CN206681861U - A kind of integrated gases blender - Google Patents
A kind of integrated gases blender Download PDFInfo
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- CN206681861U CN206681861U CN201720355609.XU CN201720355609U CN206681861U CN 206681861 U CN206681861 U CN 206681861U CN 201720355609 U CN201720355609 U CN 201720355609U CN 206681861 U CN206681861 U CN 206681861U
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- inner core
- egr exhaust
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- natural gas
- housing
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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
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Abstract
The utility model belongs to commercial car natural gas engine technical field, specifically a kind of integrated gases blender.The blender includes housing, inner core, natural airway, EGR exhaust conduit, natural gas inlet suction port and drain plug；Inner core is interference fitted with housing；The lowest part of housing is provided with mudhole；Drain plug is detachably arranged in mudhole；Two natural airways and two EGR exhaust conduits are arranged on inner core, and two natural airways are in 90 degree of distributions, and two EGR exhaust conduits are in 90 degree of distributions, and natural airway and EGR exhaust conduit are in 45 degree of cross-distributions；The lower end of housing is fixed with natural gas inlet suction port.The utility model is a kind of integrated gases blender for state's VI natural gas engines, the integrated mixer realizes being sufficiently mixed for fresh air, natural gas and three kinds of gases of EGR exhaust, and it has the characteristics that compact-sized flexible arrangement, gas flow area very much not throttle, total cross-section injection mixture homogeneity is high, in light weight, cost is low.
Description
Technical field
The utility model belongs to commercial car natural gas engine technical field, specifically a kind of integrated gases mixing
Device.
Background technology
The quality of natural gas engine combustion efficiency depends primarily on fresh air and the gaseous mixture of natural gas adsorption is uniform
Effect is spent, the mixture homogeneity of two kinds of gases is higher, and engine combustion is more stable, its dynamic property, economy and pollutant emission
Effect is better.Calculated through CAE and engine combustion experiment is groped, when mixture homogeneity reaches more than 0.9, engine combustion
Effect is good, meets fuel design requirement, is absolute uniform when mixture homogeneity reaches 1 in theory.
Traditional natural gas engine is used in air inlet pipe inner direct natural gas, and it is mixed to carry out flowing in air inlet pipeline
Close, without special hydrid component, mixture homogeneity is poor, causes engine combustion effect bad, it is impossible to reach more excellent power
Property, economy and discharge performance.To solve the above problems, needing to develop a kind of special gas mixer, realize that gaseous mixture is equal
Evenness reach 0.9 and more than, to obtain the optimal combustion efficiency of engine and optimal performance, therefore, gas mixer is day
The core capabilities part of right gas engine.
With air environmental pollution problem getting worse, the constantly upgrading of engine emission regulation is promoted to add tight, it is therefore desirable to
Advanced complicated combustion technology is realized.Natural gas engine state VI discharge phases use the EGR equivalent combustion technologies of main flow, will
A certain amount of engine exhaust is introduced into tracheal strips, participates in burning jointly with fresh air, natural gas.Introduce the work of EGR exhaust
With being the generation that reduces in-cylinder combustion temperature and suppress nitrogen oxides, to reduce engine heat load and obtain lower pollutant
Discharge, therefore, the EGR exhaust amount that fuel design requires to enter each cylinder are consistent, that is, require EGR exhaust and fresh air, day
Right gas carries out fully disturbance mixing, make three kinds of gases mixture homogeneity reach 0.9 and more than.
Patent No. CN200971815Y Chinese patent literature 1《A kind of literary mound at internal combustion engine gas inlet
In formula blender》Disclose a kind of venturi type gas mixer for internal combustion engine, the blender is by natural gas and fresh sky
Gas is mixed, and includes housing and ring, and the ring being arranged in housing seals together with housing surrounds a ring cavity, ring
It is inside mixed airway, the air admission hole of ring cavity is provided with housing, the venthole of ring cavity is provided with ring.
Patent No. CN102926896A Chinese patent literatures 2《A kind of gas mixer for internal combustion engine》Disclose one
Gas mixer of the kind for internal combustion engine, the blender is mixed EGR exhaust and fresh air, including blender gas transmission
Manage, the cavity in blender appendix is center cavity, and one end of blender appendix is fresh air input, and the other end is
Gaseous mixture output end；The outer cover of blender appendix is equipped with EGR mixer housing, and the both ends of EGR mixer housing are with mixing
The external shell sealing of clutch appendix；Cavity in EGR mixer housing is circumference cavity, the side wall of EGR mixer housing
One section of pipeline is outward extended with, the end of pipeline is provided with EGR gas entrance；And if the side wall of blender appendix is provided with
Dry EGR gas spray orifice, EGR gas spray orifice ensure that circumference cavity connects with center cavity.
Patent No. WO/2014/035587 PCT Patent document 3《NATURAL GAS AND INTAKE AIR MIXER
FOR INTERNAL COMBUSTION ENGINE》Disclose a kind of gas mixer for internal combustion engine, including mixing body
With the mixer element in the blender passage formed in mixing body.Mixer for natural gas in use is connected to air inlet in first end
Manifold, and take in gas in the second termination.The distal end of mixer element receives the manifold of the port extension from positioned at inlet manifold
Natural gas in passage.By the natural gas of the mixer element, in multiple the opening of the near-end formation of the exposure of mixer element
Mouthful place mixes with sucking air, and the mixture of air inlet and natural gas is from the second end of blender main body to the first of blender main body
End, then arrives inlet manifold again.
For blender disclosed in patent document 1, patent document 2 and patent document 3, the mixed of two kinds of gas can only be carried out
Close, mixture homogeneity is not high；In addition, described blender is without special blowdown pore structure；It is mixed described in patent document 1,2
Clutch is without gas injection tube.
To sum up, existing gas mixer can only realize the mixing of two kinds of gas, can not realize the mixing of three kinds of gas, can not
The gaseous mixture (more than 0.9) of high evenness is formed, while the design of existing Structure of Gas Mixer is simple defective.
The content of the invention
The utility model provides a kind of integrated form mixing for state VI natural gas engine EGR equivalents burning route
Device, the blender realize being sufficiently mixed for fresh air, natural gas and three kinds of gases of EGR exhaust, and it has compact-sized cloth
Put flexibly, gas flow area very much not throttles, total cross-section injection mixture homogeneity is high, ad hoc mudhole removes internal residual pollution
Thing, it is in light weight, cost is low the features such as, saved engine arrangement space, met 420 horsepowers and higher engine power need
Ask, obtain optimal combustion stability and highest efficiency of combustion, realize lower fuel consumption and pollutant emission, together
When reduce the weight and cost of engine, improve product competitiveness, the above-mentioned deficiency for solving existing gas mixer.
Technical solutions of the utility model are described with reference to the drawings as follows：
A kind of integrated gases blender, the blender include housing 1, natural 3, two EGR of airway of inner core 2, two
Waste gas duct 4, natural gas inlet suction port 5 and drain plug 6；Described inner core 2 be arranged in housing 1 and with the interference of housing 1
Coordinate；The lowest part of described housing 1 is provided with mudhole 12；Described drain plug 6 is detachably arranged in mudhole 12；Two
Natural airway 3 described in root and the EGR exhaust conduit 4 described in two are arranged on inner core 2, wherein two natural airways 3
In 90 degree of distributions, two EGR exhaust conduits 4 are in 90 degree of distributions, and described natural airway 3 and EGR exhaust conduit 4 are in 45
Spend cross-distribution；The lower end of described housing 1 is fixed with natural gas inlet suction port 5.
Described housing 1 is formed using casting aluminium material casting, its internal casting EGR exhaust circulation passage 7 and inner core mounting hole
8, and it is set side by side with the first annular annular groove 10 of groove 9 and second；The lower end of described housing 1 is provided with for installing day
The natural gas air admission hole 11 of right gas inlet suction port 5.
Described inner core 2 is made of stainless steel material, is provided with its is cylindrical and the annular of first annular groove 9 and second
Groove 10 corresponding the 3rd annular groove 13 and fourth annular groove 14；The endoporus of described inner core 2 presses gas inlet direction
It is divided into three sections i.e. first paragraph inner core 15, second segment inner core 16 and the 3rd section of inner core 17；Described first paragraph inner core 15 be diameter by
Small conical horn mouth is arrived greatly；Described second segment inner core 16 is the cylindrical duct of same diameter；The 3rd section of described inner core 17
For the conical horn mouth that diameter is ascending；The first gas spraying is provided with the endoporus circumferencial direction of described second segment inner core 16
The EGR exhaust spray orifice 19 of hole 18 and first；Described second segment inner core 16 is additionally provided with 4 equidistant natural airway mounting holes 20
With 4 equidistant EGR exhaust conduit mounting holes 21；Adjacent natural airway mounting hole 20 and EGR exhaust conduit mounting hole 21
In 45 degree.
Described natural airway 3 is made up of stainless steel material, is provided with multiple equidistant natural gas spray orifices 22 on its is cylindrical.
Described EGR exhaust conduit 4 is made up of stainless steel material, is provided with multiple equidistant EGR exhaust spray orifices on its is cylindrical
23。
Described the second natural gas spray orifice 22 and the axis of the second EGR exhaust spray orifice 23 mutually hangs down with the interior axially bored line of inner core 2
Directly.
The beneficial effects of the utility model are：The utility model realizes the uniform mixing of three kinds of gas；Assembly structure is tight
Gather, flexible arrangement, saved engine arrangement space；Gas flow area very much not throttles, and meets 420 horsepowers and higher starts
Acc power demand；Total cross-section injection mixture homogeneity is high, obtains optimal combustion stability and highest efficiency of combustion, realizes more
Low fuel consumption and pollutant emission；Ad hoc mudhole, internal residual pollutant is periodically removed, ensure that internal circulation gas is done
Only, the risk that part is corroded is reduced；Housing uses casting aluminium material, in light weight, cost is low.
Brief description of the drawings
Fig. 1 is integrated gases blender assembly sectional view described in the utility model；
Fig. 2 is integrated gases mixer case sectional view described in the utility model；
Fig. 3 is integrated gases blender inner core sectional view described in the utility model；
Fig. 4 is the natural airway sectional view of integrated gases blender described in the utility model；
Fig. 5 is integrated gases blender EGR exhaust conduit sectional view described in the utility model；
Fig. 6 is core assembly figure in integrated gases blender described in the utility model；
Fig. 7 is that the natural airway of integrated gases blender described in the utility model is relative with the installation of EGR exhaust conduit
The location drawing；Fig. 8 is integrated gases blender gas mixing Principle of Process figure described in the utility model；
Fig. 9 is integrated gases blender gas flow schematic diagram described in the utility model.
In figure：1st, housing；2nd, inner core；3rd, natural airway；4th, EGR exhaust conduit；5th, natural gas inlet suction port；6th, blowdown
Plug screw；7th, EGR exhaust circulation passage；8th, inner core mounting hole；9th, first annular groove；10th, the second annular groove；11st, natural gas
Air admission hole；12nd, mudhole；13rd, the 3rd annular groove；14th, fourth annular groove；15th, first paragraph inner core；16th, second segment inner core；
17th, the 3rd section of inner core；18th, the first natural gas spray orifice；19th, the first EGR exhaust spray orifice；20th, natural airway mounting hole；21、EGR
Waste gas duct mounting hole；22nd, the second natural gas spray orifice；23rd, the second EGR exhaust spray orifice；24th, interior core assembly；25th, the first installation mark
Know；26th, the second installation mark；27th, natural gas circulation cavity；28th, waste gas circulation cavity；29th, air inlet pipe；30th, engine.
Embodiment
Refering to Fig. 1, a kind of integrated mixer for being mixed fresh air, natural gas and EGR exhaust, including housing
1st, inner core 2, two natural 3, two EGR exhaust conduits 4 of airway, natural gas inlet suction port 5 and drain plug 6.
Refering to Fig. 2, described housing 1 is formed using casting aluminium material casting, its internal casting EGR exhaust circulation passage 7 and interior
Core mounting hole 8, Precision Machining inner core mounting hole 8, EGR exhaust air inlet end face and the both ends end face of housing 1, it is ensured that sealed reliable is not
Gas leakage.Second annular of first annular groove 9 and the EGR exhaust circulation that machining natural gas circulates on the basis of inner core 2 is recessed
Groove 10, it is ensured that the zone flow is sufficient.Natural gas air admission hole 11 is machined in housing bottom, for installing natural gas inlet suction port
5.In the bottom lowest part machining mudhole 12 of housing 1, for installing drain plug 6, carried out periodically by dismantling drain plug 6
Maintenance.
Refering to Fig. 3, inner core 2 is machined into using stainless steel material, right in the cylindrical machining and housing 1 of inner core 2
3rd annular groove 13 of the natural gas circulation answered and the fourth annular groove 14 of EGR exhaust circulation, it is ensured that the zone flow fills
Foot.The endoporus of inner core 2 using three stage structure design, by gas inlet direction divide, first paragraph inner core 15 be diameter by greatly to
Small conical horn mouth, second segment inner core 16 are the cylindrical duct of same diameter, and the 3rd section of inner core 17 is that diameter is ascending
Conical horn mouth, the structure design realize Venturi effect, strengthen gas mixing disturbance effect.In the second segment of inner core 2
Machining two-way air jetting holes on the endoporus circumferencial direction of inner core 16, are the first natural gas spray orifice 18 all the way, and another way is first
EGR exhaust spray orifice 19, uniform in a circumferential direction with certain quantity per road air jetting holes, nozzle hole number and pore size are set
Meter depends on engine air consumption demand.The machining two-way hole on the second segment endoporus circumferencial direction of inner core 2, is all the way day
Right airway mounting hole 20, another way is EGR exhaust conduit mounting hole 21, has 4 holes per road with 90 degree of distributions, each hole of two-way
With 45 degree of distributions.
Refering to Fig. 4, natural airway 3 is machined into by stainless steel material, is added on its is cylindrical with identical pitch of holes
Work goes out a number of second natural gas spray orifice 22, and the design of nozzle hole number and pore size is depending on engine air consumption need
Ask.
Refering to Fig. 5, EGR exhaust conduit 4 is machined into by stainless steel material, is added on its is cylindrical with identical pitch of holes
Work goes out a number of second EGR exhaust spray orifice 23, and the design of nozzle hole number and pore size is depending on engine air consumption need
Ask.
What the assemble sequence of the blender assembly was realized in：
Refering to Fig. 6, first two natural airways 3 and two EGR exhaust conduits 4 are installed on inner core 2, protected during installation
The spray orifice axis demonstrate,proved on natural airway 3 and EGR exhaust conduit 4 is vertical with axially bored line in inner core 2, installs latter two naturally
Airway 3 is in 45 degree with EGR exhaust conduit 4 in 90 degree of distributions, natural airway 3 in 90 degree of distributions, two EGR exhaust conduits 4
Cross-distribution, it is vertical with fresh air airflow direction to realize the injection direction of natural gas and EGR exhaust, ensure natural gas and
EGR exhaust is uniformly ejected on whole fresh air runner cross section, strengthens the disturbance mixed effect of three kinds of gas.Conduit fills
After matching somebody with somebody, enlarging is carried out to the both ends of each conduit by specific purpose tool and fixed, ensures conduit altering without axis direction on inner core 2
Rotation on dynamic and circumferencial direction.
It is assembled to refering to Fig. 7, then by the interior core assembly 24 of carrying pipe on housing 1, need to be by the first peace on inner core 2 during assembling
Dress mark 25 aligns with the second adjustment notch 26 on housing.Because inner core 2 and housing 1 are using being interference fitted, so both need
The quick assembling mode of alternating temperature control formula is used, i.e. inner core 2 cools down certain time at low temperature, and housing 1 heats at high temperature
Certain time, then both are quickly assembled to together by specific purpose tool, interference is realized after Part temperature returns to normal temperature
Assembling, it is ensured that inner core 2 installs firm and contact site gas-tight with housing 1.
Finally natural gas inlet suction port 5 and drain plug 6 are assembled on housing 1.
Operation principle of the present utility model is as follows：
Refering to Fig. 1, fresh air enters from mixer entrance, flows through whole blender inner core；Natural gas enters from natural gas
Gas port enters, and is mixed with the fresh air flowed through, forms the gaseous mixture of natural gas and fresh air；EGR exhaust enters from EGR exhaust
Gas port enters, and is mixed with the natural gas flowed through with the gaseous mixture of fresh air, forms natural gas, EGR exhaust and fresh air three
The homogeneous mixture of kind gas composition.
Refering to Fig. 1, Fig. 8, natural gas circulates cavity 27, then after Imported gas enters blender full of natural gas
It is divided into two-way to be sprayed, the inside core center position of natural gas spray orifice uniform from inner core sprays all the way, and another way is from two
The supravasal spray orifice of natural gas of right-angled intersection sprays to inner core circumferencial direction, and above-mentioned two-way natural gas has been uniformly filled in fresh sky
Gas flow area, form the gaseous mixture of natural gas and two kinds of gas of fresh air.
Refering to Fig. 1, Fig. 8, EGR exhaust circulates cavity 28, so after EGR exhaust import enters blender full of EGR exhaust
After be divided into two-way and sprayed, EGR exhaust spray orifice uniform from inner core sprays to inner core center position all the way, and another way is from two
The supravasal spray orifice of EGR exhaust of root right-angled intersection sprays to inner core circumferencial direction, and above-mentioned two-way EGR exhaust has been uniformly filled in day
Right gas and the flow area of fresh air gaseous mixture, form the mixing of three kinds of natural gas, EGR exhaust and fresh air gas
Gas.
Refering to Fig. 9, it is mixed that three kinds of natural gas, EGR exhaust and fresh air gases have carried out sufficient disturbance in blender
Close, form uniform gaseous mixture, being then transported to engine 30 by air inlet pipe 29 is burnt.
Claims (6)
1. a kind of integrated gases blender, it is characterised in that the blender includes housing (1), inner core (2), two natural gases
Conduit (3), two EGR exhaust conduits (4), natural gas inlet suction port (5) and drain plug (6)；Described inner core (2) is arranged on
It is interference fitted in housing (1) and with housing (1)；The lowest part of described housing (1) is provided with mudhole (12)；Described blowdown
Plug screw (6) is detachably arranged in mudhole (12)；Natural airway (3) described in two and the EGR exhaust described in two are led
Manage (4) to be arranged on inner core (2), wherein two natural airways (3) are in 90 degree in 90 degree of distributions, two EGR exhaust conduits (4)
Distribution, and described natural airway (3) and EGR exhaust conduit (4) they are in 45 degree of cross-distributions；Under described housing (1)
End is fixed with natural gas inlet suction port (5).
2. a kind of integrated gases blender according to claim 1, it is characterised in that described housing (1) is using casting
Aluminum casting forms, its internal casting EGR exhaust circulation passage (7) and inner core mounting hole (8), and is set side by side with the first ring
Connected in star (9) and the second annular groove (10)；The lower end of described housing (1) is provided with for installing natural gas inlet suction port (5)
Natural gas air admission hole (11).
3. a kind of integrated gases blender according to claim 1, it is characterised in that described inner core (2) is not using
Rust Steel material is made, and is provided with threeth ring corresponding with first annular groove (9) and the second annular groove (10) on its is cylindrical
Connected in star (13) and fourth annular groove (14)；The endoporus of described inner core (2) is divided into three sections i.e. first by gas inlet direction
Section inner core (15), second segment inner core (16) and the 3rd section of inner core (17)；Described first paragraph inner core (15) is that diameter is descending
Conical horn mouth；Described second segment inner core (16) is the cylindrical duct of same diameter；The 3rd section of described inner core (17) be
The ascending conical horn mouth of diameter；The first gas spraying is provided with the endoporus circumferencial direction of described second segment inner core (16)
Hole (18) and the first EGR exhaust spray orifice (19)；Described second segment inner core (16) is additionally provided with 4 equidistant natural airway peaces
Fill hole (20) and 4 equidistant EGR exhaust conduit mounting holes (21)；Adjacent natural airway mounting hole (20) and EGR exhaust
Conduit mounting hole (21) is in 45 degree.
A kind of 4. integrated gases blender according to claim 1, it is characterised in that described natural airway (3)
It is made up of stainless steel material, multiple the second equidistant natural gas spray orifices (22) is provided with its is cylindrical.
A kind of 5. integrated gases blender according to claim 4, it is characterised in that described EGR exhaust conduit (4)
It is made up of stainless steel material, multiple the second equidistant EGR exhaust spray orifices (23) is provided with its is cylindrical.
A kind of 6. integrated gases blender according to claim 5, it is characterised in that described natural gas spray orifice (22)
With the endoporus axis perpendicular of the axis and inner core (2) of EGR exhaust spray orifice (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720355609.XU CN206681861U (en) | 2017-04-06 | 2017-04-06 | A kind of integrated gases blender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720355609.XU CN206681861U (en) | 2017-04-06 | 2017-04-06 | A kind of integrated gases blender |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206681861U true CN206681861U (en) | 2017-11-28 |
Family
ID=60398496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720355609.XU Active CN206681861U (en) | 2017-04-06 | 2017-04-06 | A kind of integrated gases blender |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061060A (en) * | 2017-04-06 | 2017-08-18 | 中国第汽车股份有限公司 | A kind of integrated gases blender |
| CN108301941A (en) * | 2018-02-09 | 2018-07-20 | 中国第汽车股份有限公司 | A kind of gas engine air inlet mixing arrangement |
| CN109944719A (en) * | 2019-05-07 | 2019-06-28 | 一汽解放汽车有限公司 | A kind of binary channels EGR mixing arrangement |
| CN110714836A (en) * | 2019-09-12 | 2020-01-21 | 潍柴动力股份有限公司 | Natural gas engine system and control method of natural gas engine system |
| CN111322177A (en) * | 2020-04-01 | 2020-06-23 | 广西玉柴机器股份有限公司 | Gas engine mixer |
| WO2020133355A1 (en) * | 2018-12-29 | 2020-07-02 | 潍柴动力股份有限公司 | Gas mixer |
| RU2785726C1 (en) * | 2018-12-29 | 2022-12-12 | Вэйчай Пауэр Ко., Лтд. | Gas mixer |
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2017
- 2017-04-06 CN CN201720355609.XU patent/CN206681861U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061060A (en) * | 2017-04-06 | 2017-08-18 | 中国第汽车股份有限公司 | A kind of integrated gases blender |
| CN108301941A (en) * | 2018-02-09 | 2018-07-20 | 中国第汽车股份有限公司 | A kind of gas engine air inlet mixing arrangement |
| CN108301941B (en) * | 2018-02-09 | 2020-03-17 | 中国第一汽车股份有限公司 | Gas engine air inlet mixing device |
| WO2020133355A1 (en) * | 2018-12-29 | 2020-07-02 | 潍柴动力股份有限公司 | Gas mixer |
| RU2785726C1 (en) * | 2018-12-29 | 2022-12-12 | Вэйчай Пауэр Ко., Лтд. | Gas mixer |
| CN109944719A (en) * | 2019-05-07 | 2019-06-28 | 一汽解放汽车有限公司 | A kind of binary channels EGR mixing arrangement |
| CN110714836A (en) * | 2019-09-12 | 2020-01-21 | 潍柴动力股份有限公司 | Natural gas engine system and control method of natural gas engine system |
| CN110714836B (en) * | 2019-09-12 | 2020-11-20 | 潍柴动力股份有限公司 | Natural gas engine system and control method of natural gas engine system |
| CN111322177A (en) * | 2020-04-01 | 2020-06-23 | 广西玉柴机器股份有限公司 | Gas engine mixer |
| WO2021196671A1 (en) * | 2020-04-01 | 2021-10-07 | 广西玉柴机器股份有限公司 | Gas engine mixer |
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