U.S. patent application number 15/749679 was filed with the patent office on 2018-08-09 for exhaust housing.
The applicant listed for this patent is Tenneco GmbH. Invention is credited to Markus GEMINN, Alexander HORNUNG, Adam KARCH, Andreas STEIGERT.
Application Number | 20180223720 15/749679 |
Document ID | / |
Family ID | 56611264 |
Filed Date | 2018-08-09 |
United States Patent
Application |
20180223720 |
Kind Code |
A1 |
HORNUNG; Alexander ; et
al. |
August 9, 2018 |
EXHAUST HOUSING
Abstract
The disclosure relates to a gas-carrying exhaust gas housing of
an internal combustion engine comprising: a manifold section,
having a central axis and multiple manifold pipe connectors, for
securing on a flange plate for connecting to a cylinder of an
internal combustion engine; a catalyst housing section having a
central axis; and an exhaust pipe connector section provided
downstream of the catalyst housing section, for connecting to an
onward-conveying exhaust system. In addition, together with
catalyst housing section and exhaust pipe connector section, the
manifold section forms a two-shell exhaust housing having a first
half shell and a second half shell, wherein the two half shells
have a separation plane (T) running parallel to the central axis at
least in sections, wherein the manifold section has multiple
integral manifold pipe connectors which can be attached directly to
a flange plate.
Inventors: |
HORNUNG; Alexander;
(Lemberg, DE) ; GEMINN; Markus; (St. Martin,
DE) ; STEIGERT; Andreas; (Lambrecht, DE) ;
KARCH; Adam; (Aichwald, DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Tenneco GmbH |
Edenkoben |
|
DE |
|
|
Family ID: |
56611264 |
Appl. No.: |
15/749679 |
Filed: |
August 5, 2016 |
PCT Filed: |
August 5, 2016 |
PCT NO: |
PCT/EP2016/068774 |
371 Date: |
February 1, 2018 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F01N 13/1888 20130101;
F01N 13/1894 20130101; F01N 2470/06 20130101; F01N 13/10 20130101;
F01N 2450/22 20130101; F01N 13/102 20130101; F01N 13/1877
20130101 |
International
Class: |
F01N 13/18 20060101
F01N013/18; F01N 13/10 20060101 F01N013/10 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 10, 2015 |
DE |
10 2015 113 137.4 |
Claims
1. A gas-carrying exhaust gas housing of an internal combustion
engine comprising: a manifold section, having a central axis and
multiple manifold pipe connectors, for securing on a flange plate
or connecting to a cylinder of an internal combustion engine; a
catalyst housing section having a central axis; and an exhaust pipe
connector section provided downstream of the catalyst housing
section, for connecting to an onward-conveying exhaust system,
wherein, together with catalyst housing section and exhaust pipe
connector section, the manifold section forms a two-shell exhaust
housing having a first half shell and a second half shell, wherein
the two half shells have a separation plane T running parallel to
the central axis at least in sections, wherein the manifold section
has multiple integral manifold pipe connectors which can be
attached directly to a flange plate, wherein the respective
manifold pipe connector is configured as a rim hole inside the
first half shell.
2. The gas-carrying exhaust gas housing according to claim 1,
wherein the manifold section has a connection plane A for a flange
plate, which is spanned by the manifold pipe connectors, wherein
the manifold pipe connectors additionally span a connection plane K
at the manifold section, and that the separation plane T is aligned
parallel to the connection plane A and parallel to the connection
plane K at least in the region of the manifold section.
3. The gas-carrying exhaust gas housing according to claim 2,
wherein the respective manifold pipe connector is configured
straight or cylindrically and/or the manifold pipe connectors are
configured identically in terms of their form and size.
4. The gas-carrying exhaust gas housing according to claim 3,
wherein manifold pipes are provided, which are to be secured as a
separate component between the respective manifold pipe connector
and the flange plate.
5. The gas-carrying exhaust gas housing according to claim 4,
wherein the respective manifold pipe is configured cylindrically
and/or the manifold pipes are configured identically in terms of
their form and size.
6. The gas-carrying exhaust gas housing of claim 1, wherein the
respective half shell has a connection edge, by means of which the
two half shells can be firmly bonded or positively connected to one
another, wherein the separation plane T which is spanned by means
of the respective connection edge is configured in a curved manner
at least in sections.
7. The gas-carrying exhaust gas housing according to claim 1,
wherein he manifold section is located laterally offset from the
catalyst housing section with respect to the central axis, wherein
the central axis of the manifold section and the central axis of
the catalyst housing section are aligned approximately parallel to
one another.
8. The gas-carrying exhaust gas housing according to claim 1,
wherein a two-shell external housing is provided, which is located
at a distance from the exhaust housing, wherein an insulating air
gap is provided between the external housing and the exhaust
housing.
9. The gas-carrying exhaust gas housing according to claim 1 having
a flange plate, which is secured in a gas-tight manner to the
manifold pipe connectors or to the manifold pipes.
10. An exhaust system for a motor vehicle having a gas-carrying
exhaust gas housing according to claim 1.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a National Stage of International
Application No. PCT/EP2016/068774, filed on Aug. 5, 2016, and
published in German as WO2017/25470 A1 on Feb. 16, 2017. This
application claims the priority to German Patent Application No. 10
2015 113 137.4, filed on Aug. 10, 2015. The entire disclosures of
the above applications are incorporated herein by reference.
FIELD
[0002] The disclosure relates to a gas-carrying exhaust gas housing
of an internal combustion engine comprising: a manifold section,
having a central axis and multiple manifold pipe connectors, for
securing on a flange plate for connecting to a cylinder of an
internal combustion engine; a catalyst housing section having a
central axis; and an exhaust pipe connector section provided
downstream of the catalyst housing section, for connecting to an
onward-conveying exhaust system, wherein, together with catalyst
housing section and exhaust pipe connector section, the manifold
section forms a two-shell exhaust housing having a first half shell
and a second half shell, wherein the two half shells have a
separation plane running parallel to the central axis at least in
sections, wherein the manifold section has multiple integral
manifold pipe connectors which can be attached directly to a flange
plate or a cylinder head.
BACKGROUND
[0003] This section provides background information related to the
present disclosure which is not necessarily prior art.
[0004] An air-gap insulated exhaust housing is already known from
U.S. Pat. No. 6,555,070 B1. Said air-gap insulated exhaust housing
has a multi-piece gas-carrying internal housing and a two-shell
external housing or combination housing. The internal housing has a
manifold section, a catalyst housing and an exhaust pipe connector,
wherein the manifold section is attached via an inlet channel and
the exhaust pipe connector is attached via an outlet channel to the
catalyst housing. Five housing parts connected after one another
are consequently provided in order to form the gas-carrying
internal housing.
[0005] Both U.S. Pat. No. 5,419,125 A and U.S. Pat. No. 5,589,144 A
describe a two-shell catalyst housing, at the front-side end of
which formed parts for receiving angled manifold pipes are provided
in the region of the respective shell edge. The manifold itself is
formed from four angled manifold pipes which are connected at the
end side with the catalyst housing, on the one hand, and with a
flange plate, on the other hand.
[0006] A two-shell manifold housing having manifold pipes and a
catalyst housing is known from WO 2015/040531 A1, wherein the
manifold pipes and the catalyst housing are an integral part of the
manifold housing.
SUMMARY
[0007] This section provides a general summary of the disclosure,
and is not a com-prehensive disclosure of its full scope or all of
its features.
[0008] The object of the disclosure is to configure and arrange a
gas-carrying internal housing in such a manner that a simplified
assembly is guaranteed.
[0009] The object is achieved according to the disclosure in that
the respective manifold pipe connector is configured as a rim hole
inside the first half shell.
[0010] As a result, the manifold section, the catalyst housing
section and the exhaust pipe connector section are integral parts
of the two-shell exhaust housing, and it is no longer necessary to
assemble or connect multiple parts which are attached after one
another in the direction of flow separately, but that is not
all.
[0011] Rim holes can be welded better than formed parts inside the
shell edge, since a gap and, thus, a break in the material, which
adversely influences the welding process, is omitted between the
housing halves.
[0012] The catalyst housing section, in particular the rim holes,
can also be easily calibrated by processing the exhaust housing in
a suitable manner. The exhaust housing can consequently be secured
or welded with less outlay to a flange plate or a cylinder by means
of the exhaust pipe connector section and the rim holes.
[0013] Deep-drawn components for exhaust system segments having
such a complex construction require huge outlay during realization.
Since the degree of forming plays a crucial role, single-piece
deep-drawn components are actually out of the question for such
segments. Therefore, multi-piece designs, which can also be found
in the prior art, tend to fall within the framework of what is
considered by the average person skilled in the art.
[0014] To this end, it can also be advantageous if the manifold
section has a connection plane A for a flange plate, which is
spanned by the manifold pipe connectors, wherein the manifold pipe
connectors additionally span a connection plane K at the manifold
section, and if the separation plane T is aligned parallel to the
connection plane A and parallel to the connection plane K at least
in the region of the manifold section. In contrast to the prior
art, the separation plane T is aligned such that the manifold pipe
connectors can be configured as rim holes. Accordingly, the
separation plane T does not intersect the manifold pipe connectors
or the respective manifold pipe connector.
[0015] It can additionally be advantageous if the respective
manifold pipe connector is configured straight or free of bends or
cylindrically and/or the manifold pipe connectors are configured
identically in terms of their form and size. As already explained,
deep-drawn components for exhaust system segments having such a
complex construction require a huge outlay during realization. The
afore-mentioned configuration of the manifold pipe connectors keeps
this outlay in check.
[0016] It can furthermore be advantageous if the connection plane A
is aligned approximately parallel to the central axis of the
manifold section. Consequently, no pipe curvature of the manifold
pipe connectors is necessary. A very short installation space and
very short connection routes up to the cylinder can be achieved.
The main direction of collective flow of the collected manifold
flows inside the manifold section runs fundamentally parallel to
the central axis of the manifold section.
[0017] In this case, it can be advantageously envisaged that
manifold pipes be provided, which are to be secured as a separate
component between the respective manifold pipe connector and the
flange plate. Greater distances between the manifold section or the
respective manifold pipe connector and the cylinder can be bridged
by means of the manifold pipes, particularly if the manifold pipe
connectors are configured as rim holes.
[0018] It can be of particular importance for the present
disclosure if the respective manifold pipe is configured
cylindrically and/or the manifold pipes are configured identically
in terms of their form and size. Since the manifold section having
the integral manifold pipe connectors is already suitable for
attaching to the cylinder head in terms of the architecture, the
manifold pipes to be used can be very simply embodied to bridge a
greater distance. With the exception of the distance, there is no
need for any further adjustments to be made between the
architecture of the manifold pipe connectors, on the one hand, and
the cylinder, on the other hand.
[0019] It can be advantageous in connection with the configuration
and arrangement according to the disclosure, if the respective half
shell has a connection edge, by means of which the two half shells
can be firmly bonded or positively connected to one another,
wherein the separation plane T which is spanned by means of the
respective connection edge is configured in a curved manner at
least in sections. The curved configuration of the connection edge
results in better weldability and simplifies the installation
process on assembling the half shells. In addition, it makes it
possible to save on material, resulting in less waste following
forming.
[0020] It can furthermore be advantageous if the manifold section
is located laterally offset from the catalyst housing section with
respect to the central axis, wherein the central axis of the
manifold section and the central axis of the catalyst housing
section are aligned approximately parallel to one another. The main
direction of flow is consequently deflected by 180.degree.,
starting from the main direction of collective flow, inside the
manifold section. This results in improved mixing of the individual
manifold flows. Additionally, an optimization of the installation
space is therefore achieved.
[0021] In addition, it can be advantageous if a two-shell external
housing is provided, which is located at a distance from the
exhaust housing, wherein an insulating air gap is provided between
the external housing and the exhaust housing. An air-gap insulated
housing also has the aforementioned advantages.
[0022] It can furthermore be advantageous if the flange plate is
secured in a gas-tight manner to the manifold pipe connectors or to
the manifold pipes. The exhaust housing can be secured by means of
the flange plate, if need be using a gasket, directly to the
cylinder head of the internal combustion engine.
[0023] Further areas of applicability will become apparent from the
description provided herein. The description and specific examples
in this summary are intended for purposes of illustration only and
are not intended to limit the scope of the present disclosure.
DRAWINGS
[0024] The drawings described herein are for illustrative purposes
only of selected embodiments and not all possible implementations,
and are not intended to limit the scope of the present
disclosure.
[0025] Additional advantages and details of the disclosure are
explained in the patent claims and in the description, and are
illustrated in the figures, wherein:
[0026] FIG. 1 shows a schematic diagram of the exhaust housing in a
view from above;
[0027] FIG. 2 shows a view from the front;
[0028] FIG. 3 shows a view in accordance with FIG. 1 as a further
embodiment example;
[0029] FIG. 4 shows a schematic diagram of an exhaust system;
[0030] FIG. 5 shows a schematic diagram of a further embodiment
example of the exhaust housing.
[0031] Corresponding reference numerals indicate corresponding
parts throughout the several views of the drawings.
DETAILED DESCRIPTION
[0032] Example embodiments will now be described more fully with
reference to the accompanying drawings.
[0033] An exhaust housing 1 shown in FIG. 1 has a two-shell
configuration and has a first half shell 1a and a second half shell
1b. The two assembled half shells 1a, 1b or the exhaust housing 1
form a manifold section 1.1 as well as a catalyst housing section
1.2 and an exhaust pipe connector section 1.3 attached thereto,
which are manufactured as a single piece with respect to the
respective half shell 1a, 1b. The upper half shell 1a, which is
shown in accordance with FIG. 1, has, in the region of the manifold
section 1.1, three manifold pipe connectors 1.4, 1.4', 1.4'' which
are configured inside the half shell 1a as a rim hole.
[0034] The two half shells 1a, 1b have a connection edge 2a, 2b
which in turn spans a separation plane T.
[0035] The manifold section 1.1 has a central axis 1.5 and the
catalyst housing section 1.2 has a central axis 1.6, which are
aligned coaxially to one another according to FIG. 1.
[0036] The three manifold pipe connectors 1.4, 1.4', 1.4'' or the
ends thereof span a connection plane A and a connection plane K,
which are aligned parallel to the separation plane T in the
embodiment example in accordance with FIG. 1. A flange plate 3 is
secured to the three manifold pipe connectors 1.4, 1.4', 1.4'',
which flange plate is aligned parallel to the connection plane A.
The exhaust housing 1 is connected to a cylinder 7 of an internal
combustion engine, which is not shown in more detail, by means of
the flange plate 3.
[0037] Since the manifold pipe connectors 1.4, 1.4', 1.4'' are
configured straight or free of curvature, the connection plane K is
aligned parallel to the connection plane A.
[0038] It can be seen in the view in accordance with FIG. 2 that
the separation plane T, spanned by means of the respective
connection edge 2a, 2b, is configured in a curved manner. Both
housing halves 1a, 1b can also be configured as a folding
shell.
[0039] In the embodiment example in accordance with FIG. 3, a
manifold pipe 4, 4'' is arranged on the respective manifold pipe
connector 1.4, 1.4''. This serves to bridge the distance between
the manifold section 1.1 and the cylinder 7. The manifold pipes 4,
4', 4'' are each configured cylindrically and all have the same
form. The connection plane K is therefore also arranged parallel to
the connection plane A. An adjustment of the architecture of the
manifold pipe connectors 1.4, 1.4', 1.4'' to the architecture of
the cylinder 7 or the cylinder outlet, which is not shown in
further detail, is not necessary.
[0040] FIG. 4 shows an exhaust system 5 having an exhaust housing 1
in the embodiment according to one of FIGS. 1 to 3. In addition to
the exhaust housing 1, the exhaust system 5 has an additional
converter or catalyst 5.1 as well as an exhaust gas silencer 5.2,
which are connected via an exhaust pipe 5.3. The exhaust housing 1
is hereby configured in an air-gap insulated form and additionally
has an external housing 6 which, together with the internal
housing, delimits an air gap 6.1.
[0041] In accordance with the embodiment example in FIG. 5, the
manifold section 1.1 and the catalyst housing section 1.2 are
connected to one another by means of a U-pipe section 1.7, so that
both sections are arranged laterally offset from one another with
respect to the respective central axis 1.1, 1.2. The collective
flow running along the central axis 1.5 inside the manifold section
1.1 is deflected by means of the U-pipe section 1.7 by 180.degree.
and consequently aligned in accordance with the central axis 1.6 of
the catalyst housing section 1.2.
[0042] A slight angular deviation of up to approx. 3.degree. is
possible between the two central axes 1.5, 1.6. This can be seen on
the basis of the manifold section 1.1' having the central axis
1.5', which is shown with the dashed line.
[0043] The foregoing description of the embodiments has been
provided for purposes of illustration and description. It is not
intended to be exhaustive or to limit the disclosure. Individual
elements or features of a particular embodiment are generally not
limited to that particular embodiment, but, where applicable, are
interchangeable and can be used in a selected embodiment, even if
not specifically shown or described. The same may also be varied in
many ways. Such variations are to be regarded as a departure from
the disclosure, and all such modifications are intended to be
included within the scope of the disclosure.
* * * * *