CN114320694A - Oil sprayer structure - Google Patents
Oil sprayer structure Download PDFInfo
- Publication number
- CN114320694A CN114320694A CN202111510078.4A CN202111510078A CN114320694A CN 114320694 A CN114320694 A CN 114320694A CN 202111510078 A CN202111510078 A CN 202111510078A CN 114320694 A CN114320694 A CN 114320694A
- Authority
- CN
- China
- Prior art keywords
- fuel injector
- framework
- cavity
- sleeve
- adjusting sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000446 fuel Substances 0.000 claims abstract description 65
- 239000003381 stabilizer Substances 0.000 claims abstract description 13
- 239000004744 fabric Substances 0.000 claims abstract description 8
- 239000004677 Nylon Substances 0.000 claims description 6
- 229920001778 nylon Polymers 0.000 claims description 6
- 230000008093 supporting effect Effects 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000010349 pulsation Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000013016 damping Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
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- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to an automobile engine, in particular to a fuel injector structure. The structure comprises a fuel injector component and a fuel injector adapter sleeve; the fuel injector connecting sleeve is of a bottle-shaped structure, and is sequentially provided with a through fuel inlet channel and a through fuel cavity from top to bottom; the fuel injector assembly is positioned in the oil cavity; the fuel injector assembly comprises an adjusting sleeve, a voltage stabilizer and a fuel injector filter screen arranged in a cavity of the adjusting sleeve; the fuel injector filter screen comprises a hollow tubular framework; the framework comprises a head framework, a skirt framework and a bottom framework; the skirt framework is embedded with filter cloth with small holes; the upper part of the head framework is provided with an opening, and the lower part of the bottom framework is sealed; the pressure stabilizer is of a stepped cylindrical structure with a small upper part and a large lower part, and a throttling hole is formed in the axial direction. The invention has obvious throttling effect in the oil cavity of the oil sprayer, effectively reduces the hydraulic pulsation in the oil cavity of the oil sprayer, realizes the aim of noise reduction, and simultaneously improves the fixing stability of the filter screen of the oil sprayer.
Description
Technical Field
The invention relates to an automobile engine, in particular to a fuel injector structure.
Background
In order to meet the requirements of stricter emission regulations, the fuel injection pressure of the gasoline direct injection engine is increased from 200bar to 350bar, when the fuel injector works, the vibration caused by the hydraulic pulsation generated in the opening and closing process of the needle valve is increased, and the vibration is transmitted out through an assembly structure between the needle valve and a cylinder cover and air to form vibration noise; therefore, in order to reduce the vibration noise of the fuel injector during operation and improve the user experience, the hydraulic pulsation in the fuel cavity of the fuel injector needs to be reduced.
Disclosure of Invention
The invention aims to solve the technical problems that the oil sprayer filter screen is poor in fixing stability, and vibration and noise are generated due to hydraulic pulsation in the working process of the oil sprayer.
The technical scheme of the invention is that the fuel injector structure comprises a fuel injector component and a fuel injector connecting sleeve; the fuel injector connecting sleeve is of a bottle-shaped structure, and is sequentially provided with a through fuel inlet channel and a through fuel cavity from top to bottom; the fuel injector assembly is positioned in the oil cavity;
the fuel injector assembly comprises an adjusting sleeve, a voltage stabilizer and a fuel injector filter screen arranged in a cavity of the adjusting sleeve;
the fuel injector filter screen comprises a hollow tubular framework; the framework comprises a head framework, a skirt framework and a bottom framework; the skirt framework is embedded with filter cloth with small holes; the upper part of the head framework is provided with an opening, and the lower part of the bottom framework is sealed;
the pressure stabilizer is of a stepped cylindrical structure with a small upper part and a large lower part, and a throttling hole is formed in the axial direction.
Furthermore, the upper port of the adjusting sleeve is matched with the head skeleton; the cavity is communicated with the lower port of the adjusting sleeve.
Specifically, the upper port is in interference fit with the head skeleton, and plays a role in fixing the filter screen of the oil injector; the lower bottom surface of the cavity plays a supporting role for the bottom framework.
Furthermore, the pressure stabilizer is pressed on the adjusting sleeve, and the throttling hole is communicated with the opening of the framework.
The lower end face of the voltage stabilizer is pressed on the upper end face of the adjusting sleeve and connected in a welding mode.
Further, the outer surface of the adjusting sleeve is in interference fit with the inner wall surface of the oil cavity.
Specifically, the head skeleton is made of metal, the skirt part skeleton and the bottom skeleton are made of nylon, and the filter cloth is made of nylon.
The invention has the beneficial effects that: when fuel passes through the orifice of the pressure stabilizer, the fuel passes through the necking, the damping of the flow channel is increased, the rapid change fluctuation of fluid (fuel) is stabilized through the damping, and at the moment, the hydraulic fluctuation in the oil cavity of the oil sprayer can be effectively reduced, namely, the vibration and the noise transmitted outwards through the oil sprayer are reduced, so that the user experience is effectively improved, and the complaints are reduced. Meanwhile, the stability of the filter screen can be improved through the supporting effect of the cavity of the adjusting sleeve on the framework of the filter screen of the oil sprayer, so that the noise is reduced. The invention has obvious throttling effect in the oil cavity of the oil sprayer, effectively reduces the hydraulic pulsation in the oil cavity of the oil sprayer, realizes the aim of noise reduction, and simultaneously improves the fixing stability of the filter screen of the oil sprayer.
Drawings
FIG. 1 is a schematic diagram of a fuel injector adapter sleeve structure;
FIG. 2 is a cross-sectional view of a fuel injector adapter sleeve; the arrows indicate the fuel flow direction;
FIG. 3 is a schematic diagram of a fuel injector assembly;
FIG. 4, a cross-sectional view of a fuel injector assembly; the arrows indicate the fuel flow direction;
FIG. 5 is a schematic diagram of a fuel injector screen structure;
FIG. 6 is a schematic diagram of a regulator structure;
FIG. 7 is a cross-sectional view of the potentiostat; the arrows indicate the fuel flow direction;
FIG. 8 is a schematic view of the structure of the adjusting sleeve;
FIG. 9 is a cross-sectional view of the adjustment sleeve; the arrows indicate the fuel flow direction;
FIG. 10 is a cross-sectional view of the structure of the present invention;
the labels in the figure are: the fuel injector assembly 1 is provided with a fuel injector,
the fuel injector oil receiving sleeve 2, the oil inlet passage 21, the oil chamber 22, the inner wall surface 23 of the oil chamber,
a fuel injector filter screen 3, a head skeleton 31, a skirt skeleton 32, a bottom skeleton 33, filter cloth 34, an opening 35,
the regulator 4, the orifice 41, the regulator lower end face 42,
the adjusting sleeve comprises an adjusting sleeve 5, an adjusting sleeve upper port 51, an adjusting sleeve lower port 52, an adjusting sleeve upper end surface 53, a cavity 55 and an adjusting sleeve inner supporting surface 56.
Detailed Description
Example Assembly and use of the Fuel injector Structure of the present invention
As shown in fig. 10, includes a fuel injector assembly 1 and a fuel injector nipple 2; as shown in fig. 1 and 2, the fuel injector adapter sleeve 2 is of a bottle-shaped structure, and is provided with a through fuel inlet channel 21 and a through fuel cavity 22 in sequence from top to bottom; the fuel injector assembly 1 is positioned in the oil cavity 22; as shown in fig. 3 and 4, the fuel injector assembly 1 includes an adjusting sleeve 5, a pressure stabilizer 4 and a fuel injector filter screen 3 installed in a cavity 55 of the adjusting sleeve 5; as shown in fig. 5, the injector screen 3 comprises a hollow tubular skeleton; the skeleton comprises a head skeleton 31, a skirt skeleton 32 and a bottom skeleton 33; a filter cloth 34 with small holes is embedded on the skirt framework 32; the upper part of the head framework 31 is provided with an opening 35, and the lower part of the bottom framework 33 is sealed; as shown in fig. 6 and 7, the regulator 4 has a stepped cylindrical structure with a small top and a large bottom, and has an orifice 41 formed along the axial direction.
As a preferred embodiment, as shown in fig. 8 and 9, the upper port 51 of the adjusting sleeve 5 is engaged with the head skeleton 31; the lower port 52 of the cavity 55 adjusting sleeve 5 is communicated. Specifically, the upper port 51 is in interference fit with the head skeleton 31, and plays a role in fixing the filter screen 3 of the fuel injector; the cavity bottom surface 56 supports the bottom armature 33.
In a preferred embodiment, as shown in fig. 4, the regulator 4 is press-fitted to the adjustment sleeve 5, and the orifice 41 penetrates the opening 35 of the frame. The lower end face 42 of the voltage stabilizer is pressed on the upper end face 53 of the adjusting sleeve and connected in a welding mode. The adjustment sleeve outer surface 54 is in interference fit with the oil chamber inner wall surface 23.
In another preferred embodiment, the head frame 31 is made of metal, the skirt frame 32 and the bottom frame 33 are made of nylon, and the filter cloth 34 is made of nylon.
Claims (7)
1. A fuel injector structure comprises a fuel injector component (1) and a fuel injector adapter sleeve (2); the fuel injector connecting sleeve (2) is of a bottle-shaped structure, and is sequentially provided with a through oil inlet channel (21) and an oil cavity (22) from top to bottom; the fuel injector assembly (1) is positioned in the oil cavity (22);
the fuel injector component (1) comprises an adjusting sleeve (5), a voltage stabilizer (4) and a fuel injector filter screen (3) arranged in a cavity (55) of the adjusting sleeve (5);
the fuel injector filter screen (3) comprises a hollow tubular framework; the framework comprises a head framework (31), a skirt framework (32) and a bottom framework (33); filter cloth (34) with small holes is embedded on the skirt framework (32); an opening (35) is formed in the upper portion of the head framework (31), and the lower portion of the bottom framework (33) is sealed;
the pressure stabilizer (4) is of a stepped cylindrical structure with a small upper part and a large lower part, and is provided with a throttling hole (41) along the axial direction.
2. The fuel injector arrangement according to claim 1, characterized in that the upper port (51) of the adjustment sleeve (5) cooperates with the head skeleton (31); the cavity (55) is communicated with the lower port (52) of the adjusting sleeve (5).
3. The injector structure according to claim 1, characterized in that the upper port (51) is in interference fit with the head skeleton (31) and functions to fix the injector screen (3); the cavity lower bottom surface (56) plays a supporting role for the bottom framework (33).
4. The fuel injector arrangement as claimed in claim 1, characterized in that the pressure stabilizer (4) is press-fitted on the adjusting sleeve (5), the throttle bore (41) being in communication with the opening (35) of the skeleton.
5. A fuel injector arrangement according to claim 4, characterized in that the stabiliser lower end surface (42) is press-fitted on the adjustment sleeve upper end surface (53) and is connected thereto by welding.
6. The fuel injector structure according to claim 1, characterized in that the adjusting sleeve outer surface (54) is interference-fitted with the oil chamber inner wall surface (23).
7. The fuel injector structure according to claim 1, characterized in that the head skeleton (31) is made of metal, the skirt skeleton (32) and the bottom skeleton (33) are made of nylon, and the filter cloth (34) is made of nylon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111510078.4A CN114320694A (en) | 2021-12-10 | 2021-12-10 | Oil sprayer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111510078.4A CN114320694A (en) | 2021-12-10 | 2021-12-10 | Oil sprayer structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114320694A true CN114320694A (en) | 2022-04-12 |
Family
ID=81050896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111510078.4A Pending CN114320694A (en) | 2021-12-10 | 2021-12-10 | Oil sprayer structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114320694A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009000183A1 (en) * | 2009-01-13 | 2010-07-15 | Robert Bosch Gmbh | Fuel injection valve for fuel injection systems of internal combustion engines, particularly for direct injection of fuel in combustion chamber of internal combustion engine, has actuator and flow choke provided in fuel supply |
| CN103061937A (en) * | 2011-10-24 | 2013-04-24 | 联合汽车电子有限公司 | Oil injector screen cloth structure for gasoline direct injection engine |
| CN105829701A (en) * | 2013-12-13 | 2016-08-03 | 罗伯特·博世有限公司 | Fuel injection valve |
| CN108240275A (en) * | 2016-12-23 | 2018-07-03 | 罗伯特·博世有限公司 | Fuel injection valve |
| CN214092111U (en) * | 2020-11-03 | 2021-08-31 | 联合汽车电子有限公司 | Oil sprayer and inner supporting rod |
-
2021
- 2021-12-10 CN CN202111510078.4A patent/CN114320694A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009000183A1 (en) * | 2009-01-13 | 2010-07-15 | Robert Bosch Gmbh | Fuel injection valve for fuel injection systems of internal combustion engines, particularly for direct injection of fuel in combustion chamber of internal combustion engine, has actuator and flow choke provided in fuel supply |
| CN103061937A (en) * | 2011-10-24 | 2013-04-24 | 联合汽车电子有限公司 | Oil injector screen cloth structure for gasoline direct injection engine |
| CN105829701A (en) * | 2013-12-13 | 2016-08-03 | 罗伯特·博世有限公司 | Fuel injection valve |
| CN108240275A (en) * | 2016-12-23 | 2018-07-03 | 罗伯特·博世有限公司 | Fuel injection valve |
| CN214092111U (en) * | 2020-11-03 | 2021-08-31 | 联合汽车电子有限公司 | Oil sprayer and inner supporting rod |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220412 |
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| RJ01 | Rejection of invention patent application after publication |