Title:
SUSPENSION SYSTEM
Document Type and Number:
Japanese Patent JP2018062217
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To properly perform failure detection in a spring selector valve 62 and to perform proper processing to the failure.SOLUTION: If a climb gradient of a hydraulic pressure to time, which is detected by a hydraulic sensor 90 when a vehicle height is raised to a target vehicle height, is smaller than an open failure determination gradient threshold, an ECU 100 determines that a spring selector valve 62 is in an open failure. Also, when the spring selector valve 62 is controlled in an open valve state, if a change gradient, which is a change gradient of the hydraulic pressure detected by the hydraulic sensor 90 to a change in the vehicle height detected by a vehicle height sensor, is greater than a close failure determination gradient threshold, the ECU 100 determines that the spring selector valve 62 is in a close failure.SELECTED DRAWING: Figure 1
Inventors:
MORIKAWA YUTA
YAMAZAKI TAKESHI
YAMAZAKI TAKESHI
Application Number:
JP2016200542A
Publication Date:
April 19, 2018
Filing Date:
October 12, 2016
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
B60G17/015; B60G17/056
Attorney, Agent or Firm:
Patent business corporation Prospec patent office