AIR ASSIST FUEL INJECTORS

An air assist fuel injector having an armature (132) and a solenoid for actuating the armature. The armature (132) includes a conduit (150) having a conical portion for delivering liquid fuel and gas to a poppet (134) of the air assist fuel injector. The conduit (150) includes an inlet for receiving the liquid fuel and gas from a cap (102) of the air assist fuel injector. The cap (102) includes a number of channels (104, 106) for delivering the liquid fuel and gas, and the outlets of the channels are located radially inward of the periphery of the inlet to the armature conduit (150). The armature also includes a flow path located between an area upstream of the inlet to the armature and an area downstream of the armature. The flow path may include one or more recesses in the armature or one or more recesses in an armature guide of the air assist fuel injector. An air assist fuel injector having an armature and a solenoid for actuating the armature. The armature includes a conduit having a conical portion for delivering liquid fuel and gas to a poppet of the air assist fuel injector. The conduit includes an inlet for receiving the liquid fuel and gas from a cap of the air assist fuel injector. The cap includes a number of channels for delivering the liquid fuel and gas, and the outlets of the channels are located radially inward of the periphery of the inlet to the armature conduit. The armature also includes a flow path located between an area upstream of the inlet to the armature and an area downstream of the armature. The flow path may include one or more recesses in the armature or one or more recesses in an armature guide of the air assist fuel injector. Injecteur de carburant assisté par air possédant un induit et un solénoïde servant à exciter l'induit. Cet induit comporte un conduit possédant une partie conique servant à alimenter en carburant liquide et en gaz un champignon de l'injecteur de carburant assisté par air. Ce conduit possède une entrée servant à recevoir le carburant liquide et le gaz depuis une coiffe de l'injecteur de carburant. Cette coiffe comprend plusieurs canaux d'alimentation du carburant liquide et du gaz et les sorties de ces canaux sont placées dans un sens radial vers l'intérieur de la circonférence de l'entrée du conduit d'induit. L'induit comprend également un trajet d'écoulement situé entre une zone en amont de l'entrée de l'induit et une zone en aval de l'entrée de l'induit. Ce trajet d'écoulement peut comporter un ou pl