DD145941A1 - APPARATUS FOR RECEIVING CATALOG ENGINE OXYGEN ENGINE GENERATORS - Google Patents

Abstract

The invention relates to a device for receiving catalytic converters for after-gas combustion, which are installed in the exhaust gas flow of petrol and diesel engines. The invention aims to increase the service life of the catalysts. The invention has for its object to achieve a high degree of standardization, a good fit to all engine sizes and easy replacement of the cartridges. The following introduction variants are proposed. A gray or Stahlguszausfuehrung for the introduction into the Abgaskruemmer, the vertical pipe installation is sufficient for a heat-resistant metal jacket, whereas the horizontal installation a double-walled execution with a heat insulation layer is necessary. The cartridge itself consists of a stable shell, which carries perforated plates in the direction of flow. The invention can be used in gasoline and diesel engines.

Description

a) Title of the invention

Device for receiving catalytic converters for engine exhaust afterburning "

b) Field of application of the invention

The 'invention relates to a device for receiving catalysts for engine exhaust afterburning, which is arranged in the exhaust gas stream of gasoline and diesel engines and. an oxidation of pollutant components causes »

c). Characteristic of the known technical solutions

Solutions for the catalytic afterburning of pollutants from internal combustion engines are already known. These solutions involve momolithische or located in a granular form catalysts "The conditions · that are given on -Verbrennungsmotor as * z _o B", the high temperatures and mechanical vibrations, to name but a few, place high demands on the housing, the catalyst retention and the catalyst itself. The main difficulty igke.it is to maintain the globular density packing of the catalyst under the conditions mentioned above over a longer operating time. The catalyst wears due to the low bias of the relatively large catalyst package and the relative movement of the contact carrier possible thereby against each other «

With the wear of the catalyst, the radial flow distribution changes according to .the StrömungswiderStandes until the exhaust gas flows unhindered and thus unchanged through the device or it comes with high Eußbelastung sur increase the flow resistance and thus a threat to the upstream 'teten engine.

To avoid these disadvantages su, the front end of the annular gap-shaped container in the region of at least one end plate and the Seitsnwand of the container with respect to the housing shell of the housing for receiving axial and radial relative movements was slidably mounted.

However, this measure was not enough to stop the attrition and the poling and more and more increasing functionality of the catalytic converter. «

In contrast to bulk catalysts, mono ™. 'high performance mechanical and dimensional stability of lithic catalysts' Mach part is the high manual effort required to install the catalyst in the tank and the additional expense due to the complexity of the construction.

d) Object of the invention

The invention has the goal to increase the service life of the catalysts ...

The invention is based on the task of achieving a high degree of standardization for the installation, a good adaptation to the different engine sizes and a simple change of the catalyst cartridges with the least possible effort. "

e) Presentation of the essence of the invention. ,

The object of the invention is achieved in that in a container a plurality of catalyst cartridges are arranged, which are flowed through in the direction of the effect of gravity only once from the exhaust gas «The various.Komponenten be oxidized.

The catalyst cartridge consists of a stable shell, which in the flow direction festooned perforated plates, which are placed on the inside of mesh nets »By the arrangement clogging of the perforated plate is avoided by the catalyst moldings.

The catalyst cartridge further has a filler neck, which is closable. The housing design is determined by the arrangement in the respective exhaust system and the associated load *

} For the introduction variant in the exhaust manifold a gray or Stahlgußausfüh'ung is suggested. vertical pipe installation is sufficient for a heat-resistant metal jacket and for horizontal pipe installation a double-walled version with heat insulation layer, with heat-resistant steel inside and a corrosion-resistant metal jacket outside are used. Both coats, which are used for horizontal pipe installation, can move against each other with different heat expansion.

The invention will be explained in more detail in the following exemplary embodiments and with reference to drawings ¹ attached thereto.

It means:

FIG. 1 shows the catalyst cartridge arrangement in FIG.

Exhaust manifold '

Figure 2 shows the vertical arrangement with lateral

or axial exit Pigur 3. an axial arrangement with axial

or offset exit

Figure 4 shows a Horiaontalanordnung with axial inlet and outlet

The catalyst cartridges are in principle of identical design for all four variants. Only the different suspension variants require modified cartridge housings, as can be seen from FIGS. 1 to 4.

f) Embodiment 1 (see FIG. 1)

The device in the exhaust manifold consists of a Grauoder Stahlgußgehäuse, in which according to the number of cylinders catalyst cartridges are arranged, which are vertically flowed through in the direction of gravity of the exhaust gas. The G-entry occurs directly from the cylinder into the device and is collected after the flow through the reaction cartridge and continued through an outlet opening

Embodiment 2 (see FIG. 2)

In the vertical arrangement with lateral or axial outlet, the housing consists of a double-walled version with thermal insulation layer, wherein the Außene.nmantel 1 made of cast iron or steel sheet and the inner lining is made of heat-resistant steel sheet «The gas guide plate 9 is also the support frame for the reaction cartridges 4« Thus the baffles and reaction cartridges can slide on the bolt 3. "This special arrangement and the associated freedom of movement results in a reduction of the applied vibration energy. * The housing is sealed tightly by the mounting cover 2 at the top." The catalyst cartridge 4 has a stable jacket which is in the flow direction Perforated sheets 5, which are placed on the inside of mesh nets 6 _ö The perforated plates, have openings that are 1 to 5 now, while the Mg size of the size of the catalyst moldings is adapted «

Embodiment 3 (to this Mg · 3 ')

The embodiment with axial or offset outlet has a housing as in Example 2, and the catalyst cartridge is vertically as in Example 1 flows »

It is supported by flexible supports and can perform vertical vibrations.

Figure 4 is a variant of embodiment 3e The particular advantages of the invention are a long service life of the catalyst, easy replacement of the Jatatalysatorpatronen, low exhaust back pressure and the reduction of the resulting Schllpegels.

The invention realizes a modular system and allows a good adaptation to different motor sizes with the same reaction cartridges.

Claims (4)

invention claim 1. A device for receiving catalysts for engine exhaust afterburning characterized in that the
Reaction cartridge (s) (4) on the bolt (3) and sliding bushings (8) and / or gas guide plates (9) flexible in
Housing is arranged (are), with the exhaust gases on
the necessary contact path directly or in several
Partial currents flow through the catalyst cartridge (s) (4) in the direction of gravity only once. 2 »device for receiving catalysts for engine exhaust afterburner according to item 1, characterized in that the catalyst cartridge (4) consists of a
Perforated metal jacket (5)> on the inside of a mesh (6) is placed perpendicular to the surface consists. 3 · Device for receiving catalysts for engine exhaust afterburner according to item 1 and 2, characterized in that the housing optionally in gray or cast steel execution or «with heat-resistant metal jacket
or in double-walled version with. Heat insulation layer are executed « 4. A device for receiving catalysts for engine exhaust afterburning according to item 1, 2 and 3, characterized in that the exhaust gases on the necessary contact directly or in several sub-streams the Eeaktionspatrone (s) (4) in the direction of gravity flow through only once. Kierzy.JL, $ drawings