Method for indirect tire pressure monitoring and tire pressure monitoring system
First Claim
1. A method for indirect tire pressure monitoring for use with a motor vehicle comprising,determining a pressure loss identification variable (X, f, c) for identification of a pressure loss at a tire of a wheel of the motor vehicle,analyzing an oscillation behavior of the wheel,determining a characteristic variable (α
- , α
/v), which correlates to a gradient (α
) of a wheel torque slip curve, from the analyzed oscillation behavior of the wheel, andidentifying pressure loss at the tire of the wheel using the characteristic variable (α
, α
/v) and the pressure loss identification variable (X, f, c).
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Accused Products
Abstract
A system and method for indirect tire pressure monitoring. A pressure loss variable (X, f, c) is determined based on an analysis of an oscillation behavior of a tire of a motor vehicle for the detection of a pressure loss in the tire of a wheel. A variable (α, α/v) representing an increase (α) of a wheel torque slip curve, or depending on an increase (α) of a wheel torque slip curve (α/v), is determined from the oscillation behavior of the tire, and the variable (α, α/v) and the pressure loss variable (X, f, c) are used for detecting the pressure loss.
16 Citations
23 Claims
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1. A method for indirect tire pressure monitoring for use with a motor vehicle comprising,
determining a pressure loss identification variable (X, f, c) for identification of a pressure loss at a tire of a wheel of the motor vehicle, analyzing an oscillation behavior of the wheel, determining a characteristic variable (α - , α
/v), which correlates to a gradient (α
) of a wheel torque slip curve, from the analyzed oscillation behavior of the wheel, andidentifying pressure loss at the tire of the wheel using the characteristic variable (α
, α
/v) and the pressure loss identification variable (X, f, c). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
- , α
Specification