VEHICLE USING TIRE TEMPERATURE TO ADJUST ACTIVE CHASSIS SYSTEMS

• US 20130006440A1
• Filed: 06/30/2011
• Published: 01/03/2013
• Est. Priority Date: 06/30/2011
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: PETRUCCI, MICHAEL G., MACDONALD, ALEXANDER J.
• Granted Patent: US 8,718,868 B2
• Time in Patent Office: Days
• US Class Current: 701/1
• CPC Class Codes: B60G 17/019 characterised by the type of sensor or the arrangement thereof B60G17/01941 takes precedence
• CPC Class Codes: B60G 17/0195 characterised by the regulation being combined with other vehicle control systems conjoint control of vehicle sub-units including control of suspension systems B60W10/22
• CPC Class Codes: B60G 2400/52 in tyre
• CPC Class Codes: B60G 2500/00 Indexing codes relating to the regulated action or device
• CPC Class Codes: B60K 28/10 responsive to conditions relating to the vehicle
• CPC Class Codes: B60T 2260/06 Active Suspension System
• CPC Class Codes: B60T 8/172 Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters B60T8/17551 takes precedence
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2520/125 Lateral acceleration
• CPC Class Codes: B60W 2540/30 Driving style
• CPC Class Codes: B60W 30/02 Control of vehicle driving stability
• CPC Class Codes: B62D 6/007 adjustable by the driver, e.g. sport mode

Abstract

In accordance with exemplary embodiments, a system and method are provided for using tire temperature for dynamically adjusting active chassis systems of a vehicle. The method comprises determining a tire temperature value for at least one tire of a vehicle using at least one sensor and adjusting at least one active chassis system of the vehicle responsive to the tire temperature value. The system comprises a chassis having an engine providing power to tires to propel the vehicle. At least one active chassis system is configured to control braking, power applied or control inputs to the tires, and a controller is configured to determine a tire temperature value for adjusting the at least one active chassis systems. The at least one active chassis systems are adjusted responsive to the tire temperature value provided by the controller to control braking, power applied or control inputs to the tires.

Claims

1. A method, comprising:

determining a tire temperature value for at least one tire of a vehicle using at least one sensor;

adjusting at least one active chassis system of the vehicle responsive to the tire temperature value.

2. The method of claim 1, wherein adjusting further comprises adjusting the at least one active chassis system of the following group of active chassis systems:

antilock breaking system;

traction control system;

electronic stability control;

electronic all-wheel drive system;

electronically controlled front, center and rear driveline coupling;

electronic power steering system;

electronic suspension system;

responsive to the tire temperature value.

3. The method of claim 1, wherein determining comprises initially estimating the tire temperature value via a controller receiving data from the at least one sensor.

4. The method of claim 1, which includes classifying the tire temperature value into one of a plurality of predetermined temperature ranges to provide a tire temperature state.

5. The method of claim 4, which includes changing the tire temperature state responsive to detecting aggressive driving of the vehicle.

6. The method of claim 5, wherein detecting aggressive driving is based upon monitoring vehicle speed and lateral acceleration.

7. The method of claim 1, which includes making a determination of initial tire temperature value using vehicle parameters of intake air temperature, coolant temperature and engine off time.

8. The method of claim 7, where determining the tire temperature valve comprises comparing the initial tire temperature value to tire temperature data from a tire pressure monitor.

9. The method of claim 8, which includes selecting a default tire temperature value if the initial tire temperature value and tire temperature data from the tire pressure monitor do not match.

10. A method, comprising:

determining an initial tire temperature estimate for at least one tire of a vehicle using operating parameters of a vehicle;

measuring an initial tire temperature value from at least one sensor;

determining validity of the initial tire temperature estimate and initial tire temperature value;

determining a tire temperature state from the initial tire temperature estimate and initial tire temperature value when validity is determined;

selecting a default value for the tire temperature state when validity of the initial tire temperature estimate and initial tire temperature value is not determined; and

adjusting at least one active chassis system of the vehicle responsive to the tire temperature state.

11. The method of claim 10, wherein adjusting further comprises adjusting the at least one active chassis system of the following group of active chassis systems:

antilock breaking system;

traction control system;

electronic stability control;

electronic all-wheel drive system;

electronically controlled front, center and rear driveline coupling;

electronic power steering system;

electronic suspension system;

responsive to the tire temperature state.

12. The method of claim 10, determining the tire temperature state further comprises classifying the tire temperature value into one of a plurality of predetermined temperature ranges to provide the tire temperature state.

13. The method of claim 12, which includes changing the tire temperature state responsive to detecting aggressive driving of the vehicle.

14. The method of claim 13, wherein detecting aggressive driving is based upon monitoring vehicle speed and lateral acceleration.

15. A vehicle, comprising:

a chassis having an engine providing power to tires to propel the vehicle;

at least one active chassis system configured to control braking, power applied or control inputs to the tires; and

a controller coupled to the engine and the at least one active chassis system and configured to determine a tire temperature value for adjusting the at least one active chassis system;

wherein the at least one active chassis systems are adjusted responsive to the tire temperature value to control the braking, power applied or control inputs to the tires.

16. The vehicle of claim 15, wherein the at least one active chassis system comprises one or more of the following group of active chassis system:

antilock breaking system;

traction control system;

electronic stability control;

electronic all-wheel drive system;

electronically controlled front, center and rear driveline coupling;

electronic power steering;

or electronic suspension systems.

17. The vehicle of claim 15, which includes classifying the tire temperature value into one of a plurality of predetermined temperature ranges to provide a tire temperature state.

18. The vehicle of claim 17, which includes changing the tire temperature state responsive to detecting aggressive driving of the vehicle.

19. The vehicle of claim 18, wherein detecting aggressive driving is based upon monitoring vehicle speed and lateral acceleration.

20. The vehicle of claim 15, wherein the controller is further configured to determine validity of the tire temperature value and select a default tire temperature value when the tire temperature value is determined not to be valid.