公开(公告)号：US20230113913A1

公开(公告)日：2023-04-13

申请号：US17499581

申请日：2021-10-12

Applicant: DRiV Automotive Inc.

Inventor： Nandish CALCHAND ,  Stein SLOOTMAEKERS ,  Peter BOON

IPC: B60G17/0185 ,  B60G17/015 ,  B60G17/019

Abstract: A state module selectively sets a present state to a first state in a predetermined order of states; a valve control module determines first target open and closed states for valves of a suspension system based on the present state and opens and closes 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 of the suspension system in a first direction and pump hydraulic fluid toward the suspension system; and a diagnosis module configured to: record first and second values of pressures within the suspension system measured using pressure sensors, respectively, before and after the operation of the electric pump in the first direction, respectively; and selectively diagnose faults in a first subset of the valves based on whether pressure increases occurred.

公开(公告)号：US20230113819A1

公开(公告)日：2023-04-13

申请号：US17499679

申请日：2021-10-12

Applicant: DRiV Automotive Inc.

Inventor： Bert VANDERSMISSEN ,  Peter BOON

IPC: B60W30/045 ,  B60G17/08 ,  B60G17/015 ,  B60G17/016 ,  B60G17/0195 ,  B60W10/04 ,  B60W10/18 ,  B60W10/20

Abstract: A suspension system and associated control methods for improving the effectiveness of driver assistance systems is disclosed where the driver assistance systems can generate and send requests to a suspension control unit (SCU) of the suspension system to actuate (e.g., close) one or more comfort valves in the suspension system to increase the roll stiffness and/or pitch stiffness of the suspension system when the driver assistance systems are taking corrective action. As part of a two-way communication between the suspension control unit (SCU) and the driver assistance systems, the suspension control unit (SCU) communicates target stiffnesses and/or calculated effective stiffnesses to the driver assistance systems, which is used to update the vehicle stability models used by the driver assistance systems.

公开(公告)号：US20230111977A1

公开(公告)日：2023-04-13

申请号：US17499693

申请日：2021-10-12

Applicant: DRiV Automotive Inc.

Inventor： Peter BOON ,  Bert VANDERSMISSEN ,  Frank GOMMANS

IPC: B60G17/0165 ,  B60G17/015 ,  B60G17/019

Abstract: A suspension system and associated control methods for improving comfort by disabling passive pitch stiffness in the suspension system by holding open electromechanical comfort valves positioned in a manifold assembly of the suspension system. The manifold comfort valves are held open to disable the passive pitch stiffness of the suspension system if the vehicle is traveling down a rough road or if the vehicle is approaching a discrete road event like a pot-hole or speed bump. Deactivation of the passive pitch stiffness of the suspension system is determined based on road classification information, saved road events, and/or real-time vehicle data from on-board sensors. The suspension system therefore reduces pitch angles during pitch events induced by inertial forces caused by driver inputs and disables the pitch stiffness when the pitch event is caused by road inputs.

公开(公告)号：US20230110337A1

公开(公告)日：2023-04-13

申请号：US17499650

申请日：2021-10-12

Applicant: DRiV Automotive Inc.

Inventor： Nandish CALCHAND ,  Bert VANDERSMISSEN ,  Stein SLOOTMAEKERS ,  Peter BOON ,  Monzer AL SAKKA ,  Kylian PRAET

IPC: B60G17/0185 ,  B60G13/14

Abstract: 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 of the suspension system 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 of the suspension system in a first direction and increase a pressure of hydraulic fluid in a first portion of the suspension system including an accumulator, where the valve control module is configured to decrease the pressure in the first portion after the increase; and a diagnosis module configured to selectively diagnose a fault in the accumulator based on a pressure during the decrease.