Borgwarner Ludwigsburg Gmbh

Beru Ag

Manfred Adolf

Dirk Wüstenhagen

Sven Schumm

Timo Stifel

Alexander Stark

Manuel Bauer

Francesco Tridico

Werner Niessner

Martin Sackmann

Eduard Tamas

A method is described for the assembly of a magnetic core for a transformer, with the following steps: Cutting sheet metal blanks from transformer sheet, stacking the sheet metal blanks to form magnetic core segments, placing a permanent magnet at one of the magnetic core segments so that the latter is magnetized by the permanent magnet, formation of the magnetic core by placing the remaining magnetic core segments against the permanent magnet, or against a magnetic core segment already magnetized by the permanent magnet. A magnetic core is also disclosed.

Method for assembling a magnetic core for a transformer

An ignition coil is described for an internal combustion engine, with a housing, a transformer, which is arranged in an interior space of the housing, and potting compound, with which the interior space of the housing is cast. In accordance with this disclosure provision is made for the transformer to be covered by a mat, which is embedded in the potting compound.

Ignition coil and method for the manufacture of an ignition coil

A primary coil former for an ignition coil has a winding carrier surface configured for a primary coil wound thereon. Two primary winding stops limit the winding carrier surface at first and second axial ends of the carrier surface, respectively. Two holders are formed at the first axial end, each configured for holding one end of a winding wire. Two deflection domes are formed at the second axial end, one of the domes configured for guiding a winding wire back to the winding carrier surface for a clockwise winding and the other dome configured for guiding a winding wire back to the winding carrier surface for a counterclockwise winding. A groove in the winding carrier surface receives a winding wire which leads from one of the ends of the winding carrier surface up to a gap between the two deflection domes at the opposite end of the winding carrier surface.

Primary coil former for an ignition coil, and ignition coil with such a primary coil former

An inventive ignition coil has a transformer that includes a primary coil, a secondary coil and a core formed from stacked metal sheets. A plastic frame holds the sheets. A housing surrounds an interior in which the transformer is arranged and the interior is sealed with an electrically insulating casting compound. The housing comprises an interior wall bounding bounds a compartment in which a part of the core is arranged, the part of the core being outside the primary coil and the secondary coil.

Ignition coil

Described is an ignition coil comprising a housing, in which a transformer is arranged, and a plug connector, wherein the plug connector has a high voltage contact, which is connected to the secondary side of the transformer by means of a wire, which resiliently presses against an electrical contact surface. The contact surface is concavely shaped.

High voltage contact for an ignition coil

A connector plug is described for connecting an ignition coil to a spark plug, comprising an electrical conductor, which has a first end for contacting the ignition coil and a second end for contacting the spark plug, and a protective tube, which surrounds the electrical conductor. In accordance with this disclosure it is proposed that the protective tube has a predetermined bending point with a reduced bending stiffness.

Connector plug for connecting an ignition coil to a spark plug

Described is an ignition coil for an internal combustion engine having a housing with a plug connector, wherein the plug connector has an elastomeric cap slid onto a tubular housing section that surrounds a terminal contact. This disclosure provides that the terminal contact is surrounded by a circumferential slot, in which an inner edge of the cap sits.

Described is a spark plug connector having an interference-suppression resistor which has a wire winding on a coil body. According to this disclosure, it is provided that the coil body carries an electrical resistor that contacts the wire winding and is connected in parallel thereto. In addition, an interference-suppression resistor for an ignition system of an internal combustion engine is described.

Spark plug connector and interference-suppression resistor for an ignition system

Spark plug with an electrically insulating ceramic insulator ( ), a metallic spark plug body ( ), a ground electrode ( ) and a middle electrode ( ) which is located centrally in a hole ( ) of the ceramic insulator ( ), around the ignition-side end area on the periphery of the middle electrode ( ) a peripheral tip ( ) being formed which encompasses the middle electrode ( ) in an annular manner.

Growing community of inventors

Schwaikheim, Germany

Manfred Adolf