Patents by Inventor Ulrich Gobert

Ulrich Gobert 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).

  • Patent number: 8601796
    Abstract: A selective catalytic reduction system for reducing nitric oxides emission levels from a compression ignition engine includes a first reductant injector located upstream a first catalyst including a selective catalytic reduction coating. A second reductant injector is located downstream the first catalyst; and a second catalyst is placed downstream the second reductant injector and includes a selective catalytic reduction coating.
    Type: Grant
    Filed: June 13, 2006
    Date of Patent: December 10, 2013
    Assignee: Volvo Lastvagnar AB
    Inventors: Andreas Hinz, Jonas Jansson, Hans Bernler, Ulrich Gobert
  • 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
  • Publication number: 20100064662
    Abstract: A selective catalytic reduction system for reducing nitric oxides emission levels from a compression ignition engine includes a first reductant injector located upstream a first catalyst including a selective catalytic reduction coating. A second reductant injector is located downstream the first catalyst; and a second catalyst is placed downstream the second reductant injector and includes a selective catalytic reduction coating.
    Type: Application
    Filed: June 13, 2006
    Publication date: March 18, 2010
    Applicant: Volvo Lastvagnar AB
    Inventors: Andreas Hinz, Jonas Jansson, Hans Bernler, Ulrich Gobert
  • Patent number: 7395668
    Abstract: A piston engine and a method for controlling a diesel-type piston engine including at least one combustion chamber formed by a cylinder, a movably arranged piston in each cylinder, which piston is connected to a crankshaft, an injection device designed to inject fuel directly into the combustion chamber and turbo system comprising a low pressure turbo and a high pressure turbo. The thermal efficiency of the internal combustion is increased while requirements relating to nitrogen oxide and soot particle emissions continue to be maintained.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: July 8, 2008
    Assignee: Volvo Lastvagnar AB
    Inventors: Ulrich Gobert, Daniel Grunditz, Sebastian Krausche
  • Patent number: 7287379
    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 one inlet line for supplying air to the combustion chamber. A high-pressure turbine interacts with a high-pressure compressor forming a high-pressure turbo unit with a common rotation axis. A low-pressure turbine interacts with a low-pressure compressor forming a low-pressure turbo unit with a common rotation axis. The high-pressure turbo unit and the low-pressure turbo unit are serially placed with the rotation axes essentially concentric and with the high-pressure turbine and the low-pressure turbine placed adjacent to each other and coupled together by an intermediate piece configured as a flow duct. The low-pressure turbo unit (22) is attached to one part of the internal combustion engine, while the high-pressure turbo unit is attached to another part of the engine.
    Type: Grant
    Filed: November 15, 2005
    Date of Patent: October 30, 2007
    Assignee: Volvo Lastvagnar AB
    Inventors: Ulrich Gobert, Lars Sundin, Magnus Ising, Daniel Grunditz, Per Andersson, Kent Giselmo, Sebastian Krausche
  • Patent number: 7140346
    Abstract: A piston engine and a method for controlling a diesel-type piston engine including at least one combustion chamber formed by a cylinder. A movably arranged piston is provided in each cylinder is connected to a crankshaft. An injection device is provided that is configured to inject fuel directly into the combustion chamber. Thermal efficiency of the internal combustion engine can be increased while at the same time requirements relating to nitrogen oxide and soot particle emissions can also be maintained.
    Type: Grant
    Filed: November 15, 2005
    Date of Patent: November 28, 2006
    Assignee: Volvo Lastvagnar AB
    Inventors: Ulrich Gobert, Daniel Grunditz
  • Publication number: 20060123786
    Abstract: A turbocharger system for an internal combustion engine (10) having at least one exhaust line (15, 16) for evacuating exhaust gases from the combustion chamber (11) of the engine and at least one inlet line (12) for supplying air to the combustion chamber. A high-pressure turbine (17) interacts with a high-pressure compressor (19) and hereupon forms a high-pressure turbo unit (18) with a common rotation axis. A low-pressure turbine (21) interacts with a low-pressure compressor (23) and hereupon forms a low-pressure turbo unit (22) with a common rotation axis, for extracting energy from the exhaust flow of the engine and pressurizing the inlet air of the engine. The low-pressure turbine (21) is of the axial type.
    Type: Application
    Filed: November 15, 2005
    Publication date: June 15, 2006
    Applicant: VOLVO LASTVAGNAR AB
    Inventors: Ulrich Gobert, Lars Sundin, Magnus Ising, Daniel Grunditz, Per Andersson, Kent Giselmo, Sebastian Krausche
  • Publication number: 20060123787
    Abstract: A turbocharger system for an internal combustion engine having at least one exhaust line (15, 16) 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 (17) interacts with a high-pressure compressor (19) and a low-pressure turbine (21) interacts with a low-pressure compressor (23) in order 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: Application
    Filed: November 15, 2005
    Publication date: June 15, 2006
    Applicant: VOLVO LASTVAGNAR AB
    Inventors: Ulrich Gobert, Lars Sundin, Magnus Ising, Daniel Grunditz, Per Andersson, Kent Giselmo, Sebastian Krausche
  • Publication number: 20060123788
    Abstract: A piston engine and a method for controlling a diesel-type piston engine including at least one combustion chamber formed by a cylinder, a movably arranged piston in each cylinder, which piston is connected to a crankshaft, an injection device designed to inject fuel directly into the combustion chamber and turbo system comprising a low pressure turbo and a high pressure turbo. The thermal efficiency of the internal combustion is increased while requirements relating to nitrogen oxide and soot particle emissions continue to be maintained.
    Type: Application
    Filed: February 23, 2006
    Publication date: June 15, 2006
    Applicant: VOLVO LASTVAGNAR AB
    Inventors: Ulrich GOBERT, Daniel Grunditz, Sebastian Krausche
  • Publication number: 20060123781
    Abstract: A piston engine and a method for controlling a diesel-type piston engine including at least one combustion chamber formed by a cylinder. A movably arranged piston is provided in each cylinder is connected to a crankshaft. An injection device is provided that is configured to inject fuel directly into the combustion chamber. Thermal efficiency of the internal combustion engine can be increased while at the same time requirements relating to nitrogen oxide and soot particle emissions can also be maintained.
    Type: Application
    Filed: November 15, 2005
    Publication date: June 15, 2006
    Applicant: VOLVO LASTVAGNAR AB
    Inventors: Ulrich GOBERT, Daniel GRUNDITZ
  • Patent number: 5906480
    Abstract: Device for charging a truck pneumatic system. The truck has a mechanical compressor (8) for supercharging combustion air to its internal combustion engine (1). The compressor is actuated in the lower half of the engine rpm range. Charging occurs when operating conditions so permit, with air from the charge air system, preferably from the pressure side of the mechanical compressor (8).
    Type: Grant
    Filed: September 12, 1996
    Date of Patent: May 25, 1999
    Assignee: AB Volvo
    Inventors: Mats Sabelstrom, Ulrich Gobert
  • Patent number: 5905233
    Abstract: A noise suppressor for a displacement-type compressor, in particular in an engine installation with such a compressor connected in series with a turbocharger. The noise suppressor comprises a nozzle (31). The inlet of the nozzle is connected to the outlet of the compressor. The compressor's outlet merges into an expansion chamber (32) with a largest diameter ("d") greater than the largest inlet diameter ("e") of the nozzle. The chamber has an outlet formed by a second nozzle (33) identical to the first nozzle.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: May 18, 1999
    Assignee: AB Volvo
    Inventor: Ulrich Gobert
  • Patent number: 5615554
    Abstract: A supercharged diesel engine (1) with a mechanical supercharger (5) and a turbocharger (4) connected in series so that the pressure side of the supercharger is connected to the suction side of the turbocharger. The supercharger and the turbocharger each have an intake conduit (20, 25) which exits a common expansion chamber (22). The conduit (25) to the suction side of the mechanical supercharger (5) contains a nozzle (28), whilst the conduit (26) from its pressure side contains a double nozzle with an intermediate expansion chamber (30) which, together with the expansion chamber (22) and the first-mentioned nozzle, serve to suppress noise from the supercharger.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: April 1, 1997
    Assignee: AB Volvo
    Inventor: Ulrich Gobert
  • Patent number: 5425239
    Abstract: A supercharged internal combustion engine with an exhaust driven turbo compressor (4,5) and a mechanically driven compressor (11), the pressure side of which is connected to the suction side of the turbo compressor. A conduit (18) for recirculation of exhaust opens into an ejector device (23,24) in a bypass conduit (17a, 17b), which branches downstream of the turbo compressor from an intake conduit (15) provided with a damper (16).
    Type: Grant
    Filed: March 28, 1994
    Date of Patent: June 20, 1995
    Assignee: AB Volvo
    Inventor: Ulrich Gobert
  • Patent number: 5146890
    Abstract: The invention relates to a method and an arrangement for engine braking a four-stroke internal combustion engine. The engine has for each cylinder (2) at least one inlet valve (7) and at least one exhaust valve (9) for controlling communication between a combustion chamber (5) in the cylinder (2) and an inlet system (8) and an exhaust system (10) respectively. In accordance with the invention, the arrangement also establishes communication between the combustion chamber (5) and the exhaust system (10) in conjunction with the exhaust stroke and also when the piston (3) is located in the proximity of its bottom-dead-center position after the inlet stroke and during the latter part of the compression stroke and during at least part of the expansion stroke.
    Type: Grant
    Filed: September 13, 1991
    Date of Patent: September 15, 1992
    Assignee: AB Volvo
    Inventors: Ulrich Gobert, Ola Danielsson