Clutch control for locked power take off shaft during power take

Details Clutch control for locked power take off shaft during power take Clutch control for locked power take off shaft during power take

1997-04-29

1998-09-15

Lorence, Richard M.

192 clutches and power-stop control

Clutch and brake

192 85R, 192103F, 74 11, F16D 6704, F16D 43284

Patent

active

058066403

ABSTRACT:
A power take off (PTO) clutch control system for an agricultural tractor is disclosed herein. The PTO clutch is a hydraulic clutch which is operated by a proportional valve capable of pressurizing the clutch with hydraulic fluid at a pressure related to the pulse width of a pulse width modulated (PWM) control signal applied to the valve. The PWM signal is produced by a controller which monitors the input shaft speed and the output shaft speed. A first control signal is applied to the valve when both the input and output shaft speeds are greater than zero. A second control signal is applied to the valve when the input shaft speed has decreased by a predetermined amount and the output shaft speed is substantially zero.

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