Air inlet throttle valve and engine

Abstract

The air inlet throttle valve comprises a valve plate and a valve body, the valve body is provided with an air flow channel, the valve plate is installed in the air flow channel, one end, connected with an air inlet connecting pipe, of the air flow channel is provided with a protection portion, and the free end of the protection portion protrudes in the direction away from the air flow channel. And an anti-clamping wall surface which is isolated from the valve plate and is used for the valve plate to freely rotate is formed on the inner wall of the protection part. When the air inlet throttling valve needs to be used, the end, provided with the protection part, of the valve body is connected with an air inlet connecting pipe, and the air inlet amount is adjusted through rotation of the valve plate. According to the air inlet throttling valve, the protection part is arranged at the end, connected with the air inlet connecting pipe, of the valve body, the protection part protrudes out of the valve body, the situation that the air inlet connecting pipe interferes with rotation of the valve plate is avoided, and then the situation that the valve plate is clamped is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of valve regulation, in particular to an air intake throttle valve.

[0002] The utility model also relates to an engine comprising the air intake throttle valve. Background Art

[0003] The intake throttle valve is a butterfly valve whose opening is controlled by the engine ECU and is usually installed in the engine intake pipe. When the engine load increases, the intake throttle valve opening is increased to meet the demand for more air and fuel. When the engine load decreases or during the warm-up phase, the intake throttle valve opening needs to be controlled to decrease to reduce the demand for air and fuel.

[0004] like Figures 1 to 5 As shown, the air intake system of the engine is provided with an air intake pipe 03, a valve body 02, an air intake throttle valve motor 04 and a valve plate 01, and the valve plate 01 is installed in the gas flow channel 021 of the valve body 02. The air intake throttle valve motor 04 receives the control signal of the engine ECU and controls the valve plate 01 to rotate, so as to change the flow area of ​​the gas flow channel 021, thereby achieving the purpose of changing the intake flow rate and intake pressure.

[0005] During assembly, the valve body 02 is connected to the air intake pipe 03. Figure 3 and Figure 4 As shown, due to the size tolerance of the mounting hole position of the intake throttle valve, there is a problem of offset installation of the intake throttle valve. When the interface size of the intake pipe 03 is not designed with enough avoidance space, there is a risk of the valve plate 01 getting stuck.

[0006] Therefore, how to reduce the stuck condition of valve plate is a technical problem to be solved urgently by those skilled in the art. Utility Model Content

[0007] The utility model aims to provide an air intake throttle valve to reduce the situation of valve plate sticking. Another purpose of the utility model is to provide an engine including the air intake throttle valve.

[0008] The intake throttle valve provided in the present application includes a valve plate and a valve body, the valve body is provided with a gas flow channel, the valve plate is installed in the gas flow channel, and a protective part is provided at one end of the gas flow channel connected to the intake pipe, the free end of the protective part protrudes away from the gas flow channel, and the inner wall of the protective part forms an anti-stuck wall surface isolated from the valve plate to allow the valve plate to rotate freely.

[0009] Optionally, in the above-mentioned intake throttle valve, the inner diameter of the anti-stuck wall surface is the same as the inner diameter of the gas flow channel, and the center of the anti-stuck wall surface and the center of the gas flow channel are both located on the center line of the gas flow channel.

[0010] Optionally, in the above-mentioned intake throttle valve, the protection part includes:

[0011] A first protection part, wherein the first protection part is an arc-shaped plate body arranged along the circumference of the gas flow channel;

[0012] The second protection part is an arc-shaped plate body arranged along the circumference of the gas flow channel, and the protection part protrudes from the valve body. The extension length of the first protection part is different from the extension length of the second protection part.

[0013] Optionally, in the above-mentioned intake throttle valve, the extension length of the protective part is not less than 3 mm, the extension length of the second protective part is greater than the extension length of the first protective part, and the difference between the extension length of the second protective part and the extension length of the protective part is greater than or equal to 5 mm.

[0014] Optionally, in the above-mentioned intake throttle valve, in the circumferential direction of the gas flow channel, two ends of the first protective part are connected with two ends of the second protective part.

[0015] Optionally, in the above-mentioned intake throttle valve, the first guard portion and the second guard portion are both semicircular ring plate structures.

[0016] Optionally, in the above-mentioned intake throttle valve, the rotation axis of the valve plate is arranged parallel to the line connecting the connection positions of the first guard part and the second guard part.

[0017] Optionally, in the above-mentioned air intake throttle valve, the valve body and the protective part are an integrally formed structure.

[0018] An engine comprises an intake pipe and an intake throttle valve connected to the intake pipe, wherein the intake throttle valve is any one of the intake throttle valves described above.

[0019] Optionally, in the above-mentioned engine, the air intake pipe is provided with an air intake passage, and the end of the air intake passage is concave to form an anti-mistake installation groove adapted to the protective part.

[0020] In the above technical scheme, the air intake throttle valve provided by the utility model includes a valve plate and a valve body, the valve body is provided with a gas flow channel, the valve plate is installed in the gas flow channel, one end of the gas flow channel connected to the air intake pipe is provided with a protective part, the free end of the protective part protrudes away from the gas flow channel, and the inner wall of the protective part forms an anti-jamming wall surface which is isolated from the valve plate and allows the valve plate to rotate freely. When the air intake throttle valve is needed, the end of the valve body provided with the protective part is connected to the air intake pipe, and the air intake amount is adjusted by rotating the valve plate.

[0021] From the above description, it can be seen that in the intake throttle valve provided in the present application, a protective part is provided on one end of the valve body connected to the intake pipe, and the protective part protrudes from the valve body to prevent the intake pipe from interfering with the rotation of the valve plate, thereby reducing the possibility of valve plate sticking. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0023] Figure 1 It is an axonometric view of a conventional intake throttle valve;

[0024] Figure 2 This is a diagram showing the installation position of the valve plate of a conventional intake throttle valve;

[0025] Figure 3 It is a structural schematic diagram of a conventional intake throttle valve in which the valve plate is in a stuck position;

[0026] Figure 4 An enlarged view of a valve plate of a conventional intake throttle valve in a stuck position;

[0027] Figure 5 A schematic diagram showing a structure in which a valve plate of a conventional intake throttle valve is incorrectly installed;

[0028] Figure 6 An axonometric view of an air intake throttle valve provided by an embodiment of the utility model;

[0029] Figure 7 A front view of an air intake throttle valve provided by an embodiment of the utility model;

[0030] Figure 8 A side view of an air intake throttle valve provided by an embodiment of the utility model;

[0031] Fig. 9 A bottom view of an air intake throttle valve provided by an embodiment of the utility model;

[0032] Fig.10 This is an axonometric view of the air intake pipe provided in an embodiment of the utility model.

[0033] in Figure 1-10 middle:

[0034] 01-valve plate, 02-valve body, 021-gas flow channel, 03-intake pipe, 04-intake throttle valve motor;

[0035] 1-valve plate, 2-valve body, 21-gas flow channel, 3-intake pipe, 31-anti-mistake installation groove, 32-intake channel, 4-intake throttle valve motor, 5-protective part, 51-second protective part, 52-first protective part. DETAILED DESCRIPTION

[0036] The core of the utility model is to provide an air intake throttle valve to reduce the situation of valve plate sticking. Another core of the utility model is to provide an engine including the air intake throttle valve.

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and implementation modes.

[0038] like Figures 6 to 9 As shown, in a specific embodiment, the intake throttle valve provided in the specific embodiment of the utility model includes a valve plate 1 and a valve body 2, the valve body 2 is provided with a gas flow channel 21, the valve plate 1 is installed in the gas flow channel 21, specifically, the valve plate 1 is driven to rotate by the intake throttle valve motor 4, and the intake throttle valve motor 4 is installed in the valve body 2.

[0039] A protective part 5 is provided at one end of the gas flow channel 21 connected to the air intake pipe 3, and the free end of the protective part 5 protrudes away from the gas flow channel 21. The inner wall of the protective part 5 forms an anti-jamming wall surface that is isolated from the valve plate 1 to allow the valve plate 1 to rotate freely. Specifically, the protective part 5 can be an annular tube structure, and the protective part 5 is bonded to the end of the valve body 2.

[0040] When the intake throttle valve is needed, the end of the valve body 2 provided with the protective part 5 is connected to the intake pipe 3, the inner wall of the intake channel 32 of the intake pipe 3 and the inner wall of the protective part 5 are smoothly transitioned, and the intake volume is adjusted by rotating the valve plate 1. At this time, the movement trajectory of the valve plate 1 is preferably completely in the inner cavity formed by the anti-stuck wall surface. Alternatively, the valve plate 1 is close to the inner cavity formed by the anti-stuck wall surface at the position away from the end of the valve plate shaft that is easily stuck.

[0041] From the above description, it can be known that in the intake throttle valve provided in the specific embodiment of the present application, a protective portion 5 is provided on one end of the valve body 2 connected to the intake pipe 3, and the protective portion 5 protrudes from the valve body 2 to prevent the intake pipe 3 from interfering with the rotation of the valve plate 1.

[0042] In a specific embodiment, the inner diameter of the anti-stuck wall surface is the same as the inner diameter of the gas flow channel 21, and the center of the anti-stuck wall surface and the center of the gas flow channel 21 are both located on the center line of the gas flow channel 21. Specifically, the anti-stuck wall surface is an extension surface of the wall surface of the gas flow channel 21, and the anti-stuck wall surface and the wall surface of the gas flow channel 21 are arranged in parallel.

[0043] Specifically, the gas flow channel 21 is a centrally symmetrical structure, for example, the gas flow channel 21 is a cylindrical channel. The rotation axis of the valve plate 1 is arranged parallel to a diameter of the gas flow channel 21, and the valve plate 1 rotates around the valve plate 1 axis to achieve a change in the flow area.

[0044] In a specific embodiment, the protection part 5 provided in the present application includes a first protection part 52 and a second protection part 51. Specifically, the first protection part 52 and the second protection part 51 are both connected to the valve body 2, and the two can be isolated from each other, or the two ends of the first protection part 52 are connected to the two ends of the second protection part 51 in the circumferential direction of the gas flow channel 21. At this time, the first protection part 52 and the second protection part 51 form an annular structure. At this time, specifically, the connection position of the first protection part 52 and the second protection part 51 can be bonded, or the first protection part 52 and the second protection part 51 can be integrally formed and installed on the valve body 2.

[0045] In a specific embodiment, the first protection part 52 is an arc-shaped plate body arranged along the circumference of the gas flow channel 21. Specifically, the first protection part 52 and the second protection part 51 are plate structures with the same thickness.

[0046] In order to reduce the entry of foreign matter into the gap between the valve plate 1 axis and the axis hole, the valve plate 1 axis needs to be arranged horizontally, such as Figure 1 and Figure 2 However, due to the symmetrical structure of the intake throttle valve mounting hole with the throttle valve flow pipe as the center, technicians in the market and maintenance tend to place the valve plate 1 vertically, such as Figure 5As shown, the valve plate 1 frequently gets stuck. Preferably, the second protective portion 51 is an arc-shaped plate arranged along the circumference of the gas flow channel 21, and the protective portion 5 protrudes from the valve body 2. The extension length of the first protective portion 52 is different from the extension length of the second protective portion 51. Specifically, the length of the first protective portion 52 is greater than the extension length of the second protective portion 51, or the length of the first protective portion 52 is less than the extension length of the second protective portion 51. With this arrangement, the air intake pipe 3 is provided with an anti-misalignment installation groove 31 adapted to the protective portion 5. When misaligned, the air intake pipe 3 and the valve body 2 cannot be assembled, thereby avoiding the problem of the valve plate 1 axis being vertical due to installation errors.

[0047] In order to prevent the extended length from being too short and affecting the error-proof installation, preferably, the extended length of the protective portion 5 is not less than 3 mm. Specifically, the extended length of the protective portion 5 is not less than 5 mm. Specifically, the extended length of the protective portion 5 can be 6 mm.

[0048] like Figure 7 As shown, in order to further avoid installation errors and provide effective error prevention prompts, preferably, the extension length L1 of the second protective portion 51 is greater than the extension length L2 of the first protective portion 52, and the difference between the extension length L1 of the second protective portion 51 and the extension length L2 of the first protective portion 52 is greater than or equal to 5 mm, that is, L1-L2≥5 mm.

[0049] The first protection part 52 and the second protection part 51 are both semicircular ring plate structures. Figure 7 and Figure 8 As shown, N is the diameter of the protective part 5, which is related to the diameter of the valve plate 1 and the thickness W of the protective part 5. Specifically, the diameter of the protective part 5 is the sum of twice the thickness of the protective part and the diameter of the valve plate 1. Specifically, M is the distance between the line connecting the two opposite ends of the second protective part 51 and the upper vertex of the second protective part 51. M / N is the proportion of the long error prevention section in the entire error prevention section. When the first protective part 52 and the second protective part 51 are both semicircular ring plate structures, at this time, M / N=0.5. In specific design, the ratio of M / N is not limited to the above situation.

[0050] The extension length L2 of the first protection portion 52 is determined according to the thickness of the mounting surface of the valve body 2. If the thickness of the mounting surface is small, more of the mounting surface will be exposed when the valve plate 1 rotates, that is, the interference risk is greater, and L2 needs to be larger.

[0051] In a specific embodiment, the rotation axis of the valve plate 1 is arranged parallel to the connecting line of the first protective part 52 and the second protective part 51. In the specific arrangement, the first protective part 52 and the second protective part 51 are used as a protective section of the valve plate 1 which is asymmetrically arranged up and down of the protective part 5, thereby improving the error prevention prompt effect and facilitating the staff to find the installation position of the valve plate 1 in time when assembling the intake throttle valve.

[0052] In order to improve the assembly efficiency, preferably, the valve body 2 and the protective part 5 are an integrally formed structure. At the same time, since the valve body 2 and the protective part 5 are an integrally formed structure, the difficulty of assembling the intake throttle valve by the staff is reduced. At this time, the valve body 2 and the protective part 5 are made of the same material, and the two are processed and formed at the same time. The thickness of the protective part 5 is selected to be smaller while ensuring reliability according to the material properties of the valve body 2.

[0053] The present application provides an engine, including an intake pipe 3 and an intake throttle valve, the intake throttle valve is connected to the intake pipe 3, wherein the intake throttle valve is any of the above-mentioned intake throttle valves. The above-mentioned specific structure of the intake throttle valve is described, and the present application includes the above-mentioned intake throttle valve, and also has the above-mentioned technical effects.

[0054] like Fig.10 As shown, the air intake pipe 3 is provided with an anti-mistake installation groove 31 adapted to the protective part 5. Specifically, the air intake pipe 3 is provided with an air intake channel 32, and the end of the air intake channel 32 is concave to form an anti-mistake installation groove 31 adapted to the protective part 5. Preferably, the protective part 5 is an asymmetric structure up and down, and the inlet section of the air intake pipe 3 is designed to correspond to the anti-mistake installation groove 31 to avoid the valve plate 1 from being installed incorrectly.

[0055] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0056] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An air intake throttle valve, characterized in that: The invention comprises a valve plate (1) and a valve body (2), wherein the valve body (2) is provided with a gas flow channel (21), the valve plate (1) is installed in the gas flow channel (21), and a protective part (5) is provided at one end of the gas flow channel (21) connected to the air intake pipe (3), wherein the free end of the protective part (5) protrudes away from the gas flow channel (21), and the inner wall of the protective part (5) forms an anti-jamming wall surface which is isolated from the valve plate (1) to allow the valve plate (1) to rotate freely.

2. The air intake throttle valve according to claim 1, characterized in that: The inner diameter of the anti-jamming wall surface is the same as the inner diameter of the gas flow channel (21), and the center of the anti-jamming wall surface and the center of the gas flow channel (21) are both located on the center line of the gas flow channel (21).

3. The air intake throttle valve according to claim 1, characterized in that: The protection part (5) comprises: a first protection portion (52), the first protection portion (52) being an arc-shaped plate body arranged along the circumference of the gas flow channel (21); A second protective portion (51), the second protective portion (51) is an arc-shaped plate body arranged along the circumference of the gas flow channel (21), the protective portion (5) protrudes from the valve body (2), and the extension length of the first protective portion (52) is different from the extension length of the second protective portion (51).

4. The air intake throttle valve according to claim 3, characterized in that: The extension length of the protective part (5) is not less than 3 mm, the extension length of the second protective part (51) is greater than the extension length of the first protective part (52), and the difference between the extension length of the second protective part (51) and the extension length of the protective part (5) is greater than or equal to 5 mm.

5. The air intake throttle valve according to claim 3, characterized in that: In the circumferential direction of the gas flow channel (21), two ends of the first protection part (52) are connected to two ends of the second protection part (51).

6. The air intake throttle valve according to claim 5, characterized in that: The first protection part (52) and the second protection part (51) are both semicircular ring-shaped plate structures.

7. The air intake throttle valve according to claim 6, characterized in that: The rotation axis of the valve plate (1) is arranged parallel to a line connecting the connection positions of the first protection part (52) and the second protection part (51).

8. The air intake throttle valve according to any one of claims 1 to 7, characterized in that: The valve body (2) and the protection portion (5) are an integrally formed structure.

9. An engine, comprising an intake pipe (3) and an intake throttle valve connected to the intake pipe (3), characterized in that: The air intake throttle valve is the air intake throttle valve according to any one of claims 1 to 8.

10. The engine according to claim 9, characterized in that The air intake pipe (3) is provided with an air intake channel (32), the end of the air intake channel (32) is concave to form an anti-mistake installation groove (31) adapted to the protective part (5), and the inner wall of the air intake channel (32) and the inner wall of the protective part (5) are smoothly transitioned.

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