Patents by Inventor Paul Kueper

Paul Kueper 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 checking the performance of catalysts in internal-combustion engines
    Patent number: 6668631
    Abstract: A process is suggested for checking the catalyst performance in internal-combustion engines, in which by means of detected operating parameters of the internal-combustion engine similar operating conditions are determined. It is suggested to compute from a defined number of measured exhaust gas values during a similar operating condition a statistically backed average exhaust gas value and compare it with a permissible exhaust gas value stored for this operating condition, so that a defective catalyst is recognized in the event of a deviation of the actually determined exhaust gas value from the permissible exhaust gas value.
    Type: Grant
    Filed: July 12, 2001
    Date of Patent: December 30, 2003
    Assignees: Dr. Ing. h.c.F. Porsche Aktiengesellschaft, Audi Aktiengesellschaft, Bayerische Motoren Werke Aktiengesellschaft, Volkswagen Aktiengesellschaft, DaimlerChrysler AG
    Inventors: Paul Kueper, Stefan Peter, Jens Mueller
  • Method and system for the catalytic aftertreatment of the exhaust gas of an internal-combustion engine
    Patent number: 6523342
    Abstract: The present invention relates to a method and a corresponding system for catalytic aftertreatment of the exhaust gas of an internal-combustion engine. Two spatially separate catalyst devices are provided in the exhaust gas system. The first of these catalyst devices is arranged in a position close to the engine, and the second catalyst device is arranged in a position away from the engine. An exothermal reaction is caused to take place during warm-up for heating the second catalyst device.
    Type: Grant
    Filed: August 9, 2001
    Date of Patent: February 25, 2003
    Assignees: Dr. Ing. h.c.F. Porsche Aktiengesellschaft, Audi AG, Bayerische Motoren Werke Aktiengesellschaft, DaimlerChrysler AG, Volkswagen AG
    Inventors: Paul Küper, Tom Brahner
  • Process for monitoring operation of an exhaust gas treatment system
    Patent number: 6367320
    Abstract: A process for monitoring the operation of a system for the aftertreatment of exhaust gas utilizes respective temperature sensors assigned to catalysts in the exhaust gas system. In addition, a sensor for detecting the NOx content in the exhaust gas is assigned to a reduction catalyst. The detected values, or functions thereof, are in each case compared with the definable reference values and when these definable limit values are exceeded, a corresponding defect information is triggered.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: April 9, 2002
    Assignees: Dr. Ing. h.c.F. Porsche Aktiengellschaft, AUDi AG, Bayerische Motoren Werke Aktiengesellschaft, DaimlerChrysler AG, Volkswagon AG
    Inventors: Paul Kueper, Stefan Dietrich Peter, Michael Illek, Jens Mueller, Christian Goerigk, Stefan Wessels
  • Adsorber-catalyst combination for internal combustion engines
    Patent number: 6113864
    Abstract: A combination of an adsorbent with a catalyst for internal combustion engines. The adsorbent-catalyst combination is built up in two or more alternating layers of zones, which are coated to be adsorbing, and zones, which are coated to have catalytic activity, and are connected in series in relation to the flow of exhaust gas. The zones having adsorbing activity are to be designed thermodynamically so that they have a lesser heat transfer than the zones having catalytic activity, so that the zones having catalytic activity have a higher support temperature than the upstream zones having adsorbing activity.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: September 5, 2000
    Assignees: Dr. Ing. h.c.F. Porsche AG, Bayerische Motoren Werke Aktiengesellschaft, DaimlerChrysler AG, Volkswagen Aktiengesellschaft
    Inventors: Paul Kueper, Wulf Sebbesse, Roland Huss, Alf Degen