Purification capacity recovery method of exhaust gas...

Details Purification capacity recovery method of exhaust gas... Purification capacity recovery method of exhaust gas...

2011-02-22

2011-02-22

Denion, Thomas E (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

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

C060S305000, C060S287000, C060S293000, C060S295000, C060S296000

Reexamination Certificate

active

07891172

ABSTRACT:
When a fuel as a reducing agent is supplied to a NOx catalyst on which a NOx or a SOx is reduced, a flow rate of exhaust gas that flows through an exhaust passage is changed, and the fuel is supplied to the exhaust gas flowing through the exhaust passage at a plurality of timings (ΔT1, ΔT2) when the exhaust gas flows at different flow rates.

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Nov. 2, 2010 Office Action in Japanese Application No. 2005-008991, with translation.

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