CN217632740U

CN217632740U - Electronic fuel injection nozzle

Info

Publication number: CN217632740U
Application number: CN202221877070.1U
Authority: CN
Inventors: 赵典秋; 华海峰; 林友贵; 赵典隆; 黄程强; 苏玉英; 王林风; 周立斌; 钟瑞文
Original assignee: Zhejiang Baton Dynamics Systems Co ltd
Current assignee: Zhejiang Baton Dynamics Systems Co ltd
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2022-10-21
Anticipated expiration: 2032-07-21

Abstract

The utility model discloses an electronic fuel sprayer, it includes casing and oil pipe body, two inside and outside independent cavities form between oil pipe body and the shells inner wall, the casing bottom is equipped with the oil outlet, oil outlet and inboard cavity intercommunication, casing circumference is equipped with outer inlet port, the oil pipe is internal to be equipped with interior inlet port, the inboard of interior inlet port is equipped with interior filter screen subassembly, the outside of outer inlet port is equipped with outer filter screen subassembly, and the internal oil pipe that is equipped with and constitutes sliding fit armature and sets up at armature front end rather than linkage complex ejector pin with the internal wall of oil pipe, the external side of oil pipe is equipped with the coil pack who is used for driving armature action, be equipped with the disk seat between the front end of the oil pipe body and the oil outlet, be equipped with the ball core in the disk seat, the front end and the setting of ball core roof pressure, be equipped with the oil spout board that has the aperture between disk seat and the oil outlet. The needle valve is changed into a ball valve for matching, the processing difficulty is reduced, the part processing and the product manufacturing are simpler and more convenient, and the cost of the finished product is integrally saved.

Description

Electronic fuel injection nozzle

Technical Field

The utility model particularly relates to an electron fuel sprayer.

Background

The electronic fuel injection nozzle is one of key parts of an automobile, and the performance of the electronic fuel injection nozzle can seriously affect the performance of an engine. The needle valve of the oil nozzle is sucked up, the spray hole is opened, and the fuel oil is sprayed out from the spray hole at a high speed to form a fog shape, so that the full combustion is facilitated. However, most of the existing oil spray nozzles adopt needle valves, and the precision of the spray holes is very important because the needle tubes of the needle valves and the spray holes are matched to determine the quality of the oil spray nozzles, so that the existing electronic oil spray nozzles are difficult to process, the difficulty in part preparation is high, and the production efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide an electron fuel sprayer.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides an electronic oil nozzle, its includes casing and the oil pipe body of axial setting in the casing, form inside and outside two independent cavities between oil pipe body and the shells inner wall, the casing bottom is equipped with the oil outlet, oil outlet and inboard cavity intercommunication, casing circumference is equipped with the outer inlet port with outside cavity intercommunication, be equipped with the interior inlet port of inside and outside cavity of intercommunication on the oil pipe body, the inboard of interior inlet port is equipped with interior filter screen subassembly, the outside of outer inlet port is equipped with outer filter screen subassembly, just be equipped with in the oil pipe body and constitute the armature that slides complex and set up at armature front end and its linkage complex ejector pin with the internal wall of oil pipe, the oil pipe body outside is equipped with the coil pack who is used for driving armature action, be equipped with the disk seat between the front end of oil pipe body and the oil outlet, be equipped with the ball core in the disk seat, the front end and the setting of ball core roof pressure, be equipped with the oil spout board that has the aperture between disk seat and the oil outlet.

The bottom of the valve seat is provided with a groove, and the oil spraying plate is embedded in the groove.

The ball valve is characterized in that a through hole is formed in the center of the valve seat, a plurality of notch grooves are formed in the circumferential array of the through holes, an arc transition surface is arranged between the upper end of the through hole and the bottom of each notch groove, and the arc transition surfaces are matched with the spherical surface of the ball core.

The upper end of the valve seat is provided with an insertion part which is embedded into the oil pipe body and is attached to the inner wall of the oil pipe body.

The armature iron is communicated with the center of the ejector rod to form an oil path, and through holes are formed in the circumferential direction of the lower end of the ejector rod.

A limiting part is inserted at the rear end of the armature, the limiting part is arranged in an axially through mode, and an elastic part is arranged between the limiting part and the ejector rod.

And a pipe plug is arranged at the tail end of the oil pipe body.

The casing is including the plug-in components seat that connects gradually, be equipped with the middle casing of outer inlet port and be equipped with the end cover of oil outlet.

The outer filter screen subassembly is including the sleeve pipe that can the cover locate the casing outside, sleeve pipe circumference is equipped with a plurality of openings, sheathed tube inner wall is equipped with the filter screen that covers the opening.

The inner filter screen assembly comprises a supporting pipe arranged inside the oil pipe body, the outer wall of the supporting pipe is in contact with the inner wall of the oil pipe body, a plurality of openings are circumferentially arranged on the supporting pipe, and a filter screen covering the openings is arranged on the inner wall of the supporting pipe.

The utility model has the advantages that: the needle valve is changed into a ball valve for matching, the processing difficulty is reduced, the part processing and the product manufacturing are simpler and more convenient, and the cost of the finished product is integrally saved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic cross-sectional view of the present invention.

Fig. 3 is a schematic cross-sectional view of the valve seat of the present invention.

Fig. 4 is the structure schematic diagram of the outer strainer assembly of the present invention.

Figure 5 is the structure schematic diagram of the inner screen assembly of the utility model.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; the connection can be mechanical connection or connection; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

As shown in the figure, the electronic oil nozzle comprises a shell 1 and an oil pipe body 7 axially arranged in the shell, wherein the shell 1 comprises an insert seat 2, a middle shell 4 and an end cover 9, the middle shell 4 is provided with an outer oil inlet, the end cover 9 is provided with an oil outlet, the rear end of the middle shell 4 is fixedly connected with the insert seat 2, the rear end of the end cover 9 is connected with the front end of the middle shell, a sealing ring is arranged at the joint of the end cover and the middle shell, the diameter of the rear end of the middle shell is larger than that of the front end, the outer oil inlet is located at the front end, a space for placing a coil assembly 5 is formed between the rear end of the middle shell 4 and the oil pipe body 7, the coil assembly comprises a framework and a coil wound on the framework, the two ends of the coil are electrically connected with the insert of the insert seat, and the sealing ring is arranged between the coil framework and the inner wall of the middle shell.

The oil pipe body 7 runs through the whole casing setting, and its rear end blocks with 2 inner walls of plug-in components seat mutually, is equipped with stopcock 20 in it simultaneously, blocks up the one end of oil pipe body, form inside and outside two independent cavities between oil pipe body and the shells inner wall, 1 bottom of casing is equipped with oil outlet 11, oil outlet 11 and inboard cavity 17 intercommunication, 1 circumference of casing is equipped with the outer inlet port 15 with 14 intercommunications of outside cavity, be equipped with the interior inlet port 3 of the inside and outside cavity of intercommunication on the oil pipe body 7, its oil circuit is as follows: the oil spraying device comprises an outer oil inlet, an inner oil inlet, an outer filter screen assembly 16, a double filter screen assembly, an armature 6, a push rod 8, a coil assembly 5, a valve seat 10, a ball core 13, an oil spraying plate 12 and a valve seat, wherein the outer oil inlet is formed in the outer oil inlet, the inner oil inlet is formed in the inner side of the inner oil inlet, the armature 6 is in sliding fit with the inner wall of the oil pipe body, the push rod 8 is arranged at the front end of the armature and is in linkage fit with the armature, the coil assembly 5 is used for driving the armature to move, the valve seat 10 is arranged between the front end of the oil pipe body and the oil outlet, the ball core is arranged in the valve seat, the front end of the push rod is in jacking fit with the ball core, the oil spraying plate 12 with small holes is arranged between the valve seat and the oil outlet, the armature is driven to move through the coil assembly, and then jacking of the ball core by the push rod is relieved, so that oil is sprayed through a gap opened between the ball core and the valve seat and is sprayed through the stroke of the oil spraying plate.

The bottom of the valve seat is provided with a groove 23, the oil injection plate 12 is embedded in the groove, a space matched with the oil injection plate is formed between the end cover and the groove, the oil injection plate can be firmly fixed between the end cover and the groove, the thickness of the groove is matched with the thickness of the oil injection plate, and the front surface and the rear surface of the oil injection plate can be ensured to be tightly attached to the inner wall of the valve seat or the end cover.

The disk seat center is equipped with through-hole 22, through-hole circumference array is equipped with a plurality of breach grooves 21, be equipped with circular arc transition surface 24 between the upper end of through-hole and the bottom in breach groove, circular arc transition surface with the sphere looks adaptation of ball core reduces the impact to the ball core through circular arc transition surface for it is more smooth and easy to produce oil.

The upper end of the valve seat is provided with an insertion part 25 which is embedded into the oil pipe body and is attached to the inner wall of the oil pipe body, and the insertion part is tightly connected with the oil pipe body, so that the bottom of the oil pipe body is communicated with the oil outlet through the valve seat.

The armature iron and the center of the ejector rod are communicated to form an oil path, through holes are formed in the circumferential direction of the lower end of the ejector rod, and oil can enter the oil path of the armature iron and the ejector rod from the inner oil inlet hole and enter the inner side cavity from the through holes.

A limiting piece 18 is inserted at the rear end of the armature, the limiting piece is axially arranged in a through manner, an elastic piece is arranged between the limiting piece and the ejector rod, and the limiting piece plays a role in limiting the elastic piece, so that the ejector rod has a certain displacement relative to the armature.

Outer filter screen subassembly 16 is including can overlapping the sleeve pipe 26 of locating the casing outside, sleeve pipe circumference is equipped with a plurality of openings, sheathed tube inner wall is equipped with and covers open-ended filter screen 27, and the sleeve pipe can overlap the front end of locating middle casing, and its opening part corresponds the setting with outer inlet port, and closely laminates the setting between the outer wall of sheathed tube inner wall and middle casing, plays first heavy filterable effect.

Interior filter screen subassembly is including setting up the stay tube 28 in the oil pipe body is inside, the stay tube outer wall sets up with the internal wall contact of oil pipe, just stay tube circumference is equipped with a plurality of openings, the stay tube inner wall is equipped with covers open-ended filter screen 27, and this stay tube closely laminates with the internal wall of oil pipe, and the inlet port setting in its opening corresponds plays the effect of second heavy filtration.

The examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of the present invention.

Claims

1. An electronic fuel injector, characterized in that: it includes that casing (1) and axial set up the oil pipe body (7) in the casing, form inside and outside two independent cavities between oil pipe body (7) and casing (1) inner wall, the casing bottom is equipped with oil outlet (11), oil outlet (11) and inboard cavity (17) intercommunication, casing (1) circumference is equipped with outer inlet port (15) with outside cavity (14) intercommunication, be equipped with interior inlet port (3) of the inside and outside cavity of intercommunication on oil pipe body (7), the inboard of interior inlet port (3) is equipped with interior filter screen subassembly (19), the outside of outer inlet port (15) is equipped with outer filter screen subassembly (16), just be equipped with in oil pipe body (7) and constitute slip complex armature (6) and set up at armature front end rather than linkage complex ejector pin (8) with oil pipe body (7) inner wall, the oil pipe body (7) outside is equipped with coil assembly (5) that are used for driving the armature action, be equipped with between the front end and the oil outlet of oil pipe body (10), be equipped with roof ball core (13) in the disk seat, the front end and the ejector pin set up, be equipped with the roof pressure ball core setting, be equipped with the disk seat oil outlet (12) between disk seat and the oil pipe.

2. The electronic fuel injector of claim 1, wherein: the bottom of the valve seat is provided with a groove (23), and the oil spraying plate (12) is embedded in the groove (23).

3. The electronic fuel injector of claim 1, wherein: the ball valve is characterized in that a through hole (22) is formed in the center of the valve seat, a plurality of notch grooves (21) are formed in the circumferential array of the through hole (22), an arc transition surface (24) is arranged between the upper end of the through hole and the bottom of each notch groove, and the arc transition surface is matched with the spherical surface of the ball core.

4. The electronic fuel injector of claim 1, wherein: the oil pipe is characterized in that an inserting portion (25) is arranged at the upper end of the valve seat, and the inserting portion (25) is embedded into the oil pipe body (7) and is attached to the inner wall of the oil pipe body.

5. The electronic fuel injector of claim 1, wherein: the armature (6) is communicated with the center of the ejector rod to form an oil way, and through holes are formed in the circumferential direction of the lower end of the ejector rod.

6. The electronic fuel injector of claim 1, wherein: a limiting piece (18) is inserted at the rear end of the armature (6), the limiting piece is arranged in an axially through mode, and an elastic piece is arranged between the limiting piece and the ejector rod.

7. The electronic fuel injector of claim 1, wherein: the tail end of the oil pipe body is provided with a pipe plug (20).

8. The electronic fuel injector of claim 1, wherein: the casing is including plug-in components seat (2) that connect gradually, middle casing (4) that are equipped with outer inlet port and end cover (9) that are equipped with the oil outlet.

9. The electronic fuel injector of claim 1, wherein: outer filter screen subassembly (16) are including can overlapping sleeve pipe (26) of locating the casing outside, sleeve pipe circumference is equipped with a plurality of openings, sheathed tube inner wall is equipped with and covers open-ended filter screen (27).

10. The electronic fuel injector of claim 1, wherein: the inner filter screen component comprises a supporting pipe (28) arranged inside the oil pipe body, the outer wall of the supporting pipe is in contact with the inner wall of the oil pipe body, a plurality of openings are formed in the circumferential direction of the supporting pipe, and a filter screen (27) covering the openings is arranged on the inner wall of the supporting pipe.