Fuel enrichment indicator

Details Fuel enrichment indicator Fuel enrichment indicator

2011-06-28

2011-06-28

Nguyen, Hung T. (Department: 2612)

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

C340S438000, C340S576000, C701S029000

Reexamination Certificate

active

07969291

ABSTRACT:
A method for signaling a driver of a motor vehicle that the motor vehicle is operating in a stoichiometric air/fuel mode or a non-stoichiometric air/fuel mode. The method includes providing an air/fuel sensor, the air/fuel sensor providing a signal that is representative of a stoichiometric air/fuel ratio mixture or a non-stoichiometric air/fuel ratio mixture being supplied to or burned by the motor vehicle. The method also includes providing a powertrain control module that is operable to receive the signal from the air/fuel sensor and to energize a light source when a non-stoichiometric air/fuel ratio mixture signal is received.

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