METHOD AND SYSTEM FOR STABILISING A SUPPLY VOLTAGE OF AN ON-BOARD ELECTRICAL SYSTEM OF A MOTOR VEHICLE

摘要

The method of the invention is of the type consisting in limiting a variation in the voltage of a battery (3) powering the on-board electrical system (2) at the moment when a heat engine of the vehicle is started using an electric starter (4) connected to the system (2). According to the invention, a resistive element (6) is connected in series with the battery (3) and the starter (4), said element having a resistance selected according to the voltage variation from a discrete set of pre-determined values ( RDSon1, RDSon2, RDSon3 RDSon4 ). According to another feature of the invention, the predetermined values ( RDSon1, RDSon2, RDSon3 RDSon4) of the discrete set of predetermined values are proportional to a predetermined number of first terms of a harmonic series (1, 1 /2, 1 /3 et 1/4).