Air inlet pipe suitable for methanol engine

Abstract

The utility model relates to the field of methanol engines, in particular to an air inlet pipe suitable for a methanol engine, which comprises a front air inlet pipe, a middle air inlet pipe and a rear air inlet pipe, the front air inlet pipe is communicated with the middle air inlet pipe, and the middle air inlet pipe is communicated with the rear air inlet pipe. The front air inlet pipe, the middle air inlet pipe and the rear air inlet pipe are each provided with at least two air inlets, a main air inlet pipe is arranged below the middle air inlet pipe and communicated with an air filter pipeline of the methanol engine, air inlet pipe flanges are arranged at the air inlets, and the air inlet pipes are installed on a cylinder cover of the methanol engine through the air inlet pipe flanges. The problem of non-uniform air intake of the methanol engine air intake pipe at the present stage is solved.

Description

Technical Field

[0001] The utility model relates to the field of methanol engines, and in particular to an intake pipe suitable for a methanol engine. Background Art

[0002] Among all kinds of product machinery, the problem of uniform air intake in the intake pipe is a more difficult problem to solve, especially for methanol engines. The exploration of the technology of uniform air intake in the intake pipe of methanol engines is the most common thing. Not only the uniform air intake in the intake pipe needs to be considered, but also the installation of the methanol nozzle on the intake pipe needs to be considered.

[0003] An intake pipe suitable for a methanol engine is now proposed, which meets the power performance of the original engine with minor changes to the original engine, improves the problem of uneven intake and improves performance. Utility Model Content

[0004] The utility model provides an intake pipe suitable for a methanol engine, which solves the problem of uneven intake of the intake pipe of the methanol engine at present proposed in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an intake pipe suitable for a methanol engine, comprising a front intake pipe, a middle intake pipe and a rear intake pipe, the front intake pipe and the middle intake pipe are connected, the middle intake pipe and the rear intake pipe are connected, the front intake pipe and the middle intake pipe are communicated, the middle intake pipe and the rear intake pipe are communicated, the front intake pipe, the middle intake pipe and the rear intake pipe are each provided with at least two air inlets, a main intake pipe is provided below the middle intake pipe, the main intake pipe is communicated with the air filter pipeline of the methanol engine, an intake pipe flange is provided at the air inlet, the intake pipe suitable for a methanol engine is installed on the cylinder head of the methanol engine through the intake pipe flange, a methanol nozzle mounting hole and a gasoline nozzle mounting hole are also provided on the intake pipe, and a methanol nozzle and a gasoline nozzle are respectively installed in the methanol nozzle mounting hole and the gasoline nozzle mounting hole.

[0006] Preferably, the front intake pipe is provided with a first-cylinder intake port and a second-cylinder intake port, the middle intake pipe is provided with a third-cylinder intake port and a fourth-cylinder intake port, the rear intake pipe is provided with a fifth-cylinder intake port and a sixth-cylinder intake port, the third-cylinder intake port and the fourth-cylinder intake port are connected via a manifold, and the third-cylinder intake port, the fourth-cylinder intake port and the manifold form a hollow box shape.

[0007] Preferably, corresponding to the one-cylinder to six-cylinder air intake ports, each air intake port is correspondingly provided with a methanol nozzle mounting hole and a gasoline nozzle mounting hole, the methanol nozzle mounting hole and the gasoline nozzle mounting hole are both installed on the air passage on the back of the intake valve seat ring valve, the gasoline nozzle mounting hole is located below the methanol nozzle mounting hole, the angle between the central axis of the methanol nozzle mounting hole and the horizontal Y-axis is 0°, the angle between the central axis of the gasoline nozzle mounting hole and the horizontal Y-axis is 30°, a methanol nozzle is installed in the methanol nozzle mounting hole, and a gasoline nozzle is installed in the gasoline nozzle mounting hole.

[0008] Preferably, one end of the methanol nozzle is installed in the methanol nozzle mounting hole, and the other end is installed on the methanol rail, one end of the gasoline nozzle is installed in the gasoline nozzle mounting hole, and the other end is installed on the gasoline rail, and a methanol rail mounting seat and a gasoline rail mounting seat are also provided on the air passage on the back of the intake valve seat ring valve, the methanol rail is detachably mounted on the methanol rail mounting seat via a bracket, and the gasoline rail is detachably mounted on the gasoline rail mounting seat via a bracket.

[0009] Preferably, the front air intake pipe and the middle air intake pipe are sealed by a sealing gasket, and the middle air intake pipe and the rear air intake pipe are sealed by a sealing gasket.

[0010] The beneficial effects of adopting the above technical solution are:

[0011] The front air intake pipe and the middle air intake pipe are sealed by a sealing gasket, and the middle air intake pipe and the rear air intake pipe are sealed by a sealing gasket to enhance the sealing performance.

[0012] The angle between the central axis of the methanol nozzle mounting hole and the horizontal Y-axis is 0°, and the angle between the central axis of the gasoline nozzle mounting hole and the horizontal Y-axis is 30°. When the methanol nozzle and the gasoline nozzle are installed according to this angle, a better atomization injection effect can be achieved.

[0013] The three-cylinder air intake port and the four-cylinder air intake port are connected by a connecting air pipe, and the air intake is carried out through the middle of the three-cylinder air intake port or the four-cylinder air intake port. After the airflow enters from the main intake pipe, it rotates less in the main pipe and has fewer turning structures. At the same time, the three-cylinder air intake port, the four-cylinder air intake port and the connecting air pipe are in a hollow box shape, which increases the volume ratio and plays a role in maintaining pressure, making the intake smoother and more fluent. After calculation, the flow coefficient of each cylinder is maintained at about 0.4, and the swirl ratio is unified at about 1. The overall flow coefficient and swirl ratio are relatively the highest, and the intake uniformity is also significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2It is a main schematic diagram of the utility model;

[0016] Figure 3 It is a rear view schematic diagram of the utility model;

[0017] Figure 4 yes Figure 2 AA cross-sectional diagram of ;

[0018] Figure 5 This is a view of the inner cavity airway of the utility model.

[0019] The symbols in the figure correspond to: 1-front intake pipe, 11-intake port of cylinder 1, 12-intake port of cylinder 2, 2-middle intake pipe, 21-intake port of cylinder 3, 22-intake port of cylinder 4, 3-rear intake pipe, 31-intake port of cylinder 5, 32-intake port of cylinder 6, 4-sealing gasket, 5-manifold, 6-main intake pipe, 7-intake pipe flange, 8-methanol nozzle mounting hole, 81-methanol nozzle, 82-methanol rail, 83-methanol rail mounting seat, 9-gasoline nozzle mounting hole, 91-gasoline nozzle, 92-gasoline rail, 93-gasoline rail mounting seat. DETAILED DESCRIPTION

[0020] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, with the aim of helping technicians in the field to have a more complete, accurate and in-depth understanding of the concept and technical solution of the utility model and facilitating its implementation.

[0021] Specifically, Figure 1-Figure 5As shown, an intake pipe suitable for a methanol engine includes a front intake pipe 1, a middle intake pipe 2 and a rear intake pipe 3. The front intake pipe 1 and the middle intake pipe 2 are connected and sealed by a sealing gasket 4, and the middle intake pipe 2 and the rear intake pipe 3 are connected and sealed by a sealing gasket 4, which can enhance the sealing performance. The front intake pipe 1 is connected to the middle intake pipe 2, and the middle intake pipe 2 and the rear intake pipe 3 are connected. A first cylinder air intake port 11 and a second cylinder air intake port 12 are arranged on the front intake pipe 1, a third cylinder air intake port 21 and a fourth cylinder air intake port 22 are arranged on the middle intake pipe 2, a fifth cylinder air intake port 31 and a sixth cylinder air intake port 32 are arranged on the rear intake pipe 3, and a third cylinder air intake port 11 and a second cylinder air intake port 12 are arranged on the front intake pipe 1, a third cylinder air intake port 21 and a fourth cylinder air intake port 22 are arranged on the middle intake pipe 2, and a fifth cylinder air intake port 31 and a sixth cylinder air intake port 32 are arranged on the rear intake pipe 3. The air inlet 21 and the four-cylinder air inlet 22 are connected through the manifold 5. The three-cylinder air inlet 21, the four-cylinder air inlet 22 and the manifold 5 form a hollow box shape. A main air inlet pipe 6 is arranged below the middle air inlet pipe 2 and between the three-cylinder air inlet 21 and the four-cylinder air inlet 22. The main air inlet pipe 6 is connected to the air filter pipeline of the methanol engine. An air inlet flange 7 is arranged at the outlet of the first cylinder air inlet 11 to the sixth cylinder air inlet 32. An air inlet pipe suitable for a methanol engine is installed on the cylinder head of the methanol engine through the air inlet flange 7. From the first cylinder air inlet 11 to the sixth cylinder air inlet 32, each air inlet is correspondingly provided with a methanol nozzle mounting hole 8 and gasoline nozzle mounting hole 9, an air passage is formed between the front intake pipe 1, the middle intake pipe 2 and the rear intake pipe 3 and each intake port, the methanol nozzle mounting hole 8 and the gasoline nozzle mounting hole 9 are both mounted on the air passage on the back of the intake valve seat ring valve, the gasoline nozzle mounting hole 9 is located below the methanol nozzle mounting hole 8, the angle between the central axis of the methanol nozzle mounting hole 8 and the horizontal Y-axis is 0°, the angle between the central axis of the gasoline nozzle mounting hole 9 and the horizontal Y-axis is 30°, a methanol nozzle 81 is mounted in the methanol nozzle mounting hole 8, a gasoline nozzle 91 is mounted in the gasoline nozzle mounting hole 9, and the methanol nozzle 81 and the gasoline nozzle 91 are arranged according to this After being installed at a certain angle, a better atomization injection effect can be achieved. The gasoline nozzle 91 is mainly used when the engine is cold started. One end of the methanol nozzle 81 is installed in the methanol nozzle mounting hole 8, and the other end is installed on the methanol guide rail 82. One end of the gasoline nozzle 91 is installed in the gasoline nozzle mounting hole 9, and the other end is installed on the gasoline guide rail 92. A methanol guide rail mounting seat 83 and a gasoline guide rail mounting seat 93 are also provided on the airway on the back of the intake valve seat ring valve. The methanol guide rail 82 is detachably mounted on the methanol guide rail mounting seat 83 through a bracket, and the gasoline guide rail 92 is detachably mounted on the gasoline rail mounting seat 93 through a bracket.

[0022] The methanol engine has six cylinders with separate intake. After the air enters the main intake pipe 6, it is separately intaked through the first cylinder intake port 11 to the sixth cylinder intake port 3. The gas enters the cylinder head and the combustion chamber. When the three-cylinder intake port 21 and the four-cylinder intake port 2 are separately intaked, the three-cylinder intake port 21, the four-cylinder intake port 22 and the manifold 5 form a hollow box shape, which can increase the volume ratio and play a role in maintaining pressure. It is closest to the main intake pipe 6. After the air enters the main intake pipe 6, it rotates less in the manifold and has fewer turning structures, which can make the intake more stable and smooth. After calculation, the flow coefficient of each cylinder is maintained at about 0.4, and the swirl ratio is unified at about 1; the overall flow coefficient and swirl ratio are relatively the highest, and the intake uniformity is also the best.

[0023] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above-mentioned concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An intake pipe suitable for a methanol engine, characterized in that: The invention comprises a front air intake pipe (1), a middle air intake pipe (2) and a rear air intake pipe (3), wherein the front air intake pipe (1) is connected to the middle air intake pipe (2), the middle air intake pipe (2) is connected to the rear air intake pipe (3), the front air intake pipe (1) is connected to the middle air intake pipe (2), the middle air intake pipe (2) is connected to the rear air intake pipe (3), the front air intake pipe (1), the middle air intake pipe (2) and the rear air intake pipe (3) are each provided with at least two air inlets, and a main air intake pipe (6) is provided below the middle air intake pipe (2). The main intake pipe (6) is connected to the air filter pipeline of the methanol engine, and an intake pipe flange (7) is provided at the intake port. The intake pipe suitable for the methanol engine is installed on the cylinder head of the methanol engine through the intake pipe flange (7). A methanol nozzle mounting hole (8) and a gasoline nozzle mounting hole (9) are also provided on the intake pipe. A methanol nozzle (81) and a gasoline nozzle (91) are installed in the methanol nozzle mounting hole (8) and the gasoline nozzle mounting hole (9), respectively.

2. The intake pipe suitable for a methanol engine according to claim 1, characterized in that: The front air intake pipe (1) is provided with a first cylinder air intake port (11) and a second cylinder air intake port (12), the middle air intake pipe (2) is provided with a third cylinder air intake port (21) and a fourth cylinder air intake port (22), the rear air intake pipe (3) is provided with a fifth cylinder air intake port (31) and a sixth cylinder air intake port (32), the third cylinder air intake port (21) and the fourth cylinder air intake port (22) are connected via a manifold (5), and a hollow box shape is formed between the third cylinder air intake port (21), the fourth cylinder air intake port (22) and the manifold (5).

3. The intake pipe suitable for a methanol engine according to claim 2, characterized in that: Corresponding to the one-cylinder air intake port (11) to the six-cylinder air intake port (32), each air intake port is correspondingly provided with a methanol nozzle mounting hole (8) and a gasoline nozzle mounting hole (9); the methanol nozzle mounting hole (8) and the gasoline nozzle mounting hole (9) are both mounted on the air passage on the back of the intake valve seat ring; the gasoline nozzle mounting hole (9) is located below the methanol nozzle mounting hole (8); the angle between the central axis of the methanol nozzle mounting hole (8) and the horizontal Y axis is 0°; the angle between the central axis of the gasoline nozzle mounting hole (9) and the horizontal Y axis is 30°; a methanol nozzle (81) is mounted in the methanol nozzle mounting hole (8); and a gasoline nozzle (91) is mounted in the gasoline nozzle mounting hole (9).

4. The intake pipe suitable for a methanol engine according to claim 3, characterized in that: One end of the methanol nozzle (81) is mounted in the methanol nozzle mounting hole (8), and the other end is mounted on the methanol guide rail (82); one end of the gasoline nozzle (91) is mounted in the gasoline nozzle mounting hole (9), and the other end is mounted on the gasoline guide rail (92); a methanol guide rail mounting seat (83) and a gasoline guide rail mounting seat (93) are also provided on the air passage on the back of the intake valve seat ring; the methanol guide rail (82) is detachably mounted on the methanol guide rail mounting seat (83) via a bracket; and the gasoline guide rail (92) is detachably mounted on the gasoline guide rail mounting seat (93) via a bracket.

5. The intake pipe suitable for a methanol engine according to claim 1, characterized in that: The front air intake pipe (1) and the middle air intake pipe (2) are sealed by a sealing gasket (4), and the middle air intake pipe (2) and the rear air intake pipe (3) are sealed by a sealing gasket (4).

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