公开(公告)号：US20190136734A1

公开(公告)日：2019-05-09

申请号：US16173088

申请日：2018-10-29

Applicant: ExxonMobil Research and Engineering Company

Inventor： Brian M.P. Weiss ,  Shamel Merchant ,  Randall D. Partridge ,  Benjamin A. McCool ,  Ajit B. Dandekar ,  Herbert W. Barry

IPC: F01N3/20

Abstract: Systems and methods are provided for performing selective catalytic reduction on engine exhaust using ethanol from the engine fuel as the reducing agent. Fuel from a fuel tank or other fuel source can be passed through a separation module to produce a fuel stream with a reduced ethanol content and an ethanol-enriched fraction. After combustion of fuel under lean conditions, the combustion exhaust can be exposed to a catalyst system in the presence of the ethanol-enriched fraction.