Patents by Inventor Gregory A. Piper

Gregory A. 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).

  • Systems and methods for engine air filter system diagnostics
    Patent number: 11448152
    Abstract: A method for diagnosing an air filter status includes receiving, by a controller, sensor data indicative of a mass air flow rate, an air temperature and an air pressure of an air cleaner assembly including an air filter, determining an air filter life remaining from the sensor data, and receiving data indicative of a vehicle condition. The method also includes determining when a first condition is satisfied and when true, triggering an air filter leakage alert. When the first condition is not satisfied, the controller determines when a second condition is satisfied. When the second condition is satisfied, the controller determines when a third condition is satisfied, and when the third condition is satisfied, triggers an air filter snow intrusion alert. When the second condition is satisfied and the third condition is not satisfied the controller triggers an air filter blockage alert.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: September 20, 2022
    Assignee: GM Global Technology Operations LLC
    Inventors: Lei Li, Terry W. Ostan, Joseph K. Moore, Chong Keong Tang, Gregory A. Piper
  • SYSTEMS AND METHODS FOR ENGINE AIR FILTER SYSTEM DIAGNOSTICS
    Publication number: 20220260031
    Abstract: A method for diagnosing an air filter status includes receiving, by a controller, sensor data indicative of a mass air flow rate, an air temperature and an air pressure of an air cleaner assembly including an air filter, determining an air filter life remaining from the sensor data, and receiving data indicative of a vehicle condition. The method also includes determining when a first condition is satisfied and when true, triggering an air filter leakage alert. When the first condition is not satisfied, the controller determines when a second condition is satisfied. When the second condition is satisfied, the controller determines when a third condition is satisfied, and when the third condition is satisfied, triggers an air filter snow intrusion alert. When the second condition is satisfied and the third condition is not satisfied the controller triggers an air filter blockage alert.
    Type: Application
    Filed: February 16, 2021
    Publication date: August 18, 2022
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Lei Li, Terry W. Ostan, Joseph K. Moore, Chong Keong Tang, Gregory A. Piper