Clutch pressure control apparatus and method for a working vehic

Details Clutch pressure control apparatus and method for a working vehic Clutch pressure control apparatus and method for a working vehic

1998-09-16

2000-09-05

Lorence, Richard M.

192 clutches and power-stop control

Transmission control and clutch control

Common control

192 362, 192 85R, 192103C, B60K 4102

Patent

active

061128708

ABSTRACT:
In carrying out a shifting operation in a working vehicle such as a tractor, an actual acceleration of the working vehicle is measured, and a feedback control of a control hydraulic pressure applied to a hydraulic clutch is performed to fix a jerk which is a differentiation of the measured acceleration with respect to time. Thereafter, a feedback control is performed to fix the acceleration. A theoretical running speed is derived from a rotating speed of the engine and a speed position detected. When an actual speed of the working vehicle becomes equal to the theoretical running speed, The control hydraulic pressure applied to the hydraulic clutch is increased to a maximum.

REFERENCES:
patent: 4343387 (1982-08-01), Hofbauer
patent: 4924983 (1990-05-01), Katayama et al.
patent: 4979599 (1990-12-01), Nishida
patent: 5450768 (1995-09-01), Bulgrien et al.
patent: 5806640 (1998-09-01), Kale

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