Exhaust aftertreatment system with transmission control

Details Exhaust aftertreatment system with transmission control Exhaust aftertreatment system with transmission control

2005-10-07

2009-12-08

Tran, Binh Q (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

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

C060S274000, C060S280000, C060S286000, C060S297000, C060S301000, C477S098000, C477S100000

Reexamination Certificate

active

07628009

ABSTRACT:
A power generation system comprising a LNT for exhaust aftertreatment. The LNT has an effective operating temperature range. When the LNT is near a limit of its effective operating temperature range, the transmission is used to select operating points that increase the LNT's effectiveness. Generally, these operating points reduce the exhaust flow rate, although other factors such as the exhaust temperature may also be taken into account in selecting the operating points. Preferably, the LNT's effective operating temperature-range includes exhaust temperatures produced by the engine at its point of peak power output, whereby the LNT does not approach the limits of its effective operating temperature range except when the engine is at less than peak power. At lower power levels, it is generally possible to select operating points that provide lower exhaust flow rates than the flow rate occurring at the peak power level.

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