STARTER CIRCUIT OF A MOTOR VEHICLE COMPRISING A DEVICE FOR STEPPING UP THE BATTERY VOLTAGE AND STARTER PROVIDED THEREWITH

摘要

The invention relates to a starter circuit that comprises a combination of a starter and a device for stepping up the battery voltage. The device for stepping up the battery voltage makes it possible to prevent a drop in the battery voltage caused by a surge of current occurring in a power circuit of the starter when the latter is powered on. The starter conventionally includes an electric motor and an electromagnetic contactor. According to the invention the device for stepping up the battery voltage comprises an inductive filtering device that includes a magnetic circuit consisting of a housing made of a magnetic material and comprising a cylindrical head two closing parts and an axial core around which a primary winding circuit which is to be inserted in series onto the power circuit and a short circuited secondary winding circuit are arranged said axial core having at least one air gap.