Patent ID: 8666624
Filing Date: 2014-03-04
Classification: F16D,Y10T

Abstract:
1. A clutch control device that controls a clutch by driving a piston using pressure of a working fluid adjusted by a solenoid valve, the clutch including a drive plate that rotates with an input shaft and a driven plate that rotates with an output shaft, wherein the piston is configured to establish frictional contact between the drive plate and the driven plate, the clutch control device comprising: stroke start determining means for determining that a stroke of the piston has started at a starting time and detecting a stroke start pressure at the starting time; stroke end determining means for determining that the stroke of the piston is complete at an ending time and detecting a stroke end pressure at the ending time; stroke end range estimating means for estimating a range of the stroke end pressure from the stroke start pressure detected by the stroke start determining means, based on at least one of a deviation of a proportional factor of a solenoid valve characteristic and a deviation from a set value of a clearance between the piston and the drive plate, wherein the solenoid valve characteristic is a relationship between a command oil pressure and an actual oil pressure; and learning means for learning the stroke end pressure detected by the stroke end determining means when the detected stroke end pressure is within the estimated range of the stroke end pressure.