Patent · US Active

Spark plug resistance element with increased ZrSiO4 phase fraction

US11217968B2 · kind B2 · utility

0Cited by

3References

14Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Benedikt Reinsch · Riederich, DE
Hubertus Braun · Renningen, DE
Patrick Armstrong · Bamberg, DE
Stefan Nufer · Stuttgart, DE

Key dates

Filing date	Sep 26, 2018
Grant date	Jan 4, 2022
Priority date	—
Expiry date	Oct 12, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2235/365
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for manufacturing a spark plug. The method includes: furnishing an insulator; introducing into the insulator a material mixture that is configured to constitute a resistor paste, the material mixture containing ZrO2 and SiO2; heating the insulator and the material mixture present therein to a temperature T of at least 870° C., so that ZrO2 and SiO2 in the material mixture react at least partly to ZrSiO4.

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