Hydraulic clutch control system and method

Details Hydraulic clutch control system and method Hydraulic clutch control system and method

2006-06-02

2008-11-04

Lorence, Richard M. (Department: 3681)

192 clutches and power-stop control

Clutches

Operators

C192S085060, C192S10900B, C192S03000R, C701S068000

Reexamination Certificate

active

07445107

ABSTRACT:
A hydraulic clutch control system includes a clutch, a hydraulic circuit that supplies a hydraulic pressure to a piston of the clutch so as to cause a stroke of the piston for engagement of the clutch, a primary hydraulic pressure signal generation unit that generates a primary hydraulic pressure signal to regulate a magnitude of the hydraulic pressure, a secondary hydraulic pressure signal generation unit that generates a secondary hydraulic pressure signal to induce fluctuations in the hydraulic pressure, a hydraulic pressure control unit that operates the hydraulic circuit to control the hydraulic pressure according to the primary and secondary hydraulic pressure signals, a detection unit that detects the amount of fluctuations in the hydraulic pressure and a piston stroke judgment unit that judges the piston stroke based on the hydraulic pressure fluctuation amount.

REFERENCES:
patent: 5029678 (1991-07-01), Koshizawa
patent: 6658341 (2003-12-01), Inoue et al.
patent: 2595812 (1992-07-01), None
patent: 07239020 (1995-09-01), None

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