Neutral idle and torque converter clutch control

Details Neutral idle and torque converter clutch control Neutral idle and torque converter clutch control

F - Mech Eng,Light,Heat,Weapons

16

H

F16H 61/26 (2006.01) F16H 61/14 (2006.01) F16H 61/20 (2006.01) F16H 59/24 (2006.01) F16H 59/54 (2006.01) F16H 61/02 (2006.01)

Patent

CA 2103947

NEUTRAL IDLE AND TORQUE CONVERTER CLUTCH CONTROL Abstract of the Disclosure An electro-hydraulic control in a power transmission has a neutral idle regulator valve which controls the engagement pressure in a drive establishing device, a torque converter clutch control valve for controlling the operating condition of a torque converter clutch, and a solenoid control valve for controlling the distribution of a bias pressure. A shift valve determines the distribution of the bias pressure to the neutral idle regulator valve, such that in a low forward ratio, the drive establishing device is controlled to a reduced torque capacity when certain vehicle parameters are present and to the torque converter clutch control valve when another forward ratio is established. The pressure level of the bias pressure is determined by the electronic control mechanism disposed within the vehicle. The engagement pressure of both the drive establishing device and the torque converter clutch is determined by the pressure output of the solenoid control valve.

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