EP 1651857 A1 20060503 - FUEL INJECTION DEVICE
Title (en)
FUEL INJECTION DEVICE
Title (de)
KRAFTSTOFFEINSPRITZVORRICHTUNG
Title (fr)
DISPOSITIF D'INJECTION DE CARBURANT
Publication
Application
Priority
- DE 2004001200 W 20040609
- DE 10333696 A 20030724
Abstract (en)
[origin: WO2005010342A1] The invention relates to a fuel injection device (1) comprising an injection valve (9), a line (5), which supplies fuel under high pressure to the injection valve (9) during operation, a control valve (41), which controls the pressure in a control chamber (43) of the injection valve, this control chamber being connected to said line (5), and the moving valve part (51) of the control valve can be actuated by an actuator (31) via a hydraulic coupler (38), which has two plungers (39, 40) that interact with a coupler volume of the coupler. The injection valve also comprises means for filling the coupler volume with pressurized fuel via guide gaps (65, 67) of the plungers (39, 40), whereby the plungers (39, 40) are placed inside one another while being parallel to one another. A translator space (72) is placed at the ends of the plungers (39, 20, 40), said ends facing the actuator (31). A filling space (71-2) is provided inside the outer plunger (39) and is connected to said line (5). One of the plungers (39) is mechanically coupled to the actuator (31) via a rod (61), and the other plunger (40) actuates the control valve (41) via a rod (63), whereby the direction of the closing movement of the moving valve part (51) matches the direction of fuel flowing out of the control chamber (43) so that the control valve is subjected, at least in part, to an equilibrium of forces due to the force acting upon the other plunger (40) inside the translator space (72).
IPC 1-7
IPC 8 full level
F02M 47/02 (2006.01); F02M 59/46 (2006.01); F02M 61/16 (2006.01); F02M 63/00 (2006.01); F02M 63/02 (2006.01)
CPC (source: EP US)
F02M 47/027 (2013.01 - EP US); F02M 63/0026 (2013.01 - EP US); F02M 63/0073 (2013.01 - EP US); F02M 61/167 (2013.01 - EP US); F02M 63/004 (2013.01 - EP US); F02M 63/0043 (2013.01 - EP US); F02M 63/0225 (2013.01 - EP US); F02M 2200/703 (2013.01 - EP US); F02M 2200/704 (2013.01 - EP US); F02M 2200/705 (2013.01 - EP US)
Citation (search report)
See references of WO 2005010342A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 2005010342 A1 20050203; CN 100416082 C 20080903; CN 1829858 A 20060906; DE 10333696 A1 20050224; DE 502004006265 D1 20080403; EP 1651857 A1 20060503; EP 1651857 B1 20080220; JP 2006513369 A 20060420; JP 4154425 B2 20080924; US 2007001032 A1 20070104; US 7290530 B2 20071106
DOCDB simple family (application)
DE 2004001200 W 20040609; CN 200480021480 A 20040609; DE 10333696 A 20030724; DE 502004006265 T 20040609; EP 04738652 A 20040609; JP 2005518346 A 20040609; US 56556104 A 20040609