Intake manifold structure

Abstract

The utility model discloses an intake manifold structure which comprises a body composed of an upper split manifold and a lower split manifold, a pressure stabilizing cavity is formed in the body, and the upper split manifold and the lower split manifold are detachably connected with each other. The lower edge of the upper split manifold and the upper edge of the lower split manifold are sequentially provided with a plurality of fixing blocks with mounting round holes at intervals in the circumferential direction respectively, the fixing blocks on the lower edge of the upper split manifold correspond to the fixing blocks on the upper edge of the lower split manifold, and during mounting, the upper split manifold and the lower split manifold are mounted through bolts and nuts. The two oil rails are detachably connected with the left side and the right side of the lower split manifold and the left side and the right side of the upper split manifold respectively. Compared with an oil rail installation structure in the prior art, the oil rail installation structure has the advantages that the oil rail and the body are directly and detachably installed, and the stress strength is higher and more stable.

Description

Technical Field

[0001] This utility model relates to the field of automotive engine parts technology, and in particular to an intake manifold structure. Background Technology

[0002] The intake manifold refers to the intake piping from the carburetor or throttle body to the intake manifold in the cylinder head. Its function is to distribute the air-fuel mixture from the carburetor or throttle body to the intake manifolds of each cylinder. It's called a "manifold" because after the air enters the throttle body and passes through the manifold buffer system, the airflow branches off. Corresponding to the number of engine cylinders, a four-cylinder engine has four branches, and a five-cylinder engine has five, distributing the air-fuel mixture or clean air as evenly as possible to each cylinder. A water cooler is a type of radiator that operates silently during heat absorption and dissipation, producing virtually no noise. It dissipates heat very quickly and can even dissipate heat while running. It has a strong ability to adapt to ambient temperatures, whether cold or hot.

[0003] When installing existing intake manifolds, workers typically use tools to manually install multiple bolts one by one into the corresponding bolt holes before connecting and assembling them with the corresponding equipment. However, to facilitate installation and future cleaning and maintenance, and to leave room for further modifications, some intake manifolds are designed with two sections, one above the other. Before installation onto the corresponding equipment, the upper and lower sections of the intake manifold need to be assembled. During assembly, multiple bolts are also manually installed by workers into the corresponding bolt holes on the upper and lower sections of the intake manifold to complete the overall assembly.

[0004] For example, Chinese utility model patent number 201621204264X discloses an electronically controlled fuel injection intake system. Its fuel rail structure is installed and connected to the mounting position at the lower end of the air distribution channel by a fixing component. However, its structure has the disadvantage of having a small stress point and requiring multiple installation points, resulting in high cost and inconvenient installation.

[0005] Therefore, improvements to the existing intake manifold structure are necessary. Utility Model Content

[0006] This utility model aims to solve one of the technical problems existing in the prior art.

[0007] This application provides an intake manifold structure, including a body composed of an upper split manifold and a lower split manifold. A pressure-stabilizing chamber is formed inside the body. The upper and lower split manifolds are detachably connected to each other. The lower split manifold has several air distribution ports arranged along its front-to-back direction on both its left and right sides. Air distribution pipes are connected to the external sides of these air distribution ports. A single cylinder head flange is connected to the end of the air distribution pipe on the same side away from the lower split manifold. The cylinder head flange has air outlets that correspond one-to-one with the air distribution pipes. The structure is characterized by several fixing blocks with mounting holes arranged circumferentially at intervals along the lower edge of the upper split manifold and the upper edge of the lower split manifold. The fixing blocks on the lower edge of the upper split manifold and the upper edge of the lower split manifold correspond to each other. During installation, the upper and lower split manifolds are installed using bolts and nuts. The structure also includes two fuel rails that are detachably connected to the left and right sides of the lower and upper split manifolds, respectively.

[0008] Preferably, the oil rail is detachably connected to the lower split manifold via at least two Y-shaped connectors.

[0009] Preferably, the Y-shaped connector has upper connector holes at both its upper and lower ends, corresponding to two mounting holes, and a lower connector hole at its lower end. The oil rail has a fixing hole that mates with the Y-shaped connector. During installation, the upper split manifold, lower split manifold, and Y-shaped connector are installed by using bolts and nuts in conjunction with the upper connector holes and mounting holes; the Y-shaped connector and oil rail are installed by using bolts and nuts in conjunction with the lower connector holes and fixing holes.

[0010] Preferably, the middle part of the Y-shaped connector is bent, that is, the two upper connector holes face vertically, while the lower connector hole faces horizontally, and the front-to-back width of the lower end of the Y-shaped connector is more than twice the front-to-back width of the upper end.

[0011] Preferably, the lower end of the Y-shaped connector is provided with two lower connector holes, which are spaced apart and are located at the same horizontal height.

[0012] Compared to the fuel rail installation structure in the prior art, the fuel rail in this invention is directly and detachably installed to the main body, resulting in higher strength and stability. The Y-shaped connector is simultaneously fixed to the fixing blocks of the upper and lower split manifolds, dispersing the stress points and effectively resisting the stress caused by engine vibration, further improving the connection stability of the fuel rail and matching the R&D goal of "more stable structure". Moreover, the Y-shaped connector can be installed at the same time as the upper and lower split manifolds, completing the installation and fixing of the fuel rail simultaneously. Compared to the prior art where it is installed on the cylinder head flange, the structure in this embodiment is more convenient to install. Furthermore, the lower end of the Y-shaped connector has two lower connecting holes, which are spaced apart and set at the same horizontal level, as shown in Figures 1 and 2. One fixing hole on the fuel rail corresponds to the two lower connecting holes at the lower end of the Y-shaped connector. This structure facilitates the adjustment of the fuel rail installation position, allowing for adjustment by changing the position to a certain extent.

[0013] The beneficial effects of this invention will be explained in detail in the embodiments, thereby making the beneficial effects more obvious. Attached Figure Description

[0014] Figure 1 This is a rear top-view perspective schematic diagram of the specific structure of an embodiment of this application.

[0015] Figure 2 This is a side-view perspective view of a specific structure according to an embodiment of this application.

[0016] Figure 3 This is a side-view perspective of a specific structure in an embodiment of this application.

[0017] Figure 4 This is a three-dimensional schematic diagram of the Y-shaped connector structure in the embodiments of this application.

[0018] Figure 5 This is a three-dimensional schematic diagram of the oil rail structure in the embodiment of this application.

[0019] Figure 6 This is a three-dimensional schematic diagram of the Y-shaped connector and oil rail structure in the embodiments of this application. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0021] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0022] The embodiments of this application will be described in detail below with reference to the accompanying drawings and specific examples and application scenarios.

[0023] Example 1:

[0024] like Figures 1-6 As shown, an intake manifold structure includes a body 1 composed of an upper split manifold 101 and a lower split manifold 102. A pressure-stabilizing chamber 2 is formed inside the body 1. The upper split manifold 101 and the lower split manifold 102 are detachably connected to each other. Several air distribution ports are arranged on the left and right sides of the lower split manifold 102 along the front-rear direction. Air distribution pipes 6 are connected to the outside of these air distribution ports. One end of the air distribution pipe 6 on the same side, away from the lower split manifold 102, is connected to a single-piece cylinder head flange 7. The cylinder head flange 7 has openings that correspond one-to-one with the air distribution pipes 6. In a specific embodiment of this utility model, the lower edge of the upper split manifold 101 and the upper edge of the lower split manifold 102 are respectively provided with a plurality of fixing blocks 100 with mounting holes 5 at intervals along the circumference. The fixing blocks 100 on the lower edge of the upper split manifold 101 and the upper edge of the lower split manifold 102 correspond to each other. During installation, the upper split manifold 101 and the lower split manifold 102 are installed by bolts and nuts. It also includes two oil rails 8 that are detachably connected to the left and right sides of the lower split manifold 102 and the upper split manifold 101, respectively.

[0025] The main body is composed of an upper split manifold 101 and a lower split manifold 102 that can be detachably spliced ​​together. Inside, a pressure stabilizing chamber 2 is formed to stabilize the intake pressure. Along the circumference of the pressure stabilizing chamber 2, the lower edge of the upper split manifold 101 and the upper edge of the lower split manifold 102 are arranged a number of fixing blocks 100 with mounting holes 5 at intervals. The positions of the fixing blocks 100 of the upper and lower split manifolds correspond one to one. During assembly, the two are tightly connected by bolts and nuts.

[0026] The lower split manifold 102 has several air distribution ports on both sides along the front-rear direction. Each air distribution port is connected to an air distribution pipe 6. The structure and size of the air distribution pipe 6 are adapted to the intake requirements of each cylinder of the engine, ensuring that the intake air can be evenly distributed to each cylinder. The ends of all the air distribution pipes 6 on the same side away from the lower split manifold 102 are connected to a single cylinder head flange 7. The flange has air outlets 19 that correspond one-to-one with the air distribution pipes 6. The overall structure of the flange is adapted to the intake interface of the engine cylinder head, which can achieve a stable connection with the cylinder head.

[0027] Oil rail 8: Two rails are provided, corresponding to the left and right sides of the lower split manifold 102 and the upper split manifold 101 respectively, and are connected to the main body in a detachable manner; the oil rail 8 is provided with fixing holes 12 that cooperate with the Y-type connector 9, and the position and number of fixing holes 12 are adapted to the installation requirements of the Y-type connector 9.

[0028] Y-type connector 9: Each side of the oil rail 8 is connected to the lower split manifold 102 via at least two Y-type connectors 9.

[0029] An upper connector hole 10 is provided at the upper end, corresponding to the mounting hole 5 of the fixing block 100, for cooperating with the fixing block 100 of the upper and lower split manifolds;

[0030] The middle part is bent, so that the upper connector hole 10 is vertical and the lower connector hole 11 is horizontal, which is suitable for the vertical connection of the upper and lower split manifolds and the horizontal installation of the oil rail.

[0031] The front-to-back width of the lower end is more than twice that of the front-to-back width of the upper end, and two lower connecting holes 11 with front-to-back spacing and the same horizontal height are opened at the lower end. These holes cooperate with the fixing holes 12 of the oil rail 8 to realize the front-to-back adjustment of the oil rail installation position.

[0032] A throttle flange and a throttle intake can be installed in front of either the upper split manifold 101 or the lower split manifold 102. The structure of the throttle flange is adapted to the installation dimensions of a conventional throttle. The throttle intake and the pressure regulating chamber transition smoothly, reducing airflow resistance during the intake process.

[0033] Example 2:

[0034] The difference from Embodiment 1 is that, in this specific embodiment of the present invention, the following specific installation steps are adopted:

[0035] Pre-treatment is performed on the upper and lower split manifolds 101 / 102, the air distribution pipe 6, the cylinder head flange 7, the Y-type connector 9, and the oil rail 8 to remove burrs, oil stains, and other impurities from the surface of the components. All mounting holes (mounting round hole 5, upper connector hole 10, lower connector hole 11, and fixing hole 12) are checked for deformation and blockage to ensure smooth assembly.

[0036] Attach the upper split manifold 101 above the lower split manifold 102, and adjust its position so that the fixing blocks 100 of the upper and lower split manifolds are completely aligned without misalignment;

[0037] Y-shaped connectors 9 are placed at the fixing blocks 100 on the left and right sides respectively, so that the upper connector hole 10 at the upper end of the Y-shaped connector 9 is coaxial with the mounting hole 5 of the fixing block 100.

[0038] Insert the bolts and put on anti-loosening components (such as spring washers) for pre-tightening, but do not tighten them completely yet, leaving room for adjustment during oil rail installation.

[0039] Tighten the bolts connecting the upper and lower split manifolds gradually along the circumferential direction of the fixing block 100 to ensure that the mating surfaces fit tightly without gaps.

[0040] Place the fuel rail 8 below the corresponding Y-type connector 9. Adjust the position of the fuel rail according to the installation requirements of the engine injector so that the fixing hole 12 of the fuel rail 8 is aligned with the lower connector hole 11 at the lower end of the Y-type connector 9.

[0041] Insert and tighten the bolts to secure the oil rail 8 to the Y-type connector 9; repeat the operation to complete the installation of the oil rail on the other side.

[0042] The cylinder head is attached to the intake port of the engine cylinder head by flange 7, and the two are fixedly connected by bolts.

[0043] Install the throttle body onto the throttle body flange 3, adjust its position to ensure that the throttle body is coaxial with the throttle body intake port 4, and then tighten the bolts to complete the fixation.

[0044] Vibration stability verification: Simulate the vibration environment under normal engine operating conditions. After continuous testing for a period of time, check that the Y-type connector 9 and oil rail 8 are not loose and that there is no displacement of any connection parts.

[0045] Intake uniformity verification: Start the engine and check the intake volume of each cylinder to confirm that the intake air can be evenly distributed to each cylinder through the air distribution pipe 6 to meet the engine intake requirements.

[0046] The oil rail is detachably connected to the main body via a Y-shaped connector, which has higher strength and stability than existing technologies and can effectively resist the stress caused by engine vibration.

[0047] During the assembly process, the pre-assembly of the upper and lower split manifolds and the Y-type connectors can be carried out simultaneously, which simplifies the installation steps of the oil rail and improves assembly efficiency.

[0048] The fuel rail can be adjusted in front and back position through the double hole structure at the lower end of the Y-type connector, adapting to the fuel injector installation requirements of different engines and making it more versatile.

[0049] The matching design of the pressure stabilizing chamber, the air distribution pipe and the cylinder head flange ensures uniform and stable air intake, meets the conventional air intake performance requirements of the engine, and provides a clear and feasible technical solution for the actual production and application of the intake manifold.

[0050] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0051] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An intake manifold structure, comprising a body (1) consisting of an upper split manifold (101) and a lower split manifold (102), wherein a pressure stabilizing chamber (2) is formed inside the body (1), the upper split manifold (101) and the lower split manifold (102) are detachably connected to each other, wherein a plurality of air distribution ports are provided on the left and right sides of the lower split manifold (102) along the front-rear direction, and air distribution pipes (6) are connected to the outside of the plurality of air distribution ports, wherein one end of the air distribution pipe (6) on the same side away from the lower split manifold (102) is connected to a single cylinder head flange (7), and an air outlet (19) is provided on the cylinder head flange (7) corresponding to the air distribution pipes (6), characterized in that, The lower edge of the upper split manifold (101) and the upper edge of the lower split manifold (102) are respectively provided with a number of fixing blocks (100) with mounting holes (5) arranged circumferentially. The fixing blocks (100) on the lower edge of the upper split manifold (101) and the upper edge of the lower split manifold (102) correspond to each other. During installation, the upper split manifold (101) and the lower split manifold (102) are installed by bolts and nuts. It also includes two oil rails (8) that are detachably connected to the left and right sides of the lower split manifold (102) and the upper split manifold (101).

2. The intake manifold structure according to claim 1, characterized in that, The oil rail (8) is detachably connected to the lower split manifold (102) via at least two Y-shaped connectors (9).

3. The intake manifold structure according to claim 2, characterized in that, The Y-type connector (9) has upper connector holes (10) at both ends corresponding to two mounting holes (5), and lower connector holes (11) at the lower end. The oil rail (8) has fixing holes (12) that cooperate with it. During installation, the upper split manifold (101), lower split manifold (102) and Y-type connector (9) are installed by using bolts and nuts in conjunction with the upper connector holes (10) and mounting holes (5); the Y-type connector (9) and oil rail (8) are installed by using bolts and nuts in conjunction with the lower connector holes (11) and fixing holes (12).

4. An intake manifold structure according to claim 3, characterized in that, The middle part of the Y-shaped connector (9) is bent, that is, the two upper connector holes (10) face vertically, while the lower connector hole (11) faces horizontally, and the front-to-back width of the lower end of the Y-shaped connector (9) is more than twice the front-to-back width of the upper end.

5. An intake manifold structure according to claim 2, 3, or 4, characterized in that, The lower end of the Y-shaped connector (9) is provided with two lower connector holes (11), which are spaced apart and are located at the same horizontal height.

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