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Title:
VARIABLE HYDRAULIC CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/286296
Kind Code:
A1
Abstract:
Provided is a variable hydraulic control system that is not provided with a hydraulic sensor and that uses the control solenoid drive duty of a variable hydraulic oil pump 54 as a target oil pressure, wherein the accuracy of hydraulic control is increased by correcting a voltage, an oil temperature, and a current. Preferably, the target oil pressure or the amount of oil is corrected in accordance with the oil temperature, the output duty is corrected in accordance with the oil temperature, or the output duty is corrected in accordance with the voltage. Accordingly, a variable hydraulic control system that is provided with a highly reliable lubrication system is provided.

Inventors:
AKAGI YOSHIHIKO (JP)
SAGA KOJI (JP)
ORYOJI KAZUHIRO (JP)
Application Number:
PCT/JP2022/003016
Publication Date:
January 19, 2023
Filing Date:
January 27, 2022
Export Citation:
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Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
F01M1/16
Domestic Patent References:
WO2010109622A12010-09-30
Foreign References:
JPH11166408A1999-06-22
JP2017067227A2017-04-06
JP2019157835A2019-09-19
JP2014190225A2014-10-06
JP2014159757A2014-09-04
JPH05240015A1993-09-17
KR101929549B12018-12-17
JP2003279033A2003-10-02
JP2017061876A2017-03-30
JP2013199852A2013-10-03
JP2017180240A2017-10-05
Attorney, Agent or Firm:
KAICHI IP (JP)
Download PDF:
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