Arrangement with a fuel distributor and multiple fuel injection valves

Patent metadata

Field	Value
Publication number	US-10184437-B2
Application number	US-201314396607-A
Country	US
Kind code	B2
Filing date	Apr 2, 2013
Priority date	Apr 26, 2012
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

A fuel injection system has a fuel distributor and multiple fuel injection valves each disposed on a cup of the fuel distributor. At least one injection valve is mounted on the associated cup by way of at least one holding element. An abutment surface is provided on the outer side of the cup. A support surface is configured on the underside of the cup. The holding element is moreover configured as a holding clamp. An abutment surface is provided on an outer side of the fuel injection valve. The holding clamp engages on the one hand behind the abutment surface of the cup and on the other hand behind the abutment surface of the fuel injection valve. The holding clamp furthermore pushes the fuel injection valve toward the support surface.

First claim

What is claimed is:

1. A fuel injection system for high-pressure injection in an internal combustion engine, comprising:
a fuel distributor;
a plurality of fuel injection valves, each of the fuel injection valves being disposed on an associated cup of the fuel distributor;
at least one holding element to mount at least one of the fuel injection valves on the associated cup; and
at least one composite damping element disposed between the fuel injection valve and the cup;
wherein:
a first abutment surface is provided on an outer side of the cup, and a first support surface is configured on an underside of the cup;
an at least partially annular collar is configured on the fuel injection valve, at which collar a second abutment surface on an outer side of the fuel injection valve is configured;
the holding element is configured as a holding clamp engaging on the one hand behind the first abutment surface of the cup and on the other hand behind the second abutment surface of the fuel injection valve and pushing the fuel injection valve toward the first support surface of the cup; and
the at least one composite damping element is disposed between the fuel injection valve and the first support surface of the cup to prevent contact between the fuel injection valve and the first support surface of the cup, wherein the at least one composite damping element has a bent outer segment which fits around an outer side of the collar.

2. The fuel injection system as recited in claim 1 , wherein the first abutment surface of the cup and the second abutment surface of the fuel injection valve face away from one another.

3. The fuel injection system as recited in claim 2 , wherein an at least partially annular setback of the cup is configured on the outer side of the cup, at which setback the first abutment surface of the cup is configured.

4. The fuel injection system as recited in claim 1 , wherein the at least one composite damping element is configured as an at least partially annular composite damping element.

5. The fuel injection system as recited in claim 1 , wherein the holding clamp includes a composite sheet having at least one metal layer and at least one damping layer.

6. The fuel injection system as recited in claim 1 , wherein the at least one composite damping element has at least one metal layer and at least one damping layer.

7. The fuel injection system as recited in claim 1 , wherein the holding element is separate from the at least one composite damping element.

8. The fuel injection system as recited in claim 1 , wherein the first abutment surface of the cup and the support surface of the cup face away from one another.

9. The fuel injection system as recited in claim 1 , wherein the at least one composite damping element has a first metal layer abutting the support surface of the cup.

10. The fuel injection system as recited in claim 9 , wherein the at least one composite damping element has a damping layer abutting the first metal layer.

11. The fuel injection system as recited in claim 10 , wherein the at least one composite damping element has a second metal layer abutting the damping layer.

12. The fuel injection system as recited in claim 1 , wherein the at least one composite damping element has a first metal layer, a damping layer abutting the first metal layer, and a second metal layer abutting the damping layer.

13. A fuel injection system for high-pressure injection in an internal combustion engine, comprising:
a fuel distributor; and
a plurality of fuel injection valves, each of the fuel injection valves being disposed on an associated cup of the fuel distributor, and at least one of the fuel injection valves being mounted on the associated cup by way of at least one holding element;
wherein:
a first abutment surface is provided on an outer side of the cup;
a support surface is configured on an underside of the cup;
the holding element is configured as a holding clamp;
an at least partially annular collar protrudes from a side of the fuel injection valve, at which collar a second abutment surface is provided on an outer side of the fuel injection valve and a second support surface is provided on the fuel injection valve facing toward the support surface of the cup;
the holding clamp engages on the one hand behind the first abutment surface of the cup and on the other hand behind the second abutment surface of the fuel injection valve and pushes the fuel injection valve toward the support surface; and
at least one planar composite damping element is disposed between the second support surface of the fuel injection valve and the support surface of the cup to prevent contact between the fuel injection valve and the support surface of the cup; and

wherein multiple composite damping elements are provided, and wherein a first of the composite damping elements is disposed between the fuel injection valve and the support surface of the cup, and a second of the composite damping elements is disposed between the second abutment surface of the fuel injection valve and the holding clamp.

14. The fuel injection system as recited in claim 13 , wherein the planar composite damping element projects beyond an outer side of the collar.

15. A fuel injection system for high-pressure injection in an internal combustion engine, comprising:
a fuel distributor;
a plurality of fuel injection valves, each of the fuel injection valves being disposed on an associated cup of the fuel distributor;
at least one holding element to mount at least one of the fuel injection valves on the associated cup;
a first composite damping element disposed between the fuel injection valve and the cup, and
a second damping element;
wherein:
a first abutment surface is provided on an outer side of the cup, and a support surface is configured on an underside of the cup;
a second abutment surface is provided on an outer side of the fuel injection valve;
the holding element is configured as a holding clamp engaging on the one hand behind the first abutment surface of the cup and on the other hand behind the second abutment surface of the fuel injection valve and pushing the fuel injection valve toward the support surface of the cup;
the first composite damping element is disposed between the fuel injection valve and the support surface of the cup to prevent contact between the fuel injection valve and the support surface of the cup; and
the second damping element is disposed between the second abutment surface of the fuel injection valve and the holding clamp.

Assignees

• Bosch Gmbh Robert

Inventors

• Pohlmann Jens
• Fischer Michael
• Maess Matthias
• Guengoer Goekhan
• Riemer Martin
• Friedrich Markus
• Rehwald Andreas
• Mayer Michael
• Uhlenbrock Dietmar
• Kannan Venkatesh

Classifications

• F02M2200/855

  using clamp elements or fastening means, e.g. bolts or screws · CPC title

• F02M2200/853

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

• F02M2200/803

  using clamp elements and fastening means; e.g. bolts or screws · CPC title

• F02M2200/8023

  the assembly involving use of quick-acting mechanisms, e.g. clips · CPC title

• F02M2200/09

  Fuel-injection apparatus having means for reducing noise · CPC title