Tire-inflation method, and device and machine for implementing the method
First Claim
1. Method for inflating a tyre (5) on a vehicle wheel (3) by means of an inflation machine (2) controlled by a programmable data management unit (17), the said method comprising the steps of:
- a) using a wheel (3) where at least one of the components (4, 5 and 6) of the wheel (3) is provided with an information medium (7, 8, 9) carrying a temperature sensor (20) able to supply a value of a temperature of the tyre (5) on the wheel, the said information medium (7, 8, 9) being able to be consulted automatically and able to supply, when it is consulted, at least one data item (Tp) that can be used for inflating the tyre,b) automatically consulting the said information medium (7, 8 or 9) and automatically transmitting to the said programmable data management unit (17) at least the value of the temperature (Tp) of the tyre supplied by the temperature sensor (20),c) supplying to the programmable data management unit (17) at least one data item for defining a set value (Pc) for the inflation pressure of the tyre (5),d) measuring an ambient temperature on the site of the inflation machine (2),e) calculating an average value of the said ambient temperature over a predefined elapsed time period,f) calculating, on the basis of the said set value (Pc) for the inflation pressure, a corrected set value (Pcc) taking account of the value of the temperature (Tp) of the tyre (5) supplied by the temperature sensor (20), the corrected set value Pcc being calculated according to the formula
2 Assignments
0 Petitions
Accused Products
Abstract
The method consists in adjusting the pressure of a tire (5) according to a corrected set value Pcc calculated using formula (I), wherein: Pc is a set value recommended by a car manufacturer and a tire producer; Tp is the temperature of the tire (5), supplied by a temperature sensor installed in the tire, and Tref is a variable reference temperature which is selected as being the lowest temperature from the instantaneous ambient temperature measured (at 37) at the site of the inflating machine (2) and a calculated mean value for ambient temperature, the pressures Pc and Pcc being in absolute value and temperatures Tp and Tref being given in degrees K.
29 Citations
28 Claims
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1. Method for inflating a tyre (5) on a vehicle wheel (3) by means of an inflation machine (2) controlled by a programmable data management unit (17), the said method comprising the steps of:
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a) using a wheel (3) where at least one of the components (4, 5 and 6) of the wheel (3) is provided with an information medium (7, 8, 9) carrying a temperature sensor (20) able to supply a value of a temperature of the tyre (5) on the wheel, the said information medium (7, 8, 9) being able to be consulted automatically and able to supply, when it is consulted, at least one data item (Tp) that can be used for inflating the tyre, b) automatically consulting the said information medium (7, 8 or 9) and automatically transmitting to the said programmable data management unit (17) at least the value of the temperature (Tp) of the tyre supplied by the temperature sensor (20), c) supplying to the programmable data management unit (17) at least one data item for defining a set value (Pc) for the inflation pressure of the tyre (5), d) measuring an ambient temperature on the site of the inflation machine (2), e) calculating an average value of the said ambient temperature over a predefined elapsed time period, f) calculating, on the basis of the said set value (Pc) for the inflation pressure, a corrected set value (Pcc) taking account of the value of the temperature (Tp) of the tyre (5) supplied by the temperature sensor (20), the corrected set value Pcc being calculated according to the formula - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. Device for inflating a tyre (5) on a vehicle wheel (3), comprising:
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a) at least one automatically consultable information medium (7, 8 or 9) carried by at least one of a components (4, 5 or 6) of the wheel (3) whose tyre (5) is to be inflated, the said information medium carrying a first temperature sensor (20) able to supply a value of a temperature of the tyre (5) on the wheel (3) and being able to supply, when it is consulted, at least one data item (Tp) that can be used for inflating the tyre (5), b) a consultation and transmission means (19) able to automatically consult the said information medium (7, 8 or 9) and to automatically transmit the said at least one data item to a programmable data management unit (17), c) the said programmable data management unit (17), d) a second temperature sensor (27) for measuring an ambient temperature on a site of an inflation machine (2), e) calculation means included in the said programmable data management unit (17) for calculating a corrected set value (Pcc) for an inflation pressure of the tyre (5) to be inflated, on the basis of a set value (Pc) for the inflation pressure defined from at least one data item supplied to the said programmable data management unit (17), and taking account of the value of the temperature (Tp) of the tyre supplied by a first temperature sensor (20), the programmable data management unit (17) being programmed so that the said calculation means calculate an average value of the said ambient temperature over a predefined elapsed time period, and calculate the corrected set value Pcc according to the formula; - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. Inflation machine for vehicle wheels having at least one component (4, 5 or 6) that is provided with an information medium (7, 8 or 9) carrying a first temperature sensor (20) able to supply a value of a temperature of a tyre (5) on a corresponding wheel (3), the said information medium (7, 8 or 9) being automatically consultable and able to supply, when it is consulted, at least one data item (Tp) that can be used for inflating the tyre, the said machine (2) comprising:
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a) a consultation and transmission means (19) able to automatically consult the said information medium (7, 8 or 9) and to automatically transmit the said at least one data item to a programmable data management unit (17), b) the said programmable data management unit (17), c) a second temperature sensor (27) for measuring an ambient temperature on the site of the inflation machine (2), d) calculation means included in the said programmable data management unit (17) for calculating a corrected set value (Pcc) for an inflation pressure of the tyre (5) to be inflated, on the basis of a set value (Pc) for the inflation pressure defined from at least one data item supplied to the said programmable data management unit (17), and taking account of the value of the temperature (Tp) of the tyre supplied by the first temperature sensor (20), the programmable data management unit (17) being programmed so that the said calculation means calculate an average value of the said ambient temperature over a predefined elapsed time period, and calculate the corrected set value Pcc according to the formula; - View Dependent Claims (23, 24, 25, 26, 27, 28)
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Specification