Method for preferential selection of mode, gear and input speed based on multiple engine state fueling costs for a hybrid powertrain system

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EP 2 055 566 A8

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

(15)	Correction information:
	Corrected version no 1 (W1 A2)

(48)	Corrigendum issued on:
	16.12.2009 Bulletin 2009/51

(43)	Date of publication:
	06.05.2009 Bulletin 2009/19

(21)	Application number: 08019032.5

(22)	Date of filing: 30.10.2008

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International Patent Classification (IPC):

B60W 20/00^(2006.01)
B60K 6/26^(2007.10)
B60K 6/445^(2007.10)
F16H 3/72^(2006.01)
B60W 10/08^(2006.01)

B60K 1/02^(2006.01)
B60K 6/365^(2007.10)
B60K 6/547^(2007.10)
B60W 10/06^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA MK RS

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Priority:

05.11.2007 US 985364 P
24.09.2008 US 236546

(71)	Applicant: GM Global Technology Operations, Inc.
	Detroit, MI 48265-3000 (US)

(72)	Inventors:
	Heap, Anthony H. Ann Arbor, Michigan 48105 (US) Kim, Kee Yong Ann Arbor, Michigan 48103 (US)

(74)	Representative: Manitz, Finsterwald & Partner GbR
	Postfach 31 02 20 80102 München 80102 München (DE)

(54)	Method for preferential selection of mode, gear and input speed based on multiple engine state fueling costs for a hybrid powertrain system

(57) A method for controlling a hybrid powertrain system including an engine (14) selectively operative in one of an all-cylinder state and a cylinder deactivation state based upon power costs includes determining engine power costs for each operating range state of the transmission (10), determining a system power cost, selecting a preferred cost and corresponding engine operating points, selecting a preferred operating range state, selecting the engine state, and controlling the engine (14) based upon the selected operating range state, the selected engine state, and the engine operating points.