Patents by Inventor Lennart Andersson

Lennart Andersson 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: 10385751
    Abstract: An exhaust gas arrangement includes an exhaust gas system for conveying an exhaust gas stream. The exhaust gas system includes a turbine and an exhaust gas treatment system. The exhaust gas arrangement further includes a working fluid circulation circuit connected to the exhaust gas system for recovery of energy from the exhaust gas stream. The working fluid circulation circuit includes a first heat exchanger which is arranged at a waste heat source for heat exchange between the waste heat source and a working fluid in the working fluid circulation circuit, and a second heat exchanger positioned in the exhaust gas system for heat exchange between the exhaust gas and the working fluid. The second heat exchanger is positioned downstream of the turbine and upstream of a particle filter in the exhaust gas treatment system. An internal combustion engine system and a vehicle including such an exhaust gas arrangement are also disclosed.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: August 20, 2019
    Assignee: Volvo Truck Corporation
    Inventors: Lennart Andersson, Arne Andersson
  • Patent number: 10378390
    Abstract: An internal combustion engine system with heat recovery includes an internal combustion engine with a waste heat passage, an electric motor, a heat recovery assembly including a working fluid circulation circuit with a working fluid, a first heat source which is adapted to be heated by the waste heat passage and adapted to heat the working fluid, and an expander engine, which is operated by the heated working fluid, and a splitting device, which is connected to the electric motor and is adapted to be connected to a drivetrain of a vehicle and which splitting device is further connected to the expander engine, so that the expander engine is enabled to drive the drivetrain and/or the electric motor. The internal combustion engine system further includes at least a second heat source for providing heat to the heat recovery assembly. A vehicle including such an internal combustion engine system is also provided.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: August 13, 2019
    Assignee: Volvo Truck Corporation
    Inventors: Lennart Andersson, Arne Andersson, Peter Mårdberg
  • Patent number: 10323548
    Abstract: A device for recovery of waste heat generated during operation of an internal combustion engine includes a thermodynamic engine, which includes a working fluid circulation circuit and is configured for recovery of the waste heat a first arrangement for providing a first coolant from a first source for heat exchange with the working fluid in the working fluid circulation circuit, and at least one further arrangement for providing a further coolant from a further source for heat exchange with the working fluid in the working fluid circulation circuit, wherein the further source is at different heat level than the first source during operation of the internal combustion engine.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: June 18, 2019
    Assignee: Volvo Truck Corporation
    Inventors: Lennart Andersson, Arne Andersson
  • Publication number: 20190178152
    Abstract: An internal combustion engine system includes at least one combustor, and a first expander arranged to receive exhaust gases from at least one of the at least one combustor, and to expand and extract energy from the exhaust gases, wherein the system includes a second expander arranged to receive exhaust gases from the first expander, and to expand and extract energy from the exhaust gases.
    Type: Application
    Filed: December 14, 2016
    Publication date: June 13, 2019
    Applicant: VOLVO TRUCK CORPORATION
    Inventors: Lennart ANDERSSON, Arne ANDERSSON, Bengt JOHANSSON, Nhut LAM, Staffan LUNDGREN
  • Patent number: 10301998
    Abstract: A heat exchanger system for treatment of a flow of exhaust gases in an exhaust gas aftertreatment system of a vehicle. The heat exchanger system includes a nitrogen monoxide (NO) oxidation site for oxidizing nitrogen monoxide to nitrogen dioxide (NO2). The NO oxidation site is positioned such that the flow of exhaust gases at a downstream end (40) of the NO oxidation site in use of the heat exchanger system is arranged to proceed at a temperature within a predetermined temperature interval corresponding to a desired NO to NO2 (NO:NO2) ratio interval in the flow of exhaust gases. An exhaust gas aftertreatment system and a vehicle including such a heat exchanger system, and a method for using such a heat exchanger system, are also provided.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: May 28, 2019
    Assignee: Volvo Truck Corporation
    Inventors: Lennart Andersson, Martin Lunden
  • Patent number: 10196941
    Abstract: An exhaust gas system includes an arrangement for conveying an exhaust gas stream and a thermodynamic engine connected to the exhaust gas stream conveying arrangement for recovery of heat from the exhaust gas stream. The thermodynamic engine includes a working fluid circulation circuit. The exhaust gas system includes at least one working fluid release arrangement which is connected between the working fluid circulation circuit and the exhaust, gas conveying arrangement for releasing the working fluid from the working fluid circulation circuit to the exhaust gas conveying arrangement. The exhaust gas stream conveying arrangement includes at least one exhaust gas treatment unit. Further, the working fluid release arrangement is connected upstream of or directly to the exhaust gas treatment unit.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: February 5, 2019
    Assignee: Volvo Truck Corporation
    Inventors: Lennart Andersson, Arne Andersson, Peter Mårdberg
  • Publication number: 20180363535
    Abstract: An internal combustion engine system includes at least one combustor, a compressor arranged to compress air, an air guide arranged to guide compressed air from the compressor to at least one of the at least one combustor, an expander arranged to expand exhaust gases from at least one of the at least one combustor and to extract energy from the expanded exhaust gases, and an exhaust guide arranged to guide exhaust gases from at least one of the at least one combustor to the expander, wherein the exhaust guide is at least partly integrated with the air guide.
    Type: Application
    Filed: December 14, 2015
    Publication date: December 20, 2018
    Applicant: VOLVO TRUCK CORPORATION
    Inventors: Lennart ANDERSSON, Arne ANDERSSON, Bengt JOHANSSON, Nhut LAM, Staffan LUNDGREN
  • Publication number: 20180363526
    Abstract: An internal combustion engine system includes a compressor arranged to compress air, at least one combustor, at least one of the at least one combustor being arranged to receive the compressed air, and an exhaust treatment device arranged to process exhaust gases produced by at least one of the at least one combustor, a heat exchanger arranged to receive the compressed air from the compressor before it reaches the at least one of the at least one combustor, and wherein the heat exchanger is arranged to transfer heat from the compressed air to the exhaust treatment device.
    Type: Application
    Filed: December 14, 2015
    Publication date: December 20, 2018
    Applicant: VOLVO TRUCK CORPORATION
    Inventors: Lennart ANDERSSON, Arne ANDERSSON, Bengt JOHANSSON, Nhut LAM, Staffan LUNDGREN
  • Publication number: 20180347456
    Abstract: A method of controlling a high pressure gas injection internal combustion engine includes injecting, in a first combustion mode, by a first as injection system, a first gaseous fuel into a cylinder of the engine, and accumulating in a container of a second gas injection system excess gaseous fuel from the first fuel system, shifting, in the cylinder, from the first combustion mode to a second combustion mode including determining a value of an air flow related parameter indicative of an air mass flow into the cylinder, determining, based on the determined air flow related parameter value, a value of a fuel flow related parameter indicative of a mass flow of the excess gaseous fuel, and supplying from the container, in accordance with the determined fuel flow related parameter value, the excess gaseous fuel to provide a premix of air and the excess gaseous fuel to the cylinder.
    Type: Application
    Filed: December 7, 2015
    Publication date: December 6, 2018
    Applicant: VOLVO TRUCK CORPORATION
    Inventors: Ingemar MAGNUSSON, Arne ANDERSSON, Lennart ANDERSSON
  • Publication number: 20180320610
    Abstract: A method of controlling an internal combustion engine with a plurality of cylinders includes injecting a first gaseous fuel, at a first pressure, into at least a first cylinder of the cylinders, in a first combustion mode, and simultaneously providing a second gaseous fuel, at a second pressure which is different than the first pressure, for at least a second cylinder of the cylinders, in a second combustion mode which is dissimilar to the first combustion mode, wherein the second cylinder is not the first cylinder.
    Type: Application
    Filed: December 7, 2015
    Publication date: November 8, 2018
    Applicant: VOLVO TRUCK CORPORATION
    Inventors: Ingemar MAGNUSSON, Arne ANDERSSON, Lennart ANDERSSON
  • Publication number: 20180320607
    Abstract: A method is provided for controlling a high pressure gas injection internal combustion engine including at least one cylinder, the method including supplying a first gaseous fuel from a first gas injection system and injecting the first gaseous fuel in at least one of the at least one cylinder. The method includes converting waste gas from the first gas injection system to a second fuel, and injecting the second fuel obtained by the conversion into at least one of said at least one cylinder.
    Type: Application
    Filed: November 13, 2015
    Publication date: November 8, 2018
    Applicant: VOLVO TRUCK CORPORATION
    Inventors: Ingemar MAGNUSSON, Lennart ANDERSSON
  • Publication number: 20170152766
    Abstract: A device for recovery of waste heat generated during operation of an internal combustion engine includes a thermodynamic engine, which includes a working fluid circulation circuit and is configured for recovery of the waste heat a first arrangement for providing a first coolant from a first source for heat exchange with the working fluid in the working fluid circulation circuit, and at least one further arrangement for providing a further coolant from a further source for heat exchange with the working fluid in the working fluid circulation circuit, wherein the further source is at different heat level than the first source during operation of the internal combustion engine.
    Type: Application
    Filed: June 26, 2014
    Publication date: June 1, 2017
    Applicant: VOLVO TRUCK CORPORATION
    Inventors: Lennart ANDERSSON, Arne ANDERSSON
  • Publication number: 20170138221
    Abstract: An exhaust gas system includes an arrangement for conveying an exhaust gas stream and a thermodynamic engine connected to the exhaust gas stream conveying arrangement for recovery of heat from the exhaust gas stream. The thermodynamic engine includes a working fluid circulation circuit. The exhaust gas system includes at least one working fluid release arrangement which is connected between the working fluid circulation circuit and the exhaust, gas conveying arrangement for releasing the working fluid from the working fluid circulation circuit to the exhaust: gas conveying arrangement. The exhaust gas stream conveying arrangement includes at least one exhaust gas treatment unit. Further, the working fluid release arrangement is connected upstream of or directly to the exhaust gas treatment unit.
    Type: Application
    Filed: June 26, 2014
    Publication date: May 18, 2017
    Applicant: VOLVO TRUCK CORPORATION
    Inventors: Lennart ANDERSSON, Arne ANDERSSON, Peter MÅRDBERG
  • Publication number: 20170138242
    Abstract: A heat exchanger system for treatment of a flow of exhaust gases in an exhaust gas aftertreatment system of a vehicle. The heat exchanger system includes a nitrogen monoxide (NO) oxidation site for oxidising nitrogenmonoxide to nitrogen dioxide (NO2). The NO oxidation site is positioned such that the flow of exhaust gases at a downstream end (40) of the NO oxidation site in use of the heat exchanger system is arranged to proceed at a temperature within a predetermined temperature interval corresponding to a desired NO to NO2(NO:NO2) ratio interval in the flow of exhaust gases. An exhaust gas aftertreatment system and a vehicle including such a heat exchanger system, and a method for using such a heat exchanger system, are also provided.
    Type: Application
    Filed: June 27, 2014
    Publication date: May 18, 2017
    Applicant: VOLVO TRUCK CORPORATION
    Inventors: Lennart ANDERSSON, Martin LUNDEN
  • Publication number: 20170130633
    Abstract: An exhaust gas arrangement includes an exhaust gas system for conveying an exhaust gas stream. The exhaust gas system includes a turbine and an exhaust gas treatment system. The exhaust gas arrangement further includes a working fluid circulation circuit connected to the exhaust gas system for recovery of energy from the exhaust gas stream. The working fluid circulation circuit includes a first heat exchanger which is arranged at a waste heat source for heat exchange between the waste heat source and a working fluid in the working fluid circulation circuit, and a second heat exchanger positioned in the exhaust gas system for heat exchange between the exhaust gas and the working fluid. The second heat exchanger is positioned downstream of the turbine and upstream of a particle filter in the exhaust gas treatment system. An internal combustion engine system and a vehicle including such an exhaust gas arrangement are also disclosed.
    Type: Application
    Filed: June 26, 2014
    Publication date: May 11, 2017
    Applicant: VOLVO TRUCK CORPORATION
    Inventors: Lennart ANDERSSON, Arne ANDERSSON
  • Publication number: 20170130612
    Abstract: A system is provided for heat energy recovery in a vehicle including an internal combustion engine, such as a diesel engine, and a corresponding method is provided for operating such a system.
    Type: Application
    Filed: June 26, 2014
    Publication date: May 11, 2017
    Applicant: VOLVO TRUCK CORPORATION
    Inventors: Lennart ANDERSSON, Arne ANDERSSON, Peter MÅRDBERG
  • Publication number: 20170122131
    Abstract: An internal combustion engine system with heat recovery includes an internal combustion engine with a waste heat passage, an electric motor, a heat recovery assembly including a working fluid circulation circuit with a working fluid, a first heat source which is adapted to be heated by the waste heat passage and adapted to heat the working fluid, and an expander engine, which is operated by the heated working fluid, and a splitting device, which is connected to the electric motor and is adapted to be connected to a drivetrain of a vehicle and which splitting device is further connected to the expander engine, so that the expander engine is enabled to drive the drivetrain and/or the electric motor. The internal combustion engine system further includes at least a second heat source for providing heat to the heat recovery assembly. A vehicle including such an internal combustion engine system is also provided.
    Type: Application
    Filed: June 26, 2014
    Publication date: May 4, 2017
    Applicant: VOLVO TRUCK CORPORATION
    Inventors: Lennart ANDERSSON, Arne ANDERSSON, Peter MÅRDBERG
  • Publication number: 20170122199
    Abstract: A two-stroke opposed piston internal combustion engine including a plurality of cylinders, each cylinder being provided with a first piston and a second piston adapted to perform opposed motions in the cylinder, each cylinder being provided with at least one intake port, a communication between an air intake arrangement and the cylinder via the intake port being dependent on the position of the first piston, each cylinder further being provided with at least one exhaust port, a communication between an exhaust guiding arrangement and the cylinder via the exhaust port being dependent on the position of the second piston, at least one of the cylinders being provided with an additional port and an additional port valve, a communication between the cylinder and an additional conduit externally of the cylinder, via the additional port, being controllable with the additional port valve, the air intake arrangement including at least one intake valve for selectively reducing or inhibiting air admittance to at least o
    Type: Application
    Filed: June 16, 2014
    Publication date: May 4, 2017
    Applicant: VOLVO TRUCK CORPORATION
    Inventors: Lennart ANDERSSON, Arne ANDERSSON
  • Patent number: 9618085
    Abstract: A dual-clutch seven speed transmission arrangement and method for use with a transverse engine arrangement in a hybrid vehicle are provided. The dual-clutch seven speed transmission arrangement includes a dual-clutch gearbox comprising an input shaft for odd drive gears and an input shaft for even drive gears, respectively arranged in connection to a first clutch and a second clutch. The input shaft for even drive gears is a hollow shaft enclosing the input shaft for odd drive gears and the input shaft for odd drive gears is arranged to host four odd drive gears. The input shaft for even drive gears is arranged to host three even drive gears and a reverse drive gear. An electric motor is connected to the input shaft for even drive gears.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: April 11, 2017
    Assignee: VOLVO CAR CORPORATION
    Inventors: Ahmet Christian Dzafic, Lennart Andersson
  • Patent number: 9276279
    Abstract: An auxiliary power unit (APU), a method of operating an APU and a vehicle comprising the APU are provided. The APU includes a fuel processor and a fuel cell, the fuel processor being provided with steam, air and dimethyl ether (DME). In order to avoid decreased functionality of the fuel cell caused by lubricants in the DME, a heat exchanger is provided for separating lubricant from the DME.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: March 1, 2016
    Assignee: Volvo Lastvagnar AB
    Inventors: Lennart Andersson, Peter Jozsa