Methods and system for fuel ethanol content estimation and engine control

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United States of America Patent

PATENT NO 9528448
APP PUB NO 20160245193A1
SERIAL NO

14626623

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Abstract

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Methods and systems are provided for determining an amount of alcohol in fuel injected into an engine based on outputs from an exhaust gas sensor. In one example, a method includes estimating a first fuel alcohol content based on an air-fuel ratio estimated with the exhaust oxygen sensor and estimating a second fuel alcohol content based on a change in sensor output during modulating a reference voltage of the exhaust oxygen sensor between a first and second voltage. The method further includes adjusting engine operation based on a difference between the first and second fuel alcohol contents.

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Patent Owner(s)

Patent OwnerAddress
FORD GLOBAL TECHNOLOGIES LLCFAIRLANE PLAZA SOUTH SUITE 800 330 TOWN CENTER DRIVE DEARBORN MI 48126

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Clark, Timothy Joseph Livonia, US 48 626
Makled, Daniel A Dearborn, US 74 750
Scholl, David James Huntington Woods, US 7 126
Skoures, Evangelos P Detroit, US 14 238
Soltis, Richard E Saline, US 109 1372
Surnilla, Gopichandra West Bloomfield, US 552 8677
Visser, Jacobus Hendrik Farmington Hills, US 19 250

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