Apparatus and methods for closed loop fuel control

Details Apparatus and methods for closed loop fuel control Apparatus and methods for closed loop fuel control

2006-08-01

2006-08-01

Huynh, Hai (Department: 3747)

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

C123S696000

Reexamination Certificate

active

07082935

ABSTRACT:
A method of controlling fuel input to an engine of a vehicle. A feedback signal is received from a sensor that senses engine exhaust. A dither signal having the same frequency as the feedback signal is applied to a fuel control signal controlling fuel to the engine. A proportional/integral correction is applied to the fuel control signal based on the frequency.

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