Method for the simultaneous desulfation of a lean NO x trap...

Details Method for the simultaneous desulfation of a lean NO x trap... Method for the simultaneous desulfation of a lean NO x trap...

2007-04-03

2007-04-03

Nguyen, Tu M. (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S274000, C060S277000, C060S280000, C060S285000, C060S297000

Reexamination Certificate

active

11174404

ABSTRACT:
High exhaust gas temperatures whereby sulfur is removed from a lean NOx traps simultaneously with regeneration of a Diesel particulate filter is provided by alternating engine operation in respectively defined lean and rich combustion modes. The duration and frequency of the respective lean and rich operating modes, as well as the air/fuel ratio during the respective modes, are preferably controlled by the sensed temperature of the lean NOx trap substrate.

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