Patents by Inventor Christopher L. Koppen

Christopher L. Koppen 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: 11894588
    Abstract: A computer is provided for a fuel cell propulsion system of a motor vehicle. The computer includes one or more processors receiving a temperature signal from one or more temperature sensors and a pressure signal from one or more pressure sensors. The computer further includes a non-transitory computer readable storage medium including instructions, such that the processor is programmed to determine a feedback correction based on the temperature of the coolant and the pressure drop of the coolant across the fuel cell stack. The processor is further programmed to generate a pump command signal based on the feedback correction and a nominal pump command, with the pump command signal actuating a pump to pump coolant at a target pump speed.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: February 6, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Karthikeyan Rajagopal, Brian David Neilson, Sergio Eduardo Garcia, Christopher L Koppen
  • Patent number: 11713734
    Abstract: A multi-function fuel delivery system and method of providing fuel delivery is provided that addresses space-related and cost related challenges as well as other challenges by combining a noise attenuating function, a hydrogen heating function, and a fuel supply rail capable of supplying hydrogen to multiple injectors within a single volume where a heat-transfer core utilizes an existing available internal volume of an attenuating volume or a fuel rail of a hydrogen supply manifold. A hydrogen fuel manifold, a hydrogen heat exchanger, and a fuel rail are housed in a single chamber such that a hydrogen fuel heating/cooling function, a hydrogen fuel noise/vibration attenuating function, providing the heat to the heat-transfer core, and providing the noise-attenuated H2 are performed in the single chamber.
    Type: Grant
    Filed: February 1, 2023
    Date of Patent: August 1, 2023
    Assignee: GM Global Technology Operations LLC
    Inventors: Jie Kou, Joseph Hahn, Christopher L. Koppen, Steven D. Burch, Kenneth Kurzawa
  • Publication number: 20230079419
    Abstract: A computer is provided for a fuel cell propulsion system of a motor vehicle. The computer includes one or more processors receiving a temperature signal from one or more temperature sensors and a pressure signal from one or more pressure sensors. The computer further includes a non-transitory computer readable storage medium including instructions, such that the processor is programmed to determine a feedback correction based on the temperature of the coolant and the pressure drop of the coolant across the fuel cell stack. The processor is further programmed to generate a pump command signal based on the feedback correction and a nominal pump command, with the pump command signal actuating a pump to pump coolant at a target pump speed.
    Type: Application
    Filed: September 14, 2021
    Publication date: March 16, 2023
    Inventors: Karthikeyan Rajagopal, Brian David Neilson, Sergio Eduardo Garcia, Christopher L. Koppen