Automotive fuel pump based on retractable fuel delivery technology

Abstract

This utility model relates to an automotive fuel pump based on retractable fuel delivery technology, belonging to the field of fuel pump technology. It includes an impeller comprising multiple rotatably mounted blades; and an angle adjustment assembly linked to the blades to adjust the blade angle. The angle adjustment assembly includes: a sleeve post connected to the blades and moving in response to centrifugal force when the impeller rotates; a fixed post on which the sleeve post is fitted, and an S-shaped groove on the fixed post; a guide ring on which the guide ring is fitted; a fixing pin on the guide ring and slidingly engaging with the S-shaped groove to convert the movement of the sleeve post into blade angle rotation; a contact plate; and a spring positioned between the contact plate and the guide ring to provide a restoring force to the guide ring opposite to the direction of the centrifugal force. This utility model achieves blade angle adjustment through a mechanical structure, thereby adjusting the fuel delivery rate of the fuel pump.

Description

Technical Field

[0001] This application relates to the field of fuel pump technology, and more particularly to automotive fuel pumps based on retractable fuel delivery technology. Background Technology

[0002] A retractable fuel pump is a fuel pump system that adapts to changes in fuel delivery path, flow rate, or pressure through structural design or dynamic adjustment mechanisms. Its core feature is the ability to dynamically adjust fuel delivery parameters based on vehicle operating conditions, installation space, or fuel demand, thereby improving the efficiency and reliability of the fuel system. Centrifugal pumps are typically used in automotive fuel pumps to deliver fuel to the fuel system.

[0003] However, existing automotive fuel pumps have significant problems in fuel delivery regulation. Fuel pump regulation is not an independent operation, but a dynamic, coordinated process achieved through precise ECU (Engine Control Unit) control and fuel system hardware coordination. Its core objective is to ensure that the fuel delivery volume always matches the engine's real-time operating conditions (such as engine speed, load, and intake air volume). As the "actuator" of fuel delivery regulation, the fuel pump's internal electronic components, such as the motor, drive module, and pressure sensors, are directly subjected to load and environmental pressure, thus having a high probability of failure. Once these critical components fail, the fuel delivery volume cannot be regulated, disrupting the coordinated balance. This not only leads to fuel delivery regulation failure but may also trigger a cascading effect, severely impacting the reliability of the fuel pump and the normal operation of the vehicle.

[0004] Therefore, it is necessary to propose an automotive fuel pump based on scalable fuel delivery technology to solve the above problems. Utility Model Content

[0005] This application provides an automotive fuel pump based on retractable fuel delivery technology. This is to address the technical problem in related technologies where the probability of damage to electronic components such as the motor, drive module, and pressure sensor inside the fuel pump is high, resulting in the inability to adjust the fuel delivery volume and affecting the reliability of the fuel pump and the normal operation of the vehicle.

[0006] This application provides an automotive fuel pump based on retractable fuel delivery technology, including an impeller with multiple rotatably arranged blades; and an angle adjustment assembly, which is a mechanical structure linked to the blades to adjust the angle of the blades; wherein the angle adjustment assembly includes: a sleeve post connected to the blades and moving in response to centrifugal force when the impeller rotates; a fixed post on which the sleeve post is sleeved and has an S-shaped groove; a guide ring on which the guide ring is sleeved; a fixing pin on which the fixing pin is disposed on the guide ring and slides with the S-shaped groove to convert the movement of the sleeve post into the angular rotation of the blades; an abutment plate; and a spring disposed between the abutment plate and the guide ring to provide a restoring force to the guide ring opposite to the direction of the centrifugal force.

[0007] The technical solutions described in this application embodiment have at least the following technical effects: the blade angle can be adjusted through a purely mechanical structure, thereby adjusting the fuel pump's fuel delivery volume, avoiding the problem of fuel delivery volume adjustment failure caused by the easy damage of traditional electronic components, and improving the reliability of the fuel pump.

[0008] In this embodiment, the impeller includes a central shaft, and the plurality of blades are rotatably disposed around the central shaft.

[0009] This technical solution clarifies the specific arrangement of the blades on the impeller, providing a basic structure for blade angle adjustment.

[0010] In this embodiment, it further includes: a protective sleeve, which is fixedly connected to the central shaft and fitted onto the outer wall of the sleeve post; and a sealing ring, which is disposed between the sleeve post and the protective sleeve.

[0011] This technical solution can protect and seal the connecting column, preventing fuel leakage and impurities from entering, thus improving the stability and service life of the mechanism.

[0012] In this embodiment, the system further includes: a pump housing, in which the impeller is disposed; and a drive unit connected to the pump housing and used to drive the impeller to rotate.

[0013] This technical solution provides the overall structure of the fuel pump and clarifies the impeller's installation position and drive method.

[0014] In this embodiment, the fixing column is coaxially arranged with the central axis.

[0015] This technical solution ensures the alignment of the fixed column and the central axis, which is beneficial to the stable operation of the angle adjustment mechanism.

[0016] In this embodiment, the spring is sleeved on the fixed post.

[0017] This technical solution clarifies the installation position of the spring, enabling it to effectively provide restoring force.

[0018] In this embodiment, the S-shaped groove is formed on the outer peripheral wall of the fixed column.

[0019] This technical solution clarifies the specific location of the S-groove, facilitating the sliding fit of the fixing pin.

[0020] In this embodiment, the fixing pin extends from the inner wall of the guide ring and into the S-shaped groove.

[0021] This technical solution clarifies the cooperation method between the fixing pin and the S-groove, ensuring the effectiveness of angle conversion.

[0022] In this embodiment, the abutment plate is disposed at one end of the fixing post, and one end of the spring abuts against the abutment plate.

[0023] This technical solution clarifies the relative positions of the abutment plate and the spring, ensuring that the spring can function properly.

[0024] In this embodiment, the roots of the plurality of blades are respectively connected to the sleeve post.

[0025] This technical solution clarifies the connection method between the blade and the socket, ensuring that the blade can rotate as the socket moves.

[0026] Compared with existing technologies, the advantages of this utility model are:

[0027] 1. Improved reliability: By employing a purely mechanical structure to achieve blade angle adjustment, the vulnerability of traditional electronic components (such as motors, drive modules, and pressure sensors) to damage in the harsh operating environment of the fuel pump is avoided. This significantly reduces the risk of fuel delivery adjustment failure due to electronic component malfunction, thereby improving the reliability and stability of the entire fuel pump system.

[0028] 2. Simplified system: Eliminates the need for complex ECU control and electronic feedback systems, reducing the overall complexity of the fuel pump and minimizing potential points of failure.

[0029] 3. Reduced maintenance costs: Since mechanical structures are more durable than electronic components and have lower maintenance costs, they can effectively reduce the long-term operation and maintenance costs of automotive fuel pumps.

[0030] 4. Fast response speed: The mechanical structure responds directly and quickly to centrifugal force, enabling more immediate and precise adjustment of fuel delivery to adapt to real-time changes in engine operating conditions.

[0031] In summary, the automotive fuel pump of this invention, through its innovative mechanical angle adjustment component, effectively solves the problem of poor reliability in fuel pump delivery adjustment in the prior art, providing a more stable, reliable, and economical solution for automotive fuel systems. Attached Figure Description

[0032] Figure 1 A three-dimensional structural schematic diagram of an automotive fuel pump based on retractable oil delivery technology provided for an embodiment of this application;

[0033] Figure 2 A three-dimensional structural schematic diagram of the impeller provided in an embodiment of this application;

[0034] Figure 3 A cross-sectional structural schematic diagram of the angle adjustment component provided in the embodiments of this application;

[0035] Figure 4 This is a cross-sectional structural diagram of the sleeve post and guide ring provided in an embodiment of this application.

[0036] The following are the labeling elements in the figure:

[0037] 1. Pump casing; 11. Drive unit; 12. Impeller; 121. Central shaft; 122. Blade; 2. Angle adjustment assembly; 21. Fixing column; 22. S-groove; 23. Abutment plate; 24. Sleeve column; 25. Guide ring; 26. Fixing pin; 27. Spring; 28. Protective sleeve; 29. ​​Sealing ring. Detailed Implementation

[0038] Existing automotive fuel pumps have significant problems in fuel delivery regulation. Fuel pump regulation is not an independent operation, but a dynamic, coordinated process achieved through precise ECU (Engine Control Unit) control and fuel system hardware integration. Its core objective is to ensure that the fuel delivery volume always matches the engine's real-time operating conditions (such as engine speed, load, and intake air volume). As the "actuator" of fuel delivery regulation, the fuel pump's internal electronic components, such as the motor, drive module, and pressure sensors, are directly subjected to load and environmental pressure, making them highly susceptible to failure. Damage to these critical components directly leads to an inability to regulate fuel delivery, disrupting the coordinated balance. This not only causes fuel delivery regulation failure but can also trigger a cascading effect, severely impacting the reliability of the fuel pump and the normal operation of the vehicle.

[0039] Based on this, in order to improve the technical problem in the related technology that the electronic components inside the fuel pump, such as the motor, drive module, and pressure sensor, have a high probability of failure, resulting in the inability to adjust the fuel delivery volume and affecting the reliability of the fuel pump and the normal operation of the vehicle, the embodiments of this application provide the following solutions.

[0040] Please refer to the following: Figures 1 to 4 This application provides an automotive fuel pump based on retractable fuel delivery technology. The retractable fuel delivery technology includes an impeller 12 with multiple rotatably arranged blades 122; and an angle adjustment assembly 2, which is a mechanical structure linked to the blades 122 to adjust their angle. The angle adjustment assembly 2 includes: a sleeve post 24 connected to the blades and moving in response to centrifugal force when the impeller 12 rotates; and a fixing post 21. The sleeve post 24 is sleeved on the fixed post 21, and the fixed post 21 has an S-shaped groove 22; a guide ring 25 is sleeved on the sleeve post 24; a fixing pin 26 is disposed on the guide ring 25 and slides with the S-shaped groove 22 to convert the movement of the sleeve post 24 into the angular rotation of the blade 122; an abutment plate 23; and a spring 27 is disposed between the abutment plate 23 and the guide ring 25 to provide the guide ring 25 with a restoring force opposite to the direction of centrifugal force.

[0041] The automotive fuel pump based on retractable fuel delivery technology provided in this application embodiment, in practical applications, when the impeller 12 speed increases, the centrifugal force on the blades 122 increases, driving the sleeve post 24 to move outward. The movement of the sleeve post 24 drives the guide ring 25, and the fixing pin 26 on the guide ring 25 slides within the S-shaped groove 22 of the fixing post 21. Due to the special shape of the S-shaped groove 22, the sliding of the fixing pin 26 converts the axial movement of the sleeve post 24 into the rotation of the blades 122, increasing the angle of the blades 122. At the same time, the guide ring 25 compresses the return spring 27 during movement. The elastic force of the return spring 27 is opposite to the direction of the centrifugal force, providing a restoring force. When the impeller 12 speed decreases, the centrifugal force decreases, the elastic force of the return spring 27 pushes the guide ring 25 back to its original position, and the fixing pin 26 slides in the opposite direction within the S-shaped groove 22, pulling the blades 122 back to its original position, thus reducing the angle of the blades 122. Through this mechanical linkage mechanism, the angle of the blade 122 can be adaptively adjusted according to the rotational speed of the impeller 12, thereby precisely controlling the fuel pump's fuel delivery volume.

[0042] In this embodiment, the impeller 12 includes a central shaft 121, and the plurality of blades 122 are rotatably disposed around the central shaft 121.

[0043] This configuration clarifies the specific arrangement of the blades 122 on the impeller 12, providing a basic structure for adjusting the blade angle. It helps optimize the overall balance of the impeller 12, reducing uneven centrifugal force that may occur during high-speed rotation, thereby effectively reducing impeller vibration and improving the operational stability of the fuel pump. Simultaneously, the circumferential arrangement of the blades 122 around the central shaft 121 provides a more direct and effective basis for the linkage of the angle adjustment assembly 2, enabling it to more precisely control the rotation of each blade 122, thus achieving fine-tuning of the fuel pump's performance.

[0044] In this embodiment, it also includes: a protective sleeve 28, which is fixedly connected to the central shaft 121 and sleeved on the outer wall of the sleeve post 24; and a sealing ring 29, which is disposed between the sleeve post 24 and the protective sleeve 28.

[0045] This design protects and seals the socket 24, preventing fuel leakage and impurities from entering, thus improving the stability and service life of the mechanism. The protective sleeve 28 is designed to be fixedly connected to the central shaft 121, meaning its position is relatively stable and will not shift significantly with the movement of the socket 24. The protective sleeve 28 is fitted onto the outer wall of the socket 24, forming a relatively enclosed space that isolates the socket 24 from the external environment. The sealing ring 29 is positioned between the socket 24 and the protective sleeve 28, providing a tight seal to prevent external impurities or fuel from entering the mating gap between the socket 24 and the fixed post 21, as well as the mating gap between the guide ring 25 and the socket 24.

[0046] In this embodiment, the system further includes: a pump housing 1, in which the impeller 12 is disposed; and a drive member 11, which is connected to the pump housing 1 and is used to drive the impeller 12 to rotate.

[0047] This configuration provides the overall structure of the fuel pump and clarifies the installation position and drive method of the impeller 12.

[0048] In this embodiment, the fixing post 21 is coaxially arranged with the central shaft 121.

[0049] This configuration ensures the alignment of the fixed column 21 with the central shaft 121, which is beneficial to the stable operation of the angle adjustment mechanism.

[0050] In this embodiment, the spring 27 is sleeved on the fixed post 21.

[0051] This configuration clearly defines the installation position of spring 27, enabling it to effectively provide restoring force.

[0052] In this embodiment, the S-shaped groove 22 is formed on the outer peripheral wall of the fixed column 21.

[0053] This design clarifies the specific location of the S-groove 22, facilitating the sliding fit of the fixing pin 26.

[0054] In this embodiment, the fixing pin 26 extends from the inner wall of the guide ring 25 and into the S-shaped groove 22.

[0055] This configuration clarifies the cooperation between the fixing pin 26 and the S-groove 22, ensuring the effectiveness of angle conversion.

[0056] In this embodiment, the abutment plate 23 is disposed at one end of the fixing post 21, and one end of the spring 27 abuts against the abutment plate 23.

[0057] This configuration clearly defines the relative positions of the abutment plate 23 and the spring 27, ensuring that the spring 27 can function properly.

[0058] In this embodiment, the root portions of the plurality of blades 122 are respectively connected to the sleeve post 24.

[0059] This configuration clarifies the connection method between the blade 122 and the socket 24, ensuring that the blade 122 can rotate as the socket 24 moves.

[0060] The operating principle of a locomotive fuel pump based on retractable fuel transfer technology is as follows:

[0061] During the process of using a car fuel pump to transport fuel, the impeller 12 is driven to rotate by the drive component 11 inside the pump housing 1, thereby transporting the fuel in the fuel tank. The angle of the blade 122 is adjusted by the angle adjustment component 2 between the blade 122 and the central shaft 121 in the impeller 12. A passive adaptive adjustment method is adopted to realize the dynamic change of the blade 122 angle with parameters such as fuel pressure and impeller 12 speed.

[0062] During the process of adjusting the angle of the blade 122, when the speed of the impeller 12 increases, such as when the engine accelerates rapidly, the centrifugal force on the blade 122 increases. At this time, the blade 122 drives the sleeve post 24 to move outward. The guide ring 25 set on the sleeve post 24 slides in the S-shaped groove 22 through the fixing pin 26. At this time, the guide ring 25 and the abutment plate 23 compress the spring spring 27, and the angle of the blade 122 increases, thereby increasing the oil delivery volume.

[0063] When the impeller 12 speed decreases, such as idling, the centrifugal force decreases, the spring force of the return spring 27 pushes the guide ring 25, the fixing pin 26 on the guide ring 25 moves in the S-shaped groove 22, pulling the blade 122 back to its original position, the angle of the blade 122 decreases, and thus the oil delivery rate decreases.

[0064] Meanwhile, a protective sleeve 28 is also fitted on the outer wall of the sleeve post 24. The protective sleeve 28 is fixedly connected to the central shaft 121. A sealing ring 29 is also provided on the outer wall of the sleeve post 24 to achieve a seal between the sleeve post 24 and the protective sleeve 28.

[0065] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automotive fuel pump based on retractable fuel delivery technology, characterized in that, The device includes an impeller (12) comprising a plurality of rotatably arranged blades (122); and an angle adjustment assembly (2) linked to the blades (122) to adjust the angle of the blades (122); wherein the angle adjustment assembly (2) comprises: a sleeve post (24) connected to the blades (122) and moving in response to centrifugal force when the impeller (12) rotates; and a fixed post (21) on which the sleeve post (24) is sleeved, and on which the fixed post (21) is... The device includes an S-shaped groove (22); a guide ring (25) sleeved on the connecting post (24); a fixing pin (26) disposed on the guide ring (25) and slidingly engaged with the S-shaped groove (22) to convert the movement of the connecting post (24) into the angular rotation of the blade (122); an abutment plate (23); and a spring (27) disposed between the abutment plate (23) and the guide ring (25) to provide the guide ring (25) with a restoring force opposite to the direction of centrifugal force.

2. The automotive fuel pump based on retractable oil delivery technology according to claim 1, characterized in that: The impeller (12) includes a central shaft (121), and a plurality of blades (122) are rotatably disposed around the central shaft (121).

3. The automotive fuel pump based on retractable oil delivery technology according to claim 2, characterized in that, Also includes: A protective sleeve (28) is fixedly connected to the central shaft (121) and sleeved on the outer wall of the sleeve post (24); and a sealing ring (29) is disposed between the sleeve post (24) and the protective sleeve (28).

4. The automotive fuel pump based on retractable oil delivery technology according to claim 1, characterized in that, Also includes: Pump casing (1), the impeller (12) is disposed inside the pump casing (1); as well as A drive unit (11) is connected to the pump housing (1) and is used to drive the impeller (12) to rotate.

5. The automotive fuel pump based on retractable oil delivery technology according to claim 2, characterized in that: The fixed column (21) is coaxially arranged with the central axis (121).

6. The automotive fuel pump based on retractable oil delivery technology according to claim 1, characterized in that: The spring (27) is sleeved on the fixed post (21).

7. The automotive fuel pump based on retractable oil delivery technology according to claim 1, characterized in that: The S-shaped groove (22) is formed on the outer peripheral wall of the fixed column (21).

8. The automotive fuel pump based on retractable oil delivery technology according to claim 1, characterized in that: The fixing pin (26) extends from the inner wall of the guide ring (25) and into the S-groove (22).

9. The automotive fuel pump based on retractable oil delivery technology according to claim 1, characterized in that: The abutment plate (23) is disposed at one end of the fixed post (21), and one end of the spring (27) abuts against the abutment plate (23).

10. The automotive fuel pump based on retractable oil delivery technology according to claim 1, characterized in that: The root portions of the plurality of blades (122) are respectively connected to the sleeve post (24).

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