Title:
サスペンション装置
Document Type and Number:
Japanese Patent JP7085502
Kind Code:
B2
Abstract:
To stably perform the changeover of roll stiffness and the control of a vehicle height adjustment.SOLUTION: When the changeover of roll stiffness and the control of a vehicle height adjustment are simultaneously commanded, the changeover of the roll stiffness (mode change control) is performed after performing vehicle height control firstly. In the processing of steps 1, 2, piston rods 1C, 2C, 3C and 4C are protruded toward the outside from cylinders 1A, 2A, 3A and 4A, inner pressure is accordingly lowered by a rod elongation amount, however, on the other hand, the discharge pressure of a pump 33 is adjusted in advance while including a correction amount of the pressure lowering. Then, in the processing of steps 2 to 4, pressure is raised by the pump 33 up to the inner pressure necessary for a mode of the roll stiffness (for example, sports mode) by hydraulic cylinders 1 to 4 in the processing of, for example, a step 6 after reaching a target vehicle height (for example, high vehicle height).SELECTED DRAWING: Figure 3
Inventors:
Mikio Yamashita
Application Number:
JP2019029408A
Publication Date:
June 16, 2022
Filing Date:
February 21, 2019
Export Citation:
Assignee:
Hitachi Astemo, Ltd.
International Classes:
B60G21/067; B60G17/015; B60G21/073; F16F9/46
Domestic Patent References:
| JP2008168747A | ||||
| JP2009292334A | ||||
| JP201598277A | ||||
| JP6092915A | ||||
| JP351604U | ||||
| JP7172130A |
Foreign References:
| US20040169345 |
Attorney, Agent or Firm:
Hirowa Patent Office