Patents by Inventor David Knies

David Knies 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).

  • Ascertaining fuel cell inlet humidity by means of pressure sensors, and a mass flow rate-dependent control of the humidifier bypass
    Patent number: 10122033
    Abstract: The invention relates to a fuel cell arrangement (1) having at least one fuel cell (2) with a cathode (3) and an anode. The cathode (3) and the anode each have a reactant feed (4) and a reactant discharge (5), a humidifying device (10) and sensors (12, 13, 14) being provided at least at one of the reactant feeds (4). In particular, the sensors (12, 13, 14) are at least one fluid mass sensor (12) and two pressure sensors (13, 14), the fluid mass sensor (12) and one of the pressure sensors (13) being arranged upstream of the humidifying device (10) and one of the pressure sensors (14) being arranged downstream of the humidifying device (10). The humidifying device (10) can be operated in a controlled manner on the basis of the measurements of the sensors (12, 13, 14). The invention further relates to a method for controlling the humidity of a reactant for such a fuel cell arrangement (1).
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: November 6, 2018
    Assignee: Robert Bosch GmbH
    Inventors: David Knies, Daniel Zirkel
  • ASCERTAINING FUEL CELL INLET HUMIDITY BY MEANS OF PRESSURE SENSORS, AND A MASS FLOW RATE-DEPENDENT CONTROL OF THE HUMIDIFIER BYPASS
    Publication number: 20150295258
    Abstract: The invention relates to a fuel cell arrangement (1) having at least one fuel cell (2) with a cathode (3) and an anode. The cathode (3) and the anode each have a reactant feed (4) and a reactant discharge (5), a humidifying device (10) and sensors (12, 13, 14) being provided at least at one of the reactant feeds (4). In particular, the sensors (12, 13, 14) are at least one fluid mass sensor (12) and two pressure sensors (13, 14), the fluid mass sensor (12) and one of the pressure sensors (13) being arranged upstream of the humidifying device (10) and one of the pressure sensors (14) being arranged downstream of the humidifying device (10). The humidifying device (10) can be operated in a controlled manner on the basis of the measurements of the sensors (12, 13, 14). The invention further relates to a method for controlling the humidity of a reactant for such a fuel cell arrangement (1).
    Type: Application
    Filed: October 7, 2013
    Publication date: October 15, 2015
    Inventors: David Knies, Daniel Zirkel