U.S. patent application number 13/452487 was filed with the patent office on 2012-08-09 for arrangement for cooling the exhaust gas of a motor vehicle.
This patent application is currently assigned to BEHR GmbH & CO. KG. Invention is credited to Claus BECK, Peter Geskes, Damien Henon.
Application Number | 20120199319 13/452487 |
Document ID | / |
Family ID | 34832571 |
Filed Date | 2012-08-09 |
United States Patent
Application |
20120199319 |
Kind Code |
A1 |
BECK; Claus ; et
al. |
August 9, 2012 |
ARRANGEMENT FOR COOLING THE EXHAUST GAS OF A MOTOR VEHICLE
Abstract
A device may include a housing; a heat transfer region located
in the housing and comprising a plurality of heat transfer tubes,
the heat transfer tubes being distributed through an entirety of a
cross-sectional area of at least a portion of the housing; a bypass
duct that branches off from the housing at a location upstream of
the heat transfer region, wherein an opening into the bypass duct
is located in an outer wall of the housing; and an actuating
element comprising a flap and a pivot shaft, the flap being
pivotable about the pivot shaft.
Inventors: |
BECK; Claus; (Esslingen,
DE) ; Geskes; Peter; (Ostfildern, DE) ; Henon;
Damien; (Muhlacker, DE) |
Assignee: |
BEHR GmbH & CO. KG
|
Family ID: |
34832571 |
Appl. No.: |
13/452487 |
Filed: |
April 20, 2012 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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12481371 |
Jun 9, 2009 |
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13452487 |
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10587755 |
Jul 28, 2006 |
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PCT/EP2005/001057 |
Feb 3, 2005 |
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12481371 |
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Current U.S.
Class: |
165/100 |
Current CPC
Class: |
Y02T 10/12 20130101;
F28F 27/02 20130101; F28F 2250/06 20130101; F01N 2240/02 20130101;
Y10T 137/87812 20150401; F01N 3/02 20130101; F28D 21/0003 20130101;
F02M 26/32 20160201; F02M 26/33 20160201; Y02T 10/20 20130101; F02M
26/26 20160201 |
Class at
Publication: |
165/100 |
International
Class: |
F28F 27/02 20060101
F28F027/02 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 9, 2004 |
DE |
10 2004 006 357.5 |
Claims
1. A device comprising: a housing; a heat transfer region located
in the housing and comprising a plurality of heat transfer tubes,
the heat transfer tubes being distributed through an entirety of a
cross-sectional area of at least a portion of the housing; a bypass
duct that branches off from the housing at a location upstream of
the heat transfer region, wherein an opening into the bypass duct
is located in an outer wall of the housing; and an actuating
element comprising a flap and a pivot shaft, the flap being
pivotable about the pivot shaft, wherein the pivot shaft is
arranged adjacent to the outer wall of the housing in a location
upsteam of the heat transfer region, wherein the flap is
selectively pivotable between (i) a first position at which the
flap is substantially perpendicular to a longitudinal axis of the
housing so as to inhibit a flow of exhaust gas from entering the
heat transfer region, and (ii) a second position at which the flap
is substantially parallel to the longitudinal axis of the housing
so as to inhibit the flow of exhaust gas from entering the bypass
duct.
2. The device as claimed in claim 1, wherein the flap is attached
to the shaft by welding, hot-soldering, or compression.
3. The device as claimed in claim 1, wherein the housing contains
an exhaust-gas inlet region and an exhaust-gas outlet region.
4. The device as claimed in claim 1, wherein the housing has
openings in which the pivot shaft is mounted, wherein the openings
are closed after the shaft is mounted in the openings.
5. The device as claimed in claim 1, wherein the heat transfer
region and at least a portion of the bypass duct run parallel to
one another.
6. The device as claimed in claim 1, further comprising a base
plate being arranged in the housing, wherein the base plate
constitutes a stop for the heat transfer tubes.
7. The device as claimed in claim 6, wherein the pivot shaft is
arranged adjacent to the base plate.
8. The device as claimed in claim 1, further comprising a base
plate being arranged in the housing, wherein the heat transfer
tubes are attached to the base plate.
9. The device as claimed in claim 8, wherein the shaft is arranged
adjacent to the base plate.
Description
[0001] This application is a Divisional of U.S. application Ser.
No. 12/481,371, filed Jun. 9, 2009, which is a Continuation of U.S.
application Ser. No. 10/587,755, filed Jul. 28, 2006, now
abandoned, which is a U.S. National Phase Application of
PCT/EP2005/001057, filed Feb. 3,2005, which claims priority from
German Application No. 10-2004-006357.5, filed Feb. 9, 2004, all of
which are incorporated herein by reference.
BACKGROUND
[0002] The invention relates to an arrangement for cooling the
exhaust gas of a motor vehicle.
[0003] DE 199 62 863 A1 discloses an exhaust-gas cooler for
transferring heat between the exhaust gas from an internal
combustion engine of a motor vehicle and a coolant, said
exhaust-gas cooler having a housing which is made up of two or more
parts and comprises an exhaust-gas inlet region, a heat-transfer
region, a bypass duct which runs parallel to said heat-transfer
region and is arranged in the housing, and an exhaust-gas outlet
region. In this case, an actuating element for controlling the flow
of exhaust gas through the heat-transfer region and/or the bypass
duct is provided in the exhaust-gas outlet region which is attached
to the heat-transfer region.
[0004] An arrangement for cooling exhaust gas of this type leaves
something to be desired, amongst other things in terms of
production costs.
[0005] The object of the invention is to improve an arrangement for
cooling exhaust gas of the type mentioned in the introduction.
SUMMARY
[0006] According to one embodiment of the present invention, an
arrangement for cooling exhaust gas is provided with a housing
containing a heat-transfer region, an actuating element for
controlling the flow of exhaust gas through the heat-transfer
region and/or a bypass duct, wherein the housing is integrally
formed in the longitudinal direction of the arrangement for cooling
exhaust gas, and the actuating element is arranged in that region
of the housing which is integrally formed in the longitudinal
direction. In this case, the housing may be divided in the
longitudinal direction, in particular centrally in the longitudinal
direction, in order to simplify mounting.
[0007] The actuating element is preferably in the form of a flap,
with the shaft and the flap part preferably being formed separately
in order to allow mounting in a laterally closed, integral housing,
and being connected, in particular welded or soldered, to one
another after installation.
[0008] The actuating element may be arranged either in the
exhaust-gas inlet region or in the exhaust-gas outlet region, with
arrangement in the exhaust-gas inlet region being preferred.
[0009] The housing preferably contains the heat-transfer region, an
exhaust-gas inlet region and/or an exhaust-gas outlet region. A
diffuser region may also be part of the housing here. As an
alternative, particularly in the case of an integral design of the
housing without division in the longitudinal direction, a diffuser
region may be attached, preferably welded or soldered, to the
housing.
[0010] The bypass duct is preferably arranged in the housing such
that it runs parallel to the heat-transfer region. As an
alternative, the bypass duct may also branch off in the exhaust-gas
inlet region and run outside the housing.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Embodiments of the present invention are explained in detail
in the text which follows using three exemplary embodiments with
reference to the drawings, in which
[0012] FIG. 1 schematically shows a detail of an arrangement for
cooling exhaust gas according to the first exemplary
embodiment,
[0013] FIG. 2 schematically shows a detail of an arrangement for
cooling exhaust gas according to the second exemplary embodiment,
and
[0014] FIG. 3 shows a longitudinal section through an arrangement
for cooling exhaust gas according to the third exemplary
embodiment.
DETAILED DESCRIPTION
[0015] FIG. 1 shows an arrangement 1 for cooling exhaust gas,
having a housing 2, an exhaust-gas inlet region 3 which contains a
flap 4 as an actuating element for controlling the flow of exhaust
gas (indicated by an arrow), a heat-transfer region 5 which adjoins
said exhaust-gas inlet region, and a bypass duct 6 which is
arranged parallel to said heat-transfer region. The exhaust-gas
outlet region (not illustrated) is formed in a corresponding
manner, but without the actuating element.
[0016] The flap 4 can be pivoted about a pivot shaft 7, with the
pivot shaft 7 being arranged adjacent and parallel to a partition
wall 8 between the heat-transfer region 5 and the bypass duct 6
which run parallel to one another, so that the flap 4 guides the
flow of exhaust gas as a function of its position, namely either to
the heat-transfer region 5 or to the bypass duct 6 in the
respective end positions and correspondingly distributed between
the heat-transfer region 5 and the bypass duct 6 in intermediate
positions.
[0017] The housing 2 is integrally formed over the entire region,
so that it assimilates the flap function and the heat-transfer
function and, at present, the bypass function too. Mounting is
carried out from an open end of the housing 2, with positioning and
fixing being carried out by means of stops and/or openings which
are provided in the housing 2 and are tightly closed after
mounting. Other elements, for example a diffuser at the exhaust-gas
inlet, are attached after mounting.
[0018] According to one modification of the first exemplary
embodiment, the housing 2 is centrally divided in the longitudinal
direction, so that the housing 2 can be produced in a simpler
manner and the installed components, such as the flap 4,
heat-transfer region 5 and bypass duct 6 in particular, can be
mounted in a simpler manner. Following assembly, the two housing
halves which form the housing 2 are welded or soldered. The two
housing halves themselves are not divided in the longitudinal
direction, that is to say they are each integrally formed in the
longitudinal direction from the exhaust-gas inlet region 3 to the
exhaust-gas outlet region. In this case, a diffuser may also be
integrally formed with the housing 2 as a result of simpler
mounting, so that each housing half comprises a diffuser half. The
same also applies to the exhaust-gas outlet region.
[0019] According to the second exemplary embodiment, the
heat-transfer region 5 takes up the entire cross section of the
housing 2 and a bypass duct 6 is provided which runs outside the
housing 2 and branches off from the housing 2 upstream of the flap
4. In this case, the pivot shaft 7 of the flap 4 is arranged in the
region of a wall of the housing 2, with the flap 4 being arranged
substantially perpendicular to the longitudinal axis of the housing
and upstream of the heat-transfer region 5 in one end position, and
being arranged substantially parallel to the longitudinal axis of
the housing and upstream of the outlet opening to the bypass duct 6
in its other end position. The bypass duct 6 is again introduced
into the housing 2 downstream of the heat-transfer region 5, in
accordance with the branch illustrated in FIG. 2.
[0020] In accordance with the third exemplary embodiment which is
illustrated in FIG. 3, a diffuser 11 which is subsequently attached
to the housing and serves to expand the flow of exhaust gas is
additionally provided. A flap 4 for controlling the flow of exhaust
gas and distributing the latter to a heat-transfer region 5 and a
bypass duct (not illustrated), which runs parallel to said
heat-transfer region in accordance with the first exemplary
embodiment, is arranged downstream of said diffuser, with the flap
4 having a shaft 7' which protrudes through a shaft bushing with a
seal and is mounted on the other housing side in a bearing 12, with
the bearing 12 being formed by a small deformation of the housing 2
on the outside. The part of the flap 4 which controls the flow of
exhaust gas and at present is substantially formed in the manner of
a plate is welded to the shaft 7' following mounting. In order to
position the heat-transfer region 5 with its individual cooling
pipes 13 and to position the bypass duct in the housing 2, a base
14 is provided which forms a stop for this purpose.
LIST OF REFERENCE SYMBOLS
[0021] 1 Arrangement for cooling exhaust gas [0022] 2 Housing
[0023] 3 Exhaust-gas inlet region [0024] 4 Flap [0025] 5
Heat-transfer region [0026] 6 Bypass duct [0027] 7 Pivot shaft
[0028] 7' Shaft [0029] 8 Partition wall [0030] 11 Diffuser [0031]
12 Bearing [0032] 13 Cooling pipe [0033] 14 Base
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