Patents by Inventor Cedric Karwat

Cedric Karwat 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).

  • Turbocharger bypass valve and actuator assembly therefor having guided toggle
    Patent number: 11333064
    Abstract: A bypass valve assembly for a turbocharger includes a bypass valve having a valve stem rotatable about a valve stem axis for opening and closing the valve. The end of a first crank of an articulated two-bar linkage is connected to the valve stem. The end of a second crank of the linkage is connected to a cam follower engaged with a guide cam. An actuator provides motive force to the cam follower to proceed along the guide cam, which is configured to advance the cam follower along a guide path that is non-linear and non-circular arc, causing the two-bar linkage to rotate the valve stem. Valve stem angular displacement versus actuator stroke can be altered by modification of the shape of the guide path.
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: May 17, 2022
    Assignee: Garrett Transportation I Inc.
    Inventors: Cedric Karwat, Vincent Eumont, Alexandre Wirtzler, Bruno Weber, Romain Guillot
  • Turbocharger with thermo-decoupled wheel contour inlet for water-cooled compressor housing
    Patent number: 10738795
    Abstract: A compressor section includes a compressor wheel and a compressor housing that surrounds the compressor wheel. The compressor housing includes a flow passage with an upstream area. The compressor section also includes a cooling pocket that is defined within the compressor housing. The cooling pocket is configured to receive a coolant for cooling the compressor housing. Furthermore, the compressor section includes a thermo-decoupling pocket that is defined within the compressor housing. The thermo-decoupling pocket is disposed between the cooling pocket and the upstream area of the flow passage. The thermo-decoupling pocket is fluidly connected to an exterior area outside the compressor housing.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: August 11, 2020
    Assignee: GARRETT TRANSPORTATION I INC.
    Inventors: Cedric Karwat, Andreas Heckner, Serge Kuhn, Arnaud Gerard
  • TURBOCHARGER WITH THERMO-DECOUPLED WHEEL CONTOUR INLET FOR WATER-COOLED COMPRESSOR HOUSING
    Publication number: 20190257321
    Abstract: A compressor section includes a compressor wheel and a compressor housing that surrounds the compressor wheel. The compressor housing includes a flow passage with an upstream area. The compressor section also includes a cooling pocket that is defined within the compressor housing. The cooling pocket is configured to receive a coolant for cooling the compressor housing. Furthermore, the compressor section includes a thermo-decoupling pocket that is defined within the compressor housing. The thermo-decoupling pocket is disposed between the cooling pocket and the upstream area of the flow passage. The thermo-decoupling pocket is fluidly connected to an exterior area outside the compressor housing.
    Type: Application
    Filed: February 21, 2018
    Publication date: August 22, 2019
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Cedric Karwat, Andreas Heckner, Serge Kuhn, Arnaud Gerard