Fuel pump group with variable flow rate

(19)

(11)

EP 1 555 428 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	06.06.2007 Bulletin 2007/23

(43)	Date of publication A2:
	20.07.2005 Bulletin 2005/29

(21)	Application number: 04078579.2

(22)	Date of filing: 31.12.2004

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International Patent Classification (IPC):

F02M 59/10^(2006.01)
F02B 75/16^(2006.01)
F02M 59/44^(2006.01)
F02M 69/04^(2006.01)
F02M 59/46^(2006.01)

F02M 69/14^(2006.01)
F02B 67/04^(2006.01)
F02M 61/14^(2006.01)
F02M 53/00^(2006.01)
F02M 69/02^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR LV MK YU

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Priority:

14.01.2004 IT MI20040032

(71)	Applicant: PIAGGIO & C. S.p.A.
	56025 Pontedera (Pisa) (IT)

(72)	Inventor:
	Marcacci, Maurizio 57128 Livorno (IT)

(74)	Representative: Coppo, Alessandro et al
	Ing. Barzanò & Zanardo Milano S.p.A., Via Borgonuovo, 10 20121 Milano 20121 Milano (IT)

(54)	Fuel pump group with variable flow rate

(57) The present invention concerns a mechanical pump group (1) for a fuel feeding system for four-stroke injection engines, mounted at the power unit (100) to carry out feeding with variable flow rate according to the revolutions of the engine.

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