Tire inflation system and method of control
First Claim
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1. A method of controlling inflation of a tire comprising:
- determining a tire pressure by;
providing a pulse of pressurized gas to a tire valve, wherein the pulse of pressurized gas does not open the tire valve when the tire pressure is greater than or equal to a target tire pressure;
measuring a pressure of the pulse of pressurized gas to obtain a measured pressure; and
comparing the pressure of the pulse of pressurized gas to a pressure of a previous pressure pulse of pressurized gas to determine whether there is confidence that the measured pressure is accurate when the pressure is less than the target tire pressure.
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Abstract
A system and method of controlling inflation of a tire. Tire pressure may be determined by providing pulses of pressurized gas to a tire valve. The pulses of pressurized gas may not open the tire valve when the tire pressure is greater than or equal to the target tire pressure, thereby inhibiting overinflation.
31 Citations
20 Claims
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1. A method of controlling inflation of a tire comprising:
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determining a tire pressure by; providing a pulse of pressurized gas to a tire valve, wherein the pulse of pressurized gas does not open the tire valve when the tire pressure is greater than or equal to a target tire pressure; measuring a pressure of the pulse of pressurized gas to obtain a measured pressure; and comparing the pressure of the pulse of pressurized gas to a pressure of a previous pressure pulse of pressurized gas to determine whether there is confidence that the measured pressure is accurate when the pressure is less than the target tire pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of controlling inflation of a tire comprising:
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determining a first pressurized gas pulse duration time; providing a first pulse of pressurized gas from a pressurized gas source to the tire for the first pressurized gas pulse duration time; measuring a pressure of pressurized gas associated with the first pulse; determining a second pressurized gas pulse duration time; providing a second pulse of pressurized gas from the pressurized gas source to the tire for the second pressurized gas pulse duration time that differs from the first pressurized gas pulse duration time; measuring a pressure of pressurized gas associated with the second pulse; and comparing the pressure associated with the first pulse with the pressure associated with the second pulse; wherein the tire is underinflated when the pressure associated with the first pulse is within a threshold amount of the pressure associated with the second pulse. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A tire inflation system comprising:
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a pressurized gas source that provides a pressurized gas to a tire; an outlet valve that controls flow of pressurized gas to the tire; an inlet valve that controls flow of pressurized gas to the outlet valve; a first pressure sensor that detects pressure of the pressurized gas provided by the pressurized gas source; a second pressure sensor disposed between the inlet valve and the outlet valve; and an electronic controller that controls operation of the tire inflation system by opening the outlet valve and the inlet valve to deliver a pulse of pressurized gas from the pressurized gas source, closing the inlet valve after a current pressurized gas pulse duration time has elapsed, waiting for a predetermined period of time to allow the pressure to stabilize between the inlet valve and the tire, and measuring a pulse pressure of the pulse of pressurized gas with the second pressure sensor; wherein the measured pressure is indicative of a tire pressure when the pulse pressure is less than a target tire pressure and the measured pressure is within a threshold amount of a pressure value of a previous pressure pulse. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification