Title:
OIL PUMP OIL PASSAGE SYSTEM
Document Type and Number:
Japanese Patent JP2017082614
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an oil pump oil passage system having a temperature sensitive relief valve and capable of preventing wrong determination due to a secular change of a temperature sensitive member.SOLUTION: An oil pump oil passage system includes: a computing unit G; a temperature sensitive relief valve B that is driven based on a level of an oil temperature and in which an opening area of a relief outflow portion is increased/decreased by a temperature sensitive member; an engine speed indicator C; an oil temperature detection section D; and an oil pressure detection section F, and performs oil pressure determination processing. The oil pump oil passage system performs: first oil pressure determination value determination processing (stp 7) for correcting reduction amount of deformation amount of the temperature sensitive member relative to the oil pressure caused by a secular change and outputting a first oil pressure determination value by using the computing unit G; and the oil pressure determination processing (stp 8) for determining the failure of the temperature sensitive relief valve B when the oil pressure detection section F detects oil pressure lower than the first oil pressure determination value.SELECTED DRAWING: Figure 1
More Like This:
Inventors:
MIYAJIMA JUNICHI
Application Number:
JP2015209391A
Publication Date:
May 18, 2017
Filing Date:
October 23, 2015
Export Citation:
Assignee:
YAMADA SEISAKUSHO KK
International Classes:
F01M1/20; F01M1/16; F01M11/10
Attorney, Agent or Firm:
Kunio Iwahori