EP 2867517 B1 20160713 - FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES
Title (en)
FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES
Title (de)
KRAFTSTOFFEINSPRITZVENTIL FÜR BRENNKRAFTMASCHINEN
Title (fr)
INJECTEUR DE CARBURANT POUR MOTEURS À COMBUSTION INTERNE
Publication
Application
Priority
- DE 102012211239 A 20120629
- DE 102012220025 A 20121102
- EP 2013060078 W 20130515
Abstract (en)
[origin: WO2014000957A1] The invention relates to a fuel injection valve comprising a housing (1) in which pressure is applied to a nozzle needle (8), in a control chamber (28), at least indirectly with a closing force in the direction of a valve seat (10). The pressure in the control chamber (28) can be adjusted using a control valve (40) as said control chamber (28) is able to be connected to a low pressure chamber (46) via an outlet restrictor (31) and be filled with fuel at high pressure via an inlet restrictor (30). A longitudinally-displaceable control piston (29) is arranged in the control chamber (28) and divides said chamber (28) into a first control sub-chamber (128) and a second control sub-chamber (228), the first control sub-chamber (128) being able to be connected to the low pressure chamber (46) by means of said outlet restrictor (31). A sealing surface (38) is formed on the control piston (29) and interacts with a sealing seat (39) in the control chamber (28) such that the inlet restrictor (30) is hydraulically disconnected from the second control sub-chamber (228) when the sealing surface (38) comes to rest against the sealing seat (39). Said first control sub-chamber (128) and second control sub-chamber (228) are constantly hydraulically interconnected by means of a restrictor connection (34).
IPC 8 full level
F02M 47/02 (2006.01); F02M 61/20 (2006.01); F02M 63/00 (2006.01)
CPC (source: EP US)
F02M 47/02 (2013.01 - US); F02M 47/025 (2013.01 - EP); F02M 47/027 (2013.01 - US); F02M 63/0029 (2013.01 - EP US); F02M 63/0042 (2013.01 - EP US); F02M 63/0043 (2013.01 - EP US); F02M 63/0075 (2013.01 - EP US); F02M 61/20 (2013.01 - EP US); F02M 2547/003 (2013.01 - EP US)
Citation (examination)
EP 2735725 A1 20140528 - BOSCH GMBH ROBERT [DE]
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
DOCDB simple family (publication)
DE 102012220025 A1 20140102; EP 2867517 A1 20150506; EP 2867517 B1 20160713; US 2015159607 A1 20150611; US 9777684 B2 20171003; WO 2014000957 A1 20140103
DOCDB simple family (application)
DE 102012220025 A 20121102; EP 13723131 A 20130515; EP 2013060078 W 20130515; US 201314411895 A 20130515