公开(公告)号：US20220032707A1

公开(公告)日：2022-02-03

申请号：US17277453

申请日：2019-09-18

Applicant: Hitachi Astemo, Ltd.

Inventor： Yuki YOSHIDA ,  Masatoshi YAMAHATA

IPC: B60G17/015 ,  B60G17/017 ,  B60G17/019

Abstract: A stopped vehicle height of an air suspension for a stop-side wheel on a side that stops first is determined in consideration of a vehicle height that changes in accordance with a vehicle height change of the air suspension for a supply/discharge-side wheel on another side after a stop. Thus, when vehicle height adjustment of the air suspension for the supply/discharge-side wheel is finished, the stopped vehicle height of the air suspension for the stop-side wheel can be adjusted to the vicinity of a target value and the precision in the vehicle height adjustment can be increased.

公开(公告)号：US20230271471A1

公开(公告)日：2023-08-31

申请号：US18014253

申请日：2021-07-06

Applicant: Hitachi Astemo, Ltd.

Inventor： Masatoshi YAMAHATA ,  Ryusuke HIRAO ,  Yuki YOSHIDA

IPC: B60G17/018 ,  B60G17/0165

CPC classification number: B60G17/0182 ,  B60G17/0165 ,  B60G2400/208 ,  B60G2500/10 ,  B60G2401/28 ,  B60G2600/60 ,  B60G2400/0511 ,  B60G2400/0512 ,  B60G2400/252 ,  B60G2400/102 ,  B60G2400/821

Abstract: A controller estimates a state of a vehicle based on a wheel speed sensor provided on the vehicle, and outputs a control signal to a shock absorber provided between a wheel and a vehicle body according to the estimated state of the vehicle. The controller uses information of a sensor of an in-vehicle apparatus other than an apparatus dedicated to the shock absorber as an observed value in the estimation of the state of the vehicle. In other words, the controller uses sensor information of a navigation apparatus corresponding to the in-vehicle apparatus other than the shock absorber, more specifically, gyro information meaning information of a gyro sensor mounted on the navigation apparatus as the observed value in the estimation of the state of the vehicle.

公开(公告)号：US20210323368A1

公开(公告)日：2021-10-21

申请号：US17271007

申请日：2019-08-15

Applicant: Hitachi Astemo, Ltd.

Inventor： Masatoshi YAMAHATA ,  Yuki YOSHIDA ,  Nobuyuki ICHIMARU

IPC: B60G17/015 ,  B60G17/052

Abstract: When a vehicle's driving situation is a rolling state, a compressor is used to transfer compressed air between left and right air suspensions of front wheels, and a compressor is used to transfer compressed air between left and right air suspensions of rear wheels. The air suspensions of the left and right front wheels and the air suspensions of the left and rear wheels thus independently generate counter rolls. This makes it possible to concurrently perform vehicle height adjustment of the air suspensions of the left and right front wheels and vehicle height adjustment of the air suspensions of the left and right rear wheels, which improves responsiveness in counter roll control.