Close coupled single module aftertreatment system

• Main Authors: SU CHANGSHENG, HOLL STEPHEN M, LIU YI, BAHRAMI BEHNAM, LIU QIANG, MCDONALD A. CARL, ARVIND VYAS HARINATH
• Format: Patent
• Language: Chinese; English
• Published: 04.06.2021
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

Disclosed is a close coupled single module aftertreatment system. The aftertreatment system includes a filtration and reduction unit. The filtration and reduction unit comprises a housing defining an internal volume. A filter is disposed in the internal volume and is configured to substantially remove particulates from the exhaust gas. A selective catalytic reduction system is disposed in the internal volume downstream of the filter and is configured to selectively reduce a portion of the exhaust gas. A first catalyst is formulated to oxidize at least a portion of the exhaust gas. An intake pipe is disposed upstream of the filtration and reduction unit and configured to communicate the exhaust gas o the filtration and reduction unit. The first catalyst is disposed in the intake pipe. An exhaust pipe is disposed downstream of the filtration and reduction unit. 本申请涉及紧密联接的单模块后处理系统。后处理系统包括过滤和还原单元。过滤和还原单元包括限定内部体积的壳体。过滤器被布置在内部体积中，并且被设置为大体上从废气中除去微粒。选择性催化还原系统在内部体积中被布置在过滤器的下游，并且被设置为选择性地还原废气的一部分。第一催化器被配制为氧化废气的至少一部分。进气管