NOx emission-control system using a virtual sensor

Details NOx emission-control system using a virtual sensor NOx emission-control system using a virtual sensor

2005-04-19

2005-04-19

Wolfe, Willis R. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C701S104000, C701S114000, C701S105000, C701S101000, C701S102000, C701S108000, C060S276000, C060S277000, C060S286000, C060S284000, C123S295000, C123S382000, C123S389000, C123S463000

Reexamination Certificate

active

06882929

ABSTRACT:
A method and system may be provided to perform a process for controlling NOxemissions of an target engine. In one embodiment of the invention, the process may include determining predicted NOxvalues based on a model reflecting a predetermined relationship between control parameters and NOxemissions, wherein the control parameters include ambient humidity, manifold pressure, manifold temperature, fuel rate, and engine speed associated with the engine. Further, the process may include adjusting the model based on a determination of whether the predicted NOxvalues meet a predetermined criteria associated with actual NOxvalues. The adjusted model may be stored in a memory associated with the engine whereby NOxemissions exhausted from the engine may be reduced based on virtual NOxemission values determined from the adjusted model.

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