Off-line calibration of universal tracking air fuel ratio...

Details Off-line calibration of universal tracking air fuel ratio... Off-line calibration of universal tracking air fuel ratio...

2011-04-12

2011-04-12

Huynh, Hai H (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C123S672000

Reexamination Certificate

active

07925421

ABSTRACT:
A fuel control system of an engine includes a simulation module and a control module. The simulation module generates a simulated pre-catalyst exhaust gas oxygen (EGO) sensor signal based on a simulated oxygen concentration of an exhaust gas. The simulation module determines a simulated pre-catalyst equivalence ratio (EQR) for the exhaust gas based on the simulated pre-catalyst EGO sensor signal. The control module generates a desired pre-catalyst EGO sensor signal based on a desired oxygen concentration of the exhaust gas. The control module determines a desired pre-catalyst EQR based on the desired pre-catalyst EGO sensor signal. The control module determines a cost function based on the simulated pre-catalyst EQR and the desired pre-catalyst EQR. The fuel control system is calibrated based on the cost function.

REFERENCES:
patent: 7246004 (2007-07-01), Dudek
U.S. Appl. No. 11/954,892, filed Dec. 12, 2007, Frank Tornambe.

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