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1. WO2015135685 - A SYSTEM FOR EXHAUST GAS RECIRCULATION, ENGINE, USE OF A SYSTEM FOR EXHAUST GAS RECIRCULATION, METHOD FOR EXHAUST GAS RECIRCULATION AND DIESEL EXHAUST COMPOSITION

Publication Number WO/2015/135685
Publication Date 17.09.2015
International Application No. PCT/EP2015/051757
International Filing Date 29.01.2015
IPC
F02B 29/04 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
29Engines characterised by provision for charging or scavenging not provided for in groups F02B25/, F02B27/147; Details thereof
04Cooling of air intake supply
F02B 33/44 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
33Engines characterised by provision of pumps for charging or scavenging
44Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
F02B 37/00 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
37Engines characterised by provision of pumps driven at least for part of the time by exhaust
F02B 37/007 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
37Engines characterised by provision of pumps driven at least for part of the time by exhaust
007with exhaust-driven pumps arranged in parallel
F02M 25/07 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
25Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
06adding lubricant vapours
07adding exhaust gases
F01N 13/00 2010.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
13Exhaust or silencing apparatus characterised by constructional features
CPC
F02B 29/0412
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
29Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
04Cooling of air intake supply
0406Layout of the intake air cooling or coolant circuit
0412Multiple heat exchangers arranged in parallel or in series
F02B 33/44
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
33Engines characterised by provision of pumps for charging or scavenging
44Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
F02B 37/002
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
37Engines characterised by provision of pumps driven at least for part of the time by exhaust
001using exhaust drives arranged in parallel
002the exhaust supply to one of the exhaust drives can be interrupted
F02B 37/007
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
37Engines characterised by provision of pumps driven at least for part of the time by exhaust
007with exhaust-driven pumps arranged in parallel ; , e.g. at least one pump supplying alternatively
F02D 2021/083
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
21Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
06peculiar to engines having other non-fuel gas added to combustion air
08the other gas being the exhaust gas of engine
083controlling exhaust gas recirculation electronically
F02M 26/08
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
26Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
02EGR systems specially adapted for supercharged engines
08for engines having two or more intake charge compressors or exhaust gas turbines, e.g. a turbocharger combined with an additional compressor
Applicants
  • WINTERTHUR GAS & DIESEL AG [CH]/[CH]
Inventors
  • LEHNER, Adrian
Agents
  • RUDER, Susanna
Priority Data
14159351.713.03.2014EP
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) A SYSTEM FOR EXHAUST GAS RECIRCULATION, ENGINE, USE OF A SYSTEM FOR EXHAUST GAS RECIRCULATION, METHOD FOR EXHAUST GAS RECIRCULATION AND DIESEL EXHAUST COMPOSITION
(FR) SYSTÈME POUR RECIRCULATION DE GAZ D'ÉCHAPPEMENT, MOTEUR, UTILISATION D'UN SYSTÈME POUR RECIRCULATION DE GAZ D'ÉCHAPPEMENT, PROCÉDÉ POUR RECIRCULATION DE GAZ D'ÉCHAPPEMENT ET COMPOSITION D'ÉCHAPPEMENT DE DIESEL
Abstract
(EN) A system (1) for exhaust gas recirculation which is arrangeable between an exhaust outlet (2) and an air inlet (3) of an engine, preferably a two-stroke engine. The system comprises a first turbocharger (4) in a first functional duct (5) between exhaust outlet (2) and air inlet (3) and a second turbocharger (6) in a second functional duct (7) between exhaust outlet (2) and air inlet (3). The first and the second turbochargers (4,6) are separate and arranged in parallel, preferably the first and the second functional ducts (5,7) are separate and arranged in parallel. The system further comprises an exhaust gas cleaning device (8) arranged in an air duct (9) arranged between exhaust outlet (2) and air inlet (3), and a control unit for controlling the functional status of the system (1). The air duct (9) is arranged at least partially in parallel to the second functional duct (7) and the control unit is configured such that it controls a first entry valve (10) arranged in the air duct (9) upstream the exhaust gas cleaning device (8) and a second entry valve (11) arranged upstream the second turbocharger (6) in a way that both entry valves (10,11) can simultaneously assume an at least partially open position.
(FR) L'invention porte sur un système (1) pour recirculation de gaz d'échappement, lequel système peut être disposé entre une sortie d'échappement (2) et une entrée d'air (3) d'un moteur, de préférence un moteur à deux temps. Le système comprend un premier turbocompresseur (4) dans un premier conduit fonctionnel (5) entre la sortie d'échappement (2) et l'entrée d'air (3), et un second turbocompresseur (6) dans un second conduit fonctionnel (7) entre la sortie d'échappement (2) et l'entrée d'air (3). Le premier et le second turbocompresseur (4, 6) sont séparés et disposés en parallèle, et, de préférence, le premier et le second conduit fonctionnel (5, 7) sont séparés et disposés en parallèle. Le système comprend de plus un dispositif de nettoyage de gaz d'échappement (8) disposé dans un conduit d'air (9) disposé entre la sortie d'échappement (2) et l'entrée d'air (3), et une unité de commande pour commander l'état de fonctionnement du système (1). Le conduit d'air (9) est disposé au moins partiellement en parallèle avec le second conduit fonctionnel (7), et l'unité de commande est configurée de telle sorte qu'elle commande une première vanne d'entrée (10) disposée dans le conduit d'air (9) en amont du dispositif de nettoyage de gaz d'échappement (8) et une seconde vanne d'entrée (11) disposée en amont du second turbocompresseur (6), de telle façon que les deux vannes d'entrée (10, 11) peuvent prendre simultanément une position au moins partiellement ouverte.
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