a fuel injection valve
The technology of fuel injection valve and needle valve is applied to direct injection in gasoline cylinder. In the field, it can solve the problems of incomplete closing of the injector and affect the precise injection of the injector, and achieve the effect of increasing the electromagnetic force, improving the capacity, and reducing the time interval
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[0025] A fuel injection valve 1 ( figure 1 ):
[0026] Including magnetic core 2, coil 3, armature 4, magnetic ring 5, damping spring 6, damping block 7, outer shell 8, limit core 9, control spring 10, spring seat 11, needle valve 12, sealing ball 13, sealing ball Seat 14.
[0027] Its assembly method:
[0028] 1), press the coil 3 assembly (the coil skeleton needs to be fixed) into the coil slot 2b ( figure 2 ), the coil leads are drawn out from hole 2a;
[0029] 2), the coil groove 2b and the coil hole 2a are injected to fix the coil;
[0030] 3) Fix the limit core 9 in the inner cavity of the magnetic core 2 by means of interference;
[0031] 4) Connect the magnetic ring 5 and the magnetic core 2 together by welding at the outer circular joint (concentricity must be ensured);
[0032] 5), the needle valve 12 is welded together with the spring seat 11, and the armature 4 is set on the needle valve;
[0033] 6) Push the armature 4 up until it touches the lower end su...
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