Fuel injection system having a fuel-carrying component, a fuel injector and a connecting element

Patent metadata

Field	Value
Publication number	US-9938941-B2
Application number	US-201414158592-A
Country	US
Kind code	B2
Filing date	Jan 17, 2014
Priority date	Jan 18, 2013
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

Abstract

A connecting element for fuel injection systems is used for connecting a fuel injector to a fuel-carrying component. A connecting part is provided, which is fastened on the one side on a shoulder of the fuel-carrying component and, on the other side, on a shoulder of the fuel injector. For this purpose, the connecting part is developed at least partially as a pot spring. A fuel injection system having such a connecting element is also indicated.

First claim

What is claimed is:

1. A connecting device for a fuel injection system for connecting a fuel injector to a fuel-carrying component, comprising:
a connecting part including:
a first end adapted to be fastened on at least one shoulder of the fuel-carrying component, and
a second end adapted to be fastened on at least one shoulder of the fuel injector,
wherein the connecting part includes a hollow-cylindrical slotted wall having a plurality of slots,
wherein adjacent slots of the plurality of slots alternate opening from a first side of the hollow-cylindrical slotted wall and a second side of the hollow-cylindrical slotted wall,
wherein slots that open from the first side of the hollow-cylindrical slotted wall end at a distance from the second side, and slots that open from the second side of the hollow-cylindrical slotted wall end at a distance from the first side.

2. The connecting device as recited in claim 1 , wherein the connecting part includes, at the first end, at least one first inner collar that in a fastened state is adapted to abut at least indirectly against the at least one shoulder of the fuel-carrying component.

3. The connecting device as recited in claim 2 , further comprising:
at least one plate-shaped elastic element, wherein the at least one first inner collar at the first end of the connecting part in the fastened state abuts against the at least one shoulder of the fuel-carrying component by way of the at least one plate-shaped elastic element.

4. The connecting device as recited in claim 2 , further comprising:
a second inner collar provided on the first end, wherein:
the at least one first inner collar and the second inner collar lie across from each other,
an installation cut-out is provided on the first end and extends between the at least one first inner collar and the second inner collar perpendicular to a longitudinal axis of the connecting part, and
the second inner collar in a fastened state is adapted to abut at least indirectly on the at least one shoulder of the fuel-carrying component.

5. The connecting device as recited in claim 1 , wherein the connecting part includes, at the second end, at least one inner collar that in a fastened state is adapted to abut at least indirectly against the at least one shoulder of the fuel injector.

6. The connecting device as recited in claim 5 , further comprising:
at least one plate-shaped elastic element, wherein the inner collar at the second end of the connecting part in the fastened state abuts against the shoulder of the fuel injector by way of the plate-shaped elastic element.

7. The connecting device as recited in claim 5 , wherein the at least one inner collar provided on the second end includes a partially annular collar that is interrupted on the second end of the connecting part by an installation opening.

8. The connecting device as recited in claim 1 , wherein the hollow-cylindrical slotted wall is slotted at least partially in a meander form.

9. The connecting device as recited in claim 1 , wherein the hollow-cylindrical slotted wall is elastic over an entire length from the first end to the second end.

10. The connecting device as recited in claim 1 , wherein adjacent slots of the plurality of slots are offset with respect to one another.

11. A fuel injection system, comprising:
at least one fuel-carrying component;
at least one fuel injector; and
at least one connecting device, the at least one fuel injector connected to the at least one fuel-carrying component via the at least one connecting element, the at least one connecting element including:
a first end adapted to be fastened on at least one shoulder of the at least one fuel-carrying component, and
a second end adapted to be fastened on at least one shoulder of at least one the fuel injector,
wherein the at least one connecting element includes a hollow-cylindrical slotted wall having a plurality of slots,
wherein adjacent slots of the plurality of slots alternate opening from a first end of the hollow-cylindrical slotted wall and a second end of the hollow-cylindrical slotted wall,
wherein slots that open from the first side of the hollow-cylindrical slotted wall end at a distance from the second side, and slots that open from the second side of the hollow-cylindrical slotted wall end at a distance from the first side.

12. The fuel injection system as recited in claim 11 , wherein the fuel injection system is adapted for a mixture-compressing internal combustion engine having an externally supplied ignition.

13. The fuel injection system as recited in claim 11 , wherein the hollow-cylindrical slotted wall is elastic over an entire length from the first end to the second end.

Assignees

• Bosch Gmbh Robert

Inventors

• Fischer Michael
• Knorpp Michael
• Riemer Martin
• Horst Hans-Georg
• Glaser Andreas
• Rogler Philipp
• Herrmann Jan
• Rehwald Andreas
• Mayer Michael
• Scheef Volker
• Reinhardt Wilhelm

Classifications

• F02M2200/856

  characterised by mounting injector to fuel or common rail, or vice versa · CPC title

• F02M37/0017 Primary

  related to fuel pipes or their connections, e.g. joints or sealings (F02M55/004 takes precedence) · CPC title

• F02M2200/306

  using mechanical means · CPC title

• F02M61/14 Primary

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

• F02M2200/853

  involving use of quick-acting mechanism, e.g. clips · CPC title