Patents by Inventor Cyrill Kammer

Cyrill Kammer 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 reducing emission of nitrogen oxide in a motor vehicle having a lean burning internal combustion engine
    Patent number: 8806851
    Abstract: In a method for reducing the emission of nitrogen dioxide in a motor vehicle having an exhaust gas purification system having an SCR catalytic converter with adsorption centers for nitrogen oxides, an exhaust gas enriched with ammonia is supplied to the SCR catalytic converter above an operating temperature. Below the operating temperature, the exhaust gas supplied to the SCR catalytic converter is enriched with a material such that an adsorption of nitrogen oxides is inhibited at corresponding adsorption centers of the SCR catalytic converter. In order to reduce the overall NOx emissions below a first, predeterminable amount, an exhaust gas enriched with ammonia is supplied to the SCR catalytic converter and the NO2 portion of the total NOx emissions is reduced below a second, predeterminable amount in that NO2 is converted with hydrocarbons stored in the SCR catalytic converter.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: August 19, 2014
    Assignee: Daimler AG
    Inventors: Cyrill Kammer, Berthold Keppeler, Jochen Lahr, Markus Paule, Anke Traebert, Nicole Werquet, Axel Zuschlag
  • Method for Reducing Emission of Nitrogen Oxide in a Motor Vehicle Having a Lean Burning Internal Combustion Engine
    Publication number: 20110005199
    Abstract: In a method for reducing the emission of nitrogen dioxide in a motor vehicle having an exhaust gas purification system having an SCR catalytic converter with adsorption centers for nitrogen oxides, an exhaust gas enriched with ammonia is supplied to the SCR catalytic converter above an operating temperature. Below the operating temperature, the exhaust gas supplied to the SCR catalytic converter is enriched with a material such that an adsorption of nitrogen oxides is inhibited at corresponding adsorption centers of the SCR catalytic converter. In order to reduce the overall NOx emissions below a first, predeterminable amount, an exhaust gas enriched with ammonia is supplied to the SCR catalytic converter and the NO2 portion of the total NOx emissions is reduced below a second, predeterminable amount in that NO2 is converted with hydrocarbons stored in the SCR catalytic converter.
    Type: Application
    Filed: September 9, 2008
    Publication date: January 13, 2011
    Inventors: Cyrill Kammer, Berthold Keppeler, Jochen Lahr, Markus Paule, Anke Traebert, Nicole Werquet, Axel Zuschlag