Exhaust system and method for reducing exhaust gas temperature

The exhaust system for an internal combustion engine (1) comprises a high-pressure turbocharger (3), means (2, 7) for establishing flow communication between the engine (1) and the turbocharger (3), a low-pressure turbocharger (4), means (6) for establishing flow communication between the turbines (...

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Bibliographische Detailangaben
Hauptverfasser:	HYVOENEN JARI, GROENLUND FREDRIK, JAERVI ARTO, RAUNIO TOMI, LINDE EIRIK, HJORT ANDREAS, LAASANEN JUHA, SALMINEN HEIKKI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	The exhaust system for an internal combustion engine (1) comprises a high-pressure turbocharger (3), means (2, 7) for establishing flow communication between the engine (1) and the turbocharger (3), a low-pressure turbocharger (4), means (6) for establishing flow communication between the turbines (3a, 4a) of the turbochargers (3, 4), and a heat exchanger (5) that is arranged upstream from the turbine (3a) of the high-pressure turbocharger (3) and comprises a cooling medium duct (17). The system further comprises means (6, 11) for guiding exhaust gases from the downstream side of the high-pressure turbocharger (3) into the cooling medium duct (17) of the heat exchanger (5) for reducing the temperature of the high -pressure exhaust gases in the heat exchanger (5). The invention also concerns a method for reducing exhaust temperature.