CN104265513B - Natural gas engine EGR mixing arrangement - Google Patents
Natural gas engine EGR mixing arrangement Download PDFInfo
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- CN104265513B CN104265513B CN201410486347.1A CN201410486347A CN104265513B CN 104265513 B CN104265513 B CN 104265513B CN 201410486347 A CN201410486347 A CN 201410486347A CN 104265513 B CN104265513 B CN 104265513B
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- Prior art keywords
- egr
- air inlet
- mixing arrangement
- natural gas
- flow spoiler
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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
- Y02T10/12—Improving ICE efficiencies
-
- 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
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- Exhaust-Gas Circulating Devices (AREA)
Abstract
The invention discloses a kind of natural gas engine EGR mixing arrangement.This natural gas engine EGR mixing arrangement includes: fuel gas mixer, and it is used for mixing air and combustion gas；EGR air inlet tube, its upstream extremity connects with described fuel gas mixer, and the sidewall of this EGR air inlet tube offers EGR air inlet；And EGR flow spoiler, it is tapered tubular, and the big opening end of this EGR flow spoiler is combi inlet port, and it connects with the downstream of described EGR air inlet tube；The inner peripheral surface of this EGR flow spoiler offers spiral type flow-disturbing groove.This natural gas engine EGR mixing arrangement realizes identical EGR mixed effect by the fuel gas mixer and EGR flow spoiler arranging Split type structure, and the technological level reducing EGR mixing arrangement requires and cost.It addition, utilize EGR flow spoiler spiral type flow-disturbing groove and tapered tubular structure different gas is mixed and accelerates, reduce flow resistance, it is to avoid consume more electromotor power consumption, advantageously reduce overall oil consumption.
Description
Technical field
The present invention relates to natural gas engine field, particularly to a kind of natural gas engine EGR mixing dress
Put.
Background technology
For the natural gas engine of equivalent burning, in order to promote emission level, need to increase waste gas
Recirculation (EGR), and EGR gas and combustion gas, air inlet mixing uniformity for engine combustion,
Performance has significant impact.In engine charge, if EGR skewness, electromotor can be caused
Catch fire, pinking, the series of problems such as cylinder uniformity is poor, emission exceeds standard, and then affect electromotor
Properly functioning and reliability.Therefore the EGR natural gas for equivalent burning that is uniformly distributed in air inlet is sent out
Motivation is highly important.
As it is shown in figure 1, the solution of Most current manufacturer is to use the EGR of EGR+ combustion gas+air
Blender 11 and fuel gas mixer 12 become one the EGR mixing arrangement of formula, at same EGR
EGR gas, natural gas and air are mixed by mixing arrangement.EGR gas is from EGR mixer
The EGR gas access 13 of 11 enters, and disengages from the aperture of EGR mixer annular distribution, with hole week
Enclose the fuel gas inlet 14 by fuel gas mixer 12 and combustion gas and air that air intake 15 respectively enters are carried out
Discharged by mixed gas outlet 16 after mixing, thus realize uniform EGR distribution.
The EGR mixing arrangement of current integral type is higher to the requirement of technological level, belongs to hot investment casting part,
Therefore cost is the most of a relatively high.And due to the structure of apertures multiple on blender, for the flowing of gas
Drag effects is the biggest, it is therefore desirable to consume more electromotor power consumption, is unfavorable for reducing overall oil consumption.
The information being disclosed in this background section is merely intended to increase the reason of the general background to the present invention
Solve, and be not construed as recognizing or imply in any form that this information structure is for this area general technology
Prior art well known to personnel.
Summary of the invention
It is an object of the invention to provide a kind of simple and reasonable natural gas engine EGR mixing dress
Putting, this natural gas engine EGR mixing arrangement is by arranging fuel gas mixer and the EGR of Split type structure
Flow spoiler realizes identical EGR mixed effect, reduce EGR mixing arrangement technological level require and
Cost.It addition, utilize EGR flow spoiler spiral type flow-disturbing groove and tapered tubular structure that different gas is entered
Row mixing and acceleration, reduce flow resistance, it is to avoid consume more electromotor power consumption, is conducive to fall
Low overall oil consumption.
For achieving the above object, the invention provides natural gas engine EGR mixing arrangement, including: combustion
Gas blender, it is used for mixing air and combustion gas；EGR air inlet tube, its upstream extremity mixes with described combustion gas
Clutch connects, and the sidewall of this EGR air inlet tube offers EGR air inlet；And EGR flow spoiler,
It is tapered tubular, and the big opening end of this EGR flow spoiler is combi inlet port, itself and described EGR air inlet
The downstream connection of adapter；The inner peripheral surface of this EGR flow spoiler offers spiral type flow-disturbing groove.
Preferably, in technique scheme, the big opening end of EGR flow spoiler have with under EGR air inlet tube
The end flanges that trip end connects.
Preferably, in technique scheme, end flanges is square.
Preferably, in technique scheme, the corner of square end flange offers bolt hole respectively.
Compared with prior art, there is advantages that this natural gas engine EGR mixes
Device realizes identical EGR mixing effect by the fuel gas mixer and EGR flow spoiler arranging Split type structure
Really, the technological level reducing EGR mixing arrangement requires and cost.It addition, utilize EGR flow spoiler
Different gas is mixed and accelerates by spiral type flow-disturbing groove and tapered tubular structure, reduces flowing
Resistance, it is to avoid consume more electromotor power consumption, advantageously reduces overall oil consumption.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of existing natural gas engine EGR mixing arrangement.
Fig. 2 is the use status architecture schematic diagram of the natural gas engine EGR mixing arrangement of the present invention.
Fig. 3 is the broken section structural representation of Fig. 2.
Fig. 4 is the three-dimensional knot of EGR flow spoiler first of the natural gas engine EGR mixing arrangement of the present invention
Structure schematic diagram.
Fig. 5 is the three-dimensional knot of EGR flow spoiler second of the natural gas engine EGR mixing arrangement of the present invention
Structure schematic diagram.
Fig. 6 is that the EGR flow spoiler sectional structure of the natural gas engine EGR mixing arrangement of the present invention shows
It is intended to.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the detailed description of the invention of the present invention is described in detail, it is to be understood that this
The protection domain of invention is not limited by detailed description of the invention.
Explicitly indicate that unless otherwise other, otherwise in entire disclosure and claims, term " bag
Include " or its conversion as " comprising " or " including " etc. will be understood to comprise stated element or
Ingredient, and do not get rid of other element or other ingredient.
As shown in Figures 2 and 3, mix according to the natural gas engine EGR of the specific embodiment of the invention
The concrete structure of device includes: fuel gas mixer 21 and EGR flow spoiler 22, and is laid in this combustion gas
EGR air inlet tube 23 between blender 21 and EGR flow spoiler 22, wherein, fuel gas mixer 21
Being Split type structure with EGR flow spoiler 22, EGR flow spoiler 22 is independent parts, is in combustion gas
The downstream of blender 21, is connected with fuel gas mixer 21 by EGR air inlet tube 23, EGR air inlet
Mouth is opened on EGR air inlet tube 23.Air and combustion gas initially enter fuel gas mixer 21 and mix,
Subsequently into EGR air inlet tube 23 and EGR gas jointly enter EGR flow spoiler 22 carry out rotating and
Accelerate, thus realize the mixing of various gas, and flow losses are reduced.This natural gas engine EGR
Mixing arrangement realizes identical EGR by the fuel gas mixer and EGR flow spoiler arranging Split type structure and mixes
Closing effect, the technological level reducing EGR mixing arrangement requires and cost.
Fuel gas mixer 21 is for mixing air and combustion gas, and it uses the combustion gas of original EGR mixing arrangement
The structure of blender part, air enters fuel gas mixer 21 through the air intake 24 of engine air inlet tube,
The aperture that combustion gas is distributed from fuel gas mixer 21 annular disengages, and carries out mixing laggard with the air around hole
Enter EGR air inlet tube 23.
The upstream extremity of EGR air inlet tube 23 connects with fuel gas mixer 21, downstream and EGR flow spoiler
22 connections, it is first that the sidewall of this EGR air inlet tube 23 offers EGR air inlet 25, air and combustion gas
It is introduced into after fuel gas mixer 21 mixes and enters EGR air inlet tube 23 and the EGR gas entered
The common EGR flow spoiler 22 that enters carries out rotating and accelerating, thus realizes the mixing of various gas.
As shown in Figures 4 to 6, EGR flow spoiler 22 is tapered tubular (structure of similar jet expansion),
Wherein, its big opening end is combi inlet port, and air, combustion gas and EGR gas are by this combi inlet port altogether
With entering EGR flow spoiler 22；This big opening end has the hold-carrying being connected with EGR air inlet tube 23 downstream
Blue 26, end flanges 26 is square, and corner offers bolt hole 27 respectively, is used for EGR by bolt
The big opening end of flow spoiler 22 is connected with EGR air inlet tube 23 downstream.The EGR flow-disturbing of tapered tubular
The inner peripheral surface of device 22 offers spiral type flow-disturbing groove 28, and air, combustion gas and EGR gas pass through this mixing
After gas import enters EGR flow spoiler 22 jointly, through spiral type flow-disturbing groove 28 and EGR flow spoiler 22
Tapered tubular structure produces and rotates and accelerate, and is mixed by different gas during rotating,
Realize preferable EGR mixed effect, reduce flow resistance, it is to avoid consume more electromotor power consumption,
Advantageously reduce overall oil consumption.
To sum up, this natural gas engine EGR mixing arrangement by arrange Split type structure fuel gas mixer and
EGR flow spoiler realizes identical EGR mixed effect, and the technological level reducing EGR mixing arrangement is wanted
Summation cost.It addition, utilize EGR flow spoiler spiral type flow-disturbing groove and tapered tubular structure to different gas
Body carries out mixing and accelerating, and reduces flow resistance, it is to avoid consume more electromotor power consumption, favorably
In reducing overall oil consumption.
The aforementioned description to the specific illustrative embodiment of the present invention illustrates that and the purpose of illustration.
These descriptions are not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned
Teaching, can much change and change.The purpose selected exemplary embodiment and describe exists
In explaining the certain principles of the present invention and actual application thereof, so that those skilled in the art can be real
Now and utilize the various different exemplary of the present invention and various different selection and change.
The scope of the present invention is intended to be limited by claims and equivalents thereof.
Claims (4)
1. a natural gas engine EGR mixing arrangement, it is characterised in that including:
Fuel gas mixer, it is used for mixing air and combustion gas；
EGR air inlet tube, its upstream extremity connects with described fuel gas mixer, the side of this EGR air inlet tube
Wall offers EGR air inlet；And
EGR flow spoiler, it is tapered tubular, and the big opening end of this EGR flow spoiler is combi inlet port, its
Connect with the downstream of described EGR air inlet tube；The inner peripheral surface of this EGR flow spoiler offers spiral type
Flow-disturbing groove.
Natural gas engine EGR mixing arrangement the most according to claim 1, it is characterised in that institute
The big opening end stating EGR flow spoiler has the end flanges being connected with EGR air inlet tube downstream.
Natural gas engine EGR mixing arrangement the most according to claim 2, it is characterised in that institute
It is square for stating end flanges.
Natural gas engine EGR mixing arrangement the most according to claim 3, it is characterised in that institute
The corner stating square end flange offers bolt hole respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410486347.1A CN104265513B (en) | 2014-09-22 | 2014-09-22 | Natural gas engine EGR mixing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410486347.1A CN104265513B (en) | 2014-09-22 | 2014-09-22 | Natural gas engine EGR mixing arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104265513A CN104265513A (en) | 2015-01-07 |
| CN104265513B true CN104265513B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410486347.1A Active CN104265513B (en) | 2014-09-22 | 2014-09-22 | Natural gas engine EGR mixing arrangement |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9611810B2 (en) * | 2015-02-03 | 2017-04-04 | Robert Bosch Gmbh | Gaseous fuel mixer with exhaust gas recirculation |
| CN105065143A (en) * | 2015-08-10 | 2015-11-18 | 广西玉柴机器股份有限公司 | Mixer |
| CN109322766A (en) * | 2017-07-31 | 2019-02-12 | 上海海能汽车电子有限公司 | A kind of natural gas engine gas and EGR mixer |
| CN109083771A (en) * | 2018-10-09 | 2018-12-25 | 广西玉柴机器股份有限公司 | EGR mixer system |
| CN109488490B (en) * | 2018-10-29 | 2020-10-09 | 安徽江淮汽车集团股份有限公司 | Mixing structure of engine exhaust gas recirculation system |
| CN110552823A (en) * | 2019-09-18 | 2019-12-10 | 广西玉柴机器股份有限公司 | Air inlet connecting pipe assembly and natural gas engine thereof |
| CN111794862B (en) * | 2020-07-15 | 2021-10-22 | 山东大学 | Deicing device and deicing method for air inlet lip of aircraft engine |
| CN115217688A (en) | 2021-04-15 | 2022-10-21 | 康明斯公司 | Air intake system for natural gas engine |
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| CN201318228Y (en) * | 2008-12-24 | 2009-09-30 | 东风汽车有限公司 | Exhaust gas recirculation mixer of automobile engine |
| JP2012041836A (en) * | 2010-08-17 | 2012-03-01 | Denso Corp | Egr mixer |
| CN202900451U (en) * | 2012-10-19 | 2013-04-24 | 东风汽车有限公司 | EGR mixer for EGR engine |
| CN103306858A (en) * | 2013-05-31 | 2013-09-18 | 潍柴动力股份有限公司 | EGR (exhaust gas recirculation) air mixing device and fuel engine with EGR system |
| CN204082388U (en) * | 2014-09-22 | 2015-01-07 | 广西玉柴机器股份有限公司 | Natural gas engine EGR mixing arrangement |
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2014
- 2014-09-22 CN CN201410486347.1A patent/CN104265513B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201318228Y (en) * | 2008-12-24 | 2009-09-30 | 东风汽车有限公司 | Exhaust gas recirculation mixer of automobile engine |
| JP2012041836A (en) * | 2010-08-17 | 2012-03-01 | Denso Corp | Egr mixer |
| CN202900451U (en) * | 2012-10-19 | 2013-04-24 | 东风汽车有限公司 | EGR mixer for EGR engine |
| CN103306858A (en) * | 2013-05-31 | 2013-09-18 | 潍柴动力股份有限公司 | EGR (exhaust gas recirculation) air mixing device and fuel engine with EGR system |
| CN204082388U (en) * | 2014-09-22 | 2015-01-07 | 广西玉柴机器股份有限公司 | Natural gas engine EGR mixing arrangement |
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| Publication number | Publication date |
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| CN104265513A (en) | 2015-01-07 |
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