EP 2647821 A1 20131009 - Exhaust gas recirculation for large internal combustion engines
Title (en)
Exhaust gas recirculation for large internal combustion engines
Title (de)
Abgasrückführung für große Verbrennungsmotoren
Title (fr)
Recirculation de gaz d'échappement pour de grands moteurs à combustion interne
Publication
Application
Priority
EP 12163335 A 20120405
Abstract (en)
An internal combustion engine may comprise an exhaust gas recirculation line (80, 82, 84, 86) with a high temperature cooler (50), an exhaust gas compressor (70), a low temperature cooler (55), and a control unit (60). The control unit (60) may be configured to control the cooling performance of the high temperature cooler (50) in accordance with a cooling performance/engine operation mode information such that a temperature of the extracted exhaust gas at an exit of the high temperature cooler (50) may be maintained at a temperature above a dew point of sulphuric acid independently of the engine operation mode. For low sulphur fuel operation of the engine, operating the high temperature cooler (50) in the proposed manner allows handling severe fouling and blocking issues primarily in the low temperature cooler (55).
IPC 8 full level
F02M 25/07 (2006.01)
CPC (source: EP)
F02M 26/05 (2016.02); F02M 26/24 (2016.02); F02M 26/28 (2016.02); F02M 26/33 (2016.02); F02M 26/34 (2016.02); F02M 26/47 (2016.02)
Citation (applicant)
WO 2011066871 A1 20110609 - CATERPILLAR MOTOREN GMBH & CO [DE], et al
Citation (search report)
- [YDA] WO 2011066871 A1 20110609 - CATERPILLAR MOTOREN GMBH & CO [DE], et al
- [XY] US 5732688 A 19980331 - CHARLTON STEVE J [US], et al
- [A] US 2003192516 A1 20031016 - BRUNEMANN GEORGE [US], et al
- [A] EP 0740065 A1 19961030 - DAF TRUCKS NV [NL]
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 RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 12163335 A 20120405