The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 2025
Filed:
Oct. 02, 2024
GM Global Technology Operations Llc, Detroit, MI (US);
Maqsood Rizwan Ali Khan, Troy, MI (US);
Mark Claywell, Birmingham, MI (US);
Azeem Sarwar, Rochester Hills, MI (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A trigger signal is received from a trigger signal source. A first control signal is issued to a wastegate actuator to open a wastegate in response to the trigger signal. A second control signal is issued to a turbo shaft actuator to rotate a turbine of a turbocharger. The rotation of the turbine causes recirculated air to flow in a recirculation flow path including an exhaust manifold, the turbine, an exhaust wall system, and the wastegate. The exhaust wall system includes a turbine housing of the turbine, exhaust walls disposed between the turbine and the wastegate, and exhaust walls disposed between the turbine and a catalyst brick. At least a portion of the recirculation flow path is adjacent to a side of the catalyst brick. Heat transfer occurs from the recirculated air to the exhaust wall system and to the catalyst brick via the side of the catalyst.