Title:
VEHICLE SUSPENSION CONTROL DEVICE, VEHICLE CONTROL DEVICE, AND VEHICLE CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2021/112215
Kind Code:
A1
Abstract:
A left-front hydraulic cylinder (2) and a right-front hydraulic cylinder (3) are connected in a cross by a first connecting conduit (8) and a second connecting conduit (9), and a left-rear hydraulic cylinder (4) and a right-rear hydraulic cylinder (5) are connected in a cross by a third connecting conduit (14) and a fourth connecting conduit (15). The first and second connecting conduits (8) and (9) are connected by a front-side bridge passage (20), and a front-side bridge valve (21) is provided in the front-side bridge passage (20). The third and fourth connecting conduits (14) and (15) are connected by a rear-side bridge passage (23), and a rear-side bridge valve (24) is provided in the front-side bridge passage (23). Using signals from a steering angle sensor (46) and a torque sensor (47), a controller (33) determines whether steering is performed as a result of a driver's intent or as a result of input from a road surface, and changes a roll stiffness of a vehicle body in accordance with the determination by opening or closing the front and rear bridge valves (21) and (24).
Inventors:
YAMAOKA FUMIYUKI (JP)
Application Number:
PCT/JP2020/045214
Publication Date:
June 10, 2021
Filing Date:
December 04, 2020
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
B60G21/073; B60G17/016
Foreign References:
| JPH082231A | 1996-01-09 | |||
| JP2005238972A | 2005-09-08 | |||
| JP2009274661A | 2009-11-26 | |||
| JPH0585379A | 1993-04-06 | |||
| JP2007196869A | 2007-08-09 | |||
| JP2018161953A | 2018-10-18 |
Attorney, Agent or Firm:
HIROWA PATENT FIRM (JP)
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