Patents by Inventor Michael Sweppy

Michael Sweppy 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 monitoring crankcase ventilation integrity
    Patent number: 11220939
    Abstract: Methods and systems are provided for monitoring a crankcase ventilation system. In one example, a method may include diagnosing a breach in a crankcase vent tube based on a regression of measurements of pressure in the crankcase vent tube. The regression allows the pressure measurements to be extended across an entire range of operating air flows and the breach may be identified by comparing the regressed pressure measurements to expected crankcase vent tube pressures.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: January 11, 2022
    Assignee: Ford Global Technologies, LLC
    Inventors: Robert Jentz, Matthew Carpenter, Dennis Blanchard, Michael Sweppy
  • Method for controlling an engine having variable cam timing
    Patent number: 7600495
    Abstract: A method for operating an engine having a variable cam timing control system, for controlling a camshaft angle in such engine. The method includes deactivating the variable cam timing system and setting the camshaft angle to a predetermined angle for a predetermined duration after failure in a sensor used to control the variable cam timing system and then reactivating the variable cam timing system after such predetermined time. The deactivating continues during the predetermined duration in the presence of a subsequent failure of the sensor during the predetermined duration. The reactivating comprises driving the cam angle to a camshaft angle established by the variable cam timing system in a predetermined manner. The reactivating occurs over a predetermined reactivation time.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: October 13, 2009
    Assignee: Ford Global Technologies, LLC
    Inventors: John E. Rollinger, Paul A. Pietrzyk, Michael Sweppy, Eric A. Luehrsen, Robert M. Grant
  • Method for controlling an engine having variable cam timing
    Publication number: 20070044742
    Abstract: A method for operating an engine having a variable cam timing control system, for controlling a camshaft angle in such engine. The method includes deactivating the variable cam timing system and setting the camshaft angle to a predetermined angle for a predetermined duration after failure in a sensor used to control the variable cam timing system and then reactivating the variable cam timing system after such predetermined time. The deactivating continues during the predetermined duration in the presence of a subsequent failure of the sensor during the predetermined duration. The reactivating comprises driving the cam angle to a camshaft angle established by the variable cam timing system in a predetermined manner. The reactivating occurs over a predetermined reactivation time.
    Type: Application
    Filed: August 23, 2005
    Publication date: March 1, 2007
    Inventors: John Rollinger, Paul Pietrzyk, Michael Sweppy, Eric Luehrsen, Robert Grant