×

System for detecting torque of automatic vehicle transmission and controlling the same based on detected torque

  • US 5,726,353 A
  • Filed: 11/20/1996
  • Issued: 03/10/1998
  • Est. Priority Date: 11/21/1995
  • Status: Expired due to Fees
First Claim
Patent Images

1. A system for detecting a torque in an automatic transmission mounted on a vehicle having an engine and wheels to be driven by power transmitted from the engine through the transmission;

  • wherein the improvement comprises;

    a) an elastic coupling means connected to an output shaft of the engine;

    b) detecting means for detecting a rotational speed input to the elastic coupling means;

    c) detecting means for detecting a rotational speed output from the elastic coupling means;

    d) a frictional engaging element provided for engaging/disengaging power transmitted from the engine to the wheels; and

    e) torque calculating means for calculating a first torque based on a difference between the detected rotational speeds when the frictional engaging element is in an engaged state and a second torque based on the difference between the detected rotational speeds when the frictional engaging element is in a disengaged state, to calculate a torque estimated to be actually input to the frictional engaging element based on the first torque and the second torque.wherein said frictional engaging element is controlled to be engaged based upon the calculated torque of the elastic coupling means.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×