Vehicle hydraulic system and vehicle height adjustment device including the vehicle hydraulic system
AssigneeAstemo, Ltd.
InventorsYosuke FUJIKAWA, Yosuke MURAKAMI
Life of this patent
Estimating the term…
Abstract
The vehicle hydraulic system includes a hydraulic circuit connecting a reservoir that stores a hydraulic fluid and a jack chamber of a hydraulic jack, a pump interposed in the hydraulic circuit, and capable of a forward rotation operation and a reverse rotation operation, and a switching valve configured to switch a flow direction in the hydraulic circuit. The switching valve switches a flow direction in the hydraulic circuit according to a change in the suction pressure and the discharge pressure of the pump due to switching between the forward rotation operation and the reverse rotation operation of the pump.
Claims7
A vehicle hydraulic system comprising:
- a hydraulic circuit connecting a reservoir that stores a hydraulic fluid and a jack chamber of a hydraulic jack;
- a pump interposed in the hydraulic circuit, and capable of a forward rotation operation and a reverse rotation operation;
- and
- a switching valve configured to switch a flow direction in the hydraulic circuit according to a change in suction pressure and discharge pressure of the pump due to switching between the forward rotation operation and the reverse rotation operation of the pump, wherein
- a connection port, which serves as a discharge side of the pump when a hydraulic fluid in the jack chamber is discharged from the pump to return to the reservoir, is connected to both a flow path that keeps a valve mechanism of the switching valve open due to the discharge pressure of the pump, and a flow path through which the hydraulic fluid flows to the reservoir via the opened valve mechanism.
Dependencies are inferred from the claim text.