CN216044079U - Oil needle, oil spout structure and carburetor - Google Patents
Oil needle, oil spout structure and carburetor Download PDFInfo
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- CN216044079U CN216044079U CN202122456269.9U CN202122456269U CN216044079U CN 216044079 U CN216044079 U CN 216044079U CN 202122456269 U CN202122456269 U CN 202122456269U CN 216044079 U CN216044079 U CN 216044079U
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Abstract
The utility model has provided a oil needle, oil injection structure and adopted the carburetor of the oil needle, including presenting the cylindrical body of rod, there are cavities axially along the body of rod, one end of cavity is open, another end is closed, there are multiple micropores on the body of rod at intervals, all micropores communicate with cavity, the micropore has two rows symmetrically arranged, the line of all micropore centres of the same row is parallel to axis of rod; the rod body of the oil injection structure radially penetrates through the airflow channel, the lower end of the rod body directly or indirectly extends into fuel oil, the top of the rod body is connected with a plunger, the fuel oil can be sprayed out from the micropores only under the action of negative pressure to form oil mist, and the spraying direction of the just sprayed oil mist is vertical to the axis of the airflow channel; the structure can greatly improve the performance of the engine, effectively improve the power of the engine, enhance the power output, greatly improve the response capability and the response speed of the engine, flexibly and accurately repair air-fuel ratio data, and more easily meet the emission standard.
Description
Technical Field
The utility model belongs to the technical field of engine accessories, and particularly relates to an oil needle, an oil injection structure and a carburetor adopting the oil needle.
Background
The carburetor is a mechanical device which mixes gasoline and air in a certain proportion under the action of vacuum generated by the operation of an engine. At present, plunger type carburetors, vacuum carburetors and electronic fuel injection carburetors are mainly available.
Among the prior art, document CN2014207246614 discloses a carburetor for motorcycle, including the gas flow path that axial level and interlude cross-sectional area reduce, trompil above the gas flow path, this downthehole piston (being equivalent to the plunger) that can move in vertical direction that sets up, the piston lower extreme sets up the metering orifice needle valve of adjusting gas flow, metering orifice needle valve axial is vertical and tip down, the position that corresponds to the metering orifice needle valve below the gas flow path is equipped with the needle valve metering orifice, the tip of metering orifice needle valve can reciprocate inside the needle valve metering orifice, the lower extreme intercommunication batch oil tank of needle valve metering orifice. Document CN206503649U discloses a plunger type carburetor, wherein a nozzle body is arranged at the throat of a carburetor body, a trumpet-shaped flow guide surface is arranged below the nozzle in the nozzle body, the flow guide surface is a cylindrical swirler with a conical hole at the lower end, the flow guide surface and the swirler are coaxial with the nozzle, a plunger oil needle passes through the middle through holes of the nozzle and the swirler, the lower end of the plunger oil needle is connected with a plunger valve, and the plunger oil needle is driven by a tension line or a diaphragm to drive the plunger valve to move up and down.
As mentioned above, typical tapered oil needles are used in carburetors, and problems associated with their use include: the control is not accurate enough, and the change of the engine load can not be reflected quickly during normal driving to adjust the concentration of the mixed gas. The engine is often in an insufficient combustion state, the content of harmful substances in the exhaust emission cannot meet increasingly strict emission regulations, and high oil consumption is generated at the same time.
More critically, the air-fuel ratio is 14.7:1 under the ideal condition, and the existing pure mechanical carburetors have the defects that the air-fuel mixture close to the ideal characteristic is difficult to obtain, the air-fuel ratio data is difficult to flexibly and accurately revise, and the plateau reaction of the engine is difficult to adapt.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an oil needle, an oil injection structure and a carburetor adopting the oil needle, which are at least used for solving the technical problems mentioned in the background technology.
In order to achieve the purpose, the utility model adopts the following technical scheme.
The utility model provides an oil needle, is provided with the cavity including the body of rod that is the cylindricality along body of rod axial, and wherein one end of cavity is uncovered, the other end seals, and the interval is provided with a plurality of micropores on the body of rod, and all micropores communicate with each other its characterized in that with the cavity: two rows of micropores are symmetrically arranged, and connecting lines of centers of all micropores in the same row are parallel to the axis of the rod body.
In order to reduce the oil mist suction difficulty and improve the oil mist suction efficiency, the micropores are radially arranged.
As a preferred scheme, all micropores in the same row are arranged in equal diameter and equal interval; or all the micropores in the same row are arranged in a non-equal diameter and equal interval manner; or all the micropores in the same row are arranged in a non-equal diameter and non-equal interval manner; alternatively, all the micropores in the same row are arranged in the same diameter and non-equal intervals.
In order to further reduce the oil mist suction difficulty, the outer wall of the rod body is an arc surface, and when the air flow bypasses the outer wall of the rod body, the part of the air flow, which is just contacted with the rod body, is used as an initial point, and the micropores are symmetrically arranged at the top of the arc surface outside the initial point.
In order to improve the fuel atomization effect, enable the air-fuel ratio to be closer to an ideal state and reduce exhaust pollutants generated during engine combustion, when the rod body is a cylinder or an elliptic cylinder, the radial section of the cavity is at the initial point of 0 degree, and the micropores are respectively arranged at the 90-degree position and the 270-degree position.
The utility model provides an adopt oil spout structure of aforementioned oil needle which characterized in that: the rod body radially passes through the airflow channel, the lower end of the rod body directly or indirectly extends into fuel oil, the top of the rod body is connected with the plunger, the fuel oil can be sprayed out of the micropores under the action of negative pressure to form oil mist, and the spraying direction of the just sprayed oil mist is perpendicular to the axis of the airflow channel. With this structure, the fuel can be easily sucked out so that the fuel can be uniformly introduced into the air flow passage in the form of oil mist.
Further, the rod axis intersects the airflow channel axis; the middle section of the airflow channel is a small-diameter section, and the left side and the right side of the middle section are both expansion sections; when the plunger moves up and down, the rod body synchronously goes up and down along with the plunger; the rod body stretches into the pipe cavity of the connecting pipe, the lower end of the connecting pipe stretches into fuel oil, and the rod body and the connecting pipe are in clearance sealing. By adopting the structure, the fuel can be efficiently atomized, so that the fuel mixture entering the engine is finer, and the combustion efficiency is greatly improved.
A carburetor adopting the oil needle is characterized in that: the air flow channel is formed by the middle section of the air flow channel, a concentric reducing pipe cavity of the concentric reducing connecting piece I and a concentric reducing pipe cavity of the concentric reducing connecting piece II; the middle section of the air channel is radially provided with an air valve assembly, an oil needle of the air valve assembly is vertically arranged and is perpendicular to and intersected with the axis of the middle section of the air channel, the lower end of the oil needle of the air valve assembly is matched in the connecting pipe in a clearance sealing mode all the time, and the lower end of the connecting pipe extends into fuel all the time.
Furthermore, the air valve assembly comprises a plunger, a through hole used for being matched with a rod body of the oil needle is axially arranged on the plunger, a strip-shaped groove is axially arranged on the side of the through hole, an inner concave part is arranged at the lower part of the strip-shaped groove, and the tail end of a stay rope penetrating through the strip-shaped groove is clamped and hung on the inner concave part; the top of the through hole is provided with a mounting hole, the bottom of the mounting hole is provided with a limiting groove for limiting the rod body, a limiting block at the top of the rod body is matched in the limiting groove, a pressing block is further arranged in the mounting hole and presses the limiting block, a reset spring is arranged above the limiting block, the top of the reset spring is connected with a top cover assembly, and a cable passes through the top cover assembly; when the pull cable is driven to move upwards by means of external force, the pull cable drives the plunger and the built-in part thereof to move upwards synchronously, so that the exposed quantity of the micropores on the rod body of the oil needle is increased and increased, and the oil needle stops until the plunger props against the top cover assembly, and the reset spring is compressed in the process; after the external force is cancelled or reduced, the reset spring resets, and the plunger, the pressing block, the limiting block and the oil needle synchronously move downwards, so that the exposure quantity of micropores on the rod body of the oil needle is less and less.
In order to facilitate the assembly and disassembly of the carburetor, the concave part is a notch and is opposite to the central part of the concentric reducing connecting piece in the air inlet direction.
The utility model has the following beneficial effects: (1) the performance of the engine can be greatly improved, the power of the engine is effectively improved, and the power output is enhanced; (2) the response capability and the response speed of the engine are greatly improved, the air-fuel ratio data can be flexibly and accurately repaired, and the emission standard can be easily met; (3) the engine can easily adapt to the altitude reaction of the engine; (4) the fuel oil atomization device is environment-friendly, the fuel oil atomization state is good, the combustion efficiency is high, CO (carbon monoxide) and HC (hydrocarbon) in exhaust gas generated by combustion in an engine cylinder are greatly reduced, and the strict national six-emission standard can be completely met; (5) the fuel requirement of each rotating speed section of the engine can be accurately controlled, so that the fuel consumption rate of the structure is greatly reduced compared with that of the traditional conical oil needle structure, and the fuel waste is avoided; (6) the air-fuel ratio is extremely close to the stoichiometric air-fuel ratio by a purely mechanical structure, and an excellent combustion state is realized.
Drawings
FIG. 1 is a schematic view of an oil needle in example 1;
FIG. 2 is a schematic view showing the state of use of the oil needle in example 1;
FIG. 3 is a schematic view showing a cross section of the oil needle and a flow direction of a fluid in a use state in example 1;
FIG. 4 is a schematic view showing the cross section of the oil needle and the flow direction of the fluid in the use state in example 2;
FIG. 5 is a schematic view showing the cross section of the oil needle and the flow direction of the fluid in the use state in example 3;
FIG. 6 is a schematic view of an oil spout structure in embodiment 4;
FIG. 7 is a schematic view of an oil spout structure in embodiment 5;
FIG. 8 is an exploded perspective view of the carburetor of example 6;
FIG. 9 is an exploded view of the valve assembly of the carburetor of embodiment 6;
FIG. 10 is a first schematic view of the plunger of the carburetor of embodiment 6;
FIG. 11 is a second schematic view of the plunger of the carburetor of embodiment 6.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Example 1
As shown in fig. 1 to 3, an oil needle comprises a cylindrical rod body 5, a cavity 4 is axially arranged along the rod body 5, one end of the cavity 4 is open, the other end of the cavity is closed, a plurality of micropores 2 are arranged on the rod body 5 at intervals, all the micropores 2 are communicated with the cavity 4, the micropores 2 are symmetrically arranged in two rows, and the connecting line of the centers of all the micropores 2 in the same row is parallel to the axis of the rod body 5. The micropores 2 are arranged in a radial mode, and all the micropores 2 in the same row are arranged in an equal-diameter and equal-interval mode. When the airflow bypasses (flows through) the outer wall of the rod body 5, the two rows of micropores 2 are symmetrically arranged at the top of the arc surface beyond the initial point by taking the part of the airflow just contacted with the rod body 5 as the initial point, specifically as shown in fig. 3, in the radial section of the cavity 4, the initial point is at a 0-degree position, and the micropores 2 are respectively arranged at 90-degree positions and 270-degree positions, that is, the micropores 2 are respectively arranged at 90-degree positions and 270-degree positions on the circumference. In use, air flows from the starting point (0 ° position) towards the rod body 5, a part of the air flow flows along the outer wall of the rod body 5, and when the air flow passes through the 90 ° position and the 270 ° position (i.e. the position of the micro-holes 2), fuel is sucked away from the micro-holes 2 and atomized under the action of negative pressure, the air flow direction is indicated by an arrow 3, the fuel flow direction is indicated by an arrow 1, and the oil mist flow direction is indicated by an arrow 9.
Example 2
An oil needle, the main structure of which is shown in reference to embodiment 1 and combined with fig. 4, the main difference from embodiment 1 lies in: the cross section of the rod body 5 is elliptic.
Example 3
As shown in fig. 5, the oil needle comprises a rod body 5, a cavity 4 is axially arranged along the rod body 5, one end of the cavity 4 is open, the other end of the cavity 4 is closed, a plurality of micropores 2 are arranged on the rod body 5 at intervals, all the micropores 2 are communicated with the cavity 4, the micropores 2 are symmetrically arranged in two rows, and connecting lines of centers of all the micropores 2 in the same row are parallel to the axis of the rod body 5. The micropores 2 are arranged in a radial mode, and all the micropores 2 in the same row are arranged in an equal-diameter and equal-interval mode. Wherein, the section of the cavity 4 of the rod body 5 is circular; the outer wall of the rod body 5 is provided with two inclined planes and two arc-shaped areas, the two inclined planes are symmetrically arranged, one sides, close to each other, of the two are connected through a first arc-shaped area 51, one sides, far away from each other, of the two are connected through a second arc-shaped area 52, and the cavity 4 is arranged close to one side of the second arc-shaped area 52. When the airflow bypasses (flows through) the outer wall of the rod body 5, the two rows of micropores 2 are symmetrically arranged at the top of the arc surface outside the initial point by taking the first arc-shaped area 51 where the airflow just contacts with the rod body 5 as the initial point, namely the transition area between the inclined surface and the second arc-shaped area 52. In use, air flows from the first arc-shaped area 51 towards the rod body 5, a part of the air flow flows along the outer wall of the rod body 5, and when the air flow passes through the micro-holes 2, fuel is sucked from the micro-holes 2 and atomized under the action of negative pressure, wherein the air flow direction is indicated by an arrow 3, the fuel flow direction is indicated by an arrow 1, and the oil mist flow direction is indicated by an arrow 9.
Example 4
Referring to fig. 6, in a fuel injection structure using the oil needle described in embodiment 1, embodiment 2, or embodiment 3, the rod 5 radially passes through the airflow channel 12, the lower end of the rod 5 directly or indirectly extends into the fuel, the plunger 6 is connected to the top of the rod 5, the fuel can be ejected from the micro-hole 2 only under the action of negative pressure to form an oil mist, and the ejection direction of the just ejected oil mist is perpendicular to the axis of the airflow channel 12. Wherein, the axis of the rod body 5 is crossed with the axis of the airflow channel 12; the middle section of the airflow channel 12 is a small-diameter section, and the left side and the right side of the middle section are both expanding sections; when the plunger 6 moves up and down, the rod body 5 is lifted synchronously with the plunger 6; the rod body 5 extends into a pipe cavity 10 of the connecting pipe 7, the lower end of the connecting pipe 7 extends into fuel oil, and the rod body 5 and the connecting pipe 7 are in clearance sealing. In the using state, the air flow process is combined with the arrow in the embodiment 1 and fig. 6, the air flows from the inner cavity 12 of the right expansion section 11 to the rod body 5, the air sucks and atomizes the fuel oil when flowing through the micropores 2 along the outer wall of the rod body 5, and finally the fuel oil enters the engine cylinder body through the inner cavity of the left expansion section.
Example 5
Referring to fig. 7, in a fuel injection structure using the oil needle described in embodiment 1, embodiment 2, or embodiment 3, the rod 5 radially passes through the airflow channel 12, the lower end of the rod 5 directly or indirectly extends into the fuel, the plunger 6 is connected to the top of the rod 5, the fuel can be ejected from the micro-hole 2 only under the action of negative pressure to form an oil mist, and the ejection direction of the just ejected oil mist is perpendicular to the axis of the airflow channel 12.
Example 6
Referring to fig. 8 to 11, a carburetor using the oil pointer of embodiment 1 includes a housing 20, an air flow channel middle section 28 is transversely disposed on the housing 20, two ends of the air flow channel middle section 28 are respectively connected to a first concentric reducing connector 21 and a second concentric reducing connector 22, and an air flow channel 12 is formed by the air flow channel middle section 28, a concentric reducing tube cavity of the first concentric reducing connector 21 and a tube cavity of the second concentric reducing connector 22; an air valve assembly is radially arranged at the middle section 28 of the air flow channel, an oil needle of the air valve assembly is vertically arranged and is perpendicular to and intersected with the axis of the middle section 28 of the air flow channel, the lower end of the oil needle of the air valve assembly is matched in the connecting pipe 7 in a clearance sealing mode all the time, and the lower end of the connecting pipe 7 extends into fuel all the time.
The air valve assembly comprises a plunger 6, a through hole 64 used for being matched with a rod body 5 of an oil needle is axially arranged on the plunger 6, a strip-shaped groove 61 is axially arranged on the side of the through hole 64, an inner concave part 62 is arranged on the lower part of the strip-shaped groove 61, a concentric reducing clamping piece 25 is arranged at the tail end of a stay cable 26, and the tail end of the stay cable 26 penetrating through the strip-shaped groove 61 is clamped and hung on the inner concave part 62; a mounting hole 63 is formed in the top of the through hole 64, a limiting groove 65 for limiting the rod body 5 is formed in the bottom of the mounting hole 63, a limiting block 8 in the top of the rod body 5 is matched in the limiting groove 65, a pressing block 23 is further arranged in the mounting hole 63 and presses the limiting block 8, a return spring 24 is arranged above the limiting block 8, the top of the return spring 24 is connected with a top cover assembly 27, and the inhaul cable 26 penetrates through the top cover assembly 27; when the inhaul cable 26 is driven to move upwards by means of external force, the inhaul cable 26 drives the plunger 6 and the built-in part thereof to move upwards synchronously, so that the number of the micro holes 2 on the rod body 5 of the oil needle is increased and decreased until the plunger 6 abuts against the top cover component 27, and the reset spring 24 is compressed in the process; after the external force is cancelled or reduced, the reset spring 24 resets, the plunger 6, the pressing block 23, the limiting block 8 and the oil needle synchronously move downwards, and the exposure quantity of the micropores 2 on the rod body 5 of the oil needle is reduced.
Referring to fig. 11, the concave portion 62 is a notch and faces the center of the first concentric reducing connector 21 in the air inlet direction; the plunger 6 has an outer side wall formed of a curved surface and a flat surface, and an inner concave portion 62 is provided at a lower portion of the flat surface near the bottom end thereof.
In the use process, airflow sequentially flows through the inner cavity of the first concentric reducing connecting piece 21, the inner cavity of the middle section 28 of the airflow channel and the inner cavity of the second concentric reducing connecting piece 22 and then enters the engine cylinder body, the air flowing direction of the inner cavity of the first concentric reducing connecting piece 21 is perpendicular to the orientation (including the fuel oil spraying direction) of the micropores 2, the oil needle is arranged in the middle of the middle section 28 of the airflow channel, when the air flows to the positions of the micropores 2 along the outer wall of the oil needle, the fuel oil is sucked away and atomized, and in the radial section of the oil needle, the airflow flow field in the process is similar to the airflow field on the upper surface of the wing, so that the adsorption force is maximum when the air passes through the positions of the micropores 2, and the fuel oil at the micropores 2 can be easily and smoothly sucked away and atomized.
The method utilizes a plurality of precise micropores on an oil needle to replace a traditional conical oil needle to control a fuel jet structure, and combines a specific arrangement mode in the embodiment, gasoline fuel sprayed from the micropores can realize the most ideal refining precision to obtain the optimal vaporized oil mist mixed gas, the quantity of the micropores appearing (exposed) and disappearing on the oil needle is controlled in the opening and closing process of the fuel injection quantity through the up-and-down movement of a plunger, the fuel injection quantity is controlled to adapt to the opening of a throttle valve by changing the aperture size of the precise micropores, the fuel is atomized with high precision and then is sent into an engine cylinder to realize the optimal combustion state, and higher power output is obtained. In the use process, the operation and calculation of an ECU (electronic control Unit) are not needed as in an electronic fuel injection carburetor, and the fuel injection parameters are preset, so that the accelerator has very high acceleration reaction speed.
The performance ratio of the carburetor of the present embodiment was tested, and as shown in table 1, the results show that the air-fuel ratio of the carburetor of the present embodiment can be controlled to be very close to the ideal state of 14.7: 1;
TABLE 1 Zones NC250CC four-stroke Engine-carburetor air-fuel ratio test data for example 6
Example 7
A carburetor using the oil needle described in embodiment 2 or embodiment 3, specifically referring to embodiment 6.
The carburetor has the advantages that: (1) the performance of the engine can be greatly improved, the power of the engine is effectively improved, and the power output is enhanced; (2) the response capability and the response speed of the engine are greatly improved, the air-fuel ratio data can be flexibly and accurately repaired, and the emission standard can be easily met; (3) the engine can easily adapt to the altitude reaction of the engine; (4) the fuel oil atomization device is environment-friendly, the fuel oil atomization state is good, the combustion efficiency is high, CO (carbon monoxide) and HC (hydrocarbon) in exhaust gas generated by combustion in an engine cylinder are greatly reduced, and the strict national six-emission standard can be completely met; (5) the fuel requirement of each rotating speed section of the engine can be accurately controlled, so that the fuel consumption rate of the structure is greatly reduced compared with that of the traditional conical oil needle structure, and the fuel waste is avoided; (6) the air-fuel ratio is extremely close to the stoichiometric air-fuel ratio by a purely mechanical structure, and an excellent combustion state is realized.
In addition, the arrangement of the micro-holes 2 in the foregoing embodiment may also be changed according to the actual situation, for example, all the micro-holes 2 in the same row are arranged in unequal diameters and unequal intervals; alternatively, all the micropores 2 in the same row are arranged with equal diameter and unequal spacing. For the personalized product, the hole spacing can be flexibly designed according to the operation strength of a user. With the solution of embodiment 1, the oil needle is always limited in a specific direction, so that the injection direction of the fuel/oil mist can be always ensured; with the solutions according to embodiments 2, 3 and 7, the oil needle itself has a good positioning function, and the injection direction of the fuel/oil mist can be always ensured by the oil needle itself during the use process.
Claims (10)
1. The utility model provides an oil needle, is provided with cavity (4) along body of rod (5) axial including the body of rod (5) that is the cylindricality, and cavity (4) wherein one end is uncovered, the other end seals, and the interval is provided with a plurality of micropores (2) on the body of rod (5), and all micropores (2) communicate with each other its characterized in that with cavity (4): the micropores (2) are symmetrically arranged in two rows, and the connecting lines of the centers of all the micropores (2) in the same row are parallel to the axis of the rod body (5).
2. The oil needle according to claim 1, characterized in that: the micropores (2) are arranged radially.
3. The oil needle according to claim 2, characterized in that: all the micropores (2) in the same row are arranged in equal diameter and equal interval; or all the micropores (2) in the same row are arranged in a non-equal diameter and equal interval manner; or all the micropores (2) in the same row are arranged in a non-equal diameter and non-equal interval way; or all the micropores (2) in the same row are arranged in an equal diameter and unequal intervals.
4. The oil needle according to any one of claims 1 to 3, characterized in that: the outer wall of the rod body (5) is an arc surface, and when the air flow bypasses the outer wall of the rod body (5), the air flow and the part of the rod body (5) which is just contacted are used as initial points and are arranged in two rows at the top of the arc surface, wherein the micropores (2) are symmetrically arranged outside the initial points.
5. The oil needle according to claim 4, characterized in that: when the rod body (5) is a cylinder or an elliptic cylinder, the micropores (2) are respectively arranged at a 90-degree position and a 270-degree position in the radial section of the cavity (4) with the starting point being at a 0-degree position.
6. An oil injection structure using the oil needle of any one of claims 1 to 5, characterized in that: the oil mist spraying device is characterized in that the rod body (5) radially penetrates through the airflow channel (12), the lower end of the rod body (5) directly or indirectly extends into fuel oil, the top of the rod body (5) is connected with the plunger (6), the fuel oil can be sprayed out from the micropores (2) only under the action of negative pressure to form oil mist, and the spraying direction of the just sprayed oil mist is perpendicular to the axis of the airflow channel (12).
7. The oil injection structure according to claim 6, characterized in that: the axis of the rod body (5) is intersected with the axis of the airflow channel (12); the middle section of the airflow channel (12) is a small-diameter section, and the left side and the right side of the middle section are both expanding sections; when the plunger (6) moves up and down, the rod body (5) is lifted synchronously with the plunger (6); the rod body (5) stretches into a pipe cavity (10) of the connecting pipe (7), the lower end of the connecting pipe (7) stretches into fuel oil, and the rod body (5) and the connecting pipe (7) are in clearance sealing.
8. A carburetor using the needle according to any one of claims 1 to 5, wherein: the air flow channel structure comprises a shell (20), wherein an air flow channel middle section (28) is transversely arranged on the shell (20), two ends of the air flow channel middle section (28) are respectively connected with a concentric reducing connecting piece I (21) and a concentric reducing connecting piece II (22), and an air flow channel (12) is formed by the air flow channel middle section (28), a concentric reducing pipe cavity of the concentric reducing connecting piece I (21) and a pipe cavity of the concentric reducing connecting piece II (22); an air valve assembly is radially arranged at the middle section (28) of the air flow channel, an oil needle of the air valve assembly is vertically arranged and is perpendicular to and intersected with the axis of the middle section (28) of the air flow channel, the lower end of the oil needle of the air valve assembly is matched in the connecting pipe (7) in a clearance sealing mode all the time, and the lower end of the connecting pipe (7) stretches into fuel all the time.
9. A carburetor according to claim 8, wherein: the air valve assembly comprises a plunger (6), a through hole (64) used for being matched with a rod body (5) of an oil needle is axially arranged on the plunger (6), a strip-shaped groove (61) is axially arranged on the side of the through hole (64), an inner concave part (62) is arranged at the lower part of the strip-shaped groove (61), and the tail end of a guy cable (26) penetrating through the strip-shaped groove (61) is clamped and hung on the inner concave part (62); the top of the through hole (64) is provided with a mounting hole (63), the bottom of the mounting hole (63) is provided with a limiting groove (65) for limiting the rod body (5), a limiting block (8) at the top of the rod body (5) is matched in the limiting groove (65), a pressing block (23) is further arranged in the mounting hole (63) and presses the limiting block (8), a reset spring (24) is arranged above the limiting block (8), the top of the reset spring (24) is connected with a top cover assembly (27), and a stay cable (26) penetrates through the top cover assembly (27); when the inhaul cable (26) is driven to move upwards by means of external force, the inhaul cable (26) drives the plunger (6) and the built-in part thereof to move upwards synchronously, so that the number of the micro holes (2) on the rod body (5) of the oil needle is increased and decreased, the oil needle stops until the plunger (6) abuts against the top cover assembly (27), and the reset spring (24) is compressed in the process; after external force is cancelled or reduced, the reset spring (24) resets, the plunger (6), the pressing block (23), the limiting block (8) and the oil needle synchronously move downwards, and the number of the micro holes (2) on the rod body (5) of the oil needle is less and less.
10. A carburetor according to claim 9, wherein: the concave part (62) is a notch and is opposite to the central part of the concentric reducing connecting piece I (21) in the air inlet direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122456269.9U CN216044079U (en) | 2021-10-12 | 2021-10-12 | Oil needle, oil spout structure and carburetor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122456269.9U CN216044079U (en) | 2021-10-12 | 2021-10-12 | Oil needle, oil spout structure and carburetor |
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| CN216044079U true CN216044079U (en) | 2022-03-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115962069A (en) * | 2021-10-12 | 2023-04-14 | 重庆工业职业技术学院 | Carburetor |
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2021
- 2021-10-12 CN CN202122456269.9U patent/CN216044079U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115962069A (en) * | 2021-10-12 | 2023-04-14 | 重庆工业职业技术学院 | Carburetor |
| CN115962069B (en) * | 2021-10-12 | 2024-04-12 | 重庆工业职业技术学院 | Carburetor |
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