Patents by Inventor Calvin Trescott

Calvin Trescott 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).

  • Methods and system for starting an engine
    Patent number: 11965476
    Abstract: Systems and methods for starting an engine of a hybrid vehicle are described. In one example, the method selects one or more electric machines to start an engine. The method may reference a data structure, such as a matrix or table, and the matrix or table outputs which of the one or more electric machines is applied to start the engine.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: April 23, 2024
    Assignee: Ford Global Technologies, LLC
    Inventors: Maruthi Ravichandran, Calvin Trescott, Jason Meyer, Rajit Johri, Jeffrey Doering
  • SYSTEM AND METHOD FOR CONTROLLING ENGINE STARTING DEVICES
    Publication number: 20230356709
    Abstract: Systems and methods for selecting which of a plurality of engine starting devices starts an internal combustion engine of a hybrid vehicle are presented. In one example, engine starting devices may be selected and operated while a vehicle is operating in a creep mode. The system and method may place a driveline disconnect clutch in a wait state or engage a flywheel starter to improve engine starting.
    Type: Application
    Filed: May 5, 2022
    Publication date: November 9, 2023
    Inventors: Maruthi Ravichandran, Marin Assaliyski, Nicholas D. Moore, Calvin Trescott, Naginder Gogna, Rajit Johri
  • SYSTEM AND METHOD FOR RESTARTING AN ENGINE
    Publication number: 20230287858
    Abstract: Systems and methods for operating a hybrid vehicle are presented. In one example, an integrated starter/generator (ISG) is operated in a speed control mode after an engine stop request. The ISG is prevented from stopping while engine rotational speed is greater than a threshold engine rotational speed so that the engine may be restarted via the ISG.
    Type: Application
    Filed: March 11, 2022
    Publication date: September 14, 2023
    Inventors: Maruthi Ravichandran, Calvin Trescott, Nicholas David Moore, Rajit Johri, Naginder Gogna, Ralph Cunningham
  • METHODS AND SYSTEM FOR STARTING AN ENGINE
    Publication number: 20230031444
    Abstract: Systems and methods for starting an engine of a hybrid vehicle are described. In one example, the method selects one or more electric machines to start an engine. The method may reference a data structure, such as a matrix or table, and the matrix or table outputs which of the one or more electric machines is applied to start the engine.
    Type: Application
    Filed: July 28, 2021
    Publication date: February 2, 2023
    Inventors: Maruthi Ravichandran, Calvin Trescott, Jason Meyer, Rajit Johri, Jeffrey Doering
  • Methods and system for central fuel injection
    Patent number: 10167806
    Abstract: Methods and systems are provided for adjusting engine operating conditions for reduction of NOx emissions. In one example, immediately after a fuel shut-off event, in response to an oxygen content of an exhaust catalyst being higher than a threshold, manifold charge cooling may be increased by increasing the portion of fuel delivered to the engine via manifold injection relative to the portion to fuel delivered via one or more of port and direct injection. By increasing manifold cooling, NOx production may be reduced.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: January 1, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, Adithya Pravarun Re Ranga, Mohannad Hakeem, Calvin Trescott, Joseph Norman Ulrey, Peter C. Moilanen
  • METHODS AND SYSTEM FOR CENTRAL FUEL INJECTION
    Publication number: 20180320625
    Abstract: Methods and systems are provided for adjusting engine operating conditions for mitigation of pre-ignition in one or more engine cylinder. In one example, a method may include, in response to indication of pre-ignition, manifold charge cooling may be increased by increasing the portion of fuel delivered to the engine via manifold injection relative to the portion to fuel delivered via one or more of port and direct injection, while maintaining engine operation at or around a stoichiometric air-fuel ratio.
    Type: Application
    Filed: May 3, 2017
    Publication date: November 8, 2018
    Inventors: Gopichandra Surnilla, Adithya Pravarun Re Ranga, Mohannad Hakeem, Joseph Norman Ulrey, Calvin Trescott
  • METHODS AND SYSTEM FOR CENTRAL FUEL INJECTION
    Publication number: 20180320626
    Abstract: Methods and systems are provided for adjusting engine operating conditions for reduction of NOx emissions. In one example, immediately after a fuel shut-off event, in response to an oxygen content of an exhaust catalyst being higher than a threshold, manifold charge cooling may be increased by increasing the portion of fuel delivered to the engine via manifold injection relative to the portion to fuel delivered via one or more of port and direct injection. By increasing manifold cooling, NOx production may be reduced.
    Type: Application
    Filed: May 3, 2017
    Publication date: November 8, 2018
    Inventors: Gopichandra Surnilla, Adithya Pravarun Re Ranga, Mohannad Hakeem, Calvin Trescott, Joseph Norman Ulrey, Peter C. Moilanen
  • Methods and systems for central fuel injection
    Patent number: 10119490
    Abstract: Methods and systems are provided for adjusting engine operating conditions for mitigation of pre-ignition in one or more engine cylinder. In one example, a method may include, in response to indication of pre-ignition, manifold charge cooling may be increased by increasing the portion of fuel delivered to the engine via manifold injection relative to the portion to fuel delivered via one or more of port and direct injection, while maintaining engine operation at or around a stoichiometric air-fuel ratio.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: November 6, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, Adithya Pravarun Re Ranga, Mohannad Hakeem, Joseph Norman Ulrey, Calvin Trescott
  • Methods and system for central fuel injection
    Patent number: 10066571
    Abstract: Methods and systems are provided for leveraging the charge cooling effect of a manifold fuel injection. A charge cooling effect of a scheduled manifold fuel injection may be predicted based on feedback received from a manifold charge temperature sensor during a preceding manifold injection event. If sufficient charge cooling is not predicted, the manifold fuel injection is temporarily disabled.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: September 4, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Kutaiba Alrefaai, Adithya Pravarun Re Ranga, Calvin Trescott, Mohannad Hakeem, Stephen B. Smith, Gopichandra Surnilla
  • METHODS AND SYSTEM FOR CENTRAL FUEL INJECTION
    Publication number: 20180202383
    Abstract: Methods and systems are provided for leveraging the charge cooling effect of a manifold fuel injection. A charge cooling effect of a scheduled manifold fuel injection may be predicted based on feedback received from a manifold charge temperature sensor during a preceding manifold injection event. If sufficient charge cooling is not predicted, the manifold fuel injection is temporarily disabled.
    Type: Application
    Filed: January 18, 2017
    Publication date: July 19, 2018
    Inventors: Kutaiba Alrefaai, Adithya Pravarun Re Ranga, Calvin Trescott, Mohannad Hakeem, Stephen B. Smith, Gopichandra Surnilla