CN109404097A - Low temperature heating device for diesel engine exhaust purified treatment - Google Patents
Low temperature heating device for diesel engine exhaust purified treatment Download PDFInfo
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- CN109404097A CN109404097A CN201710704193.2A CN201710704193A CN109404097A CN 109404097 A CN109404097 A CN 109404097A CN 201710704193 A CN201710704193 A CN 201710704193A CN 109404097 A CN109404097 A CN 109404097A
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- low temperature
- heating device
- temperature heating
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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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
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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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
- F01N3/0253—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
- F01N3/0256—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases the fuel being ignited by electrical means
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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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/029—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles by adding non-fuel substances to exhaust
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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
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
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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
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
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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
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/30—Arrangements for supply of additional air
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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
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/36—Arrangements for supply of additional fuel
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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
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/38—Arrangements for igniting
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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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/14—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a fuel burner
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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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/20—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a flow director or deflector
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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
- F01N2270/00—Mixing air with exhaust gases
- F01N2270/04—Mixing air with exhaust gases for afterburning
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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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
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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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/08—Adding substances to exhaust gases with prior mixing of the substances with a gas, e.g. air
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
The present invention relates to a kind of low temperature heating devices for diesel engine exhaust purified treatment, and the low temperature heating device includes: tubular shell, and the tubular shell has arrival end and outlet end, and the arrival end is connected to the exhaust pipe of engine;The ignition part in the housing sidewall is arranged in nearly arrival end, and the ignition part center is provided with oil inlet;The ignition pot being connected to and in communication with the ignition part, the ignition pot have open end and closed end, and the closed end is close to the arrival end of the tubular shell, and the open end is close to the outlet end of the tubular shell;And air inlet pipe, the air inlet pipe pass through the side wall of the tubular shell and the ignition pot and are passed through inside the ignition pot.The air inlet pipe has the first gas outlet and the second gas outlet, and first gas outlet is passed directly into inside the ignition pot, and second gas outlet is connected to the ignition part, and the ignition part is between the first outlet gas and the closed end.
Description
Technical field
The present invention relates to the fields handled for automobile exhaust gas purifying, in particular to for diesel engine
Exhaust heats up to realize the regenerated field of grain catcher.
Background technique
With the execution of 5 discharge standard of Europe, diesel particulate filter (DPF) become one of diesel vehicle can not or
Scarce technology.In recent years, with the increase of vehicle guaranteeding organic quantity, vehicular emission is increasingly becoming Chinese big city air pollution
Main source.In the source of Beijing Ambient PM2.5, the share rate of automotive emission is up to 22%.Moreover, motor vehicle
The particulate matter of discharge mostlys come from diesel vehicle.With China's diesel car emission control regulations increasingly stringent in recent years
It puts into effect, the application of DPF will have a vast market foreground.
In diesel engine, the burning of diesel fuel is that nationality is realized by the self-ignition of different air/fuel mixtures.
If incomplete combustion, due to oxygen lack, and particle is generated.This particle mainly includes carbon (carbon black), sulfate and not
Completely burned hydrocarbon.To filter out this particle, diesel particulate trap has been disclosed in the prior art.
When using diesel particulate trap, it is typically due to filter loading rising, exhaust back pressure rises.Because starting mechanism
It makes quotient to be impermissible for more than the exhaust back pressure allowed, and does not expect to generate because of maintenance cost caused by filter emptying, so,
It is required for carrying out passive or active regeneration to filter.
In general, active diesel particulate trap system includes " electrically regenerative system " or " burner supports system
System ", can manually trigger regeneration, either control regenerated triggering by monitoring exhaust back pressure open loop or closed loop.
In the prior art, burner is typically designed to comprising the injector with small opening, so as in combustion chamber
Middle atomized fuel, wherein fuel is mixed with the necessary air that burns in a combustion chamber.The shortcomings that designing in this way is, sprays
The small atomization opening of mouth may be coking quickly because of combustion residue, and upsets the operation of burner.For example, working as burner
It will form combustion residue when closing.
In addition, the burner structure designed at present is more complicated, not only manufacturing process is troublesome, with high costs, but also is transporting
It is easy to appear problem during row, such as discussed in Chinese patent application the CN201310019585.7th.In addition, also
Some burners can only be regenerated in the case where vehicle parking or idling, and cannot be accelerated in vehicle or high-speed cruising
When regenerated, such as discuss in Chinese patent application the 200780021783.1st.
Therefore, there is still a need for one kind, and the exhaust from diesel engine can heat up to reach bavin in the art
Oil particles trap regeneration temperature and high-speed cruising can be kept in vehicle simultaneously or even still be able to reality under acceleration conditions
The existing regenerated burner of grain catcher or low temperature heating device.
Summary of the invention
In order to realize foregoing purpose, present inventor, which proposes, a kind of realizes fuel burning using simple structure
With the structure of exhaust-gas temperature rising.In this configuration, using the principle of eccentric air inlet, form the fresh air introduced in a combustion chamber
Vortex, to be sufficiently mixed with fuel gas, to improve efficiency of combustion.Later, the flame of generation of burning is introduced directly into particle
It in the mixing chamber of trap, is sufficiently mixed with the exhaust from exhaust pipe, so that the temperature of exhaust be increased, realizes granule capturing
The regeneration of device.
Specifically, in one aspect of the invention, it provides a kind of for the low of diesel engine exhaust purified treatment
Warm heating device, the low temperature heating device includes: tubular shell, and the tubular shell has arrival end and outlet end, the entrance
End is connected to the exhaust pipe of engine;The ignition part in the housing sidewall is set close to arrival end, in the ignition part
Centre is provided with oil inlet;The ignition pot being connected to and in communication with the ignition part, the ignition pot have open end and closed end, institute
Closed end is stated close to the arrival end of the tubular shell, the open end is close to the outlet end of the tubular shell;And air inlet pipe,
The air inlet pipe passes through the side wall of the tubular shell and the ignition pot and is passed through inside the ignition pot, which is characterized in that
The air inlet pipe has the first gas outlet and the second gas outlet, and first gas outlet is passed directly into inside the ignition pot, institute
It states the second gas outlet to be connected to the ignition part, the ignition part is between the first outlet gas and the closed end.Root
There can not only be in vehicle parking or to accumulation the micro particle catching of cigarette ash in the case where in idling according to low temperature heating device of the invention
Device, that is, DPF carries out real-time online regeneration, and can be in the state that vehicle is in high-speed cruising or in the state of accelerating
There is the i.e. DPF of particle trapper of cigarette ash to carry out real-time online regeneration accumulation.And, it is even more important that with conventional low temperature
Heating device or burner are compared, and are substantially shortened using the DPF on-line regeneration time that low temperature heating device according to the present invention carries out, very
To the half of the reproduction time of only conventional exhaust treatment system.
The low temperature heating device according to first aspect, first outlet mouth of pipe are inserted into the combustion chamber with eccentric manner
In.
The low temperature heating device according to first aspect is also set up between the igniting drum outer wall and the tubular shell
There is splitter, the annulus of the splitter is equidistantly cut to rectangle or trapezoidal shape notch and the aliform being bent outwardly
Portion.
The outlet extreme direction of the low temperature heating device according to first aspect, the aliform portion towards the tubular shell is curved
Song, and with the plane where the annulus of the splitter at 10-90 ° of angle, preferably 10 °, 15 °, 20 °, 25 °, 30 °,
35 °, 40 °, 45 °, 50 °, 55 °, 60 °, 65 °, 70 °, 75 °, 80 °, 85 ° of angles.
The low temperature heating device according to first aspect, before the splitter, on the inner wall of the tubular shell
It is additionally provided with the conflux cover of cone cylinder shape, the conflux cover extends towards the outlet extreme direction, reduced diameter.
The side wall of the low temperature heating device according to first aspect, the side wall of the conflux cover and the tubular shell at
10-50 ° of angle, preferably 10 °, 15 °, 20 °, 25 °, 30 °, 35 °, 40 °, 45 °, 50 ° of angles.
The shell of the low temperature heating device according to first aspect, the low temperature heating device and installation grain catcher connects
Logical, the shell includes the mixing chamber of the grain catcher and front positioned at rear portion, and the outlet end of the tubular shell is passed through institute
It states in mixing chamber;And the exhaust pipe of diesel engine is passed through in the mixing chamber with eccentric manner.
Compared with prior art, low temperature heating device according to the present invention can be in vehicle and accelerate or even run at high speed
Situation under stablize and light and regenerate the DPF of blocking uniformly, rather than as partially only stopping in the prior art in vehicle
Vehicle or in idling mode when, could stablize the dpf regeneration lighted and make to install below.It is not limited to theory, reason may be
Effectively shifted onto exhaust in the flame generated in this way, the dynamics that this flame is released is stronger, even if exhaust velocity compared with
It is fast or accelerate, it can not be blown out, stable light and regenerate to realize.
Detailed description of the invention
The present invention is described below with reference to attached drawing.It should be appreciated that attached drawing be intended merely to explain by way of example and
Illustrate the principle of the present invention, and has no intention to limit the invention to concrete scheme shown in attached drawing.In the accompanying drawings:
Fig. 1 is the cross section view of low temperature heating device according to an embodiment of the invention;
Fig. 2 is the schematic effect picture for showing the gas flow trace of low temperature heating device according to Fig. 1.
Specific embodiment
Low temperature heating device according to the present invention is described in detail below with reference to attached drawing.However, the ordinary skill people of this field
Member is it will be appreciated that each embodiment given below is used for the purpose of that those skilled in the art is made to better understood when this
Invention, without the purpose of any restrictions.The scope of the present invention is defined by the claims.
Fig. 1 shows burner according to an embodiment of the invention, i.e., for increasing the low temperature of engine exhaust temperature
Heating device.The low temperature heating device is used to be mounted on the end of automobile (especially diesel vehicle) exhaust pipe of engine, is mentioned by burning
Heating load realizes the regeneration of grain catcher to improve the temperature of engine exhaust.
In the embodiment depicted in fig. 1, low temperature heating device includes: tubular shell, and the tubular shell has arrival end
And outlet end, the arrival end are connected to the exhaust pipe of engine;Close to arrival end, the igniting in the housing sidewall is set
Portion is provided with oil inlet in the ignition part center;The ignition pot being connected to and in communication with the ignition part, the ignition pot have
Open end and closed end, the closed end is close to the arrival end of the tubular shell, and the open end is close to the tubular shell
Outlet end;And air inlet pipe, the air inlet pipe pass through the side wall of the tubular shell and the ignition pot and are passed through the igniting
Cylinder is internal.Particularly, the air inlet pipe has the first gas outlet and the second gas outlet, and first gas outlet is passed directly into described
Inside ignition pot, second gas outlet is connected to the ignition part, and the ignition part is located at the first outlet gas and described
Between closed end.
Igniter plug is mounted on combustion chamber by the mounting base of tubulose, close to the closed end of combustion chamber, for lighting burning
The mixture of fuel oil present in room and air.In one embodiment, fuel oil sprays into burning through the pipeline among igniter plug
Room, and lighted via igniter plug.In other embodiments, igniter plug is also possible to conventional electric plug, such as conventional use
In the electric plug of diesel engine.Certainly, igniter plug is also possible to refractory ceramics fire rod, such as by silicon nitride barred body and sets
It sets and is made in such as tungsten wire of heating wire wherein.
Ignition pot in a tubular form, including a closed end and an open end.Open end is towards the exhaust side of diesel engine
To the thermal current generated for exporting burning.Closed end is used to the thermal current of generation rebound to opening extreme direction, stops simultaneously
The thermal current of generation towards exhaust opposite direction flowing, to improve the thermal efficiency.In one embodiment, ignition pot is by resistant to high temperature
Metal is made, such as is made of stainless steel.
First outlet mouth of pipe is inserted into the ignition pot with eccentric manner.Eccentric manner refers to the center of the first outlet mouth of pipe
Line is not directed at the center line of ignition pot, but deviates the center certain distance of ignition pot, so that the first outlet mouth of pipe
Outlet is not directed at the center of ignition pot, and is in alignment with its partial sidewall.In this way, entering igniting by air inlet pipe in fresh air
When in cylinder, the side wall of ignition pot is impacted first, then along wall flow, swirling eddy is formed, to be conducive in ignition pot
It is sufficiently mixed with the fuel oil (or atomized fuel) entered from oil inlet, is conducive to burn.
Second outlet mouth of pipe of air inlet pipe is connected to the tubulose mounting base of igniter plug, thus by the fresh feeding igniter plug in part
In, it is mixed for fuel oil, initial ignition mixture is provided.Generally, the amount of the fresh air entered through the first outlet mouth of pipe
(for example, by volume) is 9:1 to 1:1, for example, 8:1,7 with the ratio between the amount of fresh air flowed into through the second outlet mouth of pipe:
1,6:1,5:1,4:1,3:1 or 2:1 or the arbitrary value between them.By changing the first outlet mouth of pipe and the second escape pipe
The amount for the fresh air that mouth flows into can flexibly change the indoor fuel-air ratio of burning, to realize different combustion positions.
For example, the ratio, for example, 8:1 can suitably be turned up, the reason is that at this time when diesel engine is in parking or idling conditions
The amount of exhaust is smaller, and the gas composition for accounting for combustion chamber is smaller, and the fresh air of relatively small amount is just able to maintain that fuel oil sufficiently fires
It burns.In contrast, when diesel engine is in accelerated condition or high-speed cruising, the amount of exhaust is relatively large, causes to account for burning
The ratio of indoor gas is higher, needs for more fresh airs to be sent into igniter plug at this time, to realize the full combustion of fuel oil.
In one embodiment, such ratio adjustment is by the way that the gear at the second outlet mouth of pipe is arranged in such a way that part is fixed
Piece (not shown) is realized.When air-flow is smaller, the opening of baffle is smaller, therefore only less amount of air stream enters igniter plug
In;When air-flow increases, the opening of baffle increases, and larger amount of air stream enters in igniter plug, to realize the first escape pipe
AIR Proportional in mouth and the second outlet mouth of pipe is adjusted.
Splitter is additionally provided between the igniting drum outer wall and the tubular shell, the annulus of splitter is equidistant
It is cut to rectangle or trapezoidal shape notch and the aliform portion being bent outwardly.The outlet extreme direction of aliform portion towards tubular shell is curved
Song, and with the plane where the annulus of splitter at 10-90 ° of angle.In a preferred embodiment, the angle be 10 °, 15 °,
20 °, 25 °, 30 °, 35 °, 40 °, 45 °, 50 °, 55 °, 60 °, 65 °, 70 °, 75 °, 80 ° or 85 °.More preferably implement at one
In scheme, which is 45 °.
It is not limited to any theory, the linear flow direction that engine comes is changed into direction of rotation by splitter, thus
Increase the contact area of air-flow and flame, guarantee gas thermally equivalent, reduces air-flow and directly hit showing for conflux cover generation sinuous flow
As.
In one embodiment, the conflux of cone cylinder shape is additionally provided with before splitter, on the inner wall of tubular shell
Cover, conflux cover extend towards the outlet extreme direction, reduced diameter.The side wall of conflux cover and the side wall of tubular shell are at 10-
50 ° of angles.In a preferred embodiment, which is 10 °, 15 °, 20 °, 25 °, 30 °, 35 °, 40 °, 45 ° or 50 °.Conflux cover will
The deflection air-flow conflux that splitter generates, abundant flame is close, reaches good heating effect.
In another embodiment, the exhaust from engine enters low-temp ignitor by admission line, through shunting
Piece, the discharge of conflux cover;The gas of air pump enters by air inlet pipe, igniter and ignition pot is flowed through, by burned flame at igniter gas
It takes out of at conflux cover, thus the gas that heating comes through engine, and the gas mixing with air pump, form high-temperature gas row
Out.Rotary pneumatic is first mixed to form by setting splitter and conflux cover, the thermal current for generation of burning and the exhaust from engine
Stream is sufficiently mixed to realize later by slightly convergence, is conducive to uniformly regenerate DPF, DPF is effectively prevent to exist
It ruptures, prolongs its service life because of uneven heating in regenerative process.In addition, heat also greatly improved in the uniform mixing
Efficiency reduces the fuel consumption in regenerative process, has further functioned as the effect of energy-saving and emission-reduction.
In another embodiment, low temperature heating device is connected to the shell of installation grain catcher, and shell includes after being located at
The grain catcher in portion and the mixing chamber of front, the outlet end of tubular shell are passed through in mixing chamber;And the row of diesel engine
Tracheae is passed through in the mixing chamber with eccentric manner.In this way, forming swirling eddy into the exhaust in mixing chamber, it is convenient for and burning
The thermal current of generation is sufficiently mixed, to realize the uniform regeneration of DPF.In addition, the advantage arranged in this way is low temperature heating
Device can cooperate at bending with exhaust pipe-shaped rather than be fitted a straight line, and be conducive to flexibly install, improve the adaptation of low temperature heating device
Performance.
Embodiment 1: burning of the low temperature heating device under idling
Low temperature heating device configures as shown in Figure 1, and details are not described herein.Low temperature heating device and engine exhaust pipeline are pacified
Dress.Engine is the diesel vehicle of Dong Feng Auto Corporation, and capacity is 2.8 liters.Comparative example is Chinese patent application the
Low temperature heating device disclosed in 200780021783.1.
Firstly, starting engine, carries out low temperature heating device according to formula in the state of idling, acceleration and high-speed cruising
It preheats, light, observe igniting reliability of the flame under idling, that is, see whether that stabilization is lighted, if occur being blown out by exhaust
The case where and record.
Next, (wherein being had accumulated a large amount of in the installation of low temperature heating device outlet end through used grain catcher, that is, DPF
Cigarette ash, but DPF is intact), and according to formula carry out regeneration tests.Burning is in observation DPF during the experiment
It is no uniform, and record multiple temperature.It is whether cracked that DPF is detected after experiment.
Embodiment 2: burning of the low temperature heating device under high speed and accelerated condition
Low temperature heating device configures as shown in Figure 1, details are not described herein.Low temperature heating device and engine exhaust pipeline are pacified
Dress.Engine is the diesel vehicle of Dong Feng Auto Corporation, and capacity is 2.8 liters.Comparative example is Chinese patent application the
Low temperature heating device disclosed in 200780021783.1.
Firstly, starting engine, carries out low temperature heating device according to formula in the state of idling, acceleration and high-speed cruising
It preheats, light, observe igniting reliability of the flame under idling, that is, see whether that stabilization is lighted, if occur being blown out by exhaust
The case where and record.
Next, (wherein being had accumulated a large amount of in the installation of low temperature heating device outlet end through used grain catcher, that is, DPF
Cigarette ash, but DPF is intact), and according to formula carry out regeneration tests.Burning is in observation DPF during the experiment
It is no uniform, and record multiple temperature.It is whether cracked that DPF is detected after experiment.
Finally, the DPF completed to regeneration weighs, and deashing rate is calculated based on the DPF weight before regeneration.To more
A deashing rate averages, and characterizes regeneration level with this.
The result of Examples 1 and 2 is shown in table 1 below.
Table 1: the result of embodiment 1 and embodiment 2
In embodiment 1 and embodiment 2, low temperature heating device according to the present invention is stable in embodiment 1 and embodiment 2
It lights, and accumulation can be made to have the DPF of cigarette ash to stablize regeneration, deashing rate reaches 90% or so, shows the effect for making dpf regeneration
It is very good, and do not occur the case where DPF is ruptured or cracked.
In addition, low temperature heating device according to the present invention is averaged the used time in the case where guaranteeing 90% or higher dpf regeneration
It can be achieved with regenerating within 10 minutes or so, and comparative example then needs 20 minutes or so, even up to 30 minutes.In this way, according to this hair
Fuel consumption used in bright system regeneration is greatly reduced, while also extending the service life of fire rod.
In contrast to this, in the comparative example, in the idling state, DPF be averaged deashing rate also only have 85% or so.And adding
In the state of speed and high-speed cruising, very small flame is observed, and the temperature of DPF arrival end is very low, only 300 DEG C of left sides
The temperature of dpf regeneration is not achieved in the right side at all, therefore deashing rate is almost nil, i.e. low-temperature-rise disclosed in comparative example in this state
Warm device cannot make dpf regeneration at all.
By above-mentioned experimental data it is found that either in the idling state, or in the state of accelerating or running at high speed, root
According to low temperature heating device of the invention due to the low temperature in comparative example in terms of lighting reliability or stability, DPF deashing
Heating device.
Claims (7)
1. a kind of low temperature heating device for diesel engine exhaust purified treatment, the low temperature heating device include:
Tubular shell, the tubular shell have arrival end and outlet end, and the arrival end is connected to the exhaust pipe of engine;
The ignition part in the housing sidewall is set close to arrival end, the ignition part center is provided with oil inlet;
The ignition pot being connected to and in communication with the ignition part, the ignition pot have open end and closed end, and the closed end is leaned on
The arrival end of the nearly tubular shell, the open end is close to the outlet end of the tubular shell;With
Air inlet pipe, the air inlet pipe pass through the side wall of the tubular shell and the ignition pot and are passed through inside the ignition pot,
It is characterized in that, the air inlet pipe has the first gas outlet and the second gas outlet, first gas outlet is passed directly into institute
It states inside ignition pot, second gas outlet is connected to the ignition part, and the ignition part is located at the first outlet gas and institute
It states between closed end.
2. low temperature heating device according to claim 1, wherein first outlet mouth of pipe is inserted into the combustion with eccentric manner
It burns in room.
3. low temperature heating device according to any one of claim 1 to 3, wherein in the igniting drum outer wall and the tubulose
Be additionally provided with splitter between shell, the annulus of the splitter be equidistantly cut to rectangle or trapezoidal shape notch and to
The aliform portion of outside sweep.
4. low temperature heating device according to claim 4, wherein outlet extreme direction of the aliform portion towards the tubular shell
Bending, and with the plane where the annulus of the splitter at 10-90 ° of angle, preferably 10 °, 15 °, 20 °, 25 °, 30 °,
35 °, 40 °, 45 °, 50 °, 55 °, 60 °, 65 °, 70 °, 75 °, 80 °, 85 ° of angles.
5. low temperature heating device according to any one of claim 1 to 3, wherein before the splitter, in the pipe
The conflux cover of cone cylinder shape is additionally provided on the inner wall of shape shell, the conflux cover extends towards the outlet extreme direction, and diameter is gradually
It reduces.
6. low temperature heating device according to claim 5, wherein the side wall of the side wall of the conflux cover and the tubular shell
At 10-50 ° of angle, preferably 10 °, 15 °, 20 °, 25 °, 30 °, 35 °, 40 °, 45 °, 50 ° of angles.
7. low temperature heating device according to claim 1, wherein the shell of the low-temperature-rise temperature device and installation grain catcher
Connection, the shell include the mixing chamber of the grain catcher and front positioned at rear portion, and the outlet end of the tubular shell is passed through
In the mixing chamber;And the exhaust pipe of diesel engine is passed through in the mixing chamber with eccentric manner.
Priority Applications (2)
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CN201710704193.2A CN109404097A (en) | 2017-08-17 | 2017-08-17 | Low temperature heating device for diesel engine exhaust purified treatment |
EP18187820.8A EP3444456B1 (en) | 2017-08-17 | 2018-08-07 | Low temperature heater for exhaust gas purification and treatment of diesel engine |
Applications Claiming Priority (1)
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CN201710704193.2A CN109404097A (en) | 2017-08-17 | 2017-08-17 | Low temperature heating device for diesel engine exhaust purified treatment |
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CN201710704193.2A Pending CN109404097A (en) | 2017-08-17 | 2017-08-17 | Low temperature heating device for diesel engine exhaust purified treatment |
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CN110894802A (en) * | 2019-11-06 | 2020-03-20 | 贵州煌缔科技股份有限公司 | Low-temperature combustor for exhaust purification treatment of diesel engine |
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EP3517747B1 (en) * | 2018-01-29 | 2020-08-12 | Guizhou Huangdi Technology Co., Ltd. | Low temperature heater for exhausted gas purification processing of diesel engine |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US20100077732A1 (en) * | 2005-06-22 | 2010-04-01 | Korea Institute Of Machinery And Materials | Burner for regeneration of diesel engine particulate filter and diesel engine particulate filter having the same |
KR100548451B1 (en) * | 2005-07-22 | 2006-01-31 | 한국기계연구원 | Inner flame burner for regeneration of diesel particulate filter |
US8257455B2 (en) * | 2007-07-30 | 2012-09-04 | Korea Institute Of Machinery & Materials | Plasma burner and diesel particulate filter trap |
FR2937082A1 (en) * | 2008-10-10 | 2010-04-16 | Jean Claude Fayard | BURNER FOR REGENERATING PARTICLE FILTERS OF INTERNAL COMBUSTION ENGINE AND CATALYTIC SYSTEM TEMPERATURE AND EXHAUST LINE INTEGRATING SUCH BURNER. |
KR100929611B1 (en) * | 2009-06-19 | 2009-12-03 | (주)템스 | A burner for diesel particulate filter regeneration |
JP5566134B2 (en) * | 2010-03-05 | 2014-08-06 | 日野自動車株式会社 | Exhaust gas temperature increase combustor |
US9027331B2 (en) * | 2013-02-27 | 2015-05-12 | Tenneco Automotive Operating Company Inc. | Exhaust aftertreatment burner with preheated combustion air |
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2017
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CN110894802A (en) * | 2019-11-06 | 2020-03-20 | 贵州煌缔科技股份有限公司 | Low-temperature combustor for exhaust purification treatment of diesel engine |
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Application publication date: 20190301 |