Robert Boschgmbh

Chris Schimmel

Michael Mueller

Ugur Yilmaz

Hermann Kersting

Stephan Mazingue-Desailly

Mohamed Lamdiziz

Helene Kasjanow

Nicolai Claus

Matthias Herzberg

Ba Thien Chuong Vo

Matthias Dollansky

A spark plug is provided, including a housing, an insulator situated within a housing, the insulator having a longitudinal axis, an insulator foot, body, head, and seat. Inside the housing is a housing seat which is in contact with the insulator seat of the insulator. An inner seal is situated between the housing seat and the insulator seat, so that the inner seal, the housing seat, and the insulator seat form a sealing system. The insulator seat includes a step that has a first section and a second section having an angle &#x3b3; to one another that is greater than 0&#xb0; and the first section being parallel to the insulator longitudinal axis. The inner seal is in contact with this first section, so that a radial sealing surface is formed at the insulator.

Spark plug including a multi-step insulator seat

A spark plug includes an insulator, a housing, and a deformable sealing washer disposed between the insulator and the housing, the insulator having an annular full-perimeter shoulder against which the sealing washer rests, and the shoulder having a radius in a range of between 0.20 mm and 0.60 mm.

Spark plug with improved tightness

A spark plug is described as including an insulator which is situated in a spark plug housing and which has a longitudinal axis and an opening along the longitudinal axis. Furthermore, a center electrode is situated in the opening of the insulator. Furthermore, at least one ground electrode is provided at the spark plug housing. The insulator has a first insulator section and a second insulator section, the first insulator section extending in the direction of the longitudinal axis over a first insulator section length having a first inner diameter. The second insulator section extends in the direction of the longitudinal axis over a second insulator section length having a second inner diameter. Here, the first inner diameter is smaller than the second inner diameter, the first insulator section merging directly into the second insulator section. The center electrode has a center electrode section which extends in the direction of the longitudinal axis over a center electrode section length having a center electrode outer diameter at least over the entire insulator section length of the first insulator section and of the second insulator section.

Spark plug having a center electrode with improved thermal properties

A spark plug, including an insulator, a casing including a sealing surface, and a gasket which rests against the sealing surface, the sealing surface including a plurality of recesses.

Spark plug having an increased tightening torque

A spark plug with an improved heat-dissipating capacity of the center electrode. The spark plug includes a ground electrode, a center electrode and a ceramic insulator, which is designed to accommodate the center electrode. The center electrode has a center-electrode head which lies in the direction of an electrical connection region of the spark plug and which includes an end face that is in contact with an electrically conductive connection element disposed between the electrical connection region and the center-electrode head. At its outer periphery, the center-electrode head is at least regionally in heat-conducting contact with the ceramic insulator and forms a heat-conducting contact region.

Spark plug having reduced wear of the center electrode and method of making such a spark plug

In a plug for an electrical plug connection, having a contact carrier joined together of an upper part and a lower part, the upper part and the lower part having plug chambers that are aligned with one another, and the plug chambers of the lower part having electrical contacts for contacting by electrical contacts of a mating connector that reach through the plug chambers of the upper part, having a matting seal for sealing the plug chambers and having a pressure plate pressing on the matting seal, it is provided that the matting seal is situated between the upper and lower parts of the contact carrier, and the pressure plate is integrated into the upper part.

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Waiblingen, Germany

Chris Schimmel