Fuel injector and fuel-injection system

Patent metadata

Field	Value
Publication number	US-9605636-B2
Application number	US-201313948666-A
Country	US
Kind code	B2
Filing date	Jul 23, 2013
Priority date	Jul 23, 2012
Publication date	Mar 28, 2017
Grant date	Mar 28, 2017

Abstract

A fuel injector may include a central longitudinal axis and may be arranged in a cylinder head of a combustion engine. The fuel injector has an injector body and an adjustment device, the adjustment device including a ring element configured to be arranged in a recess of a cylinder head between the injector body and the cylinder head to align the fuel injector relative to the recess in radial direction. The ring element comprises a magnetic material. A fuel-injection system is also disclosed that includes a cylinder head of an internal combustion engine and a fuel injector as disclosed above.

First claim

What is claimed is:

1. Fuel injector assembly comprising:
a fuel injector having a central longitudinal axis and configured for arrangement in a cylinder head of a combustion engine, the fuel injector comprising an injector body, and
an adjustment device comprising a ring element configured for arrangement in a recess of the cylinder head between the fuel injector and the cylinder head to align the fuel injector relative to the recess,
wherein the ring element comprises a permanent magnet material magnetically adhered to at least one of the cylinder head and the injector body when arranged in the recess to provide a mechanical coupling between the fuel injector body and the cylinder head without additional components for coupling.

2. Fuel injector in accordance with claim 1 , wherein the ring element is a composite comprising at least a first permanent magnet material and a second non-magnetic material.

3. Fuel injector in accordance with claim 2 , wherein at least one of the first material and the second material of the ring element is a sintered material.

4. Fuel injector in accordance with claim 1 , wherein the ring element comprises a magnetic powder.

5. Fuel injector in accordance with claim 4 , wherein the magnetic powder comprises a ferrite or a rare earth metal.

6. Fuel injector in accordance with claim 1 , wherein the ring element comprises stainless steel.

7. Fuel injector in accordance with claim 1 , wherein the ring element comprises plastic.

8. Fuel injector in accordance with claim 1 , wherein the ring element comprises a polyphenylene sulfide or a polyethylene terephthalate.

9. Fuel injector in accordance with claim 1 , wherein the permanent magnet material is a ferromagnetic material.

10. Fuel-injection system, comprising:
a cylinder head of an internal combustion engine,
a fuel injector comprising=an injector body having a central longitudinal axis, and
an adjustment device comprising a ring element arranged in a recess of the cylinder head between the fuel injector and the cylinder head to align the fuel injector relative to the recess of the cylinder head,
wherein the ring element comprises a magnetic material that produces a sufficient magnetic field to provide adhesion between the ring element and at least one of the cylinder head and the injector body to provide a mechanical coupling between the fuel injector and the cylinder head without additional components for coupling.

11. Fuel-injection system according to claim 10 , wherein the ring element abuts the injector body and a surface of the recess.

12. Fuel injector in accordance with claim 10 , wherein the ring element is a composite comprising at least a first magnetic material and a second non- magnetic material.

13. Fuel injector in accordance with claim 12 , wherein at least one of the first material and the second material of the ring element is a sintered material.

14. Fuel injector in accordance with claim 10 , wherein the ring element comprises a magnetic powder.

15. Fuel injector in accordance with claim 14 , wherein the magnetic powder comprises a ferrite or a rare earth metal.

16. Fuel injector in accordance with claim 10 , wherein the ring element comprises stainless steel.

17. Fuel injector in accordance with claim 10 , wherein the ring element comprises plastic.

18. Fuel injector in accordance with claim 10 , wherein the ring element comprises a polyphenylene sulfide or a polyethylene terephthalate.

19. Fuel injector in accordance with claim 10 , wherein the magnetic material is a ferromagnetic material.

Assignees

• Continental Automotive Gmbh

Inventors

• Romeo Ileana
• Soriani Matteo
• Lenzi Francesco

Classifications

• F02M2200/858

  sealing arrangements between injector and engine · CPC title

• F02M61/168

  Assembling; Disassembling; Manufacturing; Adjusting · CPC title

• F02M61/14 Primary

  Arrangements of injectors with respect to engines; Mounting of injectors · CPC title

• F02M61/00

  Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 · CPC title

• F02M61/16 Primary

  Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14 · CPC title