Title:
SUSPENSION SYSTEM
Document Type and Number:
Japanese Patent JP2017202749
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To detect an oil leakage failure occurring in a low gas spring 32 so as to reduce negative effects of the oil leakage failure on a vehicle height.SOLUTION: An ECU, when auto leveling control is executed twice only in one wheel (S32:Yes) after opening/closing of a door is detected, discontinues vehicle-height control (S33) and measures oil pressure Px of a low gas spring of the wheel (an abnormal wheel)(S34). The ECU determines that the low gas spring of the abnormal wheel is in an oil leakage abnormality state (S36) when the oil pressure Px is equal to an abnormality determination threshold Pref or less, raises a vehicle height up to a target vehicle height by supplying operating oil to a hydraulic cylinder of the abnormal wheel (S37) and thereafter prohibits vehicle height control (S38).SELECTED DRAWING: Figure 4
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Inventors:
OKIMURA KOTARO
NAKAYAMA HIDEO
KANETANI MASAKI
TABATA MASAAKI
NAKAYAMA HIDEO
KANETANI MASAKI
TABATA MASAAKI
Application Number:
JP2016095735A
Publication Date:
November 16, 2017
Filing Date:
May 12, 2016
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
B60G17/015; B60G17/04
Attorney, Agent or Firm:
Patent business corporation Prospec patent office