Patents by Inventor Luis Juarez

Luis Juarez 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 diagnosing stuck ATWU valve
    Patent number: 12180876
    Abstract: Methods and systems are provided for diagnosing a stuck Active Transmission Warmup (ATWU) valve. In one example, a method for an ATWU valve monitoring routine of a vehicle comprises determining a temperature difference between an engine coolant temperature (ECT) and a transmission fluid temperature (TFT) over a duration before the ATWU valve is commanded from a closed position to an open position or from the open position to the closed position comparing a rate of change of the TFT before and after the ATWU valve is commanded to the open position or the closed position; and indicating a stuck ATWU valve based on at least one of the temperature difference, the TFT rate of change comparison, or a combination thereof, based on a calibration parameter.
    Type: Grant
    Filed: March 13, 2023
    Date of Patent: December 31, 2024
    Assignee: Ford Global Technologies, LLC
    Inventors: Sitaram Rejeti, Adam Krach, Vaibhav Khanna, Luis Juarez
  • Methods and systems for diagnosing transmission warm-up valve
    Patent number: 12104976
    Abstract: Systems and methods for diagnosing operation of a transmission warm-up valve are presented. In one example, the transmission warm-up valve is commanded to an open position and an estimated transmission fluid temperature is compared to an actual transmission fluid temperature to determine whether or not the transmission warm-up valve is operating as commanded.
    Type: Grant
    Filed: November 9, 2023
    Date of Patent: October 1, 2024
    Assignee: Ford Global Technologies, LLC
    Inventors: Luis Juarez, Adam Krach, Vaibhav Khanna, Michael Joseph Giunta, Peter Turpel
  • SYSTEMS AND METHODS FOR DIAGNOSING STUCK ATWU VALVE
    Publication number: 20240309798
    Abstract: Methods and systems are provided for diagnosing a stuck Active Transmission Warmup (ATWU) valve. In one example, a method for an ATWU valve monitoring routine of a vehicle comprises determining a temperature difference between an engine coolant temperature (ECT) and a transmission fluid temperature (TFT) over a duration before the ATWU valve is commanded from a closed position to an open position or from the open position to the closed position comparing a rate of change of the TFT before and after the ATWU valve is commanded to the open position or the closed position; and indicating a stuck ATWU valve based on at least one of the temperature difference, the TFT rate of change comparison, or a combination thereof, based on a calibration parameter.
    Type: Application
    Filed: March 13, 2023
    Publication date: September 19, 2024
    Inventors: Sitaram Rejeti, Adam Krach, Vaibhav Khanna, Luis Juarez