Integrated WGS/ECD exhaust treatment device for internal combustion engine having an EGR loop

摘要

An integrated water-gas-shift (WGS) and emissions control device (ECD) catalyst for treating exhaust from an internal combustion engine. The engine is assumed to have an EGR loop, such that exhaust is recirculated back to the engine's intake. A WGS catalyst on the EGR loop, for conditioning the EGR flow, is integrated with a catalyzed ECD on the main exhaust line, for reducing pollutant emissions.

主权项

1. An integrated WGS/ECD (water-gas-shift/emissions control device) catalyst for an internal combustion engine having an EGR (exhaust gas recirculation) loop and having a main exhaust line, comprising:
a housing, the housing having a substrate suitable for coating with catalytic material and having an EGR channel and an ECD channel; wherein the EGR channel and the ECD channel are not in fluid communication; wherein the EGR channel and the TWC channel are parallel to each other; wherein the EGR channel provides fluid flow along the EGR loop and is configured with a WGS catalytic formulation; and wherein the ECD channel provides fluid flow for the main exhaust line and is configured with a catalyst formulation for reducing pollutant emissions from the engine.