F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
123/135
F02M 71/00 (2006.01) F02M 51/06 (2006.01)
Patent
CA 1119494
ELECTROMAGNETIC FUEL INJECTOR A high flow rate electromagnetic injector value with a rapid response time is disclosed for utilization in a single point fuel injection system. Centrally bored end caps are fixed at the front and rear ends of a tubular injector body and a coil wound on a bobbin is disposed inside body and a coil wound on a bobbin is disposed end cap receives within its bore a valve assembly includ- ing a valve housing and a needle valve with attached arma- ture reciprocally movable against a valve seat to obturate a metering orifice in the valve housing. The valve housing contains fuel inlets for the pressurized entry of fuel into the injector and the needle valve is ported to provide fluid communication to the armature to relieve pressure build-up. The rear end cap threadedly mounts within its bore a core member acting as a stator which extends through a central bobbin bore to form a con- trollable air gap adjacent the armature, and further con- tains internally an adjustment screw and ball member. The ball member and adjustment screw cooperate with a recessed closure spring positioned substantially within the arma- ture to controllably bias the needle valve against the valve seat. Because of its recessed position, the force of the closure spring is applied substantially along the central axis of the injector valve and the ball member prevents tortional windup forces from being generated by the spring. O-ring seals for the bobbin bore are provided in compression between recesses in the bobbin and the slower contracting material of the front end cap and core member to produce extended cold temperature operation.
364630
Blatter Albert
Casey Gary L.
Claxton William B.
Miller John A.
Bendix Corporation (the)
Macrae & Co.
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