Patents by Inventor Jose Francisco Martinez Leyva

Jose Francisco Martinez Leyva 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).

  • SYSTEM AND METHOD FOR DIAGNOSING AN EXHAUST GAS SENSOR
    Publication number: 20230417631
    Abstract: A method and system for monitoring an exhaust gas sensor coupled in an engine exhaust is provided. In one example, the method determines an estimate of an exhaust gas oxygen sensor time constant according to a correlation between a rate of change of a Lambda value and a system time constant.
    Type: Application
    Filed: June 27, 2022
    Publication date: December 28, 2023
    Inventors: Jose Francisco Martinez Leyva, Andrew Bagnasco, Tyler DeWine, Hassene Jammoussi, Adam Krach, Gladys Galicia
  • METHODS AND SYSTEMS FOR EGR SYSTEM
    Publication number: 20230399989
    Abstract: Methods and systems are provided for EGR valve diagnostic. In one example, a method includes providing a correction to a position of the EGR valve to compensate for an altitude of the vehicle. The compensation is based on a comparison of a pressure ratio to a curve rationalized with a barometric pressure.
    Type: Application
    Filed: June 10, 2022
    Publication date: December 14, 2023
    Inventors: Jose Francisco Martinez Leyva, Sumanth Reddy Dadam, Patrick Edward Smithberger, Adam Krach, Edward Doemer
  • System and method for exhaust gas sensor monitoring
    Patent number: 11649780
    Abstract: A method and system for monitoring an exhaust gas sensor coupled in an engine exhaust is provided. In one example, the method adjusts an estimate of an exhaust gas oxygen sensor delay time based on a fuel injection ramping time. The fuel injection ramping time compensates for fuel that is injected to the engine while the engine enters or exits a fuel cut-off mode.
    Type: Grant
    Filed: June 13, 2022
    Date of Patent: May 16, 2023
    Assignee: Ford Global Technologies, LLC
    Inventors: Andrew Bagnasco, Jose Francisco Martinez Leyva, Tyler DeWine