Patent ID: 8322135
Filing Date: 2012-12-04
Classification: B60K,B60Y,E02F,F16H

Abstract:
1. A hydraulic device for supplying hydraulic oil to a torque converter, a multi-stage transmission, and a steering device, the hydraulic device comprising: a first pump configured and arranged to discharge hydraulic oil, the first pump being connected to the multi-stage transmission and the steering device via a first hydraulic oil line; a second pump configured and arranged to discharge hydraulic oil, the second pump being connected either to the multi-stage transmission and the steering device via the first hydraulic oil line, or to the torque converter via a second hydraulic oil line; a connection switching unit configured and arranged to selectively connect the second pump to either the first hydraulic oil line or the second hydraulic oil line on the basis of an inputted control signal; an operating state detector configured and arranged to detect an operating state; and a switching controller configured to control, based on the operating state detected by the operating state detector, a switching operation of the connection switching unit to selectively connect the second pump either to the first hydraulic oil line or to the second hydraulic oil line, the switching controller being further configured to inhibit the switching operation of the connection switching unit when the detected operating state is such that either at least one of clutches of the multi-stage transmission and the steering device is in a state transition, or at least one brake of the steering device is being operated.