Patent · US Active

Method for detecting a glow plug replacement

US9567968B2 · kind B2 · utility

2Cited by

4References

10Claims

0Family size

Assignee

BorgWarner Ludwigsburg GmbH · DE

Inventors

Andreas Bleil · Ludwigsburg, DE
Michael Eberhardt · Bartlett, US
Ralf Müller · Geringswalde, DE
Clemens Rinkert · Bretten, DE
Dirk Wollin · Pforzheim, DE
Markus Pados · Linkenheim-Hochstetten, DE

Key dates

Filing date	Aug 5, 2014
Grant date	Feb 14, 2017
Priority date	—
Expiry date	Aug 20, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG01M15/042
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Described is a method for detecting a glow plug replacement of an engine, wherein a first value of a temperature-dependent variable is measured at a first glow plug of the engine and, simultaneously, a second value of the temperature-dependent variable is measured at a second glow plug of the engine. The first value of the temperature-dependent variable is compared with a stored reference value of the first glow plug and a glow plug replacement is detected if the difference of the first value from the reference value exceeds a threshold value. According to this disclosure, it is provided that the reference value is a value which, in an earlier measurement, was measured at the first glow plug simultaneously with the measurement of a value at the second glow plug which corresponds to the second value within a predefined tolerance.

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