Patents by Inventor Lars Sundin

Lars Sundin 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: 9957969
    Abstract: A device for controlling a gas flow through a passage includes a plurality of pivotable gas flow control vanes. The pivot axes of a first and a second adjacent vane are spaced so that a trailing edge of the first vane overlaps a leading edge of the second vane when the first and second adjacent vanes are positioned in a first mutual end state for substantially restricting the gas flow through the passage. The second vane includes a recess with such a shape that the trailing edge of the first vane is at least partly received in the recess when the first and second adjacent vanes are positioned in the first mutual end state.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: May 1, 2018
    Assignee: Volvo Lastvagnar AB
    Inventors: Sebastian Krausche, Lars Sundin
  • Patent number: 9932848
    Abstract: A power turbine unit includes a turbine housing, an exhaust duct, a turbine wheel with blades positioned in the exhaust duct, a shaft rigidly connected to the turbine wheel and rotatably supported in the housing, and an oil sealing system. The oil sealing system includes a sealing arrangement positioned in the vicinity of the turbine wheel for preventing oil from escaping from the turbine housing along the shaft to the exhaust duct. The oil sealing system further includes a buffer gas duct that is arranged to supply exhaust gas from the exhaust duct to the sealing arrangement for pressurizing the sealing arrangement.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: April 3, 2018
    Assignee: Volvo Truck Corporation
    Inventors: Kent Giselmo, Magnus Ekstrand, Lars Sundin, Sebastian Krausche
  • Publication number: 20150292345
    Abstract: A power turbine unit includes a turbine housing, an exhaust duct, a turbine wheel with blades positioned in the exhaust duct, a shaft rigidly connected to the turbine wheel and rotatably supported in the housing, and an oil sealing system. The oil sealing system includes a sealing arrangement positioned in the vicinity of the turbine wheel for preventing oil from escaping from the turbine housing along the shaft to the exhaust duct. The oil sealing system further includes a buffer gas duct that is arranged to supply exhaust gas from the exhaust duct to the sealing arrangement for pressurizing the sealing arrangement.
    Type: Application
    Filed: November 21, 2012
    Publication date: October 15, 2015
    Applicant: VOLVO TRUCK CORPORATION
    Inventors: Kent Giselmo, Magnus Ekstrand, Lars Sundin, Sebastian Krausche
  • Publication number: 20150167685
    Abstract: A device for controlling a gas flow through a passage includes a plurality of pivotable gas flow control vanes. The pivot axes of a first and a second adjacent vane are spaced so that a trailing edge of the first vane overlaps a leading edge of the second vane when the first and second adjacent vanes are positioned in a first mutual end state for substantially restricting the gas flow through the passage. The second vane includes a recess with such a shape that the trailing edge of the first vane is at least partly received in the recess when the first and second adjacent vanes are positioned in the first mutual end state.
    Type: Application
    Filed: June 19, 2012
    Publication date: June 18, 2015
    Applicant: VOLVO LASTVAGNAR AB
    Inventors: Sebastian Krausche, Lars Sundin
  • Publication number: 20140311127
    Abstract: A vehicle emission control system is configured to operatively receive exhaust gas from a combustion engine and includes an exhaust gas after treatment system (EATS) configured to operatively clean the received exhaust gas, a burner unit configured to operatively heat the received exhaust gas to a predetermined temperature before the exhaust gas is provided to the EATS, and a pump unit configured to operatively provide the burner unit with air to be used b the burner unit in a heating process. The pump unit is configured to be operatively propelled by exhaust gas, and the burner unit is arranged upstream the pump unit such that exhaust gas from the burner unit is operatively provided to the pump unit for propelling the pump unit.
    Type: Application
    Filed: June 30, 2014
    Publication date: October 23, 2014
    Applicant: VOLVO LASTVAGNAR AB
    Inventors: Jan LINDBLOM, Martin SJÖHOLM, Lars SUNDIN
  • Patent number: 8424305
    Abstract: A turbocharger unit (18) for an internal combustion engine (10) with at least one exhaust line (15, 16) for conducting exhaust gases away from the combustion chamber (11) of the engine and at least one inlet line (12) for supplying air to the combustion chamber. The turbocharger unit includes a turbine (17) which interacts with a compressor (19) for extracting energy from the exhaust gas flow of the engine and pressurizing the inlet air of the engine. The compressor (19) is of radial type and provided with an impeller with backswept blades (35) where the blade angle (?b2) between an imaginary extension of the center line of the blade between root section and tip section in the direction of the outlet tangent and a line (36) which connects the center axis of the impeller to the outer tip of the blade is at least roughly 45°. The turbine (17) which drives the compressor (19) is of radial type.
    Type: Grant
    Filed: November 15, 2005
    Date of Patent: April 23, 2013
    Assignee: Volvo Lastvagnar AB
    Inventors: Lars Sundin, Magnus Ising, Sebastian Krausche, Per Andersson
  • Patent number: 8333073
    Abstract: An internal combustion engine is provided with an exhaust gas pipe for taking exhaust gases from the engine's combustion chamber and an intake pipe for supplying air to the combustion chamber. The engine includes a turbo charging system with a high-pressure turbine that interacts with a high-pressure compressor and a low-pressure turbine that interacts with a low-pressure compressor, for recovery of energy from the engine's exhaust gas flow and pressurizing of the engine's intake air. The high-pressure turbine is connected to the low-pressure turbine via a duct. An exhaust gas pressure regulator is located in the duct between the high-pressure turbine and the low-pressure turbine.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: December 18, 2012
    Assignee: Volvo Lastvagnar AB
    Inventors: Kent Giselmo, Lars Sundin
  • Publication number: 20120277974
    Abstract: A curve of maximum allowable engine torque as a function of engine rotational speed for controlling a combustion engine is provided, where a combustion engine control unit is arranged to control output torque and engine rotational speed as not to exceed the curve, and where the curve is defined by a torque build up range (n0 to ni), constant power range (n2 to 113) and a torque ramp down range (n3 to n4). The torque ramp down range is defined so that the engine rotational speed at high engine power is reduced, while high engine rotational speeds are allowed at low engine power.
    Type: Application
    Filed: September 11, 2009
    Publication date: November 1, 2012
    Applicant: Volvo Lastvagnar AB
    Inventors: Anders Hedman, Lars Sundin
  • Publication number: 20120186231
    Abstract: A vehicle emission control system is configured to operatively receive exhaust gas from a combustion engine and includes an exhaust gas after treatment system (EATS) configured to operatively clean the received exhaust gas, a burner unit configured to operatively heat the received exhaust gas to a predetermined temperature before the exhaust gas is provided to the EATS, and a pump unit configured to operatively provide the burner unit with air to be used by the burner unit in a heating process. The pump unit is configured to be operatively propelled by exhaust gas, and the burner unit is arranged upstream the pump unit such that exhaust gas from the burner unit is operatively provided to the pump unit for propelling the pump unit.
    Type: Application
    Filed: June 2, 2010
    Publication date: July 26, 2012
    Applicant: VOLVO LASTVAGNAR AB
    Inventors: Jan Lindblom, Martin Sjöholm, Lars Sundin
  • 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: 20090217662
    Abstract: An internal combustion engine is provided with an exhaust gas pipe for taking exhaust gases from the engine's combustion chamber and an intake pipe for supplying air to the combustion chamber. The engine includes a turbo charging system with a high-pressure turbine that interacts with a high-pressure compressor and a low-pressure turbine that interacts with a low-pressure compressor, for recovery of energy from the engine's exhaust gas flow and pressurizing of the engine's intake air. The high-pressure turbine is connected to the low-pressure turbine via a duct. An exhaust gas pressure regulator is located in the duct between the high-pressure turbine and the low-pressure turbine.
    Type: Application
    Filed: November 22, 2005
    Publication date: September 3, 2009
    Applicant: VOLVO LASTVAGNAR AB
    Inventors: Kent Giselmo, Lars Sundin
  • Patent number: 7404294
    Abstract: Method and arrangement for providing and controlling a gas turbine (1) at least one turbine (11, 20, 20?), at least one compressor (2, 5) driven by the turbine and a combustion chamber (16) arranged between the compressor and the turbine in the airflow path. The gas turbine includes devices (8) for direct measurement of the air mass flow at a position upstream of the combustion chamber in the airflow path, with the aim of regulating the quantity of fuel that is delivered to the combustion chamber (16) on the basis of the measured air mass flow.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: July 29, 2008
    Assignee: Volvo Aero Corporation
    Inventor: Lars Sundin
  • 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
  • Publication number: 20060272333
    Abstract: Method and arrangement for providing and controlling a gas turbine (1) at least one turbine (11, 20, 20?), at least one compressor (2, 5) driven by the turbine and a combustion chamber (16) arranged between the compressor and the turbine in the airflow path. The gas turbine includes devices (8) for direct measurement of the air mass flow at a position upstream of the combustion chamber in the airflow path, with the aim of regulating the quantity of fuel that is delivered to the combustion chamber (16) on the basis of the measured air mass flow.
    Type: Application
    Filed: December 5, 2005
    Publication date: December 7, 2006
    Applicant: VOLVO AERO CORPORATION
    Inventor: Lars SUNDIN
  • 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: 20060123785
    Abstract: A turbocharger unit (18) for an internal combustion engine (10) with at least one exhaust line (15, 16) for conducting exhaust gases away from the combustion chamber (11) of the engine and at least one inlet line (12) for supplying air to the combustion chamber. The turbocharger unit includes a turbine (17) which interacts with a compressor (19) for extracting energy from the exhaust gas flow of the engine and pressurizing the inlet air of the engine. The compressor (19) is of radial type and provided with an impeller with backswept blades (35) where the blade angle (?b2) between an imaginary extension of the center line of the blade between root section and tip section in the direction of the outlet tangent and a line (36) which connects the center axis of the impeller to the outer tip of the blade is at least roughly 45°. The turbine (17) which drives the compressor (19) is of radial type.
    Type: Application
    Filed: November 15, 2005
    Publication date: June 15, 2006
    Applicant: VOLVO LASTVAGNAR AB
    Inventors: Lars Sundin, Magnus Ising, Sebastian Krausche, Per Andersson
  • Patent number: 6901661
    Abstract: Method for manufacturing a vane (1) to a gas turbine component intended for guiding a gas flow. The vane (1) is produced by casting, and an internal hole (3) for coolant is then cut out of the cast vane (1). The vane (1) is provided with a starter hole (5), either during casting or once casting is completed, following which the internal hole (3) for coolant is cut out of the vane, proceeding from the starter hole. A method is also disclosed for manufacturing a gas turbine component including a plurality of vanes (1) for guiding a gas flow. The gas turbine component is cast in such a way that it includes the vanes and an internal hole (3) for coolant is then cut out of each of the vanes.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: June 7, 2005
    Assignee: Volvo Aero Corporation
    Inventors: Bertil Jönsson, Lars Sundin
  • Patent number: 6883331
    Abstract: Method and arrangement for providing a gas turbine (1) having a first compressor (2), a combustion chamber (16) and a first turbine (11), the turbine being adapted to drive the compressor via a first shaft (10a, 10b). The gas turbine also has a bleed valve (12) arranged upstream of the first turbine for conducting part of a gas compressed by the compressor past it during engine braking. The invention also relates to a method for engine-braking a gas turbine.
    Type: Grant
    Filed: October 6, 2003
    Date of Patent: April 26, 2005
    Assignee: Volvo Aero Corporation
    Inventors: Bertil Jönsson, Lars Sundin
  • Publication number: 20040103666
    Abstract: Method and arrangement for providing a gas turbine (1) having a first compressor (2), a combustion chamber (16) and a first turbine (11), the turbine being adapted to drive the compressor via a first shaft (10a, 10b). The gas turbine also has a bleed valve (12) arranged upstream of the first turbine for conducting part of a gas compressed by the compressor past it during engine braking. The invention also relates to a method for engine-braking a gas turbine.
    Type: Application
    Filed: October 6, 2003
    Publication date: June 3, 2004
    Applicant: VOLVO AERO CORPORATION
    Inventors: Bertil JONSSON, Lars SUNDIN