System and method for warm tire fill pressure adjustment

• US 7,216,532 B2
• Filed: 04/19/2005
• Issued: 05/15/2007
• Est. Priority Date: 04/19/2005
• Status: Expired due to Fees

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations Incorporated (Motors Liquidation Co. GUC Trust)
• Inventors: Rimkus, Robert A, Rosa, J. David
• Primary Examiner(s): THOMPSON, JEWEL VERGIE
• Application Number:
  US11/109,269
• Publication Number:
  US 20060235652A1
• Time in Patent Office: 756 Days
• Field of Search: 731/46, 737/08, 731/462, 731/463, 731/464, 731/465, 737/00, 340/442
• US Class Current: 73/146
• CPC Class Codes: B60C 23/0408 transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
• CPC Class Codes: B60C 23/0476 Temperature compensation of measured pressure values

Abstract

A method is provided for recommending proper tire pressure using a tire pressure recommendation system having a processor. The method comprises obtaining a cold placard tire pressure (P_Pl) for a cold placard air temperature (T_Pl) and obtaining a measured outside air temperature (T_Outside). The cold placard tire pressure (P_Pl), the cold placard air temperature (T_Pl) and the measured outside air temperature (T_Outside) are entered into the tire pressure recommendation system. The recommended tire pressure (P_Re) is then calculated with the processor for the measured outside air temperature (T_Outside), the recommended tire pressure (P_Re) being based upon the cold placard tire pressure (P_Pl).

Claims

1. A method for recommending proper tire pressure using a tire pressure recommendation system having a processor, comprising:

obtaining a cold placard tire pressure (P_Pl) for a cold placard air temperature (T_Pl);

obtaining a measured outside air temperature (T_Outside);

entering the cold placard tire pressure (P_Pl), the cold placard air temperature (T_Pl) and the measured outside air temperature (T_Outside) into the tire pressure recommendation system; and

calculating a recommended tire pressure (P_Re) with the processor for the measured outside air temperature (T_Outside), the recommended tire pressure (P_Re) being based upon the cold placard tire pressure (P_Pl);

wherein

the recommended tire pressure (P_Re) is;

2. The method of claim 1, farther comprising communicating the recommended tire pressure (P_Re) on a display.

3. The method of claim 1, further comprising:

detecting when the tire has reached the recommended tire pressure (P_Re); and

generating feedback indicating when the tire has been filled to the recommended tire pressure (P_Re).

4. The method of claim 3, wherein the feedback is done with a feedback element coupled to the tire pressure recommendation system.

5. The method of claim 1, wherein obtaining a measured outside air temperature (T_Outside) is done automatically by a thermometer coupled to the tire pressure recommendation system.

6. A method for recommending proper tire pressure using a tire pressure recommendation system having a processor, comprising:

obtaining a cold placard tire pressure (P_Pl) for a cold placard air temperature (T_Pl);

obtaining a measured outside air temperature (T_Outside);

entering the cold placard tire pressure (P_Pl), the cold placard air temperature and (T_Pl) and the measured outside air temperature (T_Outside) into the tire pressure recommendation system; and

calculating a recommended tire pressure (P_Re) with the processor for the measured outside air temperature (T_Outside), the recommended tire pressure (P_Re) being based upon the cold placard tire pressure (P_Pl), wherein the recommended tire pressure (P_Re) is;

7. A method for recommending proper tire pressure using a tire pressure recommendation system having a processor, comprising:

obtaining a cold placard tire pressure (P_Pl) for a cold placard air temperature (T_Pl);

obtaining a measured current tire temperature (T_Tire);

entering the cold placard tire pressure (P_Pl), the cold placard air temperature (T_Pl) and the measured current tire temperature (T_Tire) into the tire pressure recommendation system; and

calculating a recommended tire pressure (P_Re) with the processor for the current tire temperature (T_Tire), the recommended tire pressure (P_Re) being based upon the cold placard tire pressure (P_Pl);

wherein the recommended tire pressure (P_Re);

8. The method of claim 7, farther comprising communicating the recommended tire pressure (P_Re) on a display.

9. The method of claim 7, further comprising:

detecting when the tire has reached the recommended tire pressure (P_Re); and

generating feedback indicating when the tire has been filled to the recommended tire pressure (P_Re).

10. The method of claim 9, wherein the feedback is done with a feedback element coupled to the tire pressure recommendation system.

11. The method of claim 7, wherein obtaining a measured current tire temperature (T_Tire) is done automatically by a tire sensor coupled to the tire pressure recommendation system.

12. A method for recommending proper tire pressure using a tire pressure recommendation system having a processor, comprising:

obtaining a cold placard tire pressure (P_Pl) for a cold placard air temperature (T_Pl);

obtaining a measured current tire temperature (T_Tire);

entering the cold placard tire pressure (P_Pl), the cold placard air temperature (T_Pl) and the measured current tire temperature (T_Tire) into the tire pressure recommendation system; and

calculating a recommended tire pressure (P_Re) with the processor for the current tire temperature (T_Tire), the recommended tire pressure (P_Re) being based upon the cold placard tire pressure (P_Pl), wherein the recommended tire pressure (P_Re) is;

13. A tire pressure recommendation system, comprising:

a memory element for storing data indicative of a cold placard tire pressure for a cold placard air temperature;

a thermometer capable of measuring outside air temperature near a tire;

a tire sensor positioned inside the tire, the tire sensor being capable of measuring tire temperature inside the tire;

processing logic configured to generate a recommended tire pressure for the measured outside air temperature, the recommended tire pressure being based upon the cold placard tire pressure, the outside air temperature, and the tire temperature inside the tire; and

a display for communicating the recommended tire pressure.

14. The system of claim 13, further comprising a feedback element coupled to the processing logic and configured to indicate when the tire has been filled to the recommended tire pressure.

15. A method for recommending proper tire pressure using a tire pressure recommendation system having a processor, comprising:

obtaining a cold placard tire pressure (P_Pl) for a cold placard air temperature (T_Pl);

obtaining a measured current tire temperature (T_Tire);

obtaining a measured outside air temperature (T_Outside);

entering the cold placard tire pressure (P_Pl), the cold placard air temperature (T_Pl), the measured outside air temperature (T_Outside), and the measured current tire temperature (T_Tire) into the tire pressure recommendation system; and

calculating a recommended tire pressure (P_Re) with the processor for the current tire temperature (T_Tire), the recommended tire pressure (P_Re) being based upon the cold placard tire pressure (P_Pl);

wherein

the recommended tire pressure (P_Re) is;

16. A method for recommending proper tire pressure using a tire pressure recommendation system having a processor, comprising:

obtaining a cold placard tire pressure (P_Pl) for a cold placard air temperature (T_Pl);

obtaining a measured current tire temperature (T_Tire);

obtaining a measured outside air temperature (T_Outside);

entering the cold placard tire pressure (P_Pl), the cold placard air temperature (T_Pl), the measured outside air temperature (T_Outside), and the measured current tire temperature (T_Tire) into the tire pressure recommendation system; and

calculating a recommended tire pressure (P_Re) with the processor for the current tire temperature (T_Tire), the recommended tire pressure (P_Re) being based upon the cold placard tire pressure (P_Pl);

wherein

the recommended tire pressure (P_Re) is;