CN109595110B - Rotary fuel injector - Google Patents
Rotary fuel injector Download PDFInfo
- Publication number
- CN109595110B CN109595110B CN201811655473.XA CN201811655473A CN109595110B CN 109595110 B CN109595110 B CN 109595110B CN 201811655473 A CN201811655473 A CN 201811655473A CN 109595110 B CN109595110 B CN 109595110B
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- Prior art keywords
- oil
- nozzle
- assembly
- needle valve
- rotary
- Prior art date
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- 239000000446 fuel Substances 0.000 title claims abstract description 37
- 238000002347 injection Methods 0.000 claims abstract description 31
- 239000007924 injection Substances 0.000 claims abstract description 31
- 238000005507 spraying Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 27
- 238000004891 communication Methods 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000005056 compaction Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 abstract description 14
- 239000000295 fuel oil Substances 0.000 abstract description 5
- 239000003595 mist Substances 0.000 abstract description 5
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 92
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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
- 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
-
- 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
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a rotary fuel injector, which is characterized in that fuel is injected at the junction of an inner spray nozzle and an outer spray nozzle through the joint rotation of the inner spray nozzle and the outer spray nozzle and the matching of horizontal and vertical spray nozzles, and the sprayed fuel column is in a spiral motion rule from bottom to top along with the rotation of the inner spray nozzle and the outer spray nozzle, so that the movement direction of a fuel beam is actively changed, the spray spiral spray is realized, the splitting length is reduced, the spray performance is improved, the fuel oil mist is uniformly distributed as much as possible, and the local over-concentration phenomenon of mixed gas is reduced. The invention can realize effective improvement of spraying performance without ultrahigh injection pressure, can effectively reduce injection of fuel into the combustion chamber, greatly improve the dynamic property, economy and emission of the diesel engine, has no excessively high requirement on the precision of the injector coupling, and has remarkable practical value.
Description
Technical Field
The invention relates to the field of fuel injectors, in particular to a rotary fuel injector.
Background
The diesel engine is used as the main power machine in the transportation field, and the performance, especially the power performance, economy and emission performance, are directly related to the labor production efficiency and quality of society. At present, a diesel injector generally adopts high injection pressure (such as the current common rail type electric control injection system can provide about 250MPa injection pressure) and small injection hole diameter (0.1 mm-0.2 mm, even lower than 0.1 mm) to improve the atomization, evaporation and mixing uniformity of fuel oil and reduce emission.
However, too high injection pressure places higher demands on the manufacturing of the precise coupling of the injector, and therefore, rather than conducting a balance study in contradiction between the increase of injection pressure and the precision demands of the manufacturing of the coupling, it would be an effective measure for optimizing the spray performance and combustion from other points of view, for example, from the structural improvement of the injection nozzle.
Disclosure of Invention
The invention aims to: in order to solve the problems in the prior art, the invention provides the rotary oil sprayer, which can effectively improve the spraying performance without ultrahigh spraying pressure, can effectively reduce the fuel oil from being sprayed to the wall surface of the combustion chamber, and greatly improve the dynamic property, the economical efficiency and the emission property of a diesel engine.
The technical scheme is as follows: in order to achieve the above purpose, the present invention adopts the following technical scheme: the rotary oil sprayer comprises a shell, an oil way, an oil inlet and an oil return port, wherein the shell comprises an electromagnetic valve assembly, a needle valve rod assembly and a nozzle assembly which are sequentially arranged from top to bottom;
the nozzle assembly comprises an inner rotary nozzle assembly and an outer rotary nozzle assembly which can rotate at high speed; the rotational speed of the outer rotating nozzle assembly is at least twice the rotational speed of the inner rotating nozzle assembly;
The inner rotary nozzle assembly is movably sleeved outside the shell, and a first sealing assembly is arranged between the inner rotary nozzle assembly and the shell; the outer rotary nozzle assembly is movably sleeved outside the inner rotary nozzle assembly, and a second sealing assembly is arranged between the outer rotary nozzle assembly and the inner rotary nozzle assembly;
At least 8 first oil injection slots which are arranged in parallel in the vertical direction are formed in the nozzle of the inner rotary nozzle assembly; at least 6 second oil injection joints which are arranged in parallel and are stepped in the horizontal direction are formed at the nozzle of the outer rotary nozzle assembly;
The oil inlet is arranged in the middle of the shell and is communicated with the oil way, a plurality of communicated oil cavities are formed among the oil way, the shell and each component in the shell, the oil cavities comprise an oil cavity I outside the electromagnetic valve component, an oil cavity II at the top of the needle valve rod component, an oil cavity III outside the needle valve rod component and an oil cavity IV from top to bottom, and an oil cavity V is formed between the bottom of the needle valve rod component and the nozzle component;
the oil way is divided into two paths after entering from the oil inlet, one path enters an oil cavity II at the upper part of the needle valve rod assembly through the oil filling control hole, and the other path directly enters an oil cavity IV at the outer part of the needle valve rod assembly downwards; a release control hole is arranged between the second oil cavity and the first oil cavity on the upper part; the oil return port is arranged at the top of the first oil cavity; the first side surface of the oil cavity is communicated with the third oil cavity through an oil way;
the upward movement and the downward pressing of the electromagnetic valve assembly realize the opening and closing of the release control hole so as to control the communication and blocking of the first oil cavity and the second oil cavity; the upward movement and the downward compaction of the needle valve rod assembly realize the communication and blocking of the oil cavity IV and the oil cavity V.
In some embodiments, the electromagnetic valve assembly comprises a power control part externally connected to the outside of the shell, a coil, an armature and a ball valve, wherein the coil, the armature and the ball valve are sequentially arranged from top to bottom in the shell; the upper and lower parts of the armature are respectively provided with an upper armature spring and a lower armature spring.
In some embodiments, the needle valve stem assembly includes a needle valve stem extending from a central portion of the housing to a nozzle of the nozzle assembly, a nozzle needle valve pressure ring, and a needle valve stem return spring; the nozzle needle valve pressure ring is sleeved on the outer surface of the needle valve rod and is positioned in the middle of the needle valve rod; the needle valve rod return spring is arranged above the nozzle needle valve pressure ring and is positioned in the oil cavity III.
In some embodiments, the inner rotary nozzle assembly further comprises an inner nozzle seat integrally formed with an inner nozzle seat driven wheel at an upper end thereof, an inner nozzle seat driving wheel connected to the external motor; the outer rotary nozzle assembly further comprises an outer nozzle seat, an outer nozzle seat driven wheel and an outer nozzle seat driving wheel, wherein the outer nozzle seat driven wheel is integrally formed at the upper end of the outer nozzle seat, and the outer nozzle seat driving wheel is connected with an external motor.
More preferably, the first sealing assembly comprises at least one first sealing groove arranged on the inner wall of the inner nozzle seat and an inner nozzle seat sealing ring installed inside the first sealing groove; the first seal assembly provides tightness between the inner rotary nozzle assembly 71 and the housing;
further, the number of the first sealing grooves is two.
More preferably, the second sealing assembly comprises a second sealing groove arranged on the outer wall of the inner nozzle seat and a third sealing groove arranged on the inner wall of the outer nozzle seat; and outer nozzle seat sealing rings are arranged in the second sealing groove and the third sealing groove.
More preferably, the rotating speed range of the outer motor is 2000-8000r/min.
In some embodiments, the rotational speed of the outer rotating nozzle assembly is twice the rotational speed of the inner rotating nozzle assembly.
The number of the first oil spraying slits is 8, the first oil spraying slits are uniformly distributed on the outer wall of the nozzle of the inner rotary nozzle assembly, the width of each slit is 0.1mm, and the length of each slit is 7mm; the number of the second oil injection joints is 6, the second oil injection joints are uniformly distributed on the outer wall of the outer rotary nozzle assembly in a stepped mode, the width of each joint is 0.1mm, the length of each joint is 4.03mm, and the center distance between every two adjacent second oil injection joints is 1mm. The design of the size can realize that the sprayed oil column is in an optimal spiral spraying state, and the uniformity of sprayed oil mist is improved.
The beneficial effects are that: according to the rotary fuel injector disclosed by the invention, through the common rotation of the inner rotary nozzle assembly and the outer rotary nozzle assembly and the matching of the horizontal fuel injection seam and the vertical fuel injection seam at the nozzle positions of the two nozzle assemblies, fuel is injected at the junction of the inner and outer fuel injection seams, and along with the rotation of the inner and outer rotary nozzle assemblies, the injected fuel column takes a spiral motion rule from bottom to top so as to realize the active change of the motion direction of a fuel beam, and the spray spiral injection and the splitting length are reduced, so that the spray performance is improved, the fuel oil mist is uniformly distributed as much as possible, and the local over-concentration phenomenon of mixed gas is reduced. The invention can realize effective improvement of spraying performance without ultrahigh injection pressure, can effectively reduce injection of fuel into the combustion chamber, greatly improve the dynamic property, economy and emission of the diesel engine, has no excessively high requirement on the precision of the injector coupling, and has remarkable practical value.
Drawings
FIG. 1 is a schematic diagram of a rotary injector according to embodiment 1 of the present invention, specifically, in an unopened state;
FIG. 2 is a schematic view showing a nozzle assembly of a rotary fuel injector according to embodiment 1 of the present invention;
FIG. 3 is a schematic view showing the structure of an inner nozzle assembly of a rotary fuel injector according to embodiment 1 of the present invention;
FIG. 4 is a schematic view showing the structure of an outer nozzle assembly of a rotary fuel injector according to embodiment 1 of the present invention;
FIG. 5 is a schematic view showing the structure of the seal ring of the inner and outer nozzle assemblies of the rotary fuel injector according to embodiment 1 of the present invention.
Detailed Description
Example 1:
Referring to fig. 1-5, the invention discloses a rotary fuel injector, which comprises a shell 1, a fuel way 2, a fuel inlet 3 and a fuel return port 4, wherein the shell 1 comprises a solenoid valve assembly 5, a needle valve rod assembly 6 and a nozzle assembly 7 which are sequentially arranged from top to bottom;
the electromagnetic valve assembly 5 comprises a power supply control part 51 externally connected to the outside of the shell 1, a coil 52, an armature 53 and a ball valve 54 which are sequentially arranged from top to bottom in the shell 1; the upper and lower parts of the armature 53 are respectively provided with an armature upper spring 55 and an armature lower spring 56;
the needle valve rod assembly 6 comprises a needle valve rod 61 extending from the middle of the shell 1 to the nozzle of the nozzle assembly 7, a nozzle needle valve pressure ring 62 and a needle valve rod return spring 63; the nozzle needle valve pressure ring 62 is sleeved on the outer surface of the needle valve rod 61 and is positioned in the middle of the needle valve rod 61; the needle stem return spring 63 is disposed above the nozzle needle pressure ring 62.
The oil inlet 3 is arranged in the middle of the shell 1 and is communicated with the oil way 2, a plurality of communicated oil cavities are formed among the oil way 2, the shell 1 and various components in the shell 1, the oil cavities comprise a first oil cavity 21 outside the electromagnetic valve component 5, a second oil cavity 22 at the top of the needle valve rod component 6, a third oil cavity 23 and a fourth oil cavity 24 outside the needle valve rod component 6 from top to bottom, and a fifth oil cavity 25 is formed between the bottom of the needle valve rod component 6 and the nozzle component 7; wherein the needle valve stem return spring 63 is disposed within the third oil chamber 23.
The nozzle assembly 7 includes an inner rotary nozzle assembly 71 and an outer rotary nozzle assembly 72 rotatable at a high speed; the rotational speed of the outer rotary nozzle assembly 72 is twice the rotational speed of the inner rotary nozzle assembly 71; the inner rotary nozzle assembly 71 comprises an inner nozzle holder 712, an inner nozzle holder driven wheel 713 at the upper end of the inner nozzle holder 712, and an inner nozzle holder driving wheel 714 connected with an external motor; the outer rotary nozzle assembly 72 further comprises an integrally formed outer nozzle seat 722, an outer nozzle seat driven wheel 723 at the upper end thereof, and an outer nozzle seat driving wheel 724 connected with an external motor; the outer motor rotates at a rotation speed of 2000-8000r/min, and the inner nozzle seat driven wheel and the outer nozzle seat driven wheel are respectively driven to rotate by the inner nozzle seat driving wheel and the outer nozzle seat driven wheel 723 has the double number of teeth as the inner nozzle seat driven wheel 713, so that the rotation speed of the inner nozzle seat driven wheel 713 is 2 times as high as the rotation speed of the outer nozzle seat driven wheel 723;
The inner rotary nozzle assembly 71 is movably sleeved outside the shell 1, and a first sealing assembly is arranged between the inner rotary nozzle assembly and the shell 1; the first seal assembly comprises two first seal grooves 717 formed on the inner wall of the inner nozzle holder 712 and an inner nozzle holder seal ring 715 mounted therein; the first seal assembly provides tightness between the inner rotary nozzle assembly 71 and the housing 1 to prevent leakage of pressurized fuel;
The outer rotary nozzle assembly 72 is movably sleeved outside the inner rotary nozzle assembly 71, and a second sealing assembly is arranged between the outer rotary nozzle assembly and the inner rotary nozzle assembly 71; the second sealing assembly comprises a second sealing groove 716 formed in the outer wall of the inner nozzle seat 712, and a third sealing groove 726 formed in the inner wall of the outer nozzle seat 722; an outer nozzle carrier seal ring 725 is disposed within the second seal groove 716 and the third seal groove 716; to prevent leakage of pressurized fuel from the gap between the two components.
8 First oil injection slits 711 which are arranged in parallel in the vertical direction are uniformly formed on the outer wall of the nozzle of the inner rotary nozzle assembly 71; each seam has a width of 0.1mm and a length of 7mm; 6 second fuel injection slits 721 which are stepped in the horizontal direction and are arranged in parallel are arranged on the outer wall of the nozzle position of the outer rotary nozzle assembly 72, the width of each slit is 0.1mm, the length of each slit is 4.03mm, and the center distance between every two adjacent second fuel injection slits 721 is 1mm. The design of the size can realize that the sprayed oil column is in an optimal spiral spraying state, and the uniformity of sprayed oil mist is improved.
The oil way 2 is divided into two paths after entering from the oil inlet 3, one path enters an oil cavity II 22 at the upper part of the needle valve rod assembly 6 through an oil filling control hole 221, and the other path directly enters an oil cavity IV 24 at the outer part of the needle valve rod assembly 6 downwards; a release control hole 222 is arranged between the oil cavity II 22 and the oil cavity I21 at the upper part; the oil return port 4 is arranged at the top of the first oil cavity 21; the side surface of the first oil cavity 21 is communicated with a third oil cavity 23 through an oil way 2;
The upward movement and downward pressing of the electromagnetic valve assembly 5 realize the opening and closing of the release control hole 222 so as to control the communication and blocking of the first oil cavity 21 and the second oil cavity 22; the upward and downward compaction of the needle valve stem assembly 6 effects communication and blockage of oil fourth 24 and oil fifth 25.
Working principle:
When the power supply control part 51 of the electromagnetic valve assembly 5 does not obtain external power supply, the armature 53 closes the release control hole 222 under the action of the armature upper spring 55, high-pressure oil enters the oil path 2 through the oil inlet 3 and enters the oil cavity II 22 above the needle valve rod 61 through the oil filling control hole 221, and overcomes the elasticity of the needle valve rod 61 pressing the needle valve rod return spring 63 to press the needle valve rod 61 to the upper port of the oil cavity V25 to close the needle valve rod 61, so that the nozzle of the nozzle assembly 7 is closed.
When the power supply control part 51 of the electromagnetic valve assembly 5 obtains power supply, the coil 52 is electrified and sucks the armature 53 upwards, the ball valve 54 moves upwards synchronously, so that the release control hole 222 is opened, the first oil cavity 21 is communicated with the second oil cavity 22, oil in the second oil cavity 22 flows back through the oil return port 4, the needle valve rod 61 moves upwards under the action of oil pressure in the fourth oil cavity 24, the fourth oil cavity 24 is communicated with the oil cavity 25, the nozzle of the nozzle assembly 7 is opened, the outer motor is started, and the inner rotating nozzle seat driving wheel and the outer rotating nozzle seat driving wheel respectively drive the inner rotating nozzle seat driven gear and the outer rotating nozzle seat driven gear to rotate at high speed, so that the inner rotating nozzle seat 712 and the outer rotating nozzle seat 722 are driven to rotate; the fuel is sprayed out from the oil cavity five 25 through the rotary first oil injection seam 711 and the rotary second oil injection seam 721 in sequence; because the juncture of two oil injection joints is just that the fuel sprays out, so along with the rotation of subassembly, the spun oil column is from the spiral motion law of top down to realize initiatively changing the direction of motion of oil bundle, make the fuel oil mist distribute as evenly as possible, reduce the local too thick phenomenon of gas mixture.
Claims (7)
1. The rotary oil sprayer comprises a shell (1), an oil way (2), an oil inlet (3) and an oil return port (4), and is characterized in that the shell (1) comprises an electromagnetic valve assembly (5), a needle valve rod assembly (6) and a nozzle assembly (7) which are sequentially arranged from top to bottom;
The nozzle assembly (7) comprises an inner rotary nozzle assembly (71) and an outer rotary nozzle assembly (72) rotatable at high speed; the rotational speed of the outer rotating nozzle assembly (72) is at least twice the rotational speed of the inner rotating nozzle assembly (71);
the inner rotary nozzle assembly (71) is movably sleeved outside the shell (1) and a first sealing assembly is arranged between the inner rotary nozzle assembly and the shell (1); the outer rotary nozzle assembly (72) is movably sleeved outside the inner rotary nozzle assembly (71), and a second sealing assembly is arranged between the outer rotary nozzle assembly and the inner rotary nozzle assembly (71);
at least 8 first oil injection joints (711) which are arranged in parallel in the vertical direction are arranged at the nozzle of the inner rotary nozzle assembly (71); at least 6 second oil injection slits (721) which are arranged in parallel and are in a stepped shape in the horizontal direction are formed at the nozzle of the outer rotary nozzle assembly (72);
The oil inlet (3) is arranged in the middle of the shell (1) and is communicated with the oil way (2), a plurality of communicated oil cavities are formed among the oil way (2), the shell (1) and all components in the shell (1), and the oil cavities from top to bottom comprise an oil cavity I (21) outside the electromagnetic valve component (5), an oil cavity II (22) at the top of the needle valve rod component (6), an oil cavity III (23) and an oil cavity IV (24) outside the needle valve rod component (6), and an oil cavity V (25) between the bottom of the needle valve rod component (6) and the nozzle component (7);
The oil way (2) is divided into two paths after entering from the oil inlet (3), one path enters an oil cavity II (22) at the upper part of the needle valve rod assembly (6) through an oil filling control hole (221), and the other path directly enters an oil cavity IV (24) at the outer part of the needle valve rod assembly (6) downwards; a release control hole (222) is arranged between the oil cavity II (22) and the oil cavity I (21) at the upper part; the oil return port (4) is arranged at the top of the first oil cavity (21); the side surface of the first oil cavity (21) is communicated with the third oil cavity (23) through an oil way (2);
The upward movement and downward pressing of the electromagnetic valve assembly (5) realize the opening and closing of the release control hole (222) so as to control the communication and blocking of the first oil cavity (21) and the second oil cavity (22); the upward movement and the downward compaction of the needle valve rod assembly (6) realize the communication and blocking of the fourth oil cavity (24) and the fifth oil cavity (25);
the needle valve rod assembly (6) comprises a needle valve rod (61) extending from the middle part of the shell (1) to a nozzle of the nozzle assembly (7), a nozzle needle valve pressure ring (62) and a needle valve rod return spring (63); the nozzle needle valve pressure ring (62) is sleeved on the outer surface of the needle valve rod (61) and is positioned in the middle of the needle valve rod (61); the needle valve rod return spring (63) is arranged above the nozzle needle valve pressure ring (62) and is positioned in the oil cavity III (23); the inner rotary nozzle assembly (71) further comprises an inner nozzle seat (712) formed integrally, an inner nozzle seat driven wheel (713) at the upper end of the inner nozzle seat, and an inner nozzle seat driving wheel (714) connected with an external motor; the outer rotary nozzle assembly (72) further comprises an outer nozzle seat (722) formed integrally, an outer nozzle seat driven wheel (723) at the upper end of the outer nozzle seat, and an outer nozzle seat driving wheel (724) connected with an external motor; the first sealing assembly comprises at least one first sealing groove (717) arranged on the inner wall of the inner nozzle seat (712) and an inner nozzle seat sealing ring (715) arranged inside the first sealing groove; the first seal assembly achieves tightness of the inner rotary nozzle assembly (71) with the housing (1).
2. The rotary fuel injector of claim 1, wherein: the electromagnetic valve assembly (5) comprises a power supply control part (51) externally connected to the outside of the shell (1), a coil (52), an armature (53) and a ball valve (54) which are sequentially arranged inside the shell (1) from top to bottom; the upper part and the lower part of the armature (53) are respectively provided with an armature upper spring (55) and an armature lower spring (56).
3. The rotary fuel injector of claim 1, wherein: the number of the first seal grooves (717) is two.
4. The rotary fuel injector of claim 1, wherein: the second sealing assembly comprises a second sealing groove (716) formed in the outer wall of the inner nozzle seat (712), and a third sealing groove (726) formed in the inner wall of the outer nozzle seat (722); an outer nozzle carrier seal ring (725) is disposed within the second seal groove (716) and the third seal groove (726).
5. The rotary fuel injector of claim 1, wherein: the rotating speed range of the outer motor is 2000-8000r/min.
6. The rotary fuel injector of claim 1, wherein: the rotational speed of the outer rotating nozzle assembly (72) is twice the rotational speed of the inner rotating nozzle assembly (71).
7. The rotary fuel injector of claim 1, wherein: the number of the first oil spraying slits (711) is 8, the first oil spraying slits are uniformly distributed on the outer wall of the nozzle of the inner rotary nozzle assembly (71), the width of each slit is 0.1mm, and the length of each slit is 7mm; the number of the second oil injection slits (721) is 6, the second oil injection slits are uniformly distributed on the outer wall of the nozzle of the outer rotary nozzle assembly (72) in a stepped mode, the width of each slit is 0.1mm, the length of each slit is 4.03mm, and the center distance between every two adjacent second oil injection slits (721) is 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811655473.XA CN109595110B (en) | 2018-12-28 | 2018-12-28 | Rotary fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811655473.XA CN109595110B (en) | 2018-12-28 | 2018-12-28 | Rotary fuel injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109595110A CN109595110A (en) | 2019-04-09 |
| CN109595110B true CN109595110B (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811655473.XA Active CN109595110B (en) | 2018-12-28 | 2018-12-28 | Rotary fuel injector |
Country Status (1)
| Country | Link |
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| CN (1) | CN109595110B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973268A (en) * | 2019-05-06 | 2019-07-05 | 陈金昊 | A kind of rotary opening and closing formula electric-controlled fuel injector of controllable temperature heated fuel oil |
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| DE19748384A1 (en) * | 1997-11-03 | 1999-05-06 | Guenter Dr Ing Slowik | Fuel injection process |
| CN106593727A (en) * | 2017-01-18 | 2017-04-26 | 哈尔滨工程大学 | Static leakage-free long needle valve electrically controlled oil sprayer |
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| JP2004028051A (en) * | 2002-06-28 | 2004-01-29 | Denso Corp | Fuel injection nozzle and method for manufacturing the same |
| US20150020778A1 (en) * | 2012-03-14 | 2015-01-22 | International Engine Intellectual Property Company Llc | Fuel injector nozzle |
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- 2018-12-28 CN CN201811655473.XA patent/CN109595110B/en active Active
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| DE19748384A1 (en) * | 1997-11-03 | 1999-05-06 | Guenter Dr Ing Slowik | Fuel injection process |
| CN106593727A (en) * | 2017-01-18 | 2017-04-26 | 哈尔滨工程大学 | Static leakage-free long needle valve electrically controlled oil sprayer |
| CN106762293A (en) * | 2017-01-18 | 2017-05-31 | 哈尔滨工程大学 | A kind of two-way oil-feed without static leakage needle-valve electric-controlled fuel injector long |
| CN209458049U (en) * | 2018-12-28 | 2019-10-01 | 南通理工学院 | Rotary oil ejector |
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| Title |
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| 发动机产生气阻原因及其排除方法_张旭东;张旭东;《农用机械》;第55页 * |
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| CN109595110A (en) | 2019-04-09 |
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