An electric fuel injection device suitable for various vehicle models

Abstract

The utility model relates to the field of automobile power system spare and parts manufacturing technology discloses a kind of electric fuel injection carburettors suitable for multiple vehicle models, including electric fuel injection carburettor body, main oil passage, dynamic seal ring group, the top of electric fuel injection carburettor body is fixedly connected with main oil passage, the both sides of main oil passage are fixedly connected with dynamic seal ring group, the outer surface of dynamic seal ring group is connected with first fastening bolt and second fastening bolt by thread groove thread connection. The utility model is operated by the thread cooperation structure of first fastening bolt and thread groove, drives dynamic seal ring group to generate along the even gathering contraction of central axis direction, to realize the coaxiality precision centering of external pipeline and main oil passage, the guiding effect of cooperation movable hole is ensured The quick adaptation of multiple vehicle model interface, the O-ring sealing assembly in elastic deformation groove is completely wrapped around pipeline surface after pressure deformation, form preliminary sealing layer, the design makes pipeline connection error significantly reduced.

Description

Technical Field

[0001] This utility model relates to the field of automotive power system component manufacturing technology, and in particular to an electronic fuel injection carburetor that is compatible with a variety of vehicle models. Background Technology

[0002] With the diversification of power systems for new energy vehicles, the calibration process of hybrid powertrains that couple traditional internal combustion engines and electric motors requires millisecond-level precise control of fuel injection quantity, which necessitates the use of electronic fuel injection carburetors.

[0003] In practical use, similar electronic fuel injection carburetors still have many defects, such as: the unreliable sealing caused by the traditional single bolt connection of the electronic fuel injection carburetor; the uneven stress on the sealing surface caused by single-point tightening; the easy formation of gaps and leakage after long-term vibration; the inability to adapt to material combinations with different expansion coefficients; and the limitation of the fixed throat structure of the traditional electronic fuel injection carburetor to the range of multiple vehicle models. Each engine requires a custom-made carburetor body, resulting in high inventory costs and slow response speed. Therefore, it is necessary to design an electronic fuel injection carburetor that can be adapted to multiple vehicle models. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an electronic fuel injection carburetor that is compatible with various vehicle models.

[0005] This utility model is achieved by the following technical solution: an electronic fuel injection carburetor adapted to multiple vehicle models, including an electronic fuel injection carburetor body, a main fuel delivery channel, and a dynamic sealing ring assembly. The main fuel delivery channel is fixedly connected to the top of the electronic fuel injection carburetor body, and the dynamic sealing ring assembly is fixedly connected to both sides of the main fuel delivery channel. The outer surface of the dynamic sealing ring assembly is threaded with a first fastening bolt and a second fastening bolt through a threaded groove.

[0006] As a further improvement to the above solution, a multi-vehicle model adaptable flange is fixedly connected to the outer surface of the main oil delivery channel, and a dynamic sealing ring assembly is fixedly connected to the outer surface of the multi-vehicle model adaptable flange.

[0007] The above technical solution uses a standardized multi-model adapter flange as a transition interface to achieve compatibility between main oil delivery channels of different specifications and a unified dynamic sealing ring assembly. This structure simplifies the complex pipeline layout in the engine compartment, reduces the number of adapter joints, and lowers fluid resistance loss and leakage risk.

[0008] As a further improvement to the above solution, the dynamic sealing ring assembly has an internal movable hole and a threaded groove on its outer surface.

[0009] Through the above technical solution, the movable hole provides a process channel to facilitate the operation of assembly tools, and at the same time serves as a stress relief area to prevent material fatigue. The threaded groove and the fastening bolt form a helical pair transmission system, which converts the rotational motion into precise linear displacement control and ensures the uniform application of sealing force.

[0010] As a further improvement to the above solution, the inner wall of the dynamic sealing ring assembly is provided with an elastic deformation groove, and an embedded block is inserted into the inner wall of the elastic deformation groove.

[0011] The above technical solution allows for partial replacement of worn parts without scrapping the entire component. The embedded block is made of hard alloy material, which significantly improves the wear resistance of key contact surfaces and extends the maintenance cycle.

[0012] As a further improvement to the above solution, an O-ring sealing assembly is fixedly connected to the outer surface of the embedded block, and the O-ring sealing assembly is evenly arranged on the inner wall of the dynamic sealing ring assembly.

[0013] Through the above technical solution, the annular sealing ribs and the radially distributed O-ring sealing components form a three-dimensional sealing network, effectively blocking the capillary phenomenon formed by fuel vapor climbing up the pipe wall.

[0014] As a further improvement to the above solution, the outer surface of the dynamic sealing ring assembly is threaded with a first fastening bolt via a threaded groove.

[0015] Through the above technical solutions, the self-locking thread design, combined with anti-loosening washers, ensures that fasteners will not loosen under vibration. The bolt head is equipped with a torque limiting groove to guide operators to tighten according to the specified value and avoid overload damage to the thread structure.

[0016] As a further improvement to the above solution, a second fastening bolt is provided on one side of the first fastening bolt, which is threaded to the outer surface of the dynamic sealing ring assembly.

[0017] Through the above technical solution, the double-bolt differential preload technology achieves two-stage sealing pressure: the first bolt completes the coarse adjustment and positioning, and the second bolt performs fine adjustment and pressure replenishment. This graded loading method not only ensures the rapid establishment of the initial seal, but also achieves precise control of the final sealing pressure.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This invention employs a helical transmission structure formed by a first fastening bolt and a precision-machined threaded groove. When the operator rotates the bolt, the axial driving force generated by the threaded groove is evenly applied to all parts of the dynamic sealing ring assembly, causing the dynamic sealing ring assembly to produce synchronous and symmetrical convergence and contraction movements along the geometric center axis. This coordinated deformation mechanism in three-dimensional space, combined with the precise guiding function of the movable hole, can automatically correct the positional deviation of interfaces for different vehicle models, ensuring that the external pipeline and the main oil delivery channel always maintain a high degree of coaxiality. The specially designed embedded O-ring sealing assembly is installed in a precisely calculated elastic deformation groove, which undergoes controllable elastic deformation under radial pressure. This structured design controls pipeline connection errors to a very small range, not only significantly shortening assembly and calibration time but also fundamentally reducing the risk of oil leakage caused by installation stress, thus significantly improving the reliability and safety of the entire vehicle system.

[0020] After the first-stage initial sealing is completed, this invention applies additional directional pressure by rotating the second fastening bolt, causing the elastic sealing material, which has already undergone initial deformation, to undergo secondary controllable deformation. This graded and progressive pressure application strategy has multiple technical advantages. On the one hand, it ensures that the initial sealing specific pressure reaches the optimal working range. On the other hand, subsequent pressure compensation effectively offsets the minor displacements caused by factors such as vibration and temperature changes during equipment operation. In high-frequency vibration environments, the double-layer sealing structure can form a dynamic adaptive damping effect, effectively suppressing the penetration and diffusion of fuel vapor molecules. When the temperature fluctuates drastically, the combination of materials with different expansion coefficients can also maintain stable sealing contact stress, effectively preventing dust, moisture, and other impurities from the external environment from entering the engine, providing an all-weather protective barrier for the precision fuel supply system. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the present utility model;

[0023] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A;

[0024] Figure 4 This is a schematic diagram of the dynamic sealing ring assembly structure of this utility model;

[0025] Figure 5 This utility model Figure 4 Enlarged schematic diagram of the structure at point B.

[0026] Explanation of key symbols:

[0027] 1. Electronic fuel injection carburetor body; 2. Main fuel delivery channel; 3. Multi-vehicle adaptation flange; 4. Dynamic sealing ring assembly; 5. Movable hole; 6. Threaded groove; 7. Elastic deformation groove; 8. Embedded block; 9. O-ring sealing assembly; 10. First fastening bolt; 11. Second fastening bolt. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0029] Example:

[0030] Please combine Figure 1-5 This embodiment of an electronic fuel injection carburetor adaptable to multiple vehicle models includes an electronic fuel injection carburetor body 1, a main fuel delivery channel 2, and a dynamic sealing ring assembly 4. The main fuel delivery channel 2 is fixedly connected to the top of the electronic fuel injection carburetor body 1, and the dynamic sealing ring assembly 4 is fixedly connected to both sides of the main fuel delivery channel 2. The outer surface of the dynamic sealing ring assembly 4 is threaded with a first fastening bolt 10 and a second fastening bolt 11 through a threaded groove 6.

[0031] The outer surface of the main oil transport channel 2 is fixedly connected to a multi-vehicle model adaptable flange 3, and the outer surface of the multi-vehicle model adaptable flange 3 is fixedly connected to a dynamic sealing ring assembly 4.

[0032] The dynamic sealing ring assembly 4 has an internal movable hole 5 and an external threaded groove 6.

[0033] The inner wall of the dynamic sealing ring assembly 4 is provided with an elastic deformation groove 7, and an embedded block 8 is inserted into the inner wall of the elastic deformation groove 7.

[0034] An O-ring sealing assembly 9 is fixedly connected to the outer surface of the embedded block 8. The O-ring sealing assembly 9 is evenly arranged on the inner wall of the dynamic sealing ring group 4.

[0035] The outer surface of the dynamic sealing ring assembly 4 is threaded with a first fastening bolt 10 through a threaded groove 6.

[0036] A second fastening bolt 11 is provided on one side of the first fastening bolt 10, which is threaded to the outer surface of the dynamic sealing ring assembly 4.

[0037] The O-ring sealing assembly 9, which is pre-placed in the elastic deformation groove 7, deforms under pressure and completely wraps around the surface of the external pipe to form a preliminary seal. Then, the second fastening bolt 11 is rotated to mechanically pressurize the O-ring sealing assembly 9 to produce elastic deformation, further enhancing the sealing effect and ultimately achieving a reliable sealing connection with double insurance.

[0038] The implementation principle of an electronic fuel injection carburetor adapted to multiple vehicle models in this application embodiment is as follows: After the external pipe is embedded into the dynamic sealing ring assembly 4, the first fastening bolt 10 is first rotated. With the help of its threaded engagement with the threaded groove 6, the bolt is driven to move smoothly along the axial direction towards the main oil delivery channel 2. During this process, the movable hole 5 plays a guiding role, guiding the dynamic sealing ring assembly 4 to uniformly converge and contract towards the central axis until it tightly fits the outer wall of the external pipe. At this time, the O-ring sealing assembly 9, which is pre-placed in the elastic deformation groove 7, is deformed under pressure and completely wraps the surface of the external pipe to form a preliminary seal. Then, the second fastening bolt 11 is rotated, and the O-ring sealing assembly 9 undergoes elastic deformation through mechanical pressure, further strengthening the sealing effect and finally achieving a reliable sealing connection with double insurance.

[0039] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An electronic fuel injection carburetor adaptable to multiple vehicle models, characterized in that, The device includes an electronically controlled carburetor body (1), a main fuel delivery channel (2), and a dynamic sealing ring assembly (4). The main fuel delivery channel (2) is fixedly connected to the top of the electronically controlled carburetor body (1), and the dynamic sealing ring assembly (4) is fixedly connected to both sides of the main fuel delivery channel (2). The outer surface of the dynamic sealing ring assembly (4) is threaded with a first fastening bolt (10) and a second fastening bolt (11) through a threaded groove (6).

2. The electronic fuel injection carburetor adapted to multiple vehicle models as described in claim 1, characterized in that: The outer surface of the main oil delivery channel (2) is fixedly connected to a multi-vehicle model adaptable flange (3), and the outer surface of the multi-vehicle model adaptable flange (3) is fixedly connected to a dynamic sealing ring assembly (4).

3. The electronic fuel injection carburetor adapted to multiple vehicle models as described in claim 2, characterized in that: The dynamic sealing ring assembly (4) has an internal movable hole (5) and an external threaded groove (6) on its outer surface.

4. The electronic fuel injection carburetor adapted to multiple vehicle models as described in claim 3, characterized in that: The inner wall of the dynamic sealing ring assembly (4) is provided with an elastic deformation groove (7), and an embedded block (8) is inserted into the inner wall of the elastic deformation groove (7).

5. The electronic fuel injection carburetor adapted to multiple vehicle models as described in claim 4, characterized in that: The outer surface of the embedded block (8) is fixedly connected to an O-ring sealing assembly (9), which is uniformly arranged on the inner wall of the dynamic sealing ring assembly (4).

6. The electronic fuel injection carburetor adapted to multiple vehicle models as described in claim 5, characterized in that: The outer surface of the dynamic sealing ring assembly (4) is threaded with a first fastening bolt (10) through a threaded groove (6).

7. The electronic fuel injection carburetor adapted to multiple vehicle models as described in claim 6, characterized in that: A second fastening bolt (11) is provided on one side of the first fastening bolt (10) and is threaded to the outer surface of the dynamic sealing ring assembly (4).

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