Throttle valve structure and engine

Abstract

The invention provides a throttle valve structure and an engine, the throttle valve structure comprises a throttle valve body, a mounting seat and an electromagnetic valve assembly, the mounting seat is arranged on the throttle valve body, the mounting seat is provided with a second air inlet channel, a third air inlet channel and a plurality of first air holes, and the first air holes are formed in the second air inlet channel; 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 invention relates to the technical field of throttle valves, and in particular to a throttle valve structure and an engine. Background Art

[0002] A dual-fuel engine is an engine that can use both fuel and natural gas as power sources. The main function of the engine's intake system is to deliver clean, dry, sufficient and stable air to the engine to meet the engine's operating requirements, and the throttle is an important component of the intake system and a controllable valve that controls the air entering the engine.

[0003] The throttle of an existing dual-fuel engine usually has an intake hole on the inner wall of the throttle's internal air passage near the exhaust end. After the gas is sprayed into the internal air passage from the intake hole, it mixes with the air, and the mixed gas flows to the intake manifold, and is finally transported by the intake manifold to the combustion chamber for combustion. Since there is usually only one intake hole, the mixing of gas and air is uneven, which affects the subsequent combustion and the power of the engine. Summary of the invention

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide a throttle structure and an engine, so that the fuel gas and air are mixed more evenly and the power of the engine is improved.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a throttle structure, including a throttle body, provided with a first intake channel; a mounting seat, arranged on the throttle body, the mounting seat is provided with a second intake channel, a third intake channel and a plurality of first air holes, the second intake channel is connected to the exhaust end of the first intake channel, a plurality of first air holes are arranged in the second intake channel, the third intake channel is connected to the second intake channel through the first air holes; and a solenoid valve assembly, arranged in the third intake channel, the solenoid valve assembly is used to open or block the third intake channel.

[0006] Preferably, a plurality of the first air holes are arranged at intervals along the circumferential direction of the second air inlet passage.

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

[0008] Preferably, the mounting seat is provided with a connecting end face on the side facing the throttle body, the connecting end face abuts against the flange end face of the throttle body, the connecting end face is recessed to form a first groove, the first groove is connected to the third air intake channel, the first groove and the flange end face of the throttle body together form the fourth air intake channel; a flange is formed between the first groove and the second air intake channel, the flange abuts against the flange end face of the throttle body, and the first air hole is arranged on the flange.

[0009] Preferably, a plurality of second grooves are formed on the flange, and the second grooves and the flange end surface of the throttle body are combined to form the first air hole.

[0010] Preferably, the mounting seat is provided with a second air hole communicating with the third air inlet passage; the solenoid valve assembly comprises a mounting tube and a solenoid valve body connected to each other, the mounting tube is sealingly inserted in the third air inlet passage, a partition block is provided in the mounting tube, and the partition block divides the mounting tube into a first chamber and a second chamber;

[0011] The outer wall of the mounting tube is provided with a plurality of third air holes, the second air hole is connected with the first chamber through the third air holes, the second chamber is open at one end away from the first chamber, the partition block is provided with a plurality of fourth air holes, the fourth air holes are connected with the first chamber and the second chamber respectively; the solenoid valve body is provided with a retractable valve core, one end of the valve core extends into the first chamber and is provided with a first sealing member, the first sealing member is used to open or block the fourth air hole.

[0012] Preferably, the plurality of third air holes and the plurality of fourth air holes are arranged in a circular array along the axis of the mounting tube.

[0013] Preferably, two second sealing members are disposed on the outer sleeve of the mounting tube, and the third air hole is located between the two second sealing members.

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

[0015] The present invention also provides an engine, comprising the above-mentioned throttle structure.

[0016] Beneficial effects of the present invention:

[0017] The present invention discloses a throttle structure and an engine, wherein a plurality of first air holes are designed in the second air intake passage, and the gas enters the second air intake passage from the third air intake passage through the plurality of first air holes. Since the air enters the second air intake passage from the first air intake passage, the gas ejected from each first air hole will mix with the air. Since there are a plurality of first air holes, the gas and the air flowing through the second air intake passage can be mixed more evenly, so that the subsequent combustion is more complete, thereby improving the power of the engine.

[0018] At the same time, by designing the third air intake passage and the first air hole on the mounting seat, it is only necessary to install the mounting seat on the throttle body. In this way, there is no need to make complicated improvements to the overall structure of the throttle body, thereby reducing production costs and improving economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0020] Figure 1 A schematic structural diagram of a throttle structure provided in one embodiment of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the intake end side of the throttle structure;

[0022] Figure 3 is a schematic diagram of the structure of the mounting base;

[0023] Figure 4 is a schematic diagram of the structure of the first groove and the second groove;

[0024] Figure 5 It is a schematic diagram of the structure on the other side of the mounting base;

[0025] Figure 6 It is a structural schematic diagram of a solenoid valve assembly;

[0026] Figure 7 It is a schematic diagram of the structure of the installation pipe;

[0027] Figure 8 is a schematic structural diagram of the second chamber;

[0028] Fig. 9 is a cross-sectional schematic diagram of a solenoid valve assembly;

[0029] Fig.10 is a cross-sectional schematic diagram of the interior of the mounting base;

[0030] Reference numerals:

[0031] 10. Throttle body; 11. First air intake passage; 20. Mounting seat; 21. Second air intake passage; 22. Third air intake passage; 23. First air hole; 24. Connecting end face; 25. First groove; 26. Flange; 27. Second groove; 30. Solenoid valve assembly; 31. Mounting tube; 311. Partition block; 312. First chamber; 313. Second chamber; 314. Third air hole; 315. Fourth air hole; 32. Solenoid valve body; 321. Valve core; 322. First sealing member; 33. Second sealing member; 40. Intake pipe. DETAILED DESCRIPTION

[0032] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0033] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the invention belongs.

[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0036] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature 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. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

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

[0039] The throttle structure and engine disclosed in this embodiment are designed with multiple first air holes 23 in the second air intake passage 21, and the gas will enter the second air intake passage 21 from the third air intake passage 22 through the multiple first air holes 23. Since the air will enter the second air intake passage 21 from the first air intake passage 11, the gas ejected from each first air hole 23 will mix with the air, and the mixed gas will flow to the intake manifold (not shown in the drawings), and finally be transported by the intake manifold to the combustion chamber for combustion. Since there are multiple first air holes 23, the gas and the air flowing through the second air intake passage 21 can be mixed more evenly, so that the subsequent combustion is more complete, thereby improving the power of the engine.

[0040] At the same time, by designing the third air intake passage 22 and the first air hole 23 on the mounting seat 20, it is only necessary to install the mounting seat 20 on the throttle body 10. In this way, there is no need to make complicated improvements to the overall structure of the throttle body 10, thereby reducing the production cost and improving the economy.

[0041] In one embodiment, a plurality of first air holes 23 are arranged at intervals along the circumference of the second air intake passage 21. Specifically, there are six first air holes 23. The gas flows to the six first air holes 23 through the third air intake passage 22, and flows into the second air intake passage 21 from the first air holes 23 to achieve mixing with the air. Since the six first air holes 23 are arranged at intervals along the circumference of the second air intake passage 21, the gas will be sprayed into the second air intake passage 21 from different angles, thus greatly increasing the mixing effect of the gas and the air.

[0042] In one embodiment, a fourth air inlet channel is provided in the mounting base 20, and the fourth air inlet channel is respectively connected with the third air inlet channel 22 and the plurality of first air holes 23. The third air inlet channel 22 is not connected with each first air hole 23 through a separate air inlet channel, but is connected with each first air hole 23 through the fourth air inlet channel. Such a structural design is not only conducive to the gas flowing to each first air hole 23, but also reduces the difficulty of processing.

[0043] In one embodiment, the mounting seat 20 is provided with a connecting end surface 24 on one side facing the throttle body 10, and the connecting end surface 24 abuts against the flange end surface of the throttle body 10. The connecting end surface 24 is recessed to form a first groove 25, and the first groove 25 is communicated with the third air intake passage 22. The first groove 25 and the flange end surface of the throttle body 10 are surrounded to form a fourth air intake passage. A flange 26 is formed between the first groove 25 and the second air intake passage 21, and the flange 26 abuts against the flange end surface of the throttle body 10. The first air hole 23 is provided on the flange 26.

[0044] This structural design does not require processing of the fourth air intake passage inside the mounting seat 20 , but only requires processing of the first groove 25 on the connecting end face 24 . After the connecting end face 24 is abutted against the flange end face of the throttle body 10 , the fourth air intake passage can be formed, thereby reducing the processing difficulty of the mounting seat 20 .

[0045] In one embodiment, in order to reduce the difficulty of processing the first air hole 23 and facilitate forming the first air hole 23 , six second grooves 27 are formed on the flange 26 , and the second grooves 27 and the flange end surface of the throttle body 10 surround the first air hole 23 .

[0046] In one embodiment, the mounting seat 20 is provided with a second air hole connected to the third air inlet passage 22, and an air inlet pipe 40 is provided in the second air hole. The solenoid valve assembly 30 includes a mounting tube 31 and a solenoid valve body 32 connected to each other, the mounting tube 31 is sealed and inserted in the third air inlet passage 22, and a partition block 311 is provided in the mounting tube 31, and the partition block 311 divides the mounting tube 31 into a first chamber 312 and a second chamber 313. Four third air holes 314 are provided on the outer wall of the mounting tube 31, and the second air hole is connected to the first chamber 312 through the third air holes 314. The end of the second chamber 313 away from the first chamber 312 is open, and three fourth air holes 315 are provided on the partition block 311, and the fourth air holes 315 are connected to the first chamber 312 and the second chamber 313 respectively. 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 is used to open or block the fourth air hole 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 tube 31 .

[0048] The valve core 321 can drive the first sealing member 322 to quickly and frequently 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, thereby adjusting the gas concentration in the second air intake channel 21. After the gas enters the first chamber 312 through the air intake pipe 40 and the third air hole 314, the first sealing member 322 opens the three fourth air holes 315, and the gas will flow to the second chamber 313, the third air intake channel 22 and the fourth air intake channel in sequence, and finally, it will be ejected from the six first air holes 23 and mixed with the air in the second air intake channel 21.

[0049] The position design of the four third air holes 314 makes it easy to align the second air holes with the third air holes 314 after the mounting tube 31 is inserted into the third air inlet passage 22, thereby improving the air intake effect.

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

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

[0052] In the description of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as 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 invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. 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 invention, and they should all be included in the scope of the claims and specification of the present invention.

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) disposed 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 connected to an exhaust end of the first air intake passage (11), the plurality of first air holes (23) being disposed in the second air intake passage (21), and the third air intake passage (22) being connected to the second air intake passage (21) through the first air holes (23); and 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 circumferential direction 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 connected to the third air inlet channel (22) and the plurality of first air holes (23).

4. The throttle structure according to claim 3, characterized in that: The mounting seat (20) is provided with a connecting end surface (24) on one side facing the throttle body (10), the connecting end surface (24) abuts against the flange end surface of the throttle body (10), the connecting end surface (24) is recessed to form a first groove (25), the first groove (25) is communicated with the third air intake passage (22), and the first groove (25) and the flange end surface of the throttle body (10) together form 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 arranged on the flange (26).

5. The throttle structure according to claim 4, characterized in that: The flange (26) is recessed to form a plurality of second grooves (27), 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 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 passage (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 intake 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 connected to 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) are connected to the first chamber (312) and the second chamber (313) respectively; 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), and the first sealing member (322) is used to open or block the fourth air hole (315).

7. The throttle 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 circular array along the axis of the mounting tube (31).

8. The throttle structure according to claim 7, characterized in that: The outer sleeve of the installation 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 7, 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.

Images