Projection welded needle guide

Projection welding is used to join a needle guide member and a valve seat member together preparatory to their assembly into the nozzle of a fuel injector. Various embodiments are disclosed, including various ways for creating the projections. In the preferred embodiment the projections on the end f...

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Bibliographic Details
Main Authors BRIGHT; JOHN S, HUSZAR; GYULA A, SPIERS; DEAN L
Format Patent
LanguageEnglish
Published 17.01.1995
Edition6
Subjects
BLASTING
CLADDING OR PLATING BY SOLDERING OR WELDING
COMBUSTION ENGINES
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MACHINE TOOLS
MECHANICAL ENGINEERING
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
SOLDERING OR UNSOLDERING
SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF
TRANSPORTING
WEAPONS
WELDING
WORKING BY LASER BEAM
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Summary:Projection welding is used to join a needle guide member and a valve seat member together preparatory to their assembly into the nozzle of a fuel injector. Various embodiments are disclosed, including various ways for creating the projections. In the preferred embodiment the projections on the end face of the guide member are made my forming a small holes in the frustoconical surface of the guide plate. As the tool is used to form the small holes in the guide plate, the material of the guide plate is displaced creating small projections from the frustoconial guide surface.
Bibliography:Application Number: US19930080277