Title:
HYDRAULIC CONTROL DEVICE OF VEHICLE
Document Type and Number:
Japanese Patent JP2017133567
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To further save consumption energy, in a hydraulic control device which comprises an oil pump having a first discharge port and a second discharge port, and can obtain a merging mode and a shunt mode.SOLUTION: A reverse branch oil passage 63 branched from a reverse oil passage 62 which reaches a reverse brake B1 from a manual valve 61 is arranged, and connected to a reverse pilot port 64 which is arranged at a primary regulator valve 162. When a shift lever 60 is operated to an "R-position", second line hydraulic pressure acts, a spool 164 is downwardly operated, an opening between an input port 170 and a drain port 172 is opened, the pressure of a second oil passage 141 is lowered, and a check valve 142 is closed. As a result, a hydraulic circuit is operated at a shunt mode irrespective of hydraulic states of a first oil passage 93 and the second oil passage, and the hydraulic pressure of oil which is discharged from a second oil pump 51 to the second oil passage can be maintained low compared with that at a merging mode.SELECTED DRAWING: Figure 1
Inventors:
SENDA TATSUSHI
Application Number:
JP2016012523A
Publication Date:
August 03, 2017
Filing Date:
January 26, 2016
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F16H61/00
Attorney, Agent or Firm:
Patent Business Corporation Tani/Abe Patent Office
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