Method and apparatus for inferring fuel mixture
AssigneeFord Global Technologies, LLC
InventorsChristopher Kirk Davey, David Robert Nader, Jeffrey Scott Hepburn, Michael Igor Kluzner, Robert Joseph Jerger
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Abstract
A method of determining the type of fuel being burned in an engine by analyzing the signal provided by a exhaust gas oxygen sensor signal is disclosed. The determination is based on the ratio of the value of certain characteristics of the signal during the lean and rich portions of the signal.
Claims7
A method of determining the type of fuel being burned in an engine of a vehicle having an exhaust gas oxygen sensor located in the engine exhaust path, said sensor producing an output signal of varying voltage over time and having rich and lean portions, comprising the steps of:
- analyzing said output signal to determine values of at least one characteristic of the rich and lean portions respectively of said output signal;
- calculating a ratio of said values;
- and
- making a fuel type determination based on said ratio.
Dependencies are inferred from the claim text.