Indian Patents. 265338:FEED UNIT

Title of Invention	FEED UNIT
Abstract	The invention relates to a feed unit having a surge chamber 1, a fuel pump 2, which is arranged in the surge chamber 1, and a pump holder 3, the fuel pump 2 being arranged in the pump holder 3 and the pump 3 and the pump holder 3 being fasteed in the surge chamber 1. The pump holder 3 has at least two rods 6 being connected to a mount 5 for the fuel pump 2.

Full Text	PCT/EP2006/066593 - 1 - 2005P17804WOUS Description Feed unit The invention relates to a feed unit having a surge chamber, a fuel pump arranged in the surge chamber and a pump holder, the fuel pump being arranged in the pump holder and the pump holder being fastened in the surge chamber. Feed units of this type are used for feeding fuel from the fuel container of a motor vehicle to an internal combustion engine of the motor vehicle. Feed units of the type mentioned in the introduction have long been known in the prior art. In these units the pump holder of a feed unit serves to arrange the fuel pump in a fixed manner in the surge chamber, while it also has the function of damping vibrations generated by the fuel pump or to prevent them from being transmitted to the surge chamber. Undesired noises can be reduced in this way. Known in particular for damping vibrations of the fuel pump are numerous pump holders which have a first mount for mounting the fuel pump and a second mount for fastening the pump holder to the surge chamber. The two mounts are connected by an interposed damping element which has the function of preventing vibrations from being transmitted from the first mount to the second mount. The damping element is generally an elastic part which receives its elasticity through the selection of material, preferably rubber, or through its configuration, preferably in the form of a spiral or a meander. A disadvantage of these pump holders is their relatively complex shape, so that their manufacture is associated with considerable cost. It is therefore the object of the present invention to provide a feed unit which is of simple construction and is therefore PCT/EP2006/066593 - 2 - 2005P17804WOUS inexpensive. In addition, the feed unit is to be suitable various types of pump. This object is achieved according to the invention in th&fc t~he pump holder has at least two rods which are fastened ^ surge chamber, and in that the rods are connected to a rnOU for the fuel pump. With the use of the rods in the pump holder, the feed \x0-x distinguished by a very simple structure. As a result, the P holder is easily manufactured, making the feed unit m inexpensive. In addition, with the use of rods in the P y holder, elements have been found which, because of structure, firstly possess sufficient strength to act as £lX1 means and, secondly, have sufficient elasticity to are vibrations. The vibrations generated by the fuel pump therefore effectively decoupled from the surge chamber. the Especially good decoupling of the surge chamber froi1 vibrations of the fuel pump is achieved with rods whirf1 a arranged axially parallel to the axial extension of the tu pump, and where the length of the rods between the moun^ a the base of the surge chamber corresponds approximately t° length of the fuel pump. In these cases the rods extend- the base of the surge chamber to the region of the conn^c piece of the fuel pump. Through this arrangement the rod5 for great length, with which especially high elasticity vibration damping is achieved. With relatively smooth-running fuel pumps which tend to p^° less vibration as a result of their structure, the lencjt1 the rods between the mount and the base of the surge clo- the can be reduced, so that the fuel pump is not mounted i11 region of the connecting piece but is mounted centralis relation to its axial extension. PCT/EP2006/066593 - 3 - 2005P17804WOUS An especially simple fastening of the rods in the base of the surge chamber is achieved by means of a plug-in connection, in particular via a press fit. A connection between the rods and the surge chamber which has especially high load capacity is achieved with a material joint, for example by means of welding. In another configuration, retrospective mounting of the rods in the surge chamber is avoided in that the rods are formed integrally on the base of the surge chamber. In a further configuration, the rods are connected to the mount in an especially simple manner by means of a plug-in connection. The pump holder can be adapted with low cost and complexity to different fuel pumps, in particular pump lengths, if the diameter of the rods, starting at the end oriented away from the base of the surge chamber, increases in steps or continuously. By a correspondingly configured diameter of the mount, the mount can thus be arranged at desired heights with respect to the rods. The advantage of this arrangement is that the rods do not need to be adapted separately to different fuel pumps. Rather, one rod size can be used for all variants. According to another configuration, installation of the rods with the mount can also be avoided by a one-piece configuration of the rods with the mount. The mount has a very simple structure if it has a short extension in the axial direction. Provided the rods are configured to extend into the region of the connecting piece of the fuel pump, with such a mount the fuel pump is mounted in the region of the connecting piece. PCT/EP2006/066593 - 4 - 2005P17804WOUS However, as a result of the configuration of the fuel pump, it may be necessary to mount the fuel pump in the middle or at the opposite end, in the region of the pump step. In order nevertheless to achieve sufficient decoupling of the surge chamber from the vibrations of the fuel pump, it has proved advantageous to use a pot-shaped mount and rods of sufficient length. With this configuration the length of the rods can be retained unchanged. Adaptation of the pump holder to the mounting point of the fuel pump in the mount is now achieved via the length of the pot-shaped configuration of the mount. The invention is explained the more detail with reference to an exemplary embodiment. In the drawings: Fig. 1 is a schematic representation of a feed unit according to the invention in section; Fig. 2 shows a section through the surge chamber according to Fig. 1 in a perspective representation, and Fig. 3 shows a further embodiment of the rods of the pump holder. The feed unit represented in Fig. 1 consists of a surge chamber 1 in which is arranged a fuel pump 2. The fuel pump 2 is mounted in a pump holder 3 and is connected via the latter to the base 4 of the surge chamber 1. The pump holder 3 consists of a mount 5 and three rods 6. The rods 6 are pressed into openings in the base 4, passing through a pump prefilter 8. The rods 6 extend parallel to the axis of the fuel pump 2 up to the height of the connecting piece 7, where their ends oriented away from the base 4 are pressed into openings in the mount 5. With regard to its axial extension, the mount 5 of the pump holder 3 is limited to the connecting piece 7 of the fuel pump 2. PCT/EP20G6/066593 - 5 - 2005P17804WOUS A fuel pump 2 is arranged in the surge chamber 1, shown in a cut-away representation in Fig. 2. The fuel pump 2 is mounted in the mount 5 of a pump holder 3, the mount 5 having a pot- shaped configuration, so that it receives almost the entire fuel pump 2. The upper end of 9 of the mount 5 extends into the region of the connecting piece 7 of the fuel pump 2. Connection points 10 into which the three rods 6 are pressed are formed integrally on the upper end 9. The rods 6 are connected by their other ends to the base 4 of the surge chamber 1. Arranged below the mount 5 is a pump prefilter 8 through which the rods 6 pass. The rods 6 are therefore disposed axially parallel to the fuel pump 2. Because the rods 6 extend into the region of the connecting piece 7 of the fuel pump 2, they possess through their length sufficient elasticity to decouple vibrations of the fuel pump 2 effectively with respect to the surge chamber 1. The rod 6 of a pump holder 3 shown in Fig. 3 has a plurality of regions 11 of different diameters, the diameters of the regions 11 increasing in steps from above to below. The transitions between two regions 11 form locking points 12 in which the connection points 10 can be mounted. Through a corresponding configuration of the connection points, the mount 5 can be arranged at different heights with respect to the base 4 of the surge chamber 1. A rod 6 of a pump holder 3 configured in this way can therefore be used for various possible applications. PCT7EP2006/066593 - 6 - 2005P17804WOUS Claims 1. A feed unit having a surge chamber, a fuel pump arranged in the surge chamber and a pump holder, the fuel pump being arranged in the pump holder and the pump holder being fastened in the surge chamber, characterized in that the pump holder (3) has at least two rods (6) which are fastened in the surge chamber (1), and in that the rods (6) are connected to a mount (5) for the fuel pump (2). 2. The feed unit as claimed in claim 1, characterized in that the rods (6) are arranged axially parallel to the axial extension of the fuel pump (2) and the length of the rods (6) between the mount (5) and the base (4) of the surge chamber (1) corresponds approximately to the length of the fuel pump (2). 3. The feed unit as claimed in either of claims 1 and 2, characterized in that the rods (6) are fastened in the base (4) of the surge chamber (1) by means of a plug-in connection. 4. The feed unit as claimed in either of claims 1 and 2, characterized in that the rods (6) are connected to the base (4) of the surge chamber (1) by a material joint. 5. The feed unit as claimed in either of claims 1 and 2, characterized in that the rods (6) are formed integrally on the base (4) of the surge chamber (1). 6. The feed unit as claimed in any one of the preceding claims, characterized in that the rods (6) are connected PCT/EP2006/066593 - 7 - 2005P17804WOUS to the mount (5) by means of a plug-in connection. 7. The feed unit as claimed in claim 6, characterized in that the diameter of the rods (6), starting at the end oriented away from the base (4) of the surge chamber (1), increases in steps or continuously. 8. The feed unit as claimed in any one of the preceding claims 1 to 5, characterized in that the rods (6) are formed in one piece with the mount (5). The invention relates to a feed unit having a surge chamber 1, a fuel pump 2, which is arranged in the surge chamber 1, and a pump holder 3, the fuel pump 2 being arranged in the pump holder 3 and the pump 3 and the pump holder 3 being fasteed in the surge chamber 1. The pump holder 3 has at least two rods 6 being connected to a mount 5 for the fuel pump 2.

Full Text

PCT/EP2006/066593 - 1 -
2005P17804WOUS
Description
Feed unit
The invention relates to a feed unit having a surge chamber, a
fuel pump arranged in the surge chamber and a pump holder, the
fuel pump being arranged in the pump holder and the pump holder
being fastened in the surge chamber. Feed units of this type
are used for feeding fuel from the fuel container of a motor
vehicle to an internal combustion engine of the motor vehicle.
Feed units of the type mentioned in the introduction have long
been known in the prior art. In these units the pump holder of
a feed unit serves to arrange the fuel pump in a fixed manner
in the surge chamber, while it also has the function of damping
vibrations generated by the fuel pump or to prevent them from
being transmitted to the surge chamber. Undesired noises can be
reduced in this way. Known in particular for damping vibrations
of the fuel pump are numerous pump holders which have a first
mount for mounting the fuel pump and a second mount for
fastening the pump holder to the surge chamber. The two mounts
are connected by an interposed damping element which has the
function of preventing vibrations from being transmitted from
the first mount to the second mount. The damping element is
generally an elastic part which receives its elasticity through
the selection of material, preferably rubber, or through its
configuration, preferably in the form of a spiral or a meander.
A disadvantage of these pump holders is their relatively
complex shape, so that their manufacture is associated with
considerable cost.
It is therefore the object of the present invention to provide
a feed unit which is of simple construction and is therefore

PCT/EP2006/066593 - 2 -
2005P17804WOUS
inexpensive. In addition, the feed unit is to be suitable
various types of pump.
This object is achieved according to the invention in th&fc
t~he
pump holder has at least two rods which are fastened ^
surge chamber, and in that the rods are connected to a rnOU
for the fuel pump.
With the use of the rods in the pump holder, the feed \x0-x
distinguished by a very simple structure. As a result, the P
holder is easily manufactured, making the feed unit m
inexpensive. In addition, with the use of rods in the P y
holder, elements have been found which, because of
structure, firstly possess sufficient strength to act as £lX1
means and, secondly, have sufficient elasticity to
are
vibrations. The vibrations generated by the fuel pump
therefore effectively decoupled from the surge chamber.
the
Especially good decoupling of the surge chamber froi*1
vibrations of the fuel pump is achieved with rods whirf1 a
arranged axially parallel to the axial extension of the tu
pump, and where the length of the rods between the moun^ a
the base of the surge chamber corresponds approximately t°
length of the fuel pump. In these cases the rods extend-
the base of the surge chamber to the region of the conn^c
piece of the fuel pump. Through this arrangement the rod5
for
great length, with which especially high elasticity
vibration damping is achieved.
With relatively smooth-running fuel pumps which tend to p^°
less vibration as a result of their structure, the lencjt*1
the rods between the mount and the base of the surge clo-
the
can be reduced, so that the fuel pump is not mounted i11
region of the connecting piece but is mounted centralis
relation to its axial extension.

PCT/EP2006/066593 - 3 -
2005P17804WOUS
An especially simple fastening of the rods in the base of the
surge chamber is achieved by means of a plug-in connection, in
particular via a press fit.
A connection between the rods and the surge chamber which has
especially high load capacity is achieved with a material
joint, for example by means of welding.
In another configuration, retrospective mounting of the rods in
the surge chamber is avoided in that the rods are formed
integrally on the base of the surge chamber.
In a further configuration, the rods are connected to the mount
in an especially simple manner by means of a plug-in
connection.
The pump holder can be adapted with low cost and complexity to
different fuel pumps, in particular pump lengths, if the
diameter of the rods, starting at the end oriented away from
the base of the surge chamber, increases in steps or
continuously. By a correspondingly configured diameter of the
mount, the mount can thus be arranged at desired heights with
respect to the rods. The advantage of this arrangement is that
the rods do not need to be adapted separately to different fuel
pumps. Rather, one rod size can be used for all variants.
According to another configuration, installation of the rods
with the mount can also be avoided by a one-piece configuration
of the rods with the mount.
The mount has a very simple structure if it has a short
extension in the axial direction. Provided the rods are
configured to extend into the region of the connecting piece of
the fuel pump, with such a mount the fuel pump is mounted in
the region of the connecting piece.

PCT/EP2006/066593 - 4 -
2005P17804WOUS
However, as a result of the configuration of the fuel pump, it
may be necessary to mount the fuel pump in the middle or at the
opposite end, in the region of the pump step. In order
nevertheless to achieve sufficient decoupling of the surge
chamber from the vibrations of the fuel pump, it has proved
advantageous to use a pot-shaped mount and rods of sufficient
length. With this configuration the length of the rods can be
retained unchanged. Adaptation of the pump holder to the
mounting point of the fuel pump in the mount is now achieved
via the length of the pot-shaped configuration of the mount.
The invention is explained the more detail with reference to an
exemplary embodiment. In the drawings:
Fig. 1 is a schematic representation of a feed unit according
to the invention in section;
Fig. 2 shows a section through the surge chamber according to
Fig. 1 in a perspective representation, and
Fig. 3 shows a further embodiment of the rods of the pump
holder.
The feed unit represented in Fig. 1 consists of a surge chamber
1 in which is arranged a fuel pump 2. The fuel pump 2 is
mounted in a pump holder 3 and is connected via the latter to
the base 4 of the surge chamber 1.
The pump holder 3 consists of a mount 5 and three rods 6. The
rods 6 are pressed into openings in the base 4, passing through
a pump prefilter 8. The rods 6 extend parallel to the axis of
the fuel pump 2 up to the height of the connecting piece 7,
where their ends oriented away from the base 4 are pressed into
openings in the mount 5. With regard to its axial extension,
the mount 5 of the pump holder 3 is limited to the connecting
piece 7 of the fuel pump 2.

PCT/EP20G6/066593 - 5 -
2005P17804WOUS
A fuel pump 2 is arranged in the surge chamber 1, shown in a
cut-away representation in Fig. 2. The fuel pump 2 is mounted
in the mount 5 of a pump holder 3, the mount 5 having a pot-
shaped configuration, so that it receives almost the entire
fuel pump 2. The upper end of 9 of the mount 5 extends into the
region of the connecting piece 7 of the fuel pump 2. Connection
points 10 into which the three rods 6 are pressed are formed
integrally on the upper end 9. The rods 6 are connected by
their other ends to the base 4 of the surge chamber 1. Arranged
below the mount 5 is a pump prefilter 8 through which the rods
6 pass. The rods 6 are therefore disposed axially parallel to
the fuel pump 2. Because the rods 6 extend into the region of
the connecting piece 7 of the fuel pump 2, they possess through
their length sufficient elasticity to decouple vibrations of
the fuel pump 2 effectively with respect to the surge chamber
1.
The rod 6 of a pump holder 3 shown in Fig. 3 has a plurality of
regions 11 of different diameters, the diameters of the regions
11 increasing in steps from above to below. The transitions
between two regions 11 form locking points 12 in which the
connection points 10 can be mounted. Through a corresponding
configuration of the connection points, the mount 5 can be
arranged at different heights with respect to the base 4 of the
surge chamber 1. A rod 6 of a pump holder 3 configured in this
way can therefore be used for various possible applications.

PCT7EP2006/066593 - 6 -
2005P17804WOUS
Claims
1. A feed unit having a surge chamber, a fuel pump arranged
in the surge chamber and a pump holder, the fuel pump
being arranged in the pump holder and the pump holder
being fastened in the surge chamber, characterized in that
the pump holder (3) has at least two rods (6) which are
fastened in the surge chamber (1), and in that the rods
(6) are connected to a mount (5) for the fuel pump (2).
2. The feed unit as claimed in claim 1, characterized in that
the rods (6) are arranged axially parallel to the axial
extension of the fuel pump (2) and the length of the rods
(6) between the mount (5) and the base (4) of the surge
chamber (1) corresponds approximately to the length of the
fuel pump (2).
3. The feed unit as claimed in either of claims 1 and 2,
characterized in that the rods (6) are fastened in the
base (4) of the surge chamber (1) by means of a plug-in
connection.
4. The feed unit as claimed in either of claims 1 and 2,
characterized in that the rods (6) are connected to the
base (4) of the surge chamber (1) by a material joint.
5. The feed unit as claimed in either of claims 1 and 2,
characterized in that the rods (6) are formed integrally
on the base (4) of the surge chamber (1).
6. The feed unit as claimed in any one of the preceding
claims, characterized in that the rods (6) are connected

PCT/EP2006/066593 - 7 -
2005P17804WOUS
to the mount (5) by means of a plug-in connection.
7. The feed unit as claimed in claim 6, characterized in that
the diameter of the rods (6), starting at the end oriented
away from the base (4) of the surge chamber (1), increases
in steps or continuously.
8. The feed unit as claimed in any one of the preceding
claims 1 to 5, characterized in that the rods (6) are
formed in one piece with the mount (5).

The invention relates to a feed unit having a
surge chamber 1, a fuel pump 2, which is arranged
in the surge chamber 1, and a pump holder 3, the fuel
pump 2 being arranged in the pump holder 3 and the
pump 3 and the pump holder 3 being fasteed in the
surge chamber 1. The pump holder 3 has at least two
rods 6 being connected to a mount 5 for the fuel
pump 2.

Documents:

01021-kolnp-2008-abstract.pdf

01021-kolnp-2008-claims.pdf

01021-kolnp-2008-correspondence others.pdf

01021-kolnp-2008-description complete.pdf

01021-kolnp-2008-drawings.pdf

01021-kolnp-2008-form 1.pdf

01021-kolnp-2008-form 2.pdf

01021-kolnp-2008-form 3.pdf

01021-kolnp-2008-form 5.pdf

01021-kolnp-2008-international publication.pdf

01021-kolnp-2008-international search report.pdf

01021-kolnp-2008-pct priority document notification.pdf

01021-kolnp-2008-pct request form.pdf

01021-kolnp-2008-translated copy of priority document.pdf

1021-KOLNP-2008-(16-04-2013)-CORRESPONDENCE.pdf

1021-KOLNP-2008-(16-04-2013)-FORM 3.pdf

1021-KOLNP-2008-(24-02-2014)--CORRESPONDENCE.pdf

1021-KOLNP-2008-(24-02-2014)-ABSTRACT.pdf

1021-KOLNP-2008-(24-02-2014)-CLAIMS.pdf

1021-KOLNP-2008-(24-02-2014)-CORRESPONDENCE.pdf

1021-KOLNP-2008-(24-02-2014)-DESCRIPTION (COMPLETE).pdf

1021-KOLNP-2008-(24-02-2014)-DRAWINGS.pdf

1021-KOLNP-2008-(24-02-2014)-FORM-1.pdf

1021-KOLNP-2008-(24-02-2014)-FORM-13.pdf

1021-KOLNP-2008-(24-02-2014)-FORM-2.pdf

1021-KOLNP-2008-(24-02-2014)-FORM-3.pdf

1021-KOLNP-2008-(24-02-2014)-FORM-5.pdf

1021-KOLNP-2008-(24-02-2014)-FORM-6-1.pdf

1021-KOLNP-2008-(24-02-2014)-FORM-6.pdf

1021-KOLNP-2008-(24-02-2014)-OTHERS.pdf

1021-KOLNP-2008-(24-02-2014)-PA.pdf

1021-KOLNP-2008-(24-02-2014)-PETITION UNDER RULE 137.pdf

1021-KOLNP-2008-ASSIGNMENT.pdf

1021-KOLNP-2008-CORRESPONDENCE OTHERS 1.1.pdf

1021-KOLNP-2008-CORRESPONDENCE OTHERS-1.1.pdf

1021-kolnp-2008-form 18.pdf

1021-KOLNP-2008-FORM 26.pdf

1021-KOLNP-2008-FORM 6.pdf

1021-KOLNP-2008-OTHERS.pdf

1021-KOLNP-2008-REPLY TO EXAMINATION REPORT.pdf

1021-KOLNP-2008-TRANSLATED COPY OF PRIORITY DOCUMENT 1.1.pdf

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Patent Number

265338

Indian Patent Application Number

1021/KOLNP/2008

PG Journal Number

08/2015

Publication Date

20-Feb-2015

Grant Date

19-Feb-2015

Date of Filing

10-Mar-2008

Name of Patentee

CONTINENTAL AUTOMOTIVE GMBH

Applicant Address

VAHRENWALDER STRASSE 9, 30164 HANNOVER,MUNICH

Inventors:

#	Inventor's Name	Inventor's Address
1	KARL ECK	36, 60318 FRANKFURTER
2	MATTHIAS KADLER	MAINZER LANDSTRASSE 55 64521 GROSS-GERAU
3	MARTIN MAASZ	NEUGARTENSTR. 34, 65834 SULZBACH
4	OLIVER SCHONERT	SCHMIDT-SCHOLL-WEG 6 59757 ARNSBERG
5	MICHAEL TEICHERT	FRIEDRICH EBERT STR. 15 65824 SCHWALBACH
6	DIETER HAGIST	HIRSCHSPRUNG 8, 56112 LAHNSTEIN

PCT International Classification Number

F02M 37/10

PCT International Application Number

PCT/EP2006/066593

PCT International Filing date

2006-09-21

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	102005047546.9	2005-09-30	Germany