Hybrid intake system for superatmospheric charging of an engine intake manifold using lowpressure EGR/fresh air blending

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EP 2 295 780 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 A1)

(48)	Corrigendum issued on:
	22.06.2011 Bulletin 2011/25

(43)	Date of publication:
	16.03.2011 Bulletin 2011/11

(21)	Application number: 10008384.9

(22)	Date of filing: 11.08.2010

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International Patent Classification (IPC):

F02M 25/07^(2006.01)
F02B 37/18^(2006.01)

F02B 37/16^(2006.01)

(84)	Designated Contracting States:
	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
	Designated Extension States:
	BA ME RS

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Priority:

12.08.2009 US 539938

(71)	Applicant: International Engine Intellectual Property Company, LLC
	Warrenville IL 60555 (US)

(72)	Inventors:
	Wood, Terry G. Countryside, IL 60525 (US) Wu, Shouhao Roselle, IL 60172 (US) Pavlicek, Brian B. Homer Glen, IL 60491 (US)

(74)	Representative: Kuhnen & Wacker
	Patent- und Rechtsanwaltsbüro Prinz-Ludwig-Strasse 40A 85354 Freising 85354 Freising (DE)

(54)	Hybrid intake system for superatmospheric charging of an engine intake manifold using lowpressure EGR/fresh air blending

(57) An intake manifold (16) of an internal combustion engine (10) is charged to superatmospheric pressure by operating a first compressor (44) to compress fresh air diluted by exhaust gas into the intake manifold while operating a second compressor (24C) to compress undiluted fresh air into the intake manifold through a device (40) that allows flow in a direction from the second compressor into the intake manifold but not in an opposite direction.