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US 12,752,586 B1Granted
Air suspension assembly
AssigneeGM Global Technology Operations LLC
InventorsMichael A. Ryba, Alexander Doss
Life of this patent
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Abstract
A suspension assembly includes a first damper assembly including a first chamber having a first pressure, a second damper assembly including a second chamber having a second pressure, the second chamber having a first portion fluidly connected to the first chamber and a second portion fluidly isolated from the first chamber, and one or more fluid pressure devices fluidly connected to the second chamber and configured to adjust the second pressure in the second chamber.
Claims20
A system comprising:
- one or more controllers;
- and
- a suspension assembly comprising:
- a first damper assembly comprising a first chamber casing defining first chamber having a first pressure;
- a second damper assembly comprising a second chamber casing defining a second chamber having a second pressure, the second chamber having a first portion fluidly connected to the first chamber and a second portion fluidly isolated from the first chamber;
- and
- one or more fluid pressure devices fluidly connected to the second chamber and configured to adjust the second pressure in the second chamber,
- wherein the one or more controllers is configured to control the one or more fluid pressure devices to adjust the second pressure in the second chamber,
- wherein the one or more controllers is configured to set a first ride frequency mode and control the second pressure to correspond to the first ride frequency mode, and
- wherein the one or more controllers is configured to set a second ride frequency mode and control the second pressure to correspond to the second ride frequency mode.
7 more elements
A vehicle comprising:
- a vehicle body;
- a wheel;
- a wheel support structure that rotatably supports the wheel;
- one or more controllers;
- and
- a suspension assembly that couples the vehicle body and the wheel support structure, the suspension assembly, comprising:
- a first damper assembly comprising a first chamber casing defining a first chamber having a first pressure;
- a second damper assembly comprising a second chamber casing defining a second chamber having a second pressure, the second chamber having a first portion fluidly connected to the first chamber and a second portion fluidly isolated from the first chamber;
- and
- one or more fluid pressure devices fluidly connected to the second chamber and configured to adjust the second pressure in the second chamber,
- wherein the one or more controllers is configured to control the one or more fluid pressure devices to adjust the second pressure in the second chamber,
- wherein the one or more controllers is configured to set a first ride frequency mode and control the second pressure to correspond to the first ride frequency mode, and
- wherein the one or more controllers is configured to set a second ride frequency mode and control the second pressure to correspond to the second ride frequency mode.
10 more elements
A vehicle comprising:
- a vehicle body;
- a wheel;
- a wheel support structure that rotatably supports the wheel;
- one or more controllers;
- and
- a suspension assembly that couples the vehicle body and the wheel support structure, the suspension assembly comprising:
- a first damper assembly comprising a first chamber casing defining a first chamber having a first pressure;
- a second damper assembly comprising a second chamber casing defining a second chamber having a second pressure, the second chamber having a first portion fluidly connected to the first chamber and a second portion fluidly isolated from the first chamber;
- a fluid conduit fluidly connecting the first chamber to the first portion of the second chamber;
- and
- one or more fluid pressure devices fluidly connected to the second chamber and configured to adjust the second pressure in the second chamber,
- wherein the one or more fluid pressure devices is fluidly connected to the first chamber and configured to adjust the first pressure in the first chamber,
- wherein the first damper assembly comprises a first piston assembly and the second damper assembly comprises a second piston assembly,
- wherein the first piston assembly comprises a first chamber casing that defines the first chamber, a first piston fixed to the first chamber casing, and a first piston cylinder fixed to the wheel support structure and movable with respect to the first piston,
- wherein the first piston cylinder is configured to move into the first chamber due to forces transmitted from the wheel to increase the first pressure of the first chamber,
- wherein the first portion of the second chamber is an upper chamber and the second portion of the second chamber is a lower chamber,
- wherein the second piston assembly comprises a second piston fluidly isolating the upper chamber and the lower chamber,
- wherein the second piston is movable toward the second portion due to the first pressure in the first portion to increase the second pressure in the second portion,
- wherein the one or more controllers is configured to control the one or more fluid pressure devices to adjust the second pressure in the second chamber,
- wherein the one or more controllers is configured to set a first ride frequency mode and control the second pressure to correspond to the first ride frequency mode,
- wherein the one or more controllers is configured to set a second ride frequency mode and control the second pressure to correspond to the second ride frequency mode, and
- wherein the one or more controllers is configured to set any intermediate ride frequency mode between the first ride frequency mode and the second ride frequency mode by adjusting the second pressure.
19 more elements
Dependencies are inferred from the claim text.