CN111828208A - Ultrasonic atomization fuel auxiliary supply system - Google Patents
Ultrasonic atomization fuel auxiliary supply system Download PDFInfo
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- CN111828208A CN111828208A CN202010537706.7A CN202010537706A CN111828208A CN 111828208 A CN111828208 A CN 111828208A CN 202010537706 A CN202010537706 A CN 202010537706A CN 111828208 A CN111828208 A CN 111828208A
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- methanol
- fuel
- ultrasonic
- supply system
- ultrasonic atomization
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M27/00—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like
- F02M27/08—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like by sonic or ultrasonic waves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M19/00—Details, component parts, or accessories of carburettors, not provided for in, or of interest apart from, the apparatus of groups F02M1/00 - F02M17/00
- F02M19/08—Venturis
Abstract
The invention discloses an ultrasonic atomization fuel auxiliary supply system, which realizes that fresh charge entering an engine is premixed gas with a certain proportion by matching an ultrasonic atomization generator and a Venturi mixer, effectively improves the combustion thermal efficiency of the engine and reduces the harmful gas emission of the engine; the invention mainly aims at a fuel supply system of methanol which is clean fuel, methanol is atomized into methanol mist by an ultrasonic atomization unit, air and the methanol mist are premixed by matching the negative pressure adsorption principle of a Venturi tube and the regulating function of an electronic throttle valve on the flow rate of inlet air, the heat efficiency of an engine is improved by the auxiliary supply of fuel gas of a premixing part, and the emission of the engine is improved.
Description
Technical Field
The invention mainly relates to the field of engine fuel supply systems, in particular to an ultrasonic atomization fuel auxiliary supply system for a methanol automobile.
Background
With the increasingly strict requirements on energy conservation and emission reduction, the technical progress of the internal combustion engine is a necessary requirement for the development of the times. In order to adapt to increasingly strict emission regulations, the engine is generally technically improved by following two technical routes, wherein the first technical route is technically improved for the traditional engine, so that the heat efficiency of the transmission engine is improved, and the emission is reduced; the second technical route is to use cleaner fuel, improve the emission of the engine and improve the thermal efficiency of fuel.
In recent years, various clean fuels are applied to automobiles, such as new-formula gasoline, ethanol, biodiesel, natural gas methanol, hydrogen and the like, wherein methanol is a recognized clean energy source, has the characteristics of high combustion rate, good anti-knock property, low pollution, no smoke emission and the like, is a preferred option for automobile alternative fuels, and is applied to automobiles in many countries in the world.
In order to improve the combustion and emission performance of an automobile engine and promote the application step of methanol which is a clean energy source on an automobile, the engine needs to be technically modified to gradually adapt to the methanol which is a fuel, and because the difficulty in manufacturing the methanol engine again is high and time and labor are wasted, the methanol engine is modified on the basis of the traditional engine to realize the function of the methanol engine, and the aims of improving the thermal efficiency of the engine and reducing the emission of the engine are fulfilled.
Disclosure of Invention
The invention aims to provide an ultrasonic atomization fuel auxiliary supply system, which applies an ultrasonic atomization generator and a Venturi mixer to an air inlet system of an engine, so that methanol mist with a certain proportion is uniformly mixed in air entering the engine, and combustion heat efficiency of the engine is improved by providing partial premixed gas for engine combustion, thereby improving combustion and emission performance of the engine and achieving the effects of energy conservation and emission reduction of an automobile.
The technical problem is realized by the following technical scheme: an ultrasonic atomization fuel auxiliary supply system comprises a three-way structure Venturi mixer connected with an air inlet pipeline of an engine, an air filter connected with the Venturi mixer through an electronic throttle valve, and an ultrasonic atomization generator connected with the Venturi mixer through a stop valve, wherein the ultrasonic atomization generator is connected with a fuel control valve and a methanol filter in sequence and then is connected with a methanol oil tank; the ultrasonic atomization generator comprises an atomization cavity, an air outlet and a liquid inlet which are respectively arranged at the upper end and the lower end of the atomization cavity, and a float-type liquid level switch and a plurality of ultrasonic atomization units consisting of atomization sheets and sponge rods are arranged in the atomization cavity through a methanol baffle plate; the float-type liquid level switch consists of a reed switch fixed at the bottom end of a methanol separation plate and a float sleeved outside the reed switch, the methanol separation plate prevents the liquid level of methanol from generating severe fluctuation due to external vibration, an annular magnet is embedded in the float, and the reed switch is electrically connected with a fuel control valve; the venturi blender include the hybrid chamber and follow the air nozzle that the air intake duct of hybrid chamber extended toward the front side, air nozzle's internal diameter diminishes gradually, utilizes its negative pressure adsorption to inhale the absorption chamber with methyl alcohol fuel fog and realizes that the gas is premixed, the outer wall of hybrid chamber transversely is provided with the absorption chamber of taking methyl alcohol fog intake duct, air nozzle's export is located the perpendicular intersection of absorption chamber and hybrid chamber.
The ultrasonic atomization fuel auxiliary supply system is characterized in that a concentration sensor is further arranged in an atomization cavity of the ultrasonic atomization fuel auxiliary supply system.
The ultrasonic atomization fuel auxiliary supply system is characterized in that an adsorption cavity of the ultrasonic atomization fuel auxiliary supply system is provided with a methanol fog inlet end connecting flange.
The ultrasonic atomization fuel auxiliary supply system is characterized in that an air inlet end connecting flange and an air outlet end connecting flange are respectively arranged at two ends of the outer wall of the ultrasonic atomization fuel auxiliary supply system.
In the ultrasonic atomization fuel auxiliary supply system, the fuel control valve is a normally closed high-speed electric control valve. And the liquid level of the methanol in the ultrasonic atomization generator is controlled to be kept within a preset height range, so that the normal work of the methanol atomization unit is ensured.
The ultrasonic atomization fuel auxiliary supply system is characterized in that a methanol oil tank is made of stainless steel materials, and the methanol oil tank is connected with an ultrasonic atomization generator through a small-caliber stainless steel pipe.
The throttle valve of the ultrasonic atomization fuel auxiliary supply system is an electronic throttle valve, the air inlet speed of an engine can be adjusted according to the working state of the engine, the air flow rate of a nozzle is changed accordingly, and the air-fuel ratio of premixed fuel is kept in a certain range.
The ultrasonic atomized fuel auxiliary supply system is characterized in that a floater limiting sheet connected with a floater is further arranged below a reed switch.
When the engine normally works, methanol fuel enters the atomizing cavity through the methanol filter, methanol mist is formed in the atomizing cavity to overflow and disperse upwards under the action of the ultrasonic atomizing unit, the methanol mist enters the Venturi mixer under the adsorption action of a vacuum area in the mixing cavity, air-fuel mixing is realized in the mixing cavity, then mixed gas enters the engine air inlet main pipe and finally enters the air cylinder for combustion.
The invention has the following beneficial effects:
the fuel auxiliary supply system does not need to greatly change an air inlet pipeline of the engine, has a simpler structure, is easy to arrange, and can realize the premixing of partial methanol fuel and air under the condition of smaller air inlet resistance change of the engine.
2, the fuel auxiliary supply system of the invention realizes that the air inlet of the engine is premixed gas with a certain proportion, and the methanol mist generated by the ultrasonic atomization generator is more uniform, so that the mixed gas can be more uniformly mixed, thereby not only improving the combustion heat efficiency of the engine and improving the utilization rate of methanol fuel, but also improving the emission performance of the engine and reducing the emission of harmful gas, which accords with the development direction of the engine and enlarges the application range of methanol.
3, can guarantee through liquid level switch and methyl alcohol separation board that ultrasonic atomization unit is in good operating condition all the time to ultrasonic atomization generator can produce the even methyl alcohol fog of controllable fuel particle diameter size through adjustment atomizing piece vibration frequency, utilizes venturi's vacuum adsorption effect to realize the mixing of methyl alcohol fog and air, and simple high efficiency realizes that the air-fuel mixes in advance.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the ultrasonic atomization generator of the present invention;
FIG. 3 is a schematic structural view of the float-type level switch of the present invention;
FIG. 4 is a schematic diagram of the venturi mixer of the present invention.
The figures are numbered: 1-methanol filter, 2-methanol oil tank, 3-air filter, 4-throttle valve, 5-venturi mixer, 6-air inlet pipeline, 7-stop valve, 8-ultrasonic atomization generator, 9-fuel control valve, 10-methanol baffle plate, 11-atomization chamber, 12-air outlet, 13-concentration sensor, 14-atomization sheet, 15-sponge rod, 16-liquid inlet, 17-float type liquid level switch, 18-float, 19-annular magnet, 20-reed pipe, 21-float limiting sheet, 22-air inlet channel, 23-air inlet end connecting flange, 24-outer wall, 25-air nozzle, 26-mixing chamber, 27-air outlet end connecting flange, 28-adsorption chamber, 29-methanol inlet end connecting flange, and 30-methanol mist inlet channel.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without inventive changes belong to the scope of the present invention.
As shown in fig. 1 to 4, an ultrasonic atomization fuel auxiliary supply system according to an embodiment of the present invention includes a methanol tank 2, a methanol filter 1, a fuel control valve 9, an ultrasonic atomization generator 8, a stop valve 7, an air cleaner 3, an electronic throttle 4, a venturi mixer 5, an air intake duct 6, and the like. The venturi mixer 5 is a three-way structure and is respectively connected with the electronic throttle 4, the ultrasonic atomization generator 8 and the air inlet pipeline 6 of the engine, the venturi mixer 5 mainly comprises an air nozzle 25, an adsorption cavity 28, a mixing cavity 26 and the like, and methanol fuel mist is absorbed into the adsorption cavity 28 by utilizing the negative pressure adsorption effect of the venturi mixer to realize gas premixing. The methanol mist generated by the atomizing chamber 11 is sucked into the adsorption chamber 28 of the venturi mixer 5 by using the negative pressure adsorption principle of the venturi pipe, and the air and the methanol mist are mixed in the mixing chamber 26 of the venturi mixer 5.
The ultrasonic atomization generator 8 mainly comprises an air outlet 12, a liquid inlet 16, an atomization cavity 11, a plurality of ultrasonic atomization units and the like, wherein each ultrasonic atomization unit mainly comprises a cavitation atomization sheet 14, a float type liquid level switch 17, a sponge rod 15 and the like.
As shown in fig. 1, the methanol tank 2 and the fuel pipeline between the methanol tank 2 and the ultrasonic atomization generator 8 are made of stainless steel materials, the fuel pipeline is made of small-bore stainless steel pipes and is communicated with the methanol tank 2, the methanol filter 1, the fuel control valve 9 and the ultrasonic atomization generator 8, and all joints are connected by threads.
The float-type liquid level switch 17 consists of a reed switch 20 fixed at the bottom end of the methanol blocking plate 10 and a float 18 sleeved outside the reed switch 20, an annular magnet 19 is embedded in the float 18, the reed switch 20 is electrically connected with the fuel control valve 9, and a float limiting sheet 21 connected with the float 18 is further arranged below the reed switch 20; fig. 3 is a schematic structural diagram of the float type liquid level switch 17 of fig. 2 of the present invention, wherein the left side is in a conducting state and the right side is in an off state.
Specifically, as shown in fig. 1 to 3, the fuel control valve 9 is a normally closed high-speed electric control valve, and is used in cooperation with a float-type liquid level switch 17 located in the ultrasonic atomization generator 8, when a float 18 of the float-type liquid level switch 17 falls to a lowest methanol liquid level limit, the liquid level switch 17 is turned on, the fuel control valve 9 is turned on when electricity is supplied, methanol enters the atomization chamber 11, when the methanol liquid level reaches a highest limit, the liquid level switch 17 is turned off, the fuel control valve 9 is turned off when electricity is supplied, the methanol liquid level in the ultrasonic atomization generator 8 is controlled to be kept in a preset height range, normal operation of the methanol atomization unit is ensured, and a methanol blocking plate 10 is arranged to prevent the methanol liquid level from violent fluctuation due to external vibration; one end of the fuel control valve is connected with the methanol filter 1, and the other end is connected with the ultrasonic atomization generator 8.
Specifically, as shown in fig. 2, one end of the ultrasonic atomization generator 8 is connected with the fuel control valve 9 through an oil supply port 16, the other end is connected with the venturi mixer 5, and the stop valve 7 closes the methanol mist channel when the engine does not work; the ultrasonic atomization generator 8 comprises a plurality of ultrasonic atomization units, each ultrasonic atomization unit consists of an atomization sheet 14 and a sponge rod 15, the atomization sheet 14 is arranged on the methanol blocking plate 10, compared with a micropore atomization sheet, the fog generation rate is higher, and the number of the ultrasonic atomization units can be reduced; the ultrasonic atomization unit is matched with a concentration sensor 13 arranged in an atomization cavity 11 for use, the concentration sensor 13 detects the concentration of methanol mist in the atomization cavity 11, then the working state of an atomization sheet 14 is controlled through the concentration sensor 13, and the generation rate of the methanol mist is adjusted, so that the concentration of the methanol mist in the atomization cavity 11 is kept in a certain concentration range. The generation rate of the methanol mist can be adjusted by controlling the working number of the ultrasonic atomization units, so that the concentration of the methanol mist in the atomization cavity 11 is kept in a certain concentration range.
According to the invention, the concentration sensor 13 for detecting the concentration of the methanol mist is arranged in the atomizing cavity 11, the working state of the ultrasonic atomizing unit can be controlled through the concentration sensor 13, and the generation rate of the methanol mist is adjusted, so that the concentration of the methanol mist in the atomizing cavity 11 is kept at a certain concentration.
Specifically, as shown in fig. 1, the throttle valve 4 is an electronic throttle valve, which can adjust the air intake amount of the engine according to the engine operating state, and this causes the air flow velocity of the intake pipe 6 to change, and the air flow velocity of the venturi mixer 5 to change accordingly, thereby keeping the air-fuel ratio of the premixed fuel within a certain range; one end of the throttle valve 4 is connected with the air filter 3, and the other end is connected with the venturi mixer 5.
Specifically, as shown in fig. 4, the adsorption cavity 28 adsorbs the methanol mist in the atomization cavity 11 by using the negative pressure principle of the venturi tube, and the mixing of air and the methanol mist is realized in the mixing cavity 26, the mode is simple and efficient, the venturi mixer 5 is of a three-way structure and is respectively connected with the electronic throttle valve 4, the ultrasonic atomization generator 8 and the air inlet main 6 of the engine, wherein the direction of the methanol mist inlet 30 is perpendicular to the air inlet 22, and the mixing effect of air and methanol mist can be improved. The adsorption cavity 28 is provided with a methanol mist inlet end connecting flange 29, and both ends of the outer wall 24 of the adsorption cavity 28 are respectively provided with an air inlet end connecting flange 23 and an air outlet end connecting flange 27.
The specific working process of the invention is as follows: when the engine normally works, methanol fuel in the methanol fuel tank 2 enters the atomizing cavity 11 through the fuel control valve 9 after being filtered by the methanol filter 1, methanol mist is formed in the atomizing cavity 11 through the action of the atomizing sheet 14 and overflows upwards, and simultaneously enters the adsorbing cavity 28 under the adsorption action of the adsorbing cavity 28, and is mixed with air in the mixing cavity 26, and then the mixed fuel gas enters the engine air inlet pipeline 6 and finally enters the cylinder for combustion.
The electronic throttle valve 4 controls the pipeline air inlet speed according to the running working condition of the engine, and the air speed of the air nozzle 25 is changed along with the pipeline air inlet speed, so that the air-fuel mixture ratio is kept in a certain range; when the concentration of the methanol mist in the atomizing cavity 11 reaches a set upper limit value, the ultrasonic atomization generator 8 reduces the working number of the ultrasonic atomization units, otherwise, the methanol mist returns to normal.
When the floater 18 of the float-type liquid level switch 17 descends to the lowest methanol liquid level, the float-type liquid level switch is limited by the float limiting sheet 21, the float-type liquid level switch 17 is switched on, the fuel control valve 9 is switched on when electricity is supplied, methanol enters the atomizing cavity 11, when the methanol liquid level reaches the highest limiting level, the float-type liquid level switch 17 is switched off, the fuel control valve 9 is switched off when electricity is supplied, the methanol liquid level in the ultrasonic atomization generator 8 is controlled to be kept in a preset height range, and the normal work of the methanol atomization unit is ensured; the stop valve 7 closes the methanol mist passage when the engine does not work.
Finally, it should be noted that: the foregoing is a more detailed description of the invention, taken in conjunction with specific preferred embodiments thereof, and is not intended to limit the invention solely to the details thereof; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. An ultrasonic atomized fuel auxiliary supply system, characterized in that: the device comprises a Venturi mixer (5) connected with an air inlet pipeline (6) of an engine, an air filter (3) connected with the Venturi mixer (5) through an electronic throttle valve (4), and an ultrasonic atomization generator (8) connected with the Venturi mixer (5) through a stop valve (7), wherein the ultrasonic atomization generator (8) is sequentially connected with a fuel control valve (9) and a methanol filter (1) and then connected with a methanol oil tank (2); the ultrasonic atomization generator (8) comprises an atomization cavity (11), and an air outlet (12) and a liquid inlet (16) which are respectively arranged at two ends of the atomization cavity (11), wherein a float-type liquid level switch (17) and a plurality of ultrasonic atomization units consisting of atomization sheets (14) and sponge rods (15) are arranged in the atomization cavity (11) through a methanol baffle plate (10); the float-type liquid level switch (17) consists of a reed switch (20) fixed at the bottom end of the methanol blocking plate (10) and a float (18) sleeved outside the reed switch (20), an annular magnet (19) is embedded in the float (18), and the reed switch (20) is electrically connected with the fuel control valve (9); venturi mixer (5) include mixing chamber (26) and along air intake duct (22) of mixing chamber (26) toward air nozzle (25) that the front side extended, outer wall (24) of mixing chamber (26) transversely are provided with absorption chamber (28) of taking methyl alcohol fog intake duct (30), the export of air nozzle (25) is located the perpendicular junction of absorption chamber (28) and mixing chamber (26).
2. An ultrasonic atomized fuel auxiliary supply system according to claim 1, wherein the atomization chamber (11) is further provided with a concentration sensor (13).
3. An ultrasonic atomized fuel auxiliary supply system according to claim 1, wherein the adsorption chamber (28) is provided with a methanol mist inlet end connecting flange (29).
4. An ultrasonic atomizing fuel auxiliary supply system according to claim 1, characterized in that both ends of said outer wall (24) are respectively provided with an air inlet end connecting flange (23) and an air outlet end connecting flange (27).
5. An ultrasonic atomized fuel auxiliary supply system according to claim 1, wherein the fuel control valve (9) is a normally closed high-speed electric control valve.
6. The ultrasonic atomization fuel auxiliary supply system according to claim 1, characterized in that the methanol tank (2) is made of stainless steel, and the methanol tank (2) is connected with the ultrasonic atomization generator (8) through a small-bore stainless steel pipe.
7. An ultrasonic atomised fuel assist feed system as claimed in claim 1, characterised in that the throttle (4) is an electronic throttle.
8. An ultrasonic atomization fuel auxiliary supply system according to claim 1, characterized in that a float limiting piece (21) connected with a float (18) is further arranged below the reed pipe (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010537706.7A CN111828208A (en) | 2020-06-12 | 2020-06-12 | Ultrasonic atomization fuel auxiliary supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010537706.7A CN111828208A (en) | 2020-06-12 | 2020-06-12 | Ultrasonic atomization fuel auxiliary supply system |
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| CN111828208A true CN111828208A (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010537706.7A Pending CN111828208A (en) | 2020-06-12 | 2020-06-12 | Ultrasonic atomization fuel auxiliary supply system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107431A (en) * | 2021-04-14 | 2021-07-13 | 王达胜 | Low-pressure sulfur-containing natural gas pressurization recovery separation method |
| CN113178597A (en) * | 2021-04-20 | 2021-07-27 | 内蒙古民族大学 | Fuel cell using hydrogen energy source as drive and fixing structure thereof |
| CN113178596A (en) * | 2021-04-20 | 2021-07-27 | 内蒙古民族大学 | Hydrogen energy recycling cleaning hybrid power system for heavy machinery |
| CN113530727A (en) * | 2021-07-20 | 2021-10-22 | 湘潭大学 | Methanol/polymethoxy dimethyl ether ultrasonic mixed combustion supply system |
| CN114233540A (en) * | 2021-09-29 | 2022-03-25 | 潍柴动力股份有限公司 | Cold-start air inlet pipe device of methanol engine and control method thereof |
| CN114941598A (en) * | 2022-05-09 | 2022-08-26 | 潍柴动力股份有限公司 | Atomizing and spraying device of diesel/methanol engine and control method thereof |
| CN116537985A (en) * | 2023-07-06 | 2023-08-04 | 潍柴动力股份有限公司 | Engine fuel injection device and control method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107431A (en) * | 2021-04-14 | 2021-07-13 | 王达胜 | Low-pressure sulfur-containing natural gas pressurization recovery separation method |
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| CN113178596A (en) * | 2021-04-20 | 2021-07-27 | 内蒙古民族大学 | Hydrogen energy recycling cleaning hybrid power system for heavy machinery |
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| CN113530727A (en) * | 2021-07-20 | 2021-10-22 | 湘潭大学 | Methanol/polymethoxy dimethyl ether ultrasonic mixed combustion supply system |
| CN114233540A (en) * | 2021-09-29 | 2022-03-25 | 潍柴动力股份有限公司 | Cold-start air inlet pipe device of methanol engine and control method thereof |
| CN114941598A (en) * | 2022-05-09 | 2022-08-26 | 潍柴动力股份有限公司 | Atomizing and spraying device of diesel/methanol engine and control method thereof |
| CN116537985A (en) * | 2023-07-06 | 2023-08-04 | 潍柴动力股份有限公司 | Engine fuel injection device and control method |
| CN116537985B (en) * | 2023-07-06 | 2023-10-20 | 潍柴动力股份有限公司 | Engine fuel injection device and control method |
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Application publication date: 20201027 |