Patents by Inventor Andreas Hasert

Andreas Hasert 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 for operating a diesel engine
    Patent number: 7293407
    Abstract: The invention relates to a method for operating a diesel engine in which an air ratio (?) of the fuel which is to be burnt and of the combustion air supplied is set by a control unit (14) according to predetermined values. When a value (15) which is predetermined as a switching criterion is recorded, the control unit (14) switches to a special operating mode for regeneration of a catalytic converter (22) and sets the fuel/air ratio according to predetermined values for this operating mode. To achieve more effective regeneration of the catalytic converter, according to the invention it is provided that at least one afterinjection, which is separated in time from a main injection, of fuel which is also to be burnt takes place in the special operating mode.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: November 13, 2007
    Assignee: DaimlerChrysler AG
    Inventors: Holger Adler, Klaus Allmendinger, Dirk Becker, Oliver Erlenmayer, Andreas Hasert, Hans-Hubert Hemberger, Anton Kerckhoff, Stefan Kurze, Michael Lenz, Thomas Liebscher, Ulrich Merten, Andreas Roll, Norbert Ruzicka
  • Method for operating a diesel engine
    Publication number: 20030182934
    Abstract: The invention relates to a method for operating a diesel engine in which an air ratio (&lgr;) of the fuel which is to be burnt and of the combustion air supplied is set by a control unit (14) according to predetermined values. When a value (15) which is predetermined as a switching criterion is recorded, the control unit (14) switches to a special operating mode for regeneration of a catalytic converter (22) and sets the fuel/air ratio according to predetermined values for this operating mode.
    Type: Application
    Filed: June 2, 2003
    Publication date: October 2, 2003
    Inventors: Holger Adler, Klaus Allmendinger, Dirk Becker, Oliver Erlenmayer, Andreas Hasert, Hans-Hubert Hemberger, Anton Kerckhoff, Stefan Kurze, Michael Lenz, Thomas Liebscher, Ulrich Merten, Andreas Roll, Norbert Ruzicka