公开(公告)号：US20190091615A1

公开(公告)日：2019-03-28

申请号：US15712253

申请日：2017-09-22

Applicant: Tenneco Automotive Operating Company Inc.

Inventor： Michael C. BRADFORD ,  Alan C. BROCKMAN ,  Ryan A. FLOYD

IPC: B01D39/16 ,  F01N3/20 ,  F01N3/28 ,  B01D53/94 ,  B01D15/10 ,  B01J23/04 ,  B01J27/232 ,  B01J35/04 ,  B01J16/00 ,  C07C273/16

Abstract: An exhaust after-treatment system and a method for treating an engine exhaust that each utilize a filter for removing biuret from an aqueous urea exhaust treatment fluid. The filter includes a filter element that includes an adsorbent material configured to adsorb the biuret from the aqueous urea exhaust treatment fluid, and includes a biuret conversion catalyst impregnated in the adsorbent material that is configured to convert the biuret into a material useful for exhaust after-treatment or into a material that is innocuous to an exhaust after-treatment system.

公开(公告)号：US20180238217A1

公开(公告)日：2018-08-23

申请号：US15753494

申请日：2016-08-19

Applicant: Tenneco Automotive Operating Company Inc. ,  Tenneco GmbH

Inventor： Mark DEVITO ,  Ryan A. FLOYD ,  Adam J. KOTRBA ,  Padmanabha R. ETTIREDDY ,  Michael C. BRADFORD ,  Bradley FINGLAND ,  John W. DEGEORGE ,  Philipp KREUTZIGER ,  Manuel KLUCK ,  Michael FLOCKERT ,  Mathias HUND ,  Eric A. HEIN

IPC: F01N3/20 ,  B01D53/94

CPC classification number: F01N3/208 ,  B01D53/9409 ,  B01D53/9418 ,  B01D53/9431 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2251/2062 ,  F01N3/021 ,  F01N13/009 ,  F01N2240/25 ,  F01N2610/02 ,  F01N2610/06 ,  F01N2610/08 ,  F01N2610/10 ,  F01N2610/14 ,  F01N2610/1406 ,  Y02T10/24

Abstract: An exhaust aftertreatment system may include a reductant tank, a gaseous ammonia source, an injector, first conduit and a second conduit. The injector may receive the liquid reductant from the reductant tank and the gaseous ammonia from the gaseous ammonia source and inject the liquid reductant into a stream of exhaust gas in a first mode, inject the gaseous ammonia into the stream of exhaust gas in a second mode, and both the liquid reductant and the gaseous ammonia into the stream of exhaust gas in a third mode. The first conduit may communicate liquid reductant from the reductant tank to the injector. The second conduit may communicate gaseous ammonia from the gaseous ammonia source to the injector.