Title:
HYDRAULIC PRESSURE SUPPLY MECHANISM AND OIL PUMP DEVICE
Document Type and Number:
Japanese Patent JP2018194103
Kind Code:
A
Abstract:
To miniaturize a hydraulic pressure supply mechanism.SOLUTION: A hydraulic pressure supply mechanism includes a first oil pump, a second oil pump having a maximum discharge pressure lower than a maximum discharge pressure of the first oil pump, a first oil passage connecting a discharge side of the first oil pump and an oil pressure supply destination, a second oil passage connected to the first oil passage, a third oil passage connected to the discharge side of the second oil pump, a fourth oil passage connected to a suction side of the second oil pump, a spool capable of switching a communication state between the oil passages by axial movement, a fifth oil passage connecting the first oil passage or the second oil passage and an end portion at one side of the spool, and an energization member for energizing the spool in a direction toward one side from the other side. The spool can switch the communication state of the second oil passage and the third oil passage, and the communication state of the third oil passage and the fourth oil passage according to the oil pressure applied to the end portion at one side of the spool through the fifth oil passage.SELECTED DRAWING: Figure 6
Inventors:
YAMAMOTO KATSUHIRO
Application Number:
JP2017098943A
Publication Date:
December 06, 2018
Filing Date:
May 18, 2017
Export Citation:
Assignee:
SUBARU CORP
International Classes:
F04B23/04; F16H61/00
Domestic Patent References:
| JP2008223755A | 2008-09-25 | |||
| JP2003139230A | 2003-05-14 | |||
| JP2017125576A | 2017-07-20 |
Attorney, Agent or Firm:
Miaki Kametani
Tetsuo Kanamoto
Koji Hagiwara
Kazuki Matsumoto
Tetsuo Kanamoto
Koji Hagiwara
Kazuki Matsumoto