Patents by Inventor Olaf Wilkens

Olaf Wilkens 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 diagnosing the degree of aging of a catalytic converter disposed in the exhaust gas channel of an internal combustion engine
    Patent number: 7694506
    Abstract: The invention relates to a method for diagnosing the degree of ageing of a catalyst arranged in the exhaust gas channel of an internal combustion engine, wherein the oxygen storage capacity of the catalyst is determined by means of the signals of a waste gas probe arranged upstream and downstream from the catalyst according to the OSC method when a rapid change occurs in the air/fuel ratios between a rich and lean mixture composition supplied to the internal combustion engine. The aim of the invention is to provide a method for determining the degree of ageing of a catalyst arranged in the exhaust gas channel of an internal combustion engine, wherein it is possible to ascertain the degree of ageing of a catalyst in a more accurate and more reliable manner, requiring little measurement effort.
    Type: Grant
    Filed: February 1, 2006
    Date of Patent: April 13, 2010
    Assignee: IAV GmbH Ingenieurgesellschaft Auto und Verkehr
    Inventors: Ulrich Berger, Stefan Lappe, Olaf Wilkens
  • Method for Diagnosing the Degree of Aging of a Catalytic Converter Disposed in the Exhaust Gas Channel of an Internal Combustion Engine
    Publication number: 20070220961
    Abstract: The invention relates to a method for diagnosing the degree of ageing of a catalyst arranged in the exhaust gas channel of an internal combustion engine, wherein the oxygen storage capacity of the catalyst is determined by means of the signals of a waste gas probe arranged upstream and downstream from the catalyst according to the OSC method when a rapid change occurs in the air/fuel ratios between a rich and lean mixture composition supplied to the internal combustion engine. The aim of the invention is to provide a method for determining the degree of ageing of a catalyst arranged in the exhaust gas channel of an internal combustion engine, wherein it is possible to ascertain the degree of ageing of a catalyst in a more accurate and more reliable manner, requiring little measurement effort.
    Type: Application
    Filed: February 1, 2006
    Publication date: September 27, 2007
    Inventors: Ulrich Berger, Stefan Lappe, Olaf Wilkens