CN219587664U

CN219587664U - Enhanced atomization structure for reducing carburetor emissions

Info

Publication number: CN219587664U
Application number: CN202320845832.8U
Authority: CN
Inventors: 杨勇; 王维帅
Original assignee: Chongqing Saipu Electrical Co ltd
Current assignee: Chongqing Saipu Electrical Co ltd
Priority date: 2023-04-14
Filing date: 2023-04-14
Publication date: 2023-08-25
Anticipated expiration: 2033-04-14

Abstract

The utility model discloses a reinforced atomization structure for reducing the emission of a carburetor, which is arranged in the carburetor body, wherein the carburetor body is internally provided with an air inlet cavity, a throat and a vacuum cavity, the air inlet cavity is communicated with an air filter, the throat is positioned between the air inlet cavity and the vacuum cavity, fuel is injected into the vacuum cavity through a fuel injection point at the throat, the vacuum cavity is communicated with an air inlet manifold, and the reinforced atomization structure is used for carrying out reinforced atomization on the fuel injected by the fuel injection point. The structure of the carburetor is optimized and improved on the basis of the existing carburetor, the sprayed fuel is further atomized in a reinforcing way after the fuel injection of the fuel injection nozzle is completed, the atomization effect of the fuel is improved, the combustion efficiency of the engine is improved, the fuel economy is ensured to be fully combusted, the hydrocarbon emission is reduced, the safety of the airtight environment in working is improved, and the carburetor is more environment-friendly and energy-saving.

Description

Enhanced atomization structure for reducing carburetor emissions

Technical Field

The utility model relates to the technical field of engine parts, in particular to a reinforced atomization structure for reducing carburetor emission.

Background

A carburetor (carburetor) is a mechanical device that mixes a proportion of gasoline with air under the vacuum created by the operation of an engine. The carburetor serves as a precision mechanical device that utilizes the kinetic energy of the intake air flow to effect atomization of the fuel. The complete device comprises a starting device, an idling device, a medium-load device, a full-load device and an accelerating device. The carburetor can automatically proportion corresponding concentration according to different working state demands of the engine and output corresponding amount of mixed gas, and in order to ensure that the mixed gas is uniformly mixed, the carburetor also has the effect of atomizing fuel oil so as to ensure that the machine normally operates.

The traditional carburetor utilizes the vacuum degree of the engine and the kinetic energy of sucked air to realize the atomization of fuel, and the gasoline sprayed out by the fuel spray nozzle is not atomized more fully through other atomization structures, so that the fuel atomization is insufficient, the combustion efficiency of the engine is low, the economy is poor, the discharged tail gas has high hydrocarbon content, and great potential safety hazards exist when the sealed space is used.

Therefore, in order to solve the above problems, there is a need for a reinforced atomization structure for reducing the emission of a carburetor, which optimizes and improves the structure of the carburetor based on the existing carburetor, further enhances the atomization of the fuel sprayed out after the injection of the fuel nozzle is completed, improves the atomization effect of the fuel, firstly improves the combustion efficiency of the engine, ensures the full combustion, improves the fuel economy, reduces the hydrocarbon emission, improves the safety of the working in a closed environment, and is more environment-friendly and energy-saving.

Disclosure of Invention

Therefore, the utility model aims to overcome the defects in the prior art, provide the reinforced atomization structure for reducing the emission of the carburetor, optimize and improve the structure of the carburetor on the basis of the existing carburetor, further strengthen the atomization of the sprayed fuel after the oil injection of the oil nozzle is completed, improve the atomization effect of the fuel, firstly improve the combustion efficiency of the engine, ensure the full combustion, improve the fuel economy, reduce the emission of hydrocarbon, improve the safety of the closed environment during working, and be more environment-friendly and energy-saving.

The enhanced atomization structure for reducing the emission of the carburetor is arranged in the carburetor body, the carburetor body is internally provided with an air inlet cavity, a throat opening and a vacuum cavity, the air inlet cavity is communicated with an air filter, the throat opening is positioned between the air inlet cavity and the vacuum cavity, fuel is injected into the vacuum cavity through a fuel injection point at the throat opening, the vacuum cavity is communicated with an air inlet manifold (the fully mixed fuel and air mixture in the vacuum cavity is conveyed into an engine cylinder through the air inlet manifold to perform compression combustion work), and the enhanced atomization structure is used for enhancing atomization of the fuel injected from the fuel injection point.

Further, the enhanced atomization structure comprises an oil injection pipe and a pore plate, wherein the oil injection pipe is used for sucking fuel oil in the float chamber into the vacuum cavity, the oil injection pipe partially stretches into the throat, the pore plate is arranged at an oil outlet of the oil injection pipe, and the pore plate atomizes the fuel oil sprayed out of the oil injection pipe for the first time.

Further, a plurality of small holes for oil discharge are formed in the plate surface of the pore plate. The small holes are distributed in an annular array or in other modes, the annular array is generally adopted for improving the uniformity of oil injection, and the sum of oil outlet areas of a plurality of small holes is not smaller than a set value, so that the occurrence of overlarge oil injection pressure is avoided.

Further, the oil spray pipe stretches into a plurality of wall holes for improving oil spray atomization are formed in the pipe wall of the throat section, and the plurality of wall holes are uniformly formed along the pipe wall to reduce oil spray pressure.

Further, the enhanced atomization structure further comprises an inner throat arranged at the throat, the inner throat is tubular and is wrapped by the extending section of the oil injection pipe, two ports of the inner throat correspond to the air inlet cavity and the vacuum cavity respectively, and a plurality of atomization holes for improving fuel atomization are formed in the pipe wall of the inner throat corresponding to the oil outlet of the oil injection pipe. The convenient processing can be on the outer pipe wall of interior laryngeal opening processing locating surface to make things convenient for machine to add the trompil, processing is simple, has improved atomization effect to a great extent again, has promoted engine combustion efficiency, and has improved fuel economy.

Further, be provided with the atomizing board on the terminal surface that the interior laryngeal is close to the vacuum chamber, offer on the atomizing board and be used for improving fuel atomization atomizing reinforcing hole, from in the pipe of spout oil pipe spun fuel through orifice plate and wall hole primary atomization back blowout to interior laryngeal, enter into the vacuum chamber through the atomizing hole of interior laryngeal and atomizing board again and carry out intensive mixing with the air and form fuel air mixture, guaranteed the abundant atomizing of fuel in the very big degree to do not increase the play oil pressure of spout oil pipe, improve engine combustion efficiency.

Further, the atomization reinforcing holes comprise a central hole formed in the inner side of the surface of the atomization plate and side holes formed in the outer edge of the surface of the atomization plate, the quantity of fuel contacted with the central position of the atomization plate is larger, the central hole is formed to be larger, the sufficient oil passing area can be ensured, and the atomization plate can be an atomization net on the premise of not changing the purpose of the utility model.

Further, the aperture of the central hole is larger than that of the side holes, and the oil passing amount of the side holes is smaller, so that the aperture of the side holes is reduced a little adaptively.

The beneficial effects of the utility model are as follows: the reinforced atomization structure for reducing the emission of the carburetor disclosed by the utility model is characterized in that the structure is optimized and improved on the basis of the existing carburetor, the sprayed fuel is further reinforced and atomized after the oil injection of the oil nozzle is completed, the atomization effect of the fuel is improved, the combustion efficiency of an engine is improved, the combustion is ensured to be full, the fuel economy is improved, the hydrocarbon emission is reduced, the safety of the closed environment during working is improved, and the environment is more protected and energy is saved.

Drawings

The utility model is further described below with reference to the accompanying drawings and examples:

FIG. 1 is a schematic diagram of a first embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of a fuel injection pipe according to a first embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of FIG. 3;

FIG. 5 is a schematic view showing the structure of an orifice plate in accordance with a first embodiment of the present utility model;

FIG. 6 is a schematic diagram of a second embodiment of the present utility model;

FIG. 7 is a schematic cross-sectional view of FIG. 6;

FIG. 8 is a schematic diagram of a fuel injector according to a second embodiment of the present utility model;

FIG. 9 is a schematic cross-sectional view of FIG. 8;

FIG. 10 is a schematic diagram of a third embodiment of the present utility model;

FIG. 11 is a schematic cross-sectional view of FIG. 10;

FIG. 12 is a schematic cross-sectional view of FIG. 10;

FIG. 13 is a schematic cross-sectional view of FIG. 10;

FIG. 14 is a schematic view of a fourth embodiment of the present utility model;

FIG. 15 is a front view of FIG. 14;

FIG. 16 is a schematic cross-sectional view of FIG. 15;

FIG. 17 is a schematic cross-sectional view of FIG. 15;

FIG. 18 is a schematic view of a fifth embodiment of the present utility model;

FIG. 19 is a schematic elevational view of the structure of FIG. 18;

FIG. 20 is a schematic cross-sectional view of FIG. 19;

fig. 21 is a schematic structural view of a atomizing plate according to a fifth embodiment of the present utility model.

Detailed Description

Fig. 1 is a schematic diagram of a first embodiment of the present utility model, fig. 2 is a schematic diagram of a cross-section of fig. 1, fig. 3 is a schematic diagram of a fuel injection pipe in the first embodiment of the present utility model, fig. 4 is a schematic diagram of a cross-section of fig. 3, fig. 5 is a schematic diagram of an orifice plate in the first embodiment of the present utility model, fig. 6 is a schematic diagram of a structure of a second embodiment of the present utility model, fig. 7 is a schematic diagram of a cross-section of fig. 6, fig. 8 is a schematic diagram of a structure of a fuel injection pipe in the second embodiment of the present utility model, fig. 9 is a schematic diagram of a cross-section of fig. 8, fig. 10 is a schematic diagram of a structure of a third embodiment of the present utility model, fig. 11 is a schematic diagram of a cross-section of fig. 10, fig. 13 is a schematic diagram of a cross-section of fig. 10, fig. 14 is a schematic diagram of a structure of a fourth embodiment of the present utility model, fig. 15 is a front view of fig. 14, fig. 16 is a schematic cross-sectional structure of fig. 15, fig. 17 is a schematic cross-sectional structure of fig. 15, fig. 18 is a schematic cross-sectional structure of a fifth embodiment of the present utility model, fig. 19 is a schematic front view of fig. 18, fig. 20 is a schematic cross-sectional structure of fig. 19, fig. 21 is a schematic cross-sectional structure of a atomization plate of a fifth embodiment of the present utility model, as shown, a reinforced atomization structure for reducing carburetor emissions is provided in a carburetor body 1, the carburetor body 1 has an intake chamber 2, a throat 7 and a vacuum chamber 4, the intake chamber 2 communicates with an air cleaner, the throat 3 is located between the intake chamber 2 and the vacuum chamber 4, fuel is injected into the vacuum chamber 4 through a fuel injection point at the throat 3, the vacuum cavity 4 is communicated with an air inlet manifold (the fully mixed fuel-air mixture in the vacuum cavity 4 is conveyed into an engine cylinder through the air inlet manifold to perform compression combustion work), and the reinforced atomization structure is used for carrying out reinforced atomization on fuel sprayed from a fuel spraying point.

In this embodiment, the enhanced atomization structure includes injection pipe 5 and orifice plate 6, injection pipe 5 is used for inhaling the indoor fuel of float in vacuum chamber 4 just injection pipe 5 part stretches into in the laryngeal 3, orifice plate 6 set up in the oil-out of injection pipe 5, orifice plate 6 carries out the first atomization to injection pipe 5 spun fuel.

In this embodiment, a plurality of small holes 6a for discharging oil are formed on the plate surface of the orifice plate 6. The small holes 6a are distributed in an annular array or in other modes, in order to improve the uniformity of oil injection, the annular array is generally adopted, the sum of oil outlet areas of the small holes 6a is not smaller than a set value, and the occurrence of overlarge oil injection pressure is avoided.

In this embodiment, the wall of the oil spray pipe 5 extending into the throat 3 section is provided with a plurality of wall holes 5a for improving oil spray atomization, and a plurality of wall holes 5a are uniformly arranged along the wall of the pipe, so as to reduce oil spray pressure.

In this embodiment, the enhanced atomization structure further includes an inner throat 7 disposed at the throat 3, the inner throat 7 is a tube-shaped structure wrapped by the extending section of the oil injection tube 5, two ports of the inner throat 7 correspond to the air inlet cavity 2 and the vacuum cavity 4 respectively, and a plurality of atomization holes 7a for improving fuel atomization are formed at the tube wall of the inner throat 7 corresponding to the oil outlet of the oil injection tube 5. The convenient processing can process the locating surface on the outer pipe wall of the inner throat 7 to make things convenient for machine to add the trompil, processing is simple, has improved atomization effect to a great extent again, has promoted engine combustion efficiency, and has improved fuel economy.

In this embodiment, the inner throat 7 is close to be provided with atomization plate 8 on the terminal surface of vacuum chamber 4, offer on the atomization plate 8 and be used for improving the fuel atomization and atomize reinforcing hole, from the fuel spray 5 after the first atomization of orifice plate 6 and wall hole 5a blowout to the intraductal of inner throat 7, again enter into vacuum chamber 4 through the atomizing hole 7a of inner throat 7 and the reemulation of atomization plate 8 and carry out intensive mixing with the air and form fuel air mixture, guaranteed the abundant atomization of fuel to a great extent to do not increase the play oil pressure of fuel spray 5, improve engine combustion efficiency.

In this embodiment, the atomization enhancing hole includes a central hole 8a formed on the inner side of the plate surface of the atomization plate 8 and a side hole 8b formed on the outer edge of the plate surface of the atomization plate 8, the amount of fuel oil contacted by the central position of the atomization plate 8 is larger, the central hole 8a is formed to be larger, a sufficient oil passing area can be ensured, and the atomization plate 8 can be an atomization net without changing the purpose of the utility model.

In this embodiment, the hole diameter of the central hole 8a is larger than the hole diameter of the side hole 8b, and the oil passing amount at the position of the side hole 8b is smaller, so that the hole diameter of the side hole 8b is adaptively reduced by a little.

The reinforced atomization structure for reducing the emission of the carburetor disclosed by the utility model is characterized in that the structure is optimized and improved on the basis of the existing carburetor, and the sprayed fuel oil is subjected to reinforced atomization in the embodiment after the oil injection of the oil nozzle is completed, so that the atomization effect of the fuel oil is improved, the combustion efficiency of an engine is improved, the combustion is ensured to be full, the fuel oil economy is improved, the hydrocarbon emission is reduced, the safety of the closed environment in working is improved, and the environment is more protected.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims

1. A reinforced atomizing structure for reducing carburetor emissions, comprising: the enhanced atomization structure is arranged in the carburetor body, an air inlet cavity, a throat and a vacuum cavity are formed in the carburetor body, the air inlet cavity is communicated with the air filter, the throat is positioned between the air inlet cavity and the vacuum cavity, fuel is injected into the vacuum cavity through a fuel injection point at the throat, the vacuum cavity is communicated with the air inlet manifold, and the enhanced atomization structure is used for enhancing atomization of fuel injected from the fuel injection point.

2. The enhanced atomizing structure for reducing emissions of a carburetor of claim 1, wherein: the enhanced atomization structure comprises an oil injection pipe and an orifice plate, wherein the oil injection pipe is used for sucking fuel oil in the float chamber into the vacuum cavity, the oil injection pipe extends into the throat, and the orifice plate is arranged at an oil outlet of the oil injection pipe.

3. The enhanced atomizing structure for reducing emissions of a carburetor of claim 2, wherein: the plate surface of the pore plate is provided with a plurality of small holes for oil discharge.

4. A reinforced atomizing structure for reducing carburetor emissions as set forth in claim 3, wherein: the oil spray pipe stretches into the pipe wall of the throat section and is provided with a plurality of wall holes for improving oil spray atomization, and the wall holes are uniformly formed along the pipe wall.

5. An enhanced atomizing structure for reducing emissions in a carburetor according to any one of claims 2-4, wherein: the reinforced atomization structure further comprises an inner throat arranged at the throat, the inner throat is tubular and is wrapped on the extending section of the oil injection pipe, two ports of the inner throat correspond to the air inlet cavity and the vacuum cavity respectively, and a plurality of atomization holes for improving fuel atomization are formed in the pipe wall of the inner throat corresponding to the oil outlet of the oil injection pipe.

6. The enhanced atomizing structure for reducing emissions of a carburetor of claim 5, wherein: an atomization plate is arranged on the end face, close to the vacuum cavity, of the inner throat, and an atomization reinforcing hole for improving fuel oil atomization is formed in the atomization plate.

7. The enhanced atomizing structure for reducing emissions of a carburetor of claim 6, wherein: the atomization reinforcing holes comprise central holes formed in the inner side of the atomization plate surface and side holes formed in the outer edge of the atomization plate surface.

8. The enhanced atomizing structure for reducing emissions of a carburetor of claim 7, wherein: the aperture of the central hole is larger than that of the side holes.