Patents by Inventor Jens Drückhammer

Jens Drückhammer 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).

  • Patent number: 11492988
    Abstract: A method for determining a combination of an actual intake camshaft phase position of an intake camshaft and an actual exhaust camshaft phase position of an exhaust camshaft of a production internal combustion engine having at least one cylinder, wherein the method is performed in operation of the production internal combustion engine and the relevant actual phase position of the camshafts is determined in relation to an operating point of the production internal combustion engine.
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: November 8, 2022
    Assignee: Volkswagen Aktiengesellschaft
    Inventors: Jens Jeschke, Michael Mazur, Jens Drueckhammer, Frank Wildhagen
  • Publication number: 20210381452
    Abstract: A method for determining a combination of an actual intake camshaft phase position of an intake camshaft and an actual exhaust camshaft phase position of an exhaust camshaft of a production internal combustion engine having at least one cylinder, wherein the method is performed in operation of the production internal combustion engine and the relevant actual phase position of the camshafts is determined in relation to an operating point of the production internal combustion engine.
    Type: Application
    Filed: June 9, 2021
    Publication date: December 9, 2021
    Applicant: Volkswagen Aktiengesellschaft
    Inventors: Jens JESCHKE, Michael MAZUR, Jens DRUECKHAMMER, Frank WILDHAGEN
  • Patent number: 10525793
    Abstract: A method and a system (20) for transmitting heat for a vehicle (10) are described. In this case, the waste heat which is contained in the exhaust gas (3) of the vehicle (10) is stored in a heat accumulator (1) of the vehicle (10). The thermal energy stored in the heat accumulator (1) is conducted to at least one heat sink (11-16). The heat accumulator (1) can be thermally coupled to the at least one heat sink (11-16) and uncoupled therefrom. In the coupled state the amount of heat per time unit that is conducted to the at least one heat sink is set.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: January 7, 2020
    Assignee: Volkswagen Aktiengesellschaft
    Inventors: Christoph Käppner, Jens Drückhammer
  • Publication number: 20150060559
    Abstract: A method and a system (20) for transmitting heat for a vehicle (10) are described. In this case, the waste heat which is contained in the exhaust gas (3) of the vehicle (10) is stored in a heat accumulator (1) of the vehicle (10). The thermal energy stored in the heat accumulator (1) is conducted to at least one heat sink (11-16). The heat accumulator (1) can be thermally coupled to the at least one heat sink (11-16) and uncoupled therefrom. In the coupled state the amount of heat per time unit that is conducted to the at least one heat sink is set.
    Type: Application
    Filed: March 18, 2013
    Publication date: March 5, 2015
    Inventors: Christoph Käppner, Jens Drückhammer
  • Patent number: 6632764
    Abstract: An NOx concentration in exhaust gas is measured downstream of an NOx storage converter. For determining an operating state, particularly damage to the NOx storage converter, when the NOx storage converter switches from an absorption mode to a regeneration mode, the values of characteristic features of an NOx desorption peak in the time curve of the NOx concentration are ascertained and compared to predetermined test patterns, with a comparison result being formed, from which a converter-state signal that characterizes the operating state of the NOx converter is determined.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: October 14, 2003
    Assignee: Volkswagen AG
    Inventors: Jens Drückhammer, Frank Schulze, Axel Lang
  • Patent number: 6499291
    Abstract: A method and apparatus is provided for monitoring the operation of a NOx storage catalytic converter in the exhaust stream of an internal combustion engine. The NOx content of the gas stream upstream and downstream of the catalytic converter is measured and used to determine storage efficiency. This is compared to a threshold value, and if the threshold value is not met a regeneration process is performed. The storage value is measured after regeneration to determine if the catalytic converter is faulty.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: December 31, 2002
    Assignee: Volkswagen AG
    Inventors: Axel Lang, Jens Drückhammer, Frank Schulze