Patent · US Active

Method for determining the resistance temperature characteristic of a ceramic glow plug

US11262393B2 · kind B2 · utility

0Cited by

3References

6Claims

0Family size

Assignee

BorgWarner Ludwigsburg GmbH · DE

Inventors

Karsten Volland · Ludwigsburg, DE
Karen Gonzalez · Echterdingen, DE
Jörg Stöckle · Ludwigsburg, DE
Andreas Klingebiel · Marbach am Neckar, DE

Key dates

Filing date	Mar 20, 2020
Grant date	Mar 1, 2022
Priority date	—
Expiry date	Apr 15, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH01L2924/00014
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method is described for determining the resistance temperature characteristic of a ceramic glow plug, wherein the glow plug is heated at a specified power, wherein before the heating it is first determined whether the glow plug is an aged glow plug, and then, if the glow plug has not been detected as an aged glow plug, the glow plug is heated at a first specified power and the resistance value thereby achieved is assigned to a temperature that is anticipated to be the final temperature when heating a factory-outlet glow plug at this first power, or if the glow plug has been detected as an aged glow plug, the glow plug is heated at a reduced power which is smaller than the first power, and the resistance value achieved thereby is assigned to the same temperature that is also anticipated when heating a factory-outlet glow plug at the first power.

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