EP 0219591 B1 19881228 - METHOD OF MANUFACTURING AN INJECTION NOZZLE HOUSING
Title (en)
METHOD OF MANUFACTURING AN INJECTION NOZZLE HOUSING
Publication
Application
Priority
EP 85890262 A 19851022
Abstract (en)
[origin: US4819871A] To improve the strength properties of the seat face (4) of a nozzle body (1), which seat face cooperates with the tip of a nozzle needle (2) and contains the mouths of fuel injection holes (5), it is proposed to effect a plastic deformation of the nozzle body (1) beyond the yield point adjacent to the seat face (4) for the nozzle needle in such a manner tha the plastic deformation is effected only in part of the wall thickness of the nozzle body adjacent to the seat face (4) for the nozzle needle. To effect that plastic deformation, a mandrel consisting particularly of the nozzle needle (2) is used as a tool. Adjacent to the seat face (4) for the nozzle needle that mandrel has preferably a multiconical or crowned shape. The apparatus for carrying out the process comprises an abutment (10) for the nozzle body (1) and a hydraulic press (11), by which a nozzle needle (2) can be forced against the associated seat face (4) (FIG. 4 ).
IPC 1-7
IPC 8 full level
F02M 61/16 (2006.01); F02M 61/18 (2006.01)
CPC (source: EP US)
F02M 61/166 (2013.01 - EP US); F02M 61/168 (2013.01 - EP US); F02M 61/18 (2013.01 - EP US); Y10T 29/49432 (2015.01 - EP US)
Designated contracting state (EPC)
AT CH DE FR GB IT LI SE
DOCDB simple family (publication)
EP 0219591 A1 19870429; EP 0219591 B1 19881228; AT E39546 T1 19890115; DE 3567062 D1 19890202; JP S62101881 A 19870512; US 4819871 A 19890411
DOCDB simple family (application)
EP 85890262 A 19851022; AT 85890262 T 19851022; DE 3567062 T 19851022; JP 25062086 A 19861021; US 92119586 A 19861021