Fuel supply system and main spray pipe

Abstract

The fuel oil supply system comprises a body, a mixing chamber, an oil storage chamber and an oil supply channel, the mixing chamber is arranged in the body and communicated with one end of the oil supply channel, the other end of the oil supply channel is communicated with the oil storage chamber, and the oil supply channel comprises a main metering jet, a foam pipe and the main spray pipe which are communicated in sequence. The main metering jet is communicated with the oil storage chamber, the nozzle of the main spray pipe extends to the mixing chamber, the atomization enhancing structure is arranged on the periphery of the nozzle, when fuel oil is sprayed out of the nozzle, an oil film is formed at the atomization enhancing structure, the oil film can be atomized faster during vacuum suction, and an engine is made to run more stably and smoothly.

Description

Technical Field

[0001] The utility model relates to a fuel supply system, in particular to an atomization-enhanced fuel supply system and a main nozzle. Background Art

[0002] like Figures 1 to 2 As shown, the upper portion 11 of the main nozzle 10 in the existing fuel supply system is cylindrical. When the fuel is sprayed, gravity and liquid surface tension cause it to spread evenly across the upper portion of the main nozzle and at the throat of the main body, forming an oil pocket 12 at the junction of the main nozzle and the throat of the main body. When there is little accumulation of this evenly spread fuel and the oil pocket 12 at the junction, there is essentially no atomization. However, when there is a lot of accumulation, the fuel enters the combustion chamber before it is properly atomized. This can cause unstable and choppy engine operation. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention provides a fuel supply system and a main nozzle, which solves the problem of unstable engine operation caused by the accumulation of fuel at the junction of the main nozzle and the throat of the body and the failure to atomize it.

[0004] To achieve the above-mentioned purpose, the utility model provides, on the one hand, a fuel supply system, comprising a main body, a mixing chamber, an oil storage chamber and an oil supply channel, wherein the mixing chamber is arranged in the main body and is connected to one end of the oil supply channel, and the other end of the oil supply channel is connected to the oil storage chamber, and the oil supply channel comprises a main metering orifice, a foam tube and a main nozzle which are connected in sequence, the main metering orifice is connected to the oil storage chamber, the nozzle of the main nozzle extends to the mixing chamber, and an atomization enhancement structure is arranged on the periphery of the nozzle, and an oil film is formed at the atomization enhancement structure when the fuel is sprayed out by the nozzle.

[0005] Furthermore, the atomization enhancement structure includes multiple oil film forming layers, each oil film forming layer includes an upper annular protrusion and a lower annular groove, one of the annular protrusions is connected to the nozzle, and an oil film is formed at each of the annular protrusions.

[0006] Preferably, there are two oil film forming layers.

[0007] Furthermore, the fuel supply system further includes a throttle valve, which is arranged in the mixing chamber.

[0008] Furthermore, the fuel supply system also includes a throttle shaft component and a throttle shaft mounting hole, the throttle shaft mounting hole is provided on the body, and one end of the throttle shaft component penetrates into the mixing chamber through the throttle shaft mounting hole.

[0009] Preferably, the throttle is mounted on the throttle shaft component via a throttle fastening screw.

[0010] Preferably, the other end of the throttle shaft component is engaged outside the throttle shaft mounting hole.

[0011] On the other hand, the utility model provides a main nozzle for a fuel supply system, comprising a nozzle, wherein an atomization enhancement structure is provided on the periphery of the nozzle, and an oil film is formed at the atomization enhancement structure when the fuel is sprayed out of the nozzle.

[0012] Furthermore, the atomization enhancement structure includes multiple oil film forming layers, each oil film forming layer includes an upper annular protrusion and a lower annular groove, one of the annular protrusions is connected to the nozzle, and an oil film is formed at each of the annular protrusions.

[0013] Preferably, there are two oil film forming layers.

[0014] From the above scheme, it can be seen that the advantages of the present invention are:

[0015] The utility model provides an atomization enhancement structure capable of forming an oil film on the periphery of the nozzle of the main nozzle, so that atomization can be performed faster during vacuum suction, making the engine run more stably and smoothly.

[0016] The oil film formation layer of the atomization enhancement structure of this utility model is formed. When the fuel is sprayed, the annular protrusion and annular groove are arranged on the outer periphery of the nozzle of the main nozzle, so that the fuel forms a teardrop-shaped oil film on the annular protrusion in front of the annular groove. When the width of the annular protrusion is small, a large teardrop-shaped oil film can be formed quickly, and atomization is accelerated during vacuum suction, making the engine operation more stable and smooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the main nozzle in the prior art;

[0018] Figure 2 This is a schematic diagram of the fuel forming an oil sump at the junction of the main nozzle and the throat of the main body in the prior art;

[0019] Figure 3 This is a cross-sectional view of the fuel supply system of the utility model;

[0020] Figure 4 This is the overall structural diagram of the fuel supply system of the utility model;

[0021] Figure 5 for Figure 3 Enlarged view of area A in the middle;

[0022] Figure 6 This is a structural diagram of the main nozzle of the utility model;

[0023] Wherein, the reference numerals:

[0024] 10- Main nozzle of prior art;

[0025] 11- The upper part of the main nozzle of the prior art;

[0026] 12-Oil pit;

[0027] 2-Fuel supply system;

[0028] 20-Ontology;

[0029] 21-mixing chamber;

[0030] 22-Oil storage room;

[0031] 23- oil supply channel;

[0032] 24-main metering orifice;

[0033] 25-foam tube;

[0034] 26-main nozzle;

[0035] 26a- atomization enhancement structure;

[0036] 260-nozzle;

[0037] 261-Oil film;

[0038] 262-annular protrusion;

[0039] 262a-first annular protrusion;

[0040] 262b- second annular protrusion;

[0041] 263-annular groove;

[0042] 263a-first annular groove;

[0043] 263b-second annular groove;

[0044] 27-throttle;

[0045] 28-throttle shaft component;

[0046] 29-Throttle shaft mounting hole;

[0047] 30-Throttle body fastening screw. DETAILED DESCRIPTION

[0048] The technical solution of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the claims attached to the present invention.

[0049] References in the specification to "an embodiment," "another embodiment," "this embodiment," etc., indicate that the described embodiment may include specific features, structures, or characteristics, but not every embodiment must include these specific features, structures, or characteristics. Furthermore, such references do not necessarily refer to the same embodiment. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, whether or not explicitly described, it is understood that incorporating such features, structures, or characteristics into other embodiments is within the knowledge of those skilled in the art.

[0050] Certain words are used in the specification and subsequent claims to refer to specific components or parts. It should be understood by those skilled in the art that technical users or manufacturers may refer to the same component or part with different nouns or terms. This specification and claims do not distinguish components or parts based on differences in name, but rather on differences in the functions of the components or parts. The words "include" and "comprising" mentioned throughout the specification and claims are open-ended terms and should be interpreted as "including but not limited to". In addition, the word "connect" herein includes any direct and indirect electrical connection means. Indirect electrical connection means include connection through other devices.

[0051] It should be noted that, in the description of the present invention, the terms "horizontal", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are all based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description content, and do not indicate or imply that the device or element referred to must have a specific direction, specific size, or be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0052] Please refer to Figures 3 to 6 , Figure 3 A cross-sectional view of a fuel supply system 2 (hereinafter referred to as system 2) provided in accordance with an embodiment of the present invention is shown. Figure 4 This is the overall structure diagram of the fuel supply system 2. Figure 5 for Figure 3 A magnified image of area A in the middle. Figure 6 This is a structural diagram of the main nozzle 26 provided in one embodiment of the present utility model.

[0053] The fuel supply system 2 includes a main body 20, a mixing chamber 21, an oil storage chamber 22 and an oil supply channel 23. The mixing chamber 21 is arranged in the main body 20 and is connected to one end of the oil supply channel 23. The other end of the oil supply channel 23 is connected to the oil storage chamber 22. The oil supply channel 23 includes a main metering orifice 24, a foam tube 25 and a main nozzle 26 that are connected in sequence. The main metering orifice 24 is connected to the oil storage chamber 22. The nozzle 260 of the main nozzle 26 extends into the mixing chamber 21. The outer periphery of the nozzle 260 is provided with an atomization enhancement structure 26a. When the fuel is sprayed by the nozzle 260, an oil film 261 is formed at the atomization enhancement structure 26a.

[0054] Specifically, the main nozzle 26 is installed in the foam tube 25 and locked by the main metering hole 26. During engine operation, the fuel in the oil storage chamber 22 is ejected through the main metering hole 24, the foam tube 25, and then through the main nozzle 24. It mixes with air in the mixing chamber 21 to form an oil-air mixture to supply the engine operation.

[0055] In some embodiments, the atomization enhancement structure 26a includes multiple oil film forming layers, each oil film forming layer includes an upper annular protrusion 262 and a lower annular groove 263, wherein one of the annular protrusions 262 is connected to the nozzle 260, and an oil film 261 is formed at each annular protrusion 260.

[0056] This embodiment illustrates two oil film-forming layers as an example. The corresponding annular protrusions 262 are two, namely, a first annular protrusion 262a and a second annular protrusion 262b. There are also two annular grooves 263, namely, a first annular groove 263a and a second annular groove 263b. The first annular protrusion 262a connects to the outer periphery of the nozzle 260 of the main nozzle 26. The first annular groove 263a is located between the first annular protrusion 262a and the second annular protrusion 262b. The second annular groove 263b is located below the second annular protrusion 262b. The number of oil film-forming layers is not limited to this. However, each oil film-forming layer has the same or similar structure, including an upper annular protrusion 262 and a lower annular groove 263. Preferably, the annular protrusion 262 has a relatively small width, for example, 0.4 to 0.5 mm. The small width of the annular protrusion 262 allows for the rapid formation of a large, teardrop-shaped oil film.

[0057] In actual use, when the fuel is sprayed out from the nozzle 260 of the main nozzle 26, due to the oil film forming layer provided on the outer periphery of the nozzle 260, namely the annular protrusion 262 and the annular groove 263, the fuel forms a teardrop-shaped oil film 261 at the annular protrusion 262 in front of the annular groove 263, namely a teardrop-shaped semicircular oil bag. Figure 5As shown, an oil column that can fill the annular groove 263 is formed in the annular groove 263. During vacuum atomization, the oil film 261 on the outer wall of the nozzle 260 can be quickly atomized without causing fuel to accumulate at the intersection of the main nozzle 26 and the throat of the body 20 (i.e., the intersection of the outer wall of the main nozzle 26 and the inner wall of the mixing chamber 31), making the engine run more stable and smooth.

[0058] In some embodiments, the fuel supply system 2 further includes a throttle valve 27, a throttle shaft component 28, and a throttle shaft mounting hole 29. Specifically, the throttle shaft mounting hole 29 is provided at the upper end of the body 20. One end of the throttle shaft component 28 passes through the throttle shaft mounting hole 29 and enters the mixing chamber 21. The other end of the throttle shaft component 28 engages outside the throttle shaft mounting hole 29. The throttle valve 27 is mounted on the throttle shaft component 28 via a throttle fastening screw 30 and is accommodated in the mixing chamber 21. The engine controls the opening of the throttle valve 27 via the throttle shaft component 28, thereby controlling the amount of fuel-air mixture drawn into the engine.

[0059] like Figure 6 The main nozzle 26 shown can also be used in other fuel supply systems. The present invention is described using system 2 as an example, but is not limited thereto.

[0060] In summary, the present invention utilizes an atomization-enhancing structure around the nozzle of the main nozzle, which forms an oil film. This allows for faster atomization during vacuum suction, resulting in more stable and smooth engine operation. Specifically, when fuel is sprayed, the annular protrusion and annular groove provided around the nozzle of the main nozzle create a droplet-shaped oil film on the annular protrusion in front of the annular groove. The narrow width of the annular protrusion allows for the rapid formation of a large droplet-shaped oil film, resulting in faster atomization during vacuum suction, resulting in more stable and smooth engine operation.

[0061] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, all of which fall within the scope of protection of the present invention.

Claims

1. A fuel supply system comprising a body, a mixing chamber, an oil storage chamber and an oil supply channel, wherein the mixing chamber is disposed in the body and communicates with one end of the oil supply channel, and the other end of the oil supply channel communicates with the oil storage chamber, characterized in that: The oil supply channel includes a main metering orifice, a foam tube and a main nozzle that are connected in sequence. The main metering orifice is connected to the oil storage chamber. The nozzle of the main nozzle extends to the mixing chamber. An atomization enhancement structure is provided on the periphery of the nozzle. When the fuel is sprayed out of the nozzle, an oil film is formed at the atomization enhancement structure.

2. The fuel supply system according to claim 1, characterized in that: The atomization enhancement structure includes a plurality of oil film forming layers, each of which includes an upper annular protrusion and a lower annular groove. The oil film is formed at each of the annular protrusions, and one of the annular protrusions is connected to the nozzle.

3. The fuel supply system according to claim 2, characterized in that: There are two oil film forming layers.

4. The fuel supply system according to claim 1, characterized in that: The air conditioner also includes a throttle valve, which is arranged in the mixing chamber.

5. The fuel supply system according to claim 4, characterized in that: It also includes a throttle shaft component and a throttle shaft mounting hole, wherein the throttle shaft mounting hole is provided on the body, and one end of the throttle shaft component penetrates into the mixing chamber through the throttle shaft mounting hole.

6. The fuel supply system according to claim 5, characterized in that: The throttle valve is mounted on the throttle shaft component via a throttle valve fastening screw.

7. The fuel supply system according to claim 5, characterized in that: The other end of the throttle shaft component is engaged with the outside of the throttle shaft mounting hole.

8. A main nozzle for a fuel supply system, characterized in that: The invention comprises a nozzle, an atomization enhancement structure is arranged on the periphery of the nozzle, and an oil film is formed at the atomization enhancement structure when the fuel is sprayed out from the nozzle.

9. The main nozzle according to claim 8, characterized in that: The atomization enhancement structure includes a plurality of oil film forming layers, each of which includes an upper annular protrusion and a lower annular groove. The oil film is formed at each of the annular protrusions, and one of the annular protrusions is connected to the nozzle.

10. The main nozzle according to claim 9, characterized in that: There are two oil film forming layers.

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