公开(公告)号：US20170183997A1

公开(公告)日：2017-06-29

申请号：US15390159

申请日：2016-12-23

Applicant: AUDI AG

Inventor： CHRISTOPH TAPP ,  TORSTEN RAUSCH

IPC: F01N3/20 ,  F01N3/02 ,  F02B37/00 ,  F01N9/00

CPC classification number: F01N3/2006 ,  F01N3/02 ,  F01N3/021 ,  F01N3/08 ,  F01N9/00 ,  F01N13/102 ,  F01N13/107 ,  F01N13/14 ,  F01N13/16 ,  F01N2260/02 ,  F01N2260/08 ,  F01N2310/06 ,  F01N2410/06 ,  F01N2430/02 ,  F01N2430/10 ,  F01N2510/02 ,  F01N2900/08 ,  F02B37/002 ,  F02D13/0257 ,  F02D41/0255 ,  F02D2041/001 ,  F02D2200/021 ,  Y02T10/144 ,  Y02T10/18 ,  Y02T10/26 ,  Y02T10/47

Abstract: In a method of reducing pollutants of a combustion engine, exhaust gas, generated by a cylinder of the combustion engine, is fed to an exhaust gas aftertreatment system as a function of a predefined condition solely via a first exhaust channel which communicates with a first one of first and second exhaust valves of the cylinder. The first exhaust channel is hereby coated, at least in part, by a thermally insulating layer selected such that a heat input is transmitted to the exhaust gas aftertreatment system which heat input is greater than a heat input in a second exhaust channel communicating with a second one of the first and second exhaust valves. The predefined condition is defined as a function of a coolant temperature of the combustion engine.