Patents by Inventor Matthew G. Muhleck

Matthew G. Muhleck 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).

  • Selective catalytic reduction catalyst pre-heating burner assembly and method of controlling burner emissions
    Patent number: 11885251
    Abstract: A vehicle exhaust system including an exhaust pipe section, a selective catalytic reduction (SCR) catalyst, and a burner assembly, connected to the exhaust pipe section at a position upstream of the selective catalytic reduction (SCR) catalyst, for pre-heating the exhaust system prior to engine start-up. The burner assembly includes a burner with a combustion chamber and a connecting tube that extends between the burner and the exhaust pipe section. A metallic mesh filter element is located inside the connecting tube and/or a catalytic washcoat is disposed on an inner surface of the connecting tube to reduce emissions of the burner assembly at start-up. The catalytic washcoat comprises a mixture of a support material and a catalyst material that chemically reacts with emissions generated by the burner to reduce the amount of burner produced emissions released from the exhaust system during pre-heating.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: January 30, 2024
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Thomas M. Harris, Matthew G. Muhleck
  • SELECTIVE CATALYTIC REDUCTION CATALYST PRE-HEATING BURNER ASSEMBLY AND METHOD OF CONTROLING BURNER EMISSIONS
    Publication number: 20230383681
    Abstract: A vehicle exhaust system including an exhaust pipe section, a selective catalytic reduction (SCR) catalyst, and a burner assembly, connected to the exhaust pipe section at a position upstream of the selective catalytic reduction (SCR) catalyst, for pre-heating the exhaust system prior to engine start-up. The burner assembly includes a burner with a combustion chamber and a connecting tube that extends between the burner and the exhaust pipe section. A metallic mesh filter element is located inside the connecting tube and/or a catalytic washcoat is disposed on an inner surface of the connecting tube to reduce emissions of the burner assembly at start-up. The catalytic washcoat comprises a mixture of a support material and a catalyst material that chemically reacts with emissions generated by the burner to reduce the amount of burner produced emissions released from the exhaust system during pre-heating.
    Type: Application
    Filed: May 25, 2022
    Publication date: November 30, 2023
    Inventors: Thomas M. HARRIS, Matthew G. MUHLECK