Method for operating a lean burn engine with an...

Details Method for operating a lean burn engine with an... Method for operating a lean burn engine with an...

2006-10-03

2006-10-03

Denion, Thomas (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By electrolysis, electrical discharge, electrical field, or...

C060S282000, C060S285000, C060S286000, C060S295000

Reexamination Certificate

active

07114324

ABSTRACT:
In an exhaust aftertreatment system, which includes a nonthermal plasma discharge device followed by a NOx storage device followed by a precious metal catalyst, a method is disclosed for operating the engine at a lean air-fuel ratio when the NOx storage device is not full and for operating the engine rich when the NOx storage device is substantially full. Electrical energy supplied to the nonthermal plasma discharge device during lean operation is discontinued during rich operation of the engine.

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