Air suspension system and control method thereof

Patent metadata

Field	Value
Publication number	US-9272597-B2
Application number	US-201414327309-A
Country	US
Kind code	B2
Filing date	Jul 9, 2014
Priority date	Oct 10, 2013
Publication date	Mar 1, 2016
Grant date	Mar 1, 2016

Abstract

Disclosed is a control method of an air suspension system includes: sensing an error of a tire or an air spring; and controlling the height of a peripheral air spring based on the tire or the air spring in which the error occurs.

First claim

What is claimed is:

1. A control method of an air suspension system, comprising:
generating a signal indicative of an error of a first tire or a first air spring; and
increasing heights of second and third air springs associated with second and third tires, respectively, the second and third tires being adjacent to the first tire or the first air spring, to adjust a vehicle height at the first tire or the first air spring based on the signal.

2. The method of claim 1 , further comprising comparing pressures of respective tires or air springs, wherein the tires include the first, second, and third tires and the air springs include the first, second, and third air springs.

3. The method of claim 1 , further comprising:
comparing vehicle height output values of respective wheels; and
measuring an inclination of a vehicle.

4. The method of claim 1 , further comprising:
after generating the signal of the error of the first tire or the first air spring, determining whether a condition for adjusting the vehicle height is satisfied.

5. The method of claim 4 , wherein the condition for adjusting the vehicle height is satisfied when a vehicle continues to stop for a predetermined time after the signal is generated.

6. The method of claim 5 , wherein the predetermined time is 2 minutes.

7. The method of claim 4 , wherein the condition for adjusting the vehicle height is satisfied when an execution signal is input after the signal is generated.

8. The air suspension system of claim 1 , wherein the second tire is disposed adjacent to the first tire in a longitudinal direction of a vehicle and the third tire is disposed adjacent to the first tire in a direction perpendicular to the longitudinal direction of the vehicle.

9. The method of claim 1 , wherein each of the heights of the second and third air springs associated with the second and third tires is increased to a maximum height.

10. An air suspension system, comprising:
a sensor generating a signal indicative of an error of a first tire; and
a controller increasing heights of second and third air springs associated with second and third tires, respectively, the second and third tires being adjacent to the first tire, to adjust a vehicle height at the first tire based on the signal.

11. The air suspension system of claim 10 , wherein the sensor includes a tire pressure measurement system (TPMS) sensor measuring a tire pressure.

12. The air suspension system of claim 10 , wherein the sensor includes:
a vehicle height sensor associated with each wheel to measure a corresponding vehicle height; and
a G sensor measuring an inclination of a vehicle.

13. The air suspension system of claim 10 , wherein the controller adjusts the vehicle height at the first tire when a vehicle continues to stop for a predetermined time after the signal is generated.

14. The air suspension system of claim 13 , wherein the predetermined time is 2 minutes.

15. The air suspension system of claim 10 , wherein the controller adjusts the vehicle height at the first tire when an execution signal is input after the signal generated.

16. The method of claim 10 , wherein the second tire is disposed adjacent to the first tire in a longitudinal direction of a vehicle and the third tire is disposed adjacent to the first tire in a direction perpendicular to the longitudinal direction of the vehicle.

17. The air suspension system of claim 10 , wherein the controller increases each of the heights of the second and third air springs associated with the second and third tires to a maximum height.

Assignees

• Hyundai Mobis Co Ltd

Inventors

• Lee Seung Chul

Classifications

• B60G2202/152

  Pneumatic spring · CPC title

• B60G2800/80

  Detection or control after a system or component failure · CPC title

• B60G2400/051

  Angle · CPC title

• B60G2400/252

  vertical · CPC title

• B60G2400/204

  Vehicle speed · CPC title