CRANKCASE VENTILATION SYSTEM

PROBLEM TO BE SOLVED: To provide a crankcase ventilation system for an internal combustion engine that has a two-stage charge boosting system resistant to pollution by combustion gas. SOLUTION: An intake system 5 supplies an engine 2 with air 8, which is sequentially pressurized by an upstream super...

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Bibliographische Detailangaben
Hauptverfasser:	BROTHERTON WILLIAM MARC EDWARD, CRIDDLE MARK A
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL CRANKCASE VENTILATING ENGINE PLANTS IN GENERAL HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INTERNAL-COMBUSTION PISTON ENGINES LIGHTING LUBRICATING INTERNAL COMBUSTION ENGINES LUBRICATING OF MACHINES OR ENGINES IN GENERAL MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a crankcase ventilation system for an internal combustion engine that has a two-stage charge boosting system resistant to pollution by combustion gas. SOLUTION: An intake system 5 supplies an engine 2 with air 8, which is sequentially pressurized by an upstream supercharger 18 and a downstream turbocharger 20. A crankcase evacuation system 40 draws crankcase gas 42 from a crankcase 6, and feeds it into the intake system 5 via either a first conduit 48 or a second conduit 50 in dependence on the setting of a pressure- regulated control valve 46. If the first booster stage 18 is in operation, the first conduit 48 is used to introduce the crankcase gas 42 upstream of the first booster stage 18. If the first booster stage 18 is out of operation, the second conduit 50 is used to introduce the crankcase gas 42 downstream of the first booster stage 18 and upstream of the second booster stage 20. COPYRIGHT: (C)2003,JPO