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Multitorch Gmbh

Reinhard Latsch

Dieter Kuhnert

Georg Maul

A spark plug for igniting a combustible gas mixture in an internal combustion engine includes an ignition electrode with an electrical supply line is connected thereto. A pipe housing is provided for enclosing the electrical supply line and a venting channel is provided for discharging combustion gases from the pipe housing. The venting channel provides for discharging combustion gases infiltrating the spark plug as leakage gases run along the supply line.

Spark plug

A precombustion chamber ignition device for preferably lean fuel-air mixtures and having a precombustion chamber. This precombustion chamber contains a electrode carrier extending into the precombustion chamber and on it at least one ignition electrode is attached, which has at least one ignition portion, which cooperates with a internal wall surface of the precombustion chamber in defining at least one spark gap extending substantially athwart the longitudinal axis of the precombustion chamber. In this respect the internal wall surface acts as a ground electrode. The ignition portion of the at least one ignition electrode is offset in relation to the longitudinal axis of the precombustion chamber and is arranged essentially parallel to the wall surface, which is substantially cylindrical in the spark gap portion, of the precombustion chamber close to the wall surface. In consequence it is possible for the ignition potential to be reduced and in the case of long term operation for the working life of the precombustion chamber ignition device to be increased. More particularly however the reliability of flaming is a substantially improved in the case of diluted fuel-air mixtures (lean mixtures, recycled exhaust gas ).

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Baden Baden, Germany

Reinhard Latsch