Method for cleaning engine exhaust gas

Details Method for cleaning engine exhaust gas Method for cleaning engine exhaust gas

B - Operations, Transporting

01

D

B01D 53/94 (2006.01) F01N 3/22 (2006.01)

Patent

CA 2045983

A method for cleaning an engine exhaust gas in which a gas containing oxygen is injected immediately before the exhaust gas discharged from an engine is brought into contact with a catalyst having a molecular sieve structure so that an oxygen concentration in the exhaust gas may be from 1 to 13%, when the engine is operated at an air fuel ratio of a theoretical air fuel ratio or higher. Exhaust gas from a so-called lean burn engine can effectively be cleaned of NO x, organic compounds, and CO simultaneously.

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