Patents by Inventor Andreas Wiartalla

Andreas Wiartalla 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).

  • METHOD AND DEVICE FOR OPERATING AN EXHAUST-GAS AFTER-TREATMENT SYSTEM
    Publication number: 20090151323
    Abstract: The invention relates to a method for operating a motor vehicle exhaust-gas aftertreatment system (1), in which oxygen is fed to and removed from the oxygen tank (8) of an exhaust-gas aftertreatment component (7). According to the invention, the oxygen quantity in the oxygen tank (8) is determined and a rich-lean cycle is influenced in accordance with the determined oxygen quantity. The invention also relates to a motor vehicle exhaust-gas aftertreatment system (1), which permits a temperature regulation of the oxygen tank (8) and/or an uninterrupted desulphation during the transition between a rich operation and a lean operation.
    Type: Application
    Filed: May 25, 2008
    Publication date: June 18, 2009
    Applicant: FEV MOTORENTECHNIK GMBH
    Inventors: Christopher Severin, Juergen Schnitzler, Andreas Wiartalla