CN107061061A - A kind of integrated form of mixed admission intersects annular groove gaseous fuel jet mixing device - Google Patents
A kind of integrated form of mixed admission intersects annular groove gaseous fuel jet mixing device Download PDFInfo
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- CN107061061A CN107061061A CN201710504571.2A CN201710504571A CN107061061A CN 107061061 A CN107061061 A CN 107061061A CN 201710504571 A CN201710504571 A CN 201710504571A CN 107061061 A CN107061061 A CN 107061061A
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- annular groove
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- tracheae
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- electromagnet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/04—Gas-air mixing apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0251—Details of actuators therefor
- F02M21/0254—Electric actuators, e.g. solenoid or piezoelectric
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0257—Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow passages
- F02M21/026—Lift valves, i.e. stem operated valves
- F02M21/0269—Outwardly opening valves, e.g. poppet valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0278—Port fuel injectors for single or multipoint injection into the air intake system
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Intersect annular groove gaseous fuel jet mixing device it is an object of the invention to provide a kind of integrated form of mixed admission, by the mixed admission mode of the main direct air inlet of air drain in axial direction and circumferential tonifying Qi gas inlet hole in valve, the stability of air inlet is improved while realizing big flow.The combustion gas ejected through fuel gas injection valve enters the straight section of air pipe structure after the acceleration of convergent nozzle, now gas flow rate is higher, and tracheae straight section be provided with circumferentially, tracheae annular groove not of uniform size, tracheae annular groove is staggeredly arranged mutually in 90 °, and tracheae annular groove incline direction can also be set to towards engine charge direction according to actual needs.Meanwhile, air in inlet manifold volume it is miscellaneous the fuel gas high-speed flowing that sprays of tracheae annular groove, further increase gas-air mixed effect, improve the uniformity of mixing, while tracheae straight section end improves air inlet response close to engine intake valve.
Description
Technical field
The present invention relates to a kind of fuel injection mixing arrangement, specifically gaseous fuel jet mixing device.
Background technology
Combustion of natural gas is cleaned and in China's rich reserves, becomes the fuel of most possible diesel oil substitute.Inside
In combustion engine industry, energy-saving and emission-reduction are being protected as the inexorable trend of internal combustion engine development using natural gas as the internal combustion engine of main fuel
On the premise of demonstrate,proving dynamic property, exhaust emission situation can be greatly reduced, using natural gas for fuel internal combustion engine in recent years already
As the study hotspot in industry.As the fuel supply system of natural gas engine, the performance of fuel gas injection valve is directly determined
The characteristic of natural gas engine.The big flow gas injection that Development response speed is fast, stable gas pressure, control accuracy are high, reliability is high
Valve is penetrated, is the trend of current natural gas engine gas injection valve development.
However, because natural gas is fuel gas, more volume of air being tied up in air inlet, causes charging efficiency to drop
It is low.Importantly, because the density of combustion gas and air is inconsistent, having than more serious charge stratification phenomenon, making during air inlet
Mixed effect into combustion gas and air is not good, influences follow-up burning quality, pollutes thing discharge exceeded.
Therefore the overall performance of gaseous fuel jet mixing device is the key in gas engine.Many researchers carry
Go out to know clearly a series of gas handling system designs, although these system architectures provide a kind of preferable method for fuel gas supply,
But simultaneously there is also some shortcomings, such as air inlet mixing uniformity and response still have many weak points.
The content of the invention
It is an object of the invention to provide stability and the response that air inlet is taken into account while can improving air inlet mixed effect
Property a kind of mixed admission integrated form intersect annular groove gaseous fuel jet mixing device.
The object of the present invention is achieved like this：
A kind of integrated form of mixed admission of the present invention intersects annular groove gaseous fuel jet mixing device, it is characterized in that：Including
Fuel gas injection valve portion, intake elbow, tracheae；
Fuel gas injection valve portion includes valve body, valve seat, electromagnet, valve element assembly, and electromagnet is arranged on valve body, valve body
On valve seat, wound around coil in valve space, electromagnet, valve element combination position are formed between electromagnet, valve body and valve seat
In in valve space and being arranged on below electromagnet, described valve element assembly includes armature, spring base, bottom plate, valve element, guiding
Pin, armature, bottom plate, valve element arrange that spring base is located at outside armature simultaneously while being linked together by fastening bolt from top to bottom
Formed between armature and annular groove is set inside annular groove, electromagnet, the two ends of master reset spring are arranged in electromagnet
In the annular groove of annular groove and spring base, guide finger is installed in armature center, and guide finger is stretched in electromagnet, set in electromagnet
Auxiliary back-moving spring is put, the two ends of auxiliary back-moving spring are contacted respectively sets pressure compensation opening, bottom in electromagnet and guide finger, guide finger
Relief groove is set on plate, and valve element is to set center pressure stabilizing cavity on the valve seat below hollow structure, valve element, and the outer end of valve seat is set
End pressure stabilizing cavity is put, pressure compensation opening, relief groove, the hollow space of valve element and center pressure stabilizing cavity communicate and constitute inside
Set on space, valve element and outlet annulus is set on seal band, seal band formation ring cavity, valve seat, outlet annulus is located at ring cavity
Gas outlet is set below lower section, outlet annulus, and valve element upper surface opens up and is provided with circumferential tonifying Qi hole on axially main air drain, fin, and
Diversion angle of cone is set at tonifying Qi hole；
The head end of intake elbow is arranged on below gas outlet, and the end connection tracheae of intake elbow, tracheae is located at air inlet discrimination
Tracheae annular groove is set on Guan Li, tracheae, and the head end and the end section axis of end two of intake elbow are mutually in 90 °.
The present invention can also include：
1st, intake elbow is convergent nozzle, and the head end area of section of intake elbow is more than its tail end section area, described
Tracheae annular groove includes first kind tracheae annular groove and Equations of The Second Kind tracheae annular groove, and first kind tracheae annular groove and Equations of The Second Kind tracheae annular groove are each
Circumferentially arrangement and it is in 90 ° mutually be staggeredly arranged, first kind tracheae annular groove and Equations of The Second Kind tracheae annular groove it is of different sizes.
2nd, first kind tracheae annular groove and Equations of The Second Kind tracheae annular groove are obliquely installed, and its incline direction is sensing engine charge side
To.
The 3rd, extension is set on valve body, and extension sets and sets diversion cavity in the valve body below air inlet, air inlet,
Air inlet, diversion cavity are communicated and constitute exterior space, and exterior space is communicated with inner space；
Combustion gas vertically flows into diversion cavity through air inlet, and exterior space and inside full of valve inner are flowed into along diversion cavity
Space, a portion is flowed into the pressure stabilizing cavity of center by pressure compensation opening, and end pressure stabilizing cavity is connected with diversion cavity；
In the fuel gas injection valve course of work, when coil is not powered on, in the pretightning force of master reset spring and auxiliary back-moving spring
Under effect, the upper surface of seal band and valve seat on valve element is fitted close, valve inner of the combustion gas full of fuel gas injection valve
Exterior space and inner space；After coil electricity, armature is acted on by upward electromagnetic force, and valve element assembly is overcoming master reset
Moved upwards after spring, the pretightning force of auxiliary back-moving spring, valve element is separated with valve base surface, fuel gas injection valve is opened, gas circuit is opened,
Combustion gas is flowed into by the mixed admission mode in axially main air drain and circumferential tonifying Qi hole, and by ring cavity, air inlet is vertically flowed into by gas outlet
Bend pipe and tracheae, enter inlet manifold from the end of tracheae, first kind tracheae annular groove, Equations of The Second Kind tracheae annular groove；After coil blackout,
Under the pretightning force effect of master reset spring and auxiliary back-moving spring, armature is moved downward, and valve element assembly is integrally moved downward, directly
Fitted to spool face with valve base surface, come back to initial position, fuel gas injection valve is closed, and gas circuit is closed.
Advantage of the invention is that：Pressure compensation opening of the present invention, relief groove and pressure stabilizing cavity ensure that valve opening and closing
Stability, the response that strengthening system is supplied and died；Pass through the main direct air inlet of air drain in axial direction in valve and circumferential tonifying Qi gas inlet hole
Mixed admission mode, the stability of air inlet is improved while realizing big flow.When combustion gas sprays from fuel gas injection valve, combustion
Gas enters the bending section of air pipe structure from injection valve, because bending jet pipe is similar to convergent nozzle, so being sprayed through fuel gas injection valve
The combustion gas of injection enters the straight section of air pipe structure after the acceleration of convergent nozzle, and now gas flow rate is higher, and in gas
The straight section of pipe be provided with again circumferentially, tracheae annular groove not of uniform size, tracheae annular groove is staggeredly arranged mutually in 90 °, can also
Tracheae annular groove incline direction is set to towards engine charge direction according to actual needs.Meanwhile, the air in inlet manifold
The fuel gas high-speed flowing that miscellaneous the tracheae annular groove of volume sprays, further increases gas-air mixed effect, improves the equal of mixing
Even property, while tracheae straight section end improves air inlet response close to engine intake valve.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the overall structure diagram of fuel gas injection valve；
Fig. 3 is valve element composite unit structure schematic diagram；
Fig. 4 is the flow schematic diagram of gaseous fuel.
Embodiment
Illustrate below in conjunction with the accompanying drawings and the present invention is described in more detail：
Show with reference to Fig. 1-4, Fig. 1 for the overall structure of the integrated form porous gas fuel injection mixing arrangement of kind of mixed admission
It is intended to, including fuel gas injection valve portion 1a, intake elbow part 2b, air pipe structure part 3c.
In Fig. 2, electromagnet 1 is fixed on valve body 7 by fixing bolt 9, and coil 2 is wrapped in the annular groove inside electromagnet 1
It is interior, it has been sequentially arranged valve element assembly 5, valve seat 8 from top to bottom below electromagnet 1, bolt is passed through between valve seat 8 and valve body 7
It is fixed together, mating surface therebetween realizes sealing by O-ring seal 12.
Valve element assembly in Fig. 3 is main by guide finger 13, jump ring 21, armature 14, spring base 15, fastening bolt 24, pad
Piece 22, bottom plate 16 and valve element 17 are constituted, and armature 14 is linked together by fastening bolt 24 with bottom plate 16, valve element 17, armature 14
One layer of pad 22 is disposed between bottom plate 16, spring base 15 is arranged on the top of bottom plate 16, its internal side surface and armature
14 side surface is in contact, and the two ends of master reset spring 3 are located in the annular groove of electromagnet 1 and spring base 15 respectively, electromagnet 1
Center is provided with the straight trough of certain depth, and the guide finger 13 between electromagnet 1 and armature 14 is arranged in inside straight trough, in guide finger 13
The heart, which is provided with pressure compensation opening 20, bottom plate 16, is provided with a number of relief groove 23, it is to avoid armature 14 is made by axial force
Airline pressure is more easy to reach balance inside and outside at armature 14, the response speed of armature 14 is improved, between the top of guide finger 13 and electromagnet 1
Auxiliary back-moving spring 4 is disposed with, the center of armature 14 is arranged in, be directed to pin 13 using jump ring 21 fixes with armature 14
Come.The pressure compensation opening 20 of the center of guide finger 13 coordinates the relief groove 23 on bottom plate 16 to cause inside valve element assembly 5
Space is connected with exterior space, and inside and outside gas circuit reaches balance, and the inside and outside combustion gas no pressure of valve element assembly 5 is poor, it is to avoid from
By extra axial force during motion, valve element 17 is made up of valve element main body, fin 18 and seal band 19.Valve element assembly 5 is whole
Body is arranged in the lower section of electromagnet 1.
First, combustion gas is vertically flowed into valve body 7 by air inlet 26 during air inlet, is flowed into along diversion cavity 27 full of in valve body 7
Portion, a portion is flowed into the center pressure stabilizing cavity 29 of valve seat 8 by the pressure compensation opening 20 of guide finger 13, the centre bit of valve seat 8
The pressure stabilizing cavity 29 put is connected with the combustion gas space inside valve element assembly 5, and pressure stabilizing cavity 29 and valve body 7 at the periphery of valve seat 8
Interior diversion cavity 27 is connected.When coil 2 is not powered on, under the pretightning force effect of master reset spring 3 and auxiliary back-moving spring 4,
Valve element assembly 5 maintains motionless, the lower surface and valve seat of the seal band 19 of the valve element 17 in valve element assembly 5 in initial position
The upper surface of 8 outlet annulus 11 is brought into close contact, and now outlet annulus 11 is not yet connected with the inner space of valve body 7, and combustion gas is full of
Whole space inside the valve body 7 of fuel gas injection valve.After coil 2 is powered, electromagnet 1, armature 14 are magnetized, electromagnet 1 and rank
Magnetic loop is formed between iron 14, armature 14 is acted on the pretightning force for overcoming master reset spring 3 and auxiliary back-moving spring 4 by electromagnetic force
Motion upwards afterwards, motion is separated band movable valve plug 17 with the surface of valve seat 8 upwards, until upper surface and the electromagnet 1 of spring base 15
Lower surface is in contact, in whole motion process, the axial movement of armature 14 with it is circumferentially positioned by guide finger 13 and electromagnet 1 it
Between cooperation control to realize, now, gas circuit is opened, and magnetic valve is opened, gas is rapidly by axially main air drain 32 and circumferential tonifying Qi
The mixed admission mode in hole 28 is flowed into, and by multiple tracks ring cavity 30, is finally vertically flowed out by gas outlet 31, combustion gas is bent into air inlet
Pipe 3c, because air inlet swan-neck 3c caliber is gradually reduced, so this bending jet pipe effect is similar to convergent nozzle,
It can be seen from fluid mechanics knowledge, size and the rate of flow of fluid of sectional area are inversely proportional, so this bending jet pipe can be to infrasound
Fast air-flow produces acceleration, so that the combustion gas ejected enters air pipe structure 33 after the acceleration of convergent nozzle, this
When gas flow rate it is higher, tracheae be provided with again circumferentially, tracheae annular groove 35 and 36 not of uniform size, due to annular groove 35 and ring
Groove 36 is not of uniform size to be caused, and causes the gas flow rate sprayed by annular groove also inconsistent, so as to form certain velocity gradient.Also increase
The speed difference of air velocity, serves the effect for strengthening mixing in big and inlet manifold, and in order to reduce pipe resistance, can also
Consider fuel gas injection tracheae annular groove being obliquely installed to tilt, direction is set to towards engine charge direction.
Motor intake manifold 34 outside tracheae sucks air simultaneously, because the size of tracheae annular groove 35 and 36 has necessarily
Difference, so the combustion gas speed sprayed by different tracheae annular groove is different, due to the relatively fast air velocity of gas flow rate
It is relatively slow, and there is velocity gradient in gas flow rate, can so cause mixed effect more uniform, improve engine
The uniformity of mixed Daqu, while the end of tracheae 33 improves air inlet response close to engine intake valve, so as to aobvious
Write and reduce combustion gas remaining in inlet manifold 34, improve efficiency of combustion and acting ability.
When coil 2 is powered off, the electromagnetic force that armature 14 is subject to disappears, the master reset bullet between electromagnet 1 and spring base 15
In the presence of auxiliary back-moving spring 4 between spring 3 and guide finger 13 and electromagnet 1, armature 14 is moved downward, and band movable valve plug 17 is downward
Motion, until the surface of valve element 17 is fitted with the surface of valve seat 8, armature 14 returns to initial position, and gas circuit is closed, system supply knot
Beam.
Axially the mixed admission mode of the direct air inlet of main air drain 32 and the circumferential air inlet of tonifying Qi hole 28, increases charge flow rate system
Number, realizes big flow, is effectively improved the supply efficiency of fuel gas injection valve, while air-flow can be avoided to interfere, realizes gas circuit
Balance, stably；Multiple-sealed annulus 19 and the structure of outlet annulus 11 are used between valve element 17 and valve seat 8, fuel gas injection valve is realized
Face sealing, voltage stabilizing balance, and wider annulus area can reduce impact, raising reliability；At the center of valve seat 8 and periphery
Pressure stabilizing cavity 29 is respectively provided with, can effectively suppress the fluctuation of gaseous-pressure inside fuel gas injection valve can make ventilation uniform, realize air-flow
Steady operation, reliably working realizes high response speed.
It is as follows that the technology of the present invention solves content：
A kind of integrated form porous gas fuel injection mixing arrangement of mixed admission of the present invention, mainly by electromagnetism valve portion,
Intake elbow part and air pipe structure part composition, wherein fuel gas injection valve portion include electromagnet, major-minor back-moving spring, led
To pin, valve element, fin, main air drain, tonifying Qi hole, seal band, outlet annulus, valve body, valve seat, pressure stabilizing cavity, pressure compensation opening and
Relief groove；Electromagnet is fixed on valve body by fixing bolt, and coil is wrapped in the annular groove inside electromagnet, in electromagnetism
Valve element assembly, valve seat have been sequentially arranged from top to bottom below iron, be bolted to connection between valve seat and valve body together with,
Therebetween mating surface realizes sealing by O-ring seal.It is bolted between the valve seat and valve body of fuel gas injection valve
Link together, mating surface therebetween realizes sealing by O-ring seal；Valve element assembly is by guide finger, armature, bullet
Spring abutment, pad, bottom plate, jump ring, fastening bolt and valve element composition, armature are linked together by fastening bolt with bottom plate, valve element,
One layer of pad is disposed between armature and bottom plate, spring base is arranged on the top of bottom plate, the side of its internal side surface and armature
Surface is in contact, and the two ends of master reset spring are located in the annular groove of electromagnet and spring base respectively, and electromagnet center is provided with one
The straight trough of depthkeeping degree, the guide finger between electromagnet and armature is arranged in inside straight trough, and guide pin centre is provided with pressure compensation opening,
It is provided with bottom plate above a number of relief groove, guide finger and is disposed with auxiliary back-moving spring between electromagnet, is arranged in
The center of armature, is directed to pin using jump ring and is fixed up with armature, valve element is by valve element main body, fin and seal band group
Into valve element assembly integral arrangement is opened circumferential tonifying Qi hole on the fin of valve element and set at tonifying Qi hole below electromagnet
Diversion angle of cone, between valve element and valve seat use seal band and outlet zonary structure, face sealing, voltage stabilizing balance, and with compared with
Wide annulus area, is provided with pressure stabilizing cavity, pressure stabilizing cavity and the valve element group of valve seat center at valve seat center and periphery
Combustion gas space inside zoarium is connected, and the pressure stabilizing cavity at valve seat periphery is connected with the diversion cavity in valve body.
Intake elbow part is that intake elbow part described in one is a hollow tubular structure, and the two ends of bend pipe are cut
Face axis is mutually in 90 °.So intake elbow effect is similar to convergent nozzle, the combustion gas sprayed by fuel gas injection valve can be entered
Row accelerates, increase below in tracheae straight section gas flow rate and air velocity in inlet manifold speed difference so that strengthen combustion gas and
The turbulent flow tear immixture of air, air volume in inlet manifold it is miscellaneous fuel gas high-speed flowing, further increase combustion gas empty
Gas mixed effect, improves the uniformity of mixing.The minimum end of intake elbow part caliber and air pipe structure are connected using screw thread
Connect, and sealed using special high temperature resistant thread locking adhesive, to ensure air-tightness therebetween.
Air pipe structure is wall thickness 2mm stainless steel tube, to adapt to the environment of high temperature corrosion in engine inlets.And
Circumferential groove in its end portion is provided with air pipe structure.Annular groove is staggeredly arranged, and the center line for the annular groove being staggeredly arranged is orthogonal.Annular groove is big
Small to be as needed set to annular groove opening tilt, incline direction is towards engine charge direction.Meanwhile, inlet manifold
Interior air volume it is miscellaneous fuel gas high-speed flowing, further increase gas-air mixed effect, improve the uniformity of mixing.Gas
Pipe end is as close to engine intake valve, depending on the specific length of tracheae is with engine different type, to improve engine
Air inlet response, reduces residual combustion gases in air intake duct.
Claims (4)
1. a kind of integrated form of mixed admission intersects annular groove gaseous fuel jet mixing device, it is characterized in that：Including fuel gas injection
Valve portion, intake elbow, tracheae；
Fuel gas injection valve portion includes valve body, valve seat, electromagnet, valve element assembly, and electromagnet is arranged on valve body, and valve body is installed
On valve seat, wound around coil in valve space, electromagnet is formed between electromagnet, valve body and valve seat, valve element assembly is located at valve
In space and it is arranged on below electromagnet, described valve element assembly includes armature, spring base, bottom plate, valve element, guide finger, rank
Iron, bottom plate, valve element arrange that spring base is located at outside armature and and armature while being linked together by fastening bolt from top to bottom
Between form annular groove, annular groove is set inside electromagnet, and the two ends of master reset spring are arranged in the annular groove of electromagnet
In the annular groove of spring base, guide finger is installed in armature center, and guide finger is stretched in electromagnet, sets auxiliary multiple in electromagnet
Position spring, the two ends of auxiliary back-moving spring contact to set in electromagnet and guide finger, guide finger respectively and set on pressure compensation opening, bottom plate
Relief groove is put, valve element is that center pressure stabilizing cavity is set on the valve seat below hollow structure, valve element, and the outer end of valve seat sets end
Pressure stabilizing cavity, pressure compensation opening, relief groove, the hollow space of valve element and center pressure stabilizing cavity communicate and constitute inner space,
Set on valve element and outlet annulus be set on seal band, seal band formation ring cavity, valve seat, outlet annulus is located at below ring cavity,
Gas outlet is set below outlet annulus, and valve element upper surface opens up and is provided with circumferential tonifying Qi hole on axially main air drain, fin, and in tonifying Qi
Diversion angle of cone is set at hole；
The head end of intake elbow is arranged on below gas outlet, and the end connection tracheae of intake elbow, tracheae is located in inlet manifold,
Tracheae annular groove is set on tracheae, and the head end and the end section axis of end two of intake elbow are mutually in 90 °.
2. a kind of integrated form of mixed admission according to claim 1 intersects annular groove gaseous fuel jet mixing device, its
It is characterized in：Intake elbow is convergent nozzle, and the head end area of section of intake elbow is more than its tail end section area, described tracheae
Annular groove includes first kind tracheae annular groove and Equations of The Second Kind tracheae annular groove, and first kind tracheae annular groove and Equations of The Second Kind tracheae annular groove are each into week
To arrangement and it is in 90 ° mutually be staggeredly arranged, first kind tracheae annular groove and Equations of The Second Kind tracheae annular groove it is of different sizes.
3. a kind of integrated form of mixed admission according to claim 2 intersects annular groove gaseous fuel jet mixing device, its
It is characterized in：First kind tracheae annular groove and Equations of The Second Kind tracheae annular groove are obliquely installed, and its incline direction is sensing engine charge direction.
4. annular groove gaseous fuel injection mixing dress is intersected according to a kind of integrated form of any described mixed admissions of claim 1-3
Put, it is characterized in that：Extension is set on valve body, and extension sets and sets water conservancy diversion in the valve body below air inlet, air inlet
Chamber, air inlet, diversion cavity are communicated and constitute exterior space, and exterior space is communicated with inner space；
Combustion gas vertically flows into diversion cavity through air inlet, and exterior space and inside sky full of valve inner are flowed into along diversion cavity
Between, a portion is flowed into the pressure stabilizing cavity of center by pressure compensation opening, and end pressure stabilizing cavity is connected with diversion cavity；
In the fuel gas injection valve course of work, when coil is not powered on, acted in the pretightning force of master reset spring and auxiliary back-moving spring
Under, the upper surface of seal band and valve seat on valve element is fitted close, the outside of valve inner of the combustion gas full of fuel gas injection valve
Space and inner space；After coil electricity, armature is acted on by upward electromagnetic force, and valve element assembly is overcoming master reset bullet
Moved upwards after spring, the pretightning force of auxiliary back-moving spring, valve element is separated with valve base surface, fuel gas injection valve is opened, gas circuit is opened, combustion
Gas is flowed into by the mixed admission mode in axially main air drain and circumferential tonifying Qi hole, by ring cavity, air inlet is vertically flowed into by gas outlet curved
Pipe and tracheae, enter inlet manifold from the end of tracheae, first kind tracheae annular groove, Equations of The Second Kind tracheae annular groove；After coil blackout,
Under the pretightning force effect of master reset spring and auxiliary back-moving spring, armature is moved downward, and valve element assembly is integrally moved downward, until
Spool face is fitted with valve base surface, comes back to initial position, and fuel gas injection valve is closed, and gas circuit is closed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710504571.2A CN107061061A (en) | 2017-06-28 | 2017-06-28 | A kind of integrated form of mixed admission intersects annular groove gaseous fuel jet mixing device |
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| CN201710504571.2A CN107061061A (en) | 2017-06-28 | 2017-06-28 | A kind of integrated form of mixed admission intersects annular groove gaseous fuel jet mixing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN107956604A (en) * | 2017-12-28 | 2018-04-24 | 中船动力研究院有限公司 | Gas/dual fuel engine integral type methane air inlet pipe fuel gas ejecting device |
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