CN106979109B - A kind of double oil duct fuel injectors and control method of controllable mixture ratio of fuel to oil example - Google Patents
A kind of double oil duct fuel injectors and control method of controllable mixture ratio of fuel to oil example Download PDFInfo
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- CN106979109B CN106979109B CN201710168394.5A CN201710168394A CN106979109B CN 106979109 B CN106979109 B CN 106979109B CN 201710168394 A CN201710168394 A CN 201710168394A CN 106979109 B CN106979109 B CN 106979109B
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Classifications
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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
- F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
- F02M43/04—Injectors peculiar thereto
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
- F02D19/081—Adjusting the fuel composition or mixing ratio; Transitioning from one fuel to the other
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The present invention provides a kind of double oil duct fuel injectors of controllable mixture ratio of fuel to oil example and control methods, including connector component, external oil pipe connector and valve component；The connector component includes upper connector, lower connector and intermediate connecting body；The both ends of the intermediate connecting body are connect with upper connector and lower connector respectively；The connector component top installs external oil pipe connector；The lower connector is equipped with nozzle；It include L oil duct interface and H oil duct interface in the external oil pipe connector；The connector component is equipped with the second oil input channel, the first oil input channel and mixing chamber, and second oil input channel and the first oil input channel are respectively mixing chamber connection；The valve component is mounted on connector components interior.The present invention can be using double oil input channels, can be by controlling the circulation area and two oil duct flow resistances of two oil input channels, so that reaching two oil duct switchings of control and dynamic two oil ducts of control sprays into indoor fuel ratio of burning.
Description
Technical field
The present invention relates to the fuel injector field of diesel engine, in particular to a kind of double oil duct oil spouts of controllable mixture ratio of fuel to oil example
Device and control method.
Background technique
Currently, as emission regulation is more and more tighter, it is higher and higher for the emission request of diesel engine, in order to meet national row
Put the requirement of regulation, the diesel engine of each diesel oil manufacture and design is normally applied high pressure co-rail system, and has that emission request is higher,
The higher trend of pressure in common rail, it is therefore an objective to keep the atomized particle size of oil spout thinner, thus not reducing engine power performance
Under the conditions of, reduce noxious emission.But, the rail pressure of diesel engine high-pressure co-rail system has been over 160MPa, even up to
200MPa, becomes closer to the application strength degree of material, and require the machining accuracy of part also very strict, to meet
Seal request.Therefore, with the deterioration of environment, emission regulation will be increasingly stringenter, for developing being total to for higher injection pressure
Rail system will face huge challenge, risk and high cost.
In 2008, in order to meet the Europe-V discharge standard of European Union, the high pressure common rail electric-controlled spray of the third generation of Bosch company
Oily device is to be increased to 180MPa for injection pressure, and the injection pressure of the common rail system oil atomizer of Delphi company can also reach
To highest 160MPa.In recent years, some common rail system providers are also stepping up the pressure of oil spout, it is highest to have connect
Nearly 200MPa, but batch does not enter market to these products substantially, illustrates the raising with injection pressure, it is cheap meeting
Under the conditions of production cost, it is difficult to meet the high reliability request of product.Improving injection pressure is one for improving atomization quality
Approach, forming the anxious boiling fuel-oil atmozation of sudden strain of a muscle furthermore with high oil spout temperature is also an advantageous developing direction.This skill
Art is applied on high-pressure common rail the ability also very promising, it makes full use of the anxious boiling of sudden strain of a muscle to promote atomization, makes in same oil spout
Under pressure or in smaller situation, fuel atomization fineness (SMD) can be reduced, while not reducing the dynamic property of engine.But
After this reinforcing using diesel heating, sprays into combustion chamber and formed and dodge anxious the phenomenon that boiling, reducing atomizing particle (SMD) also has centainly
Defect, i.e., by heating strengthen constant high temperature diesel oil spray into combustion chamber, can result in engine power performance and emission performance be certain
Missing the invention proposes combustion chamber is injected into diesel fuel temperature gradient, that is, solves engine to cope with this disadvantage
The decline of dynamic property decreases the emission problem of engine.The present invention proposes that some special constructions and control strategy are sufficiently sent out
It has waved fuel oil and has dodged anxious boiling effect acceleration air-fuel mixture speed, flame mechanism, improved power performance and the economy performance, the row of reduction
It puts.
Summary of the invention
In response to the deficiencies in the existing technology, the present invention provides a kind of double oil duct fuel injectors of controllable mixture ratio of fuel to oil example
And control method, it can be by controlling the circulation area and two oil duct flow resistances of two oil input channels, to reach control two
Oil duct switching and dynamic two oil ducts of control spray into indoor fuel ratio of burning.
The present invention achieves the above technical objects by the following technical means.
A kind of double oil duct fuel injectors of controllable mixture ratio of fuel to oil example, including connector component, external oil pipe connector and valve
Body component；The connector component includes upper connector, lower connector and intermediate connecting body；The both ends of the intermediate connecting body point
It is not connect with upper connector and lower connector；The intermediate connecting body is equipped with patching jack, gives the valve body for external power supply
Assembly power supply；The connector component top installs external oil pipe connector；The lower connector is equipped with nozzle；The outside
It include the first oil duct interface and the second oil duct interface in oil pipe connector；The connector component is equipped with the second oil input channel, first
Oil input channel and mixing chamber, second oil input channel and the first oil input channel are respectively mixing chamber connection；The valve component is mounted on
Connector components interior, by control the valve component make the second oil duct interface and the second oil input channel, the first oil duct interface and
First oil input channel is switched on or off, and is switched on or off mixing chamber with the nozzle by controlling the valve component.
Further, the valve component includes electromagnetic coil group, the first valve body and the second valve body；The electromagnetic coil group with
The patching jack connection；It is equipped with the first valve body in the lower connector, the first valve body is controlled by electromagnetic coil group, makes to mix
Chamber is closed to be switched on or off with the nozzle；It is equipped with the second valve body in the upper connector, passes through electromagnetic coil group control second
Valve body is switched on or off the second oil duct interface with the first oil input channel with the second oil input channel, the first oil duct interface.
Further, the electromagnetic coil group includes concatenated first electromagnetic coil and the second electromagnetic coil；Second electricity
Magnetic coil is mounted in lower connector, dynamic for controlling first valve body；First electromagnetic coil is mounted on connector
It is interior, for controlling second valve body.
Further, second valve body includes upper valve body, lower valve body, valve block and valve body spring；The electromagnetic coil group
Iron core in penetrate valve block；Upper valve body and lower valve body are placed in the valve block, the upper valve body is equipped with the first recirculation hole
With third recirculation hole, the lower valve body is equipped with the second recirculation hole and the 4th recirculation hole, passes through first recirculation hole and second
Through-hole conducting, makes the first oil duct interface and the first oil input channel, is connected by the third recirculation hole with the 4th recirculation hole, makes second
Oil duct interface is connected with the second oil input channel；The electromagnetic coil group controls the upper valve body and lower valve body mutually moves；The valve
Body spring is mounted on inside the upper valve body and the lower valve body, for resetting upper valve body and lower valve body.
Further, first recirculation hole and the second recirculation hole are staggeredly connected, mutual by the upper valve body and lower valve body
Movement, so that the second oil duct interface is gradually turned on the second oil input channel, and the first oil duct interface is progressively closed off with the first oil input channel,
Or the second oil duct interface is progressively closed off with the second oil input channel, and the first oil duct interface is gradually turned on the first oil input channel.
Further, the maximum distance 0.4-0.8mm that first recirculation hole and the second recirculation hole are staggeredly connected.
Further, the external oil pipe connector is equipped with return, and the return is connect with return flow line.
A kind of control method of double oil duct fuel injectors of controllable mixture ratio of fuel to oil example, following steps:
S1: it sets the first valve body and opens minimum current as I0If it is I that the second valve body, which opens minimum current,1If the first valve body and
Second valve body is opened simultaneously, and having minimum current when same acceleration is I2；The size relation of electric current is I0<I1<I2；I is
The electric current of electromagnetic coil group；
S2: minimum electromagnetic force required for the first valve body is opened is set as F0If it is F that the second valve body, which opens minimum electromagnetic force,1,
The size relation of electromagnetic force is F0<F1；
S3: work as I0<I<I1When, the first valve body is slowly opened, and the second valve body does not move, the first oil duct interface and the first oil inlet
Road conducting, mixing chamber are connected with the nozzle, i.e. the first oil duct fuel oil is sprayed from nozzle；
S4: work as I1<I<I2When, the first valve body (1) accelerates to open, and the second valve body setting in motion, and what the second valve body was opened adds
Speed is less than the first valve body, and in injection process, the first oil duct interface is progressively closed off with the first oil input channel and the second oil duct connects
Mouth is gradually opened with the second oil input channel, and dynamic change occurs for the fuel flow of the first oil input channel and the second oil input channel, to realize
First oil duct fuel oil and the mixing of the second oil duct fuel oil are sprayed from nozzle；
S5: work as I > I2When, second the first valve body of valve body acceleration ratio is fast, i.e., the first oil duct interface and the first oil input channel be rapidly
Close and the second oil duct interface is quickly opened with the second oil input channel, the first valve body of fuel injector before fully opening, mixing chamber it is interior by
First oil duct fuel oil is wholly converted into the second oil duct fuel oil, i.e. the second oil duct fuel oil is sprayed from nozzle.
The invention has the advantages that:
1. the double oil duct fuel injectors and control method of controllable mixture ratio of fuel to oil example of the present invention, can be using double oil inlets
Road, one is conventional room temperature fuel oil, the other is extraordinary fuel oil (can be high temp oil-fired, can also be other type flammable liquids
Fuel).
2. the double oil duct fuel injectors and control method of controllable mixture ratio of fuel to oil example of the present invention can pass through control two
The circulation area of a oil input channel and two oil duct flow resistances, to reach two oil of two oil duct switchings of control and dynamic control
Road sprays into indoor fuel ratio of burning.
3. the double oil duct fuel injectors and control method of controllable mixture ratio of fuel to oil example of the present invention, can directly pass through electricity
Stream size controls electromagnetic force to control the switch of the first valve body and the second valve body and movement velocity difference, simplifies the automatically controlled mark of fuel injector
Fixed and electric-controlled unit program.
4. the double oil duct fuel injectors and control method of controllable mixture ratio of fuel to oil example of the present invention, can be realized two oil
Road mixed proportion 0%~100% is controlled in Millisecond, while being exaggerated flow cross-section areas using special designing, to improve spray
Oily rate and reduction oil injection duration have established advantageous condition.
5. the double oil duct fuel injectors and control method of controllable mixture ratio of fuel to oil example of the present invention, can be used in double fuel
On engine, the complexity of engine fuel system is reduced.
6. the double oil duct fuel injectors and control method of controllable mixture ratio of fuel to oil example of the present invention are used in high temp oil-fired ladder
It spends on injector, fuel oil can be given full play to and dodge anxious wallop, accelerate the speed of air-fuel mixture, meanwhile, avoid diesel heating strong
Fuel oil constant high temperature jet band carrys out the problem of engine power performance decline after change.
Detailed description of the invention
Fig. 1 is the outline drawing of double oil duct fuel injectors of controllable mixture ratio of fuel to oil example of the present invention.
Fig. 2 is the top view of double oil duct fuel injectors of controllable mixture ratio of fuel to oil example of the present invention.
Fig. 3 is the A-A cross-sectional view of Fig. 2.
Fig. 4 is the B-B cross-sectional view of Fig. 2.
Fig. 5 is the oil inlet pipe schematic diagram of Fig. 4.
Fig. 6 is the off working state schematic diagram of the second valve body of the present invention.
Fig. 7 is the working state schematic representation of the second valve body of the present invention.
Fig. 8 is electric current of the present invention and pretightning force control planning Line Chart.
In figure:
The first valve body of 1-；2- nozzle；Connector under 3-；4- external oil pipe connector；5- patching jack；The first oil input channel of 6-；
7- the first oil duct interface；The second electromagnetic coil of 8-；9- mixing chamber；10- intermediate connecting body；The first electromagnetic coil of 11-；12- second
Oil input channel；13- the second oil duct interface；The upper connector of 14-；15- lower valve body；16- valve block；17- valve body spring；18- upper valve body；
The first recirculation hole of 19-；The second recirculation hole of 20-；21- return；22- third recirculation hole；The 4th recirculation hole of 23-.
Specific embodiment
Present invention will be further explained with reference to the attached drawings and specific examples, but protection scope of the present invention is simultaneously
It is without being limited thereto.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of double oil duct fuel injectors of controllable mixture ratio of fuel to oil example, including connector
Component, external oil pipe connector 4 and valve component；The connector component includes that upper connector 14, lower connector 3 and centre connect
Junctor 10；The both ends of the intermediate connecting body 10 are connect with upper connector 14 and lower connector 3 respectively；The intermediate connecting body 10
It is equipped with patching jack 5, is powered for external power supply to the valve component；The connector component top installation external oil pipe connects
Junctor 4；The lower connector 3 is equipped with nozzle 2；It include the first oil duct interface 7 and the second oil in the external oil pipe connector 4
Pipeline joint 13；The connector component is equipped with the second oil input channel 12, the first oil input channel 6 and mixing chamber 9, second oil input channel 12
It is respectively that mixing chamber 9 is connected to the first oil input channel 6；The valve component is mounted on connector components interior, by described in control
Valve component makes the second oil duct interface 13 and the second oil input channel 12, the first oil duct interface 7 and the conducting of the first oil input channel 6 or closes
It closes, is switched on or off mixing chamber 9 with the nozzle 2 by controlling the valve component.
The valve component includes electromagnetic coil group, the first valve body 1 and the second valve body；The electromagnetic coil group is inserted with described
Line seat 5 connects；It is equipped with the first valve body 1 in the lower connector 3, the first valve body is controlled by electromagnetic coil group, makes to mix
Chamber 9 is switched on or off with the nozzle 2；It is equipped with the second valve body in the upper connector 14, passes through electromagnetic coil group control the
Two valve bodies, make the second oil duct interface 13 and the second oil input channel 12, the first oil duct interface 7 and the conducting of the first oil input channel 6 or
It closes.
In order to match the control of oil temperature dynamic change, the electromagnetic coil group special designing arrangement, i.e., the described electromagnetic coil group
Including concatenated first electromagnetic coil 11 and the second electromagnetic coil 8；Second electromagnetic coil 8 is mounted in lower connector 3, is used
It is moved in controlling first valve body 1；First electromagnetic coil 11 is mounted in connector 14, for controlling described second
Valve body.So the second electromagnetic coil 8 and the first electromagnetic coil 11 generate magnetic field and to the first valve body 1 and the second valve body simultaneously
Generate electromagnetic force.The number of turns of corresponding first electromagnetic coil 11 of other second valve body and the pretightning force and the first valve body of valve body spring 17
1 is different, which results in the states such as start-up time, the speed, acceleration of the second valve body and the first valve body 1 are different, realize
Second valve body and the movement of the first valve body differentiation.It only needs through leading in the first electromagnetic coil 11 and the second electromagnetic coil 8
Line is cascaded, and then controls the size of current in the conducting wire drawn out of fuel injector and duration, fuel injector can be realized
The unlatching of first valve body and the movement different situations of the second valve body combine, and realize different fuel injection modes.
Shown in Fig. 4 and Fig. 5, second valve body includes upper valve body 18, lower valve body 15, valve block 16 and valve body spring 17；
Valve block 16 is penetrated in the iron core of the electromagnetic coil group；Upper valve body 18 and lower valve body 15 are placed in the valve block 16, it is described
Upper valve body 18 be equipped with the first recirculation hole 19 and third recirculation hole 22, the lower valve body 15 is equipped with the second recirculation hole 20 and the 4th stream
Through-hole 23 is connected by first recirculation hole 19 and the second recirculation hole 20, makes the first oil duct interface 7 and the first oil input channel 6；It is logical
It crosses the third recirculation hole 22 and the 4th recirculation hole 23 is connected, the second oil duct interface 13 and the second oil input channel 12 is connected；It is described
Electromagnetic coil group controls the upper valve body 18 and lower valve body 15 mutually moves；The valve body spring 17 is mounted on the upper valve body 18
Inside the lower valve body 15, for resetting upper valve body 18 and lower valve body 15.
If Fig. 6 and Fig. 7 is upper valve body 18 and lower valve body 15 in the position of off working state and working condition, when described first
When recirculation hole 19 and the second recirculation hole 20 are staggeredly connected, the third recirculation hole 22 is not turned on the 4th recirculation hole 23, makes second
Oil duct interface 13 and the second oil input channel 12 are closed, and the first oil duct interface 7 and the first oil input channel 6 are connected；Pass through the upper valve body 18
It is mutually moved with lower valve body 15, so that first recirculation hole 19 is gradually not turned on the second recirculation hole 20, and third recirculation hole
22 are gradually turned on the 4th recirculation hole 23, i.e., so that the second oil duct interface 13 is gradually turned on the second oil input channel 12, and the first oil
Pipeline joint 7 is progressively closed off with the first oil input channel 6.
Upper valve body 18 and lower valve body 15 of the invention respectively only have 0.2-0.4mm movement travel, by they each other it
Between cooperation, final unlatching distance can be made to reach 0.4-0.8mm, i.e., described first recirculation hole 19 and the second recirculation hole 20 are handed over
The maximum distance 0.4-0.8mm of mistake conducting.It is maximum wide that the cumulative unlatching section for realizing the second valve body is carried out using principle so
Degree is 0.8-1.6mm, it can not only increase oil input channel circulating face, reduce the circulating resistance at the second valve body, while can
Guarantee the real-time that the second valve body is opened.This design is conducive to fuel injector and increases injection rate, reduces engine combustion process
Time is conducive to improve hair machine power.On the other hand, the second valve body stroke is identical as 1 stroke of the first valve body, ensure that
The timeliness that two valve bodies are opened is as the first valve body 1.
Return flow line is equipped in the connector component, the external oil pipe connector 4 is equipped with return 21, described
Return 21 is connect with return flow line, and the effect of drainback passage is exactly in order to be formed on about 1 two surface of the first valve body
Pressure difference, when the first valve body is opened, fuel oil drains the high pressure fuel oil on 1 surface of the first valve body by back oil road, thus more
The pressure of the fast unlatching for generating the first valve body 1.
A kind of control method of double oil duct fuel injectors of controllable mixture ratio of fuel to oil example, which is characterized in that following steps:
S1: it sets the first valve body 1 and opens minimum current as I0If it is I that the second valve body, which opens minimum current,1If the first valve body 1
It is opened simultaneously with the second valve body, and having minimum current when same acceleration is I2；The size relation of electric current is I0<I1<I2；I
For the electric current of electromagnetic coil group；
S2: minimum electromagnetic force required for the first valve body 1 is opened is set as F0If it is F that the second valve body, which opens minimum electromagnetic force,1,
The size relation of electromagnetic force is F0<F1；
S3: work as I0<I<I1When, the first valve body 1 is slowly opened, and the second valve body does not move, the first oil duct interface 7 and first into
Oil duct 6 is connected, and mixing chamber 9 and the nozzle 2 are connected, i.e. the first oil duct fuel oil is sprayed from nozzle 2；
S4: work as I1<I<I2When, the first valve body 1 accelerates to open, and the second valve body setting in motion, the acceleration that the second valve body is opened
Degree is less than the first valve body 1, and in injection process, the first oil duct interface 7 and the first oil input channel 6 are progressively closed off and the second oil duct connects
Mouth 13 is gradually opened with the second oil input channel 12, and dynamic change occurs for the fuel flow of the first oil input channel 6 and the second oil input channel 12, from
And it realizes the first oil duct fuel oil and the mixing of the second oil duct fuel oil and is sprayed from nozzle 2；
S5: work as I > I2When, second the first valve body of valve body acceleration ratio 1 is fast, i.e. the first oil duct interface 7 and the first oil input channel 6
Scram and the second oil duct interface 13 and the second oil input channel 12 are quickly opened, and fuel injector the first valve body 1 mixes before fully opening
It closes in chamber 9 and second oil duct fuel oil is wholly converted by the first oil duct fuel oil, is i.e. the second oil duct fuel oil is sprayed from nozzle 2.
As shown in figure 8, left ordinate scale axis represents acceleration, right ordinate scale axis represents and opens electromagnetic force, axis of abscissas
Represent the size of current in electromagnetic coil group.I0Minimum current, I are opened for the first valve body 11Minimum current is opened for the second valve body,
I2It is opened simultaneously for the first valve body 1 and the second valve body, and minimum current when with same acceleration.The size relation of electric current can
With I as seen from the figure0<I1<I2；F0Minimum electromagnetic force, F required for being opened for the first valve body 11Minimum electricity is opened for the second valve body
Magnetic force, it can be seen that F in figure0<F1。
The embodiment is a preferred embodiment of the present invention, but present invention is not limited to the embodiments described above, not
In the case where substantive content of the invention, any conspicuous improvement that those skilled in the art can make, replacement
Or modification all belongs to the scope of protection of the present invention.
Claims (6)
1. a kind of double oil duct fuel injectors of controllable mixture ratio of fuel to oil example, which is characterized in that connect including connector component, external oil pipe
Junctor (4) and valve component；
The connector component includes upper connector (14), lower connector (3) and intermediate connecting body (10)；The intermediate connecting body
(10) both ends are connect with upper connector (14) and lower connector (3) respectively；The intermediate connecting body (10) is equipped with patching jack
(5), it powers for external power supply to the valve component；The connector component top installs external oil pipe connector (4)；Institute
Lower connector (3) are stated equipped with nozzle (2)；
It include the first oil duct interface (7) and the second oil duct interface (13) in the external oil pipe connector (4)；The fixture body
Part is equipped with the second oil input channel (12), the first oil input channel (6) and mixing chamber (9), second oil input channel (12) and the first oil input channel
It (6) is respectively mixing chamber (9) connection；The valve component is mounted on connector components interior, by controlling the valve component
Make the second oil duct interface (13) and the second oil input channel (12), the first oil duct interface (7) and the first oil input channel (6) conducting or closes
It closes, is switched on or off mixing chamber (9) with the nozzle (2) by controlling the valve component；
The valve component includes electromagnetic coil group, the first valve body (1) and the second valve body；The electromagnetic coil group and the plug wire
Seat (5) connection；It is equipped with the first valve body (1) in the lower connector (3), the first valve body is controlled by electromagnetic coil group, is made
Mixing chamber (9) is switched on or off with the nozzle (2)；It is equipped with the second valve body in the upper connector (14), passes through electromagnetic wire
Circle group controls the second valve body, makes the second oil duct interface (13) and the second oil input channel (12), the first oil duct interface (7) and first
Oil input channel (6) is switched on or off；
Second valve body includes upper valve body (18), lower valve body (15), valve block (16) and valve body spring (17)；The electromagnetic wire
Valve block (16) are penetrated in the iron core of circle group；Upper valve body (18) and lower valve body (15) are placed in the valve block (16), it is described
Upper valve body (18) is equipped with the first recirculation hole (19) and third recirculation hole (22), and the lower valve body (15) is equipped with the second recirculation hole (20)
With the 4th recirculation hole (23), is connected by first recirculation hole (19) and the second recirculation hole (20), makes the first oil duct interface (7)
It is connected with the first oil input channel (6), is connected by the third recirculation hole (22) and the 4th recirculation hole (23), makes the second oil duct interface
(13) it is connected with the second oil input channel (12)；The electromagnetic coil group controls the upper valve body (18) and lower valve body (15) is mutually transported
It is dynamic；The valve body spring (17) is mounted on the upper valve body (18) and the lower valve body (15) is internal, for resetting upper valve body
(18) and lower valve body (15).
2. double oil duct fuel injectors of controllable mixture ratio of fuel to oil example according to claim 1, which is characterized in that the electromagnetic coil
Group includes concatenated first electromagnetic coil (11) and the second electromagnetic coil (8)；Second electromagnetic coil (8) is mounted on lower connection
In body (3), for controlling the first valve body (1) movement；First electromagnetic coil (11) is mounted in connector (14),
For controlling second valve body.
3. double oil duct fuel injectors of controllable mixture ratio of fuel to oil example according to claim 1, which is characterized in that when described first-class
When through-hole (19) and the second recirculation hole (20) are staggeredly connected, the third recirculation hole (22) is not turned on the 4th recirculation hole (23)；
It is mutually moved by the upper valve body (18) and lower valve body (15), so that first recirculation hole (19) and the second recirculation hole (20)
It is gradually not turned on, and third recirculation hole (22) is gradually turned on the 4th recirculation hole (23).
4. double oil duct fuel injectors of controllable mixture ratio of fuel to oil example according to claim 3, which is characterized in that first circulation
The maximum distance that hole (19) and the second recirculation hole (20) are staggeredly connected is 0.4-0.8mm.
5. double oil duct fuel injectors of controllable mixture ratio of fuel to oil example described in any one of -4 according to claim 1, which is characterized in that institute
It states and is equipped with return flow line in connector component, the external oil pipe connector (4) is equipped with return (21), and the reflux connects
Mouth (21) is connect with return flow line.
6. a kind of control method of double oil duct fuel injectors of controllable mixture ratio of fuel to oil example, which is characterized in that following steps:
S1: it sets the first valve body (1) and opens minimum current as I0If it is I that the second valve body, which opens minimum current,1If the first valve body (1)
It is opened simultaneously with the second valve body, and having minimum current when same acceleration is I2；The size relation of electric current is I0<I1<I2；I
For the electric current of electromagnetic coil group；
S2: minimum electromagnetic force required for the first valve body (1) is opened is set as F0If it is F that the second valve body, which opens minimum electromagnetic force,1, electricity
The size relation of magnetic force is F0<F1；
S3: work as I0<I<I1When, the first valve body (1) is slowly opened, and the second valve body do not move, the first oil duct interface (7) with first into
Oil duct (6) conducting, mixing chamber (9) and nozzle (2) are connected, i.e. the first oil duct fuel oil is sprayed from nozzle (2)；
S4: work as I1<I<I2When, the first valve body (1) accelerates to open, and the second valve body setting in motion, the acceleration that the second valve body is opened
Less than the acceleration of the first valve body (1), in injection process, the first oil duct interface (7) and the first oil input channel (6) progressively close off and
Second oil duct interface (13) is gradually opened with the second oil input channel (12), the fuel oil of the first oil input channel (6) and the second oil input channel (12)
Dynamic change occurs for flow, to realize that the first oil duct fuel oil and the mixing of the second oil duct fuel oil are sprayed from nozzle (2)；
S5: as I > I2When, second the first valve body of valve body acceleration ratio (1) fastly, i.e. the first oil duct interface (7) and the first oil input channel
(6) scram and the second oil duct interface (13) and the second oil input channel (12) are quickly opened, and the first valve body of fuel injector (1) is complete
Before opening, the second oil duct fuel oil is wholly converted by the first oil duct fuel oil in mixing chamber (9), i.e. the second oil duct fuel oil is from nozzle
(2) it sprays.
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| WO2022248916A1 (en) * | 2021-05-26 | 2022-12-01 | ESPINOSA LOAIZA, Juan Carlos | Device for mixing fuels with dual injectors in combustion engines |
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| CN110307110B (en) * | 2019-06-26 | 2021-07-23 | 河南美力达汽车有限公司 | Main and auxiliary integrated nonlinear correction oil sprayer |
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| DE3021974A1 (en) * | 1980-06-12 | 1981-12-24 | Motoren-Werke Mannheim AG, vorm. Benz Abt. stat. Motorenbau, 6800 Mannheim | Dual fuel IC engine - uses poor ignition quality fuel with improving additive as ignition fuel |
| CA2633846C (en) * | 2008-06-27 | 2009-12-29 | Westport Power Inc. | Fuel injection valve and method for co-injecting a liquid and a gaseous fuel into the combustion chamber of an internal combustion engine |
| CA2743043C (en) * | 2011-06-14 | 2012-09-18 | Westport Power Inc. | Dual fuel injection valve |
| CN103244322B (en) * | 2013-04-28 | 2015-03-11 | 哈尔滨工程大学 | Dual-fuel electromagnetic and piezoelectric control type injector |
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| WO2022248916A1 (en) * | 2021-05-26 | 2022-12-01 | ESPINOSA LOAIZA, Juan Carlos | Device for mixing fuels with dual injectors in combustion engines |
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