VALVE SEAT ASSEMBLY FOR FUEL INJECTOR

PROBLEM TO BE SOLVED: To provide a method for assembling a valve seat sub-assembly and the valve seat sub-assembly which has improved the consistency in axial direction and in which thermal strain related to resistance welding is avoided by using laser welding. SOLUTION: A solenoid operated fuel inj...

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Bibliographische Detailangaben
1. Verfasser:	BRINN BENJAMIN F JR
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for assembling a valve seat sub-assembly and the valve seat sub-assembly which has improved the consistency in axial direction and in which thermal strain related to resistance welding is avoided by using laser welding. SOLUTION: A solenoid operated fuel injector comprises a valve needle having its axis in longitudinal direction. A valve seat sub-assembly is installed at one end of the valve needle. The valve seat sub-assembly comprises a valve seat 24 having a seating surface 26 and a peripheral sealing surface 28 surrounding the seating surface. The valve seat sub-assembly has a lower needle guide 44 and a vortex-flow disc 50 welded to the valve seat. The valve seat sub-assembly has a radially extending flange 29.