Patents by Inventor GERHARD KAHMANN

GERHARD KAHMANN 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 OPERATING AN EXHAUST GAS SYSTEM, METHOD FOR OPERATING A MOTOR VEHICLE AND MOTOR VEHICLE
    Publication number: 20150086455
    Abstract: A method for operating an exhaust gas system of an internal combustion engine having at least one heater and a catalytic converter for converting hydrocarbons, includes operating the heater in such a way that it is adapted to the aging state of the catalytic converter. A method for operating a motor vehicle and a motor vehicle are also provided.
    Type: Application
    Filed: December 1, 2014
    Publication date: March 26, 2015
    Inventors: CARSTEN KRUSE, THOMAS NAGEL, RICHARD DORENKAMP, GERHARD KAHMANN, THORSTEN DUESTERDIEK
  • Method for operating an exhaust gas purification device having a heating apparatus and motor vehicle having the device
    Patent number: 8596048
    Abstract: A method for operating a device for the purification of exhaust gas of an internal combustion engine which is operated with an excess of air includes heating at least one heating apparatus of the device above a predetermined first setpoint temperature. The at least one heating apparatus is at least partially in contact with the exhaust gas, can be activated by electrical energy and is formed at least partially with an oxidation coating. At least the temperature of the at least one heating apparatus or of the exhaust gas is subsequently monitored. An increase in the hydrocarbon fraction of the exhaust gas is initiated if at least the temperature of the heating apparatus or of the exhaust gas has reached a threshold temperature or a low-load phase of the internal combustion engine is present. A motor vehicle having the device is also provided.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: December 3, 2013
    Assignee: EMITEC Gesellschaft fuer Emissionstechnologie mbH
    Inventors: Thomas Nagel, Carsten Kruse, Gerhard Kahmann, Thorsten Düsterdiek
  • METHOD FOR OPERATING AN EXHAUST GAS PURIFICATION DEVICE HAVING A HEATING APPARATUS AND MOTOR VEHICLE HAVING THE DEVICE
    Publication number: 20120042634
    Abstract: A method for operating a device for the purification of exhaust gas of an internal combustion engine which is operated with an excess of air includes heating at least one heating apparatus of the device above a predetermined first setpoint temperature. The at least one heating apparatus is at least partially in contact with the exhaust gas, can be activated by electrical energy and is formed at least partially with an oxidation coating. At least the temperature of the at least one heating apparatus or of the exhaust gas is subsequently monitored. An increase in the hydrocarbon fraction of the exhaust gas is initiated if at least the temperature of the heating apparatus or of the exhaust gas has reached a threshold temperature or a low-load phase of the internal combustion engine is present. A motor vehicle having the device is also provided.
    Type: Application
    Filed: September 6, 2011
    Publication date: February 23, 2012
    Applicants: VOLKSWAGEN AG, EMITEC GESELLSCHAFT FUR EMISSIONSTECHNOLOGIE MBH
    Inventors: THOMAS NAGEL, CARSTEN KRUSE, GERHARD KAHMANN, THORSTEN DÜSTERDIEK