Throttle valve structure and engine

Abstract

The utility model provides a throttle valve structure and engine, the throttle valve structure comprises a throttle valve body, mounting seat and solenoid valve subassembly, mounting seat is provided on the throttle valve body, mounting seat is provided with second intake passage, third intake passage and a plurality of first air holes, the plurality of first air holes are provided in the second intake passage, and the solenoid valve subassembly is provided in the third intake passage. The third air inlet channel is communicated with the second air inlet channel through the first air hole. The multiple first air holes are formed in the second air inlet channel, fuel gas can enter the second air inlet channel from the third air inlet channel through the multiple first air holes, in this way, the fuel gas and air flowing through the second air inlet channel can be more evenly mixed, follow-up combustion is more sufficient, and then the dynamic property of the engine is improved. And meanwhile, the mounting seat is additionally arranged on the throttle valve body, so that the overall structure of the throttle valve body does not need to be subjected to complicated improvement, the production and manufacturing cost is reduced, and the economical efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to throttle valve technical field, concretely relates to a throttle valve structure and engine. BACKGROUND

[0002] Dual-fuel engine refers to the engine that can use fuel and natural gas as power source. The main function of the intake system of the engine is to deliver clean, dry, sufficient and stable air to the engine to meet the operation requirements of the engine, and the throttle valve is an important component of the intake system and is a controllable valve for controlling air entering the engine.

[0003] The existing throttle valve of the dual-fuel engine usually has an air inlet hole on the inner side wall of the internal air passage of the throttle valve near the exhaust end. The fuel gas is injected into the internal air passage from the air inlet hole, mixed with air, and then flows to the intake manifold, and finally delivered to the combustion chamber by the intake manifold for combustion. Since there is usually only one air inlet hole, the mixing of fuel gas and air is uneven, which affects the subsequent combustion and the power of the engine. SUMMARY

[0004] In view of the defects in the prior art, the utility model aims to provide a throttle valve structure and engine, which can mix fuel gas and air more uniformly and improve the power of the engine.

[0005] To achieve the above-mentioned purpose, the utility model provides a throttle valve structure, which comprises a throttle valve body provided with a first air inlet passage; a mounting seat provided on the throttle valve body, the mounting seat being provided with a second air inlet passage, a third air inlet passage and a plurality of first air holes, the second air inlet passage being communicated with the exhaust end of the first air inlet passage, the plurality of first air holes being arranged in the second air inlet passage, the third air inlet passage being communicated with the second air inlet passage through the first air holes; and a solenoid valve assembly arranged in the third air inlet passage, the solenoid valve assembly being used for opening or blocking the third air inlet passage.

[0006] Preferably, the plurality of first air holes are arranged along the circumference of the second air inlet passage.

[0007] Preferably, the mounting seat is provided with a fourth air inlet passage, and the fourth air inlet passage is communicated with the third air inlet passage and the plurality of first air holes respectively.

[0008] Preferably, one side of the mounting base towards the throttle body is provided with a connecting end face abutting a flange end face of the throttle body, the connecting end face is recessed to form a first groove, the first groove is in communication with the third air inlet channel, and the first groove and the flange end face of the throttle body enclose the fourth air inlet channel; a flange is formed between the first groove and the second air inlet channel, the flange abuts the flange end face of the throttle body, and the first gas hole is arranged on the flange.

[0009] Preferably, a plurality of second grooves are recessed on the flange, and the second grooves and the flange end face of the throttle body enclose the first gas hole.

[0010] Preferably, the mounting base is provided with a second gas hole in communication with the third air inlet channel; the electromagnetic valve assembly comprises a mounting pipe and an electromagnetic valve body connected with each other, the mounting pipe is sealingly inserted into the third air inlet channel, and a partition block is arranged in the mounting pipe to divide the mounting pipe into a first chamber and a second chamber.

[0011] An outer side wall of the mounting pipe is provided with a plurality of third gas holes, the second gas hole is in communication with the first chamber through the third gas holes, an end of the second chamber away from the first chamber is provided in an open manner, the partition block is provided with a plurality of fourth gas holes, and the fourth gas holes are respectively in communication with the first chamber and the second chamber; the electromagnetic valve body is provided with a telescopic valve core, one end of the valve core extends into the first chamber and is provided with a first sealing member, and the first sealing member is used for opening or blocking the fourth gas holes.

[0012] Preferably, the plurality of third gas holes and the plurality of fourth gas holes are arranged in a ring array along an axis of the mounting pipe.

[0013] Preferably, the mounting pipe is provided with two second sealing members, and the third gas holes are located between the two second sealing members.

[0014] Preferably, a gap is formed between an outer side wall of the mounting pipe and an inner side wall of the third air inlet channel, and the gap is located between the two second sealing members.

[0015] The utility model also provides a kind of engine comprising the throttle structure described above.

[0016] The utility model has the beneficial effects that:

[0017] The utility model discloses a kind of throttle structure and engine, it designs multiple first air holes in second air inlet passage, gas will enter into second air inlet passage from multiple first air holes by third air inlet passage, since air will enter into second air inlet passage from first air inlet passage, therefore, gas spouted from each first air hole will mix with air. Since the number of first air hole has multiple, thus, this makes gas and air flowing through second air inlet passage can be more uniform mixing, to make subsequent combustion more sufficient, to improve the power of engine.

[0018] Meanwhile, by designing third air inlet passage and first air hole on mounting seat, only mounting seat is added on throttle body, in this way, the overall structure of throttle body does not need to be complicatedly improved, production manufacturing cost is reduced, and economy is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the drawings needed to be used in the specific embodiment or the prior art description will be briefly introduced below. In all drawings, similar elements or parts are generally identified by similar reference signs. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0020] Figure 1 The structure schematic view of the throttle structure provided by an embodiment of the utility model is shown in the figure.

[0021] Figure 2 The structure schematic view of the air inlet end side of the throttle structure is shown in the figure.

[0022] Figure 3 The structure schematic view of the mounting seat is shown in the figure.

[0023] Figure 4 The structure schematic view of the first groove and the second groove is shown in the figure.

[0024] Figure 5 The structure schematic view of the other side of the mounting seat is shown in the figure.

[0025] Figure 6 The structure schematic view of the electromagnetic valve assembly is shown in the figure.

[0026] Figure 7 The structure schematic view of the mounting pipe is shown in the figure.

[0027] Figure 8 The structure schematic view of the second chamber is shown in the figure.

[0028] Figure 9 The cross-sectional schematic view of the electromagnetic valve assembly is shown in the figure.

[0029] Figure 10 The cross-sectional schematic view of the inside of the mounting seat is shown in the figure.

[0030] Reference signs:

[0031] 10, throttle body; 11, first intake passage; 20, mounting seat; 21, second intake passage; 22, third intake passage; 23, first air hole; 24, connecting end face; 25, first groove; 26, flange; 27, second groove; 30, electromagnetic valve assembly; 31, mounting pipe; 311, partition block; 312, first chamber; 313, second chamber; 314, third air hole; 315, fourth air hole; 32, electromagnetic valve body; 321, valve core; 322, first sealing element; 33, second sealing element; 40, intake connector. DETAILED DESCRIPTION

[0032] The technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0033] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the usual meaning understood by the technical personnel in the field to which the present application belongs.

[0034] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] In addition, the terms "first", "second", and the like are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0036] In this application, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0037] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0038] like Figures 1-10 As shown, in one embodiment of the present invention, a throttle structure and an engine are provided. The throttle structure includes a throttle body 10, a mounting base 20, and a solenoid valve assembly 30. The throttle body 10 is provided with a first intake passage 11. The mounting base 20 is disposed on the throttle body 10 and is provided with a second intake passage 21, a third intake passage 22, and a plurality of first air holes 23. The second intake passage 21 is connected to the exhaust end of the first intake passage 11. The plurality of first air holes 23 are disposed in the second intake passage 21, and the third intake passage 22 is connected to the second intake passage 21 through the first air holes 23. The solenoid valve assembly 30 is disposed in the third intake passage 22. The solenoid valve assembly 30 opens or closes the third intake passage 22 through rapid opening and closing, thereby adjusting the gas concentration in the second intake passage 21.

[0039] This embodiment discloses a throttle valve structure and engine. By designing multiple first air holes 23 within the second intake passage 21, gas enters the second intake passage 21 from the third intake passage 22 through the multiple first air holes 23. Since air enters the second intake passage 21 from the first intake passage 11, the gas ejected from each first air hole 23 mixes with the air. The mixed gas then flows to the intake manifold (not shown in the drawings) and is finally transported by the intake manifold to the combustion chamber for combustion. The presence of multiple first air holes 23 allows for more uniform mixing of the gas and the air flowing through the second intake passage 21, resulting in more complete subsequent combustion and improved engine performance.

[0040] Meanwhile, by designing the third air inlet channel 22 and the first air holes 23 on the mounting base 20, the mounting base 20 is only needed to be added to the throttle body 10, and thus the overall structure of the throttle body 10 does not need to be complicatedly improved, the production manufacturing cost is reduced, and the economy is improved.

[0041] In an embodiment, the plurality of first air holes 23 are arranged along the circumference of the second air inlet channel 21, and specifically, six first air holes 23 are designed, and the fuel gas flows to the six first air holes 23 through the third air inlet channel 22 and flows into the second air inlet channel 21 from the first air holes 23 to realize the mixing with the air. Since the six first air holes 23 are arranged along the circumference of the second air inlet channel 21, the fuel gas is sprayed into the second air inlet channel 21 from different angles, and thus the mixing effect of the fuel gas and the air is greatly increased.

[0042] In an embodiment, the mounting base 20 is provided with a fourth air inlet channel, and the fourth air inlet channel is in communication with the third air inlet channel 22 and the plurality of first air holes 23. The third air inlet channel 22 is not in communication with each first air hole 23 through a separate air inlet channel, but is in communication with each first air hole 23 through the fourth air inlet channel. Such a structure design not only facilitates the flow of fuel gas to each first air hole 23, but also reduces the processing difficulty.

[0043] In an embodiment, the side of the mounting base 20 facing the throttle body 10 is provided with a connecting end face 24, and the connecting end face 24 abuts against the flange end face of the throttle body 10. The connecting end face 24 is recessed to form a first recess 25, the first recess 25 is in communication with the third air inlet channel 22, and the first recess 25 and the flange end face of the throttle body 10 form a fourth air inlet channel. A flange 26 is formed between the first recess 25 and the second air inlet channel 21, the flange 26 abuts against the flange end face of the throttle body 10, and the first air holes 23 are arranged on the flange 26.

[0044] Such a structure design does not need to process the fourth air inlet channel in the interior of the mounting base 20, but only needs to process the first recess 25 on the connecting end face 24, and after the connecting end face 24 abuts against the flange end face of the throttle body 10, the fourth air inlet channel is formed, and the processing difficulty of the mounting base 20 is reduced.

[0045] In an embodiment, in order to reduce the processing difficulty of the first air holes 23 and facilitate the formation of the first air holes 23, six second recesses 27 are recessed on the flange 26, and the second recesses 27 and the flange end face of the throttle body 10 form the first air holes 23.

[0046] In one embodiment, the mounting base 20 is provided with a second air hole in communication with the third air inlet channel 22, and the second air hole is provided with an air inlet connector 40. The electromagnetic valve assembly 30 comprises a mounting pipe 31 and an electromagnetic valve body 32 connected together, the mounting pipe 31 is sealingly inserted into the third air inlet channel 22, and the mounting pipe 31 is provided with a partition block 311, which divides the mounting pipe 31 into a first chamber 312 and a second chamber 313. The outer side wall of the mounting pipe 31 is provided with four third air holes 314, the second air hole is in communication with the first chamber 312 through the third air holes 314, and the end of the second chamber 313 away from the first chamber 312 is provided in an open manner. The partition block 311 is provided with three fourth air holes 315, and the fourth air holes 315 are in communication with the first chamber 312 and the second chamber 313, respectively. The electromagnetic valve body 32 is provided with a telescopic valve core 321, one end of the valve core 321 extends into the first chamber 312 and is provided with a first sealing member 322, and the first sealing member 322 is used to open or block the fourth air holes 315.

[0047] Specifically, the four third air holes 314 and the three fourth air holes 315 are arranged in a ring array along the axis of the mounting pipe 31.

[0048] The valve core 321 can drive the first sealing member 322 to quickly and high-frequency open or block the second air hole under the combined action of the electromagnetic force of the coil and the elastic force of the elastic member, so as to achieve the effect of adjusting the gas concentration in the second air inlet channel 21. After the gas enters the first chamber 312 through the air inlet connector 40 and the third air holes 314, the first sealing member 322 opens the three fourth air holes 315, and then the gas flows to the second chamber 313, the third air inlet channel 22 and the fourth air inlet channel in turn, and finally is sprayed out from the six first air holes 23 and mixed with the air in the second air inlet channel 21.

[0049] The positions of the four third air holes 314 are designed so that after the mounting pipe 31 is inserted into the third air inlet channel 22, the second air hole can be aligned with the third air hole 314, thereby improving the air inlet effect.

[0050] In one embodiment, in order to make the gas flow only from the first chamber 312 to the second chamber 313 and ensure effective control of the gas concentration, the mounting pipe 31 is provided with two second sealing members 33, and the third air holes 314 are located between the two second sealing members 33.

[0051] In one embodiment, a gap is formed between the outer side wall of the mounting pipe 31 and the inner side wall of the third air inlet channel 22, and the gap is located between the two second sealing members 33. The gas entering the gap from the air inlet connector 40 can enter the first chamber 312 from each third air hole 314, which further improves the air inlet effect.

[0052] In the description of the present utility model, a large number of specific details are explained. However, it can be understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail in order not to obscure the understanding of this description.

[0053] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model, and they should be covered in the scope of the claims and the description of the present utility model.

Claims

1. A throttle structure, characterized in that: include: The throttle body (10) is provided with a first air intake passage (11); A mounting seat (20) is provided on the throttle body (10), the mounting seat (20) being provided with a second air intake passage (21), a third air intake passage (22) and a plurality of first air holes (23), the second air intake passage (21) being in communication with an exhaust end of the first air intake passage (11), the plurality of first air holes (23) being provided in the second air intake passage (21), and the third air intake passage (22) being in communication with the second air intake passage (21) via the first air holes (23); as well as The solenoid valve assembly (30) is arranged in the third air intake passage (22), and the solenoid valve assembly (30) is used to open or block the third air intake passage (22).

2. The throttle structure according to claim 1, characterized in that: A plurality of the first air holes (23) are arranged at intervals along the circumference of the second air inlet passage (21).

3. The throttle structure according to claim 2, characterized in that: A fourth air inlet channel is provided in the mounting seat (20), and the fourth air inlet channel is respectively in communication with the third air inlet channel (22) and the plurality of first air holes (23).

4. The throttle valve structure according to claim 3, characterized in that: The mounting seat (20) is provided with a connecting end surface (24) on a side facing the throttle body (10), the connecting end surface (24) abutting against the flange end surface of the throttle body (10), the connecting end surface (24) being recessed to form a first groove (25), the first groove (25) being in communication with the third air intake passage (22), and the first groove (25) and the flange end surface of the throttle body (10) forming the fourth air intake passage; A flange (26) is formed between the first groove (25) and the second air intake passage (21), the flange (26) abuts against the flange end surface of the throttle body (10), and the first air hole (23) is provided on the flange (26).

5. The throttle valve structure according to claim 4, characterized in that: A plurality of second grooves (27) are formed on the flange (26), and the second grooves (27) and the flange end surface of the throttle body (10) are combined to form the first air hole (23).

6. The throttle valve structure according to claim 1, characterized in that: The mounting seat (20) is provided with a second air hole communicating with the third air inlet channel (22); The solenoid valve assembly (30) comprises a mounting tube (31) and a solenoid valve body (32) connected to each other, the mounting tube (31) being sealed and inserted in the third air inlet passage (22), a partition block (311) being provided in the mounting tube (31), and the partition block (311) partitioning the mounting tube (31) into a first chamber (312) and a second chamber (313); The outer wall of the mounting tube (31) is provided with a plurality of third air holes (314), the second air holes are communicated with the first chamber (312) through the third air holes (314), the second chamber (313) is open at one end away from the first chamber (312), and the partition block (311) is provided with a plurality of fourth air holes (315), the fourth air holes (315) respectively communicating with the first chamber (312) and the second chamber (313); The solenoid valve body (32) is provided with a retractable valve core (321), one end of the valve core (321) extends into the first chamber (312) and is provided with a first sealing member (322), the first sealing member (322) being used to open or block the fourth air hole (315).

7. The throttle valve structure according to claim 6, characterized in that: The plurality of third air holes (314) and the plurality of fourth air holes (315) are arranged in a ring array along the axis of the mounting tube (31).

8. The throttle valve structure according to claim 7, characterized in that: The outer shell of the mounting tube (31) is provided with two second sealing members (33), and the third air hole (314) is located between the two second sealing members (33).

9. The throttle valve structure according to claim 8, characterized in that: A gap is formed between the outer side wall of the mounting tube (31) and the inner side wall of the third air inlet passage (22), and the gap is located between the two second sealing members (33).

10. An engine, characterized in that: The invention comprises the throttle structure according to any one of claims 1 to 9.

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