Patent ID: 9181832
Filing Date: 2015-11-10
Classification: B01D,F01N,Y02A,Y02T

Abstract:
1. An exhaust gas after treatment system comprising a catalytic converter arrangement with at least one catalytic material, wherein the catalytic converter arrangement is arranged in an exhaust gas path for an exhaust gas downstream of a combustion engine, a first tank containing at least one reducing agent, a second tank containing an activator material and one or more dosing interfaces for feeding the at least one reducing agent for reducing a NOx content in the exhaust gas, the at least one reducing agent comprising at least one hydrocarbon for NOx reduction, wherein the one or more dosing interfaces are arranged to feed the activator material to the exhaust gas, wherein the activator material comprises at least one oxygenated hydrocarbon of an ether out of a group consisting of triglyme, diglyme, monoglyme, diethyl ether (DEE), dipropyl ether, wherein the activator material causes an enhancement of a catalytic activity of the catalytic material compared to the catalytic activity of the catalytic material without the activator material at least in a given temperature range, and a feedback control for adjustment of an amount of both the at least one reducing agent and the activator material which are fed to the exhaust gas with respect to a temperature of at least one of the exhaust gas and the catalytic material.