Patent · US Expired

Glow plug having a multi-part sheath of adjustable length

US6046434A · kind A · utility

2Cited by

5References

4Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Johannes Locher · Stuttgart, DE
Werner Teschner · Echterdingen, DE
Jorg-Chr. Nissen · Solothurn, CH

Key dates

Filing date	Jul 1, 1998
Grant date	Apr 4, 2000
Priority date	—
Expiry date	Jul 1, 2018

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF23Q2007/004
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

A sheathed-element glow plug for placement in the combustion chamber of an air-compressing internal combustion engine includes a sheath, a connector element for the glow current, and a tube secured in the sheath sealed at its end facing away from the sheath. A wire filament arrangement is embedded in insulating material within the part of the tube which protrudes from the sheath. The tube functions as a glow pencil. The sheath is manufactured using a first part, a second part, and an intermediate piece. The length of the intermediate piece is adjusted depending on the desired length of the sheathed-element glow plug.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.