Abstract: An electrically heatable glow plug for an internal combustion engine includes a corrosion-resistant metal jacket, a compressed powder filling contained therein, and an electrically conducting coil embedded in the filling. To increase the lifetime of the heating coil, a getter material for binding the oxygen contained in the compressed powder filling is provided. The getter material can be distributed in the form of electrically nonconducting particles in the compressed powder filling. The getter material can also be applied as a coating to the coil or to the inner surface of the metal jacket.
Type:
Grant
Filed:
December 21, 1998
Date of Patent:
March 28, 2000
Assignee:
DaimlerChrysler AG and Beru AG
Inventors:
Hansjoerg Jakobi, Roland Klak, Karl-Heinz Thiemann, Hans Delesky