Intermittent application of syngas to NOx trap and/or diesel...

Details Intermittent application of syngas to NOx trap and/or diesel... Intermittent application of syngas to NOx trap and/or diesel...

2005-11-15

2005-11-15

Nguyen, Tu M. (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

Methods

C060S286000, C060S295000, C060S303000, C123S00100A, C123S003000

Reexamination Certificate

active

06964156

ABSTRACT:
A catalytic partial oxidizer (30) provides syngas (hydrogen and carbon monoxide) to an apparatus intermittently using syngas such as valves (34) feeding NOx traps (35), for brief periods of time. During turndown times when syngas is not being used, either the output of the CPO is diverted (33) to the inlet (13) of an engine (12) through the engine gas recycle (EGR) system (43-46), or the amount of fuel (19) and exhaust (23) applied to the CPO is reduced (24, 26; 59, 60) so that the CPO merely stays warm and in a reduced state, thereby being ready to restart immediately. A mini-CPO (62) may provide syngas and heat to the major CPO (30) during the turndown time when syngas is not being used by the NOx traps.

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U.S. Appl. No. 10/159,369, filed May 31, 2002.

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