Anti-blocking oil nozzle based on gearbox
By incorporating a filter assembly and a limiting assembly into the fuel injector, and utilizing elastic elements to achieve detachable and secure filter plates, the fuel injector clogging problem is solved, service life is extended, and filtration effectiveness is maintained.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CARLSON PRECISION MACHINERY TECHNOLOGY (JURONG) CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-04-17
AI Technical Summary
Fuel injectors are prone to clogging due to impurities caused by differences in fuel quality after prolonged use, and current technology is insufficient to effectively prevent and remove these blockages.
A gearbox-based anti-clogging fuel injector was designed. By setting a filter assembly, including a filter plate and a limiting assembly, inside the sealing sleeve, and using elastic elements to achieve detachable fixing and cleaning of the filter plate, the fuel is effectively filtered before being injected into the intake manifold.
It effectively prevents fuel injector clogging, extends service life, and facilitates filter plate disassembly and cleaning, maintaining filtration performance.
Smart Images

Figure CN224134758U_ABST
Abstract
Description
Technical Field
[0001] This utility model specifically relates to an anti-clogging fuel injector based on a gearbox. Background Technology
[0002] The fuel injector itself is a normally closed valve (a normally closed valve means that the valve is always closed when there is no input control signal; while a normally open valve is always open when there is no input control signal), and the opening and closing of the valve is controlled by the up and down movement of a valve needle.
[0003] Fuel injectors are often used in conjunction with external fuel pumps. The fuel pump injects fuel into the fuel injector for spraying. Due to differences in fuel quality, fuel injectors can become clogged with impurities over time due to fuel quality and other reasons. Utility Model Content
[0004] The purpose of this invention is to provide a gearbox-based anti-clogging fuel injector to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a gearbox-based anti-clogging fuel injector, including a fuel distribution pipe, one end of which is an inlet end and the other end is an outlet end, and an insertion end is provided on the outside of the fuel distribution pipe. A sealing sleeve is threadedly connected to the outside of the outlet end, and a filter component is provided inside the sealing sleeve through a limiting component.
[0006] Preferably, the filter assembly includes a filter plate disposed at the opening of the sealing sleeve, and the surface of the filter plate has a plurality of filter holes.
[0007] Preferably, the limiting component includes symmetrical limiting grooves formed on both sides of the filter plate, and sliding grooves are formed on both sides of the limiting grooves.
[0008] Preferably, an elastic element is provided in the limiting groove, and the other end of the elastic element is connected to a limiting block.
[0009] Preferably, the limiting block is provided with sliders on both the left and right sides that are adapted to the sliding groove.
[0010] Preferably, slots for inserting limiting blocks are provided on both outer sides of the sealing sleeve.
[0011] Preferably, the elastic element is a return spring.
[0012] The technical effects and advantages of this utility model are as follows: This gearbox-based anti-clogging fuel injector connects the fuel inlet end to the fuel distribution pipe via threads or snap-fit, and the other end to the fuel injection system. Pressing down on two limiting blocks causes the slider to slide along the length of the groove, moving the limiting blocks towards the limiting groove until they are fully inserted. At this point, the filter plate is inserted into the sealing sleeve. When the limiting block moves to the slot opening, the elastic element rebounds, applying force back to the limiting block, thus inserting it into the slot and fixing the filter plate. Finally, it connects to the engine's air intake through the sealing sleeve. When fuel is injected into the air intake, the filter holes effectively intercept it. Furthermore, the elastic force of the elastic element facilitates easy disassembly of the filter plate and cleaning of the filter holes. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the sealing sleeve of this utility model;
[0015] Figure 3 This is a schematic diagram of the structure of the limiting block of this utility model;
[0016] Figure 4 This is a schematic diagram of the structure of the filter plate of this utility model;
[0017] Figure 5 This is a schematic diagram of the structure of the elastic element of this utility model;
[0018] Figure 6 This utility model Figure 4 A magnified structural diagram of point A in the middle.
[0019] In the diagram: 1. Fuel distribution pipe; 2. Inlet end; 3. Outlet end; 4. Insert end; 5. Sealing sleeve; 6. Filter plate; 7. Filter hole; 8. Limiting groove; 9. Sliding groove; 10. Elastic element; 11. Limiting block; 12. Sliding block; 13. Slot. Detailed Implementation
[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0021] To achieve fuel filtration, refer to Figure 1 , Figure 2 and Figure 3As shown, the system includes a fuel distribution pipe 1, with one end being an inlet 2 and the other end being an outlet 3. A spigot 4 is located on the outer side of the fuel distribution pipe 1. A sealing sleeve 5 is threadedly connected to the outer side of the outlet 3. A filter assembly is installed inside the sealing sleeve 5 via a limiting component. The inlet 2 is connected to the fuel distribution pipe 1 via threads or a snap-fit mechanism, and the other end is connected to the fuel injection system. Pressing the two limiting blocks 11 causes the slider 12 to slide along the length of the groove 9, thereby moving the limiting blocks 11. Move towards the limiting groove 8 until the limiting block 11 is fully inserted into the limiting groove 8. At this time, insert the filter plate 6 into the sealing sleeve 5. When the limiting block 11 moves to the slot 13, the elastic element 10 rebounds and applies the elastic force to the limiting block 11, so that the limiting block 11 can be inserted into the slot 13, thus fixing the filter plate 6. Finally, it is connected to the engine intake port through the sealing sleeve 5. When fuel is injected into the intake port, the filter hole 7 can effectively intercept it, and the filter plate 6 can be easily disassembled by the elastic force of the elastic element 10.
[0022] For easier disassembly and assembly of filter plate 6, please refer to... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the filter assembly includes a filter plate 6 disposed at the opening of the sealing sleeve 5. The surface of the filter plate 6 has several filter holes 7, which effectively filter the fuel, preventing clogging of the fuel injector and extending its service life. The limiting assembly includes symmetrical limiting grooves 8 on both sides of the filter plate 6. Each limiting groove 8 has a sliding groove 9 on both sides. An elastic element 10 is disposed within the limiting groove 8, and the other end of the elastic element 10 is connected to a limiting block 11. The limiting block 11 has sliders 12 on its left and right sides that are adapted to the sliding grooves 9. As the slider 12 slides along the length of the groove 9, it drives the limiting block 11 to move towards the limiting groove 8 until the limiting block 11 is fully inserted into the limiting groove 8. At this time, the filter plate 6 is inserted into the sealing sleeve 5. When the limiting block 11 moves to the opening of the slot 13, the elastic element 10 rebounds, and the elastic force acts on the limiting block 11, so that the limiting block 11 can be inserted into the slot 13, thus completing the fixation of the filter plate 6. The sealing sleeve 5 has slots 13 on both outer sides for the insertion of the limiting block 11. By inserting the limiting block 11 into the slot 13, the limiting block 11 is fixed, thus realizing the installation of the filter plate 6. When disassembling, press the two limiting blocks 11 to squeeze the elastic element 10. The elastic element 10 deforms, allowing the limiting block 11 to be pulled out from the slot 13, thus completing the removal of the filter plate 6. The filter holes 7 on the surface of the filter plate 6 can be cleaned to maintain the filtration performance of the filter holes 7. The elastic element 10 is a reset spring, or a tension spring. Its service life is between 50,000 and 500,000 cycles. Since the filter plate 6 does not need to be removed and installed so many times, the service life of the elastic element 10 is sufficient to support its use.
[0023] In use, first connect the oil inlet 2 to the fuel distribution pipe 1 via threads or clips, and connect the other end to the fuel injection system. Press down the two limit blocks 11. As the slider 12 slides along the length of the slide groove 9, it moves the limit blocks 11 toward the limit groove 8 until the limit blocks 11 are fully inserted into the limit groove 8. At this time, insert the filter plate 6 into the sealing sleeve 5. When the limit block 11 moves to the slot 13, the elastic element 10 rebounds, and the elastic force acts on the limit block 11, so that the limit block 11 can be inserted into the slot 13, thus fixing the filter plate 6. Finally, it is connected to the engine intake port through the sealing sleeve 5. When fuel is injected into the intake port, the filter hole 7 can effectively intercept it. And through the elastic force of the elastic element 10, the filter plate 6 can be disassembled and the filter hole 7 can be cleaned.
[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model.
Claims
1. A gear box based anti-coking fuel injector, characterized in that, It includes a fuel distribution pipe (1), one end of which is an inlet end (2) and the other end is an outlet end (3). A plug end (4) is provided on the outside of the fuel distribution pipe (1). A sealing sleeve (5) is connected to the outside of the outlet end (3) by a thread. A filter assembly is provided inside the sealing sleeve (5) by a limiting component.
2. The anti-coking, gear box based, oil injection nozzle of claim 1, wherein: The filter assembly includes a filter plate (6) disposed at the opening of the sealing sleeve (5), and the surface of the filter plate (6) has a plurality of filter holes (7).
3. The anti-coking, gear box based, oil nozzle of claim 2, wherein: The limiting component includes symmetrical limiting grooves (8) on both sides of the filter plate (6), and sliding grooves (9) are provided on both sides of the limiting grooves (8).
4. The anti-coking, gear box based, oil nozzle of claim 3, wherein: An elastic element (10) is provided in the limiting groove (8), and the other end of the elastic element (10) is connected to a limiting block (11).
5. The anti-coking, gear box based, oil nozzle of claim 4, wherein: The limiting block (11) is provided with sliders (12) on both the left and right sides that are adapted to the sliding groove (9).
6. The anti-coking, gear box based, oil nozzle of claim 5, wherein: The sealing sleeve (5) has slots (13) on both sides for the insertion of the limiting block (11).
7. The anti-coking, gear box based, oil nozzle of claim 4, wherein: The elastic element (10) is a return spring.