CN114032123A - High-proportion methanol diesel additive and using method thereof - Google Patents

Abstract

The invention discloses a high-proportion methanol diesel additive and a using method thereof, wherein the high-proportion methanol gasoline additive comprises 5-15% of water, 70-80% of pentane, 2-5% of allyl polyethylene glycol, 1-6% of fatty alcohol-polyoxyethylene ether, 0.1-0.7% of n-amyl alcohol, 0.1-0.3% of dimethoxymethane and 0.5-2% of diisopropyl ether. Through spouting the additive after will atomizing in the intake duct, make additive and methanol fuel intensive mixing, form the droplet group of methanol fuel parcel additive, after the droplet group gets into the combustion chamber intensification, the droplet group explodes a little and forms the secondary atomization, make the droplet dispersion for more tiny methanol fuel granule, make methanol fuel granule and air contact more even, when lighting, the time of methanol fuel complete combustion is shorter, the thrust that produces is bigger more frequent in the short time on the piston, thereby improve methanol fuel's engine output.

Description

High-proportion methanol diesel additive and using method thereof

Technical Field

The invention relates to vehicle fuel, in particular to a high-proportion methanol diesel additive.

Background

The methanol gasoline is a novel environment-friendly fuel prepared by national standard gasoline, methanol and an additive according to a certain volume (mass) ratio through a strict flow, is a fuel substitute for automobiles, and is an important component of new energy. Crude oil is the most major primary energy source in the world, and the essence of current energy shortage is crude oil shortage. The vehicle fuel is the main application field of crude oil and accounts for more than 70 percent of the total consumption of crude oil in the world.

Methanol gasoline is a path of replacing oil with coal, and can be used as a substitute of gasoline so as to realize partial substitution of crude oil. And the methanol gasoline has less polluting gases such as sulfur dioxide and the like discharged by gasoline, and is more environment-friendly and cleaner.

At present, the main disadvantage of methanol gasoline is that the calorific value is low, 2 liters of methanol is equivalent to 1 liter of isooctane (can be regarded as No. 100 standard gasoline), so that pure methanol fuel has the defect of slight power shortage compared with gasoline.

In a conventional engine with air intake pipe injection, fuel is injected into an air intake passage to form a mixed gas with air, and the mixed gas flows with the air and is brought into a combustion chamber to be ignited. The mass ratio of air to gasoline of a common suction pipe injection engine is about 14.7:1, namely the air and the gasoline can be fully combusted at the ratio, carbon deposition caused by too much fuel and insufficient combustion is avoided, and the phenomenon that the force for pressing a piston cannot be fully generated due to too much air is avoided. Conventional suction pipe injection engines require modification and adjustment of the fuel to air ratio to adapt to methanol fuel as compared to gasoline.

Meanwhile, how to mix the methanol fuel and the air sufficiently, further improve the combustion sufficiency and increase the power output is one of the problems to be solved urgently at present.

Disclosure of Invention

The invention aims to provide a high-proportion methanol diesel additive, wherein atomized additives are sprayed in an air inlet channel, so that the additives are fully mixed with methanol fuel to form a droplet group of the methanol fuel wrapping the additives, after the droplet group enters a combustion chamber and is heated, the droplet group is slightly exploded to form secondary atomization, so that droplets are dispersed into finer methanol fuel particles, the methanol fuel particles are more uniformly contacted with air, when the methanol fuel is ignited, the complete combustion time of the methanol fuel is shorter, the thrust generated on a piston in a short time is larger and more frequent, and the output power of an engine of the methanol fuel is improved. The invention is mainly suitable for the additive of methanol diesel oil and can also be suitable for methanol gasoline.

In order to realize the purpose of the invention, the invention adopts the following technical scheme: a high-proportion methanol diesel additive comprises 5-15% of water, 70-80% of pentane and the balance auxiliary components.

Preferably, the auxiliary component comprises 2-5% of allyl polyethylene glycol, 1-6% of fatty alcohol-polyoxyethylene ether, 0.1-0.7% of n-amyl alcohol, 0.1-0.3% of dimethoxymethane and 0.5-2% of diisopropyl ether.

The use method of the high-proportion methanol diesel additive comprises the following steps:

1) the additive is stored in the adding cavity, and the adding cavity and the oil tank are two separated containing cavities;

2) the additive adding cavity is internally connected with a pressure pump, a mixer and a pipeline, the pipeline comprises a vertical pipe, the vertical pipe is vertically arranged, and the additive is uniformly mixed by the mixer after being pressurized by the pressure pump and then moves downwards along the vertical pipe;

3) the tail end of the pipeline is provided with an emergent pipe, the emergent pipe is obliquely and upwards arranged relative to a horizontal plane, the emergent pipe is provided with a heater and an atomizing nozzle, and the additive is heated to more than 60 ℃ by the heater before reaching the atomizing nozzle;

4) the additive is heated to above 60 ℃, rapidly boils and expands, and is sprayed out from the atomizing nozzle in an accelerated manner;

5) the invention is suitable for the engine which is injected by the air suction pipe, and comprises an air inlet passage, an air inlet valve, a combustion chamber and a fuel injector; the atomizing nozzle and the fuel injector face the air inlet channel, the direction of the atomizing nozzle faces one side of the air inlet valve, and the additive forms fog drops in the air inlet channel when being sprayed out by the atomizing nozzle;

6) after being atomized, the additive is mixed with methanol gasoline sprayed by a fuel injector to form additive droplet particles, and the surfaces of the additive droplet particles are coated with the droplet groups of the fuel oil;

7) the fog drop groups enter the combustion chamber from the air inlet valve along with the air inlet passage, the temperature of the fog drop groups is rapidly raised when the fog drop groups enter the combustion chamber, the fog drop groups are rapidly expanded and vaporized to form micro explosion, and secondary atomization is carried out, so that the fog drop groups are further dispersed into finer particles.

Preferably, the opening of the fuel injector and the opening of the atomizing nozzle converge in the same area of the air inlet channel.

Preferably, the opening direction of the atomizing spray head forms an included angle of 20-30 degrees with the horizontal plane.

Preferably, the opening of the fuel injector and the opening of the atomizer face the air inlet valve, and the additive mist and the methanol fuel mist enter the combustion chamber through the air inlet valve to form a vortex air flow.

Preferably, the exit tube comprises a plurality of flow stirring plates for fully mixing the components in the additive, and the additive is fully mixed and stirred uniformly when passing through the flow stirring plates and is sprayed out from the atomizing spray head.

Preferably, each turbulence plate is obliquely arranged in the tube wall of the emergent tube, and an included angle of 30-90 degrees is reserved between adjacent turbulence plates along the axis of the emergent tube.

Preferably, the stirring plate is semicircular, two guide grooves are formed in the surface of the stirring plate, and the guide grooves extend from the middle of the stirring plate to the end part of the straight edge of the stirring plate.

Preferably, the diversion trench is an arc-shaped trench.

Compared with the prior art, the high-proportion methanol diesel additive and the use method thereof adopting the technical scheme have the following beneficial effects:

firstly, the high proportion methanol diesel fuel additive of the invention, a small amount of water and a large proportion of pentane, and the pentane can be used for assisting in increasing the heat value of the methanol fuel.

And secondly, when a small amount of water is mainly used for forming the fog drops, the surface of the water fog drops can be wrapped with pentane (due to density difference), the pentane is used as fuel for assisting combustion, and meanwhile, the pentane is also used as an organic solvent, so that the methanol fuel can be effectively attached to the outer layer of the fog drop particles to form a fog drop group of which the outer surface of the additive fog drop particles is wrapped with fuel oil.

Most of the fuel can be quickly detonated at the moment of ignition, so that the time of single full combustion is shortened, the frequency of piston motion is improved, and the output power of the engine is improved.

Drawings

FIG. 1 is a schematic diagram of the use of the high proportion methanol diesel fuel additive of the present invention.

FIG. 2 is a schematic flow diagram of a mixed airflow in the intake passage in embodiment 1.

FIG. 3 is a schematic diagram of the structure of the high-ratio methanol diesel additive injection pipeline in example 1.

Fig. 4 is a schematic structural view of an exit tube inembodiment 2.

Fig. 5 is a schematic structural view of an exit tube inembodiment 2.

Fig. 6 is a schematic structural view of an exit tube in embodiment 3.

Fig. 7 is a schematic structural view of an exit tube in embodiment 3.

Fig. 8 is a schematic structural view of the baffle plate in embodiment 3.

Reference numerals: 1. an air inlet channel; 10. an intake valve; 2. an exhaust passage; 20. an exhaust valve; 3. a spark plug; 4. a fuel injector; 5. an atomizing spray head; 50. an exit tube; 51. bending the pipe; 52. a vertical tube; 53. a heater; 54. a flow stirring plate; 540. a flow-stirring protrusion; 541. a stirring trough; 6. a piston; 7. a combustion chamber.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

Example 1:

a high-proportion methanol diesel oil additive comprises 5-15% of water, 70-80% of pentane and auxiliary components.

Referring to fig. 1 and 2, the additive in the present embodiment is mainly suitable for use in an engine with intake pipe injection to be used with methanol fuel. Because the additive contains water, layering is easily formed after standing, the water is stored at the bottommost part of the oil tank, so that the additive cannot be directly added into the oil tank, and the additive is sprayed out in a mode of additionally adding theatomizing nozzle 5 in the air inlet channel 1, so that the additive and methanol fuel are directly mixed with air in the air inlet channel 1 to form mixed air flow, and then the mixed air flow enters thecombustion chamber 7 for combustion.

The specific use steps of the additive are as follows:

1) the additive is stored in adding the intracavity, adds the chamber and is two separated appearance chambeies with the oil tank, adds the intracavity and is provided with agitating unit, stirs the additive that adds the intracavity in advance before the additive uses.

2) A pressure pump, a mixer and a pipeline are connected below the adding cavity, the pipeline comprises avertical pipe 52, thevertical pipe 52 is vertically arranged), and the additive is pressurized by the pressure pump, then is uniformly mixed by the mixer and then moves downwards along thevertical pipe 52.

3) The end of the pipeline is provided with anemergent pipe 50, theemergent pipe 50 is arranged obliquely upwards relative to the horizontal plane, and abent pipe 51 is connected between theemergent pipe 50 and avertical pipe 52, so that the flowing direction of the additive firstly flows downwards and then flows upwards.

4) Theexit tube 50 is provided withheater 53 andatomizer 5, and the additive is heated to 80 ℃ throughheater 53 earlier before reachingatomizer 5, and pentane and some auxiliary component boil fast after being heated, and under the pressurization of force (forcing) pump, the additive boils and spouts fromatomizer 5, because the slope of exit tube 50 (the contained angle is 28 degrees betweenatomizer 5's opening direction and the horizontal plane) andstandpipe 52 are vertical for the bubble of boiling can't get intostandpipe 52, has avoidedstandpipe 52 to admit air.

5) Theatomizing nozzle 5 and the fuel injector 4 are both towards the air inlet channel 1, the direction of theatomizing nozzle 5 is towards one side of the air inlet valve 10, pentane is vaporized to form bubbles after being heated and boiled, and when the bubbles carry water vapor to be sprayed out of theatomizing nozzle 5, a large amount of pentane and auxiliary components can be adhered to the surface of fog drops of water mist (if the mixture of water and pentane is not heated and directly sprayed out, independent water fog drops and pentane fog drops are easily formed, mixed fog drops are difficult to form), and the particle diameter of the fog drops is about 10 microns.

6) The atomized additive is mixed with the methanol gasoline sprayed by the fuel injector 4 to form the fogdrop groups of additive fogdrop particles, the fogdrop groups are coated with the methanol fuel oil, and the density difference exists between the pentane and the methanol, namely the density is arranged from large to small as follows: water > methanol fuel > pentane; because water and pentane form droplet particles firstly, pentane and auxiliary components are positioned on the outer surface of the water, and the density of the methanol fuel is between that of the water and the pentane, the methanol fuel can move slightly relative to the pentane under the action of gravity and tension (the methanol can move further towards the water, and the pentane can gradually flow from the middle part to the outermost surface).

7) The fog drop groups enter thecombustion chamber 7 from the air inlet valve 10 along with the air inlet channel 1, and because the temperature of the combustion chamber is extremely high, moisture in the core part of the fog drop groups is heated and then rapidly expands and vaporizes to form micro explosion, secondary atomization is generated, so that the fog drop groups are further dispersed into finer particles, the surfaces of the particles carry methanol fuel and additives, and the methanol fuel and air are mixed more uniformly.

8) The methanol fuel is ignited by the spark plug 3 and rapidly burns with the air in the combustion chamber, and the combustion and the gas expansion are completed in a very short time, so that the piston is pushed to move downwards, the time of complete combustion is further compressed, and the output power of the engine is improved.

Wherein, the auxiliary component comprises: 2-5% of allyl polyethylene glycol, 1-6% of fatty alcohol-polyoxyethylene ether, 0.1-0.7% of n-amyl alcohol, 0.1-0.3% of dimethoxymethane and 0.5-2% of diisopropyl ether.

The allyl polyethylene glycol and the fatty alcohol-polyoxyethylene ether are mutually crosslinked and can be effectively combined with pentane, the allyl polyethylene glycol and n-amyl alcohol can be fully fused with water, the fatty alcohol-polyoxyethylene ether and the dimethoxymethane are fully combined with pentane and methanol (and isooctane), and after the additive and the methanol fuel form water mist in the air inlet channel, the methanol fuel can be fully wrapped on the additive by the aid of components in the auxiliary component, so that independent mist drops formed in the air inlet channel by the methanol fuel are reduced as far as possible, and the attachment probability of the mist drops of the methanol fuel is improved.

Referring to fig. 2, the opening directions of the fuel injector 4 and theatomizer 5 converge in the same region of the intake passage 1, so that the methanol fuel droplets and the additive droplets can be sufficiently mixed to form droplet groups.

The opening of the fuel injector 4 and the opening of theatomizer 5 face the air inlet valve 10, and the additive fog drops and the methanol fuel fog drops enter thecombustion chamber 7 after passing through the air inlet valve 10 to form vortex air flow, so that fog drop groups can be uniformly distributed in thecombustion chamber 7, and the fog drop groups can be fully and uniformly mixed with air.

Example 2:

referring to fig. 4 and 5, in order to avoid uneven mixing of the components in the additive due to the difference in flow velocity between pentane and water caused by the difference in density during the pipe flow, in this embodiment, aturbulence plate 54 is additionally provided in theexit tube 5 based on embodiment 1. The additive is sufficiently mixed and stirred by the stirringplate 54 when passing through the stirringplate 54, and is sprayed from theatomizing nozzle 5.

As shown in fig. 5, each of theturbulence plates 54 is obliquely disposed in the tube wall of theexit tube 50, theturbulence plates 54 are semicircular, theturbulence plates 54 include a circular arc edge and a straight line edge, and theturbulence plates 54 include anouter end 54a (on the circular arc edge) and aninner end 54b (on the straight line edge).

Theexit tube 50 is divided into an inflow end and an outflow end, and theturbulence plate 54 is disposed obliquely with anouter end 54a near the inflow end and aninner end 54b near the outflow end, so that when the additive fluid passes through theturbulence plate 54, the fluid continuously hits theturbulence plate 54, and turbulence is formed on theturbulence plate 54 to mix the components uniformly.

And an included angle of 90 degrees is left betweenadjacent turbulence plates 54 along the axis of theexit tube 50, and when fluid passes through thenext turbulence plate 54, the flow direction changes by 90 degrees, so that the fluid is prevented from forming flow balance. The fluid is thus in a constant cycle of flow direction change → impact-flow direction change → … → impact-flow direction change → impact.

Example 3:

because thebaffle plate 54 is obliquely arranged, a large amount of fluid and gas can flow through the middle of the straight line edge, so that two ends of thebaffle plate 54b form vortexes, and the fluid at the vortexes is easy to accumulate continuously, thereby influencing the whole mixing effect.

Therefore, in order to further replace the mixing uniformity, referring to fig. 8, in this embodiment, theflow baffle block 540 is disposed on the surface of theflow stirring plate 54, theflow baffle block 540 has twoflow guiding grooves 541, theflow guiding grooves 541 extend from the middle of theflow stirring plate 54 to the end of the straight edge of theflow stirring plate 54, and theflow guiding grooves 541 are arc-shaped grooves, forming a "eight" -shaped flow guiding path.

The fluid is guided to both ends of the straight edge by theguide grooves 541 to prevent the fluid from being formed in a balanced manner, thereby preventing the generation of a vortex.

The foregoing is a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.

Claims (10)

1. A high proportion methanol diesel additive is characterized in that: comprises 5-15% of water, 70-80% of pentane and the balance of auxiliary components.

2. The high proportion methanol diesel additive according to claim 1, wherein: the auxiliary components comprise 2 to 5 percent of allyl polyethylene glycol, 1 to 6 percent of fatty alcohol-polyoxyethylene ether, 0.1 to 0.7 percent of n-amyl alcohol, 0.1 to 0.3 percent of dimethoxymethane and 0.5 to 2 percent of diisopropyl ether.

3. A method for using the high proportion methanol diesel fuel additive of any one of claims 1-2, characterized by comprising the following steps:

1) the additive is stored in the adding cavity, and the adding cavity and the oil tank are two separated containing cavities;

2) the adding cavity is internally connected with a pressure pump, a mixer and a pipeline, the pipeline comprises a vertical pipe (52), the vertical pipe (52) is vertically arranged, and the additive is uniformly mixed by the mixer after being pressurized by the pressure pump and then moves downwards along the vertical pipe (52);

3) the tail end of the pipeline is provided with an emergent pipe (50), the emergent pipe (50) is obliquely and upwards arranged relative to a horizontal plane, the emergent pipe (50) is provided with a heater (53) and an atomizing nozzle (5), and the additive is heated to more than 60 ℃ by the heater (53) before reaching the atomizing nozzle (5);

4) the additive is heated to above 60 ℃, and the additive is quickly boiled and puffed and is sprayed out from the atomizing nozzle (5) at an accelerated speed;

5) the invention is suitable for an engine adopting an air suction pipe for injection, and comprises an air inlet passage (1), an air inlet valve (10), a combustion chamber (7) and a fuel injector (4); the atomizing nozzle (5) and the fuel injector (4) face the air inlet channel (1), the direction of the atomizing nozzle (5) faces one side of the air inlet valve (10), and additive forms fog drops in the air inlet channel (1) when being sprayed out through the atomizing nozzle (5);

6) after being atomized, the additive is mixed with the methanol gasoline sprayed by the fuel injector (4) to form additive fog drop particles, and the surfaces of the additive fog drop particles are coated with fog drop groups of the fuel oil;

7) the fog drop groups enter the combustion chamber (7) from the air inlet valve (10) along with the air inlet channel (1), and because the temperature is rapidly raised after the fog drop groups enter the combustion chamber (7), the fog drop groups rapidly expand and vaporize to form micro explosion, secondary atomization occurs, and the fog drop groups are further dispersed into finer particles.

4. The use method of the high proportion methanol diesel fuel additive according to claim 3, characterized in that: the opening direction of the fuel injector (4) and the opening direction of the atomizing nozzle (5) are converged in the same area of the air inlet channel (1).

5. The use method of the high proportion methanol diesel fuel additive according to claim 3, characterized in that: the opening direction of the atomizing nozzle (5) forms an included angle of 20-30 degrees with the horizontal plane.

6. The use method of the high proportion methanol diesel fuel additive according to claim 3, characterized in that: the opening of the fuel injector (4) and the opening of the atomizing nozzle (5) face the air inlet valve (10), and the additive fog drops and the methanol fuel fog drops enter the combustion chamber (7) through the air inlet valve (10) to form vortex air flow.

7. The use method of the high proportion methanol diesel fuel additive according to claim 3, characterized in that: the exit tube (50) comprises a plurality of flow stirring plates (54) for fully mixing all components in the additive, and the additive is fully mixed and stirred uniformly when passing through the flow stirring plates (54) and is sprayed out from the atomizing spray head (5).

8. The use method of the high proportion methanol diesel fuel additive according to claim 7, characterized in that: each flow stirring plate (54) is obliquely arranged in the pipe wall of the emergent pipe (50), and an included angle of 30-90 degrees is reserved between adjacent flow stirring plates (54) along the axis of the emergent pipe (50).

9. The use method of the high proportion methanol diesel fuel additive according to claim 7, characterized in that: the flow stirring plate (54) is semicircular, two flow guide grooves are formed in the surface of the flow stirring plate (54), and the flow guide grooves extend from the middle of the flow stirring plate (54) to the end of the linear edge of the flow stirring plate (54).

10. The use method of the high proportion methanol diesel fuel additive according to claim 8, characterized in that: the diversion trench is an arc-shaped trench.

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