Lightweight intake manifold assembly

Abstract

The utility model is suitable for the technical field of automobile engine air inlet assembly structures, and particularly relates to a light-weight air inlet manifold assembly which comprises an air inlet bent pipe and an integrated air inlet manifold body which are both made of plastic materials. The integrated intake manifold body comprises an intake straight pipe section and a plurality of arc-shaped intake connector pipe sections, wherein the intake straight pipe section and the arc-shaped intake connector pipe sections are integrally formed through injection molding. The air inlet bent pipe and the integrated air inlet manifold main body are respectively made of plastic materials, and the air inlet straight pipe section and the plurality of arc-shaped air inlet connector pipe sections are constructed by adopting an integrated injection molding process, so that the light weight of the whole structure is realized while the structural strength is ensured, and the manufacturing cost is reduced. The arc-shaped air inlet connector pipe section is arranged on the outer side of the air inlet straight pipe section, compact arrangement and air flow distribution are facilitated, and the assembly and an external device can be rapidly assembled through the arrangement of the installation flange.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile engine intake assembly structure, specifically a kind of lightweight intake manifold assembly. BACKGROUND

[0002] At present, with the increasing requirements of automobile industry on engine lightweight, high efficiency and low emission performance, as the important component part influencing engine performance, the structure design and material selection of intake system are widely concerned. The traditional intake manifold is usually made of cast aluminum material, which not only has large mass and complex machining process, but also has problems such as poor sealing and structural stress concentration in assembly process, so it is difficult to meet the integrated design requirements of modern engine on compact structure, assembly accuracy and air tightness. In addition, the components of traditional intake manifold are mostly split structure, the connection mode is complicated, the overall rigidity is weak, the machining and assembly error is large, which easily causes unstable airflow passage and affects the engine intake efficiency.

[0003] Therefore, it is urgent to provide a compact structure, light weight, high forming precision and reliable sealing performance intake manifold assembly to solve the problems of large structure weight, complex connection and poor sealing performance in the prior art, so as to improve the overall performance and assembly consistency of engine operation. SUMMARY

[0004] The purpose of the embodiment of the utility model is to provide a lightweight intake manifold assembly, which aims to solve the technical problems mentioned in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A lightweight intake manifold assembly, comprising an intake elbow and an integrated intake manifold body, the intake elbow and the integrated intake manifold body are both made of plastic material, the integrated intake manifold body comprises an integrated injection molded intake straight pipe section and a plurality of arc-shaped intake interface pipe sections, and the arc-shaped intake interface pipe sections are arranged on the outer side of the intake straight pipe section, and a mounting flange is arranged on the outer side of the plurality of arc-shaped intake interface pipe sections.

[0007] One end of the intake elbow is provided with a positioning groove, one end of the intake straight pipe section is provided with a positioning mounting lug, and the intake elbow and the intake straight pipe section are connected by welding.

[0008] Further, the positioning mounting lug is inserted into the inside of the positioning groove, and the thickness of the positioning mounting lug is matched with the inner cavity width of the positioning groove.

[0009] Further, the surface of the intake straight pipe section is provided with a first reinforcing rib, and the first reinforcing rib extends along the axial direction of the intake straight pipe section and is distributed in linear strip shape.

[0010] Further, the surface of the air inlet straight pipe section, the arc-shaped air inlet interface pipe section and the mounting flange is provided with a second reinforcing rib in a continuous transition structure extending along the connecting area of the air inlet straight pipe section, the arc-shaped air inlet interface pipe section and the mounting flange.

[0011] Further, the inside of the mounting flange is provided with a third reinforcing rib in a grid distribution structure.

[0012] Further, the surface of the mounting flange is provided with a plurality of mounting bushings.

[0013] Further, the surface of the mounting flange is provided with a plurality of mounting grooves, and the inside of the mounting grooves is provided with a sealing ring.

[0014] Further, one end of the integrated air inlet manifold body is provided with a closed end cover.

[0015] The light-weight air inlet manifold assembly has the following beneficial effects:

[0016] The air inlet elbow and the integrated air inlet manifold body are made of plastic material, and the air inlet straight pipe section and the plurality of arc-shaped air inlet interface pipe sections are formed by one-piece injection molding, so that the light weight of the overall structure is realized while the structural strength is ensured, and the manufacturing cost is reduced.The arc-shaped air inlet interface pipe section is arranged outside the air inlet straight pipe section, which is beneficial to compact arrangement and air flow distribution, and the mounting flange is convenient for quick assembly of the assembly and external devices. The air inlet elbow and the air inlet straight pipe section are connected by welding, and are provided with a positioning groove and a positioning mounting lug structure, so that accurate positioning in the assembly process is realized, the connection strength and air tightness are improved, the overall structure is compact, the assembly efficiency is high, and the comprehensive requirements of light weight and reliability of modern engines are met. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a front structure schematic view of a light-weight air inlet manifold assembly.

[0018] Figure 2 It is a back structure schematic view of a light-weight air inlet manifold assembly.

[0019] Figure 3 It is a structure schematic view of an air inlet elbow and a closed end cover in a light-weight air inlet manifold assembly in a separated state from an air inlet straight pipe section.

[0020] Figure 4 It is an enlarged view of A of a light-weight air inlet manifold assembly. Figure 1

[0021] In the diagram: 1. Inlet bend; 2. Inlet straight section; 3. First reinforcing rib; 4. Closed end cap; 5. Second reinforcing rib; 6. Arc-shaped inlet interface section; 7. Mounting flange; 8. Third reinforcing rib; 9. Mounting bushing; 10. Positioning groove; 11. Positioning mounting lug; 12. Mounting groove; 13. Sealing ring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0024] like Figures 1-4 As shown in the figure, a lightweight intake manifold assembly provided by this utility model includes an intake bend 1 and an integrated intake manifold body, with a closed end cap 4 provided at one end of the integrated intake manifold body.

[0025] Both the intake bend 1 and the integrated intake manifold body are made of plastic. The integrated intake manifold body includes an integrally injection-molded intake straight pipe section 2 and several arc-shaped intake interface pipe sections 6. The arc-shaped intake interface pipe sections 6 are located on the outside of the intake straight pipe section 2, and the outer sides of the several arc-shaped intake interface pipe sections 6 are all provided with mounting flanges 7.

[0026] One end of the intake bend 1 is provided with a positioning groove 10, and one end of the intake straight pipe section 2 is provided with a positioning mounting lug 11. The intake bend 1 and the intake straight pipe section 2 are connected by welding. The positioning mounting lug 11 is inserted into the inside of the positioning groove 10, and the thickness of the positioning mounting lug 11 is adapted to the inner cavity width of the positioning groove 10.

[0027] In one embodiment of this utility model, the intake bend 1 and the intake straight section 2 are independent components, manufactured by plastic injection molding. The intake straight section 2 and several arc-shaped intake interface sections 6 constitute an integrated intake manifold body, which is an integral injection-molded structure. This structure, through optimized mold design and injection path, achieves simultaneous molding of multiple interface sections and the main intake channel, effectively reducing the number of parts and subsequent assembly steps, and improving production efficiency.

[0028] The inlet elbow 1 is connected with the inlet straight pipe section 2 by welding, and a positioning groove 10 and a positioning mounting lug 11 are arranged at the welding joint, the positioning mounting lug 11 is inserted into the inside of the positioning groove 10, and the two are tightly matched, the thickness of the lug is matched with the inner cavity width of the groove. The insertion structure can realize reliable structural alignment before welding, avoid component misalignment or deviation, be beneficial to alignment accuracy control in the welding process, and enhance the structural stability after welding.

[0029] One end of the integrated inlet manifold body is provided with a closed end cover 4 to form a closed structure, so as to block unused interfaces or play a structure closing role, ensure stable flow of air flow in the inlet channel, and prevent external air leakage or impurities from entering the system.

[0030] A plurality of arc-shaped inlet interface pipe sections 6 are arranged on the outside of the inlet straight pipe section 2 to realize the function of multiple branch gas output. The arc-shaped design is convenient for adapting to the layout of the engine inlet, reduces the installation space requirement and optimizes the gas flow path. The outside of the plurality of arc-shaped inlet interface pipe sections 6 is commonly provided with a mounting flange 7, the mounting flange 7 is used as a connecting interface to be fixedly assembled with an external inlet system, so as to ensure that each interface section has stable support and sealing basis in a working state.

[0031] Through the cooperation of the above structure, the embodiment realizes lightweight design while maintaining the overall structural strength and sealing performance, is suitable for a car inlet system platform which requires compact structure, strong air tightness and easy batch production, and has good engineering practical value.

[0032] In the embodiment, the surface of the inlet straight pipe section 2 is provided with a first reinforcing rib 3, and the first reinforcing rib 3 extends in the axial direction of the inlet straight pipe section 2 and is distributed in a linear strip shape.

[0033] The structure is used to enhance the structural rigidity of the inlet straight pipe section 2 after injection molding, effectively improves the bending strength and deformation resistance in the use process. By arranging the reinforcing rib in the linear direction, the local deformation of the pipe wall caused by factors such as air flow pulsation, engine vibration or thermal expansion and cold contraction can be inhibited without significantly increasing the overall weight, so as to ensure the stability of the inlet path and prolong the service life of the inlet manifold assembly.

[0034] In the embodiment, the surfaces of the inlet straight pipe section 2, the arc-shaped inlet interface pipe section 6 and the mounting flange 7 are commonly provided with a second reinforcing rib 5, and the second reinforcing rib 5 is in a continuous transition structure and extends along the connection area of the inlet straight pipe section 2, the arc-shaped inlet interface pipe section 6 and the mounting flange 7.

[0035] The structure is used for enhancing the overall strength of each structural section at the connection transition, forming an integrated reinforcing support at the intersection area of different components, effectively reducing the risk of local deformation caused by material thickness change or stress concentration. The continuous transition design forms a uniform force transmission path between structures, thereby improving the fatigue resistance and durability stability of the entire intake manifold body under high temperature and high pressure conditions.

[0036] In the embodiment, the inside of the mounting flange 7 is provided with a third reinforcing rib 8, and the third reinforcing rib 8 is in a grid-shaped distribution structure.

[0037] The structure is used for enhancing the overall compression resistance and torsional rigidity of the mounting flange 7, forming a stable support frame inside by the longitudinal and transverse intersecting ribs, effectively dispersing the local stress caused by bolt pre-tightening force during the mounting process. The grid-shaped layout enables the flange to remain shape stable under multi-point force state, preventing deformation or loosening of the flange caused by long-term use, thereby improving the sealing performance and assembly reliability of the intake manifold assembly at the connection part.

[0038] The first reinforcing rib 3, the second reinforcing rib 5 and the third reinforcing rib 8 are respectively arranged in the intake straight pipe section 2, the connection area and the inside of the mounting flange 7, and form a continuous reinforcing system from the main channel, the transition area to the connection port in structure. The first reinforcing rib 3 enhances the axial rigidity of the intake straight pipe section 2, so that the main part has good bending resistance and stability, providing structural foundation support for the entire intake channel. The second reinforcing rib 5, as a continuous transition rib of the connection area, forms a force continuation with the first reinforcing rib 3, effectively disperses the stress concentration at the intersection of the intake straight pipe section 2, the arc-shaped intake interface pipe section 6 and the mounting flange 7, and improves the overall durability of the connection part. The third reinforcing rib 8 further enhances the compression resistance of the mounting flange 7 during the bolt locking process, avoiding local deformation of the end due to uneven stress, thereby consolidating the sealing reliability of the flange connection.

[0039] The three form a synergistic cooperation in structure and function, enabling the intake manifold assembly to maintain the stability of overall strength and sealing performance under multiple environments of vibration, thermal stress and assembly force, significantly improving the service life and engineering adaptability of the product.

[0040] In the embodiment, the surface of the mounting flange 7 is provided with a plurality of mounting bushings 9. Used for cooperating with external fasteners for installation. The structure introduces local reinforcing parts in the plastic mounting flange 7, which can effectively improve the compression strength and wear resistance of the bolt connection area, prevent hole deformation, cracking or fatigue failure caused by repeated disassembly or long-term stress of the bolt. The mounting bushing 9 can also ensure the positioning accuracy of the bolt during the installation process, making the connection process more stable and reliable, thereby enhancing the assembly strength and structural durability of the intake manifold assembly under actual working conditions.

[0041] In the embodiment, the surface of the mounting flange 7 is provided with a plurality of mounting grooves 12, and the inside of the mounting grooves 12 is provided with sealing rings 13, which are used to provide sealing function when the intake manifold assembly is connected with external components.

[0042] By providing the groove structure on the mounting flange 7, the sealing ring 13 can be accurately limited and formed in a compressed state during assembly, thereby realizing reliable radial or axial sealing. The structure can effectively prevent gas leakage during the intake process, improve the air tightness and working efficiency of the intake system, and avoid impurities such as dust and water vapor from entering the system, thereby ensuring the normal operation and service life of the engine.

[0043] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A light-weighted intake manifold assembly comprising an intake bend pipe (1) and an integrated intake manifold body, characterized in that, The intake elbow (1) and the integrated intake manifold body are both made of plastic material, the integrated intake manifold body includes an integrated injection molded intake straight pipe section (2) and a plurality of arc-shaped intake interface pipe sections (6), and the arc-shaped intake interface pipe sections (6) are arranged on the outer side of the intake straight pipe section (2), and the outer sides of the plurality of arc-shaped intake interface pipe sections (6) are commonly provided with a mounting flange (7); One end of the intake elbow (1) is provided with a positioning groove (10), one end of the intake straight pipe section (2) is provided with a positioning mounting lug (11), and the intake elbow (1) and the intake straight pipe section (2) are connected by welding.

2. The lightweight intake manifold assembly of claim 1, wherein, The positioning mounting lug (11) is inserted into the inside of the positioning groove (10), and the thickness of the positioning mounting lug (11) is matched with the inner cavity width of the positioning groove (10).

3. The lightweight intake manifold assembly of claim 1, wherein, The surface of the intake straight pipe section (2) is provided with a first reinforcing rib (3), and the first reinforcing rib (3) extends along the axial direction of the intake straight pipe section (2) and is distributed in a linear strip shape.

4. The lightweight intake manifold assembly of claim 1, wherein, The surfaces of the intake straight pipe section (2), the arc-shaped intake interface pipe section (6) and the mounting flange (7) are commonly provided with a second reinforcing rib (5), and the second reinforcing rib (5) is in a continuous transition structure and extends along the connection area of the intake straight pipe section (2), the arc-shaped intake interface pipe section (6) and the mounting flange (7).

5. The lightweight intake manifold assembly of claim 1, wherein, The inside of the mounting flange (7) is provided with a third reinforcing rib (8), and the third reinforcing rib (8) is in a grid distribution structure.

6. The lightweight intake manifold assembly of claim 1, wherein, The surface of the mounting flange (7) is provided with a plurality of mounting bushings (9).

7. The lightweight intake manifold assembly of claim 1, wherein, The surface of the mounting flange (7) is provided with a plurality of mounting grooves (12), and the inside of the mounting groove (12) is provided with a sealing ring (13).

8. The lightweight intake manifold assembly of claim 1, wherein, One end of the integrated intake manifold body is provided with a closed end cover (4).

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