Control system for internal combustion engine

(19)

(11)

EP 2 058 490 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	03.10.2012 Bulletin 2012/40

(43)	Date of publication A2:
	13.05.2009 Bulletin 2009/20

(21)	Application number: 08253550.1

(22)	Date of filing: 30.10.2008

(51)

International Patent Classification (IPC):

F02D 11/10^(2006.01)
F02D 41/10^(2006.01)

F02D 41/08^(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:

07.11.2007 JP 2007290197

(71)	Applicant: Keihin Corporation
	Shinjuku-ku, Tokyo (JP)

(72)	Inventors:
	Sugimori, Shigehiko Shioya-gun, Tochigi (JP) Sunahara, Hiroki Miyagi (JP)

(74)	Representative: Tomlinson, Kerry John
	Dehns St Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)

(54)	Control system for internal combustion engine

(57) In a system for controlling an internal combustion engine (12) mounted on a vehicle (10) and having an actuator (44) that drives a throttle valve (24) installed in an intake pipe (23) of the engine and an accelerator (17) installed to be operable by the operator, it is configured to comprise an actuator controller that controls the operation of the actuator such that the detected actual opening of the throttle valve becomes the desired opening calculated based on accelerator opening APS and engine speed NE, when the engine is determined to be under no load. With this, it becomes possible to prevent a stall of the engine without impairing operating feel of the operator even when an accelerator is rapidly opened during no load operation of the engine.

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