EP 0445126 B1 19921230 - FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES
Title (en)
FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES
Publication
Application
Priority
DE 3839637 A 19881124
Abstract (en)
[origin: WO9005843A1] A fuel injection nozzle for internal combustion engines has a nozzle body (10) fastened to a nozzle holder (13) by an intermediate disk (11), a valve needle (14) which slides in the nozzle body (10), an intermediate bushing (24) which slides axially in the intermediate disk (11) and a closing spring arrangement consisting of two helical pressure springs arranged one behind the other in a spring chamber (19) in the nozzle body (10). The total stroke of the valve needle (14) executed against the closing spring arrangement is divided into a clearance stroke and a residual stroke by limit stops (25, 28) and counter limit stops (26, 27) on the intermediate bushing (24), intermediate disk (11) and valve needle (14). To obtain a short closing spring arrangement and hence an injection nozzle of short overall length, the second closing spring (22) acts on the intermediate bushing (24) via a spring plate (31) and a sliding bushing (30) surrounding the first closing spring (21), while the first closing spring (21) abuts on the spring plate (31) and, via a second spring plate (34) and a pressure pin (23), on the valve needle (14). Each closing spring (21, 22) therefore acts only during a partial stroke and can be simply dimensioned.
IPC 1-7
IPC 8 full level
F02M 45/08 (2006.01); F02M 61/10 (2006.01); F02M 61/20 (2006.01)
CPC (source: EP)
F02M 45/083 (2013.01)
Citation (examination)
DE 1837606 U 19610914 - HANS VORBACH K G [DE]
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 9005843 A1 19900531; DE 3839637 A1 19900607; DE 58903190 D1 19930211; EP 0445126 A1 19910911; EP 0445126 B1 19921230; JP 2974707 B2 19991110; JP H04501899 A 19920402
DOCDB simple family (application)
DE 8900665 W 19891019; DE 3839637 A 19881124; DE 58903190 T 19891019; EP 89911534 A 19891019; JP 51075889 A 19891019