CN113047933A - HC injection system - Google Patents
HC injection system Download PDFInfo
- Publication number
- CN113047933A CN113047933A CN202110239515.7A CN202110239515A CN113047933A CN 113047933 A CN113047933 A CN 113047933A CN 202110239515 A CN202110239515 A CN 202110239515A CN 113047933 A CN113047933 A CN 113047933A
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- CN
- China
- Prior art keywords
- air inlet
- inlet pipe
- nozzle
- oil
- pipe
- Prior art date
- 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.)
- Pending
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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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
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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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
-
- 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
- F01N3/36—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
- 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
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)
- Exhaust Gas After Treatment (AREA)
Abstract
The embodiment of the application discloses an HC injection system for realize that oil-gas mixture is even. The embodiment of the application comprises the following steps: the device comprises an HC mixer, an HC nozzle, a catalytic oxidizer, a particle catcher, a first air inlet pipe and a second air inlet pipe; the first air inlet pipe and the second air inlet pipe are connected in a Z shape and used for retaining un-atomized fuel oil and enhancing oil-gas mixing; the HC nozzle is arranged at the joint of the first air inlet pipe and the second air inlet pipe and used for injecting fuel oil into an air inlet pipeline; the HC mixer is arranged in the second air inlet pipe and is used for mixing fuel oil with inlet air; the catalytic oxidizer is respectively connected with the second air inlet pipe and the particle catcher.
Description
Technical Field
The embodiment of the application relates to the technical field of vehicles, in particular to an HC injection system.
Background
With the continuous development of society, motor vehicles become as a necessary vehicle for many families or companies to go, the number of motor vehicles is increasing, the exhaust emission is increasing, and the problem caused by the exhaust emission seriously threatens the environmental safety. At present, two technical routes of 'EGR + DOC + DPF + SCR' and 'DOC + DPF + high-efficiency SCR' are mainly adopted for tail gas aftertreatment, wherein 'DOC + DPF' is a common regeneration mode, the combustion temperature of PM in DPF needs to reach more than 500 ℃, the temperature of an exhaust pipe is only 300 ℃, in order to raise the temperature of an inlet of the DPF to be more than 500 ℃, an HC injection system is added at the front end of the DOC in an active regeneration mode to ignite emissions, and the temperature of the inlet of the DPF reaches more than 500 ℃.
In the prior art, the hydrocarbon nozzle is vertically arranged above a pipeline port of the system, when gas enters from an air inlet port of the pipeline, the injection direction of fuel oil and the exhaust direction of the gas form a vertical direction, so that disturbance of the gas and the fuel oil is insufficient, and the oil-gas mixing is not uniform.
Disclosure of Invention
The embodiment of the application provides an HC injection system for realize the misce bene of oil gas.
The present application provides an HC injection system, comprising:
the device comprises an HC mixer, an HC nozzle, a catalytic oxidizer, a particle catcher, a first air inlet pipe and a second air inlet pipe;
the first air inlet pipe and the second air inlet pipe are connected in a Z shape and used for retaining un-atomized fuel oil and enhancing oil-gas mixing;
the HC nozzle is arranged at the joint of the first air inlet pipe and the second air inlet pipe and used for injecting fuel oil into an air inlet pipeline;
the HC mixer is arranged in the second air inlet pipe and is used for mixing fuel oil with inlet air;
the catalytic oxidizer is respectively connected with the second air inlet pipe and the particle catcher.
Optionally, the catalytic oxidizer is connected with the second air inlet pipe in a Z-shaped manner.
Optionally, the angle of rotation of the Z-shaped connection ranges from 90 degrees to 150 degrees.
Optionally, the inner wall surface of the joint of the first air inlet pipe and the second air inlet pipe is coated with a sealant.
Optionally, the outer surfaces of the first air inlet pipe and the second air inlet pipe are wrapped with a heat insulation layer.
Optionally, the system further comprises a pressure detector;
the pressure detector is arranged on the HC nozzle and used for detecting the oil pressure in the oil pipe.
Optionally, the system further comprises an injection control module;
the injection control module is arranged on the HC nozzle and used for determining the injection frequency of the HC nozzle according to the oil pressure in the oil pipe.
Optionally, the connection between the catalytic oxidizer and the particle catcher is on the same horizontal line.
Optionally, the catalytic oxidizer is connected with the particle catcher through an air pipe.
Optionally, the first air inlet pipe and the second air inlet pipe are connected by welding.
According to the technical scheme, the embodiment of the application has the following advantages:
the application is through providing an HC injection system who has the HC blender, the HC nozzle, catalytic oxidation ware, the particle trapper, first intake pipe and second intake pipe, the Z type of pipeline is connected and can is let the fuel spray out the back from the nozzle, expand whole trachea pipeline, the contact surface of fuel and gas has been increased, the fuel of having guaranteed to come out from the HC nozzle can be full of whole pipeline, and the gas of admitting air can strike with the wall in the corner, form partial whirl, strengthen the air current disturbance, make fuel and gaseous homogeneous mixing. Wherein, first intake pipe and second intake pipe are used for detaining the fuel that does not atomize to and further strengthen the air-fuel mixture.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of an HC injection system in an embodiment of the present application.
Detailed Description
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for explaining relative positional relationships between the respective members or components, and do not particularly limit specific mounting orientations of the respective members or components.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate. Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, the structures, the proportions, the sizes, and the like, which are illustrated in the accompanying drawings and described in the present application, are intended to be considered illustrative and not restrictive, and therefore, not limiting, since those skilled in the art will understand and read the present application, it is understood that any modifications of the structures, changes in the proportions, or adjustments in the sizes, which are not necessarily essential to the practice of the present application, are intended to be within the scope of the present disclosure without affecting the efficacy and attainment of the same.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, an HC injection system according to an embodiment of the present application includes: an HC mixer 1, an HC nozzle 2, a catalytic oxidizer 3, a particle trap 4, a first intake pipe 5, and a second intake pipe 6; the first air inlet pipe 5 and the second air inlet pipe 6 are connected in a Z shape, and the first air inlet pipe 5 and the second air inlet pipe 6 are used for retaining fuel oil which is not atomized and enhancing oil-gas mixing; the HC nozzle 2 is arranged at the joint of the first air inlet pipe 5 and the second air inlet pipe 6, and the HC nozzle 2 is used for injecting fuel into an air inlet pipeline; the HC mixer 1 is arranged in the second air inlet pipe 6, and the HC mixer 1 is used for mixing fuel oil with inlet air; the catalytic oxidizer 3 is connected to the second intake pipe 6 and the particle trap 4, respectively.
In the embodiment of the application, the HC injection system with the HC mixer 1, the HC nozzle 2, the catalytic oxidizer 3, the particle catcher 4, the first air inlet pipe 5 and the second air inlet pipe 6 is provided, the Z-shaped connection of the pipelines can enable fuel to be expanded to the whole air pipe pipeline after being injected from the nozzle, the contact surface of the fuel and gas is increased, the fact that the whole pipeline can be filled with the fuel coming out of the HC nozzle 2 is guaranteed, the gas entering the pipeline can collide with the wall surface at the corner, partial rotational flow is formed, airflow disturbance is strengthened, and the fuel and the gas are uniformly mixed. Wherein, the first intake pipe 5 and the second intake pipe 6 are used for detaining the fuel that does not atomize to and further strengthen the air-fuel mixture.
Optionally, the catalytic oxidizer 3 and the second air inlet pipe 6 are also connected in a Z-shape, and the Z-shaped connection between the first air inlet pipe 5 and the second air inlet pipe 6 means that the first air inlet pipe 5 is on a horizontal line, and the second air inlet pipe 6 and the first air inlet pipe 5 form a rotation angle, where the rotation angle may range from 90 degrees to 150 degrees, and similarly, the Z-shaped connection rotation angle between the catalytic oxidizer 3 and the second air inlet pipe 6 is also from 90 degrees to 150 degrees. Wherein, catalytic oxidation ware 3 is on the water flat line and is parallel with first intake pipe 6, and second intake pipe 6 forms the corner with catalytic oxidation ware 3. In order to ensure the air tightness in the pipeline, the inner wall surface of the connecting port of the first air inlet pipe 5 and the second air inlet pipe 6 is coated with a sealant.
In conventional injection systems, the intake line is not insulated. When the gas is mixed with the fuel oil through the pipeline, the oil gas enters the catalytic oxidizer 3 to carry out chemical reaction, and when heat is generated, the temperature of the wall surface of the pipeline is increased. Therefore, in the present application, the outer surfaces of the first air inlet pipe 5 and the second air inlet pipe 6 are wrapped by the heat insulation layer to achieve the heat insulation effect.
Further, the system can further comprise a pressure detector 7 and an injection control module 8, wherein the pressure detector 7 is arranged on the HC nozzle 2, and the pressure detector 7 is used for detecting the oil pressure inside the oil pipe; an injection control module 8 is also arranged on the HC nozzle 2, the injection control module 8 is used for determining the injection frequency of the HC nozzle 2 according to the oil pressure in the oil pipe, and the system can enable injected fuel and gas to be mixed better by adjusting the injection frequency of the HC nozzle 2.
In the original scheme, the pipeline is arranged vertically, and under the action of airflow, the whole surface contact of gas and fuel oil in the pipeline cannot be ensured, so that the oil and gas are difficult to be mixed uniformly. In this application, gaseous after entering into Z type pipeline through first intake pipe 5, with the fuel mixture that HC nozzle 2 sprays out, the oil gas after the mixture further carries out misce bene through HC blender 1, gets into catalytic oxidation ware 3 to carry out chemical reaction inside catalytic oxidation ware 3, produce the heat, realize the gas temperature rise after catalytic oxidation ware 3 reacts. It should be emphasized that, HC nozzle 2 here is set up in the corner of first intake pipe 5 with the handing-over of second intake pipe 6, and the direction of nozzle is parallel with the air current direction in the second intake pipe 6, fuel through HC nozzle 2 spun presents the umbelliform, after fuel is sprayed by HC nozzle 2, the fuel extends to whole second intake pipe 6 tube face, make the area of contact of fuel and gas increase, can mix with gas on whole tube face, simultaneously, gas can strike with the wall when the handing-over corner through second intake pipe 6 with first intake pipe 5, form partial whirl, strengthen the air current disturbance, the air-fuel mixture has been strengthened to a certain extent.
Alternatively, the catalytic oxidizer 3 and the particle catcher 4 are connected on the same horizontal line, and the catalytic oxidizer 3 and the particle catcher 4 are connected through an air pipe.
The first air inlet pipe 5 and the second air inlet pipe 6 are connected by welding.
It is intended that the foregoing description of the disclosed embodiments enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An HC injection system, comprising:
the device comprises an HC mixer, an HC nozzle, a catalytic oxidizer, a particle catcher, a first air inlet pipe and a second air inlet pipe;
the first air inlet pipe and the second air inlet pipe are connected in a Z shape and used for retaining un-atomized fuel oil and enhancing oil-gas mixing;
the HC nozzle is arranged at the joint of the first air inlet pipe and the second air inlet pipe and used for injecting fuel oil into an air inlet pipeline;
the HC mixer is arranged in the second air inlet pipe and is used for mixing fuel oil with inlet air;
the catalytic oxidizer is respectively connected with the second air inlet pipe and the particle catcher.
2. The system of claim 1, wherein the catalytic oxidizer is Z-shaped to the second intake pipe.
3. The system of claim 2, wherein the Z-connection has a range of angular rotation from 90 degrees to 150 degrees.
4. The system of claim 3, wherein a sealant is coated on an inner wall surface of a junction of the first air inlet conduit and the second air inlet conduit.
5. The system of claim 4, wherein the outer surfaces of the first and second inlet tubes are wrapped with a layer of insulation.
6. The system of claim 5, further comprising a pressure detector;
the pressure detector is arranged on the HC nozzle and used for detecting the oil pressure in the oil pipe.
7. The system of claim 6, further comprising an injection control module;
the injection control module is arranged on the HC nozzle and used for determining the injection frequency of the HC nozzle according to the oil pressure in the oil pipe.
8. The system of claim 7, wherein the catalytic oxidizer is connected to the particle trap on the same horizontal line.
9. The system of any one of claims 1 to 8, wherein the catalytic oxidizer is connected to the particle trap via a gas line.
10. The system of any one of claims 1 to 8, wherein the first air inlet pipe and the second air inlet pipe are connected by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110239515.7A CN113047933A (en) | 2021-03-04 | 2021-03-04 | HC injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110239515.7A CN113047933A (en) | 2021-03-04 | 2021-03-04 | HC injection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113047933A true CN113047933A (en) | 2021-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110239515.7A Pending CN113047933A (en) | 2021-03-04 | 2021-03-04 | HC injection system |
Country Status (1)
| Country | Link |
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| CN (1) | CN113047933A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102007277A (en) * | 2008-04-17 | 2011-04-06 | 丰田自动车株式会社 | Exhaust purifying system for internal combustion engine |
| CN102182533A (en) * | 2009-12-01 | 2011-09-14 | 通用汽车环球科技运作有限责任公司 | Air assisted injector, and injection system and exhaust treatment system incorporating the same |
| US20170074140A1 (en) * | 2015-09-14 | 2017-03-16 | GM Global Technology Operations LLC | Gas/liquid mixing device for exhaust aftertreatment |
| CN208057194U (en) * | 2018-02-23 | 2018-11-06 | 潍柴动力股份有限公司 | A kind of DPF initiative regenerations combustion-supporting system and diesel engine |
-
2021
- 2021-03-04 CN CN202110239515.7A patent/CN113047933A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102007277A (en) * | 2008-04-17 | 2011-04-06 | 丰田自动车株式会社 | Exhaust purifying system for internal combustion engine |
| CN102182533A (en) * | 2009-12-01 | 2011-09-14 | 通用汽车环球科技运作有限责任公司 | Air assisted injector, and injection system and exhaust treatment system incorporating the same |
| US20170074140A1 (en) * | 2015-09-14 | 2017-03-16 | GM Global Technology Operations LLC | Gas/liquid mixing device for exhaust aftertreatment |
| CN106523084A (en) * | 2015-09-14 | 2017-03-22 | 通用汽车环球科技运作有限责任公司 | Gas/liquid mixing device for exhaust aftertreatment |
| CN208057194U (en) * | 2018-02-23 | 2018-11-06 | 潍柴动力股份有限公司 | A kind of DPF initiative regenerations combustion-supporting system and diesel engine |
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Application publication date: 20210629 |