Tire/wheel assembly abnormality determining apparatus and method
First Claim
1. A tire/wheel assembly abnormality determining apparatus which determines whether there is an abnormality in a tire/wheel assembly in a vehicle provided with the tire/wheel assembly constituted by fixing a tire, that is filled with compressed air, to a wheel, comprising:
- a tire pressure sensor which directly detects an air pressure in the tire as a tire pressure and which outputs a tire pressure signal indicative of the detected tire pressure; and
a determining device which determines whether there is a deformation state abnormality, that is an abnormality regarding a deformation state of the tire, in the tire/wheel assembly, based on frequency characteristics of the output tire pressure signal.
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Accused Products
Abstract
A tire/wheel assembly abnormality determining apparatus and a method thereof determines whether there is an abnormality in a tire/wheel assembly in a vehicle provided with the tire/wheel assembly constituted by fixing a tire, that is filled with compressed air, to a wheel. The apparatus includes a tire pressure sensor which directly detects an air pressure in the tire as a tire pressure and which outputs a tire pressure signal indicative of the detected tire pressure; and a determining device which determines whether there is a deformation state abnormality, that is an abnormality regarding a deformation state of the tire, in the tire/wheel assembly, based on frequency characteristics of the output tire pressure signal. Therefore, it is possible to accurately determine whether there is an abnormality in the tire/wheel assembly in the vehicle, regardless of fluctuation of a wheel speed.
16 Citations
16 Claims
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1. A tire/wheel assembly abnormality determining apparatus which determines whether there is an abnormality in a tire/wheel assembly in a vehicle provided with the tire/wheel assembly constituted by fixing a tire, that is filled with compressed air, to a wheel, comprising:
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a tire pressure sensor which directly detects an air pressure in the tire as a tire pressure and which outputs a tire pressure signal indicative of the detected tire pressure; and
a determining device which determines whether there is a deformation state abnormality, that is an abnormality regarding a deformation state of the tire, in the tire/wheel assembly, based on frequency characteristics of the output tire pressure signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A tire/wheel assembly abnormality determining method for determining whether there is an abnormality in a tire/wheel assembly in a vehicle provided with the tire/wheel assembly constituted by fixing a tire, that is filled with compressed air, to a wheel, comprising the steps of:
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directly detecting an air pressure in the tire as a tire pressure, and outputting a tire pressure signal indicative of the detected tire pressure; and
determining whether there is a deformation state abnormality, that is an abnormality regarding a deformation state of the tire, in the tire/wheel assembly, based on frequency characteristics of the output tire pressure signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification