Fuel pump

The fuel pump valve assembly comprises a valve member 32 defining a valve axis (A), and an electromagnetically controlled armature assembly 48 c to reciprocate along the valve axis within an armature chamber 54 of the pump. The pump further comprises a spring 52 to engage a first side 66 of the arma...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Toby Pedley, Erol Kahraman, Adam Mercer
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF WEAPONS
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Beschreibung
Zusammenfassung:	The fuel pump valve assembly comprises a valve member 32 defining a valve axis (A), and an electromagnetically controlled armature assembly 48 c to reciprocate along the valve axis within an armature chamber 54 of the pump. The pump further comprises a spring 52 to engage a first side 66 of the armature assembly to provide a spring force acting in a first direction along the valve axis, and a lift stop 56 provided on a floor surface of the armature chamber to engage a second side 70 of the armature assembly to limit movement of the armature assembly. The armature assembly comprises an armature body 60 formed of a magnetic material, a spring-interfacing portion 68 formed of a different material to the armature body, and a lift stop-interfacing portion 72 formed of a different material to the armature body. The armature assembly provides improved wear resistance characteristics.