Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Reexamination Certificate
2006-05-02
2006-05-02
Mohanty, Bibhu (Department: 3747)
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
Reexamination Certificate
active
07036489
ABSTRACT:
In one embodiment, the method for operating an exhaust system can comprise determining a stream temperature of an exhaust stream, and desulfating the NOx adsorber. Desulfating the NOx adsorber can comprise determining an amount of oxygen needed to increase an initial temperature of a NOx adsorber to a desulfation temperature of greater than or equal to about 600° C., producing reformate comprising hydrogen and carbon monoxide in an on-board reformer, introducing the amount of oxygen to the NOx adsorber, and introducing a sufficient amount of reformate to the NOx adsorber to attain an air to fuel ratio that is less than a combustion stoichiometric A/F ratio.
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Fisher Galen B.
Han Taeyoung
Wu Ming-Cheng
Delphi Technologies Inc.
Marshall Paul L.
Mohanty Bibhu
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