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1. (WO2016062395) EXHAUST GAS POST-TREATMENT DEVICE FOR AN INTERNAL COMBUSTION ENGINE, IN PARTICULAR OF A MOTOR VEHICLE

Pub. No.:    WO/2016/062395    International Application No.:    PCT/EP2015/002072
Publication Date: Fri Apr 29 01:59:59 CEST 2016 International Filing Date: Wed Oct 21 01:59:59 CEST 2015
IPC: F01N 3/20
F01N 3/28
Applicants: DAIMLER AG
Inventors: RÖTTGER, Wilhelm
GIL ARBUES, Andrea
SCHUNK, Aloysius
SCHEER, Wolfgang
Title: EXHAUST GAS POST-TREATMENT DEVICE FOR AN INTERNAL COMBUSTION ENGINE, IN PARTICULAR OF A MOTOR VEHICLE
Abstract:
The invention relates to an exhaust gas post-treatment device (10) for an internal combustion engine, in particular of a motor vehicle, having an internal pipe element (12) which has an internal duct (14) through which an internal exhaust gas mass flow (m_Abg_A) can flow during operation of the internal combustion engine, having an external pipe element (16) which surrounds, on the outer circumference side, at least one longitudinal region (18) of the internal pipe element (12) to form an external duct (20) through which an external exhaust gas mass flow (m_Abg_B) can flow during operation of the internal combustion engine, and having a metering element (22) which opens into the internal duct (14) in the longitudinal region (18) and by means of which a reducing agent can be metered into the internal exhaust gas mass flow (m_Abg_A), wherein the exhaust gas post treatment device (10) is embodied in such a way that during the operation of the internal combustion engine the external exhaust gas mass flow (m_Abg_B) corresponds to the internal exhaust gas mass flow (m_Abg_A) or is greater than the internal exhaust gas mass flow (m_Abg_A).