Electronic injection valve body assembly

Abstract

The utility model provides an electronic injection valve body assembly which comprises a throttle valve position sensor assembly, and the throttle valve position sensor assembly comprises a throttle valve position sensor and an inserting piece connected with the throttle valve position sensor. The throttle valve position sensor is installed on one side face of the valve body, and a flange face is arranged on the side, connected with the valve body, of the throttle valve position sensor. The plug-in is installed on the valve body through an installation flange on the flange face, and the plug-in and the flange face are kept in a perpendicular state, so that the plug-in does not conflict with other structures of the valve body assembly, and flexible assembly and disassembly are facilitated. The structure is simple, the design is flexible, different requirements can be met, and the convenience of installation and maintenance is ensured while the waterproof effect is achieved.

Description

Technical Field

[0001] The invention relates to an electronic fuel injection valve body assembly, in particular to an electronic fuel injection valve body assembly with a sensor plug-in unit. Background Art

[0002] The EFI valve body position sensor (TPS) is crucial for monitoring the actual throttle position and transmitting this information to the ECU, helping it accurately control engine operation. This is crucial for maintaining engine performance, optimizing fuel efficiency, and reducing emissions. The TPS sensor also plays a crucial role in engine diagnostics. The ECU continuously monitors the TPS signal and compares it with other engine sensor readings to detect potential faults.

[0003] However, in related technologies, position sensors are usually equipped with a plug-in structure. After the position sensor and the plug-in structure are installed, they are easily affected by water erosion during long-term operation, which affects their sensitivity and service life and requires frequent replacement. However, the plug-in is usually also associated with other structures of the valve body assembly, making it inconvenient to disassemble. Summary of the Invention

[0004] Therefore, the main purpose of the present invention is to solve the traditional shortcomings and provide an electronic fuel injection valve body assembly.

[0005] To achieve the above-mentioned purpose, the present invention provides an electronic fuel injection valve assembly, comprising a valve body, the valve body being provided with at least one air inlet passage for supplying air to the engine; and further comprising:

[0006] a throttle position sensor assembly, the throttle position sensor assembly comprising a throttle position sensor and a plug-in connected to the throttle position sensor;

[0007] Wherein, the throttle position sensor is installed on a side surface of the valve body, and a flange surface is provided on the side where the throttle position sensor is connected to the valve body;

[0008] The plug-in unit is mounted on the valve body through a mounting flange on the flange surface, and the plug-in unit and the flange surface are kept in a vertical state.

[0009] In an embodiment of the present invention, the insert is located below the throttle position sensor.

[0010] In one embodiment of the present invention, the plug-in comprises a connecting portion and a plug-in interface.

[0011] The connecting portion is connected to the mounting flange, the plug port is connected to the connecting portion along a first direction, and an opening of the plug port faces horizontally outward, and the first direction is perpendicular to the flange surface.

[0012] In an embodiment of the present invention, the flange surface is parallel to the air inlet passage, and the plug-in is perpendicular to the air inlet passage.

[0013] In one embodiment of the present invention, a throttle shaft assembly is further included, and the throttle position sensor is connected to the throttle shaft assembly through mechanical connection or contactless connection.

[0014] In one embodiment of the present invention, the throttle shaft assembly is disposed in the intake passage and includes a throttle plate and a throttle shaft;

[0015] The throttle shaft is mounted on the valve body through a throttle shaft mounting hole, and the throttle plate is mounted on the throttle shaft. The opening and closing degree of the throttle plate and the intake passage are controlled by rotating the throttle shaft.

[0016] In one embodiment of the present invention, the throttle position sensor adopts a brush sensor structure or a Hall sensor structure.

[0017] In one embodiment of the present invention, the throttle position sensor is mounted on the side surface of the valve body by bolts.

[0018] In one embodiment of the present invention, the intake passage includes a main air passage and an idle bypass air passage, the main air passage is used to connect the air filter and the main flow passage of the engine, and the idle bypass air passage is used to connect the air filter and the bypass flow passage of the engine.

[0019] Compared with the related art, the advantages of this application are:

[0020] This new electronic fuel injection valve assembly features a throttle position sensor mounted on a side of the valve body. A flange is provided on the side where the throttle position sensor connects to the valve body. A plug-in is mounted on the valve body via a mounting flange on the flange, with the plug-in perpendicular to the flange so that it faces outward and does not conflict with other components of the valve body assembly. This simple and flexible structure allows for flexible assembly and disassembly, adapting to diverse needs. While providing a waterproofing effect, it also ensures ease of installation and subsequent maintenance, thereby increasing the sensitivity and service life of the position sensor over long-term use and enhancing the performance of the electronic fuel injection valve assembly.

[0021] In order to further understand the technology, method and effect of the present invention and achieve the intended purpose of the present invention, please refer to the following detailed description and drawings; in addition, the purpose, characteristics and features of the present invention can be understood more deeply and specifically; however, the drawings are provided for reference and description only and are not intended to limit the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of an electronic fuel injection valve assembly disclosed in the present invention;

[0023] Figure 2 is another three-dimensional structural schematic diagram of the electronic fuel injection valve body assembly;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of another embodiment of the electronic fuel injection valve body assembly disclosed in the present invention;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of another embodiment of the electronic fuel injection valve body assembly disclosed in this invention;

[0026] Wherein, the accompanying drawings are marked as follows:

[0027] 1: Valve body;

[0028] 11: air intake channel;

[0029] 2: Throttle position sensor assembly;

[0030] 21: throttle position sensor;

[0031] 211: bolt;

[0032] 22: plug-in;

[0033] 21A: flange surface;

[0034] 221: connecting portion;

[0035] 222: plug interface;

[0036] 3: throttle shaft assembly;

[0037] 31: throttle plate;

[0038] 32: Throttle shaft. DETAILED DESCRIPTION

[0039] The detailed description and technical contents of the present invention are described below with reference to the accompanying drawings. However, the accompanying drawings are only provided for reference and illustration and are not intended to limit the present invention.

[0040] The electronic fuel injection (EFI) valve assembly is a crucial component of the electronic fuel injection (EFI or EGI) system, precisely controlling the amount and timing of fuel injection to achieve efficient, environmentally friendly engine operation. The EFI valve assembly incorporates precision components such as electronic components and sensors, and therefore requires regular maintenance and servicing to maintain its optimal working condition and extend its service life. This new design addresses this issue by improving the installation of the position sensor assembly within the EFI valve assembly, ensuring ease of installation while maintaining the position sensor's sensitivity and service life.

[0041] Specifically, see Figures 1 and 2 , Figure 1 、 Figure 2 It is a structural schematic diagram of the first embodiment of the electronic fuel injection valve body assembly of the present invention.

[0042] The electronic fuel injection valve body assembly includes a valve body 1 and a throttle position sensor assembly 2. The valve body 1 is a conventional technology, and only the valve body and the present novel technology are briefly described here. The throttle position sensor assembly 2 includes a throttle position sensor 21 and a plug-in 22 connected to the throttle position sensor. The throttle position sensor 21 is installed on a side of the valve body 1, and a flange surface 21A is provided on the side where the throttle position sensor 21 is connected to the valve body 1. The plug-in 22 is installed on the valve body 1 through a mounting flange (not shown in the figure) on the flange surface 21A, and the plug-in 22 and the flange surface 21A are kept in a vertical state so that the plug-in direction is outward, does not conflict with other structures of the valve body assembly, can be flexibly assembled and disassembled, and is convenient for installation and subsequent maintenance. The plug-in structure optimizes the convenience of installation and maintenance through its vertical outward layout.

[0043] Further references Figure 1 、 Figure 2 As shown, in the first embodiment of the present invention, the plug-in 22 is installed at the bottom of the throttle position sensor 21, which can achieve a waterproof effect.

[0044] Further references Figure 1 、 Figure 2As shown, the plug-in 22 includes a connecting portion 221 and an inserting port 222. In this embodiment, the connecting portion 221 is connected to the mounting flange, and the inserting port 222 is connected to the connecting portion 221 along a first direction, with the opening of the inserting port 222 facing horizontally outward, and the first direction is perpendicular to the flange surface 21A. In addition, in this embodiment, the inserting port 222 and the connecting portion 221 can be a fixed, integrated structure, that is, in this case, the inserting port 222 can only remain connected to the connecting portion 221 along the first direction, so that the opening of the inserting port 22 faces horizontally outward and perpendicular to the flange surface 21A. In addition, in order to increase the flexibility of use of the plug-in 22 and make it suitable for different needs, in this embodiment, the plug port 222 and the connecting portion 221 can also be movably connected through a connecting shaft. At this time, the plug port 222 is not limited to being connected to the connecting portion 221 only along the first direction. It can be rotated through the connecting shaft to be in the same plane as the connecting portion 221 according to different actual needs such as waterproofing. The opening direction of the plug port 222 is rotated from the horizontal outward opening to the vertical downward opening to enhance the waterproof effect.

[0045] In addition, in one embodiment, the throttle position sensor 21 is mounted on the side surface of the valve body 1 by means of bolts 211 , but the present invention is not limited thereto.

[0046] In addition, further reference Figure 1 、 Figure 2 As shown in the figure, the valve body 1 is also provided with at least one intake channel 11 for supplying air to the engine. Furthermore, the intake channel includes a main air channel and an idle bypass channel (not specifically shown). The main air channel connects the air filter to the main flow channel of the engine, while the idle bypass channel connects the air filter to the bypass flow channel of the engine. In one embodiment, the flange surface 21A is parallel to the intake channel 11, so that the insert 22 is also perpendicular to the intake channel 11.

[0047] In addition, further reference Figure 1 As shown, the EFI valve body assembly further includes a throttle shaft assembly 3, which is disposed within the intake passage 11 and includes a throttle plate 31 and a throttle shaft 32. The throttle shaft 32 is mounted to the valve body 1 through a throttle shaft mounting hole. The throttle plate 31 is mounted on the throttle shaft 32, and the opening and closing degree of the throttle plate 31 and the intake passage 11 are controlled by rotating the throttle shaft 32. In this embodiment, the throttle position sensor 21 and the throttle shaft assembly 3 can be mechanically or contactlessly connected, enabling accurate detection of the throttle opening, thereby providing information on the current engine status, enabling the ECU to accurately control the fuel injection amount and ignition timing.

[0048] In addition, in some embodiments, the throttle position sensor may adopt a brush sensor structure or a Hall sensor structure, which is not specifically limited in this application.

[0049] Furthermore, in some embodiments, the throttle position sensor may be combined with an intake temperature sensor or an intake pressure sensor to form a two-in-one or three-in-one sensor, depending on actual needs, to improve system integration.

[0050] In summary, the electronic fuel injection valve assembly disclosed in this embodiment mounts the throttle position sensor on a side of the valve body, with a flange provided on the side where the throttle position sensor connects to the valve body. An insert is mounted on the valve body via a mounting flange on the flange, with the insert and flange maintained perpendicularly so that the insert faces outward and does not conflict with other structures of the valve body assembly. This simple and flexible structure allows for flexible assembly and disassembly, adapting to diverse needs. While providing a waterproof effect, it also ensures ease of installation and subsequent maintenance, thereby increasing the sensitivity and service life of the position sensor over long-term use and enhancing the performance of the electronic fuel injection valve assembly.

[0051] Also, see Figure 3 As shown, Figure 2 A schematic diagram of the structure of an EFI valve body assembly according to a second embodiment of the present invention is disclosed. Unlike the first embodiment, the second embodiment of the present invention is characterized in that an insert 22 is mounted on the valve body 1 via a mounting flange (not shown) on the flange surface 21A. The insert 22 is kept horizontal with the flange surface, and the insert opening is vertically downward, providing a waterproof effect. However, the insert is not mounted for easy removal and installation.

[0052] In this regard, in one embodiment, in order to increase the flexibility of use of the plug-in 21, the plug-in 22 is also provided with a connecting portion 221 and a plug interface 222. The plug interface 222 and the connecting portion 221 can be movably connected via a connecting shaft. At this time, the plug interface 222 is not limited to being maintained on the same plane as the connecting portion 211. According to different actual needs, the plug interface 222 can be rotated to a direction perpendicular to the flange surface via the connecting shaft, so that the opening direction of the plug interface 222 is rotated from vertically downward to horizontally outward, so that it can achieve a waterproof effect while being easy to disassemble and install, ensuring the convenience of later maintenance.

[0053] See also Figure 4 As shown, Figure 4A schematic structural diagram of an EFI valve assembly according to a third embodiment of the present invention is disclosed. Unlike the first embodiment, in this third embodiment, the insert 22 is mounted to the side of the flange surface of the throttle position sensor 21. The insert 22 is perpendicular to the flange surface 21A and the intake passage 11, facing outward. This allows for flexible assembly and disassembly, facilitating installation and subsequent maintenance.

[0054] However, in this embodiment, the plug-in is installed at a side position, which is not conducive to waterproofing. In this regard, in one embodiment, the connection portion 221 of the plug-in 22 can be movably connected to the plug interface 222 through a connecting shaft. At this time, the plug interface 222 is not limited to being maintained on the same horizontal plane as the connection portion 221. The plug interface 222 can be rotated to be perpendicular to the connection portion 221 through the connecting shaft according to actual different needs, that is, the opening direction of the plug interface 222 can be rotated from horizontal outward to vertical downward, so as to ensure the convenience of installation and subsequent maintenance of the position sensor while achieving a waterproof effect.

[0055] The above description is merely a detailed description and drawings of preferred specific embodiments of the present invention. However, the features of the present invention are not limited thereto and are not intended to limit the present invention. The full scope of the present invention shall be subject to the scope of the patent application. All embodiments that conform to the spirit of the patent application of the present invention and similar variations thereof shall be included in the scope of the present invention. Any changes or improvements that can be easily conceived by any person of ordinary skill in the art who is familiar with the technology within the scope of the present invention shall be covered by the patent scope of the following case.

Claims

1. An electronic fuel injection valve assembly, comprising a valve body, the valve body being provided with at least one air inlet passage for supplying air to the engine; characterized in that: Also includes: a throttle position sensor assembly, the throttle position sensor assembly comprising a throttle position sensor and a plug-in connected to the throttle position sensor; Wherein, the throttle position sensor is installed on a side surface of the valve body, and a flange surface is provided on the side where the throttle position sensor is connected to the valve body; The plug-in unit is mounted on the valve body through a mounting flange on the flange surface, and the plug-in unit and the flange surface are kept in a vertical state.

2. The electronic fuel injection valve assembly according to claim 1, characterized in that: The insert is located below the throttle position sensor.

3. The electronic fuel injection valve assembly according to claim 2, characterized in that: The plug-in includes a connecting portion and a plug-in interface; wherein the connecting portion is connected to the mounting flange; The plug-in port is connected to the connecting portion along a first direction, and an opening of the plug-in port faces horizontally outward, and the first direction is perpendicular to the flange surface.

4. The electronic fuel injection valve assembly according to claim 1, characterized in that: The flange surface is parallel to the air inlet passage, and the plug-in unit is perpendicular to the air inlet passage.

5. The electronic fuel injection valve assembly according to claim 1, characterized in that: The invention also comprises a throttle shaft assembly, and the throttle position sensor is connected to the throttle shaft assembly through mechanical connection or contactless connection.

6. The electronic fuel injection valve assembly according to claim 5, characterized in that: The throttle shaft assembly is arranged in the intake passage, and includes a throttle plate and a throttle shaft; The throttle shaft is mounted on the valve body through a throttle shaft mounting hole, and the throttle plate is mounted on the throttle shaft. The opening and closing degree of the throttle plate and the intake passage are controlled by rotating the throttle shaft.

7. The electronic fuel injection valve assembly according to claim 1, characterized in that: The throttle position sensor adopts a brush sensor structure or a Hall sensor structure.

8. The electronic fuel injection valve assembly according to claim 1, characterized in that: The throttle position sensor is mounted on the side surface of the valve body by bolts.

9. The electronic fuel injection valve assembly according to claim 1, characterized in that: The air intake passage comprises a main air passage and an idle bypass air passage, wherein the main air passage is used to connect the air filter and the main flow passage of the engine, and the idle bypass air passage is used to connect the air filter and the bypass flow passage of the engine.

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