SYSTEM AND METHOD FOR DETERMINING TIRE WEAR
First Claim
1. A system for determining tire wear for tires of a wheeled motor vehicle, comprising:
- a direct tire pressure determination unit being configured to measure at least the tire pressure of the tires;
an indirect tire pressure determination unit being configured to determine for at least some of the tires a roll radius factor corresponding to or depending from a roll radius of the respective tire;
a tire force determination unit being configured to determine a vertical force factor corresponding to or depending from a vertical force applied to the tires;
a processing unit determining the tire wear for such tires of the motor vehicle for which the indirect tire pressure determination unit provides the respective roll radius factor, namelyby compensating the roll radius factor of the tires provided by the indirect tire pressure determination unit on basis of the tire pressures of the respective tires provided by direct tire pressure determination unit and on the basis of the vertical force factor of the respective tires provided by the tire force determination unit thereby providing a compensated roll radius factor for the respective tire, andby comparing the compensated roll radius factor for the respective tire with a reference roll radius factor in such a way that the difference between the compensated roll radius factor and the reference roll radius factor of the respective tire provides the tire wear of the respective tire.
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Accused Products
Abstract
System for determining tire wear for tires of a wheeled motor vehicle including a direct tire pressure determination unit being configured to measure at least the tire pressure of the tires; an indirect tire pressure determination unit being configured to determine for at least some of the tires a roll radius factor corresponding to or depending from the roll radius of the respective tire; a tire force determination unit being configured to determine a vertical force factor corresponding to or depending from a vertical force applied to the tires; and a processing unit for determining the tire wear for such tires of the motor vehicle for which the indirect tire pressure determination unit provides the respective roll radius factor, namely by compensating the roll radius factor of the tires provided by the indirect tire pressure determination unit.
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Citations
15 Claims
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1. A system for determining tire wear for tires of a wheeled motor vehicle, comprising:
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a direct tire pressure determination unit being configured to measure at least the tire pressure of the tires; an indirect tire pressure determination unit being configured to determine for at least some of the tires a roll radius factor corresponding to or depending from a roll radius of the respective tire; a tire force determination unit being configured to determine a vertical force factor corresponding to or depending from a vertical force applied to the tires; a processing unit determining the tire wear for such tires of the motor vehicle for which the indirect tire pressure determination unit provides the respective roll radius factor, namely by compensating the roll radius factor of the tires provided by the indirect tire pressure determination unit on basis of the tire pressures of the respective tires provided by direct tire pressure determination unit and on the basis of the vertical force factor of the respective tires provided by the tire force determination unit thereby providing a compensated roll radius factor for the respective tire, and by comparing the compensated roll radius factor for the respective tire with a reference roll radius factor in such a way that the difference between the compensated roll radius factor and the reference roll radius factor of the respective tire provides the tire wear of the respective tire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for determining tire wear for tires of a wheeled motor vehicle, comprising:
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measuring at least the tire pressure of the tires using a direct tire pressure determination unit; determining for at least some of the tires a roll radius factor corresponding to or depending from a roll radius of the respective tire using an indirect tire pressure determination unit; determining a vertical force factor corresponding to or depending from a vertical force applied to the tires using a tire force determination unit; and determining the tire wear for such tires of the motor vehicle for which the indirect tire pressure determination unit provides the respective roll radius factor (i) by compensating the roll radius factor of the tires provided by the indirect tire pressure determination unit on the basis of the tire pressures of the respective tires provided by the direct tire pressure determination unit and on the basis of the vertical force factor of the respective tires provided by the tire force determination unit thereby providing a compensated roll radius factor for the respective tire, and (ii) by comparing the compensated roll radius factor for the respective tire with a reference roll radius factor in such a way that a difference between the compensated roll radius factor and the reference roll radius factor of the respective tire provides the tire wear of the respective tire. - View Dependent Claims (12, 13, 14, 15)
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Specification