×

Electronic control system for controlling torque converter bypass clutches

  • US 5,029,087 A
  • Filed: 07/24/1989
  • Issued: 07/02/1991
  • Est. Priority Date: 07/24/1989
  • Status: Expired due to Term
First Claim
Patent Images

1. A fluid pressure operated clutch assembly comprising:

  • a driving member, a driven member, each member having a friction surface thereon engagable by the other;

    fluid pressure operated clutch actuator means for frictionally connecting said driving and driven members;

    a pressure source, passage means defined in part by a clutch control valve for distributing control pressure to said actuator means;

    electronically operated valve means for establishing a clutch control valve actuating pressure;

    an electronic processor means for varying said actuating pressure according to variations in operating conditions including torque delivered by said clutch assembly and speed of one or said members;

    said processor means including means for storing a target slip for said clutch assembly for each set of values of said operating conditions, and means for determining a desired slip of said clutch assembly for said set of values by measuring actual slip and subtracting a percentage of the difference between said actual slip and said target slip.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×