Fuel distributor

Patent metadata

Field	Value
Publication number	US-9810189-B2
Application number	US-201213609694-A
Country	US
Kind code	B2
Filing date	Sep 11, 2012
Priority date	Sep 15, 2011
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

A fuel distributor, which is used, in particular, for fuel injection systems of mixture-compressing, internal combustion engines having externally supplied ignition, includes a distributor pipe, a first holder and at least one second holder. The distributor pipe has a longitudinal axis. In this connection, the first holder and the second holder are situated at the distributor pipe so as to be axially set apart from one another with respect to the longitudinal axis. The distributor pipe is designed to allow axial length compensation. It is also possible for at least one holder to be designed to allow axial length compensation.

First claim

What is claimed is:

1. A fuel distributor, comprising:
a distributor pipe having a longitudinal axis;
a first holder; and
at least one second holder; wherein the first holder and the second holder are situated at the distributor pipe axially set apart from one another with respect to the longitudinal axis; wherein at least one of the first and second holders is configured to allow axial length compensation, and wherein at least one of the first and second holders is flexurally soft and configured to be displaced in at least an axial direction corresponding to the longitudinal axis.

2. The fuel distributor according to claim 1 , wherein the distributor pipe is configured to allow axial length compensation, and wherein the distributor pipe has at least one compensating location, which is situated between the first holder and the second holder with respect to the longitudinal axis, and at which a pipe wall of the distributor pipe is bellows-shaped.

3. The fuel distributor according to claim 1 , wherein each of the first and second holders is configured to be rigid in a radial direction, which is perpendicular to the axial direction.

4. The fuel distributor according to claim 1 , wherein each of the first and second holders has a screw element and a sleeve, an axial dimension of the sleeve in the axial direction being less than a radial dimension of the sleeve in the radial direction, and the radial direction being both perpendicular to the axial direction and perpendicular to a screw axis of the screw element.

5. The fuel distributor according to claim 1 , wherein at least three holders are provided, holders which are flexurally soft in the axial direction being positioned at the distributor pipe as outer holders, and an inner holder, situated between the outer holders, being configured to be rigid in the axial direction.

6. The fuel distributor according to claim 1 , wherein at least one supporting ring is provided that is mountable on an injector, with the aid of which the injector is positionable at the fuel distributor, the supporting ring having an inner ring and an outer ring, and a play in the axial direction being present between the inner ring and the outer ring.

7. The fuel distributor according to claim 6 , wherein the inner ring has a bearing surface that is at least partially sloped with respect to an axis of the supporting ring; and an O-ring is provided, which is supported at the bearing surface and, in an assembled state, acts upon the inner ring radially inwardly with respect to the axis of the supporting ring.

8. The fuel distributor according to claim 1 , wherein the distributor pipe is configured to allow axial length compensation, and wherein the distributor pipe has a plurality of deep-drawn sleeves, which are assembled at their respective ends, in an axial direction, so as to overlap at respective overlapping regions.

9. The fuel distributor according to claim 8 , wherein a hydraulic connection is provided in at least one of the overlapping regions.

Assignees

• Maier Martin
• Goehner Martin
• Feigl Markus
• Schneider Helmut
• Hautmann Nikolaus
• Uhlenbrock Dietmar
• Uhrig Holger
• Bosch Gmbh Robert

Inventors

• Maier Martin
• Goehner Martin
• Feigl Markus
• Schneider Helmut
• Hautmann Nikolaus
• Uhlenbrock Dietmar
• Uhrig Holger

Classifications

• F02M69/50 Primary

  Arrangement of fuel distributors {, e.g. with means for supplying equal portion of metered fuel to injectors (F02M69/147 takes precedence)} · CPC title

• F02M55/025

  Common rails · CPC title

• F02M2200/26

  Fuel-injection apparatus with elastically deformable elements other than coil springs · CPC title

• F02M2200/857

  characterised by mounting fuel or common rail to engine · CPC title

• F02M2200/315

  for damping fuel pressure fluctuations · CPC title