METHOD FOR DETERMINING DETECTION THRESHOLDS DEPENDENT ON TYRE PROPERTIES FOR THE IMPROVED DETECTION OF A LOSS OF TYRE PRESSURE IN AN INDIRECTLY MEASURING TYRE PRESSURE MONITORING SYSTEM

摘要

The invention relates to a method for determining detection thresholds dependent on tyre properties for the improved detection of a loss of tyre pressure in an indirectly measuring tyre pressure monitoring system. Said method comprises the following steps: rotational speed signals (n) of the vehicle wheels are detected; at least one directly measured tyre pressure value (P) is detected; at least one reference value (DIAG) is determined according to the detected wheel rotational speed signals (n) at a pre-determined nominal tyre pressure (Psoll); at least one factor (k) describing the properties of at least one vehicle tyre is determined from wheel rotational speed variations (Δ n) during a tyre pressure variation (Δ P); and at least one detection threshold (S) dependent on tyre properties is determined, for the improved detection of a loss in tyre pressure, from the determined factor (k), from a defined critical loss of tyre pressure (Δ Pkrit) describing a tyre pressure value which, when it is not reached or is exceeded, causes a tyre pressure loss warning to be emitted to the driver of the vehicle, and from a pre-determined nominal tyre pressure (Psoll). The invention also relates to a computer program product.