JP2002227632A - Removing apparatus for particulate matters included in diesel engine exhaust emission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To drastically reduce the cost of a filter and its regenerating cost, as well as to continuously carry out regenerating process of the filter while in operation, in a filter device that filters, captures, and burns by electrically heating for regeneration thereof, particulate matters(PM) that are included in diesel engine's gaseous emission. SOLUTION: A set of filtering device is divided into a number of filtering sections or so constituted as to have the same manner and state as it is divided, and rotary shutter or a mask shutter is provided at the entrance of the filtering sections. One filter section is closed from the gaseous emission passage by having its entrance shielded by the shutter. By repeating this in sequence, electric power is generated through heating one filtering section, thereby causing particulate matters in the whole filtering device to be burned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for removing particulate matter from exhaust gas discharged from mounting a diesel engine. Specifically, particulate matter (PM) consisting of carbon fine particles in exhaust gas emitted from diesel vehicles is captured by a filter device divided into multiple filter sections, and the captured and deposited particulate matter is heated and incinerated in each filter section. Etc., the particulate matter can be completely incinerated and the filter device can be regenerated to remove particulate matter from diesel engine exhaust gas (D
PF).

[0002]

2. Description of the Related Art Conventionally, pollution caused by a large amount of particulate matter, that is, carbon fine particles emitted from so-called diesel vehicles such as trucks and buses has been regarded as a problem, and countermeasures have been taken. As a typical example (1), as shown in FIG. 11, a material composed of a felt-like laminate in which ceramic fibers are irregularly stacked is sandwiched between a wire mesh holder and an electric heater that generates heat, and constrained. There is a particulate matter removal device (DPF) 1 comprising a ceramic fiber filter 3 in which a fiber structure having a large surface area is folded into a petal shape and processed into a cylindrical shape. When particulate matter (PM) in exhaust gas is filtered by a filter, the particulate matter is deposited and deposited between the fibers of the filter, and then a predetermined clogging is detected by a sensor, which is incinerated. To regenerate the filter.

That is, as shown in FIG. 12, the particulate matter (PM) of the exhaust gas generated by a diesel engine is converted into A.M. B: It is configured to filter and capture with a pair of filters. First, the particulate matter (PM) of the exhaust gas is filtered and captured by the filter A. Then, the particulate matter adheres and accumulates on the filter A and is clogged. When the ventilation resistance increases, the pressure sensor senses the change, and the filter valve B is switched to the filter device B by the switching valve C, and the filtration and the capture are continued. The filter device A regenerates by burning the particulate matter accumulated and clogged in the filter during that time. Similarly, the filter device B is switched and regenerated when particulate matter is clogged in the filter, and this is repeated alternately. D in the figure is an exhaust pipe for introducing exhaust gas.

[0004] The above-mentioned device 1 for removing particulate matter from exhaust gas comprises:
Since two switching-type filter devices with a regeneration function shown in FIG. 12 are provided, if the switching valve C fails, or if the pressure sensor or the controller fails, the filter device becomes excessive. The exhaust pressure (pressure loss) becomes abnormally high due to airflow resistance, and the combustion temperature becomes too high.

Further, in the above-mentioned device 1 for removing particulate matter from the ceramic fiber structure, the particulate matter adhered and deposited on the filter and clogged is incinerated by electric heating together with the filter through a wire mesh which generates heat. This electric heating not only occupies a large volume due to the two filter devices, but also the electric energy consumed for this electric heating is insufficient for the batteries and generators normally equipped in buses, trucks, etc. In addition to a high-performance generator, a regulator that converts the generated power to 24 volts, a controller, and the like are required, and the system is complicated and large and expensive. More crucially, as disclosed in Japanese Patent Application Laid-Open No. H11-294140, when an abnormality occurs in the above-mentioned system and particulate matter is excessively captured and deposited on the filter, heat damage during regeneration of the filter device, etc. In order to avoid the problem described above, a part of the exhaust gas needs to be released to the atmosphere. That is, if this is continued, there is a drawback that the exhaust gas particulate matter is dripped off.

FIG. 13 shows an example (2) of a filter 14 comprising silicon carbide, cordierite and a porous ceramic honeycomb structure provided with innumerable pores in a wall through which exhaust gas passes. There is a device for removing particulate matter of a ceramic honeycomb used by filtering and capturing carbon fine particles and burning the carbon fine particles adhered and deposited on the filter 14 to eliminate clogging of the filter and regenerate the filter.

The filter 14 of the porous ceramic honeycomb (referred to as wall flow honeycomb) is
Exhaust passages do not penetrate like a normal ceramic honeycomb carrier, and the adjacent passages alternately look like a checkered pattern in which outlets and inlets are closed. The exhaust gas flows into the opening (cell) of the square prism that is open, but passes through the porous wall of the square prism because the outlet is closed,
It moves to the next passage.

[0008]

In any of the above-mentioned devices for removing particulate matter from diesel engine exhaust gas, a filter for filtering and trapping particulate matter has a ceramic fiber structure,
Alternatively, a wall flow honeycomb and a metal honeycomb structure are used, and particulate matter deposited and clogged on the filter is subjected to a treatment such as incineration regeneration. In other words, two filter units are usually used as one set, and one unit is switched during use to incinerate and regenerate another particulate matter (PM) that has accumulated and clogged. The heating and incineration by the electric heater is usually performed after the outside of the filter device is closed and the ventilation of the exhaust gas to the filter device is stopped. This is because if exhaust gas having a temperature lower than the heating and incineration temperature is passed through the filter device, the temperature of the entire filter device will be reduced, which will hinder heating and incineration.
This is to prevent the temperature from lowering.

Usually, when the metal honeycomb 29 is installed in the passage of the exhaust gas which is said to be at 200 to 400 ° C. and is to be maintained at a high heat (for example, 600 ° C.), a low temperature (about 250 ° C.)
C.), a large amount of exhaust gas must be heated to 600 ° C., so that a large amount of wasteful heat is required, and the heating power required for this is enormous.

[0010] The above requires not only a double device but also members such as a switching valve, a branching device, various sensors and the like, and it is a matter of course that the filter surface is renewed every time the switching is performed. However, there was a problem that the head of the performance became large. That is, there has conventionally been a demand for a diesel engine exhaust particulate matter removal apparatus that can be continuously regenerated without performing the above switching.

The applicant of the present invention disclosed in Japanese Patent Application No. 12-340575 shown in FIG. 14 by dividing one filter device into a number of filter sections and heating each of the filter sections separately. It has been proposed to regenerate the filter continuously and successively, but this also suffers from a decrease in the heating temperature when exposed to low-temperature exhaust gas ventilation as in the above-described conventional case.

Furthermore, in the conventional wall flow honeycomb type, since ash generated after incineration of particulate matter (PM) accumulates on the surface of the filter, cracks occur in the honeycomb after 1072 times of collection and regeneration operations. ing. There is also a problem that the collection time is shortened by 50% or more compared to the initial time due to the accumulation of ash. Japanese Patent Application Laid-Open No. H11-280451 improved this by arranging a ceramic fiber structure and a conductive fired body downstream of the filter device in the filter device. There is a problem that it is reduced to 75% compared to the initial stage. In order to increase the collection efficiency of the wall flow honeycomb, it is necessary to make the gap between the filters fine. However, if the gap between the filters is made finer, the ventilation resistance of the exhaust gas will increase rapidly, and furthermore, the accumulation of ash in the filter will become remarkable and the filter will be easily clogged, making the filter device unusable. Therefore, there is a limit in subdividing the gap between the filters, and there is a limit in the collection effect of the particulate matter removing device using the conventional wall flow honeycomb.

In view of the above-mentioned problems of the conventional filter device, the object of the present invention is to switch the filter device, or
The elimination of the drawbacks caused by the movement of the divided filter sections. That is, in a filter device that filters and captures particulate matter of diesel engine exhaust gas, deposits it in the form of a filter, and incinerates and regenerates it with an electric heater or high-temperature combustion gas, significantly reduces the cost of the filter device and regeneration. That is, the filter device is continuously regenerated during operation.

Another object of the present invention is to provide an apparatus for removing particulate matter from diesel engine exhaust gas, which can continuously remove ash deposited on the filter during operation.

[0015]

SUMMARY OF THE INVENTION The object of the present invention is to provide a filter device which filters and traps particulate matter (PM) of diesel engine exhaust gas, regenerates it by heating and incinerating it. It is configured to be divided into a plurality of filter sections, or configured in a divided mode, and at the exhaust gas inlet of the divided filter section,
A solution is provided by providing a shutter capable of opening and closing the ventilation of exhaust gas, making the filter sections independent, and incinerating each. That is, by blocking at least one filter section inlet with a shutter, at least one filter section is closed and independent and is not exposed to exhaust gas ventilation.

In the prior art (1), each filter section is surrounded by an electric heater which is heated to a high temperature by energizing the inner periphery, and burns particulate matter deposited inside the filter. I have. However, the electric heater is heated by energizing the filter section in which the exhaust gas inlet is closed by the shutter, and the particulate matter deposited on the filter therein is burned to regenerate the filter. Alternatively, the particulate matter deposited on the filter due to the heating of the combustion gas is incinerated. By repeating the reproduction of the filter section in order, the entire filter device is reproduced.

[0017]

In order to achieve the above object, the present invention relates to an apparatus for removing particulate matter from diesel engine exhaust gas.
The incineration treatment by the electric heater for each filter section is performed by independently closing the inlets of the filter sections of the fibrous structure divided into a plurality of sections. All filter sections (particulate matter removal device) divided by repeating this one by one
However, heat incineration is performed by an electric heater.

Alternatively, the incineration of the filter sections of the fibrous structure divided by a plurality of sections can be performed independently by closing each of the inlets of the filter sections by a combustion gas.

[0019] Alternatively, the filter can be closed by independently closing the inlet of the divided wall flow honeycomb or the metal honeycomb of the same mode as the divided by the closing member or the mask shutter. Heat incineration with combustion gas.

The filter material may be any as long as it can filter and trap particulate matter of diesel engine exhaust gas.
Ceramic non-woven fabric, porous ceramic honeycomb,
Metal honeycombs and the like can be exemplified.

The drive of various shutters provided at the filter section entrance may be opened and closed by energizing and overheating using a shape memory alloy. The member may be driven.

The heat-resistant metal foil constituting the filter is, as a matter of course, preferably as thin as possible, in view of the electric resistance of the exhaust gas. At present, heat-resistant steel (Fe-20Cr) for catalyst carriers
-5A1) is obtained having a thickness of about 20 μm.

The particulate matter (P
It is preferable that air for supporting the combustion of M) is supplied.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in the following embodiments, the present invention can be applied to all conventional diesel particulate matter removing devices. In the first embodiment, not only the function of the switching type is doubled, but also the power required for the electric heater is reduced to 1/20, and a particulate matter removal device (DPF) for diesel engine exhaust gas capable of continuous treatment is provided.

In the above and the embodiments, the apparatus for removing particulate matter from exhaust gas of a diesel vehicle equipped with a diesel engine has been described. However, the present invention is not limited to this, and a land engine using a large or small diesel engine. Needless to say, it can be used for treating marine engines, cogeneration, and other exhaust gases containing particulate matter. Hereinafter, the present invention will be described in detail with reference to examples, but the same reference numerals will be used for the same members and the same applications, and the description thereof will be omitted.

[0026]

Embodiment 1 An embodiment will be described below with reference to the drawings. As shown in FIGS. 1 (a), (b) to 2 (a), (b), this filter device 1 has a felt-like laminate 2 (fibrous structure) in which ceramic fibers are superposed irregularly.
The filter 3 made of is sandwiched between a wire mesh holder 4 and a wire mesh electric heater 5 that conducts and generates heat, and is constrained. It is a fiber structure. This filter detects predetermined clogging with a sensor after adhering and depositing particulate matter between the fibers of the filter 3 when filtering the particulate matter in the exhaust gas entering from the exhaust gas introduction pipe 7 with the filter 3. This is then switched to an incineration site and incinerated to regenerate the filter.

The filter device 1 shown in FIGS. 1 and 2 is divided into a large number (in this case, 24) of filter sections 6 (the hatched portions indicate one section). 8 is provided with a middle cylinder 10 provided with a window 9 for venting exhaust gas. A rotary shutter 11 is provided therein so that the rotary shutter 11 can be turned by the shaft 12. In this state, the rotary shutter 11 shuts off only the filter section inlet 8 'and closes the exhaust gas passage. However, the filter section 6 ', which has been blocked from the exhaust gas flow, is glowed to a high temperature by the electric heater 5, and the particulate matter deposited on the filter section 6' is heated and incinerated. At this time, air for assisting combustion is supplied from the air supply pipe 13. That is, one filter section inlet 8 'is shut off by the rotary shutter 11, so that one filter section 6' is closed. By repeating this in order, the particulate matter in the entire filter device 1 is incinerated by the heating power of one filter section, and the particulate matter removing device is regenerated. That is, the filter device 1 uses 1/24 of the conventional power.
Can be played.

This heating of the filter section may cause the filter 3 to reach a high temperature near 1000 ° C. At this time, the temperature can be adjusted even if the degree of opening and closing of the rotary shutter 11 is adjusted.

The high-temperature filter section 6 'radiates residual heat (radiant heat) to the other adjacent filter sections 6, and requires less power when the filter section 6' is heated.

In the above embodiment, air for assisting combustion is introduced from the air supply pipe 13, but may be introduced from the rotary shutter 11 through the shaft 12. Although one filter section 6 is shown as a hatched portion 1/24, it can be set freely such as 1/12 or 1/6.

[0031]

Embodiment 3 This embodiment is shown in FIGS. The wall flow honeycomb 14 may be made of a silicon carbide material which withstands high temperatures but has a problem in high-temperature electrical insulation, but is preferably made of a cordierite material having good insulation properties. In the wall flow honeycomb 14, since the exhaust gas path is only in the axial direction, the filter section can be formed in the same manner as the divided section without dividing. The exhaust gas passage in the filter section 6 is blocked by a mask shutter 16 that moves sequentially around the central axis 15 of the wall flow honeycomb 14 as a fulcrum. That is, in the wall flow honeycomb 14, the filter section 6 is not clearly divided as in the first embodiment, and the boundary thereof is always moving. When the wall flow honeycomb 14 is fixed, the filter section 6 is reproduced by rotating the mask shutter 16 around the center axis 15. Also,
The filter section 6 can also be continuously reproduced by fixing the wall flow honeycomb 14 and rotating the mask shutter 16 around the central axis 15 as a fulcrum.
In the figure, reference numeral 17 denotes an air supply pipe.

In this wall flow honeycomb 14, wire-like electric heaters 18 are inserted into the cells which are alternately opened as shown in FIG. 4, whereby the filter section 6 under the heating section 19 (dotted line) of the mask shutter 16 is inserted. 'Heating. The wire-shaped electric heater 18 is preferably inserted into all cells. And these electric heaters 18
The terminal is centrally managed and arbitrarily heats a required heating location.

[0033]

Embodiment 3 This embodiment is shown in FIG. In the second embodiment, the electric heater 18 is inserted into almost all of the cells, and the heater and the mask shutter 16 are sequentially tuned and heated. However, in this embodiment, the electric heater 18 is not provided, and the heating unit 19 of the mask shutter 16 is connected. A hole 20 is provided, and a heating gas is sent from a combustion gas supply cylinder 21 to a predetermined section for incineration. In this case, it is not necessary to provide a section in particular, and the filter device 1 may be turned around the central axis 15.

[0034]

Embodiment 4 This embodiment is shown in FIGS. That is, the wall flow honeycomb 14 is divided into a large number in the axial direction to form a filter section 22 having a cross section of a citrus. Then, similarly to the second embodiment, a wire-like electric heater 1 is placed in the cell.
8 to heat the filter section 22. As shown in FIG. 7, a lid shutter 24 made of a heat-resistant metal operated by a spring 23 made of a shape memory alloy is provided on each filter section 22, as shown in FIG. Normally, electricity is not supplied, and the wall flow honeycomb 14 filters the exhaust gas. However, when the electric current is heated and the spring 23 ′ made of a shape memory alloy is pulled, the cover normal shutter 24 ′ is connected to the end face 25 of the section 22.
At the same time, the passage of the exhaust gas is shut off, and at the same time, the electric heater 18 in that portion is energized and heated to burn the particulate matter, and the filter in the section 22 'is regenerated. By repeating this in order, all sections are incinerated and the filter device is continuously regenerated. The lid-shaped shutter 24 ′ is brought into close contact with the end face 25 of the wall flow honeycomb 14 by pulling a shape memory alloy spring 23 ′. The lid-shaped shutter 24, which is not pulled by the spring 23 and is separated from the wall flow honeycomb 14, opens obliquely like blades of a turbine so that exhaust gas can easily flow.

In this embodiment, the shape memory alloy used is a spring. However, the present invention is not limited to this, and a shape memory alloy may be used for the lid shutter 24 itself. It should be understood that hinges, rotating cams, cylinders, motors and other components or mechanical mechanisms may be utilized to move.

[0036]

Embodiment 5 This embodiment shows an example in which the lid-like shutter 24 'is opened and closed by a rotating cam 26 shown by a dotted line instead of the shape memory alloy of the above-mentioned Embodiment 4.

In addition, a wall flow filter is used in the filter device.
Although the honeycomb is illustrated, a metal honeycomb may be used.

Each section 22 is preferably supplied with combustion air.

[0039]

Embodiment 6 This practical example is preferably constructed in a tangerine cross section as shown in FIG. Therefore, the ceramic honeycomb structure implemented in the practical examples 1 to 4,
Unlike the metal honeycomb structure, a metal honeycomb 29 formed by laminating a plurality of heat generating corrugated sheets 27 formed of a heat insulating metal foil having a thickness of 20 μm and an insulating flat plate 28 into a plurality of turns is used as a filter 22 in the section 22 of the filter device. Used as
The metal honeycomb 29 self-heats when energized, and the particulate matter (PM) on the core metal honeycomb 29 is incinerated. The electrical resistance of the heat-resistant metal foil Fe-20Cr-5A1 is 3
It is 146 (μΩ · cm) at 00 ° C. In other respects, a lid-like shutter 24 (with an air supply pipe) made of a shape memory alloy is brought into close contact with the section 22 by heating and energizing in the same manner as in Practical Example 2 to block the exhaust gas passage. At the same time, the corresponding portion of the metal honeycomb 29 is heated to burn off the particulate matter, and the filter of the section 22 is regenerated. By repeating this sequentially, all sections are incinerated and the filter device is continuously regenerated. Of course, a revolving mask shutter may be used for this.

[0040]

Embodiment 7 A metal honeycomb 29 formed by laminating a heat generating corrugated plate 27 formed of a heat-resistant metal foil having a thickness of 20 μm and an insulating flat plate 28, which is used in Embodiment 5, is wound up many times. Used as a device. The section 22 of the honeycomb structure is circumferentially divided into concentric circles (donuts) as shown in FIG. 9, and each donut section 30 is correspondingly concentric (donuts) on top.
Lid-shaped shutter divided into exercises 30.31.32.
33. Is provided so that it can be opened and closed freely. The rest is the same as in the fifth embodiment. In the drawing, reference numeral 34 shows a state in which one of the donut-shaped sections is closed. This is applicable to the conventional example shown in FIG.

[0041]

Embodiment 8 This embodiment is shown in FIG. In this example, the section of the metal honeycomb of the heat-resistant metal foil of Example 5 was a rectangular block. A corresponding rectangular lid-shaped shutter 35 is attached to this by a hinge. In this, at least one rectangular lid shutter 35 'is closed.

[0042]

Embodiment 9 This embodiment can be applied to all of the above filter sections. That is, high and low pressure air is blown into the individually closed filter sections from the appropriate air supply pipe in a predetermined cycle to send a pulse, and the filters are vibrated to shake ash accumulated in each filter. Drop it and blow it away.

The filter material used in the above-mentioned filter section preferably has a two-layer structure in which a coarse non-woven cloth made of silicon carbide fibers or a dense felt is combined, but is not limited thereto. A fiber structure or a combination thereof can be freely applied. The insulation of the metal honeycomb is not limited to the insulator on the flat plate, and each of the flat plate of the metal foil and the corrugated plate of the metal foil may be covered with an insulating film. Further, the shapes and configurations of the filter device and the filter section are not limited to those of the embodiment, and can be freely set. Of course, a section without setting a section may be used. The present invention includes a filter device in which one filter device is divided into a plurality of filter sections and a shutter for blocking an inlet of the filter section is provided. Undivided filter devices are also included. That is, a rotary shutter, a cam, etc., at the center of the filter device, include a shutter that sequentially closes and opens the filter section entrance while rotating. Shutters that correspond individually to the filter section inlets independently are included. That is, a rotary mask shutter capable of closing a filter section entrance such as a wall flow honeycomb or a metal honeycomb in which exhaust gas flows in an axial direction, a lid shutter, a mask shutter, and a gallery capable of individually closing the filter section entrance corresponding to the section. And a rotation mechanism, a cam, a cylinder, and the like for operating the shutter. At least a part of the member or the drive mechanism that constitutes the shutter includes one made of a shape memory alloy. By repeating reproduction of a plurality of filter sections, the entire filter device is continuously reproduced. Included is a filter device that individually pulses the occluded filter section to remove accumulated ash from the filter. Further, in the above-described embodiment, it has been described that ash is dropped by sending a pulse of air from the air supply pipe. However, a high-pressure air may be blown together with the air supply pipe or separately provided with a nozzle. A new or conventional particulate matter removing device, a catalyst device, or the like can be combined before or after the particulate matter removing device for diesel engine exhaust gas.

[0044]

As described in detail above, according to the present invention,
Various effects can be obtained as listed below.

(1) Particulate matter (PM) in the entire filter device can be incinerated by the electric power for heating one filter section. (2) Filter divided into many sections
Since each performs an independent function, only one filter device is sufficient. (3) Cost is 2 because only one filter device is required.
1/2 or less than the conventional required. The volume is less than 1/3. (4) Since the filter is not switched after the filter is clogged but is switched in small increments, the pressure loss is small and the engine is not burdened. (5) Since the pressure loss is small, a material having a finer gap between the nonwoven fabrics can be used, and the effect of removing particulate matter (PM) is improved.

[Brief description of the drawings]

FIG. 1A is a perspective view showing an embodiment of the present invention. (B) is a partial longitudinal sectional view of FIG. 1.

2 (a) and 2 (b) are partially longitudinal perspective views showing an enlarged main part of the filter of FIG. 1;

FIG. 3 is a perspective view showing a second embodiment.

FIG. 4 is an enlarged perspective view showing a part of the second embodiment.

FIG. 5 is a perspective view showing a third embodiment.

FIG. 6 is a plan view showing a fourth embodiment.

FIG. 7 is a sectional view taken along line AA of Example 4. The dotted line is a sectional view showing the cam of the fifth embodiment.

FIG. 8 is a plan view showing a sixth embodiment.

FIG. 9 is a schematic view showing Example 7 in cross section.

FIG. 10 is a perspective view showing an eighth embodiment.

FIG. 11 is a perspective view showing a conventional ceramic fiber structure.

FIG. 12 is an explanatory view of a conventional filter switching type particulate matter removing apparatus.

FIG. 13 is a perspective view showing a conventional ceramic honeycomb structure (wall flow honeycomb).

FIG. 14 is an explanatory view of a conventional filter device provided with a heating section.

[Explanation of symbols]

1. Filter device 2. Felt-like fiber laminate 3. Filter 4. Wire mesh holder 5. Electric heater 6. Filter section 6. 6. Filter section (closed inlet) 7. Exhaust gas path entry pipe 8. Filter section inlet 9. Filter section inlet (closed inlet) Medium cylinder 11. Rotary shutter 12. Shaft 13. Air supply pipe 14. Wall flow honeycomb 15. Center axis 16. Mask shutter 17. Air supply pipe 18. Electric heater 19. Heating section (dotted line) 20. Through hole 21. Combustion gas supply pipe 22. Tangerine bag filter section 23. Spring 24. Lid-shaped shatter 24. 25. Lid shutter (closed end) End face of honeycomb 26. Cam 27. Electric heater corrugated plate 28. Insulator flat plate 29. Metal honeycomb 30. 31.32.2.3. Donut-shaped lid shutter 34. Donut-shaped lid shutter (closed) 35. Square lid shutter 35. Square lid shutter (closed)

Continued on the front page F term (reference) 3G090 AA01 AA02 BA02 BA04 CB00 CB11 CB14 EA01 4D058 JA10 JA32 JB03 JB06 KA08 MA42 QA01 QA03 QA19 SA08

Claims (8)

[Claims] A diesel engine exhaust particulate matter removal device (DPF) comprising a nonwoven fabric filter, a wall flow honeycomb, or a metal honeycomb filter that promotes the particulate matter (PM) is a plurality of filter sections. In a filter device that is divided into or divided, the exhaust gas that enters the filter section is closed by closing a shutter provided at the entrance of the filter section, so that the passage of the exhaust gas that enters the individual filter section is closed. A particulate matter removing device for diesel engine exhaust gas, wherein the particulate matter (PM) deposited on the filter is incinerated in the blocked filter section to regenerate the filter. 2. The apparatus for removing particulate matter from diesel engine exhaust gas according to claim 1, wherein the shielding member at the inlet of the filter section comprises a rotary shutter. 3. The apparatus for removing particulate matter from diesel engine exhaust gas according to claim 1, wherein the shielding member for turning or rotating the shutter at the inlet of the filter section is formed by a mask shutter. 4. The apparatus for removing particulate matter from diesel engine exhaust gas according to claim 1, wherein a mask shutter at the entrance of the filter section is provided individually for each section. 5. A separately provided mask shutter at the inlet of the filter section is opened and closed or slid (reciprocated) by one cam or by a separate cylinder, motor, cam, lever or other mechanical hinge. 5. The particulate matter removing device for diesel engine exhaust gas according to claim 1, wherein the particulate matter is opened and closed. 6. The heating of the closed filter section is supplemented with air sufficient to incinerate particulate matter (PM) in the section.
8. The apparatus for removing particulate matter from diesel engine exhaust gas according to 7. 7. The apparatus for removing particulate matter from diesel engine exhaust gas according to claim 1, wherein residual heat generated by heating and incineration of the filter section is transmitted to other filter sections. 8. An apparatus for removing particulate matter from diesel engine exhaust gas according to claim 1, wherein a pulse (pulsation) of air is appropriately sent into said closed filter section to remove ash accumulated in the filter.