Target tire pressure learning method
First Claim
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1. A method for controlling a tire pressure in a tire maintained by a tire pressure management system, comprising the steps of:
- supplying pressurized fluid from a fluid source to a conduit disposed between said fluid source and said tire for a first predetermined time period sufficient to open a wheel valve disposed at one end of an axle supporting a wheel on which said tire is mounted;
measuring a first conduit pressure in said conduit with a sensor disposed in said conduit following a second predetermined time period;
storing said first conduit pressure as a target tire pressure; and
, maintaining said tire pressure in said tire equal to said target tire pressure.
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Abstract
A target tire pressure learning method wherein tire pressure is ascertained via a central pressure sensor. The method of learning a target tire pressure for a tire maintained by a tire pressure maintenance system, having conduit assemblies for conducting fluid to and/or from the tire and a pressure sensor for ascertaining fluid pressure in the conduit assemblies, according to the invention includes ascertaining a current tire pressure with the pressure sensor and designating the current tire pressure as a target tire pressure.
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Citations
20 Claims
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1. A method for controlling a tire pressure in a tire maintained by a tire pressure management system, comprising the steps of:
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supplying pressurized fluid from a fluid source to a conduit disposed between said fluid source and said tire for a first predetermined time period sufficient to open a wheel valve disposed at one end of an axle supporting a wheel on which said tire is mounted;
measuring a first conduit pressure in said conduit with a sensor disposed in said conduit following a second predetermined time period;
storing said first conduit pressure as a target tire pressure; and
,maintaining said tire pressure in said tire equal to said target tire pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
providing pressurized fluid from said fluid source to said conduit to pressurize said conduit to a supply pressure;
measuring said supply pressure in said conduit with said sensor; and
,comparing said supply pressure to a predetermined minimum pressure.
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3. The method of claim 2, further comprising the step of clearing a flag in a memory if said supply pressure exceeds said predetermined minimum pressure.
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4. The method of claim 1, further comprising the steps of:
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measuring a second conduit pressure in said conduit with said sensor following a third predetermined time period; and
,comparing a difference between said first and second conduit pressures to a predetermined line leak pressure.
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5. The method of claim 4, further comprising the step of setting a line leak indicator if said difference exceeds said predetermined line leak pressure.
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6. The method of claim 1, further comprising the step of providing an indicator of said target tire pressure to an operator of a vehicle.
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7. The method of claim 6, wherein said indicator comprises a visual indicator.
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8. The method of claim 1 wherein said supplying step is initiated in response to a command from an operator of a vehicle.
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9. The method of claim 1, further comprising the step of comparing said first conduit pressure to a predetermined minimum target tire pressure.
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10. The method of claim 9, further comprising the step of setting a line leak indicator if said first conduit pressure is less than said predetermined minimum target tire pressure.
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11. A method for controlling a tire pressure in a tire maintained by a tire pressure management system, comprising the steps of:
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supplying pressurized fluid from a fluid source to a conduit disposed between said fluid source and said tire for a first predetermined time period sufficient to open a wheel valve disposed at one end of an axle supporting a wheel on which said tire is mounted;
measuring a first conduit pressure in said conduit with a sensor disposed in said conduit following a second predetermined time period;
measuring a second conduit pressure in said conduit with said sensor following a third predetermined time period;
comparing a difference between said first and second conduit pressures to a predetermined line leak pressure;
setting a line leak indicator if said difference exceeds said line leak pressure;
storing said first conduit pressure as a target tire pressure; and
, maintaining said tire pressure in said tire equal to said target tire pressure.- View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
providing pressurized fluid from said fluid source to said conduit to pressurize said conduit to a supply pressure;
measuring said supply pressure in said conduit with said sensor; and
,comparing said supply pressure to a predetermined minimum pressure.
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13. The method of claim 12, further comprising the step of clearing a flag in a memory if said supply pressure exceeds said predetermined minimum pressure.
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14. The method of claim 11, further comprising the step of providing an indicator of said target tire pressure to an operator of a vehicle.
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15. The method of claim 14 wherein said indicator comprises a visual indicator.
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16. The method of claim 11 wherein said supplying step is initiated in response to a command from an operator of a vehicle.
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17. The method of claim 11, further comprising the step of comparing said first conduit pressure to a predetermined minimum target tire pressure.
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18. The method of claim 17, further comprising the step of setting a line leak indicator if said first conduit pressure is less than said predetermined minimum target tire pressure.
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19. A method for controlling a tire pressure in a tire maintained by a tire pressure management system, comprising the steps of:
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supplying pressurized fluid from a fluid source to a conduit disposed between said fluid source and said tire for a first predetermined time period sufficient to open a wheel valve disposed at one end of an axle supporting a wheel on which said tire is mounted;
measuring a first conduit pressure in said conduit with a sensor disposed in said conduit following a second predetermined time period;
comparing said first conduit pressure to a predetermined minimum target tire pressure;
setting a line leak indicator if said first conduit pressure is less than said predetermined minimum target tire pressure;
measuring a second conduit pressure in said conduit with said sensor following a third predetermined time period;
comparing a difference between said first and second conduit pressures to a predetermined line leak pressure;
setting said line leak indicator if said difference exceeds said line leak pressure;
storing said first conduit pressure as a target tire pressure; and
,maintaining said tire pressure in said tire equal to said target tire pressure. - View Dependent Claims (20)
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Specification