Pencil type glow plug for diesel engines

US6054680A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Johannes Locher · Stuttgart, DE
• Albrecht Geissinger · Rochlitz, DE
• Juergen Oberle · Sindelfingen, DE
• Werner Teschner · Echterdingen, DE
• Horst Boeder · Sindelfingen, DE
• Karl-Heinz Heussner · Leonberg, DE

Key dates

• Filing date: Nov 3, 1997
• Grant date: Apr 25, 2000
• Expiry date: Nov 3, 2017

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23Q7/001
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A sheathed type glow plug preheats the combustion chamber mixture of an auto-ignition internal combustion engine. The sheathed type glow plug comprises a ceramic heating apparatus; the resistance of the ceramic heating apparatus is increased by a reduction in cross section at the point which is most accessible to the combustion chamber mixture.