Device for the treatment of the exhaust gases of a compression-ignition engine comprising a catalyst and a nitrogen oxide adsorber placed in the exhaust manifold
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United States of America Patent
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Sep 13, 2005
Grant Date -
N/A
app pub date -
Dec 18, 1995
filing date -
Dec 19, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The device comprises in a cylindrical case (3) of an exhaust manifold (2) of an engine, a catalyst body (12) in a centre position, and means (14, 15) for adsorbing nitrogen oxides contained in the exhaust gases of the engine in a peripheral disposition around the catalyst body (12). Preferably, the catalyst body is disposed in a pipe (8) constituting an end part of an exhaust line (8a) and the adsorbing means (14, 15) is disposed in an annular space provided between the exhaust pipe (8) surrounding the catalyst body (12) and the case (3) of the manifold (2). The device permits limiting the discharges of nitrogen oxides of the exhaust gases in all the phases of operation of the engine.
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