Patents by Inventor John Derek Williams

John Derek Williams 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).

  • Publication number: 20240424934
    Abstract: Embodiments disclosed herein include an electric vehicle charging system comprising an electrolyte flow system including an anolyte tank having an anolyte solution and a catholyte tank having a catholyte solution. A core stack circuit may be coupled to the electrolyte flow system that is configured to receive the anolyte and catholyte solutions and generate a core stack output voltage and current based on flowrates of the anolyte and catholyte solutions. The EV charging system may further include a DC/DC converter that is configured to receive the core stack output voltage and buck or boost the core stack output voltage based on the core stack output voltage and a charging voltage of an EV. The flowrates of the anolyte and catholyte solutions may be controlled based on a charging voltage of the EV and the core stack output voltage, which can reduce a buck or boost ratio of the DC/DC converter.
    Type: Application
    Filed: June 18, 2024
    Publication date: December 26, 2024
    Inventors: John Derek Williams, Andrea Carolina Hacker Davidson, James P. McBride, Travers Kenton Buda
  • Publication number: 20240322502
    Abstract: Systems and methods are provided for thermal management of a thermal monitoring and control plug. The plug may be used to connect an electric vehicle to an electrical energy source in order to charge the electric vehicle. To ensure real-time, accurate temperature monitoring of the thermal monitoring and control plug, a temperature detection system may be used. The temperature detection system may include a thermal truss at least partially surrounding a power conductor terminal of the thermal monitoring and control plug. A temperature sensor may be coupled to the thermal truss and configured to rapidly detect the temperature change of the power conducting terminal.
    Type: Application
    Filed: March 13, 2024
    Publication date: September 26, 2024
    Inventor: John Derek Williams
  • Publication number: 20090183551
    Abstract: A NOx mass estimating unit for estimating the NOx mass output from a compression-ignition combustion engine, the engine comprising a plurality of cylinders, each cylinder comprising a combustion chamber into which fuel is injected by an associated fuel injector, said estimating unit comprising inputs for receiving data related to engine rotation and data related to in-cylinder pressure, and a processing arrangement arranged to determine a NOx mass output value in dependence on said data related to engine rotation and data related to in-cylinder pressure.
    Type: Application
    Filed: January 18, 2008
    Publication date: July 23, 2009
    Inventors: Gerald Thomas Fattic, John Derek Williams
  • Patent number: 6774592
    Abstract: Method and system for controlling a permanent magnet machine are provided. The method provides a sensor assembly for sensing rotor sector position relative to a plurality of angular sectors. The method allows starting the machine in a brushless direct current mode of operation using a calculated initial rotor position based on angular sector position information from the sensor assembly. Upon reaching a predefined mode-crossover criterion, the method allows switching to a sinusoidal mode of operation using rotor angle position based on extrapolating angular sector position information from the sensor assembly.
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: August 10, 2004
    Assignee: Delphi Technologies, Inc.
    Inventors: James E. Walters, John Derek Williams
  • Publication number: 20030196867
    Abstract: A park interlock device for a land-based vehicle including a driver-selectable shifter for selecting a respective one of the propulsion modes of the vehicle is provided. The device includes a generally elongated, hollowed body. The device further includes an actuating rod configured to be axially disposed in said hollowed body. The actuating rod is responsive to increments in linear motion produced when the shifter is set to a new propulsion mode. A detent assembly is configured to securely engage into a respective one of a plurality of notches in correspondence with a selected propulsion mode of the vehicle. A plunger is disposed at one end of the actuating rod.
    Type: Application
    Filed: April 23, 2002
    Publication date: October 23, 2003
    Inventors: Michael Jeffrey Lowry, John Derek Williams
  • Patent number: 6589134
    Abstract: Method, system and controller for electronically controlling a park-interlock device in a land-based vehicle are provided. The method allows for providing a driver-selectable shifter for selecting a respective one of a plurality of propulsion modes of the vehicle. One of the propulsion modes is a park mode. The method further allows for sensing at least one vehicle parameter for determining whether or not the park interlock device is to be actuated to a respective interlock state corresponding to the driver-selected mode and/or an operational mode automatically determined by a controller for stopping and starting during a Hill-hold function in an electric, hybrid electric vehicle. Memory is provided for storing nominal values for each vehicle parameter. A comparing action allows to compare the sensed vehicle parameters relative to the nominal parameter values stored in memory.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: July 8, 2003
    Assignee: Delphi Technologies, Inc.
    Inventors: John Derek Williams, Gerald Thomas Fattic
  • Publication number: 20030102829
    Abstract: Method and system for controlling a permanent magnet machine are provided. The method provides a sensor assembly for sensing rotor sector position relative to a plurality of angular sectors. The method allows starting the machine in a brushless direct current mode of operation using a calculated initial rotor position based on angular sector position information from the sensor assembly. Upon reaching a predefined mode-crossover criterion, the method allows switching to a sinusoidal mode of operation using rotor angle position based on extrapolating angular sector position information from the sensor assembly.
    Type: Application
    Filed: December 3, 2001
    Publication date: June 5, 2003
    Inventors: James E. Walters, John Derek Williams
  • Publication number: 20030060327
    Abstract: Method, system and controller for electronically controlling a park-interlock device in a land-based vehicle are provided. The method allows for providing a driver-selectable shifter for selecting a respective one of a plurality of propulsion modes of the vehicle. One of the propulsion modes is a park mode. The method further allows for sensing at least one vehicle parameter for determining whether or not the park interlock device is to be actuated to a respective interlock state corresponding to the driver-selected mode and/or an operational mode automatically determined by a controller for stopping and starting during a Hill-hold function in an electric, hybrid electric vehicle. Memory is provided for storing nominal values for each vehicle parameter. A comparing action allows to compare the sensed vehicle parameters relative to the nominal parameter values stored in memory.
    Type: Application
    Filed: September 27, 2001
    Publication date: March 27, 2003
    Inventors: John Derek Williams, Gerald Thomas Fattic
  • Publication number: 20030041437
    Abstract: Method and system for assembling a multisensor device that includes at least two sensors operable to provide a respective stream of pulses indicative of angular information of a rotating object are provided. The sensors are assembled so that the streams of pulses have an accurate phasing relationship relative to one another. The method allows to provide a sensor carrier. The method further allows to locate the sensor carrier to have a predefined spatial relationship relative to a target wheel. The sensor carrier includes a passageway for receiving each of the sensors. The passageway allows slidable movement to selected ones of the sensors along a phasing axis. As relative movement between the target wheel and the sensor carrier occurs, each of the sensors is energized to provide a respective stream of pulses. A determining action allows to determine the phasing relationship of each stream of pulses relative to one another.
    Type: Application
    Filed: August 31, 2001
    Publication date: March 6, 2003
    Inventors: John Derek Williams, James E. Walters