Pulse Electronics Gmbh

Pulse Gmbh

Pulse Gmbh & Co. Kg

Friedhelm Rosemann

Stefan Wasserfuhr

The invention relates to an ignition coil for an internal combustion engine. Said ignition coil comprises a primary coil base () carrying a primary winding () and having an especially cylindrical shape, a low voltage connection area () for connecting the primary winding () to a low voltage, a secondary winding () inductively coupled to the primary winding () and disposed on an especially cylindrical secondary coil base (), for providing a high voltage for the spark plug of the internal combustion engine. The primary coil base () and the secondary coil base () are mounted concentric to one another. The ignition coil also comprises a high-voltage connection area () in which the secondary winding () contacts the spark plug. The aim of the invention is to improve the ignition coil of the aforementioned type with respect to its electromagnetic compatibility. For this purpose, an electrically conducting layer () which has a substantially cylindrical shape and mechanical damping properties is provided inside an annular space defined by the outer winding of the two windings (). Said layer is configured as a sandwich structure and consists of at least two partial layers () with an interposed intermediate layer ().

Ignition coil for an internal combustion engine

An ignition coil includes a primary coil carrying primary coil body, a low voltage connection area and a secondary coil inductively coupled with the primary coil for the provision of a high voltage for a spark plug of the combustion engine. The secondary coil is carried on a secondary coil body concentrically enclosed by the primary coil body. A high voltage connection area is provided, in which the secondary coil contacts the spark plug. The secondary coil body encloses a cylindrical, magnetic core, and primary coil body and secondary coil body are both surrounded by an electrically and magnetically conductive shell. The shell includes a longitudinal slit therethrough. The primary coil includes an uneven number of layers. A remote extending coil lead from the low voltage connection is led along the longitudinal slit of the shell. The coil lead runs at least partially within the outer perimeter of the shell.

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Lüdenscheid, Germany

Friedhelm Rosemann