| 摘要 |
<p>A hydraulic control device is provided with a linear solenoid valve (1), a shift valve (2), and a controller. The linear solenoid valve (1) has a gain change-over chamber (G1) which produces a biasing force in a direction to close the linear solenoid valve (1) to change over the gain characteristics of the linear solenoid valve (1) when oil pressure is supplied to the gain change-over chamber (G1). The shift valve (2) is configured to be switchable between a supply state in which the output oil pressure of the linear solenoid valve (1) is supplied to the gain switch-over chamber (G1) and a blocking state in which the supply of the output oil pressure is blocked. The controller brings the shift valve (2) into the supply state when a necessary oil pressure of an engagement element (CL) is high and into the blocking state when the necessary oil pressure of the engagement element (CL) is low.</p> |
