Patent ID: 6301539
Filing Date: 2001-10-09
Classification: B60T,G01H

Abstract:
Method of recognizing drive train oscillations, on vehicles having at least one front pair or one rear pair of wheels and wherein at least one wheel in said at least one front pair or rear pair of wheels is a driven wheel comprising the steps of:analyzing the speed variation of at least one of the driven wheels,establishing the occurrence of oscillations having a frequency typical of drive train oscillations,determining the occurrence of oscillations with a frequency that lies within a predetermined critical range using at least one of the frequency range of typical drive train oscillations, the duration of the oscillating condition on each wheel is established, or the number of the successive oscillations or semi-wave oscillations is counted, anddetermining the reaching of a minimum duration of the oscillating condition or a predetermined counter reading,recognizing that drive train oscillations are present if, simultaneously, the vehicle acceleration is above a predetermined limit value and if oscillation recognition has not been triggered on the second wheel of the same pair of wheels.