Spark plug fouling detection for ignition system

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United States of America Patent

PATENT NO 10054101
APP PUB NO 20180023531A1
SERIAL NO

15722867

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Abstract

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Methods and systems are provided for determining a type of spark plug fouling. In one example, a method may include differentiating spark plug fouling due to soot accumulation from spark plug fouling due to fuel additive accumulation based on a current on a control wire of the spark plug following application of a dwell command. Further, exhaust oxygen sensor degradation and/or exhaust catalyst degradation may be determined based on switching frequencies of one or more exhaust oxygen sensors and the type of spark plug fouling.

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Patent Owner(s)

  • FORD GLOBAL TECHNOLOGIES, LLC

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Glugla, Chris Paul Macomb, US 185 2600
Huberts, Garlan J Milford, US 45 519
Morrow, Nelson William Saline, US 8 89
Qu, Qiuping Troy, US 19 181

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