Robert Boschgmbh

Wolfram Schoellig

Dieter Betz

Klaus Lerchenmueller

Christian Hauer

Wolfgang Gaede

A rod coil () for ignition systems, in particular in the form of an ignition coil in internal combustion engines of motor vehicles, designed for long-term serviceability. The rod coil () has a centrally located core () as the internal magnetic iron core and, on a housing (), a yoke () made of plastic as the external magnetic iron core. To avoid partial electrical discharges on the rod coil (), a fill body () is provided between the yoke () and housing () thereby forming an inner, gap-free bond between the yoke () and housing ().

Rod coil for ignition systems

An ignition system for an internal combustion engine is designed so that it can be inexpensively produced in a manner advantageous from a standpoint of production engineering. The ignition system includes a shaft in a cylinder head of an internal combustion engine and a coil rod, which can be inserted over a portion of its longitudinal extension into the shaft. The coil rod forms an open magnetic circuit which is controlled by a tubular, longitudinally slit return plate. This return plate is set apart from the coil rod, in the shaft of the cylinder head. The ignition system is intended to be used in the automobile industry.

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Stuttgart, Germany

Wolfram Schoellig