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A swirler inlet valve plate for a fuel injector of a gas turbine engine includes a blocker ring and a pivot sleeve mechanically connected to the blocker ring. The blocker ring is formed from at least a portion of a toroid shape. The blocker ring includes a blocking surface perpendicular to an axis o

A swirler inlet valve plate for a fuel injector of a gas turbine engine includes a blocker ring and a pivot sleeve mechanically connected to the blocker ring. The blocker ring is formed from at least a portion of a toroid shape. The blocker ring includes a blocking surface perpendicular to an axis of the blocker ring formed from at least a portion of an annulus. The blocker ring also includes a flow surface, an inner circumferential surface of the toroidal shape. The pivot sleeve includes a sleeve portion extending adjacent the blocker ring. The sleeve portion includes a rotation transmission mechanism.

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1. A swirler inlet valve plate for a fuel injector of a gas turbine engine, the swirler inlet valve plate comprising: a blocker ring of the fuel injector formed from at least a portion of a toroid shape, the blocker ring including a blocking surface perpendicular to an axis of the blocker ring forme

1. A swirler inlet valve plate for a fuel injector of a gas turbine engine, the swirler inlet valve plate comprising: a blocker ring of the fuel injector formed from at least a portion of a toroid shape, the blocker ring including a blocking surface perpendicular to an axis of the blocker ring formed from at least a portion of an annulus, anda flow surface being an inner circumferential surface of the toroidal shape; anda pivot sleeve connected to the blocker ring, the pivot sleeve including a sleeve portion extending adjacent the blocker ring along the length of the pivot sleeve, the sleeve portion including a rotation transmission mechanism;a pivot pin opening having a polygon-shaped cross section sized to receive a pivot pin, the pivot pin having a portion sized corresponding to the pivot pin opening; anda pivot pin retaining mechanism operable to secure the sleeve portion to the pivot pin and allow interchangeability of the blocker ring. 2. The swirler inlet valve plate of claim 1, wherein the rotation transmission mechanism is the pivot pin opening extending through the sleeve portion. 3. The swirler inlet valve plate of claim 2, wherein the pivot pin opening further comprises a spline. 4. The swirler inlet valve plate of claim 1, wherein the sleeve portion is a tube. 5. The swirler inlet valve plate of claim 1, wherein the pivot pin retaining mechanism is a retainer ring, the retainer ring operable to secure the blocker ring to the pivot pin. 6. The swirler inlet valve plate of claim 1, wherein the portion of the toroid shape forms a ‘C’ about the axis of the blocker ring. 7. The swirler inlet valve plate of claim 1, wherein the blocker ring and the pivot sleeve are formed as a single piece of material. 8. The swirler inlet valve plate of claim 1, wherein the blocker ring and the pivot sleeve are metallurgically bonded as a single piece of material. 9. The swirler inlet valve plate of claim 1, wherein the pivot sleeve includes a limiter disposed opposite the blocker ring and extending along the sleeve portion and extending away from the sleeve portion to limit rotation of the swirler inlet valve plate to a predetermined amount. 10. A swirler inlet valve plate assembly for a fuel injector of a gas turbine engine, the swirler inlet valve plate assembly comprising: the swirler inlet valve plate of claim 1;a swirler inlet valve housing including a housing ring formed from at least a portion of a second toroid shape sized to receive the swirler inlet valve plate,a base knuckle adjacent the housing ring, anda guide knuckle axially aligned and offset from the base knuckle;a pivot pin including a base portion shaped to rotate relative to the base knuckle,a pivot portion shaped to transfer rotational motion to the swirler inlet valve plate through the pivot sleeve, anda guide portion shaped to rotate relative to the guide knuckle;wherein the pivot sleeve is between and aligns with the base knuckle and the guide knuckle, and the pivot pin inserts into the base knuckle, the pivot sleeve, and the guide knuckle to form a hinge. 11. A swirler inlet valve plate for a fuel injector of a gas turbine engine, the swirler inlet valve plate comprising: a blocker ring of the fuel injector including a blocking surface perpendicular to an axis of the blocker ring formed from at least a portion of an annulus, the blocking surface configured to reduce airflow into an injector head of the fuel injector; anda pivot sleeve joined to the blocker ring, the pivot sleeve including a sleeve portion extending adjacent the blocker ring along the length of the pivot sleeve, the sleeve portion being configured to couple with a pivot pin and transfer rotation of the pivot pin to the blocker ring;a pivot pin opening having a polygon-shaped cross section sized to receive a pivot pin, the pivot pin having a portion sized corresponding to the pivot pin opening; anda pivot pin retaining mechanism operable to secure the sleeve portion to the pivot pin and allow interchangeability of the blocker ring. 12. The swirler inlet valve plate of claim 11, wherein the swirler inlet valve plate is removable from a swirler inlet valve plate assembly by decoupling a pivot pin from the swirler inlet valve plate assembly via the pivot pin retaining mechanism. 13. The swirler inlet valve plate of claim 11, wherein the pivot sleeve includes a limiter disposed opposite the blocker ring and extending along the sleeve portion and configured to limit a rotation of the blocker ring to a predetermined amount. 14. A swirler inlet valve plate assembly for a fuel injector of a gas turbine engine, the swirler inlet valve plate assembly comprising: the swirler inlet valve plate of claim 11;a swirler inlet valve housing including a housing ring configured to receive the swirler inlet valve plate, a radially inner portion of the housing ring being a negative of the shape of a radially outer portion of the swirler inlet valve plate,a base knuckle adjacent the housing ring, anda guide knuckle axially aligned and offset from the base knuckle;a pivot pin configured to secure the swirler inlet valve plate to the swirler inlet valve assembly, the pivot pin including a base portion configured to rotate relative to the base knuckle,a pivot portion configured to transfer rotational motion to the swirler inlet valve plate through the pivot sleeve,a guide portion configured to rotate relative to the guide knuckle, anda coupling portion distal to the base portion configured to couple to an actuator shaft. 15. The swirler inlet valve plate assembly of claim 14, further comprising a threaded plug threaded into the base knuckle and configured to retain the pivot pin in the swirler inlet valve plate assembly. 16. A swirler inlet valve plate for a fuel injector of a gas turbine engine, the swirler inlet valve plate comprising: a blocker ring of the fuel injector including a blocker annular portion including a ‘C’ shaped annular disk, anda blocker cylindrical portion including a ‘C’ shaped hollow cylinder extending axially from the blocker annular portion forming an ‘L’ shaped cross-section; anda pivot sleeve adjacent and connected to the blocker ring, the pivot sleeve including a sleeve portion having a tube shape, and a pivot pin opening extending through the tube shape, the pivot pin opening including a regular polygon cross-sectional shape configured to transfer rotation of a pivot pin to the blocker ring, the pivot pin having a portion sized corresponding to the pivot pin opening: anda pivot pin retaining mechanism operable to secure the sleeve portion to the pivot pin and allow interchangeability of the blocker ring. 17. The swirler inlet valve plate of claim 16, wherein the pivot sleeve includes a limiter protruding from the sleeve portion with a triangular cross-section extending along the tube shape of the sleeve portion. 18. A swirler inlet valve plate assembly for a fuel injector of a gas turbine engine, the swirler inlet valve plate assembly comprising: the swirler inlet valve plate of claim 16;a swirler inlet valve housing including a base knuckle adjacent the pivot sleeve, the base knuckle including a hollow cylinder shape,a guide knuckle axially aligned and offset from the base knuckle and adjacent the pivot sleeve, the guide knuckle including a second hollow cylinder shape,wherein the pivot sleeve is located between the base knuckle and the guide knuckle, anda housing ring including, a housing annular portion connected to the base knuckle and the guide knuckle, the housing annular portion being a ‘C’ shaped horizontal segment of an annular disk, wherein the guide knuckle is located between the base knuckle and a first end of the ‘C’ shape proximal to the base knucklea first housing cylindrical portion extending from a radially outer section of housing annular portion between a second end of the ‘C’ shape distal to the base knuckle and the base knuckle, anda second housing cylindrical portion extending from a radially outer section of housing annular portion between the first end and the guide knuckle,wherein the housing annular portion is located radially outward from and axially aligned with the blocker cylindrical portion when the swirler inlet valve plate is in a closed position, and the first housing cylindrical portion and the second housing cylindrical portion are located radially outward from and axially aligned with the blocker annular portion when the swirler inlet valve plate is in the closed position;a pivot pin including a base portion aligned with the base knuckle, the base portion being a cylindrical shape,a pivot portion aligned with the pivot sleeve, the pivot portion being configured with a cross-sectional shape matching the cross-sectional shape of the pivot pin opening, anda guide portion aligned with the guide knuckle, the guide portion being a cylindrical shape;a base bushing located between the base portion and the base knuckle; anda guide bushing located between the guide portion and the guide knuckle. 19. The swirler inlet valve plate assembly of claim 18, further comprising a retaining ring inserted into a retaining ring slot of the base knuckle adjacent the base portion of the pivot pin.