Granted Patent B1

US 12,196,162 · App. 17/986,711 · Granted Jan 14, 2025

Inventor: Matthew T. Riley (Wichita, KS)

Assignee: ASTRON AEROSPACE LLC

F02M47/06F02M21/023F02M21/0254F02M21/0263F02M51/00F02M51/04F02M51/06F02M51/0607F02M51/0642F02M51/0653F02M2200/16

Abstract

Claims (34)

1. A fuel injection system comprising:

a housing surrounding key fuel injection components;

wherein said housing is completely sealed,

wherein said housing defines a in housing and a needle valve assembly housing, the needle valve assembly housing extending from the main housing in a direction away from the main housing;

wherein said key fuel injection components comprise a servo motor, the servo motor being positioned within an interior area of the main housing;

a drive shaft of the servo motor, wherein said drive shaft engages with a stem/plunger that extends into an interior area of said needle valve assembly housing; and

a seal, said seal surrounding a portion of said drive shaft at a location where said drive shaft extends from the main housing into the needle valve assembly housing.

2. The fuel injection system as claimed in claim 1 wherein said housing includes an orifice for leads to said servo motor.

3. The fuel injection system as claimed in claim 1 wherein said stem/plunger includes a tapered pointed end that engages with a valve seat at an outlet of said needle valve assembly housing.

4. The fuel injection system as claimed in claim 3 wherein said valve seat is tapered to mate with said tapered pointed end of said stem/plunger.

5. The fuel injection system as claimed in claim 1 wherein said servo motor is brushless.

6. The fuel injection system as claimed in claim 1 , wherein said a drive shaft includes a square sleeve surrounding said drive shaft.

7. An engine comprising:

a fuel injection system, said fuel injection system comprising:

a housing surrounding key fuel injection components,

wherein said housing is completely sealed,

wherein said housing defines a in housing and a needle valve assembly housing, the needle valve assembly housing extending from the main housing in a direction away from the main housing;

wherein said key fuel injection components comprise a servo motor, the servo motor being positioned within an interior area of the main housing;

a drive shaft of the servo motor, wherein said drive shaft engages with a stem/plunger that extends into an interior area of said needle valve assembly housing;

a seal, said seal surrounding a portion of said drive shaft at a location where said drive shaft extends from the main housing into the needle valve assembly housing; and

an intake prechamber into which said fuel injection system injects fuel.

8. The engine as claimed in claim 7 wherein said housing includes an orifice for leads to said servo motor.

9. The engine as claimed in claim 7 wherein said stem/plunger includes a tapered pointed end that engages with a valve seat at an outlet of said needle valve assembly housing.

10. The engine as claimed in claim 7 wherein said valve seat is tapered to mate with said tapered pointed end of said stem/plunger.

11. The engine as claimed in claim 7 wherein said servo motor is brushless.

12. The engine as claimed in claim 7 wherein said drive shaft that includes a square sleeve surrounding said drive shaft.

13. The fuel injection system as claimed in claim 1 , wherein the rotation of the servo motor causes the stem/plunger to move in a plurality of positions based on a threaded engagement between the stem/plunger and the housing.

14. The engine as claimed in claim 7 , wherein the rotation of the servo motor causes the stem/plunger to move in a plurality of positions based on a threaded engagement between the stem/plunger and the housing.

15. The fuel injection system as claimed in claim 1 , wherein a first fluid is located within the interior area of the main housing, and wherein the first fluid surrounds said servo motor.

16. The fuel injection system as claimed in claim 15 , wherein the first fluid is a lubricating fluid.

17. The fuel injection system as claimed in claim 16 , wherein said seal prevents the first fluid located in the main housing from moving into the interior area of said needle valve assembly housing.

18. The engine as claimed in claim 7 , wherein a first fluid is located within the interior area of the main housing, and wherein the first fluid surrounds said servo motor.

19. The engine as claimed in claim 18 , wherein the first fluid is a lubricating fluid.

20. The engine as claimed in claim 19 , wherein said seal prevents the first fluid located in the main housing from moving into the interior area of said needle valve assembly housing.

Assignments (1)

Continuity (1)

References Cited (163)