Patents by Inventor Gert-Ove WAHLSTROM

Gert-Ove WAHLSTROM 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: 11933210
    Abstract: An exhaust aftertreatment unit for cleaning exhaust gases includes an emission reducing module being a diesel particulate filter, DPF, and/or a diesel oxidation catalyst, DOC, a selective catalyst reduction, SCR, catalyst, an electrical heating element arranged upstream of the emission reducing module, a casing housing at least the emission reducing module and the electrical heating element, and a service lid removably arranged to cover a service opening of the casing through which the emission reducing module may be accessed. The electrical heating element is removably arranged relative the casing and is arranged accessible upon removal of the service lid and the emission reducing module.
    Type: Grant
    Filed: June 17, 2022
    Date of Patent: March 19, 2024
    Assignee: VOLVO TRUCK CORPORATION
    Inventor: Gert-Ove Wahlström
  • Publication number: 20230383683
    Abstract: An Exhaust Aftertreatment System (EATS) arrangement includes a housing, a pre-SCR insert, a PF insert, a first main SCR insert and an exhaust pipe, the pre-SCR insert being arranged to receive exhaust gas entering the EATS, the PF insert being arranged downstream the pre-SCR insert and the first main SCR insert being arranged downstream the PF insert, wherein the pre-SCR insert, the PF insert and the first main SCR insert are arranged in the housing and are each removably mounted in the housing such that each insert may be removed separately from the housing, the pre-SCR insert being mounted along a first geometric axis, the PF insert being mounted along a second geometric axis and the first main SCR insert is mounted along a third geometric axis, the first geometric axis being parallel with the second geometric axis and the third geometric axis is parallel with the first and the second geometric axes or coincides with either one of the first and the second geometric axis and is parallel with the other one of
    Type: Application
    Filed: May 23, 2023
    Publication date: November 30, 2023
    Applicant: VOLVO TRUCK CORPORATION
    Inventor: Gert-Ove WAHLSTRÖM
  • Patent number: 11781458
    Abstract: An exhaust aftertreatment arrangement for cleaning exhaust gases includes a fluid channel for providing a fluid pathway for the exhaust gases, a selective catalyst reduction, SCR, catalyst, arranged in or downstream the fluid channel, a heating arrangement for heating the exhaust gases, the heating arrangement being arranged upstream of the SCR catalyst and comprising an electrical heating element, a first fluid pathway for guiding the exhaust gases to the electrical heating element, and a second fluid pathway for guiding the exhaust gases to bypass the electrical heating element, wherein the heating arrangement is removably arranged relative the fluid channel.
    Type: Grant
    Filed: May 27, 2022
    Date of Patent: October 10, 2023
    Assignee: VOLVO TRUCK CORPORATION
    Inventor: Gert-Ove Wahlström
  • Patent number: 11753982
    Abstract: The invention relates to a method for replacing an exhaust aftertreatment component of an exhaust aftertreatment system in a vehicle or vessel. The exhaust aftertreatment system is delimited by an outer casing and comprises a first sleeve, which extends in an axial direction and contains a first exhaust aftertreatment component mounted directly in the first sleeve. The method comprises the steps of: removing the first exhaust aftertreatment component from the first sleeve, the first sleeve thereby remaining intact within the outer casing, providing a second exhaust aftertreatment component being mounted in a second sleeve, the second sleeve being configured to fit within the first sleeve, and mounting the second sleeve with the second exhaust aftertreatment component in the first sleeve by inserting the second sleeve into the first sleeve in the axial direction thereof.
    Type: Grant
    Filed: January 17, 2022
    Date of Patent: September 12, 2023
    Assignee: VOLVO TRUCK CORPORATION
    Inventor: Gert-Ove Wahlström
  • Patent number: 11746684
    Abstract: An exhaust aftertreatment arrangement for converting NOx emissions. The exhaust aftertreatment arrangement includes a fluid channel for providing a fluid pathway for the exhaust gases, a selective catalyst reduction, SCR, catalyst, arranged in or downstream the fluid channel, an injector configured to inject a liquid reductant for providing ammonia to the SCR catalyst, the injector being arranged upstream of the SCR catalyst, a heating arrangement for heating the injected reductant, the heating arrangement being arranged upstream of the SCR catalyst and comprising an electrical heating element and at least one evaporation member configured to be heated by the heating element. The evaporation member is arranged in the fluid channel such that at least a portion of the injected liquid reductant comes into contact with the evaporation member when injected.
    Type: Grant
    Filed: March 10, 2022
    Date of Patent: September 5, 2023
    Assignee: VOLVO TRUCK CORPORATION
    Inventor: Gert-Ove Wahlström
  • Patent number: 11603785
    Abstract: An exhaust aftertreatment unit for cleaning exhaust gases. The exhaust aftertreatment unit includes an emission reducing module being a diesel particulate filter, DPF, and/or a diesel oxidation catalyst, DOC, a selective catalyst reduction, SCR, catalyst, an electrical heating element arranged upstream of the SCR catalyst, a casing housing at least the emission reducing module, and a service lid removably arranged to cover a service opening of the casing through which the emission reducing module may be accessed. The electrical heating element is removably arranged relative the casing and is arranged accessible upon removal of the service lid.
    Type: Grant
    Filed: March 10, 2022
    Date of Patent: March 14, 2023
    Assignee: VOLVO TRUCK CORPORATION
    Inventor: Gert-Ove Wahlström
  • Patent number: 11555435
    Abstract: The invention relates to a leakage treatment member (50) and an exhaust aftertreatment unit (40) configured to be sealingly arranged in a fluid passage (30) of an exhaust aftertreatment system for treating exhaust from an internal combustion engine, said exhaust aftertreatment unit (40) comprising an exhaust aftertreatment element (42) confined by an outer wall (44) of said exhaust aftertreatment unit, said leakage treatment member being configured to be arranged between:—an inner perimeter (32) of the fluid passage of the exhaust aftertreatment system, and—the outer wall of the exhaust aftertreatment unit, the leakage treatment member comprising an exhaust aftertreatment component for aftertreatment of any leakage of exhaust gases past said aftertreatment unit in said fluid passage.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: January 17, 2023
    Assignee: VOLVO TRUCK CORPORATION
    Inventor: Gert-Ove Wahlström
  • Publication number: 20230003153
    Abstract: An exhaust aftertreatment unit for cleaning exhaust gases includes an emission reducing module being a diesel particulate filter, DPF, and/or a diesel oxidation catalyst, DOC, a selective catalyst reduction, SCR, catalyst, an electrical heating element arranged upstream of the emission reducing module, a casing housing at least the emission reducing module and the electrical heating element, and a service lid removably arranged to cover a service opening of the casing through which the emission reducing module may be accessed. The electrical heating element is removably arranged relative the casing and is arranged accessible upon removal of the service lid and the emission reducing module.
    Type: Application
    Filed: June 17, 2022
    Publication date: January 5, 2023
    Applicant: VOLVO TRUCK CORPORATION
    Inventor: Gert-Ove WAHLSTRÖM
  • Publication number: 20220381172
    Abstract: An exhaust aftertreatment arrangement for cleaning exhaust gases includes a fluid channel for providing a fluid pathway for the exhaust gases, a selective catalyst reduction, SCR, catalyst, arranged in or downstream the fluid channel, a heating arrangement for heating the exhaust gases, the heating arrangement being arranged upstream of the SCR catalyst and comprising an electrical heating element, a first fluid pathway for guiding the exhaust gases to the electrical heating element, and a second fluid pathway for guiding the exhaust gases to bypass the electrical heating element, wherein the heating arrangement is removably arranged relative the fluid channel.
    Type: Application
    Filed: May 27, 2022
    Publication date: December 1, 2022
    Applicant: VOLVO TRUCK CORPORATION
    Inventor: Gert-Ove WAHLSTRÖM
  • Patent number: 11512621
    Abstract: The invention relates to an exhaust aftertreatment arrangement (100) for an exhaust system of an internal combustion engine, said exhaust aftertreatment arrangement (100) comprising a fluid passage (30) for exhaust gases from said exhaust system, said fluid passage (30) defining an inner perimeter (32) and an exhaust aftertreatment unit (40) comprising an exhaust aftertreatment element (42) confined by an outer wall (44) defining an outer periphery (46) of the exhaust aftertreatment unit (40), the exhaust aftertreatment unit (40) being sealingly arranged in said fluid passage (30) for enabling flow of said exhaust gases through said exhaust aftertreatment element (42).
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: November 29, 2022
    Assignee: VOLVO TRUCK CORPORATION
    Inventor: Gert-Ove Wahlström
  • Publication number: 20220307400
    Abstract: An exhaust aftertreatment unit for cleaning exhaust gases. The exhaust aftertreatment unit includes an emission reducing module being a diesel particulate filter, DPF, and/or a diesel oxidation catalyst, DOC, a selective catalyst reduction, SCR, catalyst, an electrical heating element arranged upstream of the SCR catalyst, a casing housing at least the emission reducing module, and a service lid removably arranged to cover a service opening of the casing through which the emission reducing module may be accessed. The electrical heating element is removably arranged relative the casing and is arranged accessible upon removal of the service lid.
    Type: Application
    Filed: March 10, 2022
    Publication date: September 29, 2022
    Inventor: Gert-Ove WAHLSTRÖM
  • Publication number: 20220307402
    Abstract: An exhaust aftertreatment arrangement for converting NOx emissions. The exhaust aftertreatment arrangement includes a fluid channel for providing a fluid pathway for the exhaust gases, a selective catalyst reduction, SCR, catalyst, arranged in or downstream the fluid channel, an injector configured to inject a liquid reductant for providing ammonia to the SCR catalyst, the injector being arranged upstream of the SCR catalyst, a heating arrangement for heating the injected reductant, the heating arrangement being arranged upstream of the SCR catalyst and comprising an electrical heating element and at least one evaporation member configured to be heated by the heating element. The evaporation member is arranged in the fluid channel such that at least a portion of the injected liquid reductant comes into contact with the evaporation member when injected.
    Type: Application
    Filed: March 10, 2022
    Publication date: September 29, 2022
    Applicant: VOLVO TRUCK CORPORATION
    Inventor: Gert-Ove WAHLSTRÖM
  • Publication number: 20220235691
    Abstract: The invention relates to a method for replacing an exhaust aftertreatment component of an exhaust aftertreatment system in a vehicle or vessel. The exhaust aftertreatment system is delimited by an outer casing and comprises a first sleeve, which extends in an axial direction and contains a first exhaust aftertreatment component mounted directly in the first sleeve. The method comprises the steps of: removing the first exhaust aftertreatment component from the first sleeve, the first sleeve thereby remaining intact within the outer casing, providing a second exhaust aftertreatment component being mounted in a second sleeve, the second sleeve being configured to fit within the first sleeve, and mounting the second sleeve with the second exhaust aftertreatment component in the first sleeve by inserting the second sleeve into the first sleeve in the axial direction thereof.
    Type: Application
    Filed: January 17, 2022
    Publication date: July 28, 2022
    Inventor: Gert-Ove Wahlström
  • Publication number: 20220042433
    Abstract: The invention relates to an exhaust aftertreatment arrangement (100) for an exhaust system of an internal combustion engine, said exhaust aftertreatment arrangement (100) comprising a fluid passage (30) for exhaust gases from said exhaust system, said fluid passage (30) defining an inner perimeter (32) and an exhaust aftertreatment unit (40) comprising an exhaust aftertreatment element (42) confined by an outer wall (44) defining an outer periphery (46) of the exhaust aftertreatment unit (40), the exhaust aftertreatment unit (40) being sealingly arranged in said fluid passage (30) for enabling flow of said exhaust gases through said exhaust aftertreatment element (42).
    Type: Application
    Filed: October 9, 2018
    Publication date: February 10, 2022
    Applicant: VOLVO TRUCK CORPORATION
    Inventor: Gert-Ove WAHLSTRÖM
  • Patent number: 11143084
    Abstract: The invention relates to an exhaust aftertreatment system (1) for a combustion engine (110), comprising, an outer casing (2) comprising at least one exhaust gas inlet (3) and at least one exhaust gas outlet (4), at least one catalyst (6, 6?) being located in an inner volume (5) of the outer casing (2), wherein the system (1) is configured such that during use of the system (1) exhaust gas flows from the at least one exhaust gas inlet (3) at an inlet velocity, through the at least one catalyst (6, 6?) at a catalyst velocity, into the inner volume (5) outside the at least one catalyst (6, 6?) and to the at least one exhaust gas outlet (4), and further such that the exhaust gas flows in the inner volume (5) outside the at least one catalyst (6, 6) through at least one cross sectional area (A) being defined and limited by at least a perimeter surface (61, 61?) of the at least one catalyst (6, 6?) and an inner surface (21) of the outer casing (2) or by at least two catalyst parameter surfaces (61, 61?), wherein th
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: October 12, 2021
    Assignee: VOLVO TRUCK CORPORATION
    Inventor: Gert-Ove Wahlström
  • Publication number: 20210270173
    Abstract: The invention relates to a leakage treatment member (50) and an exhaust aftertreatment unit (40) configured to be sealingly arranged in a fluid passage (30) of an exhaust aftertreatment system for treating exhaust from an internal combustion engine, said exhaust aftertreatment unit (40) comprising an exhaust aftertreatment element (42) confined by an outer wall (44) of said exhaust aftertreatment unit, said leakage treatment member being configured to be arranged between:—an inner perimeter (32) of the fluid passage of the exhaust aftertreatment system, and—the outer wall of the exhaust aftertreatment unit, the leakage treatment member comprising an exhaust aftertreatment component for aftertreatment of any leakage of exhaust gases past said aftertreatment unit in said fluid passage.
    Type: Application
    Filed: October 8, 2019
    Publication date: September 2, 2021
    Applicant: VOLVO TRUCK CORPORATION
    Inventor: Gert-Ove WAHLSTRÖM
  • Publication number: 20210040876
    Abstract: The invention relates to an exhaust aftertreatment system (1) for a combustion engine (110), comprising, an outer casing (2) comprising at least one exhaust gas inlet (3) and at least one exhaust gas outlet (4), at least one catalyst (6, 6?) being located in an inner volume (5) of the outer casing (2), wherein the system (1) is configured such that during use of the system (1) exhaust gas flows from the at least one exhaust gas inlet (3) at an inlet velocity, through the at least one catalyst (6, 6?) at a catalyst velocity, into the inner volume (5) outside the at least one catalyst (6, 6?) and to the at least one exhaust gas outlet (4), and further such that the exhaust gas flows in the inner volume (5) outside the at least one catalyst (6, 6) through at least one cross sectional area (A) being defined and limited by at least a perimeter surface (61, 61?) of the at least one catalyst (6, 6?) and an inner surface (21) of the outer casing (2) or by at least two catalyst parameter surfaces (61, 61?), wherein th
    Type: Application
    Filed: April 5, 2018
    Publication date: February 11, 2021
    Applicant: Volvo Truck Corporation
    Inventor: Gert-Ove WAHLSTRÖM
  • Patent number: 9885269
    Abstract: A gas flow regulating device for cleaning a particulate filter is configured to be arranged in connection to the filter at a side thereof in a through-flow of a gas to be used for cleaning the filter. The device is a standalone unit configured to be removably installed in connection with a cleaning process, wherein the device includes a frame defining a gas flow passage and a gas flow regulating element arranged inside the frame, wherein the gas flow regulating element is provided with at least one opening for gas through-flow and a blocking part capable of blocking a portion of a gas through-flow area of the filter such as to force the gas to flow through the at least one opening, wherein the gas flow regulating element is movably arranged between at least two different positions, and wherein the at least one opening covers different portions of the gas through-flow area in the different positions.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: February 6, 2018
    Assignees: Volvo Truck Corporation, Renault Trucks
    Inventors: Albin Hedman, Gert-Ove Wahlström, Tobias Stålfors, Ervin Omerspahic, Ladislaf Verbo
  • Patent number: 9476343
    Abstract: A device is provided for preventing theft of a first vehicle component which is releasably connected to a second vehicle component. The theft preventing device includes a cover member arranged for obstructing removal of the first component from the second component and a locking member, which is configured for locking the cover member or the second component in an operational position in which the cover member obstructs the removal of the first component from the second component.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: October 25, 2016
    Assignee: Volvo Lastvagnar AB
    Inventors: Gert-Ove Wahlström, Christian Dansund
  • Patent number: 9422845
    Abstract: A method and an arrangement for cleaning a particulate filter in a vehicle provided with an internal combustion engine is provided. The particulate filter is mounted in an operative position inside an exhaust muffler under normal operation of the engine. The method involves performing a cleaning process including disassembling and removing the particulate filter from a first end of the muffler; reversing and reassembling the particulate filter a cleaning position at the first end of the muffler; starting and operating the engine by controlling the engine speed according to a predefined cycle until a predetermined condition is fulfilled; and stopping the engine and returning the particulate filter to its operative position inside the exhaust muffler.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: August 23, 2016
    Assignee: Volvo Lastvagnar AB
    Inventor: Gert-Ove Wahlström