PRE-PROCESSING METHOD

PROBLEM TO BE SOLVED: To provide a pre-processing method to a nozzle needle seat formed on a nozzle body in a fuel injection device for making the nozzle needle seat to cooperate with a tip of a nozzle needle for controlling injection of fuel into a combustion chamber in an internal combustion engin...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HAUBOLT TILLA, RAO VIJAYANAND, TESCHNER WERNER
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a pre-processing method to a nozzle needle seat formed on a nozzle body in a fuel injection device for making the nozzle needle seat to cooperate with a tip of a nozzle needle for controlling injection of fuel into a combustion chamber in an internal combustion engine, in which fuel injection quantity drift can be reduced in initial operation time. SOLUTION: The nozzle needle seat 9 is loaded with a tool having a roughly similar form to the tip 7 of the nozzle needle, so that plastic deformation is preliminarily provided. COPYRIGHT: (C)2006,JPO&NCIPI