CN108708780A - A kind of vehicle-mounted adsorption/desorption device being desorbed using waste heat from tail gas - Google Patents
A kind of vehicle-mounted adsorption/desorption device being desorbed using waste heat from tail gas Download PDFInfo
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- CN108708780A CN108708780A CN201810494728.2A CN201810494728A CN108708780A CN 108708780 A CN108708780 A CN 108708780A CN 201810494728 A CN201810494728 A CN 201810494728A CN 108708780 A CN108708780 A CN 108708780A
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- Prior art keywords
- valve
- pipeline
- engine
- adsorbent equipment
- temperature
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
- F01N3/0835—Hydrocarbons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
- F01N3/0885—Regeneration of deteriorated absorbents or adsorbents, e.g. desulfurization of NOx traps
Abstract
A kind of vehicle-mounted adsorption/desorption device being desorbed using waste heat from tail gas, belongs to field of internal combustion engine.Air inlet pipe is connected in series with engine, and ternary catalyzing unit, the first valve and engine are connected in series with by exhaust pipe；Adsorb pipeline, the second valve, drying device, adsorbent equipment, third valve, absorption pipeline is set to ternary catalyzing unit downstream, the first valve downstream, adsorber is set to adsorption tube road and is connected in parallel with exhaust pipe by adsorbing pipeline, adsorbent equipment upstream is provided with the second valve, drying device, adsorbent equipment downstream is provided with third valve, desorption pipeline, sorbing material is provided in adsorbent equipment, third valve controls adsorbent equipment discharge tail gas by adsorbing pipeline or desorption pipeline；Control unit receives engine rotational speed signal a, exhaust temperature signal b and controls the first, second and third valve by signal wire x, y, z, realizes the adsorption/desorption discharged to engine cold starting, can effectively reduce engine cold starting stage emission.
Description
Technical field
The present invention provides a kind of vehicle-mounted adsorption/desorption device and control strategy being desorbed using waste heat from tail gas, belongs to internal combustion engine
Field.
Background technology
Since engine cold starting stage ternary catalyzing unit cannot reach operating temperature, the discharge of engine cold starting stage HC
It cannot effectively be converted, control unit ECU needs increasing fuel emitted dose to ensure that engine smoothly starts in addition, largely
Unburned fuel is discharged into the form of HC among air.Show in NEDC state of cyclic operation is tested according to related test result,
90% HC discharges result from the engine cold starting stage.Therefore, the discharge of engine cold starting stage polluted gas is reduced
Continue to develop one of major issue urgently to be resolved hurrily as internal combustion engine.For adsorption technology because its cryogenic high pressure adsorbs, high-temperature low-pressure is de-
Attached feature is a kind of effective means for solving the discharge of engine cold starting stage HC.According to associated stand test result, in ring
Under conditions of border temperature is 20 DEG C, 75% or more of the discharge of engine cold starting stage HC can be adsorbed on and placed adsorption material
Among the adsorbent equipment of material.
Currently, the technical bottleneck of limitation adsorbent equipment application is how to realize the desorption and regeneration of sorbing material, traditional electricity
Heating mode can increase the consumption of energy, and moisture when the direct purging of high-temperature tail gas in tail gas can destroy sorbing material table
Face microcellular structure.
Therefore, design is a kind of not only can effectively reduce the discharge of engine cold starting stage HC, but also sorbing material may be implemented
The adsorbent equipment of abundant desorption and regeneration seem particularly necessary.
Invention content
The purpose of the present invention is to solve the problems, such as automobile engine cold start maximum discharge, provide a kind of to utilize waste heat from tail gas
The vehicle-mounted adsorption/desorption device and control strategy of desorption, automobile engine cold start rank not only can be effectively reduced using the system
Section HC discharge, realize the abundant desorption and regeneration of sorbing material, and avoid HC in old-fashioned adsorption system be desorbed in advance and
The short problem of sorbing material service life.
The present invention adopts the following technical scheme that：
Air inlet pipe air inlet pipe (1), engine (2), ternary catalyzing unit (3), the first valve (5), exhaust pipe (6), air inlet pipe
(1) it is connected in series with engine (2), ternary catalyzing unit (3), the first valve (5) are connected with engine (2) by exhaust pipe (6)
Connection；Pipeline (10), the second valve (11), drying device (12), adsorbent equipment (9), third valve (7) are adsorbed, pipeline is adsorbed
(10) it is set to ternary catalyzing unit (3) downstream, the first valve (5) upstream, adsorber (9) is set on absorption pipeline (10)
And be connected in parallel with exhaust pipe (6) by adsorbing pipeline (10), adsorbent equipment (9) upstream is provided with the second valve (11), does
Dry device (12) is provided with third valve (7), desorption pipeline (8) in adsorbent equipment (9) downstream, and third valve (7) passes through desorption
Pipeline (8) and air inlet pipe (1) connect, and sorbing material is provided in the adsorbent equipment (9), the maximum effectively absorption of the sorbing material
Temperature is N, and it is M that sorbing material minimum, which brushes desorption temperature, and sorbing material heatproof ceiling temperature is L, N < M < L, third valve
(7) adsorbent equipment (9) discharge tail gas can be controlled by adsorbing pipeline (10) or desorption pipeline (8)；Control unit (4) receives
Engine rotational speed signal a, exhaust temperature signal b and by signal wire x, y, z control the first valve (5), the second valve (11) and
Third valve (7).
Utilize the vehicle-mounted absorber of heat accumulating type as described above, it is characterised in that
When engine rotational speed signal a is zero, and exhaust temperature signal b is not more than (containing being equal to) set temperature N, control unit
(4) the first valve (5) is opened by signal wire x, y, close the second valve (11) and motor exhaust is made to pass through exhaust pipe (6) row
Go out；
When engine 2 starts, control unit (4) meets engine rotational speed signal a, exhaust temperature signal b, when engine turns
Fast signal a is not zero, exhaust temperature signal b be not more than (containing being equal to) set temperature N when, control unit (4) by signal wire x,
Y, z closes the first valve (5), opens the second valve (11) and motor exhaust is made to pass through third valve (7) by absorption pipeline
(10) it is discharged with exhaust pipe (6)；
When delivery temperature is more than set temperature N but is not more than (containing being equal to) set temperature M, control unit (4) passes through letter
Number line x, y open the first valve (5), and closing the second valve (11) simultaneously makes motor exhaust pass through exhaust pipe (6) discharge；
When delivery temperature is more than set temperature M, but is not more than (containing being equal to) set temperature L, control unit (4) passes through letter
Number line x, y, z controls the first valve (5) and keeps aperture Q (such as (0 ° is completely closed state to 75 ° -85 ° of aperture, and 90 ° is are beaten completely
Open state)), open the second valve (11), make engine section tail gas pass through drying device (12) it is dry after enter adsorbent equipment
(9) after, this partial tail gas is made to enter air inlet pipe via absorption pipeline (10) and desorption pipeline (8) by controlling third valve (7)
(1) to burning in engine (2)；
When delivery temperature is more than set temperature L, control unit (4) opens the first valve (5) by signal wire x, y, closes
It closes the second valve (11) and motor exhaust is made to pass through exhaust pipe (6) discharge.
The invention has the advantages that according to described in claim, adsorbent equipment (9) upstream is provided with drying device
(12), when directly purging desorption strategy using tail gas, the moisture in high-temperature tail gas is avoided to sorbing material surface micropore knot
The destruction of structure.
The present apparatus is under the premise of realizing adsorption/desorption of the sorbing material to engine cold starting stage pollutant, by dry
Dry device avoids in adsorbent equipment sorbing material surface microporous structure by high-temperature tail gas to the desiccation of adsorbent equipment air inlet
In moisture destroyed；Desorption mode is directly brushed by tail gas realizes the quick desorption and regeneration and absorption dress of adsorbent equipment
The recycling of pollutant in setting is burnt, and to improve the emission performance of engine fuel, economy extends making for adsorbent equipment
Use the service life.
Description of the drawings
The structure and fundamental diagram of Fig. 1 present invention
In figure：1, air inlet pipe, 2, engine, 3, ternary catalyzing unit, 4, control unit, the 5, first valve, 6, exhaust pipe, 7,
Third valve, 8, desorption pipeline, 9, adsorbent equipment, 10, absorption pipeline, the 11, second valve, 12, drying device
Specific implementation mode
The present invention is described further with reference to the accompanying drawings and detailed description：
As Fig. 1 includes：Air inlet pipe air inlet pipe (1), engine (2), ternary catalyzing unit (3), the first valve (5), exhaust pipe
(6), air inlet pipe (1) is connected in series with engine (2), and ternary catalyzing unit (3), the first valve (5) and engine (2) pass through exhaust
Pipe (6) is connected in series with；Pipeline (10), the second valve (11), drying device (12), adsorbent equipment (9), third valve (7) are adsorbed,
Absorption pipeline (10) is set to ternary catalyzing unit (3) downstream, the first valve (5) upstream, and adsorber (9) is set to adsorption tube
It is connected in parallel with exhaust pipe (6) on road (10) and by adsorbing pipeline (10), adsorbent equipment (9) upstream is provided with the second valve
(11), drying device (12) are provided with third valve (7), desorption pipeline (8), third valve (7) in adsorbent equipment (9) downstream
By the way that pipeline (8) and air inlet pipe (1) connection is desorbed, it is provided with sorbing material in the adsorbent equipment (9), the sorbing material is maximum
Effective adsorption temp is N, and it is M that sorbing material minimum, which brushes desorption temperature, and sorbing material heatproof ceiling temperature is L, N < M < L,
Third valve (7) can control adsorbent equipment (9) discharge tail gas by adsorbing pipeline (10) or desorption pipeline (8)；Control is single
First (4) receive engine rotational speed signal a, exhaust temperature signal b and control the first valve (5), the second valve by signal wire x, y, z
Door (11) and third valve (7).
When engine rotational speed signal a is zero, and exhaust temperature signal b is not more than (containing being equal to) set temperature N, control unit
(4) the first valve (5) is opened by signal wire x, y, close the second valve (11) and motor exhaust is made to pass through exhaust pipe (6) row
Go out；
When the engine is started, control unit (4) meets engine rotational speed signal a, exhaust temperature signal b, when engine turns
Fast signal a is not zero, when exhaust temperature signal b is not more than (containing being equal to) set temperature N, at this point, since ternary catalyzing unit (3) does not have
Have and reach operating temperature, need to start adsorption process, therefore, control unit (4) closes the first valve by signal wire x, y, z
(5), it opens the second valve (11) and motor exhaust is made to pass through third valve (7) and arranged by absorption pipeline (10) and exhaust pipe (6)
Go out；
When delivery temperature is more than set temperature N but is not more than (containing being equal to) set temperature M, delivery temperature has been more than at this time
The maximum effective adsorption temp of sorbing material, the decline of adsorption efficiency can be led to by continuing absorption, and therefore, control unit (4) passes through letter
Number line x, y open the first valve (5), and closing the second valve (11) simultaneously makes motor exhaust pass through exhaust pipe (6) discharge；
When delivery temperature is more than set temperature M, but is not more than (containing being equal to) set temperature L, delivery temperature is big at this time
Desorption temperature is brushed in sorbing material minimum, desorption process can be started, therefore, control unit (4) passes through signal wire x, y, z control
The first valve (5) is made to keep aperture Q (such as 75 ° -85 ° of aperture (0 ° is completely closed state, and 90 ° are full open position)), open
The second valve (11) is opened, makes engine section tail gas under the action of exhaust back pressure, by entering after drying device (12) drying
After adsorbent equipment (9), by control third valve (7) make this partial tail gas via absorption pipeline (10) and be desorbed pipeline (8) into
Enter burning in air inlet pipe (1) to engine (2), realizes cold-start phase by the recycling of absorption pollutant；
When delivery temperature is more than set temperature L, at this point, high-temperature tail gas can destroy sorbing material surface microporous structure, because
This, control unit (4) opens the first valve (5) by signal wire x, y, closes the second valve (11) and motor exhaust is made to pass through
Exhaust pipe (6) is discharged.
Claims (2)
1. a kind of vehicle-mounted adsorption/desorption device being desorbed using waste heat from tail gas, it is characterised in that including：Air inlet pipe air inlet pipe (1),
Engine (2), ternary catalyzing unit (3), the first valve (5), exhaust pipe (6), air inlet pipe (1) are connected in series with engine (2), and three
First catalyst converter (3), the first valve (5) are connected in series with engine (2) by exhaust pipe (6)；Adsorb pipeline (10), the second valve
(11), drying device (12), adsorbent equipment (9), third valve (7), absorption pipeline (10) are set under ternary catalyzing unit (3)
Trip, the first valve (5) upstream, adsorber (9) are set on absorption pipeline (10) and by adsorbing pipeline (10) and exhaust
Pipe (6) is connected in parallel, and adsorbent equipment (9) upstream is provided with the second valve (11), drying device (12), in adsorbent equipment (9)
Downstream is provided with third valve (7), desorption pipeline (8), and third valve (7) is connected by the way that pipeline (8) and air inlet pipe (1) is desorbed,
It is provided with sorbing material in the adsorbent equipment (9), the maximum effectively adsorption temp of the sorbing material is N, and sorbing material minimum is blown
It is M to stroke desorption temperature, and sorbing material heatproof ceiling temperature is L, N < M < L, third valve (7) control adsorbent equipment (9) discharge
Tail gas is by adsorbing pipeline (10) or desorption pipeline (8)；Control unit (4) receives engine rotational speed signal a, delivery temperature letter
Number b simultaneously passes through signal wire x, y, z and controls the first valve (5), the second valve (11) and third valve (7).
2. the vehicle-mounted absorber of heat accumulating type according to right 1, it is characterised in that：
When engine rotational speed signal a is zero, and exhaust temperature signal b is not more than set temperature N, control unit (4) passes through signal
Line x, y open the first valve (5), close the second valve (11) and motor exhaust is made to pass through exhaust pipe (6) discharge；
When the engine is started, control unit (4) meets engine rotational speed signal a, exhaust temperature signal b, when engine speed is believed
Number a is not zero, and when exhaust temperature signal b is not more than set temperature N, control unit (4) passes through signal wire x, y, z and closes the first valve
Door (5) opens the second valve (11) and motor exhaust is made to pass through third valve (7) by absorption pipeline (10) and exhaust pipe (6)
Discharge；
When delivery temperature is more than set temperature N but when no more than set temperature M, control unit (4) opens the by signal wire x, y
One valve (5) closes the second valve (11) and motor exhaust is made to pass through exhaust pipe (6) discharge；
When delivery temperature is more than set temperature M, but is not more than (containing being equal to) set temperature L, control unit (4) passes through signal wire
X, y, z controls the first valve (5) and aperture Q, aperture is kept to be 75 ° -85 °, open the second valve (11), makes engine section tail gas
After entering adsorbent equipment (9) after drying device (12) drying, make this partial tail gas via suction by controlling third valve (7)
Attached pipeline (10) and desorption pipeline (8) enter burning in air inlet pipe (1) to engine (2)；
When delivery temperature is more than set temperature L, control unit (4) opens the first valve (5) by signal wire x, y, closes the
Two valves (11) simultaneously make motor exhaust pass through exhaust pipe (6) discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810494728.2A CN108708780B (en) | 2018-05-22 | 2018-05-22 | Vehicle-mounted adsorption and desorption device for desorbing by using tail gas waste heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810494728.2A CN108708780B (en) | 2018-05-22 | 2018-05-22 | Vehicle-mounted adsorption and desorption device for desorbing by using tail gas waste heat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108708780A true CN108708780A (en) | 2018-10-26 |
| CN108708780B CN108708780B (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810494728.2A Active CN108708780B (en) | 2018-05-22 | 2018-05-22 | Vehicle-mounted adsorption and desorption device for desorbing by using tail gas waste heat |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0693847A (en) * | 1992-09-14 | 1994-04-05 | Nissan Motor Co Ltd | Exhaust emission control device for internal combustion engine |
| US5937637A (en) * | 1991-09-30 | 1999-08-17 | Hitachi, Ltd. | System for purifying exhaust gas for use in an automobile |
| CN105952516A (en) * | 2016-06-04 | 2016-09-21 | 北京工业大学 | Emission, adsorption and desorption system for cold start of automobile and control method |
| CN106368782A (en) * | 2016-09-16 | 2017-02-01 | 北京工业大学 | Series HC emission active adsorption and desorption device for cold start and control strategy |
| CN206027424U (en) * | 2016-09-12 | 2017-03-22 | 河北莫兰斯环境科技股份有限公司 | VOC (volatile organic compound) waste gas treatment system |
| CN107476857A (en) * | 2017-08-09 | 2017-12-15 | 北京工业大学 | A kind of vehicle-mounted absorber of heat accumulating type |
-
2018
- 2018-05-22 CN CN201810494728.2A patent/CN108708780B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5937637A (en) * | 1991-09-30 | 1999-08-17 | Hitachi, Ltd. | System for purifying exhaust gas for use in an automobile |
| JPH0693847A (en) * | 1992-09-14 | 1994-04-05 | Nissan Motor Co Ltd | Exhaust emission control device for internal combustion engine |
| CN105952516A (en) * | 2016-06-04 | 2016-09-21 | 北京工业大学 | Emission, adsorption and desorption system for cold start of automobile and control method |
| CN206027424U (en) * | 2016-09-12 | 2017-03-22 | 河北莫兰斯环境科技股份有限公司 | VOC (volatile organic compound) waste gas treatment system |
| CN106368782A (en) * | 2016-09-16 | 2017-02-01 | 北京工业大学 | Series HC emission active adsorption and desorption device for cold start and control strategy |
| CN107476857A (en) * | 2017-08-09 | 2017-12-15 | 北京工业大学 | A kind of vehicle-mounted absorber of heat accumulating type |
Non-Patent Citations (1)
| Title |
|---|
| 环境保护部科技标准司: "《中国环境标准全书》", 31 December 2008 * |
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