CN104533675B - Combustion gas air-fuel ratio control device - Google Patents
Combustion gas air-fuel ratio control device Download PDFInfo
- Publication number
- CN104533675B CN104533675B CN201410644647.8A CN201410644647A CN104533675B CN 104533675 B CN104533675 B CN 104533675B CN 201410644647 A CN201410644647 A CN 201410644647A CN 104533675 B CN104533675 B CN 104533675B
- Authority
- CN
- China
- Prior art keywords
- air
- natural gas
- shower nozzle
- intake duct
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention discloses combustion gas air-fuel ratio control device, including natural gas shower nozzle, natural gas shower nozzle is positioned radially in the air intake duct of engine, and the inner chamber of air intake duct is divided into two symmetrical air flow channels by the natural gas shower nozzle；Air flow channel includes flow area gradually small high pressure runner area and flow area gradually big negative pressure flow path area, and high pressure runner area and negative pressure runner interval are formed with the minimum aditus laryngis of flow area, natural gas main is machined with natural gas shower nozzle, and two rows are symmetrily processed with the natural gas shower nozzle and tilt the jet apertures for pointing to corresponding negative pressure flow path area, each jet apertures are connected with natural gas main；Air in air intake duct is utilized flow through aditus laryngis through high pressure runner area after the size of pressure differential that is formed in negative pressure flow path area when accelerating, by the way that the number of gas quantity in jet apertures sucked, automatically adjusting and controlling for gaseous mixture optimal air-fuel ratio after air and combustion gas mixing is realized.
Description
Technical field
Sent out the present invention relates to air-fuel ratio control technology field, particularly diesel/natural gas dual-fuel engine or natural gas
A kind of air-fuel ratio control device that motivation is used, specifically a kind of combustion gas air-fuel ratio control device.
Background technology
It is to answer that middle high-power diesel/natural gas double fuel engine sprays air inlet at inlet manifold or cylinder head air intake duct
With more, more advanced intake method, but traditional air-fuel ratio control device system complex, service life and reliability have very big
Limitation, and mesohigh natural gas is only applicable to, do not applied to for the low pressure natural gas close to air inlet pipe air pressure, this causes very
Many low pressure natural gas sources are very inconvenient in actual use, or even can not effectively utilize.
The content of the invention
The technical problems to be solved by the invention be in view of the above-mentioned state of the art, and provide it is a kind of it is simple in construction,
Reliability height, service life length, air-fuel gas good mixing effect and the combustion gas sky used suitable for low pressure and mesohigh gas source
Control device is compared in combustion.
The present invention solve the technical scheme that is used of above-mentioned technical problem for：Combustion gas air-fuel ratio control device, including it is natural
Gas blowout head, natural gas shower nozzle is positioned radially in the air intake duct of engine, and the natural gas shower nozzle is by air intake duct
Chamber is divided into two symmetrical air flow channels；Air flow channel includes flow area gradually small high pressure runner area and flow area
Gradually big negative pressure flow path area, and high pressure runner area and negative pressure runner interval are formed with the minimum aditus laryngis of flow area, gas spraying
It is machined with head and the corresponding negative pressure flow path area of two rows inclination sensing is symmetrily processed with natural gas main, and the natural gas shower nozzle
Jet apertures, each jet apertures are connected with natural gas main；Air in air intake duct is utilized through high pressure runner area
The size of pressure differential formed when accelerating after aditus laryngis in negative pressure flow path area is flowed through, by sucking many of gas quantity in jet apertures
It is few, realize automatically adjusting and controlling for gaseous mixture optimal air-fuel ratio after air and combustion gas mixing.
For optimization above-mentioned technical proposal, the measure taken also includes：
Above-mentioned air intake duct is machined with assembling radial hole, and natural gas shower nozzle is fixedly mounted on air through assembling radial hole
In air inlet pipe.
Above-mentioned natural gas shower nozzle includes main rod body and the convex stage body being integrally connected with main rod body；Main rod body cross section
Be shaped as be gradient to big semiellipse body and by being gradient to the asymmetric shuttle that small sub warhead Object combination is formed greatly by small
The shape of shape, main rod body is extend into air intake duct, and convex stage body is engaged with the outer wall positioning of air intake duct.
The center of circle of the semiellipse body in any cross section is all fallen within the central axis of natural gas main, and positioning boss
The outer face of body is formed with the import of natural gas main.
Above-mentioned jet apertures are molded over sub warhead physically.
The axial line of any one two symmetrical jet apertures is homogeneous in two row's jet apertures of above-mentioned symmetrical machining
Meet on the central axis of natural gas main.
Angle between above-mentioned two symmetrical jet apertures is 20 degree -160 degree.
Angle between above-mentioned two symmetrical jet apertures is 30 degree -120 degree.
Two above-mentioned row's jet apertures are symmetrical with the middle separated time of sub warhead body.
The air intake duct of above-mentioned engine be engine air inlet manifold, or engine cylinder head air inlet
Road.
Compared with prior art, natural gas shower nozzle of the present invention is positioned radially in the air intake duct of engine, natural gas
The inner chamber of air intake duct is divided into two symmetrical air flow channels by shower nozzle；It is gradually small that air flow channel includes flow area
High pressure runner area and flow area gradually big negative pressure flow path area, and high pressure runner area and negative pressure runner interval are formed with flow area
It is machined with minimum aditus laryngis, natural gas shower nozzle on natural gas main, natural gas shower nozzle and is symmetrily processed with two rows inclination sensing phase
The jet apertures of negative pressure flow path area are answered, each jet apertures are connected with natural gas main；Air profit in air intake duct
The size of the pressure differential formed when accelerating after aditus laryngis is flowed through through high pressure runner area in negative pressure flow path area is small by sucking injection
The number of gas quantity in hole, realizes automatically adjusting and controlling for gaseous mixture optimal air-fuel ratio after air and combustion gas mixing.The present invention
Designed according to bernoulli principle, the throughput of natural gas is automatically controlled according to the flow of air, it is ensured that shape after air mixing
Into concentration be maintained in the range of optimal air-fuel ratio, with simple in construction, reliability is high, long lifespan the characteristics of, suitable for low pressure and
The combustion gas air-fuel ratio control of mesohigh gas source is used.
Brief description of the drawings
Fig. 1 is the cross section structure diagram of the present invention；
Fig. 2 is the cross section structure diagram of another angle of the invention；
Fig. 3 is the close-up schematic view of natural gas shower nozzle in Fig. 2.
Embodiment
Embodiments of the invention are described in further detail below in conjunction with accompanying drawing.
Fig. 1 to Fig. 3 is structural representation of the invention.
Reference therein is：High pressure runner area A, negative pressure flow path area B, aditus laryngis C, central axis L, axial line Q, in point
Line F, natural gas shower nozzle 1, natural gas main 1a, jet apertures 1b, main rod body 11, convex stage body 12, semiellipse body 13, son
Bullet body 14, air intake duct 2, H represent that mixed airflow represents that natural gas flow represents air flow to, K to, T.
Fig. 1 to Fig. 3 is structural representation of the invention, as illustrated, the combustion gas air-fuel ratio control device of the present invention, including
Natural gas shower nozzle 1, natural gas shower nozzle 1 is positioned radially in the air intake duct 2 of engine, and the natural gas shower nozzle 1 enters air
The inner chamber of tracheae 2 is divided into two symmetrical air flow channels；Air flow channel includes flow area gradually small high pressure runner area A
With flow area gradually big negative pressure flow path area B, and it is minimum that flow area is formed between high pressure runner area A and negative pressure flow path area B
Aditus laryngis C, while the present invention is machined with the natural gas main 1a for conveying natural gas, the gas spraying in natural gas shower nozzle 1
Two rows are symmetrily processed with first 1 and tilt the jet apertures 1b for pointing to corresponding negative pressure flow path area B, between the jet apertures 1b in often arranging is equal
Every setting, appropriate setting can be carried out according to the diameter of air intake duct 2 by often arranging jet apertures 1b quantity.Each injection is small
Hole 1b is connected with natural gas main 1a, and the air in air intake duct 2 is flowed through using bernoulli principle through high pressure runner area A
The size of pressure differential formed when accelerating after aditus laryngis C in negative pressure flow path area B, by sucking many of gas quantity in jet apertures 1b
It is few, realize automatically adjusting and controlling for gaseous mixture optimal air-fuel ratio after air and combustion gas mixing.In the prior art, traditional air-fuel ratio
Control device system is all more complicated, and its service life and reliability are greatly limited, and it is natural to be only applicable to mesohigh
Gas, and do not applied to then for the low pressure natural gas close to air inlet pipe air pressure, this causes many low pressure natural gas sources in reality
It is very inconvenient in use.Natural gas shower nozzle 1 is positioned in the air intake duct 2 of engine by the present invention, using bernoulli principle,
The air accelerated by flowing through after aditus laryngis C sucks natural gas in the negative pressure flow path area B negative pressure produced, it is ensured that natural gas and air
The gaseous mixture of certain air-fuel ratio is formed, the concentration of mixed mixed Daqu is maintained in the range of optimal air-fuel ratio.
In embodiment, from figure 1 it will be seen that air intake duct 2 is machined with assembling radial hole, natural gas shower nozzle 1 is through assembling
Radial hole is fixedly mounted in air intake duct 2.
In embodiment, natural gas shower nozzle 1 includes main rod body 11 and the convex stage body 12 being connected with the one of main rod body 11；It is main
Being shaped as of the cross section of the body of rod 11 is gradient to big semiellipse body 13 and by being gradient to 14 groups of small sub warhead body greatly by small
The shape of the asymmetric fusiformis formed is closed, main rod body 11 is extend into air intake duct 2, convex stage body 12 and air intake duct
2 outer wall positioning is engaged.The shape of the assembling radial hole of air intake duct 2 is adapted with the shape in the cross section of main rod body 11.
The center of circle of the semiellipse body 13 in embodiment from figures 2 and 3, it will be seen that any cross section all falls within natural gas
On house steward 1a central axis L, and the outer face of convex stage body 12 is formed with natural gas main 1a import.
The jet apertures 1b of the present invention is molded on sub warhead body 14.
In embodiment, any one two symmetrical jet apertures 1b axle center in two row's jet apertures 1b of symmetrical machining
Line Q is intersected on natural gas main 1a central axis L.
Angle between above-mentioned two symmetrical jet apertures 1b is 20 degree -160 degree.
Angle between two preferably symmetrical jet apertures 1b is at 30 degree-and 120 degree.
Two row's jet apertures 1b are symmetrical with the middle separated time F of sub warhead body 14.
The air intake duct 2 of engine be engine air inlet manifold, or engine cylinder head air intake duct.
What the present invention was realized in：The Cross section Design Cheng You little of natural gas shower nozzle 1 is gradient to greatly, then by being gradient to greatly
It is small, the shape of similar asymmetric fusiformis.Natural gas shower nozzle 1 is inserted into prismatic air inlet manifold or cylinder head air intake duct
In, the aditus laryngis C that flow area reduces is formed between inlet manifold or cylinder head air intake duct inner chamber and natural gas shower nozzle 1, works as air
When air-flow is by aditus laryngis C, air-flow accelerates, and according to bernoulli principle, when air-flow accelerates, causes local pressure to decline, and forms certain
Vacuum, such natural gas is drawn into, and certain density gaseous mixture, i.e., the mixing of certain air-fuel ratio are formed after being mixed with air
Gas.When engine accelerate or load increasing when, because of booster in middle high load capacity efficiency high, air mass flow increase it is more, flow through
During aditus laryngis C, local pressure, which declines, to be increased, that is, the vacuum formed is increased, and this causes the pressure differential between natural gas and air to widen,
Natural gas is set to spray into inlet manifold or cylinder head air intake duct by fusiformis natural gas shower nozzle 1 with higher flow velocity, so and air
The concentration formed after mixing is maintained in the range of optimal air-fuel ratio, and low pressure, middle pressure, high-pressure natural gas can all be moved smoothly through
Well mixed with air in shower nozzle, air inlet inlet manifold or cylinder head air intake duct.
Claims (1)
1. combustion gas air-fuel ratio control device, including natural gas shower nozzle (1), described natural gas shower nozzle (1) is positioned radially in starting
In the air intake duct (2) of machine, the air intake duct (2) is machined with the assembling radial hole that natural gas shower nozzle (1) is fixedly mounted, institute
The natural gas shower nozzle (1) stated includes main rod body (11) and the convex stage body (12) being integrally connected with main rod body (11)；Described
Convex stage body (12) is engaged with the outer wall positioning of air intake duct (2)；Described main rod body (11) extend into air inlet
Manage in (2), the inner chamber of air intake duct (2) is divided into two symmetrical air flow channels by natural gas shower nozzle (1)；Described
Air flow channel includes flow area gradually small high pressure runner area (A) and flow area gradually big negative pressure flow path area (B), and described
The minimum aditus laryngis (C) of flow area, described natural gas shower nozzle (1) are formed between high pressure runner area (A) and negative pressure flow path area (B)
Natural gas main (1a) is inside machined with, the outer face of described convex stage body (12) is formed with natural gas main (1a) import；
Two rows are symmetrily processed with the natural gas shower nozzle (1) and tilt the jet apertures (1b) for pointing to corresponding negative pressure flow path area (B), each spray
Aperture (1b) is penetrated with natural gas main (1a) to be connected；Air in described air intake duct (2) is utilized through high pressure runner
The size of the pressure differential formed when aditus laryngis (C) accelerates afterwards in negative pressure flow path area (B) is flowed through in area (A), by sucking jet apertures
The number of (1b) interior gas quantity, realizes automatically adjusting and controlling for gaseous mixture optimal air-fuel ratio after air and combustion gas mixing；It is special
Levying is：Being shaped as of described main rod body (11) cross section is gradient to big semiellipse body (13) and small by being gradient to greatly by small
Sub warhead body (14) combination formed asymmetric fusiformis shape；The circle of semiellipse body (13) described in any cross section
The heart is all fallen within natural gas main (1a) central axis (L), and described jet apertures (1b) are molded over sub warhead body (14)
On；The axial line (Q) of any one symmetrical two jet apertures (1b) is homogeneous in two row's jet apertures (1b) of symmetrical machining
Meet on natural gas main (1a) central axis (L)；Angle between symmetrical two jet apertures (1b) is 30 degree-
120 degree；Two row's jet apertures (1b) are symmetrical with the middle separated time (F) of sub warhead body (14)；The assembling of air intake duct (2)
The shape of radial hole is adapted with the shape in main rod body (11) cross section；The air intake duct (2) of described engine is to start
The air inlet manifold of machine or the cylinder head air intake duct of engine；Combustion gas air-fuel ratio control device is realized in：Natural gas
Shower nozzle (1) is inserted in prismatic air inlet manifold or cylinder head air intake duct, inlet manifold or cylinder head air intake duct inner chamber with
The aditus laryngis (C) that flow area reduces is formed between natural gas shower nozzle (1), when air draught is by aditus laryngis (C), air-flow accelerates,
According to bernoulli principle, when air-flow accelerates, cause local pressure to decline, form certain vacuum, such natural gas is drawn into, with
Certain density gaseous mixture, i.e., the gaseous mixture of certain air-fuel ratio are formed after air mixing；When engine accelerates or load is increased,
Because of booster in middle high load capacity efficiency high, air mass flow increase it is more, when flowing through aditus laryngis (C), local pressure decline increase, i.e.,
The vacuum of formation is increased, and this causes the pressure differential between natural gas and air to widen, and natural gas is passed through fusiformis natural gas shower nozzle
(1) inlet manifold or cylinder head air intake duct are sprayed into higher flow velocity, the concentration formed after so being mixed with air is maintained at most
In good air-fuel ratio range, and low pressure, middle pressure, high-pressure natural gas can all move smoothly through shower nozzle, air inlet inlet manifold or
Well mixed with air in cylinder head air intake duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410644647.8A CN104533675B (en) | 2014-11-14 | 2014-11-14 | Combustion gas air-fuel ratio control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410644647.8A CN104533675B (en) | 2014-11-14 | 2014-11-14 | Combustion gas air-fuel ratio control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104533675A CN104533675A (en) | 2015-04-22 |
| CN104533675B true CN104533675B (en) | 2017-11-07 |
Family
ID=52849267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410644647.8A Active CN104533675B (en) | 2014-11-14 | 2014-11-14 | Combustion gas air-fuel ratio control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104533675B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106993825B (en) * | 2017-05-04 | 2019-12-27 | 黄印坤 | Arab hookah |
| CN109826730B (en) * | 2019-03-25 | 2024-02-09 | 安徽华菱汽车有限公司 | Automobile and air inlet device thereof |
| CN111005824A (en) * | 2019-12-20 | 2020-04-14 | 哈尔滨工程大学 | Intensified flow-guiding type large-flow injection device of gas fuel engine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09268923A (en) * | 1996-04-01 | 1997-10-14 | Mitsubishi Motors Corp | Fuel supplying device of gas engine |
| JP4767458B2 (en) * | 2001-09-18 | 2011-09-07 | 本田技研工業株式会社 | Fuel supply device for internal combustion engine |
| CN202348479U (en) * | 2011-11-18 | 2012-07-25 | 广西玉柴机器股份有限公司 | Gas engine mixer |
| CN203335279U (en) * | 2013-06-19 | 2013-12-11 | 中国船舶重工集团公司第七一一研究所 | Natural gas mixer |
| CN204312209U (en) * | 2014-11-14 | 2015-05-06 | 宁波中策动力机电集团有限公司 | Combustion gas air-fuel ratio control device |
-
2014
- 2014-11-14 CN CN201410644647.8A patent/CN104533675B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104533675A (en) | 2015-04-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104533675B (en) | Combustion gas air-fuel ratio control device | |
| CN108266754A (en) | Fuel injector and the application method in gas-turbine combustion chamber | |
| US10247089B1 (en) | Condensate port of an integral intake manifold | |
| CN105121960A (en) | Injection system for a combustion chamber of a turbine engine, comprising an annular wall having a convergent inner cross-section | |
| US20190219005A1 (en) | Exhaust gas recirculator of an integral intake manifold | |
| KR20170121214A (en) | Injector with a dowel pin | |
| US20190219011A1 (en) | Fluid delivery port of an integral intake manifold | |
| CN103953465B (en) | A kind of natural gas engine gas rail assembly that is integrated with blender | |
| CN204312209U (en) | Combustion gas air-fuel ratio control device | |
| CN105587453B (en) | Fuelinjection nozzle | |
| CN203822490U (en) | Natural gas engine gas track assembly integrated with mixer | |
| CN109690047A (en) | Two-stroke internal combustion engine | |
| CN205277643U (en) | Supercharged engine intake duct | |
| CN109073224A (en) | For turbine spraying system, in inlet include the air inlet swirler of pneumatic deflector | |
| CN203962232U (en) | The air inlet duct part of improvement | |
| CN208186339U (en) | Venturi burner with decrease of noise functions | |
| CN108590899B (en) | Air inlet channel of split-flow guide type diesel engine | |
| CN206816412U (en) | A kind of gaseous fuel engine charge pipe-line system | |
| CN203130303U (en) | Modified air inlet duct piece | |
| CN202300634U (en) | Fuel-saving device of automobile | |
| CN209309982U (en) | A kind of upper air inlet burner | |
| CN204984584U (en) | Powerful accelerator of fuel -efficient engine | |
| CN212155018U (en) | Fuel injection nozzle | |
| US7066129B2 (en) | Intake manifold and runner apparatus | |
| CN207762901U (en) | Low nitrogen oxide burner mixing chamber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |