Wear compensating plunger-and-barrel seal for hydraulic fuel injectors

In a fuel injector having a plunger-and-barrel pumping assembly, a sealing member is mounted within an annulus of a plunger to prevent the dilution of pressurized fuel within the barrel of the tool. The sealing member includes a hollowed cavity which traps upward moving pressurized fuel and forces a...

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Bibliographische Detailangaben
Hauptverfasser:	KLINGBEIL DAVID M, GASPER MARK A
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES CYLINDERS ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING PISTONS SEALINGS SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	In a fuel injector having a plunger-and-barrel pumping assembly, a sealing member is mounted within an annulus of a plunger to prevent the dilution of pressurized fuel within the barrel of the tool. The sealing member includes a hollowed cavity which traps upward moving pressurized fuel and forces an extension or wiper of the sealing member upward and outward into sealing engagement with the inner surface or bore of the barrel.