CN106958501B - A kind of biliquid direct-injection nozzle - Google Patents
A kind of biliquid direct-injection nozzle Download PDFInfo
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- CN106958501B CN106958501B CN201710102324.XA CN201710102324A CN106958501B CN 106958501 B CN106958501 B CN 106958501B CN 201710102324 A CN201710102324 A CN 201710102324A CN 106958501 B CN106958501 B CN 106958501B
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- Prior art keywords
- valve
- needle
- input channel
- casing
- oil input
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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
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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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
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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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The present invention relates to a kind of biliquid direct-injection nozzles, including shell, first oil input channel, second oil input channel, first spray orifice, casing is equipped in shell, the first injection unit is arranged in casing part, the second injection unit is arranged in inside pipe casing, first injection unit includes the first needle-valve and the first needle valve movement component, second injection unit includes the second needle-valve and the second needle valve movement component, first needle-valve lower end is conical surface valve seat, first spray orifice is equipped with and the matched inner conical surface of conical surface valve seat, the second spray orifice is equipped among conical surface valve seat, the valve stem end of second needle-valve is connected with and the matched steel ball of the second spray orifice.Compared with prior art, two sets of injection control units are arranged in the present invention, two kinds of liquid injections in engine cylinder are realized using a nozzle, and the injection of two kinds of liquid is respectively independent, it does not interfere with each other, the arrangement space of nozzle is greatlyd save, provides the nozzle of needs for advanced engine technologies such as double fuel combined burning, engine in-cylinder water injections.
Description
Technical field
The invention belongs to technical field of internal combustion engines, and in particular to a kind of biliquid direct-injection nozzle.
Background technique
The stable development of Global Auto industry in recent years, Chinese Automobile Industry ' are even more to have obtained quick development.From 2009
Start, China just becomes the big automobile production state of the first in the world and country of consumption.The development of auto industry brings pole to people's lives
Big convenience, while driving the industries such as upstream and downstream steel, petroleum is that country creates huge economic interests.But automobile work
The fast development of industry also results in the problems such as energy shortage, environmental pollution, especially recently as environmental problems such as hazes
It gets worse, environmental protection causes more and more social concerns and attention.Power resources of the internal combustion engine as automobile, development
Direction is also to be unfolded around energy-saving and emission-reduction.
Internal combustion engine industry has been devoted to improve the efficiency of internal combustion engine, reduces engine exhaust, realizes high-efficiency cleaning burning.For
The dependence to petroleum is got rid of, researcher attempts to find the alternative fuel of high-efficiency cleaning, such as bio-fuel, Aalcohols fuel, but
It is that deficiency is also all individually present in these alternative fuel, existing petrol and diesel oil can not be substituted completely, in recent years some scholars and research
Mechanism proposes double fuel combined burning technology, is burnt using two kinds of fuel fabrications, makes full use of the characteristic that different fuel is different,
Improve the combustion emissions characteristics of internal combustion engine in conjunction with different injection strategy and combustion method etc., realizes that the efficiency of internal combustion engine improves
It is reduced with discharge.
Also start to rise using the correlative study of water-jet technology on internal combustion engine at present.Water absorbs heat steaming in engine cylinder
Hair, can reduce engine cylinder temperature, effectively inhibit the generation of pinking, reduce discharged nitrous oxides.Simultaneously because water spray drop
Low pinking tendency, can increase engine compression ratio, advanced ignition advance angle, avoid oil spout enriching in high load working condition, improve
Engine efficiency.Aachen University, Germany, sophisticated technologies institute, South Korea, Osaka, Japan university, Bayerische Motorne Werke Aktiengeellschaft, Modern Corporation, Toyota
Company etc. has all carried out the research that engine in-cylinder water injection inhibits pinking, improves engine efficiency, reduces discharged nitrous oxides.
In double fuel combined burning and engine cylinder water-jet technology require to realize in engine cylinder two kinds of liquid fuels (or
Water) injection, however mostly structure is complicated, characteristics of compact layout for modern advanced gasoline engine cylinder cover, is difficult to be simutaneously arranged two on cylinder cap
Direct-injection nozzle guarantees that it is spraying non-interference, it is therefore desirable to which a direct-injection nozzle can be realized simultaneously two kinds of liquid injections, simultaneously
Guarantee that two kinds of liquid injections are not interfere with each other.
Application No. is 200510017269.1 Chinese patents to disclose a kind of double-liquid nozzle, by needle-valve, valve pocket and sets
It is made of the valve body of spray orifice, valve pocket is housed between needle-valve and valve body, mated pair each other between three parts, the male cone (strobilus masculinus) of sleeving valve
It is landed on the inner conical surface of valve body, constitutes first valve, the conical surface of needle-valve and the inner conical surface of sleeving valve constitute second valve, needle
A pressure chamber, the first ring-like chamber, the second ring-like chamber are formed respectively between valve, valve pocket and valve body different location, are set on valve body
The second channel for having the first passage communicated with the first ring-like chamber and communicating with the second ring-like chamber, the patent are for existing diesel oil
Nozzle arrangements transformation can spray biliquid, and opening for needle-valve is the hydraulic action upward by highly pressurised liquid, overcome bullet
The resistances such as spring pretightning force open needle-valve, and two kinds of liquid needle-valves open upwards.
Summary of the invention
The purpose of the present invention is to solve the above-mentioned problems and provides a kind of biliquid direct-injection nozzle, can be realized two kinds
Liquid injection, and do not interfere with each other when two kinds of liquid injections.
The purpose of the present invention is achieved through the following technical solutions:
A kind of biliquid direct-injection nozzle, including the shell being made of upper housing and lower case, the upper part of the housing is equipped with
First oil input channel and the second oil input channel, the housing bottom are equipped with the first spray orifice, and casing is equipped in the shell, described
Sleeve upper end and the second oil input channel are tightly connected, and the first injection of casing part setting control the first oil input channel injection is single
Member, the second injection unit of inside pipe casing setting control the second oil input channel injection, first injection unit include
First needle-valve and the first needle valve movement component, second injection unit include the second needle-valve and the second needle valve movement group
Part, the lower end and the first needle valve body are tightly connected, outside the inner walls and the second oil inlet pipeline outer wall, casing
The first oil suction chamber of gap formation between wall and the first injection unit outer wall, the second oil input channel inner wall and internal surface of sleeve pipe,
Gap between second injection unit outer wall and the first needle-valve inner cavity forms the second oil suction chamber, the first oil input channel connection the
One oil suction chamber, second oil input channel are connected to the second oil suction chamber, and the first needle-valve lower end is conical surface valve seat, and described the
One spray orifice, which is equipped with, is equipped with the second spray orifice, second needle with the matched inner conical surface of conical surface valve seat, the conical surface valve seat centre
The valve stem end of valve is connected with and the matched steel ball of the second spray orifice.
Said nozzle specific work process are as follows: the first oil input channel and the second oil input channel respectively enter different injection liquid,
The injection liquid that first oil input channel enters flows through the first oil suction chamber and most sprays afterwards through the first spray orifice, and the first needle valve movement component passes through
Control the open and close control course of injection of conical surface valve seat and the first spray orifice；The injection liquid that second oil input channel enters flows through the second oil inlet
Chamber is most sprayed through the second spray orifice afterwards, and the second needle valve movement component was sprayed by the open and close control of control steel ball and the second spray orifice
Journey.
Further, the first needle valve movement component and the second needle valve movement component by armature, return spring and
Electromagnetic coil composition, the armature and return spring are arranged on valve rod by limit lantern ring, the electromagnetic coil setting
On the inner wall of the housing or internal surface of sleeve pipe, concrete operating principle are, in the first needle valve movement component, the first needle-valve by return spring to
On the effect of elastic force pretightning force, the conical surface valve seat of lower part is pressed on the inner conical surface of the first spray orifice, and liquid does not spray；Work as electromagnetism
When coil is powered, iron core generates attraction to armature, when electromagnetic attraction is greater than the resistances such as pretightning force of return spring, armature to
Lower movement drives the first needle-valve to move downward, and conical surface valve seat is separated with the inner conical surface of the first spray orifice, high-pressure liquid jet；Second
In needle valve movement component, limited above return spring by limit lantern ring, lower section is limited by limit lantern ring, the downward bullet of return spring
Power pretightning force compresses the valve rod of the second needle-valve, and steel ball is pressed on the second spray orifice by valve rod, after electromagnetic coil is powered, iron core pair
Armature generates electromagnetic attraction, and when electromagnetic attraction is greater than the resistances such as the pretightning force of return spring, needle-valve is picked up, and steel ball leaves
Valve seat, high-pressure liquid jet.
Further, the electromagnetic coil is connected to the harness connector plug set on hull outside by conducting wire.
Further, the casing part is fixed together with the first needle-valve by screw thread, with opening for the first needle-valve
Up and down motion is closed, when the first needle-valve opens downwards, casing moves downwardly together therewith, and fixing sleeve is arranged in the outside on casing top
Ring, the retaining collar are immobilized in the shell wall, and retaining collar is equipped with the channel being connected to the first oil suction chamber, and retaining collar is solid
Fix the electromagnetic coil of portion's the first needle valve movement component.
Further, the lower surface of second oil input channel is equipped with seal boss, is equipped with sealing ring in the casing,
The sealing ring is equipped with the groove cooperated with seal boss, and casing part connect sealing with the first needle-valve by screw thread, guarantees
First oil suction chamber and the second oil suction chamber No leakage, liquid do not blend.
Further, first oil input channel is set to the side of upper housing, and second oil input channel is set to upper housing
Top, first oil input channel each leads into different injection liquid from the second oil input channel.
Further, the conical surface valve seat of the first needle-valve lower end is the cone that diameter increases from top to bottom.
Compared with prior art, the present invention can spray biliquid, needle-valve for the transformation of existing gasoline GDI nozzle arrangements
It opens through solenoid valve control, the suction of electromagnet directly overcomes initial tension of spring, needle-valve is opened upward or downward, the first needle
Valve opens downwards, and the second needle-valve opens upwards, and two needle-valves open direction difference；The needle-valve of regular gasoline GDI nozzle is upward
It opening, the first needle-valve of the invention opens downwards, and gap of the highly pressurised liquid between face of needle seating and spray orifice inner conical surface sprays, due to
Largely spraying partial size is smaller than or is approximately equal to the distance in gap, face of needle seating and spray orifice inner cone when the first needle-valve opens
Clearance distance determines that first accurately controls needle-valve by designing needle valve assembly stroke with the partial size of liquid spray between face
Clearance distance between the conical surface and spray orifice inner conical surface when opening downwards, control injection liquid partial size, controls fogging degree, injection control
Component is made of armature, return spring and electromagnetic coil, directly controls course of injection, and control is accurate, is quick on the draw.
Two sets of injection control units are arranged in the present invention, realize two kinds of liquid injections in engine cylinder using a nozzle, and
The injection of two kinds of liquid is respectively independent, does not interfere with each other, greatlys save the arrangement space of nozzle, for double fuel combined burning, starts
The advanced engine technology such as machine in-cylinder water injection provides the nozzle needed.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
In figure: 1- upper housing；2- lower case；The first oil input channel of 3-；The second oil input channel of 4-；The first spray orifice of 5-；6- casing；7-
First needle-valve；The second needle-valve of 8-；9- conical surface valve seat；The second spray orifice of 10-；11- steel ball；12- armature；13- return spring；14- electricity
Magnetic coil；15- limits lantern ring；16- conducting wire；17- harness connector plug；18- retaining collar；19- sealing ring.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of biliquid direct-injection nozzle, as shown in Figure 1, including upper housing 1, lower case 2,3 second oil inlet of the first oil input channel
Road 4, the first spray orifice 5, casing 6, the first needle-valve 7, the second needle-valve 8, conical surface valve seat 9, the second spray orifice 10, steel ball 11, armature 12 return
Position spring 13, electromagnetic coil 14 limit lantern ring 15, conducting wire 16, harness connector plug 17, retaining collar 18, sealing ring 19.
Upper housing 1 and lower case 2 form shell, and upper part of the housing is equipped with the first oil input channel 3 and the second oil input channel 4, shell bottom
Portion is equipped with the first spray orifice 5, and casing 6 is equipped in shell, and 6 upper end of casing and the second oil input channel 4 are tightly connected, the setting of 6 lower part of casing
The first injection unit of the first oil input channel 3 injection is controlled, the second injection of setting control the second oil input channel 4 injection inside casing 6
Unit, the first injection unit include the first needle-valve 7 and the first needle valve movement component, and the second injection unit includes the second needle-valve 8
And the second needle valve movement component, 6 lower end of casing are connect with 7 valve seal of the first needle-valve, the first needle valve movement component and second
Needle valve movement component is made of armature 12, return spring 13 and electromagnetic coil 14, and electromagnetic coil 14 is connected to by conducting wire 16
Set on the harness connector plug 17 of hull outside, 6 top of casing is connect by retaining collar 18 with shell, and retaining collar 18 is equipped with the
The channel of one oil suction chamber connection, the first oil input channel 3 are set to the side of upper housing 1, and the second oil input channel 4 is set to the top of upper housing 1.
The first liquid is flowed into from the first oil input channel 3, flows through the channel on retaining collar 18, is full of inner walls and second
Gap between 7 outer wall of 4 outer wall of oil input channel, 6 outer wall of casing and the first needle-valve forms the first oil suction chamber, and 7 lower part of the first needle-valve is
The conical surface of external-open cooperates with the first spray orifice 5, and limit lantern ring 15 is fixed on valve rod of needle valve, and about 12 armature is limited by limit lantern ring
Position, is also secured on valve rod, and 13 lower end of return spring is limited by 2 inner wall of lower case, and upper end is limited by limit lantern ring 15, electromagnetic wire
It encloses 14 lower ends to be positioned by 2 inner wall of lower case, upper end is positioned by limit lantern ring 12, and 7 top of the first needle-valve and casing 6 are connected by screw thread
Connecing sealing, when electromagnetic coil no power, the upward initial tension of spring of return spring 13 compresses the first needle-valve 7 and casing 6 upwards,
The male cone (strobilus masculinus) of lower part and 5 inner conical surface of the first spray orifice of lower case 2 compress, and form conical surface seal, the first liquid does not spray；Work as electricity
When magnetic coil 14 is powered, iron core generates electromagnetic attraction to armature 12, overcomes the resistances such as the initial tension of spring of return spring 13, downwards
Movement, the first needle-valve 7 open, and gap of the first liquid between 7 conical surface of the first needle-valve and the first spray orifice 5 sprays, and pass through essence
Really design needle valve assembly stroke, when controllable needle-valve opens downwards between the needle-valve lower seal conical surface and spray orifice inner conical surface gap away from
From control injection liquid partial size controls fogging degree.
Second of liquid is flowed into from the second oil input channel 4, full of 4 inner wall of the second oil input channel and 6 inner wall of casing and the first needle-valve 7
Gap between inner cavity forms the second oil suction chamber, and the lower end surface of the second oil input channel 4 is equipped with boss, and the upper surface of sealing ring 19 is equipped with
Groove, the two cooperate, and form sealing, and 14 lower end of electromagnetic coil is limited by the step of internal surface of sleeve pipe, 13 lower end of return spring
It being positioned by limit lantern ring 15, upper end is positioned by sealing ring 19, when electromagnetic coil no power, the downward elastic compression of return spring
Steel ball 11 is pressed on the second spray orifice 10 of lower tapered surface valve seat 9 by the valve rod of two needle-valves 8, valve rod, and second of liquid does not spray,
When electromagnetic coil 14 is powered, iron core generates electromagnetic attraction to armature, overcomes the resistances such as the initial tension of spring of return spring, attracts
Needle valve movement component moves upwards, and steel ball is lifted off a seat, and second of liquid is sprayed through the second spray orifice 10.
Claims (8)
1. a kind of biliquid direct-injection nozzle, including the shell being made of upper housing (1) and lower case (2), the upper part of the housing
Equipped with the first oil input channel (3) and the second oil input channel (4), the housing bottom is equipped with the first spray orifice (5),
It is characterized in that, being equipped with casing (6) in the shell, the casing (6) upper end and the second oil input channel (4) sealing connect
It connects, the first injection unit of the casing (6) lower part setting control the first oil input channel (3) injection, the casing (6) is internal
Be arranged control the second oil input channel (4) injection the second injection unit, first injection unit include the first needle-valve (7) and
First needle valve movement component, second injection unit includes the second needle-valve (8) and the second needle valve movement component, described
Casing (6) lower end is connect with the first needle-valve (7) valve seal,
Gap between the inner walls and the second oil input channel (4) outer wall, casing (6) outer wall and the first injection unit outer wall
Form the first oil suction chamber, the second oil input channel (4) inner wall and casing (6) inner wall, the second injection unit outer wall and the first needle
Gap between valve (7) inner cavity forms the second oil suction chamber, and first oil input channel (3) is connected to the first oil suction chamber, and described the
Two oil input channels (4) are connected to the second oil suction chamber, and the first needle-valve (7) lower end is conical surface valve seat (9), first spray orifice
(5) be equipped with conical surface valve seat (9) matched inner conical surface, be equipped with the second spray orifice (10) among the conical surface valve seat (9), it is described
The valve stem end of second needle-valve (8) is connected with and the second spray orifice (10) matched steel ball (11).
2. a kind of biliquid direct-injection nozzle according to claim 1, which is characterized in that the first needle valve movement component
It is made of with the second needle valve movement component armature (12), return spring (13) and electromagnetic coil (14), the armature (12)
With return spring (13) by limit lantern ring (15) be arranged on valve rod, the electromagnetic coil (14) setting on the inner wall of the housing or
Casing (6) inner wall.
3. a kind of biliquid direct-injection nozzle according to claim 2, which is characterized in that the electromagnetic coil (14) passes through
Conducting wire (16) is connected to the harness connector plug (17) set on hull outside.
4. a kind of biliquid direct-injection nozzle according to claim 1, which is characterized in that casing (6) lower part and the
One needle-valve (7) is fixed together by screw thread, as the opening and closing of the first needle-valve (7) moves up and down, is set on the outside of casing (6) top
Set retaining collar (18).
5. a kind of biliquid direct-injection nozzle according to claim 4, which is characterized in that the retaining collar (18) is fixed
On the inner wall of the housing, retaining collar (18) is equipped with the channel being connected to the first oil suction chamber.
6. a kind of biliquid direct-injection nozzle according to claim 1, which is characterized in that second oil input channel (4)
Lower surface is equipped with seal boss, is equipped with sealing ring (19) in the casing (6), the sealing ring (19) is equipped with convex with sealing
The groove of platform cooperation.
7. a kind of biliquid direct-injection nozzle according to claim 1, which is characterized in that first oil input channel (3) is set
In the side of upper housing (1), second oil input channel (4) is set to the top of upper housing (1), first oil input channel (3)
Different injection liquid are each led into from the second oil input channel (4).
8. a kind of biliquid direct-injection nozzle according to claim 1, which is characterized in that described the first needle-valve (7) lower end
Conical surface valve seat (9) be from top to bottom diameter increase cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710102324.XA CN106958501B (en) | 2017-02-24 | 2017-02-24 | A kind of biliquid direct-injection nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710102324.XA CN106958501B (en) | 2017-02-24 | 2017-02-24 | A kind of biliquid direct-injection nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106958501A CN106958501A (en) | 2017-07-18 |
| CN106958501B true CN106958501B (en) | 2019-05-14 |
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ID=59481019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710102324.XA Active CN106958501B (en) | 2017-02-24 | 2017-02-24 | A kind of biliquid direct-injection nozzle |
Country Status (1)
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| CN (1) | CN106958501B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK0546985T3 (en) * | 1991-12-10 | 1999-10-11 | New Sulzer Diesel France Sa | Fuel injection valve for a piston combustion engine for operation of choice with diesel fuel or with a gaseous fuel |
| US8523090B2 (en) * | 2009-12-23 | 2013-09-03 | Caterpillar Inc. | Fuel injection systems and armature housings |
| US8733326B2 (en) * | 2011-06-24 | 2014-05-27 | Caterpillar Inc. | Dual fuel injector for a common rail system |
| US20140069387A1 (en) * | 2012-09-07 | 2014-03-13 | Caterpillar Inc. | Dual fuel injector and common rail fuel system using same |
| CN204783400U (en) * | 2015-07-09 | 2015-11-18 | 胡松平 | Integral type electrically activated injector |
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2017
- 2017-02-24 CN CN201710102324.XA patent/CN106958501B/en active Active
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| Publication number | Publication date |
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| CN106958501A (en) | 2017-07-18 |
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