Patents by Inventor Carola Pfister

Carola Pfister 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: 6687594
    Abstract: The invention relates to a traction slip control method for an automotive vehicle wherein a traction slip control phase for a respective drive wheel is activated by way of a control strategy when the traction slip of said wheel exceeds a predeterminable slip threshold value This method includes a reference transverse acceleration that is recorded for a cornering maneuver to be expected, then an actual transverse acceleration is determined, a difference between the reference transverse acceleration (ay-ref) and the actual transverse acceleration (ay-ist) is calculated, and it is determined whether the amount of the difference exceeds a limit value, and wherein in the case when the amount of the difference exceeds the limit value, the control strategy is modified so that a higher torque can be achieved at least on two wheels than in the case that the amount of the difference does not exceed the limit value. Further, the invention provides a control circuit that implements the above method.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: February 3, 2004
    Assignees: Continental Teves, AG & Co. oHG, Diamler Chrysler AG
    Inventors: Scharad Schafiyha, Jörg Steinbrück, Christof Schütz, Gerhard Fischle, Joachim Jung, Carola Pfister
  • Patent number: 5601347
    Abstract: A method for electronic traction systems using brake intervention on the low-adhesion wheel damps and thereby substantially avoids the undesired traction control oscillations, such as pull-away tramping and drive train oscillations. In particular, an interchange of the low-adhesion wheel to be controlled from one driving wheel to the other is undertaken only when the rotational speed of the previous high-adhesion wheel is greater by a certain amount than that of the previous low-adhesion wheel and when there is no longer any controlling brake pressure at the latter. Also or in addition, the threshold value for the activation of the brake intervention is set to increase traction dynamically by suitably raising the threshold value when drive train oscillation behavior is recognized.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: February 11, 1997
    Assignee: Mercedes-Benz AG
    Inventors: Gerhard Fischle, Matthias Baumann, Ralph Klingel, Carola Pfister
  • Patent number: 5597215
    Abstract: A method for increasing the drive torque achieves the action of a differential lock in that controlled brake engagement takes place on one side of a driven axle provided that there is a speed difference between the wheels on the different sides of a driven vehicle axle which exceeds a threshold value. The regulation engagement is started even when there are only small speed differences between the wheels on the two sides of the driven axle. A reference velocity of the vehicle is determined and, on the basis of the determined reference velocity, wheel calibration and cornering correction take place, and thereafter, the speed difference is determined therefrom. The speed difference thus determined is substantially based on the difference in the adhesion on both sides of this axle.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: January 28, 1997
    Assignee: Mercedes-Benz AG
    Inventors: Gerhard Fischle, Matthias Baumann, Ralph Klingel, Thomas Mieslinger, Carola Pfister
  • Patent number: 5564800
    Abstract: A method controls the driving stability in the event of increased slip at the driving wheels of a motor vehicle having an electronic traction system with braking intervention at the driving wheels. With excessive high-adhesion wheel slip, synchronous braking intervention on both sides is undertaken at the driving wheels when the vehicle is travelling around a curve. A reduction takes place in the brake pressure at the low-adhesion wheel, as used for controlling drive slip or increasing traction, when the vehicle is travelling in a straight line, the high-adhesion wheel slip is used as the control parameter in either situation. This method permits braking interventions at the driving wheels for the purpose of controlling drive slip and/or for increasing traction while still maintaining a high level of driving stability.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: October 15, 1996
    Assignee: Mercedes-Benz AG
    Inventors: Gerhard Fischle, Matthias Baumann, Ralph Klingel, Carola Pfister