Holder for fastening a fuel distributor to an internal combustion engine, and fuel injection system having such a holder

Patent metadata

Field	Value
Publication number	US-9863387-B2
Application number	US-201314408816-A
Country	US
Kind code	B2
Filing date	Apr 24, 2013
Priority date	Jun 20, 2012
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

A holder used for mounting at least one component on an add-on structure, e.g., an internal combustion engine, includes: a base element able to be connected to a component; a fixation element, which extends through the through bore of the base element and a damping element disposed in the through bore, in order to mount the base element on the add-on structure; a fixation sleeve; and a damping element surrounding an outer side of the fixation sleeve and form-fittingly connected to the fixation sleeve on at least one side along the longitudinal axis, and on at least one side the damping element is form-fittingly connected to the base element along the longitudinal axis.

First claim

What is claimed is:

1. A holder for mounting a fuel distributor on an internal combustion engine, comprising:
a base element connected to the fuel distributor;
a damping element disposed in a through bore of the base element;
a fixation element which extends through the through bore in order to mount the base element on the internal combustion engine along a longitudinal axis of the through bore of the base element; and
a securing sleeve;
wherein:
the damping element:
at least partially encloses an outer side of the securing sleeve;
is at least one of (a) form-fittingly connected to the securing sleeve along the longitudinal axis and (b) integrally connected to the securing sleeve along the longitudinal axis;
is form-fittingly connected to the base element along the longitudinal axis; and
includes an elastically deformable damping layer and at least one rigid layer; and

at least one of:
the connection of the damping element to the securing sleeve is by connection of a rigid layer of the at least one rigid layer to the securing sleeve; and
the connection of the damping element to the base element is by connection of a rigid layer of the at least one rigid layer to the base element.

2. The holder as recited in claim 1 , wherein:
the at least one rigid layer of the damping element includes:
an inner rigid layer that is form-fittingly connected to the securing sleeve along the longitudinal axis; and
an outer rigid layer that is form-fittingly connected to the base element along the longitudinal axis; and

the elastically deformable damping layer is disposed between the inner rigid layer and the outer rigid layer.

3. The holder as recited in claim 2 , wherein the inner and outer rigid layers and the elastically deformable damping layer are integrally connected to each other.

4. The holder as recited in claim 3 , wherein the inner rigid layer is a metallic inner layer, and the outer rigid outer layer is a metallic outer layer.

5. The holder as recited in claim 2 , wherein the base body has a recess on an inner side, and the outer rigid layer is inserted into the recess of the base body so that the outer rigid layer is form-fittingly connected to the base body along the longitudinal axis.

6. The holder as recited in claim 5 , wherein the damping element is a sleeve slotted along the longitudinal axis.

7. The holder as recited in claim 5 , wherein the form fitting connection of the outer rigid layer to the base body is present on opposite sides of the longitudinal axis.

8. The holder as recited in claim 5 , wherein the form fitting connection of the outer rigid layer to the base body is present circumferentially around the longitudinal axis.

9. The holder as recited in claim 2 , wherein:
the base body includes a recess having a step on an inner side; and
the outer rigid layer:
is inserted into the recess of the base element;
form-fittingly cooperates with the step at the recess of the base element along the longitudinal axis; and
form-fittingly cooperates with a clamping sleeve, which is press-fit in the recess of the base element, along the longitudinal axis.

10. The holder as recited in claim 9 , wherein the damping element is sleeve-shaped.

11. The holder as recited in claim 2 , wherein an outer side of the securing sleeve includes a recess having at least one step, and the inner rigid layer is inserted into the recess of the securing sleeve so that the inner rigid layer form-fittingly cooperates with the step of the securing sleeve along the longitudinal axis.

12. The holder as recited in claim 5 , wherein the inner rigid layer (i) form-fittingly cooperates with the step of the securing sleeve along the longitudinal axis, and (ii) is at least indirectly braced on a head of the fixation element.

13. A holder for mounting a fuel distributor on an internal combustion engine, comprising:
a base element connected to the fuel distributor;
a damping element disposed in a through bore of the base element;
a fixation element which extends through the through bore in order to mount the base element on the internal combustion engine along a longitudinal axis of the through bore of the base element; and
a securing sleeve;
wherein:
the damping element:
at least partially encloses an outer side of the securing sleeve;
is at least one of (a) form-fittingly connected to the securing sleeve along the longitudinal axis and (b) integrally connected to the securing sleeve along the longitudinal axis; and
is form-fittingly connected to the base element along the longitudinal axis; and

at least one of:
(I) a recess is formed in an outer side of the securing sleeve, the recess forms a step, a least a portion of the damping element is arranged in the recess, and the damping element cooperates with the step formed by the recess of the outer side of the securing sleeve for limiting relative movement between the damping element and the securing sleeve in a direction parallel to the longitudinal axis; and
(II) a recess is formed in an inner side of the base element, the recess forms a step, a least a portion of the damping element is arranged in the recess, and the damping element cooperates with the step formed by the recess of the inner side of the base element for limiting relative movement between the damping element and the base element in the direction parallel to the longitudinal axis.

Assignees

• Bosch Gmbh Robert

Inventors

• Wiedmann Christian
• Guengoer Goekhan
• Froihofer Thomas

Classifications

• F02M2200/09

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

• F02M69/465 Primary

  of fuel rails · CPC title

• F02M55/025 Primary

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