| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hydraulic control device capable of feeding working fluid having a hydraulic pressure suitable for first and second friction engagement means in motion of an auxiliary pump, and suitably securing a transmission torque capacity of the these friction engagement means, miniaturizing the auxiliary pump, and reducing the consumption energy required for the motion of the auxiliary pump, etc. <P>SOLUTION: The hydraulic control device includes a first regulating valve PV for regulating the working fluid from a main pump PM and the auxiliary pump EP to a first hydraulic pressure P1, a second regulating valve SV for regulating a surplus oil therefrom to a second hydraulic pressure P2, a first friction engagement means C1 working in the first hydraulic pressure P1, and a second friction engagement means LC working under a first hydraulic pressure P2. When the first and second friction engagement means C1 and LC are engaged in motion of the auxiliary pump EP, a control means 22 for controlling by outputting a control command value common to each the first and second regulating valves SV, PV regulates the control command value not greater than a predetermined upper limit regulation value determined depending on the relation of the transmission torque capacity of the first and second friction engagement means C1, LC for the control command value. <P>COPYRIGHT: (C)2009,JPO&INPIT |
