Automobile throttle body

Abstract

The application relates to an automobile throttle body, and relates to the technical field of the throttle body, which comprises a throttle body, one side of the throttle body is provided with an oil rail, a connecting cylinder is arranged on the throttle body, a connecting block is fixedly connected to the oil rail, the connecting block corresponds to the connecting cylinder one by one, a connecting column is arranged between the connecting block and the connecting cylinder, one end of the connecting column abuts against the cylinder opening of the connecting cylinder, the other end of the connecting column is fixedly connected with a receiving ring, and a fixing piece for fixing the connecting column between the connecting cylinder and the connecting block is arranged between the connecting block and the connecting column. The application has the effect of reducing the manufacturing cost of the throttle body.

Description

Technical Field

[0001] This application relates to the technical field of throttle valves, and more particularly to an automotive throttle valve body. Background Technology

[0002] In the fuel supply system of an automobile engine, the throttle body is the core component that controls the intake air volume, while the fuel rail, as a key structure for fuel distribution, needs to work precisely with the throttle body to achieve stable fuel delivery and atomization. The connection stability and manufacturing process of the two directly affect the engine's power performance, fuel economy, and operational reliability. Currently, the mainstream throttle body and fuel rail connection solutions in the industry mostly adopt an integrated casting process. This means that the throttle body (including the intake passage, throttle seat, and other core structures) and the fuel rail (including the fuel distribution chamber and injector mounting interface) are integrally formed through a single mold casting. This process was initially widely used mainly based on design considerations that simplified assembly procedures and reduced connection sealing points to lower the risk of fuel leakage. The integrated structure can avoid fuel seepage problems caused by aging seals and assembly errors in separate connections, and theoretically improves the overall sealing performance and structural strength of the system.

[0003] Due to the significant differences in structure and function between the throttle body and the fuel rail, the throttle body needs to form a complex intake channel (often containing bends and stepped surfaces), while the fuel rail needs to be designed with a thin-walled fuel chamber (the wall thickness is usually only 2-3mm) and multiple high-precision fuel injector interfaces. When the two are molded as a single piece, the mold cavity needs to be compatible with two completely different structural features at the same time, resulting in complex flow channels and too many corners inside the cavity.

[0004] During the grouting process, the flow resistance of molten metal (such as aluminum alloy) in the cavity increases significantly, easily forming "dead flow corners" at the bends of the throttle intake channel and at the junction of the thin-walled cavity and the interface of the oil rail. This results in insufficient filling of local molten metal, leading to casting defects such as shrinkage cavities and porosity, with a scrap rate as high as 15%-20%. At the same time, in order to ensure the complete filling of complex cavities, it is necessary to increase the grouting pressure and holding time, which not only reduces the production cycle (the production cycle of a single mold is more than 30% longer than that of split casting), but also increases the scouring loss of molten metal on the mold cavity, thus keeping costs high.

[0005] Therefore, there is an urgent need to propose a new throttle body structure to reduce the manufacturing cost of the throttle body. Utility Model Content

[0006] In order to reduce the manufacturing cost of throttle body, this application provides an automotive throttle body.

[0007] The technical solution for an automotive throttle body provided in this application is as follows: A throttle body for automobiles includes a throttle body, an oil rail on one side of the throttle body, a connecting cylinder on the throttle body, a connecting block fixedly connected to the oil rail, the connecting block and the connecting cylinder corresponding one-to-one, a connecting post between the connecting block and the connecting cylinder, one end of the connecting post abutting against the opening of the connecting cylinder, the other end of the connecting post being fixedly connected to a receiving ring, and a fixing member for fixing the connecting post between the connecting cylinder and the connecting block being provided between the connecting block and the connecting post.

[0008] By adopting the above technical solution, an oil rail is set on one side of the throttle body, and the connecting block on the oil rail is connected to the connecting cylinder on the throttle body through connecting columns and fasteners, thus achieving a stable connection between the oil rail and the throttle body. This facilitates the installation and fixing of the oil rail. At the same time, separating the oil rail, the throttle body, and related connecting parts can greatly reduce processing costs and reduce the manufacturing difficulty of the throttle body.

[0009] Optionally, the fixing component is configured as a positioning bolt, which is coaxially arranged with the connecting column. The shank of the positioning bolt passes through and is threaded into the connecting column, and the shank of the positioning bolt is threaded into the connecting cylinder. The nut of the positioning bolt presses the connecting block against the receiving ring.

[0010] By adopting the above technical solution, the connecting column can be firmly fixed between the connecting cylinder and the connecting block, thus achieving a stable connection between the oil rail and the throttle body.

[0011] Optionally, the connecting cylinder is integrally cast with the throttle body.

[0012] By adopting the above technical solution, the connection between the connecting cylinder and the throttle body is made more stable, avoiding loosening or separation between the connecting cylinder and the throttle body. At the same time, the one-piece casting here can reduce processing steps, reduce production costs, and improve production efficiency.

[0013] Optionally, the connecting cylinders are configured as two and located on both sides of the throttle body respectively.

[0014] By adopting the above technical solution, the connection between the fuel rail and the throttle body can be made more stable, ensuring the stability of the connection structure between the fuel rail and the throttle body.

[0015] Optionally, the positioning bolt passes through and is slidably connected to the connecting block.

[0016] By adopting the above technical solution, the positioning bolts are inserted and slidably connected to the connecting block, which facilitates the installation of the positioning bolts and makes it easier to fix the connecting column between the connecting cylinder and the connecting block, thus ensuring the stability of the connection between the oil rail and the throttle body.

[0017] Optionally, the outer wall of the oil rail is provided with a reinforcing block surrounding the outer wall of the oil rail, and the reinforcing block is integrally cast with the oil rail.

[0018] By adopting the above technical solution, reinforcing blocks are set around the outer wall of the oil rail and cast integrally with the oil rail, which can enhance the structural strength of the oil rail and improve its stability and durability.

[0019] Optionally, a countersunk bolt is threaded onto the connecting block, the countersunk bolt is threaded onto the reinforcing block, and the connecting block is fixed to the oil rail by the countersunk bolt.

[0020] By adopting the above technical solution, the countersunk bolt connection makes the fixing of the connecting block more reliable.

[0021] Optionally, the cross-sectional area of ​​the connecting block near the oil rail end is greater than the cross-sectional area of ​​the connecting block near the connecting column end.

[0022] By adopting the above technical solution, the cross-sectional area of ​​the connecting block near the oil rail is larger than that near the connecting post, which can enhance the connection stability between the connecting block and the oil rail, and is conducive to the transmission and distribution of force, making the connection between the oil rail and the throttle body more firm and reliable.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. The oil rail is connected to the throttle body through connecting columns, receiving rings and fasteners, avoiding loosening due to vibration and use of traditional bolt connections, thus improving connection stability and fitting accuracy; 2. The connecting sleeve and the throttle body are cast as a single piece to ensure connection strength and stability; 3. The outer wall of the oil rail is equipped with reinforcing blocks, which can enhance the structural strength of the oil rail and improve the overall reliability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a structural schematic diagram of a countersunk bolt according to an embodiment of this application.

[0025] In the diagram, 1. Throttle body; 2. Fuel rail; 3. Connecting cylinder; 4. Connecting block; 5. Connecting column; 6. Receiving ring; 7. Fixing component; 8. Reinforcing block; 9. Countersunk bolt. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1 -Appendix Figure 2 This application will be described in further detail.

[0027] This application provides an embodiment of an automotive throttle body, referring to... Figure 1 and Figure 2 It includes a throttle body 1, an oil rail 2, a connecting cylinder 3, a connecting block 4, a connecting post 5, and a fixing component 7. The throttle body 1 is the main part of the automobile throttle body and is made of metal materials, such as aluminum alloy. An oil rail 2 is provided on one side of the throttle body 1, and the oil rail 2 is tubular.

[0028] The throttle body is equipped with connecting cylinders 3. In this embodiment, there are two connecting cylinders 3, located on both sides of the throttle body. The connecting cylinder 3 is cylindrical, and its inner diameter is adapted to the outer diameter of the connecting post 5 to ensure that the connecting post 5 can be smoothly inserted. The connecting cylinder 3 is fixed to the throttle body 1 by integral casting.

[0029] A connecting block 4 is fixedly connected to the oil rail 2. The connecting block 4 corresponds to the connecting cylinder 3 one by one. A connecting post 5 is provided between the connecting block 4 and the connecting cylinder 3. One end of the connecting post 5 abuts against the opening of the connecting cylinder 3. The other end of the connecting post 5 is fixedly connected to the receiving ring 6. The receiving ring 6 is arranged around the outer wall of the connecting post 5.

[0030] Fuel rail 2 is a component used to transport fuel. It is typically made of metal tubing, such as stainless steel or aluminum alloy, with stainless steel offering excellent corrosion resistance. A reinforcing block 8 is integrally cast with the fuel rail 2, surrounding its outer wall. The reinforcing block 8 enhances the strength of the fuel rail 2 and prevents deformation during use. In practice, the reinforcing block 8 can be ring-shaped, strip-shaped, etc., depending on the design of the fuel rail 2 and specific requirements.

[0031] The connecting block 4 is fixedly connected to the oil rail 2. In this embodiment, a countersunk bolt 9 is threaded onto the connecting block 4, and the countersunk bolt 9 is threaded onto the reinforcing block 8. The connecting block 4 is fixed to the oil rail 2 by the countersunk bolt 9. Furthermore, the cross-sectional area of ​​the connecting block 4 near the oil rail 2 is larger than the cross-sectional area of ​​the connecting block 4 near the connecting column 5, thereby making the connection between the connecting block 4 and the oil rail 2 more secure, and also allowing for better cooperation with the connecting column 5.

[0032] The connecting post 5 is cylindrical in shape. One end of the connecting post 5 abuts against the opening of the connecting cylinder 3, and the other end is fixedly connected to the receiving ring 6. Its outer diameter is adapted to the inner diameter of the connecting cylinder 3.

[0033] In this embodiment, the fixing element 7 is a positioning bolt, which is coaxially arranged with the connecting column 5. The shank of the positioning bolt passes through and is threaded into the connecting column 5, and the shank of the positioning bolt is threaded into the connecting sleeve 3. The nut of the positioning bolt presses the connecting block 4 against the receiving ring 6. The positioning bolt passes through and slides on the connecting block 4, which makes the installation and removal of the positioning bolt more convenient. The positioning bolt can be a common hexagonal bolt, or other types of bolts such as socket head cap screws.

[0034] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A throttle body for automobiles, comprising a throttle body (1), characterized in that, The throttle body (1) has an oil rail (2) on one side, a connecting cylinder (3) on the throttle body (1), a connecting block (4) fixedly connected to the oil rail (2), the connecting block (4) and the connecting cylinder (3) are corresponding one-to-one, a connecting post (5) is provided between the connecting block (4) and the connecting cylinder (3), one end of the connecting post (5) abuts against the opening of the connecting cylinder (3), the other end of the connecting post (5) is fixedly connected to the receiving ring (6), and a fixing member (7) is provided between the connecting block (4) and the connecting post (5) for fixing the connecting post (5) between the connecting cylinder (3) and the connecting block (4).

2. The automobile throttle body according to claim 1, characterized in that, The fixing member (7) is set as a positioning bolt. The positioning bolt is coaxially arranged with the connecting column (5). The shank of the positioning bolt passes through and is threaded into the connecting column (5). The shank of the positioning bolt is threaded into the connecting cylinder (3). The nut of the positioning bolt presses the connecting block (4) against the receiving ring (6).

3. The automobile throttle body according to claim 1, characterized in that, The connecting cylinder (3) is integrally cast with the throttle body (1).

4. The automobile throttle body according to claim 1, characterized in that, The connecting cylinder (3) is configured as two and is located on both sides of the throttle body (1).

5. A throttle body for automobiles according to claim 2, characterized in that, The positioning bolt is inserted through and slidably connected to the connecting block (4).

6. The automobile throttle body according to claim 1, characterized in that, The outer wall of the oil rail (2) is provided with a reinforcing block (8) surrounding the outer wall of the oil rail (2), and the reinforcing block (8) is integrally cast with the oil rail (2).

7. A throttle body for automobiles according to claim 6, characterized in that, The connecting block (4) is threaded with a countersunk bolt (9), which is threaded onto the reinforcing block (8). The connecting block (4) is fixed to the oil rail (2) by the countersunk bolt (9).

8. A throttle body for automobiles according to claim 7, characterized in that, The cross-sectional area of ​​the connecting block (4) near the oil rail (2) is greater than the cross-sectional area of ​​the connecting block (4) near the connecting column (5).

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