Suspension leak check systems and methods

    公开(公告)号:US11912092B2

    公开(公告)日:2024-02-27

    申请号:US17499620

    申请日:2021-10-12

    IPC分类号: B60G17/0185 B60G17/015

    摘要: A system includes: a state module configured to selectively set a present state to a first state; a valve control module configured to determine first target open and closed states for valves of a suspension system based on the present state and to open and close the valves according to the first target open and closed states, respectively; a pump control module configured to, when the valves are in the first target open and closed states, respectively, selectively operate an electric pump in a first direction to increase hydraulic fluid pressure in a first portion of the suspension system; and a leak module configured to selectively diagnose a leak in a first one of the valves associated with the first state based on a first pressure in the first portion of the suspension system while the valves are open and closed according to the first target open and closed states.

    DAMPING FORCE CONTROL DEVICE FOR VEHICLE
    7.
    发明申请

    公开(公告)号:US20170334261A1

    公开(公告)日:2017-11-23

    申请号:US15598416

    申请日:2017-05-18

    发明人: Mitsuhiro TSUMANO

    摘要: A damping force control device for controlling damping forces of shock absorbers by a control device, which is configured to to estimate first vertical speeds at the positions of wheels based on the vertical accelerations of a vehicle body at the positions of the wheels, to estimate second vertical speeds of the vehicle body caused by driver's driving operation based on driving operation amount of the driver, to calculate target damping forces by subtracting products of damping coefficients of the ride comfort control and second vertical speeds from the sums of products of the damping coefficients of the ride comfort control and first vertical speeds and products of damping coefficients for controlling posture change of the vehicle body and the second vertical speeds, and to control damping coefficients of the shock absorbers based on the target damping forces.

    Vehicle height adjustment device
    10.
    发明授权
    Vehicle height adjustment device 失效
    车高调整装置

    公开(公告)号:US08209086B2

    公开(公告)日:2012-06-26

    申请号:US12185414

    申请日:2008-08-04

    IPC分类号: B60G17/08

    摘要: A vehicle height adjustment device includes a vehicle height adjustment unit that changes the vehicle height at each wheel of the vehicle; a vehicle height sensor that detects the vehicle height at each wheel; a vehicle height control unit that executes the vehicle height control; a pressure sensor that detects the fluid pressure within the vehicle height adjustment unit; a control stop unit that temporarily suspends the execution of the vehicle height control if the detected pressure exceeds a threshold pressure; a road surface estimation unit that estimates the condition of a road surface over which the vehicle travels; and a control recovery unit that cancels the temporary suspension of the vehicle height control and allows the vehicle height adjustment unit to change the vehicle height if the road surface estimation unit estimates that the road surface over which the vehicle is traveling satisfies a predetermined condition.

    摘要翻译: 车辆高度调节装置包括车辆高度调节单元,其改变车辆的每个车轮处的车辆高度; 检测车轮高度的车高传感器; 车辆高度控制单元,其执行车辆高度控制; 压力传感器,其检测车高调整单元内的流体压力; 控制停止单元,如果检测到的压力超过阈值压力则暂时停止执行车辆高度控制; 路面估计单元,其估计车辆行驶的路面的状况; 以及控制恢复单元,其抵消所述车辆高度控制的暂时中止,并且如果所述路面估计单元估计所述车辆行驶的路面满足预定条件,则允许车辆高度调节单元改变车辆高度。