VEHICULAR HYDRAULICS SUPPLY DEVICE

摘要

A variable capacity type oil pump, which is driven by an engine, supplies hydraulic pressure to a hydraulic control circuit of an automatic transmission. A range switch mechanism, which includes a motor as a motive power source, switches a shift range of the automatic transmission. Further, a switch operation mechanism, which switches a discharge amount of the oil pump, is driven by the motor of the range switch mechanism. In this case, an operative position of the switch operation mechanism is switched by the motor according to an input rotation speed of the oil pump, thereby switching the discharge amount of the oil pump. Accordingly, the motor of the range switch mechanism is used to drive the switch operation mechanism to switch the discharge amount of the oil pump, and thus a motive power source dedicated to changing the discharge amount of the oil pump is not needed.

主权项

1. A vehicular hydraulics supply device for a vehicle including a variable-capacity oil pump, the oil pump having a variable discharge amount and being rotatably driven by a motive power source of the vehicle, the vehicular hydraulics supply device comprising:
an electric actuator that acts as a motive power source of a range switch mechanism, the range switch mechanism switching a range of a transmission; and a switch operation mechanism driven by the electric actuator to perform a switch operation for adjusting the discharge amount of the oil pump.