Document Type and Number:
Japanese Patent JPWO2022168595
Kind Code:
A1
Abstract:
A hydraulic supply device includes: a first oil pump configured to supply oil to a supply passage; a second oil pump driven together with the first oil pump or driven when the first oil pump is stopped; a first check valve provided in a first oil passage that allows a suction side of the second oil pump to communicate with an oil source, and configured to close the first oil passage when the second oil pump is stopped; a second check valve provided in a second oil passage that allows a discharge side of the second oil pump to communicate with the supply passage, and configured to close the second oil passage when the second oil pump is stopped; and a third oil passage into which the oil supplied to the supply passage flows, wherein the oil flowing into the third oil passage is used as an auxiliary pressure for operation of the second check valve when the second oil passage is closed.
Application Number:
JP2022579423A
Publication Date:
August 11, 2022
Filing Date:
January 18, 2022
Export Citation:
Domestic Patent References:
| JP2018151014A | 2018-09-27 |
Foreign References:
| WO2020001908A1 | 2020-01-02 |
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