Catalytic NOx Reduction in Net Oxidizing Exhaust Gas Volkswagen AG

Format:

Conference/Event

Author/Creator:

Held, Wolfgang, author.

Conference Name:

International Congress & Exposition (1990-02-26 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1990

Summary:

Several different possibilities will be described and discussed on the processes of reducing NOx in lean-burn gasoline and diesel engines.In-company studies were conducted on zeolitic catalysts. With lean-burn spark-ignition engines, hydrocarbons in the exhaust gas act as a reducing agent. In stationary conditions at λ = 1.2, NOx conversion rates of approximately 45 % were achieved.With diesel engines, the only promising variant is SCR technology using urea as a reducing agent. The remaining problems are still the low space velocity and the narrow temperature window of the catalyst. The production of reaction products and secondary reactions of urea with other components in the diesel exhaust gas are still unclarified

Notes:

Vendor supplied data

Publisher Number:

900496

Access Restriction:

Restricted for use by site license