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Title:
HYDRAULIC CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2017180609
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To secure a line pressure of a hydraulic circuit when failure occurs in an electrically-driven type oil pump.SOLUTION: A hydraulic control device controls oil in a hydraulic circuit 200 to a line pressure PL, a secondary pressure Psec, and lubrication pressure Plub. The hydraulic control device comprises a mechanical type main pump 201 discharging oil from a first discharge port Po1 as a supply source of the line pressure PL, and an electrically-driven type sub-pump 202 discharging oil from a second discharge port Po2 and a third discharge port Po3 as a supply source of the secondary pressure Psec and the lubrication pressure Plub. The main pump 201 is formed of a variable displacement pump. The sub-pump 202 is variable in pump discharge capacity, and is variable in a ratio between the discharge flow rate of the second discharge port Po2 and the discharge flow rate of the third discharge port Po3.SELECTED DRAWING: Figure 2

Inventors:
ASAOKA HIRONORI
KIMURA KENTA
HIRATA TAKUYA
Application Number:
JP2016066557A
Publication Date:
October 05, 2017
Filing Date:
March 29, 2016
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
F16H61/12; F04B49/22; F15B20/00; F16H59/68; F16H63/50
Domestic Patent References:
JP2014114910A2014-06-26
JP2014077536A2014-05-01
JP2010096304A2010-04-30
JP2009185644A2009-08-20
JP2008069837A2008-03-27
JP2000205301A2000-07-25
Foreign References:
WO2009104313A12009-08-27
Attorney, Agent or Firm:
Sakai International Patent Office