Patents by Inventor Steffen Ziel

Steffen Ziel 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 error diagnosis of an ambient-pressure sensor and an intake-manifold pressure sensor
    Patent number: 7463960
    Abstract: In a method for error diagnosis of an ambient-pressure sensor and an intake-manifold pressure sensor of an internal combustion engine, a defective intake-manifold pressure sensor or a defective ambient-pressure sensor is unambiguously detected by measuring the signals of the ambient-pressure sensor and the intake-manifold pressure sensor with the internal combustion engine stopped, and comparing the ambient pressure represented by the sensor signal of the ambient-pressure sensor to the intake-manifold pressure represented by the sensor signal of the intake-manifold pressure sensor to determine a pressure difference. If the determined pressure difference is greater than a predetermined maximum value, at least one additional sensor signal is measured with the internal combustion engine running, which additional sensor signal is used for identifying the defective sensor.
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: December 9, 2008
    Assignee: Robert Bosch GmbH
    Inventors: Christof Thiel, Andreas Bethmann, Steffen Ziel
  • Method for error diagnosis of an ambient-pressure sensor and an intake-manifold pressure sensor
    Publication number: 20060282200
    Abstract: In a method for error diagnosis of an ambient-pressure sensor and an intake-manifold pressure sensor of an internal combustion engine, a defective intake-manifold pressure sensor or a defective ambient-pressure sensor is unambiguously detected by measuring the signals of the ambient-pressure sensor and the intake-manifold pressure sensor with the internal combustion engine stopped, and comparing the ambient pressure represented by the sensor signal of the ambient-pressure sensor to the intake-manifold pressure represented by the sensor signal of the intake-manifold pressure sensor to determine a pressure difference. If the determined pressure difference is greater than a predetermined maximum value, at least one additional sensor signal is measured with the internal combustion engine running, which additional sensor signal is used for identifying the defective sensor.
    Type: Application
    Filed: May 12, 2006
    Publication date: December 14, 2006
    Inventors: Christof Thiel, Andreas Bethmann, Steffen Ziel