DE10330680A1 - Particle filter for cleaning internal combustion engine exhaust gases, especially of diesel engine, has inlet channels with greater capacity for non-combustible deposits than outlet channels - Google Patents

Abstract

The device has an exhaust gas inlet and outlet and inlet channels communicating with the exhaust gas inlet at their inlet ends and communicating between their ends via a porous wall with an outlet channel(s) closed at its inlet end facing the exhaust gas inlet and communicating with the exhaust gas outlet at its outlet end facing the exhaust gas outlet. The inlet channels have more capacity for non-combustible deposits than the outlet channel(s). The device has an exhaust gas inlet (4) and outlet (5) and several inlet channels (6) that communicate with the exhaust gas inlet at their inlet ends (7) and that communicate between their ends (7,8) via a porous wall (12) with at least one outlet channel (9) that is closed at its inlet end facing the exhaust gas inlet and communicates with the exhaust gas outlet at its outlet end facing the exhaust gas outlet. The inlet channels have a greater capacity for non-combustible deposits than the at least one outlet channel. AN Independent claim is also included for the following: (a) a method of manufacturing an inventive particle filter.

Description

The present invention relates to a particle filter for cleaning exhaust gases from an internal combustion engine, in particular a diesel engine, preferably in a motor vehicle.

The invention also relates to a Process for producing such a particle filter.

The exhaust gases from internal combustion engines, especially diesel engines, contain particles that are not in the environment should be emitted. For this purpose, one can Exhaust system of the internal combustion engine has a particle filter at the beginning mentioned type can be installed. Because the particles in a diesel engine mainly formed by soot are, the particle filter can also be referred to as a soot filter. The particle filter contains a porous Filter structure that is to be cleaned during the operation of the particle filter Exhaust gases flow through becomes. The particles are deposited on the filter structure, whereby the exhaust gases are cleaned. During the operating time of the Internal combustion engine, these deposits increase more and more, causing the flow resistance of the particle filter and thus the exhaust gas back pressure increases, which with a performance penalty and / or increase in consumption of the internal combustion engine. As soon as a predetermined loading condition has been reached, the particle filter is regenerated, in which the soot deposits be burned down. For this purpose, the exhaust gas temperature of the Internal combustion engine to be raised. Additionally or alternatively, chemical additives (e.g. Iron or cerium additives are used. In a motor vehicle, whose internal combustion engine is equipped with such a particle filter is such a regeneration about every 300 to 2000 km required.

In addition to the combustible particles are also stored in the company incombustible remains of engine oil (Oil ash) Engine abrasion and possibly non-combustible residues of the fuel additives used in the particle filter. this leads to despite repeated regeneration of the particle filter at one long running time (approximately 100,000 to 150,000 km for a vehicle) constipation that can no longer be regenerated by burning of the particle filter and thus to an increase in the exhaust gas back pressure undesirable high values. Shorten overall the regeneration cycles for soot burn-off, taking place simultaneously the mean back pressure in the operation of the internal combustion engine clearly increases. This reduces usable engine power and fuel consumption is increasing. For these reasons must have a conventional particle filter during the lifetime of the internal combustion engine or the motor vehicle equipped with it (e.g. after about 80,000 to 120,000 km) replaced by a new particle filter or by the incombustible Residues cleaned become.

The invention seeks to remedy this. The present invention deals with deal with the problem for a particle filter of the type mentioned an improved embodiment to be specified, which in particular has an increased service life.

This problem is caused by the objects of the independent Expectations solved. Advantageous embodiments are subject to the dependent Expectations.

The present invention is based on the general thought, with a particulate filter, that out several, parallel to each other, arranged side by side and through porous Closed walls communicating with one another on the output side inlet channels and there are outlet ducts closed on the inlet side, the inlet ducts so modify that they have greater storage capacity for non-flammable Deposits have as the outlet channels. The invention makes use of this the knowledge that the particle loading of such a particle filter in operation mainly takes place in the inlet channels and there at the outlet ends begins and grows in the direction of the entry ends. The following applies when regenerating the same for the incombustible debris that builds up in the intake ports first at the outlet ends and also from there towards Growing entry end. If now according to the proposal of present invention the storage capacity for such incombustible Residues in the Inlet channels can be increased the period up to which the increasing deposit is more incombustible Residue to one inadmissible leads to a high pressure rise in the particle filter, can be increased considerably. For example, for the entire service life of an internal combustion engine or one with it equipped motor vehicle in the particle filter a sufficient low flow resistance be achieved. Thus, the particle filter has to last for the life of the motor vehicle or the internal combustion engine cannot be cleaned or replaced.

Particularly in one embodiment, in which the particle filter according to the invention has the same installation dimensions as a conventional particle filter, the measures according to the invention can lead to an increase in the basic back pressure, i.e. the exhaust gas back pressure when the particle filter is not loaded, since the flow resistance as a result of the increased storage capacity of the inlet channels as a whole can increase. For example, the basic flow resistance of the unloaded particle filter is determined by inflow losses, losses in the inlet channels, losses in the outlet channels and shock losses at the cross-sectional jump at the end determined end of the outlet channels. However, since the total resistance of the particle filter during operation of the internal combustion engine is mainly determined by the particle loading, the total resistance in the particle filter according to the invention remains at a comparatively low level longer than with a conventional particle filter, which may have a lower base resistance, but the total resistance of which is due to the smaller one Storage capacity increases faster. Furthermore, the particle filter according to the invention automatically also has an increased storage capacity for the combustible particles, as a result of which the intervals between two regenerations remain sufficiently long for a long time.

In a preferred embodiment becomes the storage capacity of the inlet channels thereby elevated, that all inlet channels together a larger from Exhaust gas can flow through Total cross-sectional area have than all outlet channels together. By This measure have the inlet channels automatically a larger inner wall area than the outlet channels. That I the deposits on or in the walls of the inlet channels, stands in this embodiment significantly more area to disposal, what the storage capacity elevated. With further training you can more inlet channels provided be as exhaust ports, whereby the inlet channels too then have a larger total cross-sectional area, if inlet channels and outlet channels each the same cross-sectional areas have.

A variant, is preferred which each inlet channel a larger from Exhaust gas can flow through Cross sectional area has than each outlet channel. This embodiment ermöglichst especially a regularly alternating one Arrangement of inlet channels and Outlet channels at increased at the same time memory of the inlet channels.

One embodiment is particularly advantageous, in which the inlet channels and the Outlet channels arranged so are concentric that at least three inlet channels one outlet channel enclose, each with the outlet duct have a common wall and a common pair Have wall. In this embodiment there is a regular structure for the Arrangement of the inlet channels and the Outlet channels, at the inlet channels and outlet channels each other alternate.

With a view to minimal flow resistance as well as in terms of a maximum increase in storage capacity one embodiment turned out to be useful, where the inlet channels each an octagonal cross-section and the outlet channels each a quadrangular cross-section exhibit.

For the previously described embodiments, where the inlet channels each have larger cross-sectional areas than the outlet channels, can the particulate filter is particularly easy thanks to a monolithic filter body are provided, in particular by an extrusion process or extrusion process can be made. Preferably there is this filter body from an oxide ceramic, for example from cordierite, or from a high-performance ceramic, such as. Silicon carbite or silicon nitrite.

One embodiment is particularly advantageous, at which the storage capacity of the inlet channels thereby is enlarged, that at least one storage space at the outlet ends of the inlet channels is formed, the cross-sectional area of which is larger than the cross-sectional area through which the exhaust gas can flow of the inlet channels. By this design becomes a particularly large storage volume at precisely those points provided, on which the particles preferentially deposit and at the communicating connection between the inlet channels and the at least one outlet channel not participate, so that the filling of the storage spaces essentially not on the flow resistance of the particle filter affects.

According to a further development, the inlet channels on their Exit end each have a separate storage chamber that contains the storage space and at the same time closes the respective inlet duct. at such an embodiment are the storage spaces almost in the closures of the inlet channels integrated. Basically can thus on the conventional Construction of the filter body be held so that this with all inlet channels and all outlet channels in particular can be produced as a monolithic extruded part.

In an alternative design, the inlet channels can be on their Exit ends have a common storage container, one for all inlet channels contains common storage space and a common closure for forms all inlet channels. In this embodiment the common storage space can still be flowed through, so in the storage space for the Regeneration operation is sufficient to supply the oxygen to burn combustible deposits.

Other important features and advantages the invention emerge from the subclaims, from the drawings and from the associated Description of the figures using the drawings.

It is understood that the above not only mentioned and the features to be explained below in the specified combination, but also in others Combinations or alone can be used without the frame to leave the present invention.

Preferred embodiments of the invention tion are shown in the drawings and are explained in more detail in the following description, wherein the same reference numerals refer to the same or functionally identical or similar components.

Each shows schematically

1 a greatly simplified longitudinal section through a particle filter according to the invention,

2a to 2g simplified cross sections through a partial area of the particle filter in different embodiments,

3 a longitudinal section as in 1 but in another embodiment,

4 a cross section corresponding to the section lines IV in 3 .

5 a longitudinal section as in 3 but in a further embodiment,

6 a cross section corresponding to the section lines VI in 5 .

7 an enlarged detail view of a longitudinal section in the region of outlet ends according to section lines VII in 8th but in another embodiment,

8th a plan view corresponding to an arrow VIII in 7 ,

Corresponding 1 includes a particle filter 1 according to the invention a housing 2 , in the embodiment shown here, a filter body 3 is arranged. This filter body 3 can be designed as an extruded part and in particular as a monolith. The particle filter 1 has a gas inlet 4 as well as an exhaust outlet 5 on. Furthermore, the particle filter 1 with multiple inlet channels 6 equipped that run parallel to each other and are arranged side by side. Every inlet channel 6 has an entry end 7 that the exhaust gas inlet 4 is facing. The entry ends 7 are each open so that the inlet channels 6 with their entry ends 7 with the exhaust gas inlet 4 communicate. Furthermore, each inlet channel has 6 an exit end 8th that the exhaust gas outlet 5 is facing and is also closed.

The particle filter 1 also has at least one, here several outlet channels 9 on, which are also parallel to the inlet channels 6 extend. The outlet channels 9 are also each with one entry end 10 and an exit end 11 provided, in contrast to the inlet channels 6 at the exhaust ducts 9 that the exhaust gas inlet 4 facing entry end 10 is closed while the exhaust gas outlet 5 facing exit end 11 is open and with the exhaust outlet 5 communicated. The inlet channels 6 and the outlet channels 9 communicate with each other through common porous walls 12 through which the neighboring channels 6 . 9 separate from each other.

During operation, the flow through the particle filter indicated by arrows takes place 1 as follows:
The exhaust gases laden with particles pass through the exhaust gas inlet 4 in the housing 2 one, spread over the entry ends 7 of the inlet channels 6 , Because the exit ends 8th of the inlet channels 6 are closed, can in the inlet channels 6 Exhaust gases entering through the outlet ends 8th of the inlet channels 6 emerge, but must go through the walls 12 into the outlet channels 9 escape. The porous walls 12 form a filter structure that essentially retains the particles contained in the exhaust gases as they flow through. Exhaust gases cleaned of the particles thus enter the outlet channels 9 from which they exit through their ends 11 exit and at the exhaust outlet 5 from the particle filter 1 are brought out.

For a particularly long service life for the particle filter 1 to achieve, are the inlet channels 6 provided according to the invention with a larger storage capacity for non-combustible deposits than the outlet channels 9 , At the in 1 Embodiment shown is the increase in storage capacity at the inlet channels 6 achieved in that the inlet channels 6 each have a larger cross-sectional area through which the exhaust gas can flow than each individual outlet channel 9 , As a result, the inlet channels have 6 a particularly large surface exposed to the exhaust gas, on which the filtered particles are stored.

The particle filter is loaded due to the flow conditions 1 such that the particles are initially at the outlet ends 8th of the inlet channels 6 deposit and from there slowly towards the entrance ends 7 of the inlet channels 6 grow. The particles usually carried in the exhaust gas are usually soot. The particle filter 1 or soot filter can expediently be regenerated by burning off the particles deposited therein. Due to the combustion, the combustion residues can pass through the walls 12 into the outlet channels 9 occur and thus through the exhaust gas outlet 5 from the particle filter 1 escape. With such a regeneration, however, non-combustible residues, such as oil ash, engine wear and fuel additives, remain in the inlet channels 6 back and form permanent deposits in it, which tend to form first at the outlet ends 8th of the inlet channels 6 fix and from there towards the entrance ends 7 of the inlet channels 6 grow. In this way, despite regeneration, there is slowly a reduction in the wall area available for filtering the exhaust gases, as a result of which the exhaust gas counterpressure of the particle filter gradually increases 1 increases. By the construction according to the invention, according to which the inlet channels 6 have an increased storage capacity for such incombustible deposits, it takes a comparatively long time until the particle filter according to the invention 1 results in a critical load that would require the particle filter 1 to clean or replace. By appropriate dimensioning of the increased storage capacity of the inlet channels 6 it is in particular possible to use the particle filter according to the invention 1 to match the service life of an internal combustion engine equipped therewith or of a motor vehicle working with such an internal combustion engine such that the particle filter 1 no need to be cleaned or replaced during this lifetime. This simplifies maintenance of the vehicle.

The 2a to 2 B show several different exemplary variants for a particle filter 1 that with multiple inlet channels 6 and several outlet channels 9 is equipped, which are arranged parallel to each other and next to each other. Such an embodiment can be particularly simple in the monolithic filter body 3 be formed.

The 2a to 2g show special embodiments, in each of which at least three inlet channels 6 an outlet duct 9 enclose concentrically. For example, in the embodiment according to 2d the respective outlet duct 9 of three inlet channels 6 concentrically surrounded, while in the embodiments of the 2a to 2c and 2e the respective outlet duct 9 each of four inlet channels 6 is enclosed concentrically. An example is the variant according to 2f an arrangement reproduced, each with five inlet channels 6 one outlet channel each 9 surrounded concentrically. In contrast, in the embodiment according to 2g the respective outlet duct 9 six inlet channels 6 assigned to the respective outlet channel 9 enclose.

These embodiments ensure that each inlet channel 6 with the enclosed outlet duct 9 a common wall 12 having. Likewise, each have two adjacent inlet channels 6 a common wall 12 on. This ensures that from each of the inlet channels 6 Exhaust gas through the porous wall 12 into the outlet duct 9 can occur, which is symbolized in the figures by arrows.

The 2a to 2c show advantageous embodiments, which are characterized by a particularly low flow resistance with a comparatively large storage capacity for the particles in the inlet channels 6 distinguished. In these embodiments, the inlet channels are 6 each equipped with an octagon cross-section, while the outlet channels 9 are equipped with a square cross-section. Regular octagon cross-sections and regular square cross-sections or rectangular cross-sections, preferably square cross-sections, are preferred.

In addition to these preferred embodiments with octagonal cross-sections and square cross-sections, any other cross-sections can in principle be used, extrudable cross-sections being preferred for reasons of simplicity of manufacture. The 2d to 2f therefore show examples with circular cross-sections for the inlet channels 6 and the outlet channels 9 , Furthermore, the 2g an embodiment with hexagonal cross sections. It is clear that other cross sections or elliptical cross sections can also be used.

In the variants of 2a to 2f can basically have the same number of inlet channels 6 like outlet channels 9 to be available. Symmetrical or regular arrangements of the channels are preferred 6 . 9 ,

While in the embodiments of 2a to 2f the inlet channels 6 each have a larger cross-sectional area than the outlet channels 9 , shows 2g a variant in which the inlet channels 6 and the outlet channels 9 have the same cross-sectional areas. The greater storage capacity for non-combustible deposits within the inlet channels required according to the invention 6 is achieved here, within the particle filter 1 more inlet channels 6 are arranged as outlet channels 9 , This embodiment can also be advantageous in terms of production technology.

However, is essential for all embodiments of the 2a to 2g that the entirety of the inlet channels 6 overall has a larger total cross-sectional area through which the exhaust gas can flow than the entirety of all outlet channels 9 , regardless of whether this is due to larger individual cross sections in the inlet channels 6 and / or by a larger number of inlet channels 6 is realized.

While they are in the 1 and 2a to 2g Variants shown are particularly suitable for production by means of an extrusion process, can in the embodiments described below 3 to 8th the manufacturing effort may be somewhat larger.

In the embodiments of the 3 and 5 is not a monolithic filter body (see reference number 3 in 1 ) intended. The inlet channels 6 are here each as separate candle bodies 13 educated. These candle bodies 13 extend parallel to each other and within a common outlet channel 9 ' that the inlet channels 6 or the candle bodies 13 coaxially encased. The outlet duct 9 ' also has an exhaust gas inlet 4 facing entry end 10 ' by a partition 14 is closed. The partition 14 contains for each candle body 13 a through opening 15 , in each of which one of the candle bodies 13 opposite the outlet duct 9 ' is held sealed. In this way, the inlet channels 6 through the through openings 15 through with the exhaust gas inlet 4 communicate. The wall of the outlet duct 9 ' is expedient here through the housing 2 of the filter body 1 educated.

The individual candle bodies 13 can each be produced as monoliths in the extrusion process, in particular from a suitable ceramic, or alternatively from a metal filter fleece.

In contrast to the embodiment according to 1 have the inlet channels 6 in the variants of 3 and 5 at their exit ends 8th at least one storage space 16 , in which particles filtered out of the exhaust gas, especially the incombustible deposits, can collect. This storage space 16 is characterized in that a cross-sectional area therein is larger than in an inlet channel 6 ,

This gives the storage space 16 a comparatively large volume in which a relatively large amount of deposits can accumulate without the flow resistance of the particle filter 1 noticeably increase.

In the variant according to 3 is every inlet duct 6 a separate storage chamber 17 assigned, each at the exit end 8th of the respective inlet channel 6 or the respective candle body 13 is arranged. In this way, the inlet channels 6 in the embodiment according to 3 as in the embodiment according to 1 at their exit ends 8th each closed separately. Any storage chamber 17 contains a separate storage space 16 ,

In contrast, in the embodiment according to 5 all inlet channels 6 a common storage space 16 assigned what with the help of a common storage container 18 is realized. At the same time are through this storage container 18 all inlet channels 6 at their exit ends 8th closed together, that means all inlet channels 6 are at their exit ends 8th separately to the storage tank 18 connected. The storage container 18 can just like the storage chambers 17 have a sheet metal housing. The individual inlet channels 6 flow with their exit ends 8th in the common storage container 18 , In this way, a compensation can be created for the filter operation in the event that the exhaust gas flow supplied differs differently on the inlet channels 6 distributed, for example due to asymmetrical exhaust gas supply and / or different loading conditions and thus flow resistance in the individual inlet channels. Furthermore, there are advantages for the regeneration operation, since the storage tank 18 is supplied with sufficient oxygen due to its flow and due to its flow in the outlet channel 9 ' can be heated sufficiently.

The embodiments of the 3 to 6 are flowed through as follows:
Through the exhaust gas inlet 4 the exhaust gas laden with particles enters the particle filter 1 and spreads over the open entrance ends 7 of the inlet channels 6 , Because the inlet channels 6 at their exit ends 8th through storage chambers 17 or through the storage container 18 are closed, the exhaust gas is forced through the porous walls 12 through from the inlet channels 6 emerge, the filter structure of the porous walls 12 retains the particles. That from the walls 12 the candle body 13 Escaping exhaust gas cleaned of the particles thus reaches the common outlet channel 9 ' , collects in it and can escape through the exhaust 5 again from the particle filters 1 escape. With this flow, the filter structure is first loaded in the area of the outlet ends 8th of the inlet channels 6 , consequently in the storage chambers 17 or in the storage tank 18 , Only when the respective storage space 16 is filled, the loading of the inlet channels increases 6 towards the entry ends 7 on. This applies to both the combustible particles and the incombustible residual materials, which are therefore predominantly in the storage rooms provided for this purpose 16 accumulate. This has the consequence that the back pressure increase when flowing through the particle filter 1 remains comparatively low for a relatively long period of time, so the particulate filter 1 according to the invention has a particularly long term or service life.

The 7 and 8th show a variant that also has a particle storage (storage space 16 ) works, but with a filter body 3 can be used in which the inlet channels ( 6 ) and the outlet channels ( 9 ) are arranged side by side transversely to the longitudinal direction. In particular, a monolith produced as an extruded profile can also be used as the filter body 3 be used. Corresponding 7 are the storage chambers 17 designed to fit the exit ends 8th of the inlet channels 6 are insertable. Here are the storage chambers 17 so to the dimensions of the walls 12 adjusted that these walls 12 at the exit ends 8th radially, that is, overlap transversely to the longitudinal direction of the inlet channels. The overlap is expediently such that the storage chambers 17 flush with the walls 12 to lock. The shape of the storage chambers 17 is also expediently chosen so that it connects to the adjacent outlet channel 9 aligned. The storage chambers 17 thereby form quasi axial extensions of the outlet channels 9 , The plug-in storage chambers 17 form with respect to the inlet channels 6 and thus with respect to the filter body 3 separate components.

Basically, the storage chambers 17 also be formed as separate components with each other, so that each inlet channel 6 its own, self-contained storage chamber 17 assigned. An embodiment is also possible in which several or all storage chambers 17 into a uniform storage chamber block 19 are summarized. In this storage chamber block 17 are then recesses 20 provided with the gas-carrying cross section of the outlet channels 9 align and thus the outlet channels 9 at their exit ends 11 extend axially. By summarizing the storage chambers 17 to the uniform storage chamber block 19 can assemble the particulate filter 1 be simplified considerably.

It is also possible to use the memory chamber block 19 to design so that its storage chambers 17 communicate with each other. In this way, flow through the storage chambers can also occur here 17 what the oxygen supply for the regeneration of the particle filter can be achieved 1 in the area of the storage rooms 16 simplified.

Claims (19)

Particle filter for cleaning exhaust gases from an internal combustion engine, in particular a diesel engine, with an exhaust gas inlet ( 4 ), an exhaust gas outlet ( 5 ) and several inlet channels ( 6 ), each with their exhaust gas inlet ( 4 ) facing entrance end ( 7 ) with the exhaust gas inlet ( 4 ) communicate and between their ends ( 7 . 8th ) through a porous wall ( 12 ) with at least one outlet channel ( 9 ; 9 ' ) communicate at its exhaust gas inlet ( 4 ) facing entrance end ( 10 ; 10 ' ) is closed and with its exhaust outlet ( 5 ) facing exit end ( 11 ) with the exhaust outlet ( 5 ) communicates, the inlet channels ( 6 ) are equipped with a larger storage capacity for non-combustible deposits than the outlet channel (s) ( 9 ; 9 ' ). Particulate filter according to claim 1, characterized in that all inlet channels ( 6 ) together have a larger total cross-sectional area through which the exhaust gas can flow than all outlet ducts ( 9 ; 9 ' ) together. Particle filter according to claim 1 or 2, characterized in that more inlet channels ( 6 ) are provided as outlet channels ( 9 ; 9 ' ). Particulate filter according to one of claims 1 to 3, characterized in that each inlet channel ( 6 ) has a larger cross-sectional area through which the exhaust gas can flow than each outlet channel ( 9 ). Particulate filter according to one of claims 1 to 4, characterized in that the inlet channels ( 6 ) and the outlet channels ( 9 ) are arranged in such a way that at least three inlet channels ( 6 ) an outlet duct ( 9 ) enclose concentrically, each with the outlet channel ( 9 ) a common wall ( 12 ) and each have a common wall in pairs ( 12 ) own. Particulate filter according to one of claims 1 to 5, characterized in that the inlet channels ( 6 ) each an octagon cross section and the outlet channels ( 9 ) each have a square cross section. Particulate filter according to claim 3, characterized in that the inlet channels ( 6 ) and the outlet channels ( 9 ) each have the same cross-sectional area through which the exhaust gas can flow. Particulate filter according to one of claims 1 to 7, characterized in that the inlet channels ( 6 ) at the exhaust outlet ( 5 ) facing exit ends ( 8th ) at least one storage space ( 16 ) which has a cross-sectional area that is larger than the cross-sectional area of one of the inlet channels through which the exhaust gas can flow ( 6 ). Particulate filter according to claim 8, characterized in that each inlet channel ( 6 ) at its exit end ( 8th ) a separate storage chamber ( 17 ) which has the storage space ( 16 ) contains and the respective inlet channel ( 6 ) closes. Particle filter according to claim 9, characterized in that the storage chambers ( 17 ) regarding the inlet channels ( 6 ) designed as separate components and in the outlet ends ( 8th ) of the inlet channels ( 6 ) are inserted. Particle filter according to claim 9 or 10, characterized in that - the porous walls ( 12 ) through which the inlet channels ( 6 ) with the outlet channels ( 9 ) communicate, adjacent inlet channels ( 6 ) and outlet channels ( 9 ) are assigned together - that the storage chambers ( 17 ) on the inlet channels ( 6 ) the walls ( 12 ) radially overlap with the walls ( 12 ) close flush and with the outlet channels ( 9 ) align. Particle filter according to one of claims 9 to 11, characterized in that the storage chambers ( 17 ) are designed as separate components. Particle filter according to one of claims 9 to 11, characterized in that several or all storage chambers ( 17 ) to a uniform storage chamber block ( 19 ) are summarized. Particulate filter according to claim 13, characterized in that the storage chambers ( 17 ) of the storage chamber block ( 19 ) communicate with each other. Particulate filter according to claim 8, characterized in that the inlet channels ( 6 ) at their exit ends ( 8th ) a common storage container ( 18 ), which for all inlet channels ( 6 ) a common storage space ( 16 ) contains and a common closure for the inlet channels ( 6 ) forms. Particulate filter according to one of claims 1 to 15, characterized in that all inlet channels ( 6 ) as separate candle bodies ( 13 ) are formed, all in a common outlet channel ( 9 ' ) on ordered at the end of its entry ( 10 ' ) through a partition ( 14 ) is closed, on which the candle body ( 13 ) of the inlet channels ( 6 ) in through openings ( 15 ) are held so that the entry ends ( 7 ) of the inlet channels ( 6 ) through the through openings ( 15 ) through with the exhaust gas inlet ( 4 ) communicate. Particle filter according to claim 16, characterized in that the candle body ( 13 ) are made from a metal filter fleece. Particulate filter according to one of claims 15 to 17, characterized in that all inlet channels ( 6 ) at their exit ends ( 8th ) separately to the storage tank ( 18 ) are connected. Process for the production of a particle filter ( 1 ) according to one of Claims 4 to 6 and 11, in which a monolithic filter body ( 3 ) is generated, whose profile the inlet channels ( 6 ) and the outlet channels ( 9 ) contains.