EP 2475852 A1 20120718 - INTERNAL COMBUSTION ENGINE HAVING AN EXHAUST GAS SYSTEM
Title (en)
INTERNAL COMBUSTION ENGINE HAVING AN EXHAUST GAS SYSTEM
Title (de)
BRENNKRAFTMASCHINE MIT EINER ABGASANLAGE
Title (fr)
MOTEUR À COMBUSTION INTERNE ÉQUIPÉ D'UN SYSTÈME D'ÉCHAPPEMENT
Publication
Application
Priority
- DE 102009040412 A 20090907
- EP 2010004745 W 20100803
Abstract (en)
[origin: WO2011026547A1] The invention relates to an internal combustion engine (1), comprising at least one combustion chamber (2) and an exhaust gas system (3) arranged on an exhaust gas outlet channel (5), the exhaust gas system having at least one secondary air injection device (4) for injecting secondary air into the exhaust gas system (3) between the combustion chamber (2) and an exhaust emission control system (5) arranged in the exhaust gas system (3), wherein during operation of the internal combustion engine (1), a residual gas content in the combustion chamber (2) can be changed, and a secondary air injection point (4') on the exhaust gas system (3) is arranged so far from the combustion chamber (2) that injected secondary air flows back into the exhaust gas outlet channel (5) due to backflowing exhaust gas in the exhaust gas system (3) but does not flow back into the combustion chamber (2). The embodiment according to the invention makes it possible to comply with SULEV emissions limits even for engines having many combustion chambers and/or exhaust gas turbochargers, for which a SULEV certification previously seemed impossible.
IPC 8 full level
F01N 3/22 (2006.01); F01N 3/30 (2006.01); F01N 3/34 (2006.01); F02D 13/02 (2006.01); F02D 41/02 (2006.01); F02D 41/06 (2006.01); F02M 25/07 (2006.01)
CPC (source: EP US)
F01N 3/22 (2013.01 - EP US); F01N 3/30 (2013.01 - EP US); F01N 3/34 (2013.01 - EP US); F02D 13/0207 (2013.01 - EP US); F02D 13/0261 (2013.01 - EP US); F02D 41/0255 (2013.01 - EP US); F02M 26/01 (2016.02 - EP US); F01N 2430/10 (2013.01 - EP US); F02B 37/00 (2013.01 - EP US); F02D 41/064 (2013.01 - EP US); F02D 41/402 (2013.01 - EP US); Y02T 10/12 (2013.01 - EP US); Y10T 29/49231 (2015.01 - EP US)
Citation (search report)
See references of WO 2011026547A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
DE 102009040412 A1 20110310; CN 102656346 A 20120905; EP 2475852 A1 20120718; US 2012198842 A1 20120809; US 9212590 B2 20151215; WO 2011026547 A1 20110310
DOCDB simple family (application)
DE 102009040412 A 20090907; CN 201080039923 A 20100803; EP 10742749 A 20100803; EP 2010004745 W 20100803; US 201213413135 A 20120306