Patents by Inventor Siegfried Sumser

Siegfried Sumser has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Variable exhaust-gas turbocharger with an auxiliary drive for an internal combustion engine
    Patent number: 6957535
    Abstract: In a variable exhaust gas turbocharger for an internal combustion engine including an exhaust gas turbocharger to which exhaust gas is supplied from the engine to provide a torque for driving the turbocharger, an additional device is provided which includes an electrical or mechanical drive for supplying an additional torque to the exhaust gas turbocharger in order to maintain the exhaust gas turbocharger at a certain speed at which it is capable of generating a desired inlet air pressure for the charge air supplied to the internal combustion engine.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: October 25, 2005
    Assignee: DaimlerChrysler AG
    Inventors: Siegfried Sumser, Peter Fledersbacher, Helmut Finger, Manfred Stute
  • Internal combustion engine comprising an exhaust gas turbocharger
    Publication number: 20050229597
    Abstract: In an internal combustion engine having an exhaust gas turbocharger with an exhaust gas inlet structure including two exhaust gas flow passages in communication with two exhaust ducts via a rotary cylinder valve for controlling the exhaust gas flow, the valve includes two inlet openings for directing the flow to the inlet flow passages of the turbine and a recess which when disposed over the exhaust gas flow passages permits exhaust gas to flow from one to the other of the exhaust gas ducts, the interior of the valve being in communication with a bypass line for bypassing the turbine.
    Type: Application
    Filed: June 11, 2005
    Publication date: October 20, 2005
    Inventors: Helmut Finger, Erwin Schmidt, Siegfried Sumser
  • Internal combustion engine comprising a compressor in the induction tract
    Publication number: 20050188693
    Abstract: In an internal combustion engine which includes in the intake section a compressor with an impeller that is mounted rotatably in a compressor intake passage, the compressor includes an additional passage which opens out into the compressor intake passage and through which a mass flow of exhaust gas can be transferred from the exhaust section into the intake section via an exhaust-gas recirculation device, the exhaust gas recirculation line of the exhaust-gas recirculation system of the engine being connected to the additional passage extending directly to the compressor.
    Type: Application
    Filed: March 22, 2005
    Publication date: September 1, 2005
    Inventors: Wolfram Schmid, Siegfried Sumser
  • Internal combustion engine having an exhaust-gas turbocharger
    Publication number: 20050144945
    Abstract: In an internal combustion engine having an exhaust system with a turbocharger including an exhaust gas turbine disposed in the engine exhaust duct, a bypass line connected to the exhaust duct upstream of the turbine including a valve for diverting exhaust gas flow and bypassing the turbine, the valve includes a valve body having first and second exhaust gas flow control openings of different flow cross-sections and being adjustable between a first position in which the first flow control openings is in communication with the exhaust gas duct, a second position in which the second flow control opening is in communication with the exhaust gas duct and a blocking position in which exhaust gas bypass flow through the valve is blocked.
    Type: Application
    Filed: January 29, 2004
    Publication date: July 7, 2005
    Inventors: Wolfram Schmid, Alfred Kuspert, Rolf Hutmacher, Siegfried Sumser
  • Variable exhaust-gas turbocharger with an auxiliary drive for an internal combustion engine
    Publication number: 20050091978
    Abstract: In a variable exhaust gas turbocharger for an internal combustion engine including an exhaust gas turbocharger to which exhaust gas is supplied from the engine to provide a torque for driving the turbocharger, an additional device is provided which includes an electrical or mechanical drive for supplying an additional torque to the exhaust gas turbocharger in order to maintain the exhaust gas turbocharger at a certain speed at which it is capable of generating a desired inlet air pressure for the charge air supplied to the internal combustion engine.
    Type: Application
    Filed: November 10, 2004
    Publication date: May 5, 2005
    Applicant: DaimlerChrysler AG
    Inventors: Siegfried Sumser, Peter Fledersbacher, Helmut Finger, Manfred Stute
  • Exhaust-gas turbocharger for an internal combustion engine
    Publication number: 20050056015
    Abstract: An exhaust-gas turbocharger in an internal combustion engine having a compressor in the induction tract and an exhaust-gas turbine in the exhaust-gas line wherein the exhaust-gas turbine has at least two spiral ducts which in each case open into a radial flow inlet passage. Arranged in the radial flow inlet passage is a guide cascade ring which is disposed between two axially delimiting walls. One of the walls is designed to be axially displaceable and adapted to accommodate the vanes of the guide cascade ring. The wall is displaceable axially outward to such an extent that the vanes of the radial guide cascade ring are no longer in contact with the wall and there is a direct, unobstructed flow path to an outflow duct in the exhaust-gas turbine.
    Type: Application
    Filed: September 21, 2004
    Publication date: March 17, 2005
    Inventors: Peter Fledersbacher, Siegfried Sumser, Helmut Finger, Wolfgang Erdmann
  • Variable exhaust gas turbocharger
    Publication number: 20050056016
    Abstract: In a variable exhaust gas turbocharger for an internal combustion engine having an exhaust gas turbine and a compressor with a variable vane structure wherein the exhaust gas turbocharger comprises a housing and a compressor wheel which is connected to an exhaust gas turbine wheel via a shaft, the compressor has a radial inflow flow passage in which a variable vane structure or throttle device is arranged upstream of the compressor wheel and another vane structure is arranged in the radial flow passage downstream of the compressor wheel in the direction of flow.
    Type: Application
    Filed: September 24, 2004
    Publication date: March 17, 2005
    Inventors: Siegfried Sumser, Peter Fledersbacher, Wolfgang Erdmann, Manfred Stute
  • Exhaust gas turbocharger for an internal combustion engine
    Patent number: 6854272
    Abstract: An exhaust gas turbocharger for an internal combustion engine, which has an exhaust gas turbine in the exhaust system and a compressor in the induction system, comprises a variable turbine geometry, associated with the turbine, for adjustably setting a radial inlet cross section for the flow to the turbine rotor. The variable turbine geometry is configured as a guide cascade ring, which has guide vanes distributed over the periphery and encompasses the turbine rotor. The minimum distance between two adjacent guide vanes obeys a specified relationship with respect to the diameter of the turbine rotor and the number of guide vanes of the guide cascade ring. In addition, a flow edge is provided on the radially inner surface of each guide vane.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: February 15, 2005
    Assignee: DaimlerChrysler AG
    Inventors: Helmut Finger, Lothar Lenke, Erwin Schmidt, Siegfried Sumser
  • Turbine for an exhaust gas turbocharger
    Patent number: 6834500
    Abstract: In a turbine for an exhaust gas turbocharger including a turbine wheel with a number of turbine wheel blades supported in a housing, which defines a first radial inlet flow channel and which includes in the radial inlet flow channel a variable guide vane structure for guiding exhaust gas radially onto the turbine wheel, and a second, semi-axial, flow channel for guiding exhaust gas semi-axially to the turbine wheel, the turbine wheel blades are arranged and sized so as to define between circumferentially adjacent blades, a flow passage with a flow cross-section which has a minimum at its inlet end.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: December 28, 2004
    Inventors: Siegfried Sumser, Erwin Schmidt, Stephan Schenkel
  • Exhaust-gas turbocharger
    Publication number: 20040255582
    Abstract: In an exhaust gas turbocharger including a compressor wheel, the compressor wheel is cooled by at least one nozzle which is arranged in close axial proximity to the axis of rotation of the compressor wheel for spraying the backside of the compressor wheel near the center thereof with coolant whereby the coolant, utilizing the centrifugal forces of the rotating compressor wheel, is completely distributed over the entire wheel back surfaces.
    Type: Application
    Filed: June 4, 2004
    Publication date: December 23, 2004
    Inventors: Siegfried Sumser, Helmut Finger, Eduard Heinz, Lionel Le Clech, Wolfram Schmid
  • Exhaust-gas turbocharger for an internal combustion engine, and method for operating a turbocharged internal combustion engine
    Patent number: 6813887
    Abstract: An exhaust-gas turbocharger for an internal combustion engine includes an exhaust-gas turbine in the exhaust section and a compressor in the intake tract. The compressor includes a compressor impeller in an inflow passage in the compressor housing. Furthermore, there is an auxiliary-air feed device, which is assigned to the compressor region and has an auxiliary-air passage, in the compressor housing for supplying auxiliary air, which can be introduced via an injection opening in the wall of the inflow passage of the compressor into the flow-facing region of the compressor impeller.
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: November 9, 2004
    Assignee: DaimlerChrysler AG
    Inventors: Siegfried Sumser, Aloysius Schunk, Peter Fledersbacher
  • Fuel cell air supply
    Publication number: 20040151964
    Abstract: A fastening device for a convertible top according to the invention comprises a front bow; a front window frame; a bracket, which is arranged on one of the group of the front bow and the front window frame; a first catch element, which is assigned to the respectively other component of the group of the front bow and the front window frame, said first catch element being secured in a movable manner and being connectable to said bracket, it being possible for the first catch element to be pivoted about a first axis; and at least one second catch element, which can be connected to said bracket; wherein the second catch element can be pivoted about a second axis, said second axis being spaced apart from said first axis.
    Type: Application
    Filed: April 1, 2004
    Publication date: August 5, 2004
    Inventors: Helmut Finger, Peter Fledersbacher, Gerhard Konrad, Manfred Stute, Paul Loeffler, Siegfried Sumser
  • Exhaust gas turbocharger for an internal combustion engine
    Patent number: 6739134
    Abstract: An exhaust-gas turbocharger for an internal combustion engine has a turbine in the exhaust-gas tract and a compressor, driven by the turbine, in the intake tract, the turbine having a flow channel with a radial flow-inlet cross-section and a semi-axial flow-inlet cross-section, and a flow ring being provided which limits the two flow-inlet cross-sections. The turbine is furnished with variable turbine geometry for the changeable adjustment of the flow-inlet cross-section. To improve efficiency, the position of the flow ring in the housing of the exhaust-gas turbocharger is variably adjustable.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: May 25, 2004
    Assignees: DaimlerChrysler AG, 3-K Warner Turbosystems GmbH
    Inventors: Peter Fledersbacher, Siegfried Sumser, Paul Loeffler, Helmut Finger, Hans-Josef Hemer, Ralf Koch
  • Compressor in a turbocharger
    Patent number: 6733236
    Abstract: A compressor in a turbocharger has a compressor impeller in an inflow passage and an outflow region downstream of the compressor-impeller outlet edge. The outflow region is assigned a connecting passage, a stabilizing chamber and an outflow passage, the connecting passage being arranged with a lateral offset with respect to a longitudinal center axis of the stabilizing chamber.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: May 11, 2004
    Assignee: DaimlerChrysler AG
    Inventors: Siegfried Sumser, Peter Fledersbacher, Helmut Finger, Helmut Daudel, Gebhard Bopp
  • Compressor, in particular for an internal combustion engine
    Patent number: 6726441
    Abstract: In an air compressor, particularly for an internal combustion engine, which has a compressor housing with a flow duct structure and a recirculation arrangement including a bypass structure for recirculation some of the air entering the compressor wheel, a recirculating ring is arranged in the bypass flow structure around the compressor wheel and the ring has a plurality of flow passages distributed uniformly around its circumference with inflow orifices at the radial inner end in communication with the compressor flow duct and outflow orifice at the radial outer end in communication with a by-pass flow space.
    Type: Grant
    Filed: February 6, 2002
    Date of Patent: April 27, 2004
    Assignee: Daimler Chrysler AG
    Inventors: Siegfried Sumser, Peter Fledersbacher, Wolfgang Erdmann, Helmut Finger, Friedrich Wirbeleit
  • Turbine for an exhaust gas turbocharger
    Publication number: 20040062638
    Abstract: In a turbine for an exhaust gas turbocharger including a turbine wheel with a number of turbine wheel blades supported in a housing, which defines a first radial inlet flow channel and which includes in the radial inlet flow channel a variable guide vane structure for guiding exhaust gas radially onto the turbine wheel, and a second, semi-axial, flow channel for guiding exhaust gas semi-axially to the turbine wheel, the turbine wheel blades are arranged and sized so as to define between circumferentially adjacent blades, a flow passage with a flow cross-section which has a minimum at its inlet end.
    Type: Application
    Filed: June 20, 2003
    Publication date: April 1, 2004
    Inventors: Siegfried Sumser, Erwin Schmidt, Stephan Schenkel
  • Internal combustion engine with an exhaust turbocharger and an exhaust-gas recirculation device
    Patent number: 6694735
    Abstract: In an internal combustion engine including an exhaust turbocharger and an exhaust-gas recirculation device, with an exhaust turbine and a compressor, the exhaust turbine has a plurality of inlet flow passages to which exhaust gas can be supplied via separate exhaust lines connected to some of the cylinders of the internal combustion engine. In total, three flow passages are provided in the exhaust turbine, of which two communicate with the exhaust-gas recirculation device, and one of these flow passages includes an adjustable throttling member for regulating the mass flow of exhaust gas to be recirculated.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: February 24, 2004
    Assignee: DaimlerChrysler AG
    Inventors: Siegfried Sumser, Helmut Finger
  • Internal combustion engine with an exhaust turbocharger and an exhaust-gas recirculation device
    Patent number: 6672061
    Abstract: An internal combustion engine with an exhaust turbocharger and an exhaust-gas recirculation device comprises a turbine, assigned to the exhaust turbocharger, in the exhaust section and a compressor in the intake duct, the turbine having at least two flow passages, via which exhaust gas can be fed to the turbine rotor. For the purpose of dimensioning the two flow passages, an asymmetry factor is determined as a function of the displacement of the internal combustion engine.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: January 6, 2004
    Assignee: DaimlerChrysler AG
    Inventors: Wolfram Schmid, Siegfried Sumser
  • Device and method for supplying air to a fuel cell
    Publication number: 20030232231
    Abstract: A device for supplying air to a fuel cell includes a compression machine connected at the intake air side of the fuel cell and an expansion machine connected at the exhaust air side of the fuel cell. The expansion machine is disposed on a common shaft with the compression machine. A motor-driven compression machine is connected downstream from the expansion machine on the exhaust air side.
    Type: Application
    Filed: April 17, 2003
    Publication date: December 18, 2003
    Applicant: DaimlerChrysler AG
    Inventors: Manfred Stute, Siegfried Sumser
  • Exhaust gas turbocharger, supercharged internal combustion engine and method of operation
    Publication number: 20030230085
    Abstract: In an internal combustion engine which is provided with exhaust gas re-circulation and an exhaust gas turbocharger with an exhaust gas turbine having variable turbine geometry, and wherein the exhaust gas turbine includes two separate inflow ducts, which are separated in a pressure-tight fashion, one inflow duct communicates with an exhaust gas duct from which a re-circulation line of the exhaust gas re-circulation system extends to an intake duct.
    Type: Application
    Filed: March 27, 2003
    Publication date: December 18, 2003
    Inventors: Siegfried Sumser, Peter Fledersbacher, Helmut Daudel, Helmut Finger, Friedrich Wirbeleit, Werner Bender