Patents by Inventor Carl E. Perry

Carl E. Perry 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 detecting vehicle clutch touch point
    Patent number: 9381912
    Abstract: A hybrid system and method is configured to achieve and maintain a touch point for a clutch so as to allow an engine to rapidly restart. The hybrid system includes an eMachine configured to start the engine. The clutch is configured to operatively connect and disconnect the eMachine and the engine. A motor torque PID controller is configured to operate the eMachine at a desired speed by regulating torque of the eMachine. A clutch pressure PID controller is configured to actuate the clutch to a touch point by regulating clutch pressure. The motor torque PID controller and the clutch pressure PID controller include a compensation function to account for a change in torque caused by actuation of the clutch by the clutch pressure PID controller.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: July 5, 2016
    Assignee: Allison Transmission, Inc.
    Inventors: Stephen T. West, Carl E. Perry
  • SYSTEM AND METHOD FOR DETECTING VEHICLE CLUTCH TOUCH POINT
    Publication number: 20150197245
    Abstract: A hybrid system and method is configured to achieve and maintain a touch point for a clutch so as to allow an engine to rapidly restart. The hybrid system includes an eMachine configured to start the engine. The clutch is configured to operatively connect and disconnect the eMachine and the engine. A motor torque PID controller is configured to operate the eMachine at a desired speed by regulating torque of the eMachine. A clutch pressure PID controller is configured to actuate the clutch to a touch point by regulating clutch pressure. The motor torque PID controller and the clutch pressure PID controller include a compensation function to account for a change in torque caused by actuation of the clutch by the clutch pressure PID controller.
    Type: Application
    Filed: March 26, 2015
    Publication date: July 16, 2015
    Applicant: Allison Transmission, Inc.
    Inventors: Stephen T. West, Carl E. Perry