Abstract: The invention relates to a glow plug comprising a housing, a ceramic pencil-type glow element which projects from the housing with a first end and is arranged inside the housing with a second end, a feed line which is arranged in the housing and leads to the pencil-type glow element, and a sleeve-type element which surrounds a section of the pencil-type glow element projecting from the housing. The invention is characterized in that the pencil-type glow element has a section surrounded by the housing which section tapers towards the second end, the pencil-type glow element is encircled by a contact element in the housing, which contact element has a section that narrows towards the second end of the pencil-type glow element, said narrowing section encircling at least a subsection of the tapered section of the pencil-type glow element. The invention further relates to a method for producing said glow plug.

Abstract: Composite conductor comprising a metallic conductor and a ceramic conductor or non-conductor, at least one of them being elongate, the two being connected with each other in an electrically conductive manner. The ceramic conductor or non-conductor and the metallic conductor are hard-soldered to each other by a contact surface extending obliquely to the longitudinal direction of the at least one elongate conductor, and has one of the conductors tapers at its end and the other conductor has a matching tapering recess. The tapering end of the conductor is fitted into the tapering recess.

Abstract: The present invention refers to a glow plug comprising a ceramic glow pencil (1), a protective tube (2) enclosing the glow pencil (1), a plug body (3) from which the protective tube (2) projects and a sleeve (4), which encloses the protective tube (2) and which is welded to the protective tube (2), is fitted in the plug body (3).

Abstract: The invention relates to a glow plug comprising a housing, a ceramic pencil-type glow element which projects from the housing with a first end and is arranged inside the housing with a second end, a feed line which is arranged in the housing and leads to the pencil-type glow element, and a sleeve-type element which surrounds a section of the pencil-type glow element projecting from the housing. The invention is characterized in that the pencil-type glow element has a section surrounded by the housing which section tapers towards the second end, the pencil-type glow element is encircled by a contact element in the housing, which contact element has a section that narrows towards the second end of the pencil-type glow element, said narrowing section encircling at least a subsection of the tapered section of the pencil-type glow element. The invention further relates to a method for producing said glow plug.

Abstract: The present invention refers to a glow plug comprising a ceramic glow pencil (1), a protective tube (2) enclosing the glow pencil (1), a plug body (3) from which the protective tube (2) projects and a sleeve (4), which encloses the protective tube (2) and which is welded to the protective tube (2), is fitted in the plug body (3).

Abstract: Composite conductor comprising a metallic conductor and a ceramic conductor or non-conductor, at least one of them being elongate, the two being connected with each other in an electrically conductive manner. The ceramic conductor or non-conductor and the metallic conductor are hard-soldered to each other by a contact surface extending obliquely to the longitudinal direction of the at least one elongate conductor, and has one of the conductors tapers at its end and the other conductor has a matching tapering recess. The tapering end of the conductor is fitted into the tapering recess.

Abstract: A glow plug and a process for joining a heating rod of a glow plug to a glow plug body such that a centered force fit between the heating rod and the glow plug body is produced by the radial force acting on the glow plug body.

Abstract: This invention relates to a process for sealing of the terminal-side end area of the glow tube of a glow plug, this area of the glow tube (3) being crimped.