CN203822513U - Improved fuel injector - Google Patents
Improved fuel injector Download PDFInfo
- Publication number
- CN203822513U CN203822513U CN201420161088.0U CN201420161088U CN203822513U CN 203822513 U CN203822513 U CN 203822513U CN 201420161088 U CN201420161088 U CN 201420161088U CN 203822513 U CN203822513 U CN 203822513U
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- valve body
- oil
- valve
- described needle
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- 239000000446 fuel Substances 0.000 title claims abstract description 45
- 238000002347 injection Methods 0.000 claims description 23
- 239000007924 injection Substances 0.000 claims description 23
- 235000003140 Panax quinquefolius Nutrition 0.000 claims description 20
- 240000005373 Panax quinquefolius Species 0.000 claims description 20
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 238000010030 laminating Methods 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 abstract description 8
- 239000003921 oil Substances 0.000 description 82
- 238000001816 cooling Methods 0.000 description 12
- 230000008878 coupling Effects 0.000 description 8
- 238000010168 coupling process Methods 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 8
- 239000000295 fuel oil Substances 0.000 description 8
- 230000003116 impacting effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model discloses an improved fuel injector which comprises a needle valve, a needle valve body, a fastening screw cap and a fuel accommodating cavity, wherein the needle valve is arranged in the needle valve body, and the fuel accommodating cavity is formed between the needle valve and the needle valve body; two fuel inlet channels are further formed in the needle valve body, one end of each fuel inlet channel is communicated with the fuel accommodating cavity, and two fuel inlet holes are formed in the upper surface of the needle valve body at the other ends of the fuel inlet channels; and the two fuel inlet channels are symmetrically formed around the medial axis of the needle valve body. The improved fuel injector is easy to implement, radial friction force borne by fuel injector needle valve matching parts can be effectively reduced, and the movement stability of the needle valve can be improved.
Description
Technical field
The utility model relates to fuel injection system, relates in particular to a kind of improved oil sprayer.
Background technique
Diesel engine high-pressure co-rail spraying technique is current raising diesel engine performance and the effective measures that reduce discharge.Diesel engine high-pressure co-rail system has that injection pressure flexibility is adjustable, injection timing, control flexibly and the feature such as fuel injection quantity free adjustment, can effectively reduce engine fuel consumption and discharge and improve power character.High pressure common rail electric control fuel injector is the core key part of high pressure co-rail system, and its structural parameter and performance directly have influence on the service behaviours such as the speed of response, injection rate, reliability of whole high pressure co-rail system.
Existing high pressure common rail electric control fuel injector is mainly made up of needle-valve body, needle-valve, fastening nut, control plunger, control plunger bushing, orifice plate, armature, armature guide way, oil injector body etc.Needle-valve is arranged in needle-valve body; Fastening nut is fastened together needle-valve body, oil injector body, controls plunger, control plunger bushing, orifice plate, armature, armature guide way etc. and is installed in oil injector body.Orifice plate is provided with oil-feed metering-orifice and fuel-displaced metering-orifice, and the aperture of oil-feed metering-orifice is less than the aperture of fuel-displaced metering-orifice.
The groundwork process of existing high pressure common rail electric control fuel injector is:
High pressure fuel is divided into two-way after entering electric-controlled fuel injector by common rail pipe, and a road flows to the control chamber of controlling plunger place; Another road flows to the Sheng oil pocket at needle-valve place.In the time of solenoid valve dead, armature is pressed on valve seat by armature spring.Control chamber and Sheng oil pocket are communicated with, and internal pressure is equal, and control chamber inner high voltage fuel oil produces a downward fuel oil hydraulic coupling to controlling plunger.In Sheng oil pocket, high pressure fuel produces a fuel oil hydraulic coupling upwards to needle-valve, and downward hydraulic coupling is greater than hydraulic coupling upwards.In addition, the downward impacting force of return spring is also born in needle-valve top, causes needle-valve to be pressed on above needle valve seat, not oil spout of electric-controlled fuel injector.
In the time that ECU (Electrical Control Unit) encourages to solenoid valve, electromagnetic force drives armature to rise, the ball valve of orifice plate top is opened, because the aperture of the oil-feed metering-orifice of orifice plate is less than the aperture of fuel-displaced metering-orifice, pressure in control chamber declines rapidly, control chamber inner high voltage fuel oil reduces rapidly the downward fuel oil hydraulic coupling of controlling plunger, and the pressure reduction of generation causes needle-valve to start to move upward, fuel injection beginning.When end of injection, solenoid valve power-off, armature starts to take a seat under the effect of return spring, oil pump capacity bore closure, fuel oil is by oil-feed metering-orifice to oil-filled in control chamber, and control chamber internal pressure starts to rise, and high pressure re-establishes.In the time that the fuel oil hydraulic coupling producing in control chamber and needle-valve return spring elastic force sum are greater than the fuel oil hydraulic coupling upwards of containing that oil pocket produces, control plunger and move downward together with starting with needle-valve, until needle-valve takes a seat, end of injection.
Can see, high pressure common rail electric control fuel injector is in work engineering, and needle-valve is controlled chamber and contains the acting in conjunction of multiple complex external forces such as the interior hydraulic coupling of oil pocket, spring force, couple gap frictional force; In addition, the parts such as needle-valve body, oil injector body are pressed on oil injector body by the screw thread power between fastening nut and oil injector body, and needle-valve body is also subject to the fastening nut impacting force etc. producing that is threaded with oil injector body simultaneously.In general, high pressure common rail electric control fuel injector will be realized injection control accurate, stable under high pressure, the stability of motions of needle-valve is most important, and under above-mentioned multiple External Force Acting, needle-valve body inner chamber can produce distortion, thereby the radial friction that strengthens needle-valve body and needle-valve, affects electric-controlled fuel injector performance.
Therefore, those skilled in the art is devoted to develop a kind of high pressure common rail electric control fuel injector, can effectively reduce the suffered radial frictional force of electric-controlled fuel injector pintle nozzle match-ing parts, improves the stability of motions of needle-valve.
Model utility content
Because the above-mentioned defect of prior art, technical problem to be solved in the utility model is to provide a kind of improved oil sprayer, can effectively reduce the suffered radial frictional force of Performance of Fuel Injection Nozzle, improves the stability of motions of needle-valve.
For achieving the above object, first aspect of the present invention, provides a kind of oil sprayer, comprises needle-valve, needle-valve body, fastening nut and Sheng oil pocket; Described needle-valve and described needle-valve body form pintle nozzle match-ing parts, and described needle-valve is arranged in described needle-valve body, and described Sheng oil pocket is arranged between described needle-valve and described needle-valve body; In described needle-valve body, be also provided with two oil-feed oil ducts, one end of described two oil-feed oil ducts is connected with described Sheng oil pocket, and the other end of described two oil-feed oil ducts forms two oil-feed oilholes at the upper surface of described needle-valve body; The medial axis of described two relatively described needle-valve bodies of oil-feed oil duct is arranged symmetrically with; Described needle-valve body has supporting surface, and described fastening nut has bump; The annular upper surface laminating of the annular lower surface of the supporting surface of described needle-valve body and the bump of fastening nut, forms matching trim; The plane at the end face place of described Sheng oil pocket is not less than the described matching trim of described needle-valve body and the formation of described fastening nut.
Further, the upper surface of described needle-valve body is provided with two positioning pin holes vertically vertically downward; The medial axis of described two relatively described needle-valve bodies of positioning pin hole is arranged symmetrically with.
Preferably, described two positioning pin holes are evenly arranged with the medial axis of described two relative described needle-valve bodies of oil-feed oil duct.
Further, the degree of depth that described positioning pin hole extends along the axial direction of described needle-valve body is no more than the plane at the sealing surface place of described needle-valve body and the formation of described fastening nut.
Preferably, be located at the plane at the sealing surface place forming with described needle-valve body and described fastening nut at the bottom of the axial hole of the described positioning pin hole of described needle-valve body coplanar.
Further, the plane at the end face place of described Sheng oil pocket is higher than at least twice needle-valve guiding diameter of described matching trim of described needle-valve body and the formation of described fastening nut.
Wherein, described needle-valve guiding diameter and needle-valve body mesopore guiding equal diameters.
Alternatively, the fitting surface place between described needle-valve and the described needle-valve body below described Sheng oil pocket, is provided with radial clearance.
Further, described radial clearance is 0.3～2mm.
Alternatively, the fitting surface place between needle-valve and the needle-valve body of top face of containing oil pocket, is provided with radial clearance.
Further, the width of radial clearance is 0.1～3mm, and the height of radial clearance is 0.5～8mm.
Aspect second of the present invention, a kind of high pressure common rail electric control fuel injector is provided, comprise the oil sprayer described in first aspect of the present invention.
Aspect the 3rd of the present invention, a kind of hydraulic injection device is also provided, comprise the oil sprayer described in first aspect of the present invention.
As can be seen here, the utlity model has following technique effect:
1, the layout symmetrically and evenly of positioning pin hole of the present invention and two the relative needle-valve body of oil-feed oilhole medial axis, can effectively improve the symmetry properties of needle valve structure, the precision-fit section that makes needle-valve body and needle-valve assymmetrical deformation under external force reduces, and then the radial frictional force that ensures needle-valve and needle-valve body reduces, the precision and stability of raising Performance of Fuel Injection Nozzle.
2, positioning pin hole of the present invention digs deep hole along extending axially under direction of needle-valve body, can further improve the symmetry properties of needle valve structure, thereby further improves the precision and stability of Performance of Fuel Injection Nozzle.
3, the position of Sheng oil pocket of the present invention is higher than the matching trim of needle-valve body and fastening nut formation, can effectively reduce the mesopore amount of deformation of the needle-valve body that is positioned at matching trim top, and then reduce the suffered radial frictional force of Performance of Fuel Injection Nozzle, improve the stability of motions of needle-valve.
4, oil sprayer of the present invention is easy to realize, and is applicable to high pressure common rail electric control fuel injector and hydraulic injection device, has universality.
Below with reference to accompanying drawing, the technique effect of design of the present utility model, concrete structure and generation is described further, to understand fully the purpose of this utility model, feature and effect.
Brief description of the drawings
Fig. 1 is the structure diagram of the oil sprayer of a kind of preferred embodiment of the present utility model;
Fig. 2 is the partial enlarged drawing of oil sprayer in Fig. 1;
Fig. 3 is the needle-valve body of another kind of preferred embodiment of the present utility model and the plan view of needle-valve assemblying body;
Fig. 4 is the needle-valve body of another kind of preferred embodiment of the present utility model and the partial sectional view of needle-valve assemblying body.
Embodiment
As depicted in figs. 1 and 2, a kind of oil sprayer, comprises needle-valve 1, needle-valve body 2, fastening nut 3 and contains oil pocket 4 etc.Needle-valve 1, needle-valve body 2 form pintle nozzle match-ing parts, needle-valve 1 is arranged in needle-valve body 2 by precision-fit, needle-valve body 2 has supporting surface 201, fastening nut 3 has bump 301, the annular upper surface laminating of the annular lower surface of the supporting surface 201 of needle-valve body 2 and the bump of fastening nut 3, forms matching trim.Containing oil pocket 4 is arranged between needle-valve 1 and needle-valve body 2.The plane at the sealing surface place that the bump 301 of the supporting surface of needle-valve body 2 201 and fastening nut 3 is formed is set as L1, and the end face place plane of containing oil pocket 4 is set as to L2.
In conjunction with Fig. 3 and Fig. 4, on needle-valve body 2, be provided with two symmetrical positioning pin holes 21 and two symmetrical oil-feed oil ducts 23.Referring to Fig. 3, the one end that is positioned at the oil-feed oil duct 23 of needle-valve body 2 is connected with Sheng oil pocket 4, and the other end forms two oil-feed oilholes 31 at the upper surface of needle-valve body 2.Referring to Fig. 4, the upper surface that positioning pin hole 21 is located at needle-valve body 2 vertically downward vertically.Different from asymmetric arrangement of the prior art, the central axis of two positioning pin hole 21 relative needle-valve bodies 2 is arranged symmetrically with, two oil-feed oil ducts 23 also relatively the central axis of needle-valve body 2 be arranged symmetrically with, two positioning pin holes 21 are evenly arranged with the central axis of two oil-feed oilhole 31 relative needle-valve bodies.
The layout symmetrically and evenly of two positioning pin holes 21 and two the relative needle-valve body of oil-feed oilhole 31 2 medial axis, can effectively improve the symmetry properties of needle-valve body 2 structures, the precision-fit section that makes needle-valve body 2 and needle-valve 1 assymmetrical deformation under the screw thread impacting force of fastening nut 3 and other External Force Actings reduces, and then ensure that needle-valve 1 and the radial frictional force of needle-valve body 2 reduce, and improve the precision and stability of Performance of Fuel Injection Nozzle.
As shown in Figure 4, positioning pin hole 21 digs deep hole along extending axially under direction of needle-valve body 2, is no more than the plane that coordinates of needle-valve body 2 and fastening nut 3 at the bottom of the hole of positioning pin hole 21.Preferably, it is coplanar that positioning pin hole 21 is located at the plane at the sealing surface place that the axial base plane of needle-valve body 2 and needle-valve body 2 and fastening nut 3 form.Thereby further improve the symmetry properties of needle-valve body 2 structures, the fitting surface that reduces needle-valve body 2 and needle-valve 1 assymmetrical deformation and frictional force of causing under the screw thread impacting force of fastening nut 3 and other External Force Actings.
Alternatively, in the oil sprayer of the present embodiment, also be provided with the plane L1 at the sealing surface place that the plane L2 at the end face place in the case of containing oil pocket 4 do not form higher than needle-valve body 2 and fastening nut 3, make to contain oil pocket 4 and approach the sealing surface that needle-valve body 2 and fastening nut 3 form as far as possible.The plane L1 at the sealing surface place that preferably, the plane L2 at the end face place of Sheng oil pocket 4 can form with needle-valve body 2 and fastening nut 3 is coplanar.
Further, inventor is in the time that the installation for oil sprayer is fixing, the plane L1 that finds sealing surface place is subject to active force upwards, this active force make needle-valve body mesopore guide section at plane L1 the trend with the oriented interior contraction in upper part, this deformation tendency can cause the gap between needle-valve body mesopore and needle-valve to have the trend of dwindling, thereby cause pintle nozzle match-ing parts sliding not good (motion retardance), cause spraying control characteristic unstable.The impact bringing in order to reduce this distortion, inventor further proposes, and the plane at the end face place of Sheng oil pocket is higher than the matching trim of needle-valve body and fastening nut formation.Preferably, the plane at the end face place of Sheng oil pocket is higher than at least twice needle-valve guiding diameter of matching trim of needle-valve body and fastening nut formation; Make needle-valve body guide section away from stress area, mesopore amount of deformation reduces, thereby the impact of sliding is also reduced.
Wherein, needle-valve guiding diameter and needle-valve body mesopore guiding equal diameters.Thus, oil sprayer of the present utility model is contained the symmetrical of the position of oil pocket 4 and positioning pin hole 21 and oil-feed oil duct 23 by arranging, and ensures that needle-valve body 2 and needle-valve 1 precision-fit section are not affected by external force, the needle-valve body 2 inner chambers distortion of avoiding external force to bring; And the symmetry properties of raising needle-valve body 2 structures, needle-valve body 2 reduces with fitting surface assymmetrical deformation under screw thread impacting force and other External Force Actings of needle-valve 1; Effectively reduce the suffered radial frictional force of Performance of Fuel Injection Nozzle thereby realize, improve the precision and stability that needle-valve 1 moves.Simple in structure, be easy to realize, there is good using value.
Alternatively, the fitting surface place between needle-valve and the needle-valve body of top face of containing oil pocket, is provided with radial clearance.The width of radial clearance is 0.1～3mm, and the height of radial clearance is 0.5～8mm.Fitting surface place between the needle-valve and the needle-valve body that are positioned at (near spray orifice one end) below the bottom surface of containing oil pocket, is provided with radial clearance.Radial clearance (width) is 0.3～2mm.
Wherein, the width direction of radial clearance is the direction perpendicular to needle-valve medial axis, and the height of radial clearance is the direction that is parallel to needle-valve medial axis.
Compared with prior art, the needle-valve body and the needle-valve precision-fit section that are positioned at Sheng oil pocket top face and/or below, bottom surface are provided with radial clearance, the radial frictional force that can avoid the Performance of Fuel Injection Nozzle of the radial deformation introducing of needle-valve or needle-valve body, improves precision and the stability of motions of the control of needle-valve.
In addition, the oil sprayer providing in the present embodiment can also comprise two cooling oil ducts and be arranged on the cooling oil chamber in needle-valve body 2, cold oil enters in cooling oil chamber through armature guide way, control plunger bushing, needle-valve body 2 successively along the first cooling oil duct, after half circumference circulation of the cooling oil chamber in needle-valve body 2, turn back to the cooling oil duct on oil injector body through needle-valve body 2, control plunger bushing and armature guide way successively along the second cooling oil duct, realize a cold oil cycle period.Two cooling oil ducts that are positioned at needle-valve body 2, its one end is connected with cooling oil chamber, and the other end forms two cooling oilholes at the upper surface of needle-valve body 2.
The central axis of two positioning pin hole 21 relative needle-valve bodies 2 is arranged symmetrically with, two oil-feed oil ducts 23 also relatively the central axis of needle-valve body 2 be arranged symmetrically with, two the relative needle-valve body of cooling oil duct medial axis are arranged symmetrically with.In addition, two positioning pin holes 21 are evenly arranged with the central axis of two relative needle-valve bodies 2 of cooling oilhole with two oil-feed oilholes 31.Thus, further improve the symmetry properties of needle-valve body 2 structures, the precision-fit section that makes needle-valve body 2 and needle-valve 1 assymmetrical deformation under the screw thread impacting force of fastening nut 3 and other External Force Actings reduces, and then ensure that needle-valve 1 and the radial frictional force of needle-valve body 2 reduce, and improve the precision and stability of high pressure common rail electric control fuel injector.
The oil sprayer of the present embodiment is applicable to electric-controlled fuel injector and hydraulic injection device, has universality.
Preferably, a kind of high pressure common rail electric control fuel injector with above-mentioned a kind of oil sprayer, also comprise parts such as controlling plunger, control plunger bushing, orifice plate, armature, armature guide way, oil injector body, between needle-valve 1 and needle-valve body 2, form and contain oil pocket 4, control plunger, control formation control chamber between plunger bushing and orifice plate, in oil injector body, be provided with main oil gallery.Control plunger and be arranged in control plunger bushing, its outer surface forms fitting surface with the surface of the interior bone of controlling plunger bushing.Armature is arranged in armature guiding, and the internal surface of the interior bone of its outer surface and armature guide way also forms fitting surface.Orifice plate is provided with oil-feed metering-orifice and fuel-displaced metering-orifice, and the aperture of oil-feed metering-orifice is less than the aperture of fuel-displaced metering-orifice.Fastening nut 3 is fastened together the assembly entirety such as needle-valve body 2, oil injector body, controls plunger, control plunger bushing, orifice plate, armature, armature guide way etc. and is installed in oil injector body.
The high pressure common rail electric control fuel injector of the present embodiment, the layout symmetrically and evenly of positioning pin hole and two the relative needle-valve body of oil-feed oilhole medial axis, can effectively improve the symmetry properties of needle valve structure, the precision-fit section that makes needle-valve body and needle-valve assymmetrical deformation under external force reduces, and then the radial frictional force that ensures needle-valve and needle-valve body reduces, the precision and stability of raising Performance of Fuel Injection Nozzle.In addition, the positioning pin hole of the present embodiment digs deep hole along extending axially under direction of needle-valve body, can further improve the symmetry properties of needle valve structure, thereby further improves the precision and stability of Performance of Fuel Injection Nozzle.In addition, the position of the Sheng oil pocket of the present embodiment is higher than the matching trim of needle-valve body and fastening nut formation, can effectively reduce the mesopore amount of deformation of the needle-valve body that is positioned at matching trim top, and then reduce the suffered radial frictional force of Performance of Fuel Injection Nozzle, improve the stability of motions of needle-valve.Simple in structure, be easy to realize, there is good using value.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without creative work.Therefore, all technician in the art comply with design of the present utility model on the basis of existing technology by the available technological scheme of logical analysis, reasoning, or a limited experiment, all should be in by the determined protection domain of claims.
Claims (7)
1. an improved oil sprayer, is characterized in that, comprises needle-valve, needle-valve body, fastening nut and Sheng oil pocket; Described needle-valve is arranged in described needle-valve body, and described Sheng oil pocket is arranged between described needle-valve and described needle-valve body; In described needle-valve body, be also provided with two oil-feed oil ducts, one end of described two oil-feed oil ducts is connected with described Sheng oil pocket, and the other end of described two oil-feed oil ducts forms two oil-feed oilholes at the upper surface of described needle-valve body; The medial axis of described two relatively described needle-valve bodies of oil-feed oil duct is arranged symmetrically with; Described needle-valve body has supporting surface, and described fastening nut has bump; The annular upper surface laminating of the annular lower surface of the supporting surface of described needle-valve body and the bump of fastening nut, forms matching trim; The plane at the end face place of described Sheng oil pocket is not less than the described matching trim of described needle-valve body and the formation of described fastening nut.
2. oil sprayer as claimed in claim 1, is characterized in that, the upper surface of described needle-valve body is provided with two positioning pin holes vertically vertically downward; The medial axis of described two relatively described needle-valve bodies of positioning pin hole is arranged symmetrically with.
3. oil sprayer as claimed in claim 2, is characterized in that, described two positioning pin holes are evenly arranged with the medial axis of described two relative described needle-valve bodies of oil-feed oil duct.
4. oil sprayer as claimed in claim 2, is characterized in that, the degree of depth that described positioning pin hole extends along the axial direction of described needle-valve body is no more than the plane at the sealing surface place of described needle-valve body and the formation of described fastening nut.
5. oil sprayer as claimed in claim 4, is characterized in that, the plane of being located at the sealing surface place forming with described needle-valve body and described fastening nut at the bottom of the axial hole of the described positioning pin hole of described needle-valve body is coplanar.
6. a high pressure common rail electric control fuel injector, is characterized in that, comprises the oil sprayer as described in claim 1～5 arbitrary.
7. a hydraulic injection device, is characterized in that, comprises the oil sprayer as described in claim 1～5 arbitrary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420161088.0U CN203822513U (en) | 2013-10-24 | 2014-04-03 | Improved fuel injector |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310511636.8 | 2013-10-24 | ||
| CN201310511636 | 2013-10-24 | ||
| CN201420161088.0U CN203822513U (en) | 2013-10-24 | 2014-04-03 | Improved fuel injector |
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| CN203822513U true CN203822513U (en) | 2014-09-10 |
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Family Applications (6)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420160499.8U Expired - Lifetime CN203867753U (en) | 2013-10-24 | 2014-04-03 | Oil sprayer |
| CN201410133457.XA Active CN103953484B (en) | 2013-10-24 | 2014-04-03 | Fuel injector for diesel engine |
| CN201410133277.1A Pending CN103953482A (en) | 2013-10-24 | 2014-04-03 | Diesel injector for diesel engine fuel system |
| CN201420161088.0U Expired - Lifetime CN203822513U (en) | 2013-10-24 | 2014-04-03 | Improved fuel injector |
| CN201410133366.6A Pending CN103953483A (en) | 2013-10-24 | 2014-04-03 | Diesel injector |
| CN201420161118.8U Expired - Lifetime CN203822514U (en) | 2013-10-24 | 2014-04-03 | Novel oil sprayer |
Family Applications Before (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420160499.8U Expired - Lifetime CN203867753U (en) | 2013-10-24 | 2014-04-03 | Oil sprayer |
| CN201410133457.XA Active CN103953484B (en) | 2013-10-24 | 2014-04-03 | Fuel injector for diesel engine |
| CN201410133277.1A Pending CN103953482A (en) | 2013-10-24 | 2014-04-03 | Diesel injector for diesel engine fuel system |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410133366.6A Pending CN103953483A (en) | 2013-10-24 | 2014-04-03 | Diesel injector |
| CN201420161118.8U Expired - Lifetime CN203822514U (en) | 2013-10-24 | 2014-04-03 | Novel oil sprayer |
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| CN (6) | CN203867753U (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109404192A (en) * | 2019-01-08 | 2019-03-01 | 北油电控燃油喷射***(天津)有限公司 | A kind of electronic fuel injection and the fuel injector including it |
| CN114165380B (en) * | 2021-12-09 | 2024-02-06 | 重庆红江机械有限责任公司 | Low-speed electromechanical control oil sprayer and assembly method thereof |
| CN114165373A (en) * | 2021-12-17 | 2022-03-11 | 中国船舶重工集团公司第七一一研究所 | Fuel injector and common rail system |
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| JP2009275597A (en) * | 2008-05-14 | 2009-11-26 | Yanmar Co Ltd | Common rail injector |
| EP2187042A1 (en) * | 2008-11-14 | 2010-05-19 | Robert Bosch GmbH | An injector nozzle and a nozzle retaining nut with a reduced effective head friction diameter |
| CN101806266B (en) * | 2010-03-04 | 2012-07-11 | 哈尔滨工程大学 | Double-valve fuel injecting device with electric-control monoblock pump and electric-control fuel injector |
| KR101148683B1 (en) * | 2010-06-07 | 2012-05-21 | 현대중공업 주식회사 | Dual fuel injector valve by hybrid nozzle with dual fuel injection valve for diesel and gas engine |
| CN101963119B (en) * | 2010-11-08 | 2012-04-25 | 郑国璋 | Piezoelectric high-pressure common rail electronic control injector |
| CN102168637A (en) * | 2011-05-25 | 2011-08-31 | 中国兵器工业集团第七○研究所 | Injector nozzle matching parts for diesel engine |
| CN102322378B (en) * | 2011-07-30 | 2013-03-27 | 郑国璋 | Low-viscosity fuel injector of diesel engine |
-
2014
- 2014-04-03 CN CN201420160499.8U patent/CN203867753U/en not_active Expired - Lifetime
- 2014-04-03 CN CN201410133457.XA patent/CN103953484B/en active Active
- 2014-04-03 CN CN201410133277.1A patent/CN103953482A/en active Pending
- 2014-04-03 CN CN201420161088.0U patent/CN203822513U/en not_active Expired - Lifetime
- 2014-04-03 CN CN201410133366.6A patent/CN103953483A/en active Pending
- 2014-04-03 CN CN201420161118.8U patent/CN203822514U/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN103953484B (en) | 2017-11-17 |
| CN103953483A (en) | 2014-07-30 |
| CN103953484A (en) | 2014-07-30 |
| CN203822514U (en) | 2014-09-10 |
| CN203867753U (en) | 2014-10-08 |
| CN103953482A (en) | 2014-07-30 |
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