Fluid flow control device for internal combustion engine

Abstract

The present invention relates to a fluid flow control device for an internal combustion engine and, more specifically, comprises: a plurality of main blades having the inner ends thereof connected; and auxiliary blades, each obliquely extending rearward from the front end of a main blade (hereinafter, referred to as a first main blade) so as to be spaced farther apart from the first main blade toward the rear.

Description

Fluid flow control device for internal combustion engines

[0001] The present invention relates to a fluid flow control device for an internal combustion engine, and more particularly, to a device for controlling the flow of air used in an internal combustion engine.

[0002]

[0003] An internal combustion engine (ICE, IC engine) is an engine that obtains energy by combusting fuel and an oxidizer such as air in a combustion chamber (Patent Registration No. 10-0754573 (see Prior Art 1 below).

[0004] Internal combustion engines operate by generating high-temperature and high-pressure gases through the exothermic reaction of fuel and oxidizer in the combustion chamber, which moves the pistons and axles of the engine.

[0005] The operation of a four-stroke engine that uses gasoline as fuel, which can be considered a typical internal combustion engine, is in the order of intake-compression-explosion-exhaust.

[0006] Intake draws fuel and oxidizer (usually air) into the cylinder.

[0007] Compression: The mixture of fuel and oxidizer inside the cylinder is compressed by the piston.

[0008] An explosion occurs when a mixture of fuel and oxidizer is ignited by an electric discharge, causing a rapid exothermic reaction. The resulting gas expands, providing the power to move the engine.

[0009] The exhaust discharges the gas in which the reaction is completed outside the engine (see Patent No. 10-1625527 (hereinafter, Prior Art 2)).

[0010] As mentioned above, internal combustion engines require an oxidizer, such as air, to be drawn into the cylinder. However, conventional engines have faced problems such as fluid backflow through valve gaps during the process of entering the cylinder and oxidizing it, as well as reduced fluid intake efficiency.

[0011] In addition, the exhaust gas combusted inside the cylinder is discharged to the outside through the exhaust system, but there are problems such as backflow occurring due to exhaust resistance that hinders exhaust in the exhaust system, which reduces the efficiency of the exhaust system.

[0012]

[0013] The problem to be solved by the present invention is to suppress the backflow of fluid flowing into a cylinder and to improve the fluid suction efficiency.

[0014] Additionally, the purpose is to suppress the backflow of exhaust gas during the exhaust process by exhaust gas combusted in the cylinder and improve exhaust efficiency.

[0015] The tasks of the present invention are not limited to the tasks mentioned above, and other technical tasks not mentioned will be clearly understood by those skilled in the art from the description below.

[0016]

[0017] In order to achieve the above object, the present invention includes a plurality of main wings connected on the inner side and auxiliary wings extending rearward from the leading edge of the main wings and extending in an inclined manner so as to become farther away from the first main wing as they go rearward.

[0018] It may further include a control wall protruding from the main wing.

[0019] The above main wing includes a curved portion, and the curved portion may be a structure that secures the main wing to a pipe of an internal combustion engine.

[0020] It may further include a pipe surrounding the outer diameter of the plurality of main wings.

[0021] The tube may further include a body disposed between the inner ends of the plurality of main wings, and having the inner ends of each of the plurality of main wings connected to the outer circumferential surface.

[0022]

[0023] According to an embodiment of the present invention, there is provided an effect of suppressing reverse flow of fluid flowing in the intake direction in a cylinder of an internal combustion engine and improving fluid intake efficiency.

[0024] In addition, the exhaust gas combusted in the cylinder has the effect of suppressing the backflow of exhaust gas generated during the exhaust process and improving exhaust efficiency.

[0025]

[0026] Fig. 1 is a perspective view of a fluid flow control device for an internal combustion engine according to the first embodiment of the curved portion fixing method of the present invention.

[0027] Figure 2 is a front view and a back view of Figure 1, and a view of the internal combustion engine piping installation.

[0028] Figure 3 is a drawing for explaining the main wing and auxiliary wing pockets.

[0029] FIG. 4 is a rear conceptual diagram illustrating various embodiments of auxiliary blades and control wall end plates of a fluid flow control device for an internal combustion engine according to the first embodiment of the present invention.

[0030] FIG. 5 is a front view and a back view of a fluid flow control device for an internal combustion engine according to a second embodiment of the pipe fixing method structure of the present invention, and is a drawing for explaining the concept of installation in the piping of an internal combustion engine.

[0031] FIG. 6 is a rear conceptual diagram for explaining various embodiments of auxiliary blades and control walls of a fluid flow control device for an internal combustion engine according to a second embodiment of the present invention.

[0032] FIG. 7 is a front view and a back view of a fluid flow control device for an internal combustion engine according to a third embodiment of the present invention, a curved portion fixing method, and a drawing for explaining the concept of installation in the piping of an internal combustion engine.

[0033] FIG. 8 is a rear conceptual diagram illustrating various embodiments of auxiliary blades and control wall end plates of a fluid flow control device for an internal combustion engine according to a third embodiment of the present invention.

[0034] FIG. 9 is a front view and a back view of a fluid flow control device for an internal combustion engine according to the fourth embodiment of the pipe fixing method structure of the present invention, and is a drawing for explaining the concept of installation in the piping of the internal combustion engine.

[0035] FIG. 10 is a rear conceptual diagram illustrating various embodiments of auxiliary blades and control walls of a fluid flow control device for an internal combustion engine according to a fourth embodiment of the present invention.

[0036]

[0037] The advantages and features of the present invention, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms. These embodiments are provided solely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined solely by the scope of the claims.

[0038] Throughout this specification, when a part is said to be "connected" to another part, this includes not only cases where it is "directly connected" but also cases where it is "indirectly connected" with other elements in between.

[0039] Fig. 1 is a perspective view of a fluid flow control device for an internal combustion engine according to the first embodiment of the curved portion fixing method of the present invention.

[0040] Figure 2 is a front view and a back view of Figure 1, and a view of the internal combustion engine piping installation.

[0041] Figure 3 is a drawing for explaining the main wing and auxiliary wing pockets.

[0042] FIG. 4 is a rear conceptual diagram illustrating various embodiments of auxiliary blades and control wall end plates of a fluid flow control device for an internal combustion engine according to the first embodiment of the present invention.

[0043] FIG. 5 is a front view and a back view of a fluid flow control device for an internal combustion engine according to a second embodiment of the pipe fixing method structure of the present invention, and is a drawing for explaining the concept of installation in the piping of an internal combustion engine.

[0044] FIG. 6 is a rear conceptual diagram for explaining various embodiments of auxiliary blades and control walls of a fluid flow control device for an internal combustion engine according to a second embodiment of the present invention.

[0045] FIG. 7 is a front view and a back view of a fluid flow control device for an internal combustion engine according to a third embodiment of the present invention, a curved portion fixing method, and a drawing for explaining the concept of installation in the piping of an internal combustion engine.

[0046] FIG. 8 is a rear conceptual diagram illustrating various embodiments of auxiliary blades and control wall end plates of a fluid flow control device for an internal combustion engine according to a third embodiment of the present invention.

[0047] FIG. 9 is a front view and a back view of a fluid flow control device for an internal combustion engine according to the fourth embodiment of the pipe fixing method structure of the present invention, and is a drawing for explaining the concept of installation in the piping of the internal combustion engine.

[0048] FIG. 10 is a rear conceptual diagram illustrating various embodiments of auxiliary blades and control walls of a fluid flow control device for an internal combustion engine according to a fourth embodiment of the present invention.

[0049] The fluid flow control device (C) (fluid flow control device for an internal combustion engine) according to the present invention is used in an internal combustion engine to control the flow of fluid sucked into a cylinder of the internal combustion engine, suppress backflow to improve suction efficiency, and suppress backflow of exhaust gas generated during the exhaust process of exhaust gas combusted in the cylinder to improve exhaust efficiency. Hereinafter, for the convenience of explanation, it will be referred to as 'this device'.

[0050] For convenience of explanation, this device will be mainly described as being installed on the intake side of an internal combustion engine. However, this device may also be installed on an exhaust side that discharges gases combusted in a cylinder. In this case, this device may be arranged with its front facing the cylinder so that the shear line (21) described below is arranged on the cylinder side of the internal combustion engine. When this device is arranged on an exhaust side, it can improve exhaust efficiency in the exhaust side and, of course, suppress backflow in the exhaust side.

[0051] Referring to FIGS. 1 to 10, the present device (the present device according to the first to fourth embodiments) may include a plurality of main wings (1) and auxiliary wings (2).

[0052] The inner sides of the plurality of main wings (1) can be connected to each other. Here, the inner side means the direction toward the center when the device is viewed from the front or rear, and the outer side described below means the radial direction from the center side, and the same will be applied in the following description.

[0053] The above forward and backward directions are based on the direction of movement of the fluid moving through this device. The fluid in the forward direction (upstream, inlet) of this device passes through this device and moves to the rear (downstream, outlet), thereby moving toward the cylinder side of the internal combustion engine.

[0054] The rear may be in the 'A' direction based on Fig. 1, and may be in the right direction based on Fig. 3, and the front may be in the opposite direction, meaning the reverse direction of the 'A' direction based on Fig. 1, and may be in the left direction based on Fig. 3. The same shall apply in the following description.

[0055] For example, four main wings (1) may be provided, and when viewed from the front, the inner sides may be connected and arranged at a predetermined interval in a clockwise or counterclockwise direction. The number of main wings (1) is not limited and may vary.

[0056] The auxiliary wing (2) may extend rearward from the front end of the main wing (1) (first main wing (1a)), but may extend at an angle so as to move away from the first main wing (1a) as it goes rearward.

[0057] Here, the first main wing (1a) is connected to a shear line (21) of one of the auxiliary wings (2) among the plurality of main wings (1), and the second main wing (1b) described later may be adjacent to the first main wing (1a) (see Fig. 1).

[0058] That is, the main wing (1) to which the later-described shear line (21) of the auxiliary wing (2) is connected may be the first main wing (1a).

[0059] Auxiliary wings (2) may be provided in multiple numbers, extending rearward from the front end of each of the main wings (1).

[0060] The auxiliary wing (2) can be extended rearward at an angle so as to become farther away from the first main wing (1a) to which the front end is connected.

[0061] Accordingly, when the fluid disposed at the rear passes through this device and flows backwards to the front, it moves to the space (pocket (9)) between the main wing (1) (first main wing (1a)) and the auxiliary wing (2), and when it hits the front side of the pocket (9) and is reflected, it moves backwards again, thereby suppressing the fluid passing through this device from flowing backwards from the rear to the front.

[0062] Referring to Fig. 1, the auxiliary wing (2) may have a curved shape so that the outer end becomes closer to the second main wing (1b) adjacent to the first main wing (1a) as it goes from the front to the rear.

[0063] Referring to FIG. 1, the auxiliary wing (2) may include a shear line (21) connected to the main wing (1) (first main wing (1a)), an inner line (22) extending rearward from the inner end of the shear line (21), an outer line (23) extending rearward from the outer end of the shear line (21) and moving further away from the first main wing (1a) as it moves rearward and closer to the second main wing (1b) as it moves rearward, and a rear line (24) connecting the rear end of the inner line (22) and the rear end of the outer line (23).

[0064] The outer end of the above main wing (1) may refer to the outer line (23).

[0065] In this way, since the auxiliary wing (2) is curved so that the outer line (23) of the auxiliary wing (2) gets closer to the second main wing (1b) as it goes rearward, the device can improve the flow rate of the fluid by forming a vortex in the fluid moving from the front to the rear, thereby further improving the suction efficiency into the cylinder.

[0066] Referring to FIGS. 1 and 2, the rear end (24) according to one embodiment of the present device may include an extension portion (241) extending from the rear end of the inner end (22) toward the outer end (23), and a connection portion (242) extending from the outer end of the extension portion (241) toward the outer end (23), the outer end of which is connected to the outer end (23).

[0067] The above extension (241) may have various shapes, such as a straight shape or a curved shape.

[0068] The above connecting portion (242) may have a curved shape or a wave-shaped shape having a rib and ridge structure.

[0069] When the above connecting portion (242) has a wave shape, the fluid passing through the connecting portion can form a vortex and improve the flow velocity.

[0070] According to another embodiment of the present device, the rear line (24) may include only an extension portion (241) extending from the rear end of the inner line (22) toward the outer line (23) and having the outer end connected to the outer line (23).

[0071] For example, at least one of the plurality of auxiliary wings (2) may include a trailing edge (24) including the extension (241) and the connecting portion (242), and the rest may include a trailing edge (24) including only the extension (241) (see [c] in FIG. 4).

[0072] As another example, all of the auxiliary wings (2) may include a trailing edge (24) including an extension (241) and a connecting portion (242) (see [d] in FIG. 4).

[0073] The above connection part (242) may also be configured to improve fluid suction efficiency by forming a vortex when the fluid passing through the device moves backward.

[0074] FIGS. 1 to 4 illustrate a device according to a first embodiment of the present invention (hereinafter referred to as the first device (Case 1)), and FIGS. 5 and 6 illustrate a device according to a second embodiment of the present invention (hereinafter referred to as the second device (Case 2)). FIGS. 7 and 8 illustrate a device according to a third embodiment of the present invention (hereinafter referred to as the third device (Case 3)), and FIGS. 9 and 10 illustrate a device according to a fourth embodiment of the present invention (hereinafter referred to as the fourth device (Case 4)).

[0075] The first device is provided with a curved portion (4) described later in the first device, the third device includes a pipe body (8) described later in the first device, and the fourth device includes a pipe body (8) described later in the second device. However, the present invention is not limited thereto, and the first device may be formed in a form in which the curved portion (4) is not arranged, and may be formed in various structures such as a structure including a pipe body (8) in a state in which the curved portion (4) is not formed, a structure including a pipe (P) in a state in which the curved portion (4) is not formed, and a structure including a control wall (3) in a state in which the curved portion (4) is not formed.

[0076] In addition, it can be formed into various structures, such as a structure including a body (8) in a state where a curved portion (4) of the first device is formed, a structure including a pipe (P) in a state where a curved portion (4) is formed, and a structure including a control wall (3) in a state where a curved portion (4) is formed.

[0077] In this way, the control wall (3), the curved part (4), the body (8) or the pipe (P) can be formed as at least one of the main device having the main wing (1) and the auxiliary wing (2) as the basic structure.

[0078] In addition, the auxiliary wing (2) may be configured to be longer rearward than the main wing (1) in order to improve the fluid flow performance of the present invention.

[0079] The above first to fourth devices will be described in more detail in the description below.

[0080] Referring to FIGS. 1 to 10, the present device (the first to fourth devices) may include an adjusting wall (3) protruding from the main wing (1).

[0081] The above-mentioned control wall (3) may be provided to protrude from the surface of the main wing (1) (first main wing (1a)) facing the auxiliary wing (2) extended from the main wing (1) (first main wing (1a)).

[0082] The above-mentioned control wall (3) can play a role in controlling the movement of the reflux fluid flowing into the pocket (9) between the outer line (23) and the first main wing (1a) so that the reflux fluid moves rearward again.

[0083] Referring to FIGS. 1 and 7, the present device (the first device and the third device) may include a curved portion (4) extending outward from the outer end of the main wing (1) and curved to one side or the other. Here, the curved portion (4) may perform the function of fixing the present device to the piping of an internal combustion engine.

[0084] Here, one side may be clockwise when viewed from the front of the device, and the other side may be counterclockwise.

[0085] The above-mentioned curved portion (4) is configured to elastically deform when the device is initially inserted into the pipe of an internal combustion engine to reduce the outer diameter of the device, and after being inserted into the pipe of the internal combustion engine, it can elastically restore to allow the device to be fitted into the pipe of the internal combustion engine. In other words, the above-mentioned curved portion (4) may be configured to provide ease of installation of the device.

[0086] This device can be inserted into a pipe (P) and installed in the piping of an internal combustion engine. This device can be fixedly installed in the pipe (P) by, for example, welding or assembly.

[0087] The main wing (1) of this device is fixed and may include a pipe (P) that fixes this device to the piping of an internal combustion engine. The pipe (P) may be formed in a cylindrical shape surrounding the outer diameter of the main wing (1), but is not limited thereto. In addition, the pipe (P) may have a certain elastic restoring force, and this device may be inserted and fixed to the piping of the internal combustion engine while being inserted and fixed to the pipe (P).

[0088] Referring to FIGS. 1, 4 and 8, the auxiliary wing (2) may include a closing plate (5) extending from the outer line (23) of the auxiliary wing (2) toward the first main wing (1a).

[0089] Referring to FIGS. 1, 4 and 8, the auxiliary wing (2) may be configured such that the closing plate (5) controls the movement of the countercurrent fluid between the outer line (23) and the first main wing (1a) as if it were the control wall (3).

[0090] The closing plate (5) may be spaced apart from the first main wing (1a) as in [e] of Fig. 4, for example, and may be supported by having its end positioned on the first main wing (1a) as in [c] of Fig. 4, for example. When the end of the closing plate (5) is supported on the first main wing (1a), the end of the closing plate (5) may be fixed to the first main wing (1a) by various known methods.

[0091] When the above-mentioned closing plate (5) is supported on the first main wing (1a), the backflow of the fluid can be controlled more effectively, and at the same time, since the auxiliary wing (2) is supported on the first main wing (1a), the structural stability of the device can be further improved.

[0092] The present device (the first device and the third device) may include a through hole (6) formed in the closing plate (5).

[0093] For example, the inner line (22) of the present device may be connected to the second main wing (1b), and if the closing plate (5) is present, the load on the pocket (9) may increase due to the backflow fluid flowing into the pocket (9), which may reduce the durability of the present device. The through hole (6) may be configured to control the backflow fluid pressure of the pocket (9) to suppress overload of the pocket (9).

[0094] The device may include a through-hole (7) formed in at least one of the main wing (1) and the curved portion (4). The through-hole (7) may be formed in the main wing (1) or the curved portion (4), or may be formed in both the main wing (1) and the curved portion (4). Alternatively, the through-hole (7) may be formed across the main wing (1) and the curved portion (4) so ​​as to penetrate the boundary between the main wing (1) and the curved portion (4).

[0095] The above-mentioned through-hole (7) has an advantage in that, when at least a part of it is formed in the above-mentioned curved portion (4), the above-mentioned curved portion (4) can be easily bent and elastically deformed, so that the device can be inserted and installed into the pipe of an internal combustion engine with less force applied to the device.

[0096] Referring to FIGS. 7 to 10, the present device (the third device and the fourth device) may include a tube (8) disposed between the inner ends of a plurality of main wings (1), and having the inner ends of each of the plurality of main wings (1) connected to the outer circumference thereof.

[0097] The above-mentioned body (8) may have a length in the front-back direction, and may have a hollow space formed through the front and rear along the length direction.

[0098] When viewed from the front, a plurality of main wings (1) can be arranged at intervals along the circumference of the body (8).

[0099] The above-mentioned body (8) may be configured to suppress overload of the pocket (9), and in addition, when an external force is applied to the main wing (1), the body (8) having a circular cross-section may be elastically deformed to have an elliptical cross-section and absorb the external force, thereby suppressing the main wing (1) from bending or breaking.

[0100] Additional embodiments of the present invention will be described below.

[0101] Referring to Fig. 1, each of the through holes (6) and the through portions (7) can be arranged in multiple positions at intervals along the front-rear direction.

[0102] At this time, the closing plate (5) may include a first slit (thin hole) surrounding the through hole (6).

[0103] At this time, the device may include a cover part including a plate covering the through hole (6) and a fitting part protruding from the plate to be inserted into and fitted into the first slit.

[0104] The above cover portions may also be provided in multiple numbers to cover multiple through holes (6). The multiple cover portions may be separated from the end plate (5) to open the entire through hole (6), or the multiple cover portions may be fitted to the end plate (5) to cover all of the multiple through holes (6). Alternatively, some of the multiple cover portions may be fitted to the end plate (5) to close only some of the multiple through holes (6).

[0105] The cover part is configured to open and close the through hole (6) to control the amount of reflux fluid flowing into the pocket (9) and flowing out through the multiple through holes (6). The configuration is configured to open the through hole (6) when the load on the pocket (9) is deemed to be large, and to close the through hole (6) when it is not.

[0106] Meanwhile, the above-mentioned through-hole (7) may be formed in the curved portion (4). At this time, the curved portion (4) may include a second slit (thin hole) surrounding the above-mentioned through-hole (7).

[0107] At this time, the device may include a cover part including a flat part covering the above-mentioned opening (7) and an insertion protrusion protruding from the flat part to be inserted into and fitted into the second slit.

[0108] At this time, the cover part may be made of a softer material than the curved part (4). For example, the curved part (4) may be made of a metal material and the cover part may be made of a resin material.

[0109] The above-mentioned openings (7) may be provided in multiple numbers, and accordingly, the above-mentioned cover parts may also be provided in multiple numbers, and at times, the multiple cover parts may block all of the multiple openings (7), block only some of them, or open all of them.

[0110] For example, if the difference between the outer diameter of this device and the inner diameter of the pipe of the internal combustion engine is not large and the bending part (4) is installed in the pipe of the internal combustion engine without being bent, the cover part can block the opening (7) and prevent fluid from flowing through the opening (7).

[0111] When the inner diameter of the pipe of the internal combustion engine becomes smaller than the outer diameter of the device, as described above, the curved portion (4) is elastically deformed, and the cover portion is fitted into the curved portion (4) to control the degree of elastic deformation of the curved portion (4).

[0112] For example, when the curved part (4) needs to be bent a lot, the amount of cover part used can be minimized, and when the curved part (4) can be bent less, the amount of cover part used can be maximized.

[0113] Meanwhile, the inner surface of the pipe body (8) may be provided with a female screw thread, and the device may further include an insertion part that is inserted into the inside of the pipe body (8) through the front opening of the pipe body and placed on the inner front side of the pipe body (8), and a blocking part that includes a male screw thread that is provided on the outer surface of the insertion part and is screw-connected to the female screw thread.

[0114] The above-mentioned blocking member has the advantage of forming a collecting space for collecting the reflux fluid together with the pipe (8), thereby restricting the reflux fluid from moving forward.

[0115] Although embodiments of the present invention have been described with reference to the attached drawings, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without altering the technical spirit or essential characteristics of the present invention. Therefore, the embodiments described above should be understood to be illustrative in all respects and not restrictive.

Claims

1. A plurality of main wings connected on the inside; and A fluid flow control device for an internal combustion engine, characterized in that it includes an auxiliary wing extending rearward from the leading edge of the main wing and extending in an inclined manner so as to be further away from the main wing as it goes rearward.

2. In claim 1, A fluid flow control device for an internal combustion engine, characterized in that it further includes a control wall protruding from the main wing.

3. In claim 1 or 2, The above main wing includes a curved portion, The above-mentioned curved portion is a fluid flow control device of an internal combustion engine, which is a structure that fixes the main blade to the pipe of the internal combustion engine.

4. In claim 1 or 2, A fluid flow control device for an internal combustion engine, characterized in that it further includes a pipe surrounding the outer diameter of the plurality of main wings.

5. In claim 1 or 2, A fluid flow control device for an internal combustion engine, characterized in that it further includes a tube disposed between the inner ends of the plurality of main wings, and having an outer surface to which the inner ends of each of the plurality of main wings are connected.

6. In claim 3, A fluid flow control device for an internal combustion engine, characterized in that it further includes a tube disposed between the inner ends of the plurality of main wings, and having an outer surface to which the inner ends of each of the plurality of main wings are connected.

7. In claim 4, A fluid flow control device for an internal combustion engine, characterized in that it further includes a tube disposed between the inner ends of the plurality of main wings, and having an outer surface to which the inner ends of each of the plurality of main wings are connected.

Images