CN209053720U - Gas engine air/gas mixing arrangement - Google Patents
Gas engine air/gas mixing arrangement Download PDFInfo
- Publication number
- CN209053720U CN209053720U CN201821936626.3U CN201821936626U CN209053720U CN 209053720 U CN209053720 U CN 209053720U CN 201821936626 U CN201821936626 U CN 201821936626U CN 209053720 U CN209053720 U CN 209053720U
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- CN
- China
- Prior art keywords
- eddy flow
- flow part
- combustion gas
- branch pipe
- gas
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- 239000000567 combustion gas Substances 0.000 claims abstract description 69
- 239000007789 gas Substances 0.000 claims abstract description 61
- 238000002347 injection Methods 0.000 claims abstract description 30
- 239000007924 injection Substances 0.000 claims abstract description 30
- 239000002737 fuel gas Substances 0.000 claims abstract description 15
- 239000007921 spray Substances 0.000 claims abstract description 7
- 230000008676 import Effects 0.000 claims abstract description 4
- 238000005452 bending Methods 0.000 claims description 12
- 238000002485 combustion reaction Methods 0.000 abstract description 9
- 239000008246 gaseous mixture Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a kind of gas engine air/gas mixing arrangements, comprising: inlet manifold, the inlet manifold connect with cylinder head and form air intake duct before inlet valve；Fuel gas injection valve and combustion gas branch pipe, combustion gas branch pipe one end are connect with the fuel gas injection valve, and the other end protrudes into the inlet manifold；Eddy flow part is provided in the air intake duct, the eddy flow part is connect with the combustion gas branch pipe, and the high-pressure gas that the fuel gas injection valve sprays imports the eddy flow part through the combustion gas branch pipe and forms rotation mixed airflow.Eddy flow part is provided in the air intake duct of the utility model, by means of eddy flow part, injection energy in high-pressure gas course of injection can be such that combustion gas rotates, it drives air and gaseous mixture to rotate and keeps entering cylinder, improve the uniformity of air/gas mixing, rotation mixed airflow into cylinder can be such that upper, middle and lower layer gas mixes rapidly, to obtain better combustion efficiency in combustion stroke.
Description
Technical field
The utility model relates to engine gas mixing arrangement technical fields, more particularly to one kind to make on gas engine
The device that combustion gas and air are mixed.
Background technique
There are two types of the common fuel gas supply modes of gas engine: one is the single-point premixs that combustion gas is supplied before inlet manifold
Mode, another kind are the interior multi-point injection modes sprayed of air flue before valve.For multi-point injection mode, the every cylinder gas of engine
An injection valve is configured in front of the door, is started to spray after inlet valve opening and scavenging, is stopped injection before IC Intake Valve Closes, with list
Point premix mode is compared, and the performance indexes of engine is greatly improved.With advanced multi-point injection mode, replace
The single-point that generation implements premixes mode, it has also become the common recognition of industry.
But multi-point injection mode, since air intake duct distance is shorter before inlet valve, and the fuel gas injection time is short, combustion gas with
The mixing uniformity of air it is difficult to ensure that, the advantage of multi-point injection cannot be not fully exerted, and become and restrict multi-point injection mode
One of factor of popularization.
It as shown in Figure 9 and Figure 10, is the case study on implementation of common multi-point injection, combustion gas is by fuel gas injection valve 102 and combustion
Gas branch pipe 103 is ejected into the air intake duct 105 before inlet valve 101, is mixed with air, and then enters cylinder by inlet valve 101,
The phase relation of combustion gas and valve opening is referring to Figure 11, wherein T is the open phase of inlet valve, substantially stationary constant, and t is combustion
The injecting time of gas jet valve 102, t < T, t constantly change with the size of engine loading, especially in the small load of engine
When operating condition, t < < T.When fuel gas injection valve 102 is closed, what it is by the entrance cylinder of inlet valve 101 is pure air, in combustion gas
When injection valve 102 is opened, into cylinder be air/gas mixed gas, induction stroke terminates, and upper, middle and lower layer is in cylinder
The state of existing air, gaseous mixture, air, makes combustion efficiency be deteriorated, influences engine performance.
Chinese invention patent CN104454221B discloses a kind of inlet duct of engine, to the geometry of air intake duct
It is improved, and then enhances the air inlet vortex of air and ensure the charging efficiency of air inlet, but it is applied to diesel engine, air inlet rotation
The power in whirlpool is from air itself (rather than combustion gas), although certain effect can be used for reference and be obtained to gas engine, but still
The mixing requirement of gas/air cannot be fully met.
204646460 U of Chinese utility model patent CN discloses a kind of gas mixer for gas engine,
It is additionally arranged rotatable displaceable body in air intake duct, air-fuel ratio can change by rotation displacement main body, and then advantageous
It is operated normally in engine in the gaseous fuel of different calorific values.
At the end of induction stroke, upper, middle and lower layer presents empty the unresolved gas engine of above patent document in cylinder
The state of gas, gaseous mixture, air, the technical issues of making combustion efficiency be deteriorated, influence engine performance.
Utility model content
For the above-mentioned deficiency of the prior art, the utility model provides a kind of gas engine air/gas mixing arrangement,
To solve gas engine at the end of induction stroke, the state of air, gaseous mixture, air is presented in upper, middle and lower layer in cylinder, is made
The technical issues of combustion efficiency is deteriorated, and influences engine performance.
In order to solve the above technical problems, the following technical solution of the utility model:
A kind of gas engine air/gas mixing arrangement, comprising:
Inlet manifold, the inlet manifold connect with cylinder head and form air intake duct before inlet valve；
Fuel gas injection valve and combustion gas branch pipe, combustion gas branch pipe one end are connect with the fuel gas injection valve, and the other end protrudes into
In the inlet manifold；Eddy flow part is provided in the air intake duct, the eddy flow part is connect with the combustion gas branch pipe, the combustion gas
The high-pressure gas that injection valve sprays imports the eddy flow part through the combustion gas branch pipe and forms rotation mixed airflow.
Wherein, the eddy flow part is cylinder-shaped eddy flow part, is set in the air intake duct of the inlet manifold, the cylindrical shape
Eddy flow part is arranged in the same direction with the inlet manifold, and the tube wall of the cylindrical shape eddy flow part offers tangential admission hole, the combustion gas
The tangential admission hole of the cylinder-shaped eddy flow part is fixed in the end of branch tube opening.
Wherein, the eddy flow part is cylinder-shaped eddy flow part, is set in the air intake duct of the inlet manifold, the cylindrical shape
Eddy flow part is arranged in the same direction with the inlet manifold, and the tube wall of the cylindrical shape eddy flow part offers radial air inlet hole, the combustion gas
Branch pipe protrudes into the radial air inlet hole and is fixedly connected with the cylinder-shaped eddy flow part, the opening envelope of the combustion gas branch tube end
It closes, opens up multiple ventholes on the tube wall of the combustion gas branch pipe, the combustion gas sprayed from the venthole is along the cylinder-shaped rotation
Flow the tangential flow of part inner wall.
Wherein, the eddy flow part is cylinder-shaped eddy flow part, is set in the air intake duct of the inlet manifold, the cylindrical shape
Eddy flow part is arranged in the same direction with the inlet manifold, and the combustion gas branch pipe protrudes into the circle in the air intake duct inner bending and from axial
Tubular eddy flow part, the axle center of the cylinder-shaped eddy flow part, the combustion gas described in the axis deviation of the combustion gas branch pipe bending part
The closure of openings of branch tube end opens up multiple ventholes on the tube wall of the combustion gas branch pipe, the combustion sprayed from the venthole
Tangential flow of the gas along the cylinder-shaped eddy flow part inner wall.
Wherein, the eddy flow part is the circular ring shape eddy flow part of opening, is set in the air intake duct of the cylinder head, the circle
Annular eddy flow part and the inlet valve are coaxially disposed, and the combustion gas branch pipe is in air intake duct inner bending, the bending of the combustion gas branch pipe
Partially along the arranged tangential of the circular ring shape eddy flow part opening, the open end of the combustion gas branch pipe is fixed on the circular ring shape
The opening of eddy flow part.
After adopting the above technical scheme, the technical effect of the utility model is:
Eddy flow part is provided in the air intake duct of the utility model, the spray by means of eddy flow part, in high-pressure gas course of injection
Penetrating energy can be such that combustion gas rotates, and drive air and gaseous mixture to rotate and keep entering cylinder, it is mixed to improve air/gas
The uniformity of conjunction, the rotation mixed airflow into cylinder can be such that upper, middle and lower layer gas mixes rapidly, to obtain in combustion stroke
Better combustion efficiency.
Detailed description of the invention
Fig. 1 is the structure sectional view of the utility model gas engine air/gas mixing arrangement embodiment 1；
Fig. 2 is the cross-sectional view of A-A in Fig. 1；
Fig. 3 is the structure sectional view of the utility model gas engine air/gas mixing arrangement embodiment 2；
Fig. 4 is the cross-sectional view of B-B in Fig. 3；
Fig. 5 is the structure sectional view of the utility model gas engine air/gas mixing arrangement embodiment 3；
Fig. 6 is the cross-sectional view of C-C in Fig. 5；
Fig. 7 is the structure sectional view of the utility model gas engine air/gas mixing arrangement embodiment 4；
Fig. 8 is the cross-sectional view of D-D in Fig. 7；
Fig. 9 is a kind of structural schematic diagram of well-known technique；
Figure 10 is the cross-sectional view of G-G in Fig. 9；
Figure 11 is the relational graph of multipoint sequential injection gas injection amount and valve-open phase in well-known technique shown in Fig. 9；
In figure, 100- cylinder head, 101- inlet valve, 102- fuel gas injection valve, 103- combustion gas branch pipe, 103A- combustion gas branch pipe,
103B- combustion gas branch pipe, 103C- combustion gas branch pipe, 103D- combustion gas branch pipe, 104- inlet manifold, 105- air intake duct, 106A- eddy flow
Part, 106B- eddy flow part, 106C- eddy flow part, 106D- eddy flow part, 107- venthole, 108- venthole, 109- venthole, 200-
Rotate mixed airflow.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Embodiment 1
As Fig. 1 and Fig. 2 jointly shown in, a kind of gas engine air/gas mixing arrangement, inlet manifold 104 and cylinder
The connection of lid 100 simultaneously forms air intake duct 105 before inlet valve 101.
One end of combustion gas branch pipe 103A is connect with fuel gas injection valve 102, and the other end protrudes into inlet manifold 104, air inlet discrimination
Eddy flow part 106A is provided in the air intake duct 105 of pipe 104, eddy flow part 106A is connect with combustion gas branch pipe 103A, fuel gas injection valve 102
The high-pressure gas of ejection imports the eddy flow part 106A through combustion gas branch pipe 103A and forms rotation mixed airflow 200.
Eddy flow part 106A is cylinder-shaped eddy flow part, and the cylindrical shape eddy flow part and inlet manifold 104 are arranged in the same direction, cylinder-shaped
The tube wall of eddy flow part offers tangential admission hole, the end of combustion gas branch pipe 103A opening be fixed on cylinder-shaped eddy flow part it is tangential into
Stomata.
Embodiment 2
As Fig. 3 and Fig. 4 jointly shown in, a kind of gas engine air/gas mixing arrangement, structure and 1 base of embodiment
This is identical, and eddy flow part 106B is also cylinder-shaped eddy flow part, is also disposed in the air intake duct 105 of inlet manifold 104, cylinder-shaped eddy flow
Part 106B and inlet manifold 104 are arranged in the same direction, the difference is that, the tube wall of cylindrical part 106B offers radial air inlet hole,
Combustion gas branch pipe 103B protrudes into the radial air inlet hole and is fixedly connected with cylinder-shaped eddy flow part 106B, the end combustion gas branch pipe 103B
Closure of openings opens up multiple ventholes (107,108) on the tube wall of combustion gas branch pipe 103B, sprays from venthole (107,108)
Combustion gas along cylinder-shaped eddy flow part 106B inner wall tangential flow.
Embodiment 3
As Fig. 5 and Fig. 6 jointly shown in, a kind of gas engine air/gas mixing arrangement, structure and 1 base of embodiment
This is identical, and eddy flow part 106C is also cylinder-shaped eddy flow part, is also disposed in the air intake duct 105 of inlet manifold 104, cylinder-shaped eddy flow
Part 106C and inlet manifold 105 are arranged in the same direction, the difference is that, combustion gas branch pipe 103C is in 105 inner bending of air intake duct and from axis
To protruding into cylinder-shaped eddy flow part 106C, the axis of cylindrical shape eddy flow part 106C described in the axis deviation of combustion gas branch pipe 103C bending part
The heart, the closure of openings of the end combustion gas branch pipe 103C, opens up multiple ventholes 109, from outlet on the tube wall of combustion gas branch pipe 103C
Tangential flow of the combustion gas that hole 109 sprays along cylinder-shaped eddy flow part 106C inner wall.
Embodiment 4
As shown in Figure 7 and Figure 8, a kind of gas engine air/gas mixing arrangement, structure and 1 base of embodiment
This is identical, except that eddy flow part 106D is the circular ring shape eddy flow part of opening, is set to the air intake duct 105 of cylinder head 100
Interior, circular ring shape eddy flow part 106D and inlet valve 101 are coaxially disposed, and combustion gas branch pipe 103D is in 105 inner bending of air intake duct, combustion gas branch pipe
Along the arranged tangential of circular ring shape eddy flow part 106D opening, the open end of combustion gas branch pipe 103D is fixed on the bending part of 103D
The opening of circular ring shape eddy flow part 106D.
In the utility model, inlet manifold can justify can be square, and adaptability is good.
In the utility model, when eddy flow part is using the circular ring shape eddy flow part being open, since its inlet valve is coaxially disposed, enter
It does not need to turn round when rotating mixed airflow 200 when cylinder, thus mixed gas effect is more preferable.
The utility model is not limited to the above embodiment, all design, principle, structure and methods based on the utility model
Made various improvement, fall within the protection scope of the utility model.
Claims (5)
1. a kind of gas engine air/gas mixing arrangement, comprising:
Inlet manifold, the inlet manifold connect with cylinder head and form air intake duct before inlet valve；
Fuel gas injection valve and combustion gas branch pipe, combustion gas branch pipe one end are connect with the fuel gas injection valve, and the other end protrudes into described
In inlet manifold；It is characterized in that,
Eddy flow part is provided in the air intake duct, the eddy flow part is connect with the combustion gas branch pipe, and the fuel gas injection valve sprays
High-pressure gas import the eddy flow part through the combustion gas branch pipe and form rotation mixed airflow.
2. gas engine air/gas mixing arrangement as described in claim 1, which is characterized in that
The eddy flow part is cylinder-shaped eddy flow part, is set in the air intake duct of the inlet manifold, it is described cylindrical shape eddy flow part with
The inlet manifold is arranged in the same direction, and the tube wall of the cylindrical shape eddy flow part offers tangential admission hole, the combustion gas branch tube opening
End be fixed on the tangential admission hole of the cylinder-shaped eddy flow part.
3. gas engine air/gas mixing arrangement as described in claim 1, which is characterized in that
The eddy flow part is cylinder-shaped eddy flow part, is set in the air intake duct of the inlet manifold, it is described cylindrical shape eddy flow part with
The inlet manifold is arranged in the same direction, and the tube wall of the cylindrical shape eddy flow part offers radial air inlet hole, and the combustion gas branch pipe protrudes into
The radial air inlet hole is simultaneously fixedly connected, the closure of openings of the combustion gas branch tube end, described with the cylinder-shaped eddy flow part
Multiple ventholes are opened up on the tube wall of combustion gas branch pipe, the combustion gas sprayed from the venthole is along the cylinder-shaped eddy flow part inner wall
Tangential flow.
4. gas engine air/gas mixing arrangement as described in claim 1, which is characterized in that
The eddy flow part is cylinder-shaped eddy flow part, is set in the air intake duct of the inlet manifold, it is described cylindrical shape eddy flow part with
The inlet manifold is arranged in the same direction, and the combustion gas branch pipe protrudes into the cylinder-shaped eddy flow in the air intake duct inner bending and from axial
Part, the axle center of cylindrical shape eddy flow part described in the axis deviation of the combustion gas branch pipe bending part, the combustion gas branch tube end are opened
Mouth closing, opens up multiple ventholes on the tube wall of the combustion gas branch pipe, and the combustion gas sprayed from the venthole is along the cylinder
The tangential flow of shape eddy flow part inner wall.
5. gas engine air/gas mixing arrangement as described in claim 1, which is characterized in that
The eddy flow part is the circular ring shape eddy flow part of opening, is set in the air intake duct of the cylinder head, the circular ring shape eddy flow
Part and the inlet valve are coaxially disposed, and the combustion gas branch pipe is in air intake duct inner bending, and the bending part of the combustion gas branch pipe is along institute
The arranged tangential of circular ring shape eddy flow part opening is stated, the open end of the combustion gas branch pipe is fixed on the circular ring shape eddy flow part
Opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821936626.3U CN209053720U (en) | 2018-11-22 | 2018-11-22 | Gas engine air/gas mixing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821936626.3U CN209053720U (en) | 2018-11-22 | 2018-11-22 | Gas engine air/gas mixing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209053720U true CN209053720U (en) | 2019-07-02 |
Family
ID=67054039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821936626.3U Withdrawn - After Issue CN209053720U (en) | 2018-11-22 | 2018-11-22 | Gas engine air/gas mixing arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209053720U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236504A (en) * | 2018-11-22 | 2019-01-18 | 潍坊力创电子科技有限公司 | Gas engine air/gas mixing arrangement |
| CN117536714A (en) * | 2024-01-10 | 2024-02-09 | 潍坊力创电子科技有限公司 | Sleeve type air inlet device of internal combustion engine |
-
2018
- 2018-11-22 CN CN201821936626.3U patent/CN209053720U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236504A (en) * | 2018-11-22 | 2019-01-18 | 潍坊力创电子科技有限公司 | Gas engine air/gas mixing arrangement |
| CN109236504B (en) * | 2018-11-22 | 2023-08-29 | 潍坊力创电子科技有限公司 | Air/gas mixing device for gas engine |
| CN117536714A (en) * | 2024-01-10 | 2024-02-09 | 潍坊力创电子科技有限公司 | Sleeve type air inlet device of internal combustion engine |
| CN117536714B (en) * | 2024-01-10 | 2024-03-22 | 潍坊力创电子科技有限公司 | Sleeve type air inlet device of internal combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190702 Effective date of abandoning: 20230829 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190702 Effective date of abandoning: 20230829 |