Patents by Inventor Christopher John Piper

Christopher John Piper 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: 11047322
    Abstract: Methods and systems are provided for reducing exhaust residuals during light load conditions in a split exhaust engine via a check valve. In one example, a scavenge exhaust manifold may be maintained above a threshold pressure by introducing fresh air into the scavenge manifold during a valve overlap period, the scavenge manifold coupled to a cylinder of an engine and coupled to an intake passage of the engine.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: June 29, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Joseph Ulrey, John Erik Mikael Hellstrom, Daniel Madison, Christopher John Piper, Andres Ceballos
  • Publication number: 20190301383
    Abstract: Methods and systems are provided for reducing exhaust residuals during light load conditions in a split exhaust engine via a check valve. In one example, a scavenge exhaust manifold may be maintained above a threshold pressure by introducing fresh air into the scavenge manifold during a valve overlap period, the scavenge manifold coupled to a cylinder of an engine and coupled to an intake passage of the engine.
    Type: Application
    Filed: March 28, 2018
    Publication date: October 3, 2019
    Inventors: Joseph Ulrey, John Erik Mikael Hellstrom, Daniel Madison, Christopher John Piper, Andres Ceballos