CN104533573B - Exhaust particulate matter collection device and control method thereof - Google Patents
Exhaust particulate matter collection device and control method thereof Download PDFInfo
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- CN104533573B CN104533573B CN201410596564.6A CN201410596564A CN104533573B CN 104533573 B CN104533573 B CN 104533573B CN 201410596564 A CN201410596564 A CN 201410596564A CN 104533573 B CN104533573 B CN 104533573B
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Abstract
The invention discloses an exhaust particulate matter collection device and a control method of the device. Whirlwind flow generated by a whirlwind collection device and adsorption of a wall flow type particulate matter filter element are successively utilized for carrying out two-stage removing on particulate matter, and the particulate matter collection efficiency is improved. Due to the fact that before exhaust air enters the wall flow type particulate matter filter element, the whirlwind flow is firstly utilized for removing particulate matter of the large size, the working strength of the wall flow type particulate matter filter element with the high cost is relieved, and the regeneration period and the service life are prolonged. According to the regeneration mode, a second air inlet valve is arranged on an exhaust pipe, and exhausted air can be utilized for carrying out reverse backward blowing. The exhaust particulate matter collection device is simple in structure, normal running of the engine is not affected, and the cost and the control difficulty can be effectively reduced.
Description
Technical field
The invention belongs to motor vehicle emission post processing field is and in particular to a kind of tornado flow of automobile-used available tail gas blowback
Dynamic formula two-stage particulate matter trap.
Background technology
Pollutant in engine exhaust also include solid-state and fluid contaminants except gaseous contaminant, afterwards both main with
Presented in tiny particulate matter, environment is caused with serious pollution.Multiple country of the world is in automobile exhaust at present
Particle concentration is all defined.Granular material discharged in order to reduce, reach environmental standard and require, using in row more than current automobile
The method increasing particulate matter trap on trachea is collected to the particulate matter in aerofluxuss, to reduce particle concentration in aerofluxuss.
Introduction according to pertinent literature (field is red. the development [j] of diesel engine particulate thing catcher. automobile engineer, and 2011 (8)),
At present particulate matter trap has a following main feature: first, in order to improve the adsorption efficiency to fine particle for the filter element, adopt more
Gas flow pattern with wall-flow type；Second, when in filter element, particulate matter is excessive, after blocking filter element, can be combustion-supporting using heating, oil spout
Clear up these particulate matters etc. mode, so that filter element is regenerated.
The Chinese patent (cn 203362270 u) of entitled diesel engine unit exhaust particulate thing processing meanss is had with this patent
It is clearly distinguished from.In this patent, device is applied to marine diesel, does not wherein contain the filter element with particulate matter capturing ability, but
Employ the adsorbent equipment of activated carbon formula in cleaner bottom secction.Therefore it does not possess recyclability substantially, and for fine grained
Thing (5 μm of ＜) does not have trapping ability substantially.
Content of the invention
It is an object of the invention to provide a kind of exhaust particulate capturing device and its control method, can improve to aerofluxuss
The trapping disposal ability of middle particulate matter, reduces processing cost.
To achieve these goals, present invention employs technical scheme below:
A kind of exhaust particulate capturing device, this capturing device includes cyclone type catcher, the first air intake valve, second enters
Air valve, outlet valve, ash discharge valve and wall-flow particulate thing filter element, described wall-flow particulate thing filter element is arranged at cyclone type
In catcher, between the side of wall-flow particulate thing filter element and the inwall of cyclone type catcher, leave gap, wall-flow particulate thing
One end of filter element is adjacent for the section collecting settling particulate matter with cyclone type catcher, and the other end is arranged at cyclone type trapping
At the air inlet of device, and the described other end is connected with the venting conduit inlet at cyclone type catcher top, and outlet valve is arranged at
The exit of described exhaustor, the first air intake valve is connected with described air inlet, the side of the second air intake valve and described exhaustor
Wall is connected, and ash discharge valve is arranged at the described bottom opening of section for collecting settling particulate matter.
Described first air intake valve, the second air intake valve, outlet valve and ash discharge valve adopt electromagnetic valve.
Described capturing device also includes laying dust position sensor, laying dust position sensor be arranged at described for collecting sedimentation
In the section of particulate matter.
Described laying dust position sensor includes being arranged at the described insulating support for collecting in the section of settling particulate matter
And it is arranged at two metal polar plates on described insulating support, two metal polar plates are oppositely arranged and leave gap, two gold
Belong to pole plate to be connected with electric capacity/voltage conversion circuit.
Described insulating support is tubular structure, one end of the one end open of tubular structure and described wall-flow particulate thing filter element
Relatively, another end opening of tubular structure is relative with described bottom opening, and two metal polar plates are arranged at tubular structure inwall
Upper end edge.
Described capturing device also includes gas pressure sensor, and gas pressure sensor is arranged in described gap.
The control method of above-mentioned exhaust particulate capturing device, comprises the following steps:
1) first, second air intake valve is connected with air vent respectively, then selects to enter trap particulate matter working condition；
2) under trap particulate matter working condition, outlet valve and the first air intake valve are opened, the second air intake valve with
And ash discharge valve closing, aerofluxuss enter cyclone type catcher through the first air intake valve and form downward rotary pneumatic along described gap
Stream, makes larger particulate matter in aerofluxuss be settled down to above ash discharge valve, then, aerofluxuss are entered by the bottom of wall-flow particulate thing filter element
Enter wall-flow particulate thing filter element, the less particulate matter in aerofluxuss by wall-flow particulate thing filter element filtering, the aerofluxuss after filtration by
Outlet valve discharges cyclone type catcher；
3) under trap particulate matter working condition, if the air pressure in cyclone type catcher is more than air pressure threshold value, or described use
Settling height in the section endoparticle thing collecting settling particulate matter is more than height threshold, then select to enter reproduction operation state；
4) under reproduction operation state, outlet valve and the first air intake valve are closed, the second air intake valve and ash discharge
Valve is opened, and aerofluxuss are entered wall-flow particulate thing filter element and purged by the top of wall-flow particulate thing filter element through the second air intake valve
It is deposited in the particulate matter in wall-flow particulate thing filter element, purge out the particulate matter of wall-flow particulate thing filter element and be deposited in ash discharge
Particulate matter above valve discharges cyclone type catcher through ash discharge valve；
5) in the range of the duration threshold of reproduction operation state, if the air pressure in cyclone type catcher is less than or equal to gas
The settling height of pressure threshold value and described particulate matter is less than or equal to height threshold, then switch to trap particulate matter by reproduction operation state
Working condition, otherwise, is continually maintained under reproduction operation state.
Beneficial effects of the present invention are embodied in:
Exhaust particulate capturing device of the present invention, successively utilizes cyclonic flow (cyclone type catcher) and wall-flow type
Absorption means (wall-flow particulate thing filter element) carry out two-stage removal to particulate matter, improve particle collection efficiency；And due to
Amass larger particulate matter first with whirlwind flowing removing body before aerofluxuss enter wall-flow particulate thing filter element, alleviate cost relatively
The working strength of high wall-flow particulate thing filter element, extends regeneration period and working life.On regeneration, the present invention exists
It is provided with the second air intake valve, available aerofluxuss carry out reversely blowing, structure is simple, does not affect aerofluxuss generating means at exhaustor
The normal operation of (such as electromotor), and can effectively reduces cost and control difficulty.
Further, according to the air pressure in catcher and dust pile accumulated amount, the present invention can judge whether that needs are carried out again
Raw, improve the automaticity of control.
Brief description
Fig. 1 is the structural representation of automobile exhaust particlate trap system described in embodiment；
Fig. 2 is the trap particulate matter working state schematic representation of automobile exhaust particlate trap system described in embodiment；
Fig. 3 is the reproduction operation view of automobile exhaust particlate trap system described in embodiment；
Fig. 4 is the structural representation of described laying dust position sensor；
Fig. 5 is the operation principle schematic diagram of described laying dust position sensor；
In figure: 1, engine exhaust port, 2, fall blowing valve, 3, gas outlet, 4, outlet valve, 5, the filter of wall-flow type fine particle
Core, 6, gas pressure sensor, 7, catcher housing, 8, laying dust position sensor, 9, cleaning valve, 10, air intake valve, 11,
Bulky grain thing settles, and 12, sheet metal, 13, insulating support, 14, the particulate matter piled up.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Referring to Fig. 1, exhaust particulate capturing device of the present invention includes cyclone type catcher, the first air intake valve (i.e.
Air intake valve 10), the second air intake valve (fall blowing valve 2), outlet valve 4, ash discharge valve (clearing up valve 9) and wall stream
Formula particulate matter filter element, described wall-flow particulate thing filter element is arranged in cyclone type catcher, the side of wall-flow particulate thing filter element
Leave gap and the inwall of cyclone type catcher between, one end of wall-flow particulate thing filter element and cyclone type catcher are for receiving
The section of collection settling particulate matter is adjacent, and the other end is arranged at the air inlet of cyclone type catcher, and the described other end and rotation
The venting conduit inlet at wind formula catcher top is connected, and outlet valve 4 is arranged at outlet (the i.e. gas outlet 3) place of described exhaustor,
First air intake valve is connected with described air inlet, and the second air intake valve is connected with the side wall of described exhaustor (i.e. the second intake valve
Door is located between the entrance of exhaustor and outlet), ash discharge valve is arranged at the bottom of the described section for collecting settling particulate matter
At portion's opening.
Described first air intake valve, the second air intake valve, outlet valve 4 and ash discharge valve adopt electromagnetic valve, to control
System.
Described capturing device also includes laying dust position sensor 8, laying dust position sensor 8 be arranged at described in be used for collecting heavy
In the section of fall particulate matter.Described laying dust position sensor 8 include being arranged at described for collecting in the section of settling particulate matter
Insulating support 13 and be arranged at two metal polar plates (i.e. sheet metal 12) on described insulating support, two metal polar plate phases
To arranging and leaving gap, two metal polar plates are connected with electric capacity/voltage conversion circuit.Described insulating support 13 is tied for tubular
Structure, the one end open of tubular structure is relative with one end of described wall-flow particulate thing filter element, another end opening of tubular structure with
Relatively, two metal polar plates are arranged at the upper end edge of tubular structure inwall to described bottom opening.
Described capturing device also includes gas pressure sensor 6 (for detecting the air pressure in cyclone type catcher), gas
Pressure transducer is arranged in described gap (between wall-flow particulate thing filter element and cyclone type catcher).
Referring to Fig. 2 and Fig. 3, the control method of above-mentioned exhaust particulate capturing device, comprise the following steps:
1) first, second air intake valve is connected with air vent respectively, then selects to enter trap particulate matter working condition；
2) under trap particulate matter working condition, outlet valve 4 and the first air intake valve are opened, the second air intake valve with
And ash discharge valve closing, aerofluxuss enter cyclone type catcher through the first air intake valve and form downward rotary pneumatic along described gap
Stream, makes larger particulate matter in aerofluxuss be settled down to above ash discharge valve, then, aerofluxuss are entered by the bottom of wall-flow particulate thing filter element
Enter wall-flow particulate thing filter element, the less particulate matter in aerofluxuss by wall-flow particulate thing filter element filtering, the aerofluxuss after filtration by
Outlet valve 4 discharges cyclone type catcher；
3) under trap particulate matter working condition, if the air pressure in cyclone type catcher is more than the air pressure threshold value setting, or
The settling height of the described section endoparticle thing for collecting settling particulate matter is more than the height threshold setting, then select to enter again
Raw working condition；
4) under reproduction operation state, outlet valve 4 and the first air intake valve are closed, the second air intake valve and ash discharge
Valve is opened, and aerofluxuss are entered wall-flow particulate thing filter element and purged by the top of wall-flow particulate thing filter element through the second air intake valve
It is deposited in the particulate matter in wall-flow particulate thing filter element, purge out the particulate matter of wall-flow particulate thing filter element and be deposited in ash discharge
Particulate matter above valve discharges cyclone type catcher through ash discharge valve；
5) in the range of the duration threshold of reproduction operation state, if the air pressure in cyclone type catcher is less than or equal to institute
The air pressure threshold value stated and the settling height of described particulate matter are less than or equal to described height threshold, then switched by reproduction operation state
To trap particulate matter working condition, otherwise, it is continually maintained under reproduction operation state；Surpass when the persistent period of reproduction operation state
When crossing described duration threshold, then output alarm signal.
Embodiment
A kind of automobile exhaust particlate trap system, adopts cyclonic flow and wall-flow type to particulate matter in engine exhaust
According to the air pressure in catcher and dust pile accumulated amount, absorption two stages for the treatment of, judges whether that needs are regenerated, regeneration is anti-
Purge to introducing engine exhaust.Critical piece includes bulky grain thing cyclone type catcher, wall-flow type fine particle filter element 5, row
Gas blows system and regeneration threshold decision sensor, and described regeneration threshold decision sensor includes the gas being arranged in catcher
The laying dust position sensor 8 of pressure transducer 6 and catcher bottom；Aerofluxuss are blown involved blowing valve 2 in system, are given vent to anger
Valve 4, cleaning valve 9 and air intake valve 10 are electromagnetic valve, to realize automatically controlling.
Cyclone type catcher top is barrel-shaped, and bottom is conical (conical hopper), so that larger particulate matter deposition
After can concentrate near laying dust position sensor, so that it accurately judges laying dust amount；And concentrate particulate matter accumulated, it is also convenient for clear
Reason.Due to employing the larger particulate matter that laying dust position sensor judges that cyclone type catcher is collected, for ensureing particulate matter energy
It is collected in catcher lower end under gravitional force, therefore this device installation direction adopts longitudinally mounted mode, and ensures air outlet valve
Door 4 is located at upper end, and cleaning valve 9 is located at lower end.For the feature of laying dust, in this device, laying dust position sensor adopts electric capacity to pass
Sensor.The pipeline that this device air intake valve 10 is located tangentially need to be arranged with catcher housing 7, and such guarantee aerofluxuss enter
It is in cyclonic flow after catcher.
Automobile exhaust (i.e. tail gas), after tangential entrance particlate trap system, can form swirling eddy, wherein matter first
Measure larger particulate matter to be thrown on wall due to centrifugal action, after collision with wall, be affected by gravity and be settled down to catcher
At bottom pyramidal funnel, and deposit so far, this is that the first order whirlwind to particulate matter is processed.Subsequently other less particulate matters can
Up to continue with air-flow, through the filtration of wall-flow type fine particle filter element 5, trap a certain amount of particulate matter again.
When in wall-flow type fine particle filter element particulate matter excessively affect smooth gas discharge or cyclone type catcher lower end laying dust excessive when, this dress
Put and aerofluxuss reversely can be introduced through blowing valve 2, clear up the laying dust in filter element and catcher using aerofluxuss kinetic energy.
Referring to Fig. 1, the automobile exhaust particlate trap system that the present embodiment is given, including fall blowing valve 2, outlet valve 4,
Wall-flow type fine particle filter element 5, gas pressure sensor 6, catcher housing 7, laying dust position sensor 8, clear up valve 9, enter
Air valve 10 etc..Wherein blowing valve 2 and air intake valve 10 are connected in parallel on the exhaust pipe of engine；Gas pressure sensor 6 is installed
On catcher housing 7, laying dust position sensor 8 is located at the top of cleaning valve 9；Wall-flow type fine particle filter element 5 is arranged on
The internal place on the upper side of catcher housing 7, and keep certain distance with catcher housing bottom.
Referring to Fig. 2 and Fig. 3, the present invention has two kinds of working conditions, i.e. trap particulate matter working condition and reproduction operation state.
Under trap particulate matter working condition, after exhaust gas flow is discharged from engine exhaust port 1, enter trapping through air intake valve 10
In device, and form swirling eddy, and larger particulate matter can be made to deposit to the top of cleaning valve 9, this is single filter.With
Air-flow can enter from the bottom of wall-flow type fine particle filter element 5 afterwards, the air-flow warp after cascade filtration fine particle, after filtration
Cross outlet valve 4 to discharge from catcher.Under reproduction operation state, after exhaust gas flow is discharged from engine exhaust port 1, pass through
Fall blowing valve 2, from the upper end of wall-flow type fine particle filter element 5 enter, blow away the particulate matter of wherein accumulation, after through clearing valve door
9 discharge catchers, laying dust cleared away etc. can impact in a container, and finally unification is processed.
In order to prevent laying dust in catcher from excessively particle collection is impacted, the present invention installs one in catcher bottom
Individual laying dust position sensor 8, to judge laying dust amount；When laying dust reach a certain height, sensor signal can indicate that automobile ecu enters
Enter reproduction operation state (carrying out blowback cleaning).Because laying dust is superfine little powder, its accumulating amount is judged to adopt
Position sensor with float；According to photoelectric position sensor, in aerofluxuss, soot can pollute to its optics, leads to
Sensor failure；Additionally, due to the adjacent cleaning in its underpart valve, also cannot design strain gauge element and it is weighed.Pin therefore of the present invention
Characteristic to laying dust, devises a condenser type laying dust position sensor, and its essential structure is as shown in Figure 4.Its ultimate principle is
Different according to the medium in capacitor, the principle design that condenser capacitance size changes can be caused.From physicss,
The capacitance of capacitor is to constitute the shape at the two poles of the earth, the function of size, mutual alignment and dielectric Constant of capacitor.Electricity
Capacity of condenser is:
In formula, c is electric capacity, and ε is the dielectric constant of two contrasted between solid dielectric；S is the two poles of the earth relative effective area；δ is between the two poles of the earth
Gap.As long as ensureing now that the value of s and δ is constant, only change the value of ε it is possible to the change of this parameter is changed into single electric capacity
The change of amount, then pass through measures conversion circuit, convert thereof into voltage signal and supply controller to process, referring to Fig. 5.
As shown in figure 4, there being the meniscate sheet metal of two panels 12 in laying dust position sensor, it is attached to columnar insulation
Inside frame, and require to leave certain interval between two metal sheets, this two panels sheet metal is the two poles of the earth of sensor, the electricity of two interpolars
Capacity signal is the output signal of sensor.In order to ensure accuracy of judgement, the two poles of the earth of sensor are designed to narrower shape, and
It is attached to the upper end of insulating support.So can ensure that laying dust once highly reaching the position at the two poles of the earth, the electric capacity that sensor is constituted
Medium in device will sport laying dust by tail gas, and the capacitance of its output arises that more apparent change, improve to judge
Precision.Show according further to lot of experimental data, the vehicle emission component overwhelming majority is co2、h2O and n2, and the composition of particulate matter
Composition is also relatively stable, is substantial amounts of dry soot, sulfate and dissolved organic matter, therefore both difference in dielectric constant are relatively
For stable, the capacitance of its capacitor constituting has notable difference, and therefore this determination methods are feasible.
The control flow of the present invention is as follows: gas pressure sensor 6 and laying dust position sensor 8 can monitor in real time catchers
Internal gas pressure and laying dust amount；If air pressure and laying dust amount are within normal range, air intake valve 10 and outlet valve 4 are opened, and blow valve
Door 2 and cleaning valve 9 are closed, and catcher can normal trap particulate matter.If catcher internal gas pressure or laying dust amount exceed threshold value, fall
Blowing valve 2 and cleaning valve 9 are opened, and air intake valve 10 and outlet valve 4 are closed, and engine exhaust opposite direction can be drawn by catcher
Enter, device inside is cleared up, realize the regeneration of this device；During blowing, gas pressure sensor 6 and laying dust position pass
Sensor 8 can monitor catcher internal gas pressure and laying dust amount always, only after air pressure and laying dust amount return normal, just can open air inlet
Valve 10 and outlet valve 4, close blowing valve 2 and cleaning valve 9, carry out the trapping of particulate matter, otherwise can continue to blow again
Raw work；After this stage certain time, if air pressure and laying dust amount still exceed threshold value, output alarm signal, show
Possible blowback system or sensor experiences failure, need further maintenance and repair.
Above-mentioned automobile exhaust particlate trap system is compared with prior art:
1st, the present invention carries out two-stage removal using cyclonic flow and wall-flow type absorption to particulate matter, improves particulate matter and catches
Collection efficiency；
2nd, great number tested data shows, in the particulate matter that automobile is discharged, although the particulate matter number concentration of more than 5 μm of particle diameter
Relatively low, but its mass concentration is very high；Tail gas is carried out whirlwind shape flowing by this device, can remove the bulky grain of more than 5 μm of particle diameter
Thing, can effectively reduce the working strength of wall-flow type fine particle filter element, extend the service life of filter element, reduce use cost；
3rd, the tactful regenerating particulate capturing device being blown using engine exhaust, is not affected electromotor and normally runs, and
Structure is simple, with low cost；
4th, judge whether that needs are blown regeneration according to catcher internal gas pressure, the row that catcher blocking causes can be prevented
Gas back pressure is too high, the normal operation of impact electromotor；Judge whether that needs are cleared up according to catcher inner product dust quantity, improve
The arresting efficiency of catcher.
Claims (5)
1. a kind of exhaust particulate capturing device it is characterised in that: this capturing device includes cyclone type catcher, the first intake valve
Door, the second air intake valve, outlet valve (4), ash discharge valve and wall-flow particulate thing filter element, described wall-flow particulate thing filter element
It is arranged in cyclone type catcher, between the side of wall-flow particulate thing filter element and the inwall of cyclone type catcher, leave gap,
One end of wall-flow particulate thing filter element is adjacent for the section collecting settling particulate matter with cyclone type catcher, and the other end is arranged
At the air inlet of cyclone type catcher, and the described other end is connected with the venting conduit inlet at cyclone type catcher top, goes out
Air valve (4) is arranged at the exit of described exhaustor, and the first air intake valve is connected with described air inlet, the second air intake valve with
The side wall of described exhaustor is connected, and ash discharge valve is arranged at the described bottom opening of section for collecting settling particulate matter；
Described capturing device also includes laying dust position sensor (8), laying dust position sensor be arranged at described for collecting sedimentation
In the section of particulate matter；
Described capturing device also includes gas pressure sensor (6), and gas pressure sensor is arranged in described gap.
2. according to claim 1 a kind of exhaust particulate capturing device it is characterised in that: described first air intake valve,
Two air intake valves, outlet valve (4) and ash discharge valve adopt electromagnetic valve.
3. according to claim 1 a kind of exhaust particulate capturing device it is characterised in that: described laying dust position sensor
(8) include being arranged at the described insulating support (13) for collecting in the section of settling particulate matter and be arranged at described insulation
Two metal polar plates on frame, two metal polar plates are oppositely arranged and leave gap, two metal polar plates and electric capacity/voltage conversion
Circuit is connected.
4. according to claim 3 a kind of exhaust particulate capturing device it is characterised in that: described insulating support (13) be cylinder
Shape structure, the one end open of tubular structure is relative with one end of described wall-flow particulate thing filter element, and the other end of tubular structure is opened
Mouth is relative with described bottom opening, and two metal polar plates are arranged at the upper end edge of tubular structure inwall.
5. a kind of control method of exhaust particulate capturing device as claimed in claim 1 it is characterised in that: include following walking
Rapid:
1) first, second air intake valve is connected with air vent respectively, then selects to enter trap particulate matter working condition；
2) under trap particulate matter working condition, outlet valve (4) and the first air intake valve are opened, the second air intake valve and
Ash discharge valve closing, aerofluxuss form downward rotary pneumatic through the first air intake valve entrance cyclone type catcher and along described gap
Stream, makes larger particulate matter in aerofluxuss be settled down to above ash discharge valve, then, aerofluxuss are entered by the bottom of wall-flow particulate thing filter element
Enter wall-flow particulate thing filter element, the less particulate matter in aerofluxuss by wall-flow particulate thing filter element filtering, the aerofluxuss after filtration by
Outlet valve (4) discharges cyclone type catcher；
3) under trap particulate matter working condition, if the air pressure in cyclone type catcher be more than air pressure threshold value, or described for receiving
The settling height of the section endoparticle thing of collection settling particulate matter is more than height threshold, then select to enter reproduction operation state；
4) under reproduction operation state, outlet valve (4) and the first air intake valve are closed, the second air intake valve and ash-valve
Door is opened, and aerofluxuss are entered wall-flow particulate thing filter element and purged heap by the top of wall-flow particulate thing filter element through the second air intake valve
Amass the particulate matter in wall-flow particulate thing filter element, purge out the particulate matter of wall-flow particulate thing filter element and be deposited in ash-valve
The particulate matter of door top discharges cyclone type catcher through ash discharge valve；
5) in the range of the duration threshold of reproduction operation state, if the air pressure in cyclone type catcher is less than or equal to air pressure threshold
The settling height of value and described particulate matter is less than or equal to height threshold, then switch to trap particulate matter work by reproduction operation state
State, otherwise, is continually maintained under reproduction operation state.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410596564.6A CN104533573B (en) | 2014-10-29 | 2014-10-29 | Exhaust particulate matter collection device and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410596564.6A CN104533573B (en) | 2014-10-29 | 2014-10-29 | Exhaust particulate matter collection device and control method thereof |
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| CN104533573A CN104533573A (en) | 2015-04-22 |
| CN104533573B true CN104533573B (en) | 2017-01-25 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194339A (en) * | 2016-07-18 | 2016-12-07 | 深圳市金动科力实业有限公司 | A kind of exhaust gas purification and treatment device and diesel generating set |
| CN107442285B (en) * | 2017-07-27 | 2023-03-24 | 重庆科技学院 | Electrostatic filter |
| CN113550811B (en) * | 2021-06-02 | 2022-05-20 | 内蒙古农业大学 | Diesel engine exhaust particulate matter trap and trapping method thereof |
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| DE1519963A1 (en) * | 1966-01-25 | 1969-04-17 | Berz Dipl Ing Max | Device for separating solid particles |
| GB2048098A (en) * | 1979-05-10 | 1980-12-10 | Takuwa Co Ltd | Filter Apparatus |
| US5634952A (en) * | 1994-06-21 | 1997-06-03 | Ngk Insulators, Ltd. | Exhaust gas filter and apparatus for treating exhaust gases using the same |
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| CN104533573A (en) | 2015-04-22 |
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