Patent classifications
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GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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TECHNICAL SUBJECTS COVERED BY FORMER USPC
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TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
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Y10T29/49
Method of mechanical manufacture
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Y10T29/49229
Prime mover or fluid pump making
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Y10T29/49298
Poppet or I.C. engine valve or valve seat making
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Y10T29/49302
Repairing, converting, servicing or salvaging
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Y10T29/49302

Method for refurbishing a valve seat in a fuel injector assembly
10047710 · 2018-08-14 · ·

A method of refurbishing a fuel injector body valve seat. The method includes removing a poppet valve from the valve bore guide, machining the bore and valve seat to remove cavitation, machining to create an undercut a the stress riser, nitriding the valve bore guide and radiusing fuel passage to a sufficient depth to restore hardness thereto.