EP 0447502 B1 19921223 - FUEL INJECTION VALVE
Title (en)
FUEL INJECTION VALVE
Publication
Application
Priority
DE 3931604 A 19890922
Abstract (en)
[origin: WO9104407A1] A fuel injection valve for fuel injection systems of internal combustion engines has a valve needle (18) co-operating with a valve seat (17) to open and close a valve aperture (16), which is actuated by an electromagnet (20) against a return spring (27). The return spring is supported on the armature (24) of the electromagnet (20), which is firmly secured to the valve needle (18), and on an adjusting tube (28) which is axially movable inside the core (22) of the electromagnet (20) and through which fuel is fed to the valve aperture (16) from a fuel intake stub (15). The travel of the valve needle is restricted by a transverse pin (32) with a central stop surface (33) which is securely arranged inside the magnet core (22). The adjusting tube (28) has a longitudinal slot at its end section nearest the return spring (27) and engages loosely at this point with both sides of the transverse pin (32). The valve needle travel is always constant, even when the needle (18) is not aligned with the valve housing, on account of its striking the central stop on the transverse pin (32).
IPC 1-7
IPC 8 full level
F02M 51/06 (2006.01); F02M 51/08 (2006.01); F02M 61/12 (2006.01); F16K 31/06 (2006.01)
CPC (source: EP KR US)
F02M 51/00 (2013.01 - KR); F02M 51/0671 (2013.01 - EP US); Y10S 239/90 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 9104407 A1 19910404; BR 9006921 A 19911126; DE 3931604 A1 19910404; DE 59000662 D1 19930204; EP 0447502 A1 19910925; EP 0447502 B1 19921223; HU 906832 D0 19910930; HU T58864 A 19920330; JP H04501905 A 19920402; KR 920701657 A 19920812; US 5131599 A 19920721
DOCDB simple family (application)
DE 9000629 W 19900816; BR 9006921 A 19900816; DE 3931604 A 19890922; DE 59000662 T 19900816; EP 90911533 A 19900816; HU 683290 A 19900816; JP 51081090 A 19900816; KR 910700329 A 19910329; US 67189191 A 19910328