Title:
SUSPENSION DEVICE OF VEHICLE
Document Type and Number:
Japanese Patent JP2019026157
Kind Code:
A
Abstract:
To prevent excessive pressure of a passage between a control valve and a hydraulic oil feeding device, even if the control valve is brought into a closed valve state after a vehicle height reaches a predetermined height in controlling raising of a vehicle height, and to prevent deterioration of components.SOLUTION: Passing of electric currents to an electric motor is stopped so that rotation of the electric motor stops after a vehicle height to be detected by a vehicle height sensor exceeds a predetermined vehicle height of a first gas spring. A valve for adjusting a vehicle height is switched from an opened valve state into a closed valve state and a signal showing pressure at the time when the height reaches the predetermined vehicle height is made to be memorized by hydraulic oil memorizing means, at timing when the vehicle height detected by the vehicle height sensor becomes or falls below the predetermined vehicle height. An original valve is changed into a closed valve state at timing when the pressure detected by the pressure sensor becomes or falls below a predetermined first threshold pressure lower than the pressure memorized by the hydraulic oil memorizing means.SELECTED DRAWING: Figure 2
Inventors:
NUMASAWA TAKETAKA
YAMAZAKI TAKESHI
ODA TOSHIHIRO
HARADA YASUHIKO
MANABE KYOHEI
YAMAZAKI TAKESHI
ODA TOSHIHIRO
HARADA YASUHIKO
MANABE KYOHEI
Application Number:
JP2017149630A
Publication Date:
February 21, 2019
Filing Date:
August 02, 2017
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
B60G17/015; B60G21/067; B60G21/073
Attorney, Agent or Firm:
Patent business corporation Prospec patent office