FUEL DELIVERY PRESSURE CONTROL

(19)

(11)

EP 2 942 515 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	02.12.2015 Bulletin 2015/49

(43)	Date of publication A2:
	11.11.2015 Bulletin 2015/46

(21)	Application number: 15159323.3

(22)	Date of filing: 17.03.2015

(51)

International Patent Classification (IPC):

F02D 41/38^(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 RS SE SI SK SM TR
	Designated Extension States:
	BA ME
	Designated Validation States:
	MA

(30)

Priority:

25.03.2014 GB 201405272

(71)	Applicant: Delphi International Operations Luxembourg S.à r.l.
	4940 Bascharage (LU)

(72)	Inventor:
	Schreurs, Bart 6700 Waltzing (BE)

(74)	Representative: Neill, Andrew Peter
	Delphi Diesel Systems Patent Department Courteney Road Gillingham, Kent ME8 0RU Gillingham, Kent ME8 0RU (GB)

(54)	FUEL DELIVERY PRESSURE CONTROL

(57) In an internal combustion engine, a method of controlling the pressure of a fuel accumulator volume which supplies fuel under pressure to one or more fuel injectors, comprising:
i) determining or measuring the actual pressure at the inlet manifold; and,
ii) determining an accumulator volume pressure based on the results of step i). The accumulator volume may be a common rail. The method may include determining the difference between the actual inlet/manifold pressure and a scheduled inlet /manifold pressure, and determining the accumulator volume based on this difference.

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