Title:
Abnormality detection device for hydraulic circuit and abnormality detection method for hydraulic circuit
Document Type and Number:
Japanese Patent JP6300777
Kind Code:
B2
Abstract:
Abnormality detection device for a hydraulic circuit with oil pump capable of increasing pressure of oil sucked through a suction port and discharging the oil through discharge ports; a switching unit switching between fully and partially discharged states; a pressure regulation unit regulating oil pressure; and a hydraulic pressure detection unit that detects the oil pressure includes: a storage unit that stores a maximum discharge pressure in the partially discharged state; a switching control unit that switches to either one of the discharged states; a pressure regulation control unit that sets a target pressure higher than the maximum discharge pressure in the partially discharged state, and performs pressure regulation control to achieve the target pressure; and a determination unit that determines whether the switching unit has a fixation abnormality in one of the discharged states by comparing hydraulic pressure with maximum discharge pressure in the partially discharged state.
Inventors:
Masato Igarashi
Kakeru Yoshida
Kakeru Yoshida
Application Number:
JP2015241543A
Publication Date:
March 28, 2018
Filing Date:
December 10, 2015
Export Citation:
Assignee:
Subaru corporation
International Classes:
F16H61/12; F16H59/70; F16H59/72; F16H61/02
Domestic Patent References:
| JP2014234909A | ||||
| JP2012112372A |
Attorney, Agent or Firm:
Kazuhiro Ueda