Method for recognition of a pressure loss in motor vehicle tires
First Claim
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1. A method for detecting a pressure loss in at least one of a plurality of motor vehicle tires, the method comprising the steps of:
- detecting a pressure loss in at least one of a plurality of motor vehicle tires due to a change of a rolling circumference of the at least one of a plurality of motor vehicle tires;
calculating at least two different parameters from the rolling circumference of the at least one of a plurality of motor vehicle tires, wherein the at least two different parameters are calculated depending at least on at least a wheel torque; and
evaluating the at least two different parameters to detect pressure loss on the at least one of a plurality of motor vehicle tires, wherein the at least two different parameters are at least of two of diagonal wise (DIAG), sidewise (SIDE), or axlewise (AXLE), wherein a gradient of the parameter axlewise (AXLE) is evaluated as a function of the wheel torque at a constant vehicle speed to determine whether a change of the gradient exceeds a threshold, and the pressure loss is detected if the gradient exceeds the threshold.
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Abstract
Disclosed is a method for detection of a pressure loss in motor vehicle tires, which detects pressure loss on at least one vehicle tire based on several parameters, which are calculated from the rolling circumference of the tires. To this end, currently calculated parameters are compared with learnt values of the parameters.
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Citations
8 Claims
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1. A method for detecting a pressure loss in at least one of a plurality of motor vehicle tires, the method comprising the steps of:
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detecting a pressure loss in at least one of a plurality of motor vehicle tires due to a change of a rolling circumference of the at least one of a plurality of motor vehicle tires; calculating at least two different parameters from the rolling circumference of the at least one of a plurality of motor vehicle tires, wherein the at least two different parameters are calculated depending at least on at least a wheel torque; and evaluating the at least two different parameters to detect pressure loss on the at least one of a plurality of motor vehicle tires, wherein the at least two different parameters are at least of two of diagonal wise (DIAG), sidewise (SIDE), or axlewise (AXLE), wherein a gradient of the parameter axlewise (AXLE) is evaluated as a function of the wheel torque at a constant vehicle speed to determine whether a change of the gradient exceeds a threshold, and the pressure loss is detected if the gradient exceeds the threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification