CN114790957B - Slide valve type common rail fuel injector - Google Patents
Slide valve type common rail fuel injector Download PDFInfo
- Publication number
- CN114790957B CN114790957B CN202210464016.2A CN202210464016A CN114790957B CN 114790957 B CN114790957 B CN 114790957B CN 202210464016 A CN202210464016 A CN 202210464016A CN 114790957 B CN114790957 B CN 114790957B
- Authority
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- China
- Prior art keywords
- hole
- sleeve
- valve body
- control valve
- electromagnet
- Prior art date
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- 239000000446 fuel Substances 0.000 title claims abstract description 25
- 239000000295 fuel oil Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 abstract description 18
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 238000011084 recovery Methods 0.000 abstract description 5
- 238000005507 spraying Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 12
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- 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
- 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
-
- 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
Landscapes
- 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 invention provides a slide valve type common rail fuel injector which comprises an armature, an electromagnet sleeve and a control valve body, wherein the armature, the electromagnet sleeve and the control valve body are respectively arranged in a top cover, a first through hole is formed in the middle of the electromagnet sleeve, a second through hole is formed in the middle of the armature, the upper end of the control valve body is in contact connection with the inner wall of the top cover, the lower end of the control valve body sequentially penetrates through the first through hole and the second through hole and then is in contact connection with the upper end of a valve sleeve, the periphery of the valve sleeve is fixedly connected to the inner wall of the top cover, the inner ring of the valve sleeve is in sliding connection with a needle valve, the control valve body can axially slide along the first through hole, an electromagnet is arranged in the electromagnet sleeve and is power for controlling the axial sliding of the valve body, and the axially sliding control valve body is of an opening and closing structure of the needle valve. According to the slide valve type common rail oil sprayer, the double sealing surface design is used, oil inlet and oil discharge processes of the control cavity are separated, the pressure release and pressure recovery speeds of the control cavity are increased, the movement speed of the needle valve is improved, and the oil spraying duration is reduced.
Description
Technical Field
The invention belongs to the field of common rail fuel injectors, and particularly relates to a slide valve type common rail fuel injector.
Background
The common rail fuel injector is used as the core of new generation diesel engine technology, has been developed fully, and is widely used in the fields of vehicles, electric power, ships, military, etc. its working principle is that the control valve is used for controlling the on-off of the oil inlet and return oil path communicated with the control cavity to regulate the rising and lowering of the pressure of the control cavity, so as to control the opening and closing of the needle valve.
The control valve is one of core components of the common rail fuel injector, the structure of the control valve directly influences the performance of the fuel injector, and from the structural view, the common rail fuel injector control valve with single sealing surfaces such as a traditional ball valve, a plane valve and a balance valve cannot separate the process of fuel inlet and fuel discharge of a control cavity, and high-pressure fuel is continuously supplemented when the control cavity discharges and discharges the fuel in the needle valve opening process, so that the pressure release speed of the control cavity is reduced, the opening speed of the needle valve is reduced, the size of a fuel inlet hole is limited, the pressure recovery speed of the control cavity is reduced, and the closing speed of the needle valve is limited.
Disclosure of Invention
In view of the above, the present invention aims to provide a sliding valve type common rail injector, so as to solve the problem of slow speed of opening and closing a needle valve of a control valve in the prior art.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
the utility model provides a sliding valve type common rail fuel injector, including inside armature, electro-magnet cover and the control valve body that sets up respectively of top cap, electro-magnet cover middle part is equipped with first through-hole, armature middle part is equipped with the second through-hole, control valve body upper end contact is connected to the top cap inner wall, the lower extreme of control valve body passes first through-hole and second through-hole back contact in proper order and is connected to the upper end of valve pocket, the peripheral fixed connection of valve pocket is to the top cap inner wall, and valve pocket inner circle sliding connection needle valve, control valve body can follow first through-hole axial slip, set up the electro-magnet in the electro-magnet cover, the electro-magnet is the power of control valve body axial slip, the axial slip control valve body is the structure that opens and shuts of needle valve.
Further, the upper end of the armature is provided with a clamping groove, the periphery of the upper end of the control valve body is provided with a clamping table, the lower end of the clamping table is in contact connection with the bottom of the clamping groove, the upper end of the control valve body is provided with a mounting groove, a first spring is arranged in the mounting groove, and the upper end of the first spring is in contact connection with the inner wall of the top cover.
Further, a second spring is arranged on the periphery of the electromagnet sleeve, and two ends of the second spring are fixedly connected to the lower end of the armature and the inner side wall of the top cover respectively.
Further, the inner ring at the lower end of the top cover is connected to the periphery of the upper end of the pipe sleeve in a threaded mode, the valve sleeve is fixedly installed on the inner ring of the pipe sleeve, the upper end of the valve sleeve is abutted to the lower end of the electromagnet sleeve, a blind hole is formed in the lower end of the valve sleeve, and the upper end of the needle valve is connected into the blind hole in a sliding mode.
Further, the middle part of the upper end of the valve sleeve is provided with a third through hole, a control cavity is arranged between the upper end of the needle valve and the inside of the valve sleeve, the third through hole is communicated to the control cavity, the middle part of the control valve body is provided with a fourth through hole, the upper end of the armature and the inside of the top cover are provided with pressure relief spaces, the top cover top is provided with a fifth through hole, a first gap is arranged between the upper end of the control valve body and the top cover in the electrified state of the electromagnet, and the control cavity is communicated to the fifth through hole through the third through hole, the fourth through hole, the first gap and the pressure relief spaces in sequence.
Further, a sixth through hole is formed in the side wall of the valve sleeve, a high-pressure fuel oil area is arranged between the periphery of the valve sleeve and the inner ring of the valve sleeve, the sixth through hole is communicated to the high-pressure fuel oil area, when the electromagnet is in a power-off state, the upper end of the control valve body is abutted to the top of the top cover, the pressure release space is not communicated with the fourth through hole, a second gap is formed between the lower end of the control valve body and the top of the valve sleeve, and the high-pressure fuel oil area is communicated to the control cavity sequentially through the sixth through hole, the second gap and the third through hole.
Compared with the prior art, the sliding valve type common rail oil sprayer has the following beneficial effects: by using the double sealing surface design, the oil inlet and oil discharge processes of the control cavity are separated, the pressure relief and pressure recovery speeds of the control cavity are increased, the needle valve movement speed is improved, and the oil injection duration is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of an explosion structure of a sliding valve type common rail injector according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a sliding valve type common rail injector according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of an electromagnet sleeve according to an embodiment of the present invention;
fig. 4 is a schematic structural view of an armature according to an embodiment of the invention;
fig. 5 is a schematic structural diagram of a control valve body according to an embodiment of the present invention.
Reference numerals illustrate:
1-top cover; 11-a pressure relief space; 12-a fifth through hole; 2-armature; 21-a second through hole; 22-clamping grooves; 3-an electromagnet sleeve; 31-a second spring; 32-a first through hole; 4-controlling the valve body; 41-fourth through holes; 42-clamping table; 43-mounting groove; 44-a first spring; 5-valve sleeve; 51-a third through hole; 52-a control chamber; 53-sixth through hole; 54-high pressure fuel zone; 6-needle valve; 61-a third spring; 7-pipe sleeve.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1-5, a sliding valve type common rail oil injector comprises an armature 2, an electromagnet sleeve 3 and a control valve body 4 which are respectively arranged in a top cover 1, wherein a first through hole 32 is formed in the middle of the electromagnet sleeve 3, a second through hole 21 is formed in the middle of the armature 2, the upper end of the control valve body 4 is in contact connection with the inner wall of the top cover 1, the lower end of the control valve body 4 sequentially passes through the first through hole 32 and the second through hole 21 and then is in contact connection with the upper end of a valve sleeve 5, the periphery of the valve sleeve 5 is fixedly connected to the inner wall of the top cover 1, the inner ring of the valve sleeve 5 is in sliding connection with a needle valve 6, the control valve body 4 can axially slide along the first through hole 32, the electromagnet is arranged in the electromagnet sleeve 3, the electromagnet is the power for axially sliding of the control valve body 4, the axially sliding control valve body 4 forms an opening and closing structure of the needle valve 6, the upper end of the control valve body 4 is in contact connection with the inner wall of the top cover 1 to form a sealing structure, the lower end of the control valve body 4 is in contact with the upper end of the valve sleeve 5 to form a sealing structure, and by using a double sealing surface design, the oil inlet of the control cavity 52 is separated from the oil discharging process, the pressure release speed of the pressure recovery speed of the control cavity 52 is increased, the movement duration of the needle 6 is prolonged, and the movement duration is shortened.
The upper end of the armature 2 is provided with a clamping groove 22, the periphery of the upper end of the control valve body 4 is provided with a clamping table 42, the lower end of the clamping table 42 is in contact connection with the bottom of the clamping groove 22, the matching of the clamping groove 22 and the clamping table 42 is used for limiting the relative position of the control valve body 4 and the electromagnet sleeve 3, the upper end of the control valve body 4 is provided with a mounting groove 43, a first spring 44 is arranged in the mounting groove 43, and the upper end of the first spring 44 is in contact connection with the top inner wall of the top cover 1.
The periphery of the electromagnet sleeve 3 is provided with a second spring 31, two ends of the second spring 31 are respectively fixedly connected to the lower end of the armature 2 and the inner side wall of the top cover 1, the second spring 31 has upward elastic force, and the armature 2 and the control valve body 4 are pushed upwards by the upward elastic force of the second spring 31.
The inner ring of the lower end of the top cover 1 is connected to the periphery of the upper end of the pipe sleeve 7 through threads, the valve sleeve 5 is fixedly installed on the inner ring of the pipe sleeve 7, the upper end of the valve sleeve 5 is abutted to the lower end of the electromagnet sleeve 3, a blind hole is formed in the lower end of the valve sleeve 5, the upper end of the needle valve 6 is slidably connected into the blind hole, a third spring 61 is arranged on the periphery of the needle valve 6, and as shown in fig. 2, the third spring 61 is an elastic reset structure of the needle valve 6.
The middle part of the upper end of the valve sleeve 5 is provided with a third through hole 51, a control cavity 52 is arranged between the upper end of the needle valve 6 and the inside of the valve sleeve 5, the third through hole 51 is communicated to the control cavity 52, the middle part of the control valve body 4 is provided with a fourth through hole 41, the upper end of the armature 2 and the inside of the top cover 1 are provided with a pressure relief space 11, the top of the top cover 1 is provided with a fifth through hole 12, a first gap is arranged between the upper end of the control valve body 4 and the top cover 1 in the electromagnet electrifying state, and the control cavity 52 is communicated to the fifth through hole 12 sequentially through the third through hole 51, the fourth through hole 41, the first gap and the pressure relief space 11.
The side wall of the valve sleeve 5 is provided with a sixth through hole 53, a high-pressure fuel oil area 54 is arranged between the periphery of the valve sleeve 5 and the inner ring of the pipe sleeve 7, the sixth through hole 53 is communicated to the high-pressure fuel oil area 54, when the electromagnet is in a power-off state, the upper end of the control valve body 4 is propped against the top of the top cover 1, the pressure relief space 11 is not communicated with the fourth through hole 41, a second gap is arranged between the lower end of the control valve body 4 and the top of the valve sleeve 5, and the high-pressure fuel oil area 54 is communicated to the control cavity 52 sequentially through the sixth through hole 53, the second gap and the third through hole 51.
As shown in fig. 2, the dimensions of the third through hole 51 and the sixth through hole 53 are limited by space, and can be enlarged at will, the electromagnet is installed in the electromagnet cavity, the electromagnet attracts the armature 2 to move downwards when working, and the direction opposite to the direction of the traditional electromagnet attracting the armature 2 to move, the upper end and the lower end of the control valve body 4 are respectively provided with sealing surfaces, the inner diameter of the sealing belt of the upper sealing surface is equal to the outer diameter of the sealing belt of the lower sealing surface, so that the pressure borne by the upper end and the lower end of the control valve are equal, the guiding surface of the armature 2 is in clearance fit with the inner wall of the top cover 1, the armature 2 is ensured not to incline in the moving process, the second through hole 21 of the armature 2 is in clearance fit with the periphery of the control valve body 4, and a gasket can be installed in the installation groove 43 of the control valve body 4 so as to adjust the lift of the control valve body 4.
The working process of the slide valve type common rail oil injector comprises the following steps:
as shown in fig. 2, the electromagnet does not work, the armature 2 is kept at the upper dead center under the action of the second spring 31, the armature 2 and the control valve body 4 are in a compressed state, the control valve body 4 is compressed by the first spring 44 under the upward compressing force, the upper sealing surface of the control valve body 4 is compressed with the inner wall of the top cover 1 to form a seal, the lower sealing surface of the control valve body 4 is separated from the valve sleeve 5, at this time, the high-pressure fuel area 54 is communicated to the control cavity 52 through the sixth through hole 53, the second gap and the third through hole 51 in sequence, the high-pressure fuel is filled in the control cavity 52, the needle valve 6 is kept at the lower dead center under the pressure action of the third spring 61 and the control cavity 52, the needle valve 6 is in a closed state, and the fuel injector does not work.
Under the electrified state of the electromagnet, the armature 2 is attracted to move to the lower dead center against the elastic force of the second spring 31, the valve body 4 is controlled, the armature 2 is in a separated state, no force interaction exists among the armature 2, the valve body 4 moves to the lower dead center under the elastic force of the first spring 44, the lower sealing surface of the valve body 4 is tightly pressed with the top surface of the valve sleeve 5 to form sealing, the upper sealing surface is opened, the control cavity 52 is communicated to the fifth through hole 12 through the third through hole 51, the fourth through hole 41 and the first gap and the pressure relief space 11 in sequence, the control cavity 52 is disconnected with the high-pressure fuel area 54, the pressure in the control cavity 52 is rapidly reduced to the opening pressure of the needle valve 6, the needle valve 6 moves upwards, the fuel injector begins to inject fuel, the control cavity 52 is disconnected with the high-pressure fuel channel in the pressure relief process, and the pressure relief speed of the control cavity 52 can be improved.
When the electromagnet is powered off, the armature 2 moves to the upper dead point again under the action of the second spring 31, an upward pressing force is provided for the control valve body 4, the upper sealing surface of the control valve body 4 forms a seal with the inner wall of the top cover 1, the lower sealing surface of the control valve body 4 is opened, the high-pressure fuel area 54 is communicated with the control cavity 52, and when the pressure of the control cavity 52 reaches the closing pressure of the needle valve 6, the needle valve 6 starts to be closed. The larger oil inlet measuring hole and the oil return measuring hole can improve the pressure recovery speed of the control cavity 52, so that the closing speed of the needle valve 6 is higher.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (4)
1. A spool valve type common rail fuel injector, characterized by: the electromagnetic valve comprises an armature (2), an electromagnet sleeve (3) and a control valve body (4) which are respectively arranged in a top cover (1), wherein a first through hole (32) is formed in the middle of the electromagnet sleeve (3), a second through hole (21) is formed in the middle of the armature (2), the upper end of the control valve body (4) is connected to the inner wall of the top cover (1) in a contact manner, the lower end of the control valve body (4) sequentially penetrates through the first through hole (32) and the second through hole (21) and then is connected to the upper end of a valve sleeve (5), the periphery of the valve sleeve (5) is fixedly connected to the inner wall of the top cover (1), the inner ring of the valve sleeve (5) is in sliding connection with a needle valve (6), the control valve body (4) can axially slide along the first through hole (32), an electromagnet is arranged in the electromagnet sleeve (3), the electromagnet is the power for axially sliding the control valve body (4), and the axially sliding control valve body (4) is in an opening and closing structure of the needle valve (6).
The inner ring at the lower end of the top cover (1) is connected to the periphery of the upper end of the pipe sleeve (7) through threads, the valve sleeve (5) is fixedly arranged at the inner ring of the pipe sleeve (7), the upper end of the valve sleeve (5) is abutted to the lower end of the electromagnet sleeve (3), a blind hole is formed in the lower end of the valve sleeve (5), and the upper end of the needle valve (6) is connected into the blind hole in a sliding mode;
the middle part of the upper end of the valve sleeve (5) is provided with a third through hole (51), a control cavity (52) is arranged between the upper end of the needle valve (6) and the inside of the valve sleeve (5), the third through hole (51) is communicated to the control cavity (52), the middle part of the control valve body (4) is provided with a fourth through hole (41), the upper end of the armature (2) and the inside of the top cover (1) are provided with pressure relief spaces (11), the top cover (1) is provided with a fifth through hole (12), the electromagnet attracts the armature (2) to move downwards under the electrifying state of the electromagnet, a first gap is arranged between the upper end of the control valve body (4) and the top cover (1), and the control cavity (52) sequentially passes through the third through hole (51), the fourth through hole (41) and the first gap and the pressure relief spaces (11) are communicated to the fifth through hole (12).
2. A spool valve type common rail injector as defined in claim 1, wherein: the upper end of the armature (2) is provided with a clamping groove (22), the periphery of the upper end of the control valve body (4) is provided with a clamping table (42), the lower end of the clamping table (42) is in contact connection with the bottom of the clamping groove (22), the upper end of the control valve body (4) is provided with a mounting groove (43), a first spring (44) is arranged in the mounting groove (43), and the upper end of the first spring (44) is in contact connection with the inner wall of the top cover (1).
3. A spool valve type common rail injector as defined in claim 1, wherein: the periphery of the electromagnet sleeve (3) is provided with a second spring (31), and two ends of the second spring (31) are respectively and fixedly connected to the lower end of the armature (2) and the inner side wall of the top cover (1).
4. A spool valve type common rail injector as defined in claim 1, wherein: the side wall of the valve sleeve (5) is provided with a sixth through hole (53), a high-pressure fuel oil area (54) is arranged between the periphery of the valve sleeve (5) and the inner ring of the pipe sleeve (7), the sixth through hole (53) is communicated with the high-pressure fuel oil area (54), when the electromagnet is in a power-off state, the upper end of the control valve body (4) is abutted to the top of the top cover (1), the pressure relief space (11) is not communicated with the fourth through hole (41), a second gap is arranged between the lower end of the control valve body (4) and the top of the valve sleeve (5), and the high-pressure fuel oil area (54) is communicated to the control cavity (52) through the sixth through hole (53), the second gap and the third through hole (51) in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210464016.2A CN114790957B (en) | 2022-04-29 | 2022-04-29 | Slide valve type common rail fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210464016.2A CN114790957B (en) | 2022-04-29 | 2022-04-29 | Slide valve type common rail fuel injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114790957A CN114790957A (en) | 2022-07-26 |
| CN114790957B true CN114790957B (en) | 2023-11-21 |
Family
ID=82461917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210464016.2A Active CN114790957B (en) | 2022-04-29 | 2022-04-29 | Slide valve type common rail fuel injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114790957B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773098A (en) * | 2005-07-25 | 2006-05-17 | 无锡油泵油嘴研究所 | Co-rail oil injection system electric control oil injector |
| EP1939441A2 (en) * | 2006-12-21 | 2008-07-02 | Robert Bosch Gmbh | Fuel injector |
| CN101382110A (en) * | 2008-10-08 | 2009-03-11 | 北京华威奇燃油喷射科技有限公司 | Disk spring type high pressure common rail electric-controlled fuel injector |
| CN101925733A (en) * | 2008-01-22 | 2010-12-22 | 罗伯特·博世有限公司 | Fuel injector control valve element of which comprises support region |
| CN105492755A (en) * | 2013-06-25 | 2016-04-13 | 罗伯特·博世有限公司 | Control valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1273791A3 (en) * | 2001-07-03 | 2003-03-12 | CRT Common Rail Technologies AG | Fuel injection valve for internal combustion engines |
-
2022
- 2022-04-29 CN CN202210464016.2A patent/CN114790957B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773098A (en) * | 2005-07-25 | 2006-05-17 | 无锡油泵油嘴研究所 | Co-rail oil injection system electric control oil injector |
| EP1939441A2 (en) * | 2006-12-21 | 2008-07-02 | Robert Bosch Gmbh | Fuel injector |
| CN101925733A (en) * | 2008-01-22 | 2010-12-22 | 罗伯特·博世有限公司 | Fuel injector control valve element of which comprises support region |
| CN101382110A (en) * | 2008-10-08 | 2009-03-11 | 北京华威奇燃油喷射科技有限公司 | Disk spring type high pressure common rail electric-controlled fuel injector |
| CN105492755A (en) * | 2013-06-25 | 2016-04-13 | 罗伯特·博世有限公司 | Control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114790957A (en) | 2022-07-26 |
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