Fuel pumping and injection systems

Details Fuel pumping and injection systems Fuel pumping and injection systems

F - Mech Eng,Light,Heat,Weapons

02

M

F02M 59/46 (2006.01) F02M 39/02 (2006.01) F02M 57/02 (2006.01) F02M 59/26 (2006.01) F02M 59/36 (2006.01) F16K 31/06 (2006.01)

Patent

CA 2213418

A fuel supply means includes an electromagnetically actuated fuel control valve (32) having an armature (60) secured thereto with the armature (60) residing in a fuel-filled armature cavity (56). The armature (60) is electromagnetically cycled between a first position closing the fuel control valve (32) and thereby closing the flow of fuel to a pumping chamber (16) and a second position opening the control valve (32) thereby allowing fuel to flow to the pumping chamber (16). The armature (60) is a flat plate secured to the control valve (32) and constructed with a series of flow through holes and/or slots of prescribed geometry to (i) assist in precluding cavitation erosion and (ii) enhance the hysteresis characteristics of the fuel control valve (32).

Organe d'alimentation en carburant comportant une soupape (32) de régulation de carburant actionnée électromagnétiquement possédant une armature (60) qui lui est fixée, ladite armature (60) résidant dans une cavité (56) remplie de carburant. L'armature (60) est cyclée électromagnétiquement entre une première position qui ferme la soupape (32) de régulation de carburant, ce qui stoppe le flux de carburant arrivant à une chambre d'aspiration (16), et une seconde position qui ouvre la soupape (32) de régulation, ce qui permet au carburant de pénétrer dans la chambre d'aspiration (16). L'armature (60) est une plaque plane fixée à la soupape de régulation (32) et construite avec une série de trous et/ou de fentes d'écoulement d'une géométrie spécifiée destinés (i) à aider à prévenir l'érosion par cavitation et (ii) à améliorer les caractéristiques d'hystérésis de la soupape (32) de régulation de carburant.

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