Active lean NOx catalyst diagnostics

Details Active lean NOx catalyst diagnostics Active lean NOx catalyst diagnostics

2006-01-31

2006-01-31

McCall, Eric S. (Department: 2855)

Measuring and testing

Simulating operating condition

Marine

C073S023310

Reexamination Certificate

active

06990854

ABSTRACT:
An accurate thermodynamic model of an Active Lean NOx (ALNC) Catalyst is presented. The model takes into account hydrocarbon storage and release mechanisms of the ALNC, as well as the degradation in the ALNC hydrocarbon conversion efficiency due to ageing, and thus provides a more accurate estimate of an exotherm generated by hydrocarbon combustion in the ALNC. The estimated exotherm can them be used to detect system degradation and identify components responsible for the degradation.

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