US 12,589,624 B2 · Pitch and roll control system for a vehicle

Abstract

A vehicle includes a suspension system having a first damper, a second damper, valves and a controller. Each of the first damper and the second damper include a housing and a piston sealingly interfaced with an inner diameter of the housing, dividing the damper into a first and second chamber. Each valve controls flow rate of fluid entering or exiting at least one of the first and second chamber of at least one of the first damper and the second damper. The controller controls the valves to control extension or compression of at least one of the first damper and the second damper based on at least one of a degree of roll of the vehicle during a turn of the vehicle and a degree of pitch of the vehicle during acceleration of the vehicle or a degree of pitch of the vehicle during deceleration of the vehicle.

Claims20

Dependent claims

A vehicle comprising:

a suspension system comprising:
a plurality of dampers configured undergo extension and compression;
and
a plurality of valves configured to control at least one of the extension or the compression of the plurality of dampers by controlling a fluid flow rate of the plurality of dampers;
and
a controller configured to operate at least one of the plurality of valves to control the extension or the compression of at least one of the plurality of dampers to achieve at least one of a desired roll or a desired pitch of the vehicle, the controller configured to control the plurality of valves based on a comparison between an acceleration or yaw rate and an acceleration threshold or a yaw rate threshold to achieve the desired roll or the desired pitch of the vehicle.

3 more elements

A method for improving ride stability of a vehicle, the method comprising:

receiving one or more inputs relating to a condition of the vehicle;
determining a state of the vehicle based on the one or more inputs relating to the condition of the vehicle;
controlling one or more of a plurality of dampers of the vehicle to achieve a desired roll or a desired pitch of the vehicle by controlling one or more of a plurality of valves, the plurality of dampers configured to undergo extension and compression, and the plurality of valves configured to control at least one of the extension or the compression of one of the plurality of dampers by controlling a fluid flow rate of one of the plurality of dampers;
wherein controlling the one or more of the plurality of dampers of the vehicle comprises at least one of:
restricting an extension or compression of one or more inside dampers of the plurality of dampers during a turn of the vehicle;
restricting an extension or compression of one or more front dampers of the plurality of dampers during acceleration of the vehicle;
or
restricting an extension or compression of one or more rear dampers of the plurality of dampers during deceleration of the vehicle.

5 more elements

A suspension system for a vehicle, the suspension system comprising:

a plurality of dampers configured undergo extension and compression and a plurality of valves configured to control at least one of the extension or the compression of one of the plurality of dampers by controlling a fluid flow rate of one of the plurality of dampers;
and
a controller configured to adjust, based on a comparison between a dynamic property of the vehicle and a threshold for the dynamic property, an operation of at least one of the plurality of valves to control the at least one of the extension or the compression of at least one of the plurality of dampers to achieve at least one of a desired roll or a desired pitch by adjusting an operation of one or more of the plurality of valves to adjust an extension or compression damping value of one or more dampers of the plurality of dampers or by adjusting an operation of one or more of the plurality of valves to adjust a fluid flow rate of the one or more dampers of the plurality of dampers.

Dependencies are inferred from the claim text.

Facts

Application

18/604,165Filed 13 Mar 2024 · continuation

Priority

21 Dec 2018

Published

US 2024/0217298 A14 Jul 2024

Granted

31 Mar 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification33 codes

B60G 17/0162
Characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input: mainly during a…
B60G 21/073
Fluid: between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
B60G 13/08
Of fluid type: hydraulic
B60G 17/016
The regulating means comprising electric or electronic elements: characterised by their responsiveness, when the vehicle is travelling, to…

Family

Application62/784,153Us provisional application · filed 21 Dec 2018

Application62/784,174Us provisional application · filed 21 Dec 2018

Application16/723,380Parent of this continuation · filed 20 Dec 2019

Application18/101,445Parent of this continuation · filed 25 Jan 2023

US 2024/0217298 A1Pre-grant publication · published 4 Jul 2024

US 11,993,121 B1Parent of this continuation

US 11,584,185 B1Parent of this continuation

US 12,589,624 B2This patent

From the US filing history. Foreign family members aren’t listed.

Pitch and roll control system for a vehicle

Life of this patent

Pitch and roll control system for a vehicle

Life of this patent

Abstract

Claims20