Valve assembly

A damping valve assembly for a high pressure outlet connector in a supply pump for a common-rail diesel fuel system is disclosed. The valve assembly comprises a valve head 23 moveable between a closed position, in which it seals against a valve seat and an open position. The assembly further compris...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Peter Alban George Collingborn, Timothy M Gould
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS COMBUSTION ENGINES DEVICES FOR VENTING OR AERATING 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 SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	A damping valve assembly for a high pressure outlet connector in a supply pump for a common-rail diesel fuel system is disclosed. The valve assembly comprises a valve head 23 moveable between a closed position, in which it seals against a valve seat and an open position. The assembly further comprises a stem 24 connected to the valve closure 23 having a plurality of longitudinal grooves 30a, 30b, 30c, 30d to allow fluid to flow when the valve head is in either the open or closed position. A retaining ring 22 is connected to the stem and is configured to limit the magnitude of movement between the closed and open positions. The stem may also include a snubbing orifice 26 that provides a restrictive flow path when the valve is closed. The restrictive orifice 26 dampens back pressure waves in the fuel. The invention extends to a pump head and high pressure outlet connector using the valve assembly.