×

Apparatus and method for controlling creep torque in a power train of a motor vehicle

  • US 6,113,515 A
  • Filed: 04/30/1998
  • Issued: 09/05/2000
  • Est. Priority Date: 04/30/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. A power train for use in motor vehicles having at least one brake arranged to assume applied and non-applied conditions, said power train comprising:

  • an energy consuming prime mover having inoperative and operative conditions including an idling condition;

    means for supplying energy to said prime mover, said energy suplying means having idle and operative conditions;

    a transmission shiftable into and from a plurality of gears;

    an automated variable-temperature torque transmitting system connected with at least one of said prime mover and said transmission; and

    means for operating said system, including a signal receiving, processing and transmitting control unit, at least one actuator arranged to select the amount of torque transmission by said system in response to signals from said control unit, and means for transmitting signals to said control unit, including means for monitoring the temperature of said system, said control unit being arranged to transmit to said at least one actuator signals which initiate and effect a crawling movement of the vehicle by way of said power train when said transmission is in gear, said prime mover assumes said operative condition in the non-applied condition of said at least one brake, in the inoperative condition of said energy supplying means and while said prime mover is idling to thus induce said system to change, in response to shifting of said transmission into gear, the amount of torque transmission from at least one first value to at least one second value as a function of the monitored temperature of said system.

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