Global Patent Index - EP 2932087 A1

EP 2932087 A1 20151021 - FUEL INJECTION VALVE

Title (en)

FUEL INJECTION VALVE

Title (de)

KRAFTSTOFFEINSPRITZVENTIL

Title (fr)

SOUPAPE D'INJECTION DE CARBURANT

Publication

EP 2932087 A1 (DE)

Application

EP 13779192 A

Priority

  • DE 102012223259 A
  • EP 2013071492 W

Abstract (en)

[origin: WO2014090444A1] The invention relates to a fuel injection valve comprising a control valve (10) for controlling a fuel flow through a drain bore (28), through which drain bore (28) fuel is directed from a control space (10) into a low-pressure space (29) and which drain bore (28) opens into a control valve seat (33) and forms an outlet opening (228) at said control valve seat. The control valve (10) comprises a movable sealing element (40) that interacts with the control valve seat (33; 33') and that closes the outlet opening (228) of the drain bore (28) when abutting at the control valve seat (33; 33'), wherein the sealing element (40) in the closed state of the control valve (10) closes the drain bore (28) along a boundary line (U) against the low pressure space (29) and the boundary line (U) encompasses a cross-section surface (A), wherein the quotient of the square of the boundary line (U2) and the cross-section surface (A) is higher than 4π. Alternatively, several drain bores can be provided, wherein the quotient of the sum of the squares of the boundary lines (U2) and the sum of the cross-section surfaces (A) of the individual drain bores (28') is higher than 4π.

IPC 8 full level

F02M 63/00 (2006.01); F02M 47/02 (2006.01)

CPC (source: EP)

F02M 47/027 (2013.01); F02M 63/0077 (2013.01); F02M 2200/28 (2013.01)

Citation (search report)

See references of WO 2014090444A1

Designated contracting state (EPC)

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 state (EPC)

BA ME

DOCDB simple family (publication)

DE 102012223259 A1 20140618; EP 2932087 A1 20151021; EP 2932087 B1 20170301; WO 2014090444 A1 20140619

DOCDB simple family (application)

DE 102012223259 A 20121214; EP 13779192 A 20131015; EP 2013071492 W 20131015