Aktiebolaget Skf

Milen Kourtev

Jens Graf

Hendrik Anne Mol

Edo Schramm

Yosef Safi Harb

A device for detecting a pressure change in a tire includes a first temperature sensor located outside the tire being configured to produce a first temperature signal indicative of a first temperature, an input apparatus configured to receive the first temperature signal from the first temperatures sensor, and to receive a second temperature signal from a second temperature sensor being indicative of a second temperature, and to receive a tire pressure signal from a tire pressure sensor being indicative of a tire pressure of the tire, and a processor configured to output an evaluation signal including information about a change of tire pressure based on the pressure signal and based on the first temperature signal and the second temperature signal. The processor is configured to evaluate the pressure signal only if a temperature difference between the first temperature and the second temperature is smaller than a predefined limit value.

Device and method for detecting a pressure change in a tire using a plurality of temperature signals

A device for detecting a pressure change in a tire includes a first temperature sensor located outside the tire, the first temperature sensor being configured to produce a first temperature signal indicative of a first temperature, an input apparatus configured to receive the first temperature signal from the first temperatures sensor, and to receive a second temperature signal from a second temperature sensor, the second temperature signal being indicative of a second temperature, and to receive a tire pressure signal from a tire pressure sensor, the tire pressure signal being indicative of a tire pressure of the tire, and a processor configured to output an evaluation signal including information about a change of tire pressure based on the pressure signal and based on the first temperature signal and the second temperature signal.

A method of onboard determination of vehicle wheel alignment is provided. In a first step, a lateral acceleration signal is generated, using an accelerometer mounted on the vehicle wheel. In a second step, a first lateral acceleration value ais derived from a first portion of the lateral acceleration signal, which is during a longitudinal acceleration aof the vehicle. In a third step, a second lateral acceleration value ais derived from a second portion of the lateral acceleration signal, which is measured when the longitudinal acceleration has ceased and the vehicle is travelling at constant speed. In a fourth step, the magnitude of the longitudinal acceleration aassociated with the first portion of the lateral acceleration signal is measured. In a fifth step, a toe angle &#x3b1; of the vehicle wheel is determined according to the following relationship: where g is the gravitational acceleration constant.

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Säve, Sweden

Milen Kourtev