Method and apparatus for calibrating clutch fill rates

Details Method and apparatus for calibrating clutch fill rates Method and apparatus for calibrating clutch fill rates

1996-06-27

1998-12-29

Marmor, Charles A.

192 clutches and power-stop control

Clutches

Operators

192109F, 477 79, F16D 1900

Patent

active

058530762

ABSTRACT:
This invention includes an apparatus for calibrating fluid clutch fill times including a valve, a clutch connected to the valve, a fluid supply connected to the valve, a pressure transducer connected between the fluid supply and the valve, and a processor adapted to control the valve, read the pressure transducer, and calculate the time required to fill the clutch. The invention further includes a method for adaptively controlling clutch engagement and disengagement in a clutch control system including signalling a first clutch valve to fill a clutch, measuring the time required to fill the clutch, signalling a second clutch valve to empty a second clutch, and saving the time value. The invention also includes a transmission system for a work vehicle that includes a transmission, two fluid clutches that engage the transmission in two gear ratios, respectively and a transmission controller that will calibrate the clutches and shift the transmission while the vehicle is in motion by engaging one clutch and disengaging another clutch while calculating the time required to fill the first clutch.

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