User selected settings for vehicle with pneumatic suspension and tire inflation system

Patent metadata

Field	Value
Publication number	US-11001118-B2
Application number	US-201816021968-A
Country	US
Kind code	B2
Filing date	Jun 28, 2018
Priority date	Feb 9, 2016
Publication date	May 11, 2021
Grant date	May 11, 2021

Abstract

A method of setting the rides height of the air springs and air pressures of the tires, including receiving a user selected setting or preprogrammed ride height settings; sensing a ride height of, and air pressure within, each of the air springs; determining the weight of the vehicle based on the sensed ride height and air pressure within each of the air springs; providing specified ride heights for the left and right front and rear air springs; determining specified air pressures for the left and right front and rear tire inflators, based upon the determined weight of the vehicle and selected setting; inflating the left and right front and rear air springs to the specified ride heights; and inflating the left and right front and rear tires to the specified air pressures.

First claim

We claim:

1. A method of setting ride heights and air pressures of air springs in a vehicle having an air spring inflation system, including:
providing an air spring inflation system including a control system, left and right side front air springs each monitored by an air pressure sensor in communication with the control system to sense air pressures within the left and right side front air springs, and each having an associated ride height sensor in communication with the control system to sense the ride heights of the left and right side front air springs, left and right side rear air springs each monitored by an air pressure sensor in communication with the control system to sense air pressures within the left and right side rear air springs, and each having an associated ride height sensor in communication with the control system to sense the ride heights of the left and right side rear air springs, an air spring air pressure manifold, a supply of pressurized air in communication with the air spring air pressure manifold, one or more air conduits extending from the air spring air pressure manifold to the left and right side front air springs, one or more air conduits extending from the air spring air pressure manifold to the left and right side rear air springs, a user interface in communication with the control system, wherein the user interface includes a plurality of user selectable settings;
selecting a setting on the user interface;
receiving air pressure and ride height readings from the left and right side front air springs and air pressure and ride height readings from the left and right side rear air springs from the air pressure and ride height sensors;
determining a weight of a vehicle on which the air spring and tire inflation system is positioned based on the received air pressure and ride height readings;
determining, based on the selected setting, ride height settings for the left and right side front air springs and ride height settings for the left and right side rear air springs;
communicating to the air spring air pressure manifold the determined ride height settings for the left and right side front air springs and the determined ride height settings for the left and right side rear air springs;
using the air spring air pressure manifold to inflate the left and right side front air springs to the determined ride height settings for the left and right side front air springs, and using the air spring air pressure manifold to inflate the left and right side rear air springs to the determined ride height settings for the left and right side rear air springs;
wherein the air springs are initially inflated with a low pressure air supply of 120 psi or less extending through the air spring air pressure manifold; and
wherein the air springs are then inflated with a high pressure air supply of 150 psi or more extending through the air spring air pressure manifold.

2. The method of claim 1 , wherein the ride height for the left and right side front air springs, and the ride height for the left and right side rear air springs, are automatically set by the system without any human action.

3. The method of claim 1 , wherein the left and right side front air springs, and the left and right side rear air springs, each comprise a cylinder shock assembly having:
a damper having a first end and a second end, wherein the first end includes a first mount and the second end of the damper extends into an air cylinder float;
the damper includes a housing defining a cavity, the damper having a rod positioned in the air cylinder float, the rod having a first end positioned within the cavity of the damper and a second end affixed to an end cap that is connected to a first end of the air cylinder float;
a first piston affixed to the first end of the rod within the cavity of the damper,
a second piston affixed to the damper, the second piston having one or more seals on an outer surface thereof that sealingly engage an inner surface of the air cylinder float;
wherein the air cylinder float is a solid member that does not expand as the air pressure within increases during compression.

4. The method of claim 3 , wherein at a designed vehicle ride height the air pressure within the air cylinder floats is 175 psi or more.

5. A method of setting ride heights and air pressures of air springs in a vehicle having an air spring inflation system, including:
providing an air spring inflation system including a control system, left and right side front air springs each monitored by an air pressure sensor in communication with the control system to sense air pressures within the left and right side front air springs, and each having an associated ride height sensor in communication with the control system to sense the ride heights of the left and right side front air springs, left and right side rear air springs each monitored by an air pressure sensor in communication with the control system to sense air pressures within the left and right side rear air springs, and each having an associated ride height sensor in communication with the control system to sense the ride heights of the left and right side rear air springs,—an air spring air pressure manifold, a supply of pressurized air in communication with the air spring air pressure manifold, one or more air conduits extending from the air spring air pressure manifold to the left and right side front air springs, one or more air conduits extending from the air spring air pressure manifold to the left and right side rear air springs, a user interface in communication with the control system, wherein the user interface includes a plurality of user selectable settings;
selecting a setting on the user interface;
receiving air pressure and ride height readings from the left and right side front air springs and air pressure and ride height readings from the left and right side rear air springs from the air pressure and ride height sensors;
determining, based on the selected setting, ride height settings for the left and right side front air springs and ride height settings for the left and right side rear air springs;
communicating to the air spring air pressure manifold the determined ride height settings for the left and right side front air springs and the determined ride height settings for the left and right side rear air springs;
using the air spring air pressure manifold to inflate the left and right side front air springs to the determined ride height settings for the left and right side front air springs, and to inflate the left and right side rear air springs to the determined ride height settings for the left and right side rear air springs;
wherein the air springs are initially inflated with a low pressure air supply of 120 psi or less extending through the air spring air pressure manifold; and
wherein the air springs are then inflated with a high pressure air supply of 150 psi or more extending through the air spring air pressure manifold.

6. The method of claim 5 , further including adjusting the ride height of one of the left or right front or rear air springs in response to a signal received from a wheel speed sensor for increasing the traction of the vehicle.

Assignees

• Hendrickson Usa Llc

Inventors

• Batsch Christopher J
• Cantagallo Christopher E
• Ketchel Bradley S

Classifications

• B60C23/00372

  characterised by fluid diagrams · CPC title

• B60C23/00354

  Details of valves · CPC title

• B60G17/0523

  Regulating distributors or valves for pneumatic springs · CPC title

• B60G17/0155

  pneumatic unit · CPC title

• B60G2800/87

  System configuration based on vehicle type or model · CPC title