Patents by Inventor Kai Holdgrewe

Kai Holdgrewe 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).

  • Patent number: 6460408
    Abstract: A method for determining internal pressure in the cylinders of an internal combustion engine by measuring and analyzing structure borne noise signals using a neural network.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: October 8, 2002
    Assignee: DaimlerChrysler AG
    Inventors: Helmut Gimmler, Igor Gruden, Kai Holdgrewe, Ulrich Nester, Stefan Pischinger
  • Patent number: 6459981
    Abstract: In a process for automatic adjustment of handling of a motor vehicle having an internal-combustion engine, operating and condition quantities are determined and compared with reference values. If the operating and condition quantities deviate from the reference values, adjusting signals are generated for adjusting vehicle and engine components. In order to recognize predetermined driving situations, and to make corresponding adjustments for influencing the vehicle handling, starting and ending of predetermined driving modes (acceleration operation, deceleration operation and constant drive operation) are detected by logically evaluating diverse operating and condition quantities. The conditions for detecting the start of a driving condition differ from the conditions for the end of the same driving condition.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: October 1, 2002
    Assignee: DaimlerChrysler AG
    Inventors: Helmut Gimmler, Kai Holdgrewe, Klaus-Peter Kuhn, Christian Onnen
  • Patent number: 6435417
    Abstract: A method for controlling a heating and/or air-conditioning apparatus is provided, wherein, through an intervention unit, a user can perform interventions which lead to different settings of the heating and/or air-conditioning apparatus. Various parameters are read into a control unit and are processed. According to the method, climatic situations are defined by the parameters; upon a user intervention a particular climate situation is detected; the climatic situation is associated with the particular user intervention; and in a prevailing climatic situation the settings of the climate control system pertaining to the associated user intervention are carried out.
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: August 20, 2002
    Assignee: DaimlerChrysler AG
    Inventors: Kai Holdgrewe, Klaus-Peter Kuhn, Christian Onnen, Andreas Proettel, Christian Reitter