Tire inflation system and method of control
First Claim
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1. A method of controlling a tire inflation system comprising:
- checking an inflation pressure of a tire;
categorizing a type of pressure drop of the tire when the inflation pressure is less than a target tire pressure;
inflating the tire when the inflation pressure of the tire is less than the target tire pressure; and
adjusting a tire pressure sampling interval based on the type of pressure drop, wherein the type of pressure drop is a minor pressure drop when the tire is inflated to the target tire pressure within a threshold inflation time, the type of pressure drop is a moderate pressure drop when the tire is inflated to the target tire pressure and a time to inflate the tire to the target tire pressure exceeds the threshold inflation time, and a driver is alerted when there is the moderate pressure drop, but is not alerted when there is the minor pressure drop.
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Abstract
A tire inflation system and a method of control. An inflation pressure of a tire may be checked when a tire pressure sampling interval has elapsed. The tire pressure sampling interval may be adjusted based on a type of pressure drop when the inflation pressure is less than a target tire pressure.
26 Citations
19 Claims
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1. A method of controlling a tire inflation system comprising:
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checking an inflation pressure of a tire; categorizing a type of pressure drop of the tire when the inflation pressure is less than a target tire pressure; inflating the tire when the inflation pressure of the tire is less than the target tire pressure; and adjusting a tire pressure sampling interval based on the type of pressure drop, wherein the type of pressure drop is a minor pressure drop when the tire is inflated to the target tire pressure within a threshold inflation time, the type of pressure drop is a moderate pressure drop when the tire is inflated to the target tire pressure and a time to inflate the tire to the target tire pressure exceeds the threshold inflation time, and a driver is alerted when there is the moderate pressure drop, but is not alerted when there is the minor pressure drop. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A tire inflation system comprising:
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a pressurized gas source that is fluidly connected to a tire that has a tire valve disposed on a wheel upon which the tire is mounted and configured to supply a pressurized gas; 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; and a pressure sensor for detecting pressure indicative of an inflation pressure of the tire; wherein the inflation pressure of the tire is determined by opening the outlet valve and the inlet valve to deliver a pulse of pressurized gas to the tire valve, wherein the pulse of pressurized gas does not open the tire valve when the inflation pressure of the tire exceeds a pressure of the pulse, the inflation pressure is determined when a tire pressure sampling interval has elapsed, and the tire pressure sampling interval is adjusted based on a type of pressure drop when the inflation pressure is less than a target tire pressure, wherein the tire is inflated when the inflation pressure of the tire is less than the target tire pressure, the type of pressure drop is a minor pressure drop when the tire is inflated to the target tire pressure within a threshold inflation time, the type of pressure drop is a moderate pressure drop when the tire is inflated to the target tire pressure and a time to inflate the tire to the target tire pressure exceeds the threshold inflation time, and a driver is alerted when there is the moderate pressure drop and is not alerted when there is the minor pressure drop. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification