Patents by Inventor Andreas Blumenstook

Andreas Blumenstook 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 of diagnosing a catalytic converter
    Patent number: 6151888
    Abstract: The invention is directed to a method for evaluating the operability of a catalytic converter mounted in the exhaust-gas system of an internal combustion engine. In the method, the actual value of a signal of an exhaust-gas probe mounted downstream of the catalytic converter is detected and an expectation value of the signal of the exhaust-gas probe is formed from quantities measured upstream of the catalytic converter. A measure is formed for the deviation of the actual value from the expectation value and the operability of the catalytic converter is evaluated on the basis of the measure.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: November 28, 2000
    Assignee: Robert Bosch GmbH
    Inventors: Erich Schneider, Andreas Blumenstook