Patents by Inventor Maruthi Ravichandran

Maruthi Ravichandran 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 RESERVING TORQUE FOR ENGINE STARTING
    Publication number: 20230099071
    Abstract: Systems and methods for operating a hybrid vehicle are described. In one example, a torque reserve for starting an engine via an electric machine is adjusted responsive to vehicle operating conditions. The torque reserve may set aside a portion of torque that an electric machine may produce for cranking and starting an engine.
    Type: Application
    Filed: September 28, 2021
    Publication date: March 30, 2023
    Inventors: Maruthi Ravichandran, Ravikumar Tumu, Jason Meyer, Rajit Johri, Jeffrey Allen Doering
  • 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 to increase available propulsive motor torque during an engine start
    Patent number: 11480145
    Abstract: Systems and methods for starting an engine that may be started via an electric machine and a driveline disconnect clutch are described. In one example, the method estimates a maximum motor propulsive torque during engine starting. The maximum motor propulsive torque may be based on an estimated speed that a torque converter impeller speed will be when an engine cranking period ends.
    Type: Grant
    Filed: September 28, 2021
    Date of Patent: October 25, 2022
    Assignee: Ford Global Technologies, LLC
    Inventors: Judhajit Roy, Jason Meyer, Maruthi Ravichandran, Fazal Syed, Sassan Farahmand