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Large gas engines play a key role in energy supply and transport. Due to emission regulations and high fuel prices, engines achieving both high efficiency and low emissions are required. Development efforts to that effect have resulted in combustion methods relying on lean air-fuel mixtures as well as high ignition pressures. The conditions in the combustion chamber cause high wear on the spark plug electrodes. Conventional electrodes have a limited lifetime and they are expensive due to the use of precious metal alloys.

The contribution of ceramography to the development of ceramic spark plug electrode materials for large gas engines