Patent ID: 7169070
Filing Date: 2007-01-30
Classification: F16H,Y10T

Abstract:
1. A transmission controller of a V-belt type continuously variable automatic transmission comprising a primary pressure sensor and a secondary pressure sensor for detecting the pressure value of the primary pressure supplied to the cylinder chamber of the drive pulley and the pressure value of the secondary pressure supplied to the cylinder chamber of the driven pulley respectively, and a hydraulic pressure controller for performing the feedback control so as to allow pressure values detected by each of said sensors to match with the target secondary pressure and the target primary pressure calculated in response to the operational status, wherein: the transmission controller of a V-belt type continuously variable automatic transmission comprises determination means for determining whether or not correlation between the pressure value corresponding to said primary pressure and the pressure value corresponding to said secondary pressure is a predetermined relation; and said hydraulic pressure controller prohibits the control based on said pressure value when said determination means determines said correlation to be said predetermined relation.