Glow plug, particularly ceramic glow plug for use in internal combustion engine, particularly diesel engine, has resistance heater that contains ceramic composition and generates heat on conducting electricity

摘要

The glow plug (10) has a resistance heater (810) that contains a ceramic composition and generates heat on conducting electricity. A holding element (860) mainly contains another ceramic composition, which is different from the former ceramic composition. The holding element contains silicon nitride as a main component, in which the resistance heater is embedded, and holds the resistance heater. The latter ceramic composition contains a rare earth element and aluminum.