KR101003787B1 - Fuel pre-treatment module for internal combustion engine - Google Patents

Abstract

PURPOSE: A fuel pre-treatment module for an internal combustion engine, capable of the improvement of combustion efficiency through the preprocessing of fuel, is provided to remarkably reduce toxic gas by using a fuel activation part. CONSTITUTION: A fuel pre-treatment module for an internal combustion engine comprises a flow path, a fuel activation part(400) and an injection system. Fuel flows along the flow path. The fuel activation part is arranged in the flow path and activates the fuel. The fuel activation part comprises at least one grooves in the direction in which the fuel flows. The injection system sprays the fuel activated in the fuel activation part. The fuel activation part has a carrier, a thin-film member and an activating member.

Description

Fuel pre-treatment module for internal combustion engine

The present invention relates to a fuel pretreatment module for an internal combustion engine, and more particularly, to a fuel pretreatment module for an internal combustion engine that reduces harmful gases.

In general, internal combustion engines refer to devices that use fossil fuels to produce power. In particular, fossil fuels used in internal combustion engines are usually gasoline or diesel. At this time, when gasoline, diesel or the like is used, some of the harmful gas is contained in the exhaust gas to contaminate the environment.

Hazardous gases can be emitted in the form of carbon dioxide (CO ₂ ), sulfides and nitrides in the city, or create pollutants such as unburned hydrocarbons and fine dust, which can shorten human life through warming, environmental degradation and disease. . Therefore, reducing the harmful gas has emerged as an important problem.

In addition, even in the case of post-treatment of exhaust gas to reduce harmful gas, fossil fuel or generated electric energy may be additionally required. Therefore, in the case of an internal combustion engine using fossil fuel, problems such as fuel consumption decrease due to additional energy consumption in the post-treatment process, thereby reducing the efficiency of the internal combustion engine.

An object of the present invention is to provide an internal combustion engine that protects the environment by reducing combustion gas generated by combustion by improving combustion efficiency through pretreatment of fuel in an internal combustion engine using fossil fuel.

According to the present invention, there is provided a flow path through which fuel flows, a fuel active part disposed in the flow path to activate the fuel, and having at least one hole in a direction in which the fuel flows, and a fuel activated in the fuel active part. And an injector for injecting, wherein the fuel active part comprises an internal combustion material including a carrier formed on an outer wall of the at least one hole, a thin film member formed on one side of the support, and an active material formed on one side of the thin film member. Provides engine fuel pretreatment module.

In addition, the fuel active part may include at least one hole. At least one hole may be formed to be inclined.

The fuel pretreatment module for an internal combustion engine according to the present invention physically and chemically changes fuel. Therefore, the harmful gas contained in the exhaust gas generated during operation of the fuel pretreatment module for the internal combustion engine is reduced. In addition, the fuel pretreatment module for the internal combustion engine increases fuel efficiency by increasing the combustion efficiency of the fuel.

1 is a conceptual view showing a diesel engine as an example of an internal combustion engine having a fuel pretreatment module for an internal combustion engine according to the present invention.
FIG. 2 is a perspective view showing the fuel active part shown in FIG. 1. FIG.
3 is a cross-sectional view taken along line III-III of FIG. 2.
4 is an enlarged cross-sectional view of portion A of FIG. 3.
FIG. 5 is a graph showing a test result of toxic gas emission of a fuel pretreatment module for an internal combustion engine equipped with the fuel active part shown in FIG. 1.

An internal combustion engine using the fuel pretreatment module for an internal combustion engine according to the present invention includes all devices for generating power using fossil fuels such as turbine engines, gasoline engines, gas engines, diesel engines, and engines for thermal power plants. Hereinafter, for convenience of description, a diesel engine (W) as an embodiment of the internal combustion engine will be described.

1 is a conceptual diagram showing a diesel engine (W) as an example of an internal combustion engine having a fuel pretreatment module for an internal combustion engine according to the present invention.

Referring to FIG. 1, the diesel engine W includes a fuel tank 100 in which fuel is stored. One side of the fuel tank 100 is fastened to the fuel active unit 400 for fuel pretreatment.

On the other hand, the diesel engine (W) includes a fuel pretreatment module (not shown) for the internal combustion engine. The fuel pretreatment module for the internal combustion engine may include a flow path 800, a fuel active part 400, a filter 200, and a fuel pump 300.

The fuel filter 200 may be fastened to one side of the fuel active part 400 to remove foreign substances of fuel flowing through the holes 420.

The fuel filter 200 may be formed in various ways. The fuel filter 200 may include at least one mesh (not shown). The at least one mesh may be formed in plural. The plurality of meshes may be formed in a circular shape. The plurality of meshes may be formed in a quadrangle.

One side of the fuel filter 200 is disposed on the flow path 800 is a fuel pump 300 for increasing the pressure of the flow of fuel is disposed. The fuel pump 300 pressurizes the flow path 800 to the flowing fuel and provides the fuel active part 400.

One side of the fuel pump 300 includes a fuel activator 400 disposed on the flow path 800 to activate the flowing fuel. One side of the fuel activator 400 is disposed with the injector in which the fluid flowing in the flow path 800 is distributed and injected.

The injector includes a distributor 500 for distributing fuel introduced through the flow path 800. At least one injector 600 for injecting the dispensed fuel into the cylinder 700 is fastened to one side of the distributor 500. At least one injector 600 may be formed in plural. The cylinder 700 is disposed at one side of the plurality of injectors 600.

FIG. 2 is a perspective view showing the fuel active part 400 shown in FIG. 1. 3 is a cross-sectional view taken along line III-III of FIG. 2. 4 is an enlarged cross-sectional view of portion A of FIG. 3.

2 to 4, the fuel active part 400 includes at least one hole 420. At least one hole 420 may be formed in plural. The fuel active part 400 may be formed in a circular shape.

The plurality of holes 420 are formed in one surface of the fuel active part 400 to pass through the fuel active part 400. The plurality of holes 420 may be formed such that each hole 420 is spaced a predetermined distance apart.

Meanwhile, looking at the cross section of each hole 420, each hole 420 may be formed to be inclined. That is, looking at the flow direction of the fuel, the inclination of each hole 420 may be formed in the flow direction of the fuel. The inclination of each hole 420 may be higher than the portion where the fuel is injected, the portion where the fuel is discharged.

A carrier 411, a thin film member 412, and an active material 413 are disposed on the inner surface of each hole 420 to activate fuel.

The fuel active part 400 includes a carrier 411. The carrier 411 may include materials of various materials. The carrier 411 may include various materials such as ceramics, metals, metal oxides, polymers, activated carbon, and activated carbon fibers.

The thin film member 412 is disposed above the carrier 411. The thin film member 412 includes a piezoelectric material 412. The piezoelectric material 412 may generate electrons or holes on the surface by the pressure of the fuel flowing through the interior of the piezoelectric material 412.

At this time, the piezoelectric material 412 is preferably a material consisting of excellent physical properties and piezoelectric properties. For example, the piezoelectric material 412 may include at least one of YT (Yttrial stabilized zicomia) piezoelectric ceramic, PZT (Plumbum-Zirconate-Titanate) series piezoceramic, BST (Barium-Titanate-Batio3) series piezoceramic, and ZnO series piezoceramic It may include one.

The active material 413 is disposed above the piezoelectric material 412. The active material 413 performs a catalytic role of assisting the oxidation / reduction reaction of the fuel through the electrons emitted from the piezoelectric material 412. The active material 413 may include at least one of noble metals (not shown), noble earth metals (not shown), transition metals (not shown), and inorganic materials.

The fuel active part 400 may include a fuel active catalyst (not shown), predetermined components, and a case. The fuel active catalyst includes a carrier 411 having a structure including one or more inclined holes, a piezoelectric material 412, and an active material 413. The carrier 411 is manufactured through processing of organic materials or processing of metal materials and surface treatment or molding of ceramic materials, heat treatment and surface treatment, and thereafter dry or wet after application of piezoelectric materials using wet or dry methods. It is completed by supporting the active material by the method.

More specifically, for example, the preparation of the carrier 411 may be performed after mechanically processing an aluminum material to include a plurality of inclined holes, followed by thickening aluminum oxide on the surface through anodization. It can also be manufactured by surface treatment so that additives, sintering aids and binders can be added to powder materials such as Al2O3, ZrO2, Y2O3, and the like. It can also produce by surface-treating later. This example is intended to illustrate one embodiment, and various modifications may exist, and thus the scope of the present patent is not limited to this category. For example, in the case of the piezoelectric material 412, a ZnO thin film of (002) preferred orientation is deposited to a thickness of about 1 μm using chemical vapor deposition (CVD) as a method of applying a high-quality material. Piezoelectric properties can be expressed. Although other coating methods or materials may be used, the carrier structure, the active structure, and the structure of the membrane of the present invention may be used, and in the case of achieving a similar effect, the scope of the present invention may be included even if a change in the coating order of the membrane or insertion of additional membranes is included. Belongs to. That is, the carrier 411 includes a plurality of flow paths, and includes a piezoelectric material on the surface of the flow path, and utilizes the pressure energy applied to the piezoelectric material 412 as energy of energy (voltage, current, electrons, holes). Any application that can be included in the present invention.

Looking at the method of making the fuel active portion 400, a material for forming the carrier 411 is inserted into a storage container (not shown) protruding projections formed at a predetermined interval. An upper portion of the storage container is inserted with a pressing portion (not shown) in which a cylinder is formed to press the material.

When the material is pressed by applying a high pressure to the pressing portion, a carrier 411 is formed in which a plurality of holes 420 are formed. At this time, the piezoelectric material 412 is applied to each hole 420 formed in the carrier 411.

When the application of the piezoelectric material 412 is completed, the active material 413 is disposed on the piezoelectric material 412. Therefore, the fuel active part 400 is formed with a plurality of holes 420. The piezoelectric material 412 and the active material 413 are coated on the inner wall surface of each hole 420.

On the other hand, looking at the flow of fuel, the fuel is injected from the outside is stored in the fuel tank 100. The stored fuel is supplied to the fuel filter 200 through the holes 420 by the operation of the fuel pump 300.

As the fuel passes through the fuel filter 200, foreign substances diluted in the fuel are removed. In addition, the fuel is mechanically divided by the mesh of the fuel filter 200.

On the other hand, the fuel passing through the fuel filter 200 passes through the fuel pump 300. The fuel pump 300 increases the pressure of the fuel by applying pressure to the flowing fuel. The high pressure fuel passes through the fuel active part 400.

At this time, the fuel passes through the plurality of holes 420. The inlet portion of the plurality of holes 420 is formed larger than the outlet portion. Therefore, the pressure is further increased while the fuel passes through the plurality of holes 420.

In addition, due to the inclined holes 420 formed in the fuel active catalyst included in the fuel active unit 400, resistance to the flow of the fuel is generated, thereby increasing the pressure of the fuel. When the pressure of the fuel rises, the pressure of the fuel is applied to the piezoelectric material 412 formed on the wall surface of the flow path. When the pressure of the fuel becomes greater than the limit pressure of the piezoelectric material 412, electrons and holes are discharged from the piezoelectric material 412. Generated and provided to the surface.

The generated electrons are supplied to the surface of the piezoelectric material 412 and the active material 413 to oxidize and reduce fuel. In addition, the fuel is mechanically separated into small particles while passing through the holes 420 of the fuel active part 400. Therefore, the fuel flowing to the distributor 500 is physically and chemically activated.

The activated fuel as described above is supplied to the distributor 500. Fuel flowing into the distributor 500 is supplied to the cylinder 700 through at least one injector 600.

Therefore, when the activated fuel is used, combustion efficiency may be increased to reduce harmful gas included in exhaust gas.

FIG. 5 is a graph showing a test result of toxic gas emission of a fuel pretreatment module for an internal combustion engine equipped with the fuel activator 400 shown in FIG. 1.

Referring to FIG. 5, the fuel active part 400 is mounted and the amount of smoke generated in the exhaust gas of the diesel engine W is measured. In relation to the experiment, the experimental conditions measured the amount of smoke generated by changing the engine speed and the engine load. In relation to the measurement of the exhaust gas, the proportion of harmful gas contained in the exhaust gas was measured. In addition, in relation to the above experiment, the experimental group was equipped with the fuel active part 400, and the control group was compared with the case where the fuel active part 400 is not mounted.

Figure 5 (a) measured the emissions of harmful gases according to the engine load when the rotation speed of the diesel engine (W) is 1200rpm. Looking at the above test results, the emissions of the harmful gas increases as the engine load increases. In particular, when the engine load is more than 80, it can be seen that the emission of harmful gases increases.

As a result of the above experiment, when the engine load is 90, it is possible to prevent the generation of harmful gases. On the other hand, when the engine load is 100, it can be seen that the generation of harmful gases is similar. Therefore, it can be confirmed that the generation of harmful gas is partially reduced near the engine load of 90 people.

In addition, looking at Figure 5 (b), when the number of revolutions of the diesel engine (W) is 1800rpm it can be seen that the harmful gas generated as the engine load increases. In particular, when the engine load is 80 or more, harmful gas is released to the outside. At this time, when the fuel active unit 400 is not mounted, it can be confirmed that noxious gas is generated in a section in which the engine load is 80 or more. On the other hand, when the engine load is 80 or more when the fuel active unit 400 is installed, it can be seen that the harmful gas is significantly reduced.

Referring to Figure 5 (c), when the number of revolutions of the diesel engine (W) is 2100rpm harmful gas is generated when the engine load is more than 90. At this time, when the fuel active unit 400 is not mounted, harmful gas is generated, but when the fuel active unit 400 is mounted, it can be confirmed that the emission of harmful gas is reduced. In addition, when the engine load is 90 or more, it can be confirmed that the harmful gas is reduced.

Referring to Figure 5 (d), when the rotation speed of the diesel engine (W) is 2400rpm harmful gas is generated according to the engine load. At this time, when the fuel active unit 400 is not mounted, harmful gas is generated over the entire section. However, when the fuel active part 400 is mounted, harmful gas is generated only when the engine load is 90 or more. In addition, even in a section where the engine load is 90 or more, emissions of harmful gases are significantly reduced than in the case where the fuel active portion 400 does not exist.

Looking at the above results, the harmful gas generally occurs when the diesel engine (W) rotates at high speed and takes a lot of engine load. In addition, even when the diesel engine W rotates at a low speed, a lot of harmful gases are generated when the engine load is 90 or more.

However, the fuel pretreatment module for an internal combustion engine has an effect of significantly reducing harmful gases in a section in which harmful gases are generated. In addition, there is an effect of preventing air pollution by reducing harmful gases.

In addition, when the fuel active unit 400 is mounted or not, the smoke of the harmful exhaust gas generated under operating conditions according to the RPM and load of the diesel engine W is measured.

When the fuel active unit 400 is not installed, the smoke content in the exhaust gas increases from a load condition of about 80 to 90% or more in the range of 1200 to 2100 RPM, in order to increase the output under such a high load condition. As the amount of fuel increases, the production of unburned hydrocarbons and various salts increases.

Increasing the engine speed to 2400 RPM increases the generation of soot from about 30 to 40% load conditions, as the amount of fuel increases under these high speed and high load conditions.

When the fuel pretreatment module for the internal combustion engine was attached under the same conditions, the generation of smoke was reduced in all the experimental zones, and the width of improvement increased in the high speed zone.

That is, when the fuel pretreatment module for the internal combustion engine is attached, it is determined that the same combustion environment is provided regardless of the engine rotation speed and the load within the experimental range.

When the load is more than 90%, the amount of fuel increases very much, so that the fraction of fuel that the catalyst can process decreases, so that the soot generation tends to increase slightly.

The fuel pretreatment module for the internal combustion engine is reformed while the fuel passing through the inclined flow path is brought into contact with the surface, so that the reforming effect increases as the contact area and residence time increase. It is believed that this is because the ratio of fuel to air increases due to the lack of sufficient reforming.

In order to improve such a problem, if the catalyst is made thick and the contact area and residence time are increased, and a plurality of catalysts are connected in series, the multistage treatment method may be greatly improved. Simple application in application falls within the scope of the present invention.

According to the experimental results, the reduction effect of smoke generation through combustion promotion is obvious, and especially the reduction effect in the high speed / high load region is expected to be a great contributor to the reduction of smoke in the urban area.

Therefore, the fuel pretreatment module for the internal combustion engine has an effect of significantly reducing harmful gases in a section in which harmful gases are generated. In addition, there is an effect of preventing air pollution by reducing harmful gases.

100: fuel tank 412: piezoelectric material
200: fuel filter 413: active material
300: fuel pump 420: hole
400: fuel active part
411 carrier

Claims (13)

The flow path of fuel,
A fuel active part disposed in the flow path to activate the fuel and having at least one hole in a direction in which the fuel flows;
Injector for injecting the fuel activated in the fuel active portion,
The fuel active portion,
A carrier formed on an outer wall of the at least one hole,
A thin film member formed on one side of the carrier;
Fuel pretreatment module for an internal combustion engine comprising an active material formed on one side of the thin film member. The method according to claim 1,
A fuel pretreatment module for an internal combustion engine further comprising a fuel filter disposed in the flow path to remove foreign substances of the fuel. The method according to claim 2,
And the fuel active part is disposed between the fuel filter and the injector. The method according to claim 1,
The at least one hole is formed in plural,
And a plurality of holes are inclined at a predetermined angle in a longitudinal direction of the fuel active part. The method according to claim 4,
The plurality of holes are the fuel pretreatment module for the internal combustion engine is formed such that the inclination is formed along the traveling direction of the fuel, the portion into which the fuel is introduced is higher than the portion from which the fuel flows out. The method according to claim 1,
And the at least one hole has a larger inlet area through which fuel enters than an outlet portion through which fuel is discharged. The method according to claim 1,
A fuel pretreatment module for an internal combustion engine, wherein at least a portion of an inner wall surface of at least one hole is formed to protrude or retract. The method according to claim 1,
The carrier is a fuel pretreatment module for an internal combustion engine comprising at least one of ceramic, metal, metal oxide, polymer, activated carbon and activated carbon fiber. The method according to claim 1,
The thin film member is a fuel pretreatment module for an internal combustion engine comprising a piezoelectric material. The method according to claim 9,
The piezoelectric material is a fuel for an internal combustion engine including at least one of YSZ (Yttrial stabilized zicomia) piezoelectric ceramics, PZT (Plumbum-Zirconate-Titanate) series piezoelectric ceramics, Barium-Titanate-Batio3 series piezoelectric ceramics, and ZnO piezoelectric ceramics. Pretreatment module. The method according to claim 1,
The active material is a fuel pretreatment module for an internal combustion engine comprising at least one of precious metals, earth metals, transition metals and inorganic materials. delete The method according to claim 1,
A fuel pretreatment module for an internal combustion engine further comprising a fuel pump disposed on the flow path to increase the pressure of the fuel flowing into the fuel active portion.

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