patent: January 12, 2010Assignee: The United States of America as represented by the Administrator of the U.S. Environmental Protection AgencyInventor: David James Haugen
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Patent number: 7644586Abstract: There is provided a method of controlling an engine system. The engine system comprises an internal combustion engine, a supercharging system having at least one supercharger to boost intake air to the internal combustion engine, a turbine, and a motor. The turbine receives an exhaust gas flow from an exhaust system of the internal combustion engine and is capable of at least partly driving the supercharging system. The motor is capable of at least partly driving the supercharging system.Type: GrantFiled: July 11, 2007Date of Patent: January 12, 2010Assignee: Mazda Motor CorporationInventor: Naoyuki Yamagata
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Patent number: 7640745Abstract: A high-pressure system and method utilizing an input fluid. The system includes a reactor treating a material to produce an effluent having an energy content, a plurality of stages compressing the input fluid in a stepwise manner providing a high-pressure reactor input stream to the reactor, and a cascading effluent energy recovery system mechanically communicating with the plurality of stages. The cascading effluent energy recovery system imparts a portion of the energy content of the effluent into each of the plurality of stages powering that stage. The method includes receiving an input fluid, compressing the input fluid over a plurality of stages producing the high-pressure stream, providing the high-pressure stream to the reactor, recovering a portion of the energy content of the effluent at each of the plurality of stages, and using each the portion of the energy in compressing the input fluid at a corresponding respective stage.Type: GrantFiled: January 15, 2007Date of Patent: January 5, 2010Assignee: Concepts ETI, Inc.Inventor: David Japikse
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Publication number: 20090308050Abstract: A gas turbine engine comprising a compressor, a combustion chamber, and at least two turbines mounted oppositely to the combustion chamber, such that the gas turbine engine is capable of generating multidirectional thrust.Type: ApplicationFiled: June 13, 2008Publication date: December 17, 2009Inventor: Kamyar Brothers
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Patent number: 7628016Abstract: A method of effecting multi-stage supercharging in internal combustion machines comprising a supercharging system, wherein fresh air is first routed through a low-pressure compressor. At least a portion of the compressed air stream is compressed further in a high-pressure compressor, and the rest of the fresh air compressed in the low-pressure compressor is routed around the high-pressure compressor via a compressor bypass. All the fresh air is ultimately delivered to the internal combustion engine. The compressor bypass is opened or closed by a self-actuating valve in dependence on the differential pressure, the compressor bypass opening as soon as the pressure downstream from the high-pressure compressor is lower than the pressure upstream of the high-pressure compressor.Type: GrantFiled: August 9, 2005Date of Patent: December 8, 2009Assignee: Robert Bosch, GmbHInventor: Guenther Vogt
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Publication number: 20090293476Abstract: 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: ApplicationFiled: May 30, 2008Publication date: December 3, 2009Inventor: Raymond Geraint Evans
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Patent number: 7610758Abstract: In a supercharged internal combustion engine having a plurality of cylinders which are arranged in at least one cylinder bank, preferably a V-type engine with an exhaust gas turbocharger including a compressor, which is arranged in an intake line of the internal combustion engine and a turbine which is arranged in an exhaust gas collection line, the exhaust gas of a plurality of cylinders of the cylinder bank is combined in an exhaust gas collection line, while at least one cylinder of a cylinder bank has a separate exhaust gas line which bypasses the exhaust gas turbocharger and joins the exhaust gas line downstream of the turbine.Type: GrantFiled: May 9, 2007Date of Patent: November 3, 2009Assignee: Daimler AGInventors: Joachim Augstein, Frank Hangs, Arkadi Kudashev, Christian Pies
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Patent number: 7607302Abstract: A turbocharger system comprising first and second turbochargers, configured in series, where the turbochargers hand over control from one turbocharger to the other, which incorporates switching adjustment terms at the point of transition to ensure a smooth transition.Type: GrantFiled: September 6, 2004Date of Patent: October 27, 2009Assignee: Ricardo UK LimitedInventors: Malcolm Fry, Richard C. E. Cornwell, Richard King, Matthew Gerard Beasley
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Publication number: 20090265080Abstract: A turbocharger system comprising first and second turbochargers, configured in series, where the turbochargers hand over control from one turbocharger to the other, which incorporates switching adjustment terms at the point of transition to ensure a smooth transition.Type: ApplicationFiled: June 30, 2009Publication date: October 22, 2009Inventors: Malcolm Fry, Richard C.E. Cornwell, Richard King, Matthew Gerard Beasley
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Patent number: 7600380Abstract: The present invention provides a two-stage turbocharger unit having a valve that will help to create a smooth transition of exhaust gas energy from the high-pressure turbine (HP) turbine to the low-pressure (LP) turbine. The LP and HP turbines are positioned such that the valve can be in one position to force all of the exhaust gas to flow through the HP turbine and when in another position to force all of the exhaust gas through the LP turbine. When the valve is placed in an intermediate position, the exhaust gas can be variably directed to flow through both turbines, with the percentage of exhaust gas flowing through each turbine being dependent on the position of the valve.Type: GrantFiled: May 10, 2005Date of Patent: October 13, 2009Assignee: BorgWarner Inc.Inventors: Thomas A. Grissom, Hartmut Claus
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Publication number: 20090249786Abstract: A turbomachine system comprises a first turbocharger comprising an exhaust gas flow first turbine for location in an exhaust path and a first compressor driven by said first turbine; a turbomachine for location in the exhaust path upstream or downstream of said first turbocharger and comprising an exhaust gas flow second turbine and a second compressor driven by said second turbine. The first turbine has an outlet that is in fluid communication with an inlet of the second turbine. One of said first and second turbines is a radial outflow turbine. The arrangement provides for a relatively compact package. The radial outflow turbine may have a particular structure in which there is provided a deflector member at or near its inlet for directing the gas outwards, a stator for introducing swirl and a downstream turbine rotor. A shroud is fixed to blades of the turbine rotor to prevent leakage and to provide additional structural rigidity.Type: ApplicationFiled: January 9, 2009Publication date: October 8, 2009Inventors: Stephen Garrett, Richard Owen Evans
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Publication number: 20090241540Abstract: A system for recovering engine exhaust energy is provided. The system includes an exhaust system including a first exhaust branch and a second exhaust branch. The system includes a first and a second group of exhaust valves associated with a plurality of engine cylinders. The system also includes an energy recovering assembly. The system further includes a control mechanism configured to control at least one of the first and second groups of exhaust valves according to a determined timing strategy based on at least one engine operating parameter.Type: ApplicationFiled: March 31, 2008Publication date: October 1, 2009Inventor: Wade J. Robel
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Patent number: 7587898Abstract: With reference to FIG. 1, the present invention relates to an internal combustion engine comprising: a combustion chamber (10); first (A) and second (B) inlet valves controlling flow of air into the combustion chamber, first (C) and second (D) exhaust valves; and first (16) and second (18) turbochargers. The first turbocharger (16) is connected to the first inlet valve (A) and the second turbocharger (18) is connected to the second inlet valve (B). The first turbocharger (16) is connected to the first exhaust valve (C) and receives only combusted gases expelled via the first exhaust valve (C). The second turbocharger (18) is connected to the second exhaust valve (D) and all combusted gases expelled via the second exhaust valve flow to the second turbocharger (18) without passing through the first turbo-charger (16).Type: GrantFiled: January 14, 2005Date of Patent: September 15, 2009Assignee: Lotus Cars LimitedInventor: James William Griffith Turner
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Patent number: 7581394Abstract: A nozzle device for a turbine of a turbocharger according to the present invention comprises variable annular nozzle (2) defined between an inboard wall (3) and an outboard wall (4), wherein said outboard wall (4) is axially movable for completely closing said variable annular nozzle (2).Type: GrantFiled: December 10, 2003Date of Patent: September 1, 2009Assignee: Honeywell International Inc.Inventors: Jean-Luc Perrin, Giorgio Figura
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Patent number: 7578129Abstract: A multiple-turbocharger system for an internal combustion engine includes a first turbocharger comprising a first compressor driven by a first turbine, the first turbine operable to be driven by exhaust gas from the engine; a second turbocharger comprising a second compressor driven by a second turbine, the second turbine operable to be driven by exhaust gas from the engine; a first conduit arranged for supplying exhaust gas from the engine to the first turbine, and a second conduit arranged for supplying exhaust gas from the engine to the second turbine; and a valve coupled with the second conduit and switchable between an open condition allowing exhaust gas flow from the second conduit to the second turbine, and a closed condition substantially preventing exhaust gas flow from the second conduit to the second turbine but allowing a leakage flow to the second turbine sufficient to keep the second turbine rotating.Type: GrantFiled: September 10, 2007Date of Patent: August 25, 2009Assignee: Honeywell International, Inc.Inventors: Jean-Luc Perrin, Philippe Renaud, Yannick Prebost
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Patent number: 7574862Abstract: A turbocharger unit for a multicylinder internal combustion engine has at least two exhaust lines for the evacuation of exhaust gases from the combustion chamber of the engine and at least one inlet line for the supply of air to the combustion chamber. The turbocharger unit includes at least one turbine which cooperates with at least one compressor to extract energy from the exhaust flow of the engine and pressurize the inlet air of the engine. The turbine is provided with a worm-shaped housing having at least two flow paths which are defined by guide tongues in the housing and which conduct mutually separate exhaust flows via stator blades to at least one turbine wheel. In order to maintain the kinetic energy in the separate exhaust flows, each respective guide tongue meets a stator blade extending toward the tongue.Type: GrantFiled: September 22, 2004Date of Patent: August 18, 2009Assignee: Volvo Lastvagnar ABInventors: Kent Giselmo, Per Andersson, Magnus Ising
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Patent number: 7571717Abstract: A turbocharger system for an engine includes first and second turbochargers, having air intake impellers which rotate in opposite directions. This enables the first and second turbochargers to be mounted on opposite sides of an engine in a symmetrical fashion, resulting in an aesthetically pleasing arrangement as well as air intake and exhaust piping being of the generally same length and configuration to optimize engine performance.Type: GrantFiled: March 21, 2007Date of Patent: August 11, 2009Inventor: Thomas N. Nelson
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Patent number: 7571608Abstract: A system is provided. The system includes an internal combustion engine having an intake manifold and an exhaust manifold. The system also includes a high pressure turbocharger having a variable geometry high pressure turbine drivingly coupled to a high pressure compressor, wherein the variable geometry high pressure turbine is driven by a first portion of exhaust gases from the exhaust manifold, wherein the high pressure compressor is configured to compress an intake air and to provide the compressed intake air to the intake manifold.Type: GrantFiled: November 28, 2005Date of Patent: August 11, 2009Assignee: General Electric CompanyInventors: Chenna Krishna Rao Boyapati, Krishnamurthy Vaidyanathan
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Publication number: 20090188251Abstract: 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: ApplicationFiled: January 24, 2008Publication date: July 30, 2009Inventors: Adrian P. Dale, Vivek A. Sujan
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Publication number: 20090183506Abstract: 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: ApplicationFiled: January 22, 2008Publication date: July 23, 2009Inventors: Christopher Bernard Trombetta, Michael Leon Briggs, Norbert Andreas Schorn, Daniel Joseph Styles
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Patent number: 7562530Abstract: A method for improving engine torque control during cylinder reactivation and cylinder deactivation for an engine having at least a turbo charger and a variable event valvetrain is presented. The method can improve vehicle drivability during cylinder mode transitions.Type: GrantFiled: April 5, 2006Date of Patent: July 21, 2009Assignee: Ford Global Technologies, LLCInventor: Ilya Kolmanovsky
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Patent number: 7559200Abstract: A multistage turbocompressor, designed as a geared compressor with an integrated gear, contains a central greater wheel (9) that meshes with a plurality of pinions (14, 15), wherein each pinion (14, 15) is mounted, in a manner adapted to rotate in unison, on a pinion shaft (16, 17). A bladed wheel of a compressor stage (II, III, IV, V) is arranged on the ends of each of the pinion shafts. The greater wheel (9) meshes with a driving pinion (8), which is mounted, in a manner adapted to rotate in unison, on a driving shaft 6 connected to a drive unit (1). The axis of the driving pinion (8) is arranged, with the axis of the greater wheel (9), in the same horizontal plane (20), and the driving pinion (8) meshes with a pinion (10) of a first compressor stage (I) mounted, in a manner adapted to rotate in unison, on a pinion shaft (11).Type: GrantFiled: January 17, 2006Date of Patent: July 14, 2009Assignee: MAN Turbo AGInventors: Michael Rodehau, Wulf-Dirk Andres, Klaus Thieme
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Publication number: 20090139230Abstract: A natural gas compression system is provided. The system may include a natural gas compressor configured to compress, and thereby pump, natural gas through a pipeline. The system may also include a natural gas burning engine, operatively coupled to the gas compressor, the engine being supplied with air by an induction system. The induction system may include a supercharger driven by the engine and configured to compress intake air and a turbocharger downstream from the supercharger and driven by exhaust gases produced by the engine. The induction system may also include a supercharger compressor bypass configured to selectively recirculate a portion of the compressed output of the supercharger upstream of the supercharger.Type: ApplicationFiled: November 24, 2008Publication date: June 4, 2009Inventors: Darryl Dean Baldwin, Gary Nelson Boyer, William Christopher Boley, Joel D. Hiltner
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Patent number: 7540148Abstract: A method and a device for operating at least one supercharger of an internal combustion engine is described, the actuating signal for at least one actuating element of the supercharger (waste gate actuator, electrical auxiliary compressor) being generated as a function of the exhaust gas volume flow in the exhaust tract of the internal combustion engine.Type: GrantFiled: July 20, 2002Date of Patent: June 2, 2009Assignee: Robert Bosch GmbHInventors: Ernst Wild, Sabine Wegener, Rainer Hild
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Patent number: 7540151Abstract: A drive device for a motor vehicle includes a multi-cylinder internal combustion engine and at least two exhaust gas turbocharger devices. At least one outlet valve is assigned to an exhaust gas turbocharger device of each cylinder of the internal combustion engine in such a manner that the exhaust gas duct assigned to this outlet valve is connected to the turbine wheel of the exhaust gas turbocharger device.Type: GrantFiled: November 22, 2006Date of Patent: June 2, 2009Assignee: Bayerische Motoren Werke AktiengesellschaftInventors: Martin Boehm, Jan Velthuis, Jan Tribulowski, Werner Verdoorn
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Patent number: 7540150Abstract: In an internal combustion engine provided with two exhaust gas turbochargers which each comprise a turbine in an exhaust line and one compressor in an intake section of the engine, two exhaust lines are provided which are each assigned to at least one of the exhaust gas turbines, an exhaust gas recirculation device being arranged between an exhaust line upstream of an exhaust gas turbine and the intake section downstream of a compressor and the two exhaust lines including bypass lines with a control valve for selectively permitting the exhaust gas to bypass the turbine closer to the engine.Type: GrantFiled: August 23, 2006Date of Patent: June 2, 2009Assignee: Daimler AGInventors: Wolfram Schmid, Siegfried Sumser
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Patent number: 7530229Abstract: An object of the present invention is to provide a control apparatus for an electrically assisted supercharger capable of effectively compensating for an output drop even with decrease in the atmospheric pressure. A control apparatus for an electrically assisted supercharger according to the present invention has a supercharger 20 disposed on an intake passage 5 of an internal combustion engine 1 mounted on a vehicle, and driven by an electric motor 20a, a controller 16, 21 for controlling the electric motor 20a to control a boost pressure, and a pressure detector 30 for detecting a state of the atmospheric pressure, and is characterized in that when the atmospheric pressure detected by the pressure detector 30 becomes less than a predetermined value, the controller 16, 21 makes a driving force of the electric motor 20a larger than that when the atmospheric pressure is not less than the predetermined value.Type: GrantFiled: March 2, 2005Date of Patent: May 12, 2009Assignee: Toyota Jidosha Kabushiki KaishaInventor: Koichi Akita
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Publication number: 20090107140Abstract: As one example, a method of operating a vehicle propulsion system including an engine having an intake manifold communicating with two compressors arranged in separate intake passages is provided. The method includes limiting a boost pressure provided to the engine by the first and the second compressors in response to a total flow rate of air consumed by the engine, said first and second compressors cooperating to provide the total flow rate; and choking the first compressor having a higher flow rate during an imbalanced flow condition between the first and the second compressors to limit a further reduction of a flow rate of intake air through the second compressor before the second compressor experiences surge.Type: ApplicationFiled: October 30, 2007Publication date: April 30, 2009Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventor: Ross Dykstra Pursifull
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Patent number: 7523736Abstract: A device for increasing the braking power of a multi-cylinder internal combustion engine of a vehicle during engine braking operation includes a turbo supercharger and an exhaust gas turbine for each stage thereof. A respective bypass line branches off from a region of two exhaust gas header pipes that can be blocked by throttle valves. Each bypass line communicates with a nozzle bore in a turbine wall. During an engine braking operation, two partial exhaust gas streams are branched off by the bypass lines from exhaust gas retained in blocked header pipes and strike turbine wheel blades at high pressure and high speed, whereupon the turbo supercharger is driven in an accelerated manner and compressed air is supplied to combustion chambers of the engine and is there effective to increase braking power.Type: GrantFiled: December 19, 2006Date of Patent: April 28, 2009Assignee: MAN Nutzfahrzeuge Österreich AGInventors: Franz Rammer, Franz Leitenmayr, Gottfried Raab
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Patent number: 7509805Abstract: An internal combustion engine has a plurality of cylinders, and each cylinder has at least one first and one second exhaust port with associated respective first and second exhaust valves. At least one first and one second exhaust manifold are flow-connected to the respective first and second exhaust ports. A turbo unit for supercharging the charge air delivered to the cylinders comprises at least one first and one second exhaust gas turbine respectively flow connected to the first and the second exhaust manifolds. An exhaust gas chamber flow-connects the first and the second exhaust manifolds upstream of the exhaust gas turbines. The first and second exhaust valves can be deactivated/activated during operation. A throttle valve in the exhaust gas chamber may assume a closed position in order to separate the first and the second exhaust manifolds. A method of operating includes opening and closing different valves at different engine speeds.Type: GrantFiled: October 6, 2005Date of Patent: March 31, 2009Assignee: SAAB Automobile ABInventor: Erik Karlsson
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Publication number: 20090064678Abstract: A multiple-turbocharger system for an internal combustion engine includes a first turbocharger comprising a first compressor driven by a first turbine, the first turbine operable to be driven by exhaust gas from the engine; a second turbocharger comprising a second compressor driven by a second turbine, the second turbine operable to be driven by exhaust gas from the engine; a first conduit arranged for supplying exhaust gas from the engine to the first turbine, and a second conduit arranged for supplying exhaust gas from the engine to the second turbine; and a valve coupled with the second conduit and switchable between an open condition allowing exhaust gas flow from the second conduit to the second turbine, and a closed condition substantially preventing exhaust gas flow from the second conduit to the second turbine but allowing a leakage flow to the second turbine sufficient to keep the second turbine rotating.Type: ApplicationFiled: September 10, 2007Publication date: March 12, 2009Inventors: Jean-Luc Perrin, Philippe Renaud, Yannick Prebost
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Publication number: 20090064677Abstract: As one example, a method of operating an engine system including a first air intake passage branch including a first compression device and a second air intake passage branch including a second compression device, wherein each of the first branch and the second branch are fluidly coupled to at least a combustion chamber the engine via a common intake passage, a first sensor arranged along the first branch and at least a second sensor arranged along the common intake passage, wherein the first sensor is a mass airflow sensor and wherein the second branch does not include a mass airflow sensor. The method comprises increasing the mass airflow through the first branch relative to the mass airflow through the second branch when an amount of decrease in the mass airflow through the first branch is more than half an amount of a corresponding decrease in the combined mass airflow.Type: ApplicationFiled: September 6, 2007Publication date: March 12, 2009Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventor: David George Farmer
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Patent number: 7490462Abstract: An exhaust recirculation system includes a power source including at least one cylinder outputting exhaust gas and a particulate reducing device fluidly connected to at least one exhaust duct of the power source. The particulate reducing device is configured to reduce an amount of particulates in the exhaust gas. The exhaust recirculation system also includes a recirculation compressor configured to receive and compress at least a portion of the exhaust gas. An intake duct of the at least one cylinder of the power source is fluidly connected to the recirculation compressor to receive the compressed reduced-particulate exhaust gas.Type: GrantFiled: February 21, 2006Date of Patent: February 17, 2009Assignee: Caterpillar Inc.Inventors: Stephan Donald Roozenboom, Andrew John Kieser
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Publication number: 20090038309Abstract: A supercharging device, especially for supercharging internal combustion engines, having a first supercharging device and an additional supercharging device, which each have one compressor part and each have one turbine part, and a supercharging pressure prevails in an intake manifold on the intake side of the internal combustion engine, and an exhaust gas counterpressure prevails in an exhaust gas manifold, on the outlet side of the internal combustion engine. A switching element is provided, in the intake tract of the internal combustion engine, between the compressor part of the first supercharging device and the compressor part of the additional supercharging device, using which, switching over is performed from the series connection of the compressor parts to the parallel connection of the compressor parts and vice versa.Type: ApplicationFiled: July 29, 2008Publication date: February 12, 2009Inventors: Oliver Cocca, Guenther Vogt, Andre Wittmer, Peter Albrecht, Andreas Huber, Uwe Hammer, Bodo Becker
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Publication number: 20090031722Abstract: An engine equipped with a multistage exhaust turbocharger easily mountable in a narrow engine room of a vehicle is provided by simplifying in construction and reducing in bulk of the multistage exhaust turbocharger. The multistage exhaust turbocharger has a high-pressure stage turbocharger and a low-pressure stage turbocharger. A high-pressure compressor cover of the high-pressure stage turbocharger is composed such that it has a compressor inlet passage, a bypass inlet passage, a switching aperture between both 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: ApplicationFiled: August 3, 2007Publication date: February 5, 2009Inventors: Byeongil An, Takashi Shiraishi, Toru Kikuchi, Mamoru Wakita
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Publication number: 20090013945Abstract: 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: ApplicationFiled: July 13, 2007Publication date: January 15, 2009Inventors: Julia Helen Buckland, Mrdjan J. Jankovic
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Publication number: 20090007565Abstract: 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: ApplicationFiled: November 21, 2007Publication date: January 8, 2009Inventors: Sung Il Yoon, Hyoung-Hyoun Kim
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Publication number: 20090007563Abstract: A diesel engine comprises one or more cylinders (2), an inlet duct (4), an exhaust duct (6), a first pressure boosting device (10) of variable output type situated in the inlet duct (4) and a second pressure boosting device (14) of variable output type situated in the inlet duct downstream of the first pressure boosting device (10). A selectively operable bypass duct (11) is connected to the inlet duct (4) at positions upstream and downstream of the second pressure boosting device (14). A selectively variable throttle valve (15) is situated in the inlet duct (4) at a position between the second pressure boosting device (14) and the upstream connection of the bypass duct (11) with the inlet duct (4). An exhaust gas recirculation (EGR) duct (20) is connected to the exhaust duct (6) and to the inlet duct (4) at a position between the throttle valve (15) and the second pressure boosting device (14).Type: ApplicationFiled: January 19, 2007Publication date: January 8, 2009Inventors: Brian Gorman Cooper, Richard Charles Elliot Cornwell
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Patent number: 7461508Abstract: A method and a device are provided for regulating the charge pressure of an internal combustion engine having at least two exhaust gas turbochargers that set a target charge pressure rapidly and without overshooting. A first actuating element is provided with which the charge pressure of a first exhaust gas turbocharger is set, and a second actuating element is provided with which the charge pressure of a second exhaust gas turbocharger is set. Dependent on the exhaust gas back pressure prevailing in the exhaust gas channel at the output of the internal combustion engine, a first controlled variable is determined for the first actuating element, and a second controlled variable is determined for the second actuating element.Type: GrantFiled: November 16, 2005Date of Patent: December 9, 2008Assignee: Robert Bosch GmbHInventors: Ulrich Rosin, Thomas Bleile, Michael Scheidt
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Publication number: 20080295515Abstract: The invention is based on an arrangement of supercharging units (1, 5, 6, 7), which arrangement is to be attached in the construction space of a motor vehicle, for supercharging an internal combustion engine with a fluid (23) comprising charge air and/or exhaust gas, wherein the supercharging units (1, 5, 6, 7) comprise at least one heat exchanger (5, 6, 7) and at least one compressor (1). According to the concept of the invention, the supercharging units (1, 5, 6, 7) are arranged combined in a module (10A, 10B) and, in order for the same to be kept together in the module (10A, 10B), the supercharging units (1, 5, 6, 7) are connected at any rate partially to one another in a fluid-conducting manner, and at least one of the supercharging units (1, 5, 6, 7) is held on a holding structure. This enables the supercharging units to be handled flexibly, simply and nevertheless in a manner saving on construction space and outlay on connection. The invention also leads to a production method.Type: ApplicationFiled: May 28, 2008Publication date: December 4, 2008Inventor: Jurgen WEGNER
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Patent number: 7451597Abstract: An engine includes an electric supercharger as a first supercharger, a turbocharger as a second supercharger, a secondary air supply passage, a secondary air valve and a catalyst. The electric supercharger is provided in an intake passage which is in communication with a combustion chamber, and supercharges intake air into the combustion chamber. The turbocharger is provided in the intake passage in series with respect to the electric supercharger, and supercharges intake air to the combustion chamber. The secondary air supply passage and the secondary air valve supply air compressed by the electric supercharger to a discharge passage which is in communication with the combustion chamber. The catalyst is provided in the discharge passage to purify exhaust gas.Type: GrantFiled: September 28, 2005Date of Patent: November 18, 2008Assignee: Mitsubishi Jidosha Kogyo Kabushiki KaishaInventors: Ichiyo Kojima, Toshio Inui, Hideo Nakai, Tetsuo Kataoka
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Patent number: 7444815Abstract: An internal combustion engine includes a first set of combustion cylinders and a second set of combustion cylinders. A first exhaust manifold is associated with the first set of combustion cylinders, and a second exhaust manifold is associated with the second set of combustion cylinders. A turbocharger includes a turbine which is fluidly coupled exclusively with the first exhaust manifold. An EGR system fluidly interconnects the second exhaust manifold and an intake manifold.Type: GrantFiled: December 9, 2005Date of Patent: November 4, 2008Assignee: Deere & CompanyInventors: Kirby Jon Baumgard, Richard Edward Winsor
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Patent number: 7426831Abstract: A regulated two-stage turbocharger system is described, including high-pressure and low-pressure turbocharger units. The low-pressure turbocharger unit includes a twin volute turbine portion. The turbocharger system includes a valve system having valve members that are independently controllable so as to selectively control an exhaust gas flow into the twin volutes of the turbine portion of the low-pressure turbocharger unit. By-pass valve systems are also provided for the twin volute turbine portion of the low-pressure turbocharger unit and the compressor portion of the high-pressure turbocharger unit.Type: GrantFiled: October 6, 2005Date of Patent: September 23, 2008Assignee: BorgWarner Inc.Inventor: Thomas A. Grissom
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Patent number: 7426830Abstract: The invention relates to a supercharged internal combustion engine having at least two cylinder groups of at least one cylinder each, both cylinder groups being equipped with an exhaust pipe, and the two exhaust pipes being in communication with one another, and having two exhaust gas turbochargers, the turbines of which are connected in parallel, with their compressors connected in series, and having an exhaust gas recirculation line which upstream of one of the two turbines branches off from the exhaust pipe assigned to this turbine and opens out into the common intake line. An advantage of this invention is that it provides a supercharged internal combustion engine which overcomes the drawbacks which are known from the prior art and can be used to realize high exhaust gas recirculation rates and high boost pressures, in particular simultaneously, in all the load ranges of the internal combustion engine.Type: GrantFiled: September 22, 2005Date of Patent: September 23, 2008Assignee: Ford Global Technologies, LLCInventors: Norbert Andreas Schorn, Helmut Matthias Kindl, Uwe Spaeder, Rob Stalman
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Publication number: 20080223039Abstract: In an internal combustion engine having two exhaust gas turbochargers which are connected in series and a bypass line which bypasses the exhaust gas turbine close to the engine and extends to a collecting space of the turbine remote from the engine, and a blow-off valve is integrated into the turbine housing of the remote exhaust gas turbine for controlling a communication path between the collecting space and the turbine wheel, and includes a control sleeve supported axially movably between a closed position in which the communication path is blocked and a fully open position in which a flow path by-passing the turbine wheel of the turbine remote from the engine is provided.Type: ApplicationFiled: March 28, 2008Publication date: September 18, 2008Inventors: Siegfried Sumser, Michael Stiller, Peter Fiedersbacher
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Publication number: 20080196409Abstract: An exhaust system for an engine having a first set and a second set of cylinders and an emission control device comprising of a first turbocharger coupled to the first set of cylinder(s); a second turbocharger coupled to the second set of cylinder(s); a crossover pipe coupled between and upstream of the first and second turbochargers; a mechanism for adjusting exhaust flow through the crossover pipe; a lower heat loss path coupled between the first turbocharger and the emission control device; and a higher heat loss path coupled between the second turbocharger and the emission control device.Type: ApplicationFiled: February 20, 2007Publication date: August 21, 2008Inventors: Michael Goebelbecker, Kevin Murphy
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Publication number: 20080178593Abstract: A turbocharger system for an internal combustion engine includes at least one compressor wheel. The at least one compressor wheel of a single stage or multiple stage turbocharger system is formed, such as by pressure casting, from at least one of an aluminum metal matrix composite and an aluminum alloy containing up to 5 weight percent scandium.Type: ApplicationFiled: January 29, 2008Publication date: July 31, 2008Inventors: Nan Yang, Jeff A. Jensen