Patent ID: 7445107
Filing Date: 2008-11-04
Classification: F16H

Abstract:
1. A hydraulic clutch control system, comprising: 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.