Patent ID: 6612958
Filing Date: 2003-09-02
Classification: F16H,Y10T

Abstract:
An oil pressure control apparatus of a continuously variable transmission, comprising:a continuously variable transmission apparatus-purposed hydraulic servo that provides a predetermined torque capacity for a continuously variable transmission apparatus by acting on the continuously variable transmission apparatus; a friction engagement element-purposed hydraulic servo that provides a predetermined torque capacity for a friction engagement element engageable during a run of a vehicle by acting on the friction engagement element; first pressure regulating means for controlling an oil pressure to be supplied to the continuously variable transmission apparatus-purposed hydraulic servo; second pressure regulating means for controlling an oil pressure to be supplied to the friction engagement element-purposed hydraulic servo; and a solenoid valve that outputs a signal pressure for controlling the first pressure regulating means and the second pressure regulating means, wherein a setting is made such that a torque capacity of the friction engagement element based on a control pressure controlled by the second pressure regulating means becomes less than a torque capacity of the continuously variable transmission apparatus based on a control pressure controlled by the first pressure regulating means.