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OwnerBruno Dessirier, Serge Newiadomy +1inventors
InventorsBruno Dessirier, Serge Newiadomy, Mamy Rakotovao
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A method for controlling an electromagnetic retarder from a control unit said retarder including an electrical generator. The inventive method is used to determine an excitation current intensity to be injected into the primary coils of the generator of the retarder, said retarder including a rotary shaft bearing the secondary windings of the generator a n d field coils which are supplied b y the secondary windings. The rotation speed of the rotary shaft is taken into account in order to select a lower intensity if the rotation speed of the shaft is higher. The invention is suitable for use in the field of electromagnetic retarders which are intended for heavy vehicles such as trucks.
Method of controlling a retarder (1) from a control box (19) in order to determine an excitation current intensity to be injected into primary coils (8) of a generator of the retarder (1), this retarder comprising a rotary shaft (7) carrying seconding windings (5) of the generator and field coils (13) supplied by these secondary windings (5), characterised in that it consists of taking into account the rotation speed of the rotary shaft (7) in order to chose an excitation current that is lower, the higher the rotation speed of the shaft (7).
System including an electromagnetic retarder comprising a rotary shaft (7) carrying secondary windings (5) of a current generator and field coils (13) supplied by the secondary windings (5) of the generator, a stator equipped with primary coils (8) of this generator, a sensor for the rotation speed of the rotary shaft (7) and a control box (19) connected to the speed sensor and/or to the temperature probe in order to take into account the rotation speed of the rotary shaft (7) in order to choose an excitation current intensity that is lower, the higher the rotation speed of the shaft (7).
Dependencies are inferred from the claim text.