An engine intake manifold

Abstract

This invention provides an engine intake manifold, relating to the technical field of engine intake systems. It includes an intake pipe with an intake port on its side wall, and six branch pipes connected through its lower end face. Each branch pipe has a base on its lower end face. The manifold also includes a ventilation mechanism comprising a circular shell containing multiple sets of spacers. Each spacer has sliders on both side walls, and slots on both inner side walls of the circular shell. The sliders are slidably connected to these slots, and the spacers are in close contact with the inner side walls of the circular shell. This engine intake manifold, through its ventilation mechanism design, effectively utilizes the kinetic energy of the gas during intake, avoiding energy waste in traditional intake systems.

Description

Technical Field

[0001] This invention relates to the field of engine intake system technology, and more specifically, to an engine intake manifold. Background Technology

[0002] As the core power unit of internal combustion engines, the engine's working principle is based on the classic four-stroke cycle, namely the intake stroke, compression stroke, power stroke, and exhaust stroke. During the intake stroke, the piston moves from top dead center to bottom dead center, the cylinder volume increases to create negative pressure, the intake valve opens, and fresh air or combustible mixture is drawn into the cylinder through the intake system, providing the necessary working fluid for subsequent compression ignition and detonation. The intake system, as an important component of the engine, includes key components such as the air filter, intake manifold, and throttle body. Among them, the intake manifold plays an important role in evenly distributing filtered air to each cylinder, directly affecting the engine's charging efficiency and power output. The traditional engine intake process relies on the pressure difference generated by the piston movement to drive air flow, and the opening and closing timing of the intake valve is controlled by the camshaft to ensure that the intake process is completed at the appropriate time. However, this mechanical intake control method has obvious shortcomings and room for improvement in the utilization of gas kinetic energy.

[0003] Existing engine intake systems commonly suffer from wasted gas kinetic energy. This energy loss primarily stems from the sudden interruption of gas flow during intake and the flawed design of the kinetic energy conversion mechanism. When the engine is in the intake stroke, air flows at high speed through the intake manifold towards the cylinder under the pressure difference, forming an airflow with considerable kinetic energy. However, when the piston approaches bottom dead center and the intake valve suddenly closes, this high-speed gas flow is forced to decelerate sharply or even stop completely. The valuable kinetic energy cannot be effectively utilized. The sudden obstruction of the gas leads to severe flow disturbances and turbulence. The high-speed airflow experiences intense friction with solid surfaces such as the intake manifold wall and valve seats, converting kinetic energy into heat energy. This conversion process from kinetic energy to heat energy is an irreversible entropy increase process. The converted heat energy cannot be effectively converted back into mechanical work and can only be carried away by the cooling system or dissipated into the environment, resulting in energy waste. Summary of the Invention

[0004] (a) Technical problems to be solved In view of the problems existing in the prior art, the present invention provides an engine intake manifold to solve the technical problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: An engine intake manifold includes an intake pipe with an intake port on its side wall, six branch pipes connected through the lower end face of the intake pipe, and a base on the lower end face of each branch pipe; it also includes a ventilation mechanism, which includes a circular shell with multiple sets of partition plates inside the shell. Each partition plate has a slider on both side walls, and slots are formed on both inner side walls of the circular shell. The sliders are slidably connected to the slots and are embedded in them. The partition plates are in close contact with the inner side walls of the circular shell.

[0006] Preferably, a first flow pipe is connected through the side wall of the circular shell, and the other end of the first flow pipe is connected through the branch pipe. Two sets of first limiting rings are provided in the first flow pipe, and a first sliding rod is slidably connected in the first limiting ring. The through connection design of the first flow pipe realizes the controllable flow between the gas in the circular shell and the branch pipe, and provides a dedicated channel for the effective recovery and reuse of gas kinetic energy.

[0007] Preferably, the inner wall of the first flow tube is provided with a first sealing plate, and a first sealing disc is sleeved on the first slide rod. The first sealing disc and the first sealing plate are in sealing contact. A first top spring is sleeved on the outer surface of the first slide rod. One end of the first top spring is fixedly connected to the upper end face of the first sealing disc, and the other end is fixedly connected to the lower end face of the upper first limiting ring. The sealing contact between the first sealing disc and the first sealing plate forms an effective airtight chamber. The elastic recovery characteristic of the first top spring provides an automatic reset function for the first slide rod. When the gas pressure disappears, the first top spring can quickly push the slide rod back to the initial position, ready for the next energy recovery cycle.

[0008] Preferably, a second flow pipe is connected through the other side wall of the circular shell, and the other end of the second flow pipe is connected through another set of branch pipes. Two sets of second limiting rings are provided in the second flow pipe, and a second sliding rod is slidably connected in the second limiting ring. The airflow flowing into the first flow pipe finally flows into the other set of branch pipes through the second flow pipe, realizing the reuse of gas energy.

[0009] Preferably, the inner wall of the second flow pipe is provided with a second sealing plate, the second slide rod is fitted with a second sealing disc, the second sealing disc is sealed to the second sealing plate, and the outer surface of the second slide rod is fitted with a second top spring. One end of the second top spring is fixedly connected to the upper end face of the second sealing disc, and the other end is fixedly connected to the lower end face of the upper second limiting ring. The coordinated operation of the double-sided sealing system provides reliable airtightness for the entire device and prevents leakage of internal working gas.

[0010] Preferably, an eccentric disk is rotatably connected inside the circular shell. The eccentric disk has multiple sets of sliding grooves adapted to the partition plate. The partition plate is embedded in the sliding groove and slidably connected to the eccentric disk. The rotatable connection design of the eccentric disk realizes the smooth transmission of rotational motion and provides an adjustable motion conversion mechanism for the entire energy recovery system. The multiple sets of sliding grooves provide motion guidance for the partition plate, ensuring that the partition plate can move regularly along a predetermined trajectory.

[0011] Preferably, the eccentric disk has two sets of follower disks on both sides, and the sidewalls of the follower disks have multiple sets of grooves. The symmetrical arrangement of the two sets of follower disks realizes the balanced support and stable transmission of the eccentric disk's movement, effectively reducing the vibration and swaying phenomenon during the operation of the eccentric disk. The multiple sets of grooves provide a basis for multi-point contact and force dispersion for subsequent transmission connections, enhancing the load-bearing capacity and reliability of the transmission system.

[0012] Preferably, the two side walls of the circular shell are provided with multiple sets of connecting rods, and the other end of the connecting rod is connected to a ring. The inner side wall of the ring is provided with multiple sets of limiting rods. The distribution of multiple sets of connecting rods realizes the rigid connection and positioning between the circular shell and the ring, ensuring the relative positional stability between the two key components.

[0013] Preferably, a sliding sleeve is slidably connected to the limiting rod, and a compression spring is provided on the side wall of the sliding sleeve. The other end of the compression spring is fixedly connected to the inner side wall of the ring. The sliding connection of the sliding sleeve on the limiting rod realizes the smooth transmission of radial movement and provides a key intermediate link for the conversion of the follower disc movement to the peripheral transmission. The side wall of the compression spring is set as the sliding sleeve to provide radial preload and elastic recovery function, while realizing the storage and release of energy.

[0014] Preferably, a rotating roller is rotatably connected inside the sliding sleeve, and the rotating roller abuts against the follower disk. When the follower disk rotates, the rotating roller accurately transmits the rotational motion of the follower disk to the radial motion of the sliding sleeve.

[0015] (III) Beneficial Effects Compared with the prior art, the present invention provides an engine intake manifold with the following advantages: This engine intake manifold, through the design of the air exchange mechanism, realizes the effective utilization of gas kinetic energy during the intake process, avoiding energy waste in the traditional intake system. The air exchange mechanism forms multiple gas storage cells by tightly abutting against the inner wall of the circular shell through multiple sets of partition plates. These storage cells have different volumes and can store and release gas kinetic energy at different intake stages.

[0016] When the high-speed airflow in one set of branch pipes is obstructed as the piston approaches its bottom dead center, the airflow pushes the partition plate to rotate, thus converting the gas kinetic energy into the mechanical energy of the partition plate. This mechanical energy is transferred to the eccentric plate through the sliding connection between the partition plate and the eccentric disk, causing the eccentric disk and the follower disk to rotate synchronously. The rotation of the follower disk drives the roller in contact with it, causing the roller to slide in the groove, thereby compressing the compression spring and storing energy. When air enters another set of branch pipes, the stored energy is released through the rebound of the compression spring, pushing the partition plate to continue rotating, causing the eccentric disk and the follower disk to rotate synchronously as well. This converts the stored gas kinetic energy into the power to propel the airflow, allowing the airflow to smoothly enter the other set of branch pipes and complete the air intake process.

[0017] This design not only prevents the kinetic energy of the gas from being converted into useless heat energy due to airflow obstruction, but also enables the reuse of this energy, improving intake efficiency and reducing energy loss, thereby enhancing the overall performance and fuel economy of the engine. In short, this engine intake manifold, through its air exchange mechanism design, achieves effective utilization and reuse of the kinetic energy of the gas during the intake process, improving intake efficiency, reducing energy loss, and thus enhancing engine performance and fuel economy. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an engine intake manifold according to the present invention; Figure 2 This is a schematic diagram of the structure of the base and the air intake pipe in this invention; Figure 3 This is a schematic diagram of the ventilation mechanism in this invention; Figure 4 In this invention Figure 3 A schematic diagram of the cross-sectional structure; Figure 5 This is a schematic diagram of the structure of the circular shell and the spacer plate in this invention; Figure 6 This is a cross-sectional view of the eccentric disk in this invention. Figure 7 This is a schematic diagram of the structure of the ring and connecting rod in this invention; Figure 8 In this invention Figure 3 A schematic diagram of the exploded structure; Figure 9 This is a cross-sectional view of the first flow tube and the first slide bar in this invention; Figure 10 This is a cross-sectional view of the second flow pipe and the second slide bar in this invention.

[0019] In the diagram: 11. Inlet pipe; 12. Inlet port; 13. Branch pipe; 14. Base; 21. Round shell; 22. Spacer plate; 23. Slider; 24. Slot; 25. First flow pipe; 26. First limiting ring; 27. First slide rod; 28. First sealing plate; 29. ​​First sealing disc; 210. First top spring; 211. Second flow pipe; 212. Second limiting ring; 213. Second slide rod; 214. Second sealing plate; 215. Second sealing disc; 216. Second top spring; 217. Eccentric disc; 218. Slide groove; 219. Follower disc; 220. Groove; 221. Connecting rod; 222. Ring; 223. Limiting rod; 224. Sliding sleeve; 225. Compression spring; 226. Rotating roller. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0022] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0023] Please see Figures 1-10An engine intake manifold includes an intake pipe 11 with an intake port 12 on its side wall. Six branch pipes 13 are connected to the lower end of the intake pipe 11, and a base 14 is provided on the lower end of each branch pipe 13. The manifold also includes a ventilation mechanism, comprising a circular shell 21 with multiple partition plates 22 inside. Each partition plate 22 has a slider 23 on both side walls. Each inner side wall of the circular shell 21 has a slot 24, into which the slider 23 is slidably connected. The partition plates 22 are tightly abutted against the inner side wall of the circular shell 21. A first flow pipe 25 is connected to the side wall of the circular shell 21, and the other end of the first flow pipe 25 is connected to the branch pipes 12. 3. A through connection is provided: two sets of first limiting rings 26 are provided inside the first flow pipe 25; a first sliding rod 27 is slidably connected inside the first limiting ring 26; a first sealing plate 28 is provided on the inner side wall of the first flow pipe 25; a first sealing disc 29 is sleeved on the first sliding rod 27; the first sealing disc 29 and the first sealing plate 28 are sealed and abutted; a first top spring 210 is sleeved on the outer surface of the first sliding rod 27; one end of the first top spring 210 is fixedly connected to the upper end face of the first sealing disc 29; the other end is fixedly connected to the lower end face of the upper first limiting ring 26; a second flow pipe 211 is provided through the other side wall of the circular shell 21; the other end of the second flow pipe 211 is connected to another set of branch pipes 13. The second flow pipe 211 is connected to a second set of second limiting rings 212. A second sliding rod 213 is slidably connected within each second limiting ring 212. A second sealing plate 214 is provided on the inner wall of the second flow pipe 211. A second sealing disc 215 is fitted onto the second sliding rod 213, and the second sealing disc 215 is sealed to the second sealing plate 214. A second top spring 216 is fitted onto the outer surface of the second sliding rod 213. One end of the second top spring 216 is fixedly connected to the upper end face of the second sealing disc 215, and the other end is fixedly connected to the lower end face of the upper second limiting ring 212. An eccentric disc 217 is rotatably connected inside the circular shell 21. Multiple sets of partition plates 213 are provided inside the eccentric disc 217. 2. A matching slide groove 218 is provided. The partition plate 22 is embedded in the slide groove 218 and slidably connected to the eccentric disk 217. Two sets of follower disks 219 are provided on both sides of the eccentric disk 217. Multiple sets of grooves 220 are opened on the side wall of the follower disk 219. Multiple sets of connecting rods 221 are provided on both side walls of the circular shell 21. The other end of the connecting rod 221 is connected to a ring 222. Multiple sets of limiting rods 223 are provided on the inner side wall of the ring 222. A sliding sleeve 224 is slidably connected on the limiting rod 223. A compression spring 225 is provided on the side wall of the sliding sleeve 224. The other end of the compression spring 225 is fixedly connected to the inner side wall of the ring 222. A rotating roller 226 is rotatably connected inside the sliding sleeve 224. The rotating roller 226 abuts against the follower disk 219.

[0024] In this invention, the base 14 is connected to the engine. The pressure difference generated by the piston movement in the engine drives the gas to enter the intake pipe 11 through the intake port 12, and then flows at high speed to the lower cylinder through multiple sets of branch pipes 13. The high-speed gas flow generates kinetic energy, but when the piston approaches the bottom dead center and the intake valve is suddenly closed, the airflow is obstructed and can no longer continue to flow. The gas will have strong friction with the surface of the branch pipe 13, valve seat and other solid surfaces, converting the kinetic energy into heat energy, resulting in energy waste. At this time, the airflow with kinetic energy can be guided into other branch pipes 13 that need air intake through the air exchange mechanism to avoid energy waste. The gas in the first flow pipe 25 and the second flow pipe 211 can only flow in one direction. The gas in the first flow pipe 25 can only flow into the round shell 21 from the branch pipe 13, and the gas in the second flow pipe 211 can only flow into another set of branch pipes 13 that need air intake from the round shell 21. It cannot flow in the opposite direction. The drawings are schematic diagrams. The first flow pipe 25 and the second flow pipe 211 of the ventilation mechanism are connected to two adjacent sets of branch pipes 13. In actual practice, the two adjacent sets of branch pipes 13 are not necessarily connected; the connection can be made according to the actual situation. For example, if the high-speed airflow in one set of branch pipes 13 is obstructed, the high-speed airflow will push open the first sealing disc 29, the first slide rod 27 will slide along the first limiting ring 26, the first top spring 210 will be compressed, thereby releasing the sealing state between the first sealing disc 29 and the first sealing plate 28. Gas flows into the first flow pipe 25, and then into the circular shell 21. The first top spring 210 rebounds, pushing the first slide rod 27 to move the first sealing disc 29 so that the first sealing disc 29 re-seales against the first sealing plate 28. The eccentric disk 217 and the round shell 21 cooperate to form multiple sets of gas storage cells with different volumes. The gas pushes the partition plate 22 to rotate. The partition plate 22 slides along the slot 24 and slides in the slide groove 218. The gas enters the first cell. At this time, the gas in the end cell is pushed into the second flow pipe 211. The second sealing disk 215 in the second flow pipe 211 is compressed and releases the sealing connection with the second sealing plate 214. The second slide rod 213 slides along the second limiting ring 212. The second top spring 216 is compressed. The gas flows through the second flow pipe 211 into another set of branch pipes 13 that need to be filled with gas. The second top spring 216 rebounds and drives the second slide rod 213 and the second sealing disk 215 to move so that the second sealing disk 215 can seal against the second sealing plate 214 again. As the gas flows within the circular shell 21, the partition plate 22 rotates along the slot 24, causing the eccentric disk 217 to rotate synchronously. The eccentric disk 217 then drives the two follower disks 219 to rotate synchronously. When the follower disks 219 are not rotating, the roller 226 is embedded in the groove 220 on the surface of the follower disk 219, and the compression spring 225 is compressed. When the follower disks 219 rotate with the eccentric disk 217, they will push the roller 226 out of the groove 220. When the roller 226 abuts against the highest point of the outer wall of the follower disk 219, the roller 226 pushes the sliding sleeve 224 to slide along the limiting rod 223, and the compression spring 225 is compressed to its maximum, storing energy. The gas within the circular shell 21 pushes the partition plate 22 to rotate one notch, and the outer roller 226 also rotates one notch. When the roller 226 rotates into the next groove 220, the compression spring 225 rebounds to its initial compressed state, and the energy is released. The position of the compression spring 225 does not change, so the compression spring 225 only stores energy before releasing it. When the gas moves in multiple gas storage cells of different volumes, it will be compressed or expanded. The eccentric disk 217 and the follower disk 219 are set to ensure that the eccentric disk 217 does not rotate continuously. Instead, it rotates one cell at a time after the gas enters. If it is set as a coaxial turntable, the turntable will rotate continuously. However, the gas is also received intermittently by the branch pipe 13 on the other side. Therefore, the kinetic energy of the gas needs to be stored before it is released, which can avoid the waste of the kinetic energy of the obstructed gas.

[0025] In all the solutions mentioned above, for connections between two components, welding, bolt and nut connection, bolt or screw connection, or other known connection methods can be selected according to the actual situation. These will not be elaborated here. For all fixed connections mentioned above, welding is preferred. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise specified, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, and their electrical connection relationships and specific circuit structures will not be elaborated here. Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing well-known technologies, and will not be elaborated upon in this invention. Of all the solutions mentioned above, those involving the connection between solar panels and batteries can be equipped with essential accessories such as inverters, battery charging controllers, cables, fuses, and brackets. Their control principles and circuit connections are all existing, well-known, and mature technologies, so their electrical connection relationships and specific circuit structures will not be elaborated here.

Claims

1. An engine intake manifold, comprising an intake pipe (11), characterized in that: The air intake pipe (11) has an air inlet (12) on its side wall. The lower end face of the air intake pipe (11) is connected to six sets of branch pipes (13). The lower end face of the branch pipes (13) is provided with a base (14). The air exchange mechanism also includes a circular shell (21). The circular shell (21) is provided with multiple sets of partition plates (22). The partition plates (22) are provided with sliders (23) on both sides of the partition plates (22). The inner side walls of the circular shell (21) are provided with slots (24). The sliders (23) are embedded in the slots (24) and are slidably connected to the slots (24). The partition plates (22) are in close contact with the inner side walls of the circular shell (21).

2. An engine intake manifold according to claim 1, characterized in that: The side wall of the round shell (21) is connected to a first flow pipe (25), and the other end of the first flow pipe (25) is connected to a branch pipe (13). The first flow pipe (25) is provided with two sets of first limiting rings (26), and a first slide rod (27) is slidably connected inside the first limiting ring (26).

3. An engine intake manifold according to claim 2, characterized in that: The inner wall of the first flow tube (25) is provided with a first sealing plate (28), and the first sliding rod (27) is fitted with a first sealing disc (29). The first sealing disc (29) and the first sealing plate (28) are sealed and abutted together. The outer surface of the first sliding rod (27) is fitted with a first top spring (210). One end of the first top spring (210) is fixedly connected to the upper end face of the first sealing disc (29), and the other end is fixedly connected to the lower end face of the upper first limiting ring (26).

4. An engine intake manifold according to claim 3, characterized in that: The other side wall of the round shell (21) is connected to a second flow pipe (211), and the other end of the second flow pipe (211) is connected to another set of branch pipes (13). The second flow pipe (211) is provided with two sets of second limiting rings (212), and a second slide rod (213) is slidably connected in the second limiting ring (212).

5. An engine intake manifold according to claim 4, characterized in that: The inner wall of the second flow tube (211) is provided with a second sealing plate (214), and a second sealing disc (215) is sleeved on the second slide rod (213). The second sealing disc (215) is sealed to the second sealing plate (214). A second top spring (216) is sleeved on the outer surface of the second slide rod (213). One end of the second top spring (216) is fixedly connected to the upper end face of the second sealing disc (215), and the other end is fixedly connected to the lower end face of the upper second limiting ring (212).

6. An engine intake manifold according to claim 5, characterized in that: An eccentric disk (217) is rotatably connected inside the circular shell (21). Multiple sets of sliding grooves (218) adapted to the partition plate (22) are opened inside the eccentric disk (217). The partition plate (22) is embedded in the sliding groove (218) and slidably connected to the eccentric disk (217).

7. An engine intake manifold according to claim 6, characterized in that: The eccentric disk (217) has two sets of follower disks (219) on both sides, and the side wall of the follower disk (219) has multiple sets of grooves (220).

8. An engine intake manifold according to claim 7, characterized in that: The two side walls of the circular shell (21) are provided with multiple sets of connecting rods (221), and the other end of the connecting rod (221) is connected to a ring (222). The inner side wall of the ring (222) is provided with multiple sets of limiting rods (223).

9. An engine intake manifold according to claim 8, characterized in that: A sliding sleeve (224) is slidably connected to the limiting rod (223). A compression spring (225) is provided on the side wall of the sliding sleeve (224). The other end of the compression spring (225) is fixedly connected to the inner side wall of the ring (222).

10. An engine intake manifold according to claim 9, characterized in that: A rotating roller (226) is rotatably connected inside the sliding sleeve (224), and the rotating roller (226) abuts against the follower disk (219).

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