An optimized structure for the intake manifold of a methanol engine

Abstract

This application relates to the technical field of engine intake manifolds, and in particular to an optimized structure for a methanol engine intake manifold, including an intake chamber, an intake pipe fixedly connected to the top of the intake chamber, a connecting ring fixedly connected to the outer wall of the intake pipe, an intake manifold fixedly connected to the front of the intake chamber, and a guide vane fixedly connected to the inner wall of the intake manifold. This invention, through the symmetrical guide vane on the inner wall of the intake manifold, which includes components such as the intake manifold, guide vane, and connecting pipe, guides the airflow smoothly, avoiding turbulence and laying the foundation for methanol-air mixing. The horizontal array of methanol nozzle mounting holes on the connecting pipe enables uniform methanol injection. Combined with a rotatable flap to adjust the airflow speed, it promotes initial mixing of methanol and air. The horn-shaped mixing chamber expands the mixing space, and the annular array of spiral guide vanes inside the fixed pipe rotates and stirs the mixed airflow, further improving mixing uniformity and ensuring more complete combustion.

Description

Technical Field

[0001] This application relates to the technical field of engine intake manifolds, and in particular to an optimized structure for a methanol engine intake manifold. Background Technology

[0002] A methanol engine is an internal combustion engine that uses methanol (CH3OH) as its main fuel. It releases chemical energy by burning methanol and converts it into mechanical energy to drive vehicles, ships, construction machinery and other equipment. The core element is the use of methanol as the main energy source, including pure methanol (M100), mixed methanol or a dual-fuel mode. Based on the basic cycle of internal combustion engines (four-stroke or two-stroke), methanol is mixed with air and burned in the cylinder, pushing the piston to do work. Through the oxidation-reduction reaction of methanol, chemical energy is converted into mechanical energy. It also has the characteristics of being environmentally friendly, having diverse fuel sources and adjustable performance, making it an important power choice in the context of energy diversification.

[0003] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: In the prior art, when methanol engines are intaked through the manifold, the airflow is turbulent within the pipe, making it difficult for methanol and air to mix evenly. This results in incomplete combustion of the engine, which not only reduces the engine's power performance and consumes more fuel, but also increases exhaust emissions. Utility Model Content

[0004] In order to improve the utilization rate by fully mixing the gas in the intake manifold, this application provides an optimized structure for the intake manifold of a methanol engine.

[0005] This application provides an optimized structure for the intake manifold of a methanol engine, which adopts the following technical solution: it includes an intake chamber, an intake pipe is fixedly connected to the top of the intake chamber, and a connecting ring is fixedly connected to the outer wall of the intake pipe; An intake manifold is fixedly connected to the front of the intake chamber. A guide vane is fixedly connected to the inner wall of the intake manifold. The number of guide vanes is several, and the several guide vanes are arranged symmetrically. A connecting pipe is fixedly connected to the front of the intake manifold. A mixing chamber is fixedly connected to the front of the connecting pipe. The mixing chamber is horn-shaped. A fixing pipe is fixedly connected to the front of the mixing chamber.

[0006] Optionally, a spiral guide plate is fixedly connected to the inner wall of the fixed tube, and the number of spiral guide plates is several, which are arranged in a ring array. A connecting ring II is fixedly connected to the front of the fixed tube.

[0007] Optionally, a rotating rod is rotatably connected to the inner wall of the connecting pipe, and a flap is fixedly connected to the outer wall of the rotating rod. The flap controls the cross-sectional area of ​​the air intake channel, adjusts the airflow speed and flow characteristics, improves the mixing quality of methanol and air, and enhances combustion stability and efficiency.

[0008] Optionally, a methanol nozzle mounting hole is provided at the top of the connecting pipe, and the number of methanol nozzle mounting holes is several, which are arranged in a horizontal array.

[0009] Optionally, a second connecting ring is fixedly connected to the front of the fixed tube, and the number of the second connecting rings is several, which are arranged in a horizontal array.

[0010] Optionally, a controller is fixedly connected to the right side of the air intake chamber, and a heating tube is fixedly connected to the left output end of the controller, with the outer wall of the heating tube in contact with the inner wall of the air intake chamber.

[0011] Optionally, a waste heat recovery pipe is fixedly connected to the outer wall of the intake manifold. The waste heat recovery pipe can recover the heat generated by the engine and heat the intake manifold. An air supply pipe is fixedly connected to the right side of the waste heat recovery pipe, and a connecting pipe II is fixedly connected to the left side of the waste heat recovery pipe.

[0012] Optionally, the number of waste heat recovery tubes is several, and the several waste heat recovery tubes are arranged in a horizontal array.

[0013] In summary, this application includes the following beneficial technical effects: 1. This utility model, through the configuration of an intake manifold, guide vanes, and connecting pipe, etc., uses symmetrical guide vanes on the inner wall of the intake manifold to guide the airflow smoothly and avoid airflow turbulence, laying the foundation for the mixing of methanol and air. The horizontal array of methanol nozzle mounting holes on the connecting pipe can achieve uniform methanol injection. Combined with a rotatable flap to adjust the airflow speed, it promotes the initial mixing of methanol and air. The trumpet-shaped mixing chamber expands the mixing space, and the spiral guide vanes in the fixed pipe make the mixed airflow rotate and stir, further improving the mixing uniformity and ensuring more complete combustion.

[0014] 2. This utility model uses a controller on the right side of the intake chamber, which includes components such as a heating tube, a waste heat recovery tube, and an air delivery tube, to control the operation of the heating tube, preheat the intake air, improve the methanol atomization effect, and reduce energy loss. The transverse array of waste heat recovery tubes on the outer wall of the intake manifold can recover the waste heat generated by the engine. The waste heat is recycled through the air delivery tube and connecting pipe, effectively reducing energy waste and improving the overall energy utilization rate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the guide vane in the embodiment of this application; Figure 3 This is a schematic diagram of the arc-shaped structure in an embodiment of this application; Figure 4 This is a schematic diagram of the heating tube structure in an embodiment of this application; Figure 5 This is a schematic diagram of the waste heat recovery pipe in an embodiment of this application.

[0016] Reference numerals in the attached diagram: 1. Intake chamber; 11. Intake pipe; 12. Connecting ring one; 2. Intake manifold; 21. Guide vane; 22. Connecting pipe one; 221. Methanol nozzle mounting hole; 23. Rotating rod; 231. Flip plate; 24. Mixing chamber; 25. Fixing pipe; 251. Spiral guide plate; 26. Connecting ring two; 3. Controller; 31. Heating pipe; 32. Gas delivery pipe; 33. Waste heat recovery pipe; 34. Connecting pipe two. Detailed Implementation

[0017] The following is in conjunction with the appendix Figures 1-5 This application will be further described in detail below. The technical solutions in the embodiments of this application will be clearly described 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.

[0018] This application discloses an optimized structure for the intake manifold of a methanol engine. For example... Figure 1 As shown, it includes an air intake chamber 1, an air intake pipe 11 is fixedly connected to the top of the air intake chamber 1, and a connecting ring 12 is fixedly connected to the outer wall of the air intake pipe 11.

[0019] In this embodiment, an intake manifold 2 is fixedly connected to the front of the intake chamber 1, and a guide vane 21 is fixedly connected to the inner wall of the intake manifold 2. The number of guide vanes 21 is several, and the several guide vanes 21 are arranged symmetrically. A connecting pipe 22 is fixedly connected to the front of the intake manifold 2, and a mixing chamber 24 is fixedly connected to the front of the connecting pipe 22. The mixing chamber 24 is horn-shaped. The horn-shaped mixing chamber can make the gas and methanol fully mixed before entering the engine, thereby improving fuel efficiency. A fixing pipe 25 is fixedly connected to the front of the mixing chamber 24.

[0020] Please see Figure 3 As shown, a connecting ring 26 is fixedly connected to the front of the fixed tube 25. There are several connecting rings 26 arranged in a horizontal array.

[0021] Please see Figure 3As shown, a spiral guide plate 251 is fixedly connected to the inner wall of the fixed tube 25. There are several spiral guide plates 251 arranged in a ring array. The spiral guide plates 251 arranged in a ring array can increase the gas flow rate, so that the mixed gas can quickly enter the engine. A connecting ring 26 is fixedly connected to the front of the fixed tube 25.

[0022] Please see Figure 4 As shown, a controller 3 is fixedly connected to the right side of the air intake chamber 1. The controller 3 is model AEM30-3304, which enables it to control the temperature of the heating tube 31 and preheat the gas in the air intake chamber 1. The heating tube 31 is fixedly connected to the left output end of the controller 3. The outer wall of the heating tube 31 is in contact with the inner wall of the air intake chamber 1, so that the device can preheat the gas under relatively cold conditions.

[0023] Please see Figure 3 As shown, a rotating rod 23 is rotatably connected to the inner wall of the connecting pipe 22, and a flap 231 is fixedly connected to the outer wall of the rotating rod 23.

[0024] Please see Figure 5 As shown, a waste heat recovery pipe 33 is fixedly connected to the outer wall of the intake manifold 2. An air supply pipe 32 is fixedly connected to the right side of the waste heat recovery pipe 33. A connecting pipe 34 is fixedly connected to the left side of the waste heat recovery pipe 33. There are several waste heat recovery pipes 33, and the several waste heat recovery pipes 33 are arranged in a horizontal array.

[0025] Please see Figure 2 As shown, the top of the connecting pipe 22 is provided with a methanol nozzle mounting hole 221. There are several methanol nozzle mounting holes 221 arranged in a horizontal array.

[0026] The implementation principle of the optimized structure of the intake manifold of a methanol engine in this application embodiment is as follows: When the engine is working, air enters the intake chamber 1 through the intake pipe 11. The controller 3 activates the heating tube 31 according to the working state to preheat the airflow on the inner wall of the intake chamber 1. The preheated airflow enters the intake manifold 2 and maintains a stable flow under the guidance of the symmetrical guide vanes 21. Then it flows through the connecting pipe 22. At this time, methanol is evenly sprayed out through the horizontally arrayed methanol nozzle mounting holes 221. The flap 231 adjusts the airflow speed by rotating, so that methanol and air are initially mixed in the connecting pipe 22. The initially mixed gas-liquid mixture enters the funnel-shaped mixing chamber 24. The large-diameter end of the mixing chamber 24 is connected to the connecting pipe 22 in the direction of the flap, which reduces the air velocity entering the premixing chamber, increases the residence time, and improves the mixing efficiency. The air further merges in the expanded space and then flows into the fixed pipe 25. The annular array spiral guide plate 251 in the fixed pipe 25 causes the mixed airflow to rotate, achieving deep stirring and mixing, and ensuring uniform mixing. At the same time, the waste heat recovery pipe 33 on the outer wall of the intake manifold 2 recovers the waste heat of the engine. The heat from the waste heat is then transferred to the outer wall of the intake manifold 2 through the air supply pipe 32 and the connecting pipe 34. The entire process achieves the goal of improving the mixing effect and efficient energy utilization through the coordinated work of various components.

[0027] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An optimized structure for a methanol engine intake manifold, comprising an intake chamber (1), characterized in that: An air intake pipe (11) is fixedly connected to the top of the air intake chamber (1), and a connecting ring (12) is fixedly connected to the outer wall of the air intake pipe (11). The intake chamber (1) is fixedly connected to the front of the intake manifold (2), and the inner wall of the intake manifold (2) is fixedly connected to the guide vane (21). The number of guide vanes (21) is several, and the several guide vanes (21) are arranged symmetrically. The intake manifold (2) is fixedly connected to the front of the first connecting pipe (22), and the first connecting pipe (22) is fixedly connected to the front of the mixing chamber (24). The mixing chamber (24) is arranged in a trumpet shape, and the front of the mixing chamber (24) is fixedly connected to the fixed pipe (25).

2. The optimized structure of the intake manifold for a methanol engine according to claim 1, characterized in that: The inner wall of the fixed tube (25) is fixedly connected with a spiral guide plate (251). The number of spiral guide plates (251) is several, and the spiral guide plates (251) are arranged in a ring array. The front of the fixed tube (25) is fixedly connected with a connecting ring two (26).

3. The optimized structure of the intake manifold for a methanol engine according to claim 1, characterized in that: The inner wall of the connecting pipe (22) is rotatably connected to a rotating rod (23), and the outer wall of the rotating rod (23) is fixedly connected to a flap (231).

4. The optimized structure of a methanol engine intake manifold according to claim 1, characterized in that: The top of the connecting pipe (22) is provided with a methanol nozzle mounting hole (221), and the number of methanol nozzle mounting holes (221) is several, and the several methanol nozzle mounting holes (221) are arranged in a horizontal array.

5. The optimized structure of a methanol engine intake manifold according to claim 2, characterized in that: The front of the fixed tube (25) is fixedly connected to a connecting ring two (26), and the number of the connecting ring two (26) is several, and the several connecting ring two (26) are arranged in a horizontal array.

6. The optimized structure of the intake manifold for a methanol engine according to claim 1, characterized in that: A controller (3) is fixedly connected to the right side of the air intake chamber (1), and a heating tube (31) is fixedly connected to the left output end of the controller (3). The outer wall of the heating tube (31) is in contact with the inner wall of the air intake chamber (1).

7. The optimized structure of a methanol engine intake manifold according to claim 1, characterized in that: The outer wall of the intake manifold (2) is fixedly connected to a waste heat recovery pipe (33), the right side of the waste heat recovery pipe (33) is fixedly connected to a gas transmission pipe (32), and the left side of the waste heat recovery pipe (33) is fixedly connected to a connecting pipe (34).

8. The optimized structure of the intake manifold for a methanol engine according to claim 7, characterized in that: The number of waste heat recovery tubes (33) is several, and the several waste heat recovery tubes (33) are arranged in a horizontal array.

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