Wear condition detecting apparatus for tire and method thereof
First Claim
1. A wear condition detecting apparatus for a tire comprising:
- a rotational speed detecting means for regularly detecting rotational speeds of tires of four wheels presently attached to a vehicle,a calculating means for calculating a ratio of a rotational speed of a front wheel to a rotational speed of a rear wheel based on a measured value obtained by the rotational speed detecting means, and for obtaining a relational formula between the rotational speed ratio and an acceleration of the vehicle, anda comparing means for comparing a slope of the relational formula obtained by the calculating means with a preliminarily known slope of a relational formula between a rotational speed ratio of a tire and an acceleration of the vehicle.
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Abstract
A wear condition detecting apparatus for a tire comprising: (a) a rotational speed detecting means for regularly detecting rotational speeds of tires of four wheels presently attached to a vehicle, (b) a calculating means for calculating a ratio of a rotational speed of a front wheel to a rotational speed of a rear wheel based on a measured value obtained by the rotational speed detecting means, and for obtaining a relational formula between the rotational speed ratio and an acceleration of the vehicle, and (c) a comparing means for comparing a slope of the relational formula obtained by the calculating means with a preliminarily known slope of a relational formula between a rotational speed ratio of a tire and an acceleration of the vehicle. According to the present invention, the wear condition of a tire can be known, so that the performance and safety of a vehicle can be improved.
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Citations
8 Claims
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1. A wear condition detecting apparatus for a tire comprising:
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a rotational speed detecting means for regularly detecting rotational speeds of tires of four wheels presently attached to a vehicle, a calculating means for calculating a ratio of a rotational speed of a front wheel to a rotational speed of a rear wheel based on a measured value obtained by the rotational speed detecting means, and for obtaining a relational formula between the rotational speed ratio and an acceleration of the vehicle, and a comparing means for comparing a slope of the relational formula obtained by the calculating means with a preliminarily known slope of a relational formula between a rotational speed ratio of a tire and an acceleration of the vehicle. - View Dependent Claims (3, 4, 5, 7)
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2. A wear condition detecting method for a tire comprising the steps of:
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regularly measuring rotational speeds of tires of four wheels presently attached to a vehicle, calculating a ratio of a rotational speed of a front wheel to a rotational speed of a rear wheel based on the measured rotational speed, obtaining a relational formula between the rotational speed ratio and an acceleration of the vehicle, and comparing a slope of the relational formula with a preliminarily known slope of a relational formula of a rotational speed ratio of a tire and an acceleration of the vehicle to determine a wear condition of a tire. - View Dependent Claims (6, 8)
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Specification