Diesel engine air inlet pipe

Abstract

The utility model provides a diesel engine air inlet pipe which comprises a mounting pipe assembly, an adjusting mechanism used for optimizing the air inlet efficiency of a diesel engine is arranged on the mounting pipe assembly, a connecting assembly is arranged on the adjusting mechanism, and an air inlet assembly used for shunting is arranged on the connecting assembly. Compared with the prior art, the utility model has the following beneficial effects: the adjusting mechanism is arranged, the threaded rod is utilized to drive the connecting block to generate displacement, so that the corrugated resonance box stretches out and draws back to improve the volume, the volume of the corrugated resonance box is adjusted to match with air inlet pressure wave frequencies at different rotating speeds, and the resonance effect is utilized to enhance the air inlet quantity in a specific rotating speed interval; and the air inlet assembly is arranged, the flow dividing pipe is designed through equal-diameter branches, it is ensured that the air inflow of all the air cylinders is consistent, and the problem that air inflow of the air cylinders at the tail end is insufficient due to traditional single-pipe air inflow is solved.

Description

Technical Field

[0001] This utility model belongs to the field of diesel engine intake pipe, and specifically relates to a diesel engine intake pipe. Background Technology

[0002] The diesel engine intake manifold is a key component connecting the air filter and the engine cylinders. Its main function is to provide the engine with sufficient and clean air and optimize the intake airflow to improve combustion efficiency. The intake manifold typically includes straight sections, bends, pressure stabilizing chambers, or resonant chambers. The resonant chamber is used to improve volumetric efficiency by utilizing the intake pulsation effect. However, if the volume of the resonant chamber is not adjustable, it will have significant drawbacks. These drawbacks mainly stem from its inability to adapt to the dynamic demands of the engine under different operating conditions. First, a resonant chamber with a fixed volume will limit the engine's intake efficiency under varying operating conditions. When the diesel engine speed and load change, the pulsation frequency of the intake airflow changes accordingly, and the volume of the resonant chamber needs to be matched to effectively utilize the pressure wave effect to enhance the intake volume. If the volume is not adjustable, the resonance effect can only be achieved at specific speeds. At other speeds, the intake efficiency decreases, resulting in insufficient torque at low speeds or limited power at high speeds. Therefore, we aim to design a diesel engine intake manifold to solve this problem. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a diesel engine intake pipe to solve the problems mentioned in the background art.

[0004] This utility model is achieved through the following technical solution: a diesel engine intake pipe, comprising: an installation pipe assembly, wherein the installation pipe assembly is provided with an adjustment mechanism for optimizing the intake efficiency of the diesel engine, the adjustment mechanism is provided with a connecting component, and the connecting component is provided with an intake component for diverting airflow.

[0005] The adjustment mechanism includes a corrugated resonant box and a mounting plate. The mounting plate is integrally fixedly connected to the upper surface of the main intake pipe. The main intake pipe is fixedly connected to the corrugated resonant box. A drive motor is fixedly mounted on the upper surface of the mounting plate. A threaded rod is fixedly connected to the output shaft of the drive motor via a coupling. A connecting block is threaded onto the outer side of the threaded rod. The connecting block is fixedly connected to the corrugated resonant box. By setting the adjustment mechanism, the threaded rod drives the connecting block to generate displacement, thereby causing the corrugated resonant box to expand and contract to improve its volume. By adjusting the volume of the corrugated resonant box, the intake pressure wave frequency at different speeds can be matched. The resonance effect is used to enhance the intake volume in a specific speed range and improve the cylinder charging efficiency.

[0006] In a preferred embodiment, the mounting pipe assembly includes a main intake pipe, the left end of which is fixedly connected to a mounting flange for connection to the booster system.

[0007] As a preferred embodiment, the corrugated resonant box is a silicone + glass fiber structure used to improve its resistance to burst pressure.

[0008] In a preferred embodiment, the connecting assembly includes a telescopic tube, the left end of which is fixedly connected to a corrugated resonant box, and the right end of which is fixedly connected to a flange, with a sealing gasket provided on the right side surface of the flange.

[0009] In a preferred embodiment, the intake assembly includes a secondary intake pipe. An intake port is integrally and fixedly connected to the left end of the secondary intake pipe, and one end of a split pipe is integrally and fixedly connected to the lower side of the secondary intake pipe. A connecting plate is fixedly connected to the other end of the split pipe. By setting the intake assembly, the split pipe is designed with equal diameter branches to ensure that the intake volume of each cylinder is consistent, thus avoiding the problem of insufficient intake of the end cylinder caused by traditional single-pipe intake.

[0010] In a preferred embodiment, a threaded hole is provided on the left side surface of the air inlet port, and the air inlet port is fixedly connected to the flange by screws. The screws and the threaded hole cooperate to fix the telescopic tube.

[0011] In a preferred embodiment, a second sealing gasket is provided on the lower surface of the connecting plate, and mounting holes for fixing the connecting plate are provided on both the connecting plate and the second sealing gasket.

[0012] In a preferred embodiment, both the sealing gasket and the second sealing gasket are made of fluororubber that is resistant to oil and chemical corrosion.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are:

[0014] 1. By setting an adjustment mechanism, the connecting block is moved by the threaded rod, which causes the bellows resonator to expand and contract to improve its volume. By adjusting the volume of the bellows resonator, the intake pressure wave frequency at different speeds can be matched. The intake volume is enhanced in a specific speed range by using the resonance effect, thereby improving the cylinder charging efficiency.

[0015] 2. By setting up an intake assembly and using an equal-diameter branch design for the split pipe, the intake volume of each cylinder is ensured to be consistent, avoiding the problem of insufficient intake of the end cylinder caused by traditional single-pipe intake. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional view of the overall structure of a diesel engine intake pipe according to the present invention.

[0018] Figure 2 This is an exploded view of a diesel engine intake pipe according to the present invention.

[0019] Figure 3 This is a left view of a diesel engine intake manifold auxiliary intake manifold according to the present invention.

[0020] Figure 4 This is a partial exploded view of the intake pipe of a diesel engine according to the present invention.

[0021] In the diagram, 1-installation pipe assembly, 2-adjustment mechanism, 3-connection assembly, 4-intake assembly;

[0022] 11-Main intake pipe, 12-Mounting flange;

[0023] 21-Corrugated resonant box, 22-Mounting plate, 23-Drive motor, 24-Threaded rod, 25-Connecting block;

[0024] 31-Expansion tube, 311-Flange, 312-Sealing gasket;

[0025] 41-Secondary intake pipe, 42-Intake port, 43-Diverter pipe, 44-Connecting plate, 441-Securing gasket II, 442-Mounting hole. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1 as well as Figure 2 As the first embodiment of this utility model:

[0028] A diesel engine intake pipe includes: an installation pipe assembly 1, an adjustment mechanism 2 for optimizing the intake efficiency of the diesel engine provided on the installation pipe assembly 1, a connecting assembly 3 provided on the adjustment mechanism 2, and an intake assembly 4 for diverting the flow provided on the connecting assembly 3.

[0029] The adjustment mechanism 2 includes a corrugated resonant box 21 and a mounting plate 22. The mounting plate 22 is integrally fixedly connected to the upper surface of the main intake pipe 11. The main intake pipe 11 is fixedly connected to the corrugated resonant box 21. A drive motor 23 is fixedly mounted on the upper surface of the mounting plate 22. A threaded rod 24 is fixedly connected to the output shaft of the drive motor 23 through a coupling. A connecting block 25 is threaded onto the outer side of the threaded rod 24. The connecting block 25 is fixedly connected to the corrugated resonant box 21. By setting the adjustment mechanism 2, the threaded rod 24 drives the connecting block 25 to generate displacement, thereby causing the corrugated resonant box 21 to expand and contract to improve its volume. By adjusting the volume of the corrugated resonant box 21, the intake pressure wave frequency at different speeds can be matched. The resonance effect is used to enhance the intake volume in a specific speed range and improve the cylinder charging efficiency.

[0030] Mounting pipe assembly 1 includes a main intake pipe 11, and a mounting flange 12 is fixedly connected to the left end of the main intake pipe 11 for connection to the booster system.

[0031] The corrugated resonant box 21 is a silicone + glass fiber structure used to improve its resistance to burst pressure.

[0032] The connecting assembly 3 includes a telescopic tube 31. The left end of the telescopic tube 31 is fixedly connected to the corrugated resonant box 21, and the right end of the telescopic tube 31 is fixedly connected to a flange 311. A sealing gasket 312 is provided on the right side surface of the flange 311.

[0033] The intake assembly 4 includes a secondary intake pipe 41. An intake port 42 is integrally and fixedly connected to the left end of the secondary intake pipe 41. One end of a split pipe 43 is integrally and fixedly connected to the lower side of the secondary intake pipe 41. A connecting plate 44 is fixedly connected to the other end of the split pipe 43. By setting the intake assembly 4, the split pipe 43 is designed with equal diameter branches to ensure that the intake volume of each cylinder is consistent, thus avoiding the problem of insufficient intake of the end cylinder caused by traditional single-pipe intake.

[0034] Specifically, during use, the main intake pipe 11 is first connected to the external supercharging system. When it is necessary to adjust the bellows resonator 21, the drive motor 23 is started. The output shaft of the drive motor 23 drives the threaded rod 24 to rotate. During the rotation, the threaded rod 24 moves with the connecting block 25, causing the connecting block 25 to move the bellows resonator 21. The bellows resonator 21 then pushes the telescopic tube 31 to extend or retract to achieve the effect of adjusting the volume of the bellows resonator 21. By adjusting the volume of the bellows resonator 21, the intake pressure wave frequency at different speeds can be matched to improve the cylinder charging efficiency.

[0035] Please see Figure 1 , Figure 3 as well as Figure 4 As a second embodiment of this utility model:

[0036] The intake assembly 4 includes a secondary intake pipe 41. An intake port 42 is integrally and fixedly connected to the left end of the secondary intake pipe 41. One end of a split pipe 43 is integrally and fixedly connected to the lower side of the secondary intake pipe 41. A connecting plate 44 is fixedly connected to the other end of the split pipe 43. By setting the intake assembly 4, the split pipe 43 is designed with equal diameter branches to ensure that the intake volume of each cylinder is consistent, thus avoiding the problem of insufficient intake of the end cylinder caused by traditional single-pipe intake.

[0037] A threaded hole is provided on the left side surface of the air inlet port 42. The air inlet port 42 is fixedly connected to the flange 311 by screws. The screws and the threaded hole cooperate to fix the telescopic tube 31.

[0038] A second sealing gasket 441 is provided on the lower surface of the connecting plate 44, and mounting holes 442 for fixing the connecting plate 44 are provided on both the connecting plate 44 and the second sealing gasket 441.

[0039] Both gasket 312 and gasket 441 are made of fluororubber that is resistant to oil and chemical corrosion.

[0040] Based on the above embodiments, during installation, the auxiliary intake pipe 41 is first connected to the flange 311 and the sealing gasket 441 on the telescopic pipe 31 by screws. Then, the connecting plate 44 is connected to the intake end of the diesel engine by external screws to fix the connecting plate 44, the auxiliary intake pipe 41 and the splitter pipe 43. In use, the high-pressure gas pressurized by the external supercharging system enters the interior of the auxiliary intake pipe 41 from the main intake pipe 11 through the telescopic pipe 31, and then is evenly distributed to the intake position of the diesel engine after being split by the equal-diameter splitter pipe 43.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A diesel engine intake manifold, comprising: The mounting pipe assembly (1) is characterized in that the mounting pipe assembly (1) is provided with an adjustment mechanism (2) for optimizing the intake efficiency of the diesel engine, the adjustment mechanism (2) is provided with a connecting component (3), and the connecting component (3) is provided with an intake component (4) for diverting the flow. The adjustment mechanism (2) includes a corrugated resonant box (21) and a mounting plate (22). The mounting plate (22) is integrally fixedly connected to the upper surface of the main intake pipe (11). The main intake pipe (11) is fixedly connected to the corrugated resonant box (21). A drive motor (23) is fixedly installed on the upper surface of the mounting plate (22). A threaded rod (24) is fixedly connected to the output shaft of the drive motor (23) through a coupling. A connecting block (25) is screwed onto the outside of the threaded rod (24) through a thread. The connecting block (25) is fixedly connected to the corrugated resonant box (21).

2. The diesel engine intake manifold as described in claim 1, characterized in that: The mounting pipe assembly (1) includes a main intake pipe (11), and a mounting flange (12) is fixedly connected to the left end of the main intake pipe (11) for connection with the booster system.

3. The diesel engine intake manifold as described in claim 1, characterized in that: The corrugated resonant box (21) is a silicone + glass fiber structure used to improve its resistance to burst pressure.

4. The diesel engine intake manifold as described in claim 1, characterized in that: The connecting assembly (3) includes a telescopic tube (31), the left end of which is fixedly connected to the corrugated resonant box (21), and the right end of which is fixedly connected to a flange (311), and a sealing gasket (312) is provided on the right side surface of the flange (311).

5. A diesel engine intake manifold as described in claim 1, characterized in that: The intake assembly (4) includes a secondary intake pipe (41), with an intake port (42) integrally fixedly connected to the left end of the secondary intake pipe (41), and one end of a split pipe (43) integrally fixedly connected to the lower side of the secondary intake pipe (41), with a connecting plate (44) fixedly connected to the other end of the split pipe (43).

6. A diesel engine intake manifold as described in claim 5, characterized in that: A threaded hole is provided on the left side surface of the air inlet port (42), and the air inlet port (42) is fixedly connected to the flange (311) by screws.

7. A diesel engine intake manifold as described in claim 5, characterized in that: The lower surface of the connecting plate (44) is provided with a sealing gasket 2 (441), and both the connecting plate (44) and the sealing gasket 2 (441) are provided with mounting holes (442) for fixing and installing the connecting plate (44).

8. A diesel engine intake manifold as described in claim 7, characterized in that: Both the sealing gasket (312) and the second sealing gasket (441) are made of fluororubber with oil resistance and chemical corrosion resistance.

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