Method for the detection of a glow plug replacement

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United States of America Patent

PATENT NO 11181444
APP PUB NO 20200284691A1
SERIAL NO

16807620

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Abstract

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A method for detecting glow plug replacement or an aging glow plug. The glow plugs are heated and monitored. When a threshold value is reached for a first glow plug, a first value of a temperature-dependent variable is measured for all other glow plugs and is stored as reference values associated with the first glow plug. This process is repeated until reference values associated with each glow plug have been determined and stored for each glow plug. The process is repeated to determine a set of comparative values. The comparative values are compared with the reference values. A deviation of a comparative from a reference value of less than a specified tolerance value is considered an agreement. The inventive process concludes which of the glow plugs of the engine are unaltered and which have a resistance-temperature characteristic that has been altered to an extent indicating replacement, aging or a defect.

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Patent Owner(s)

Patent OwnerAddress
BORGWARNER LUDWIGSBURG GMBHMOERIKESTRASSE 155 LUDWIGSBURG 71636

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gonzalez, Karen Filderstadt, DE 2 1
Klingebiel, Andreas Marbach am Neckar, DE 5 4
Stöckle, Jörg Ludwigsburg, DE 7 13
Volland, Karsten Ludwigsburg, DE 4 9

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