Title:
HYDRAULIC CONTROL DEVICE FOR VEHICLE
Document Type and Number:
WIPO Patent Application WO/2013/111304
Kind Code:
A1
Abstract:
Provided is a hydraulic control device that is used in a vehicle equipped with a mechanical oil pump and an electric oil pump, and that enables the size of the electric oil pump to be reduced. When the electric oil pump (EOP) is operated in addition to the mechanical oil pump (MOP), the percentage distributed by the mechanical oil pump (MOP) at a secondary pressure (PL2) and supplied to lubrication-requiring parts (B), which do not require high-pressure oil, is reduced, and the percentage of the line pressure (PL) supplied to the transmission parts and the like (A), which require high-pressure oil, is increased; thus, the necessary operating oil can be supplied to the transmission parts and the like (A). Meanwhile, a deficiency in the secondary pressure (PL2) is compensated by means of the electric oil pump (EOP). The discharge pressure of the electric oil pump (EOP) can be kept lower than the line pressure (PL), so the pump capacity of the electric oil pump (EOP) can be reduced and the size of the electric oil pump (EOP) can be reduced.
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Inventors:
HACHISUWA ISAMU (JP)
HONDA ATSUSHI (JP)
ITO SHINICHI (JP)
NISHIMURA NAOKI (JP)
OHNO SHUJI (JP)
HONDA ATSUSHI (JP)
ITO SHINICHI (JP)
NISHIMURA NAOKI (JP)
OHNO SHUJI (JP)
Application Number:
PCT/JP2012/051681
Publication Date:
August 01, 2013
Filing Date:
January 26, 2012
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
HACHISUWA ISAMU (JP)
HONDA ATSUSHI (JP)
ITO SHINICHI (JP)
NISHIMURA NAOKI (JP)
OHNO SHUJI (JP)
HACHISUWA ISAMU (JP)
HONDA ATSUSHI (JP)
ITO SHINICHI (JP)
NISHIMURA NAOKI (JP)
OHNO SHUJI (JP)
International Classes:
F16H61/02
Foreign References:
| JP2004316832A | 2004-11-11 | |||
| JP2008536060A | 2008-09-04 | |||
| JP2000046166A | 2000-02-18 |
Attorney, Agent or Firm:
IKEDA HARUYUKI (JP)
Haruyuki Ikeda (JP)
Haruyuki Ikeda (JP)
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Claims: