CN204140233U - A kind of engine agitator - Google Patents
A kind of engine agitator Download PDFInfo
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- CN204140233U CN204140233U CN201420543171.4U CN201420543171U CN204140233U CN 204140233 U CN204140233 U CN 204140233U CN 201420543171 U CN201420543171 U CN 201420543171U CN 204140233 U CN204140233 U CN 204140233U
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- via layer
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- rock gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
A kind of engine agitator, comprise mixer body, mixer tube core, mixer body is the hollow structure of both ends open, comprise inlet end, mixed gas outlet end, inner chamber, the inwall of inlet end inserts with the outer wall of mixer tube core and coordinates, the outer wall of inlet end is connected with rock gas suction tude, this rock gas suction tude is communicated with mixed gas outlet end by inner chamber, mixer tube core is the hollow structure of one end open, its opening end is air intlet, and multiple through holes that the tube wall of this air intlet by mixer tube core is offered communicate with inner chamber.The design utilizes the larger momentum of air stream to break up rock gas a fluid stream, not only increases the mixture homogeneity of rock gas and air, and reduces flow resistance.
Description
Technical field
The utility model relates to a kind of automotive mixed conjunction device, particularly relates to a kind of motor car engine mixer, is specifically applicable to the mixture homogeneity of raising rock gas and air, reduces flow resistance.
Background technique
The severe contamination of energy crisis and air impels people to seek a kind of new energy with replacing fuel oil, the feature that it is clean for natural gas, because, reserves are large and become the substitute fuel received much concern.The main component of rock gas is methane, not only little than the C/Hratio of other hydrocarbon fuel, only produces the CO of small amount during burning
2, NOx, and combustion safety is better, and in addition, rock gas also has not narrow containing CO toxic component, explosion limit, octane value advantages of higher, and be also easy to dissipate in atmosphere once reveal, thus rock gas becomes important substitute fuel day by day.
In order to use rock gas better, the fast development of domestic natural gas motor complete machine development technique, but also there is short slab in critical system and parts, and especially key components and parts depends on import more.A lot of producer is all that a whole set of technology of Introduced From Abroad is to produce motor, with regard to air supply system, the design of mixer seldom has the characteristic of oneself, directly cause existing most of mixer can only meet the requirement of small-power, little bore engine, and for high-power, large bore engine is helpless, this seriously constrains the further optimization of engine performance.
The key technology of natural gas engine exploitation is exactly lean combustion, and this just requires that rationalization mixes, and makes mixed air and combustion gas more even, thus realizes Thorough combustion in cylinder, to export larger power to drive motor that is high-power, large-diameter.
Chinese patent: application publication number is CN102913342A, Shen Qing Publication day is that the patent of invention on February 6th, 2013 discloses a kind of engine agitator, comprises mixer body, tubulose spool and the mixer that is connected with mixer body is taken over and turbulent between mixer body and mixer are taken over.Although in this invention inflammable gas through turbulent enter again mixer adapter make inflammable gas in the process of circulation, produce the eddy current of axial-rotation and centripetal rotation, make the mixed effect of air and rock gas better, thus improve service behaviour and the Security of motor, but still there is following defect:
1, this mixer adopts combustion gas beam impacts and the mode diffusing into air stream forms combination gas, because the momentum of combustion gas is little, the air stream that momentum is larger cannot be broken up, can only change moving direction along with air stream travels forward, therefore easily form obvious stratification, mixed effect is not good;
2, in order to improve mixed effect, this invention have employed the method for installing turbulent at mixer outlet place, though this method effectively can improve the quality of combination gas, but not only can bring the problem of intake resistance increase, engine control low-response, and the length of mixer, the weight of increase mixer can be strengthened, be unfavorable for the compactness of motor, light-weight design.
Summary of the invention
The purpose of this utility model overcomes the problem that mixed effect is not good, engine control low-response, mixer length are longer existed in prior art, provides the engine agitator that a kind of mixed effect is more excellent, engine control response is fast, mixer length is shorter.
For realizing above object, the technical solution of the utility model is as follows:
A kind of engine agitator, comprise mixer body, mixer tube core, described mixer body is the hollow structure of both ends open, comprise inlet end, mixed gas outlet end, inner chamber, the inwall of described inlet end inserts with the outer wall of mixer tube core and coordinates, the outer wall of inlet end is connected with rock gas suction tude, this rock gas suction tude is communicated with mixed gas outlet end by inner chamber;
Described mixer tube core is the hollow structure of one end open, and its opening end is air intlet, and multiple through holes that the tube wall of this air intlet by mixer tube core is offered communicate with inner chamber.
Described inlet end inside offers the ring-type rock gas pressure stabilizing cavity communicated with rock gas suction tude along its border, on this ring-type rock gas pressure stabilizing cavity, one end of nearly mixed gas outlet end is provided with multiple natural gas injection pipes that the periphery along mixer tube core is evenly arranged, and entrance point, the outlet end of described natural gas injection pipe communicate with ring-type rock gas pressure stabilizing cavity, inner chamber respectively.
Described through hole is uniformly distributed along the border of tube wall, and forms 2N+1 the via layer be evenly arranged vertically, and in each via layer, the quantity of through hole is equal, and the through hole in adjacent via layer is interspersed vertically, wherein, and N >=1.
Described via layer comprises first via layer minimum with the axial distance of air intlet, the 2N+1 via layer maximum with the axial distance of air intlet, the distance of described outlet end, the first via layer be the first via layer, 2N+1 via layer distance 1/3 ?1/2.
Total number/(2N+1) of the number=through hole of described natural gas injection pipe, and between the adjacent two through hole of outlet end in same via layer.
The endoporus area of the endoporus area >=air intlet of total number * through hole of described through hole, the endoporus area of the endoporus area >=rock gas suction tude of total number * outlet end of natural gas injection pipe, the endoporus area of the maximum cross-section area >=2* air intlet of inner chamber.
Described mixed inlet end offers seal ring mounting groove.
The connecting plate that described tube wall is outside sheathed offers an attachment hole, and this attachment hole is fixedly connected with No. two attachment holes that inlet end is offered by clamping bolt.
Compared with prior art, the beneficial effects of the utility model are:
1, in a kind of engine agitator of the utility model, mixer tube core is the hollow structure of one end open, its opening end is air intlet, multiple through holes that the tube wall of this air intlet by mixer tube core is offered communicate with inner chamber, when motor runs, air is successively via air intlet, enter inner chamber after through hole to mix with rock gas, namely using air stream as power source, air stream is utilized to break up rock gas a fluid stream, rock gas is diffused in air stream relatively easily, this design can not only form homogeneous mixed gas, and without the need to adopting mixing auxiliary device, intake resistance is little, mixer length is shorter, engine control response is fast.Therefore, the utility model not only improves the quality of combination gas, and intake resistance is little, mixer length is shorter, engine control response is fast.
2, in a kind of engine agitator of the utility model, through hole is uniformly distributed along the border of tube wall, and form 2N+1 the via layer be evenly arranged vertically, and the through hole in adjacent via layer is interspersed vertically, namely through hole is even with radial direction vertically, interlaced arrangement, this arrangement makes the air stream through adjacent each through hole mutually collide on the one hand, enhance flow-disturbing effect, accelerate the phase interdiffusion of rock gas a fluid stream and air stream, thus strengthen the mixed effect of rock gas and air, on the other hand, reduce rock gas a fluid stream, the axial flow resistance of air stream, radial volume density can be reduced simultaneously, be conducive to gas diffusion.Therefore, the utility model not only facilitates the Homogeneous phase mixing of rock gas and air, and is conducive to gas diffusion.
3, a kind of engine agitator middle outlet of the utility model end, the distance of the first via layer is first via layer, the distance of 2N+1 via layer 1/3 ?1/2, on the one hand, the tubular design of natural gas injection pipe can by through hole with outlet end place plane for boundary is divided into, lower two-layer, after upper strata air stream and rock gas a fluid stream are mixed to form upper strata combination gas, upper strata combination gas forms uniform combination gas with the mutual shock-diffusion of lower air a fluid stream again and discharges via mixed gas outlet, the quality of combination gas effectively can be promoted by this hybrid mode, on the other hand, the position of outlet end is set in described scope and not only can ensures that upper strata air stream can be full of whole space, and the momentum of upper strata combination gas can be increased, strengthen the momentum transfer sneaked out again in journey, realize the Homogeneous phase mixing of air and rock gas.Therefore, the utility model puies forward the quality improving combination gas further.
4, the endoporus area of the endoporus area >=air intlet of total number * through hole of through hole in a kind of engine agitator of the utility model, the endoporus area of the endoporus area >=rock gas suction tude of total number * outlet end of natural gas injection pipe, the endoporus area of the maximum cross-section area >=2* air intlet of inner chamber, this is designed with to be beneficial to and reduces rock gas, the resistance of air in flow process, ensures the discharge value of rock gas, air.Therefore, the utility model reduces flow resistance, ensure that discharge value.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of mixer body in Fig. 1.
Fig. 3 is the structural representation of mixer tube core in Fig. 1.
In figure: mixer body 1, inlet end 11, mixed gas outlet end 12, rock gas suction tude 13, inner chamber 14, No. two attachment holes 15, mixer tube core 2, air intlet 21, tube wall 22, through hole 23, ring-type rock gas pressure stabilizing cavity 3, natural gas injection pipe 4, entrance point 41, outlet end 42, via layer 5, first via layer 51,2N+1 via layer 52, connecting plate 6, attachment hole 61, clamping bolt 7, a seal ring mounting groove 8.
Embodiment
Illustrate below in conjunction with accompanying drawing and with embodiment, the utility model to be described in further detail.
See figure 1 ?Fig. 3, a kind of engine agitator, comprise mixer body 1, mixer tube core 2, described mixer body 1 is the hollow structure of both ends open, comprise inlet end 11, mixed gas outlet end 12, inner chamber 14, the inwall of described inlet end 11 inserts with the outer wall of mixer tube core 2 and coordinates, and the outer wall of inlet end 11 is connected with rock gas suction tude 13, this rock gas suction tude 13 is communicated with mixed gas outlet end 12 by inner chamber 14;
Described mixer tube core 2 is the hollow structure of one end open, and its opening end is air intlet 21, and this air intlet 21 is communicated with inner chamber 14 by multiple through holes 23 that the tube wall 22 of mixer tube core 2 is offered.
Described inlet end 11 inside offers the ring-type rock gas pressure stabilizing cavity 3 communicated with rock gas suction tude 13 along its border, on this ring-type rock gas pressure stabilizing cavity 3, one end of nearly mixed gas outlet end 12 is provided with multiple natural gas injection pipes 4 that the periphery along mixer tube core 2 is evenly arranged, and entrance point 41, the outlet end 42 of described natural gas injection pipe 4 communicate with ring-type rock gas pressure stabilizing cavity 3, inner chamber 14 respectively.
Described through hole 23 is uniformly distributed along the border of tube wall 22, and forms 2N+1 the via layer 5 be evenly arranged vertically, and in each via layer 5, the quantity of through hole 23 is equal, and the through hole 23 in adjacent via layer 5 is interspersed vertically, wherein, and N >=1.
Described via layer 5 comprises first via layer 51 minimum with the axial distance of air intlet 21, the 2N+1 via layer 52 maximum with the axial distance of air intlet 21, the distance of described outlet end 42, first via layer 51 be the first via layer 51,2N+1 via layer 52 distance 1/3 ?1/2.
Total number/(2N+1) of the number=through hole 23 of described natural gas injection pipe 4, and between the adjacent two through hole 23 of outlet end 42 in same via layer 5.
The endoporus area of the endoporus area >=air intlet 21 of total number * through hole 23 of described through hole 23, the endoporus area of the endoporus area >=rock gas suction tude 13 of total number * outlet end 42 of natural gas injection pipe 4, the endoporus area of the maximum cross-section area >=2* air intlet 21 of inner chamber 14.
Described inlet end 11 offers seal ring mounting groove 8.
The connecting plate 6 that described tube wall 22 is outside sheathed offers an attachment hole 61, and this attachment hole 61 is fixedly connected with No. two attachment holes 15 that inlet end 11 is offered by clamping bolt 7.
Principle of the present utility model is described as follows:
The utility model is using air stream as power source, the larger momentum of air stream is utilized to break up rock gas a fluid stream, rely on momentum transfer to impel rock gas to spread as early as possible, form uniform combination gas with air, and be applied to in-cylinder combustion, and then improve the combustion efficiency of lean combustion engine.The design, without the need to any mixing auxiliary device, only just can meet the uniformity requirements of combination gas by self structure, and whole mixer structure is simply compact, be easy to layout, technology capability is good, cost is low, simultaneously, mixer total length is shorter, and signals collecting postpones little, and engine response is fast.
Mixing principle:
First, air is successively through the air intlet 21 of mixer tube core 2, the through hole 23 that tube wall 22 bottom is offered enters the inner chamber 14 of mixer body 1, rock gas is successively through rock gas suction tude 13, ring-type rock gas pressure stabilizing cavity 3, inner chamber 14 is entered after natural gas injection pipe 4, subsequently, upper strata combination gas is mixed to form with it after the rock gas entering inner chamber 14 is broken up by the air velocity of the through hole 23 from upper strata, then upper strata combination gas is flowed towards mixed gas outlet end 12, in flow process, upper strata combination gas is broken up by the air stream of the through hole 23 from lower floor, under mutual collision between gas, upper strata combination gas phase interdiffusion continuous with lower air a fluid stream, finally form homogeneous combination gas to flow out for engine combustion through mixed gas outlet end 12.
Outlet end 42:
For reducing air stream to the impact of natural gas flow through natural gas injection pipe 4, outlet end 42 is arranged between the adjacent two through hole 23 in same via layer 5 by the utility model, therefore, total number/(2N+1) of the number=through hole 23 of natural gas injection pipe 4.
Embodiment 1:
See figure 1 ?Fig. 3, a kind of engine agitator, comprise mixer body 1, mixer tube core 2, described mixer body 1 is the hollow structure of both ends open, comprise inlet end 11, mixed gas outlet end 12, inner chamber 14, the inwall of described inlet end 11 inserts with the outer wall of mixer tube core 2 and coordinates, the outer wall of inlet end 11 is connected with rock gas suction tude 13, inlet end 11 offers seal ring mounting groove 8, No. two attachment holes 15, and inlet end 11 inside offers the ring-type rock gas pressure stabilizing cavity 3 communicated with rock gas suction tude 13 along its border, on this ring-type rock gas pressure stabilizing cavity 3, one end of nearly mixed gas outlet end 12 is provided with multiple natural gas injection pipes 4 that the periphery along mixer tube core 2 is evenly arranged, the entrance point 41 of described natural gas injection pipe 4, outlet end 42 respectively with ring-type rock gas pressure stabilizing cavity 3, inner chamber 14 communicates, mixer tube core 2 is the hollow structure of one end open, the connecting plate 6 that its tube wall 22 is outside sheathed offers an attachment hole 61, this attachment hole 61 is fixedly connected with No. two attachment holes 15 by clamping bolt 7, the opening end of mixer tube core 2 is air intlet 21, this air intlet 21 is communicated with inner chamber 14 by multiple through holes 23 that tube wall 22 is offered, described through hole 23 is uniformly distributed along the border of tube wall 22, and form 2N+1 the via layer 5 be evenly arranged vertically, in each via layer 5, the quantity of through hole 23 is equal, and the through hole 23 in adjacent via layer 5 is interspersed vertically, described via layer 5 comprises first via layer 51 minimum with the axial distance of air intlet 21, with the 2N+1 via layer 52 that the axial distance of air intlet 21 is maximum, described outlet end 42, the distance of the first via layer 51 is the first via layer 51, the distance of 2N+1 via layer 52 1/3 ?1/2, total number/(2N+1) of the number=through hole 23 of described natural gas injection pipe 4, and outlet end 42 is in same via layer 5 between adjacent two through hole 23, the endoporus area of the endoporus area >=air intlet 21 of total number * through hole 23 of described through hole 23, the endoporus area of the endoporus area >=rock gas suction tude 13 of total number * outlet end 42 of natural gas injection pipe 4, the endoporus area of the maximum cross-section area >=2* air intlet 21 of inner chamber 14, wherein, N >=1.
The mixer overall length < 100mm of the present embodiment, adopts equivalent proportion coefficient as evaluation criterion, records the mixing efficiency of the present embodiment mixer more than 95%, intake resistance≤5kPa that self produces.
Claims (8)
1. an engine agitator, comprise mixer body (1), mixer tube core (2), the hollow structure that described mixer body (1) is both ends open, comprise inlet end (11), mixed gas outlet end (12), inner chamber (14), the inwall of described inlet end (11) inserts with the outer wall of mixer tube core (2) and coordinates, the outer wall of inlet end (11) is connected with rock gas suction tude (13), this rock gas suction tude (13) is communicated with mixed gas outlet end (12) by inner chamber (14), it is characterized in that:
The hollow structure that described mixer tube core (2) is one end open, its opening end is air intlet (21), and this air intlet (21) is communicated with inner chamber (14) by multiple through holes (23) that the tube wall (22) of mixer tube core (2) is offered.
2. a kind of engine agitator according to claim 1, it is characterized in that: described inlet end (11) inside offers the ring-type rock gas pressure stabilizing cavity (3) communicated with rock gas suction tude (13) along its border, one end of the upper nearly mixed gas outlet end (12) of this ring-type rock gas pressure stabilizing cavity (3) is provided with multiple natural gas injection pipes (4) that the periphery along mixer tube core (2) is evenly arranged, and entrance point (41), the outlet end (42) of described natural gas injection pipe (4) communicate with ring-type rock gas pressure stabilizing cavity (3), inner chamber (14) respectively.
3. a kind of engine agitator according to claim 1 and 2, it is characterized in that: described through hole (23) is uniformly distributed along the border of tube wall (22), and form 2N+1 the via layer (5) be evenly arranged vertically, in each via layer (5), the quantity of through hole (23) is equal, and the through hole (23) in adjacent via layer (5) is interspersed vertically, wherein, N >=1.
4. a kind of engine agitator according to claim 3, it is characterized in that: described via layer (5) comprises first via layer (51) minimum with the axial distance of air intlet (21), the 2N+1 via layer (52) maximum with the axial distance of air intlet (21), the distance of described outlet end (42), the first via layer (51) be the first via layer (51), 2N+1 via layer (52) distance 1/3 ?1/2.
5. a kind of engine agitator according to claim 3, it is characterized in that: total number/(2N+1) of the number=through hole (23) of described natural gas injection pipe (4), and outlet end (42) is arranged between the adjacent two through hole (23) of same via layer (5).
6. a kind of engine agitator according to claim 2, it is characterized in that: the endoporus area of the endoporus area >=air intlet (21) of total number * through hole (23) of described through hole (23), the endoporus area of the endoporus area >=rock gas suction tude (13) of total number * outlet end (42) of natural gas injection pipe (4), the endoporus area of the maximum cross-section area >=2* air intlet (21) of inner chamber (14).
7. a kind of engine agitator according to claim 1 and 2, is characterized in that: described inlet end (11) offers seal ring mounting groove (8).
8. a kind of engine agitator according to claim 1 and 2, it is characterized in that: the connecting plate (6) that described tube wall (22) is outside sheathed offers an attachment hole (61), and this attachment hole (61) is fixedly connected with No. two attachment holes (15) that inlet end (11) is offered by clamping bolt (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420543171.4U CN204140233U (en) | 2014-09-19 | 2014-09-19 | A kind of engine agitator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420543171.4U CN204140233U (en) | 2014-09-19 | 2014-09-19 | A kind of engine agitator |
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| CN204140233U true CN204140233U (en) | 2015-02-04 |
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| CN201420543171.4U Active CN204140233U (en) | 2014-09-19 | 2014-09-19 | A kind of engine agitator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314713A (en) * | 2014-09-19 | 2015-01-28 | 东风商用车有限公司 | Engine mixer |
| CN106837617A (en) * | 2017-03-03 | 2017-06-13 | 安徽江淮纳威司达柴油发动机有限公司 | A kind of high uniformity EGR mixing arrangements |
-
2014
- 2014-09-19 CN CN201420543171.4U patent/CN204140233U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314713A (en) * | 2014-09-19 | 2015-01-28 | 东风商用车有限公司 | Engine mixer |
| CN106837617A (en) * | 2017-03-03 | 2017-06-13 | 安徽江淮纳威司达柴油发动机有限公司 | A kind of high uniformity EGR mixing arrangements |
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