Hydraulic circuit for vehicle, vehicle equipped with same, and control method therefor

摘要

In a hydraulic circuit for a vehicle including an electric pump power steering system (EHPS), a hydraulic pressure supply system including a cylinder to store a second hydraulic pressure while a vehicle is traveling and supply the stored second hydraulic pressure to a clutch circuit as a third hydraulic pressure when being supplied with hydraulic pressure after storing the second hydraulic pressure. The hydraulic circuit also includes a connecting path to connect, at the start of the vehicle, the cylinder and the EHPS system to allow a first hydraulic pressure to be supplied to the cylinder by drive of a motor. It is therefore possible to reduce electric power consumed during idling stop mode and shorten a recovery time from the idling stop mode.

主权项

1. A hydraulic circuit for a vehicle, comprising:
a power steering system including a first hydraulic pump configured to supply a first hydraulic pressure to a steering assistance device that assists steering performance of a steering, and an electric motor configured to operate the first hydraulic pump; and a hydraulic pressure supply system including a second hydraulic pump configured to supply a second hydraulic pressure to at least a driving force transmitting device, wherein the hydraulic pressure supply system includes a hydraulic pressure storage device configured to store the second hydraulic pressure while the vehicle is traveling and supply the stored second hydraulic pressure to at least the driving force transmitting device when the hydraulic pressure storage device is supplied with hydraulic pressure after storing the second hydraulic pressure, and the hydraulic circuit for the vehicle includes a connecting path configured such that, at the start of the vehicle, the connecting path connects the hydraulic pressure storage device and the power steering system to allow the first hydraulic pressure to be supplied to the hydraulic pressure storage device by drive of the electric motor.