DE202007012299U1 - Device for cleaning the exhaust gases of diesel engines - Google Patents

Abstract

A device for purifying the exhaust gases of diesel engines comprising, in a unit to be opened for cleaning, a soot particle filter (DPF), a diesel oxide (DCC) and a selective catalytic reactor (SCR)
- A soot particle filter with
A filter body (6),
- a storage mat (5)
- and a Canningrohr (3),
- a V-band clamp (9)
- And a perforated hood (8) with a V-band clamp (9) matching flange contour,
According to the invention further comprising:
- An inner bottom (7) with integrated, angekragtem passage whose contour is designed inversely to the perforated hood (8),
A canning overtube (2),
- a DPF carrier tube (1)
- And two wire knit rings (4) between Canning overpipe (2) and DPF support tube (1), which store the soot particle filter radially.

Description

The The invention relates to devices for cleaning the exhaust gases of diesel engines according to the generic term of claim 1.

To the Cleaning the exhaust gases of diesel engines become two special components used, namely Rußpartikelfilter and SCR catalyst. Rußpartikelfilter have to After a certain period of operation of ash and other deposits getting cleaned. Therefore, their housing can be opened and remove the filter cartridges and insert again.

It It is understood that the design of the housing and the active inserts designed this way It should be that the assembly in the factory on the one hand and the disassembly and reassembly in the workshop on the other hand possible just done can be while at the same time a flawless and trouble-free operation guaranteed have to be. commercial Constructions use flanges at the separation point of the housing which are releasably connected by means of screws and nuts. Often these are Flanges poured and therefore very heavy. See alternative solutions the use of V-band clamps, which profiled with appropriately Flange contours on the housing halves together Act. These solutions Although structurally very simple, they are rarely able to in the production of the housing and active missions To compensate for unavoidable tolerances and thereby the gas tightness to ensure.

Of the The present invention is therefore based on the object, a device for cleaning the exhaust gases of diesel engines, on the one hand simple and lightweight, as well as gas-tight, on the other hand but a simple installation and removal for the purpose of assembly, disassembly and Allow cleaning.

These Task is solved by the device having the features of claim 1.

basics Advantages of the construction according to the invention are space-optimized design, much easier Ein- and Removal of the soot particle filter in a closed system, which diesel oxidation catalyst, Rußpartikelfilter and SCR catalyst in a housing houses, the guaranteed tightness of the system, the lower Weight and the cost-effective Production.

The permanent tightness of the system is achieved by tightening the screws in the associated V-band clamp achieved, resulting in an axial compression of the cantilevered Passage of the inner bottom with the inverse contour of the soot particle filter hood results.

According to one Development of the invention are parallel circumferential in Canning overtube Encased provided between which the wire knit rings axially become. These wire knit rings support the soot particle filter radially and enable at the same time its rapid removal and replacement in the case of Maintenance.

Based the drawing is intended to illustrate the invention in the form of an embodiment be explained in more detail.

It demonstrate

1 in part a longitudinal section through a device for cleaning the exhaust gases of diesel engines;

2 an enlarged section of the 1 and

3 another enlarged section of the 1 ,

1 shows purely schematically and as a detail a longitudinal section through a device for cleaning the exhaust gases of diesel engines, wherein the 2 and 3 in each case enlarged partial cutouts from the 1 are.

One recognizes a soot particle filter 6 with the help of a storage mat 5 in a Canning tube 3 is stored. The Canning tube 3 is in turn in a Canning Überberrohr 2 stored. The Canning overtube 2 is with two pairs of circumferential beads 10 provided, between each of which a wire mesh ring 4 is stored. Thanks to the wire mesh rings 4 sits the Canning overtube 2 centered in a DPF carrier tube 1 from which it can be easily pulled out for maintenance purposes.

Furthermore one recognizes in 2 a perforated hood 8th that with a flange contour 8.1 is fitted, matching a V-band clamp 9 , The V band clamp 9 connects the hood 8th with an inner bottom 7 which has an integral, cantilevered passage. The permanent tightness of the housing to the environment by tightening the screws (not shown) of the V-band clamp 9 achieved, resulting in an axial compression of the cantilevered passage of the inner bottom 7 with the inverse contour of the perforated hood 8th results. After loosening the V band clamp 9 Can the out of Canning over tube 2 , Canning tube 3 , Wire knit rings 4 , Storage mat 5 and diesel particulate filters 6 existing unit from the DPF carrier tube 1 pulled out and used again after cleaning.

Claims (2)

Device for cleaning the exhaust gases of diesel engines, comprising, in a unit to be opened for cleaning, a soot particle filter (DPF), a diesel oxide (DCC) and a selective catalytic reactor (SCR), comprising - a soot particle filter with - a filter body ( 6 ), - a bearing mat ( 5 ) - and a Canning tube ( 3 ), - a V-band clamp ( 9 ) - and a perforated hood ( 8th ) with a V-band clamp ( 9 ) matching flange contour, according to the invention further comprising: - an inner bottom ( 7 ) with an integrated, projected passage, whose contour to that of the perforated hood ( 8th ) is designed inversely, - a Canning overpipe ( 2 ), - a DPF carrier tube ( 1 ) - and two wire knit rings ( 4 ) between Canning-Überrohr ( 2 ) and DPF carrier tube ( 1 ), which radially support the soot particle filter. Apparatus according to claim 1, further comprising: - peripheral beads ( 10 ) in the Canning overtube ( 2 ), the wire knit rings ( 9 ) axially.