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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
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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机译:用于处理压燃式发动机的废气的装置,该装置包括放置在排气歧管中的催化剂和氮氧化物吸附器
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摘要
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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