JPH0949465A - Method and device for reducing harmful substance in engine exhaust gas - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a harmful substance of smoke, nitrogen oxide, hydroxide, carbon monoxide, etc., in exhaust gas, by applying irradiation of ionizing radiation to fuel to radiolyze aromatic hydroxide thereafter supplying the fuel to an engine to be burned, and enhancing combustion efficiency in the engine. SOLUTION: Fuel is advanced from a fuel inlet 5 to a radiation irradiation band A1 in the upstream in a cylindrical main unit 1, to go out from a fuel outlet 7 via an intermediate flow side magnetic field band B and a radiation irradiation band A2 in the downstream. In each radiation irradiation band A1 , A2 in the upstream/downstream, fuel receives irradiation of infrared radiation and ionizing radiation generated from an radiation irradiation material 9, and also receives repeatedly self heating action by infrared radiation and radiolysis by ionizing irradiation during the time from the fuel inlet 5 to going out the fuel outlet 7, passing through each radiation irradiation material 9. Consequently, in fuel going out from the fuel outlet 7, aromatic hydroxide of high flashing point is decomposed to be decreased, and a molecule is supplied in a fine pulverized condition to an engine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for reducing harmful substances in engine exhaust gas and a device for reducing harmful substances in engine exhaust gas.

[0002]

Exhaust gas emitted from automobile engines contains a large amount of harmful substances such as black smoke, nitrogen oxides, hydrocarbons and carbon monoxide. Material is becoming a problem as one of the major causes of destroying the natural environment of the earth. In addition, the automobile nitrogen oxides reduction law is enforced for the purpose of suppressing the harmful substances of this exhaust gas.

As measures for removing this harmful substance, conventionally, in addition to the development and improvement of the engine, for example, a harmful substance reducing device using far infrared rays has been proposed. This device is provided with a plurality of far-infrared ray irradiating body layers each filled with a granular far-infrared ray irradiating body and a magnet layer inside a tubular body, and a fuel tank and an engine are provided regardless of whether the engine is a gasoline engine or a diesel engine. It is used by interposing a fuel supply system that connects with.

When the fuel passes through the cylindrical body, the far infrared rays emitted from the granular far infrared ray irradiating body and the magnetic field of the magnet layer activate the molecules of the fuel, and the combustion efficiency in the engine is increased. Greatly improved the black smoke in the exhaust gas,
It aims to reduce harmful substances such as nitrogen oxides, hydrocarbons, and carbon monoxide while improving fuel efficiency.

[0005]

This device has the advantage that it can be easily adopted in existing automobiles that are already in use and can comply with the regulations of the automobile nitrogen oxides reduction law. However, the conventional device has the following problems. That is, when the fuel passes through the far infrared ray irradiator layer, the far infrared ray generated from the far infrared ray irradiator irradiates the fuel, so that the fuel can be activated by the self-heating action of the far infrared ray and the molecules can be differentiated. Aromatic hydrocarbons with a high flash point cannot be decomposed. Therefore, there is a limit to improving the combustion efficiency of fuel in the engine.

For example, when the fuel is light oil, alkane (single bond saturated chain hydrocarbon), olefin (double bond unsaturated chain hydrocarbon), and aromatic hydrocarbon (unsaturated hydrocarbon having a benzene ring) ) Content ratio is about 7: 1: 2. The absorption wavelength of each component is 7 for alkanes.
μ, olefin 10 to 15 μ, aromatic hydrocarbon 11
~ 15μ.

Therefore, when the light oil is irradiated with far-infrared rays corresponding to the absorption wavelength of each component, the far-infrared rays are absorbed in each component of the light oil and the molecules constituting each component of the light oil resonate.
Since it causes resonance motion, the gas oil can be differentiated into fine molecules by the self-heating phenomenon at that time.

However, the flash point of each component of light oil increases in the order of alkane, olefin, and aromatic hydrocarbon, and the more aromatic hydrocarbon component is, the more difficult it is to combust in the engine. Therefore, even if light oil is irradiated with far infrared rays and the molecule is differentiated by its self-heating phenomenon, as long as the content of aromatic hydrocarbons having a high flash point in the light oil is still around 20%, It has a drawback that combustion efficiency is poor, harmful substances such as black smoke, nitrogen oxides, hydrocarbons, carbon monoxide, etc. in exhaust gas cannot be sufficiently reduced, and fuel efficiency is deteriorated.

In view of such conventional problems, the present invention reduces the content of aromatic hydrocarbons in the fuel by radiation decomposition to improve the combustion efficiency of the fuel in the engine and to reduce the black in the exhaust gas. An object of the present invention is to provide a method for reducing harmful substances in engine exhaust gas and a device for reducing harmful substances in engine exhaust gas, which are capable of reducing harmful substances such as smoke, nitrogen oxides, hydrocarbons and carbon monoxide.

[0010]

According to a first aspect of the present invention, a fuel is irradiated with ionizing radiation to radiolytically decompose aromatic hydrocarbons in the fuel, and then the fuel is supplied to an engine for combustion. It is what makes me.

According to a second aspect of the present invention, in the invention according to the first aspect, the fuel is irradiated with far infrared rays corresponding to the absorption wavelength of the aromatic hydrocarbon, and the aromatic carbonization is performed. The heat generated by the self-heating effect of hydrogen activates the molecules of aromatic hydrocarbons, and the aromatic hydrocarbons are decomposed by radiolysis by ionizing radiation.

According to a third aspect of the present invention, a radiation irradiator layer in which a granular radiation irradiator 9 is filled inside a cylindrical body 1 having a fuel inlet 5 at one end and a fuel outlet 7 at the other end 2
Is provided, and the radiation irradiator 9
In the device for reducing harmful substances in engine exhaust gas, which is adapted to irradiate radiation to activate fuel, an ionizing radiation irradiating body for generating and irradiating ionizing radiation is provided as the radiation irradiating body 9.

According to a fourth aspect of the present invention, in the invention of the third aspect, the radiation irradiating body layer 2 is provided with a far infrared irradiating body 9 for generating and irradiating far infrared rays.

According to a fifth aspect of the present invention, in the invention according to the third or fourth aspect, as the radiation irradiating body 9, an irradiating body for generating and irradiating far infrared rays and ionizing radiation is provided.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 8 illustrate a first embodiment of the present invention. As shown in FIGS. 1 to 3, this harmful exhaust gas reducing apparatus has radiation irradiation zones A ₁ and A ₂ on the upstream side and the downstream side inside the cylindrical body 1, and the radiation irradiation zones A ₁ and A _{2 respectively.}
Magnetic field bands B are provided on the middle stream side of the space. Each of the radiation irradiation zones A ₁ and A ₂ is composed of a plurality of, for example, three radiation irradiation body layers 2, and the magnetic field band B is composed of a plurality of, for example, three magnet layers 3.
A space 4 is provided between the layers of the radiation irradiator layer 2 and the magnet layer 3.
Are formed respectively.

The tubular main body 1 is made of a cylindrical stainless steel pipe or the like. One end side of the tubular main body 1 is closed by a lid 6 having a fuel inlet 5 in the central portion, and the other end side is provided with an upper fuel side. It is closed by a lid 8 having an outlet 7. Each radiation irradiator layer 2 is formed by filling a large number of granular radiation irradiators 9 such as ceramic particles. Partition plates 10 are provided on both upstream and downstream sides of each radiation irradiation body 9, and vacant chambers 4 are formed on both upstream and downstream sides of the radiation irradiation body 9 via each partition plate 10. .

The radiation irradiator 9 is for generating far infrared rays and ionizing radiation, and for irradiating the far infrared rays and ionizing radiation to the fuel passing through the inside of the cylindrical main body 1. , A ceramic produced by using a radioactive rare earth ore, a far-infrared ray-irradiated ore, and a suitable binder as raw materials, and pulverizing them, kneading them, granulating them, drying them, firing them, and polishing them into spherical or other granular materials. Granules are used.

The radiation irradiator 9 generates far-infrared rays and ionizing radiation to irradiate the fuel, heats the fuel by the self-heating action of the far-infrared rays, and excites the ionizing radiation and inelastically scatters the ionized fuel. Is to be decomposed by radiation. The ionizing radiation includes X-rays, α-rays, β-rays,
Although there are γ-rays and the like, the largest ionization is α-rays, and β-rays and γ-rays become smaller in this order. In addition, the dose of ionizing radiation is so small that it does not affect the human body.

As shown in FIGS. 4 and 5, each partition plate 10 is a disk-shaped member formed of a synthetic resin material having oil resistance and heat resistance, and penetrates in the plate thickness direction of the partition plate 10. A through hole 13 for communicating the upstream side and the downstream side of the partition plate 10 is formed, and a V-shaped peripheral groove 11 is formed on the outer periphery, and a seal ring 12 is fitted into the peripheral groove 11. There is. The partition plate 10 is fitted in the tubular body 1 via the seal ring 12. The through holes 13 may have any of the elliptical shape shown in FIG. 6A, the rectangular shape shown in FIG. 6B, the three circular shapes shown in FIG. The shape does not matter as long as the body 9 does not pass through.

The seal ring 12 is made of a synthetic resin material having oil resistance, heat resistance and appropriate elasticity, and has a circular cross section. The through hole 13 of each partition plate 10 is located on the lower side of the partition plate 10 on the upstream side of the radiation irradiation body 9,
Further, the positions of the through holes 13 are upside down in the partition plate 10 on the upstream and downstream sides of the radiation irradiation body 9 so that the partition plate 10 on the downstream side of the radiation irradiation body 9 is located on the upper side thereof.

Each magnet layer 3 is a magnet plate that also serves as a partition plate.
It is composed of 14. The magnet plate 14 is in the shape of a disk having a plate thickness equal to or slightly smaller than that of the partition plate 10. The magnet plate 14 also has a plate thickness as shown in (A) and (B) of FIG. Through holes 15 are formed so as to penetrate the magnet plate 14 in the plate thickness direction so as to connect the upstream side and the downstream side of the magnet plate 14, respectively. In addition,
The shape of the through hole 15 of the magnet plate 14 does not matter.

As shown in FIG. 8, each magnet plate 14 is magnetized so that its upstream side and downstream side have different magnetic poles.
For example, the magnet plates 14 are magnetized so that the N pole and the S pole face each other on both sides of the vacant chamber 4, and the N pole and the S pole are alternately arranged in the longitudinal direction of the cylindrical main body 1. There is. Each magnet plate 14 has a certain interval between the partition plate 10 at the downstream end of the upstream region of the tubular body 1 and the partition plate 10 at the upstream end of the downstream region with a retaining ring 16 interposed in the upstream and downstream directions. Are fitted together. Each magnet plate 14 is fitted into the cylindrical main body 1 so that the through holes 13 are alternately located on the upper and lower sides. Therefore, in each empty chamber 4 in the middle flow region, the fuel meanders up and down, and the fuel flows from the upstream side to the downstream side. It is supposed to flow.

Each of the empty chambers 4 except the empty space 4 on the downstream end side of the cylindrical main body 1 is a space corresponding to the width of the retaining ring 16, and the empty space on the downstream end side of the cylindrical main body 1. 4 is the irradiation body
The space is about the same as the volume of 9. When manufacturing this device, for example, the lid 6 on the fuel inlet 5 side is fixedly placed on the tubular main body 1, and each holding ring 16, the partition plate 10, the radiation plate from the other end side of the tubular main body 1. The irradiator 9 and the magnet plate 14 are sequentially inserted and fitted. Then, finally, the lid body 8 having the fuel outlet 7 is fixed to the other end side of the tubular main body 1.

When inserting each partition plate 10 and magnet plate 14,
The through holes 13 are fitted while sequentially changing their directions so that the through holes 13 are alternately located on the upper and lower sides. Therefore, as the partition plate 10 and the magnet plate 14, one type having the same shape may be prepared.

Since each partition plate 10 and magnet plate 14 are held by a pair of retaining rings 16 fitted to the tubular body 1 on both sides in the plate thickness direction, the partition plate 10 inside the tubular body 1 is retained. ,
The fall of the magnet plate 14 can be reliably prevented. For this reason, the holding ring 16, the partition plate 10, and the magnet plate 14 are inserted from the end side of the tubular main body 1.
Since it is possible to easily assemble the partition plates 10 and the magnet plates 14 at a constant interval by simply inserting them, the workability during assembly is very good.

When using this device, the tubular body 1
The fuel inlet 5 is connected to the fuel tank side of the engine fuel supply system, and the fuel outlet 7 is connected to the carburetor or feed pump side. Then, the fuel is supplied from the fuel tank to the engine through this device and burned in the engine.

The fuel enters the irradiation zone A ₁ on the upstream side of the cylindrical body 1 from the fuel inlet 5, the magnetic field band B middle side from the irradiation zone A ₁ in the upstream, downstream of the irradiation zone A Go out through fuel exit 7 via ₂ . Then, the fuel is repeatedly subjected to self-heating action by far infrared rays and radiolysis by ionizing radiation in each of the radiation irradiation zones A ₁ and A ₂ , and is purified by the magnetic force of the magnetic field in the magnetic field zone B 2.

That is, as shown in FIGS. 2 and 4, the fuel first enters the first empty chamber 4 in the radiation irradiation zone A ₁ on the upstream side, and descends in the first empty chamber 4. Then, the first radiation irradiator layer is passed through the through hole 13 on the lower side of the partition plate 10.
Go into 2 And, this first radiation irradiator layer 2
The fuel that has entered the inside is irradiated with far infrared rays and ionizing radiation generated from the radiation irradiator 9, and is activated and radiolytically decomposed by the action of the far infrared rays and ionizing radiation.

Since the partition plate 10 on the downstream side of the first radiation irradiator layer 2 has a through hole 13 on the upper side thereof, the fuel in the first radiation irradiator layer 2 has an upper portion thereof. It flows out from the through hole 13 on the side to the second vacant chamber 4. Therefore,
In the first radiation irradiator layer 2, the fuel flows from the lower part on the upstream side to the upper part on the downstream side while passing through the gaps between the large number of granular radiation irradiators 9. In the second radiation irradiating body layer 2, it flows evenly and substantially evenly over the whole, and far infrared rays and ionizing radiation can be effectively irradiated from the respective radiation irradiating bodies 9 to the fuel.

In particular, the partition plate 10 on the downstream side of the first radiation irradiator layer 2 has a through hole 13 on the upper side thereof, and the fuel passing through the first radiation irradiator layer 2 is placed above the partition plate 10. Since it flows from the side to the next second empty chamber 4, even if air bubbles such as air are mixed in the fuel, the bubbles pass through the through hole 13 of the partition plate 10 and the second empty chamber. Flows into chamber 4. Therefore, as compared with the case where the through hole 13 is provided on the lower side of the partition plate 10 on the downstream side of the first radiation irradiating body layer 2, the occurrence of air pockets in the radiation irradiating body layer 2 can be reduced.
As a result, when the fuel passes through the radiation irradiator layer 2, the whole of the many granular radiation irradiators 9 is filled with the fuel, and the whole of the radiation irradiator 9 effectively separates the fuel from the fuel. Infrared and ionizing radiation can be applied.

The fuel that has passed through the first radiation irradiator layer 2 passes through the through hole 13 on the upper side of the partition plate 10 to the second vacant chamber.
After entering 4, the partition plate 10 descends in the second empty space 4 and is located downstream of the second empty space 4.
Through the through hole 13 on the lower side of the second irradiation layer 2
It flows in from the lower side. In this second chamber 4, the fuel drops once and then the partition plate on the downstream side
Since it flows into the second radiation irradiator 9 through the through hole 13 on the lower side of 10, if there is air bubble in the fuel, a part of the air will be contained in this second vacant chamber 4. Air accumulates in the upper part and accumulates.

In the same manner, the fuel successively passes through the radiation irradiating body layers 2 and the vacant chambers 4 in the upstream region. Then, each radiation irradiation body layer 2 in the radiation irradiation zone A ₁ in this upstream region
When the fuel that has passed through 4 enters the fourth chamber 4 in the magnetic field band B in the middle flow region, the fuel descends in the fourth chamber 4 and then, as shown in FIG. The fifth vacant chamber through the lower side through hole 15 of the magnet plate 14 also serving as the partition plate on the downstream side.
4, then rises in the fifth chamber 4 and enters the sixth chamber 4 through the through hole 15 in the upper part of the magnet plate 14 on the downstream side.

That is, in this middle stream region, the respective empty chambers 4 formed between the magnet plates 14 also serving as the partition plates alternately meander vertically and flow toward the downstream side. Then, while passing through this middle flow region, the fuel is activated by the magnetic action under the influence of the magnetic fields of the magnetic poles on both sides of each magnet plate 14. In each of the empty chambers 4, in the empty chamber 4 in which the fuel flows as a downward flow, the bubbles in the fuel are sequentially removed, and the air bubbles are accumulated on the upper side thereof.

The fuel that has passed through each magnet layer 3 in the magnetic field band B in the middle flow region sequentially passes through each radiation irradiator layer 2 and the vacant chamber 4 in the radiation irradiation band A ₂ in the downstream region, and then the radiation in the upstream region. As in the case of the irradiation zone A ₁ , it is irradiated with far infrared rays and ionizing radiation, and is further activated and radiolyzed.

Since ionizing radiation and far-infrared rays are generated from the radiation irradiating body 9 when passing through each radiation irradiating body layer 2, the ionizing radiation and far-infrared rays irradiate the fuel, The fuel can be activated by decomposing the fuel by ionizing radiation and by the far infrared rays.

For example, when the fuel is light oil, alkane (single bond saturated chain hydrocarbon) 70%, olefin (double bond unsaturated chain hydrocarbon) 10%, aromatic hydrocarbon (benzene ring) Is 20%.
The absorption wavelength of each component is 7 μ for alkane, 10 to 15 μ for olefin, and 11 to 15 for aromatic hydrocarbon.
μ.

Therefore, the far-infrared rays of about 5 to 15 μ corresponding to the absorption wavelength of each line segment of light oil are generated by the radiation irradiator 9, and the far-infrared rays are irradiated to the light oil. Then, the far-infrared rays generated from the radiation irradiator 9 are absorbed in each component of the gas oil, and the molecules constituting each component of the gas oil resonate and resonate, so that each molecule is activated and actively activated. Collide violently. Therefore, each molecule radiates the increased energy by heat, and each component of light oil is differentiated into fine molecules by its self-heating phenomenon.

However, the flash point of each component of light oil is higher in the order of alkane, olefin, and aromatic hydrocarbon, and the more aromatic hydrocarbon component is, the more difficult it is to burn in the engine. The fuel efficiency of the engine becomes poor. For this reason,
Even if light oil is irradiated with far-infrared rays and molecules are differentiated by its self-heating phenomenon, as long as the content of aromatic hydrocarbons with a high flash point is still around 20% in light oil, black smoke is prevented and fuel consumption is reduced. There is naturally a limit to improving.

Therefore, the light oil is irradiated with the ionizing radiation generated from the radiation irradiator 9 to generate inelastic scattering of ionization and excitation, and the light oil is decomposed by radiation. That is, this radiolysis is caused by inelastic scattering of ionization or excitation, which causes a chemical reaction due to C—C bond breakage or C—H bond breakage, and proceeds by the reaction of the resulting radicals. Along with this radiolysis, aromatic hydrocarbons (unsaturated hydrocarbons having a benzene ring) in light oil change to chain hydrocarbons with a low flash point. It is possible to improve the fuel efficiency and the black smoke by improving the combustion efficiency in the engine by decreasing the ratio of.

On the other hand, not only the ionizing radiation is radiated from the radiation irradiator 9, but far infrared rays simultaneously generated from the radiation irradiator 9 are also radiated to the light oil to accelerate the radiolysis of aromatic hydrocarbons in the light oil. Make it easier. That is, the radiation irradiator 9 generates far infrared rays of 10 μ or more corresponding to the absorption wavelength of aromatic hydrocarbons at room temperature and irradiates light oil with the far infrared rays of 10 μm or more to remove the molecules of the aromatic hydrocarbon. When activated, the aromatic hydrocarbons generate heat and heat by a self-heating action, and make the aromatic hydrocarbons easily react with ionizing radiation. Therefore, it is possible to promote the radiolysis when the light oil is irradiated with the ionizing radiation.

When ionizing radiation is irradiated from the radiation irradiator 9, energy is lost due to ionization, inelastic scattering of excitation, etc., but the energy eventually becomes thermal energy. Besides decomposing into hydrocarbons,
Each molecule of light oil is further differentiated, and the combustion efficiency in the engine is further improved.

In this way, the aromatic hydrocarbons in the fuel are chain-chain carbonized by alternately passing the empty space 4 and the radiation irradiation body 9 tank three times in the radiation irradiation zone A ₁ on the upstream side of the cylindrical main body 1. While decomposing into hydrogen, the molecules are differentiated, and the air in the fuel is removed and stored in the air pool above each vacant chamber 4. Then, the fuel that has passed through the radiation irradiation zone A ₁ on the upstream side moves up and down the vacant chambers 4 along the magnet layer 3 constituted by the magnet plates 14 of the magnetic field zone B on the middle stream side of the tubular body 1. The magnetic plate 14 is passed through the magnetic field while meandering in a zigzag shape. Therefore, the molecules of the fuel can be activated by the magnetic force of the magnetic field of the magnet layer 3, and the dirt attached to the radiation irradiator 9 can be removed by this activation.
9. The effect of the magnet plate 14 can be maintained for a long time.

Further, the fuel passes along the magnet layers 3 constituted by the magnet plates 14 while zigzag vertically in the respective cavities 4, so that a sufficient fuel flow path can be secured and the tubular shape can be obtained. The main body 1 can shorten the length of the middle-flow region, in particular, to reduce the size of the main body 1, while increasing the time for the fuel to pass through each magnetic field. Further, in the downward flow chamber 4 in which the fuel flows downward, the air in the fuel can be trapped in the air reservoir.

The fuel that has passed through the magnetic field zone B passes through the empty space 4 and the radiation irradiator 9 of the downstream side radiation irradiation zone A ₂ alternately and when it passes through the upstream side radiation irradiation zone A _1. The same effect is received. Therefore, as the fuel passes through each radiation irradiator 9 between the fuel inlet 5 and the fuel outlet 7 of the tubular body 1, the self-heating effect by far infrared rays and the radiolytic decomposition by ionizing radiation occur. Receive repeatedly.

Therefore, the fuel discharged from the fuel outlet 7 of the tubular body 1 is reduced by the decomposition of aromatic hydrocarbons having a high flash point, and the molecule of the fuel is differentiated. Since the fuel of the state is supplied to the engine,
The combustion efficiency in the engine is significantly improved, and the generation of black smoke and carbon monoxide can be reduced.

FIG. 9 illustrates a second embodiment of the present invention, in which three first to third radiation irradiation zones A ₁ , A ₂ and A ₃ are provided from the upstream side to the downstream side of the cylindrical body 1. , Each radiation irradiation zone A ₁ , A
Magnetic field bands B ₁ and B _{2 are} provided between ₂ and A ₃ . Each radiation irradiation zone A ₁ , A ₂ , A ₃ has two radiation irradiation layer 2 and each magnetic field zone B ₁ , B ₂ has 5 magnet layers 3, respectively. A space 4 is provided between the magnet layer 3 and the magnet layer 3.
In the second embodiment, the same operation as in the first embodiment is performed,
Similar effects can be obtained.

FIG. 10 illustrates a third embodiment of the present invention,
The magnetic field band B is provided in a range of about 1/3 on the upstream side of the cylindrical main body 1, and the radiation irradiation band A is provided on the remaining 2/3 on the downstream side. The magnetic field band B has 10 magnet layers 3 and the radiation irradiation band A has 6 radiation irradiation body layers 2, and a vacant chamber 4 is provided between each of the magnet layers 3 and radiation irradiation body layers 2. Has been. Also in this third embodiment, the same operation and the same effect as those of the first embodiment can be obtained.

FIG. 11 illustrates a fourth embodiment of the present invention,
Two devices of the third embodiment are prepared, and these two devices are arranged in parallel and connected in series by a connecting pipe. In the case of a large engine having a large displacement, two devices may be connected in series and used as shown in the fourth embodiment. As described above, each embodiment has been described.
The present invention is not limited to these.

For example, the radiation irradiation zone in the cylindrical main body 1
The arrangement of A and the magnetic field band B is not limited to each embodiment. For example, the radiation irradiation band A may be divided into four, and the magnetic field band B may be arranged between the respective radiation irradiation bands A.
The number of the radiation irradiator layers 2 in each radiation irradiation zone A and the number of the magnet layers 3 in the magnetic field zone B are 6 in the former and 10 in the latter, but the decomposition of aromatic hydrocarbons in the fuel is performed. If stains can be removed, the number can be freely selected and determined.

Further, in the fourth embodiment, two devices of the third embodiment are connected in series, but two devices of the first or second embodiment may be connected in series. Alternatively, two devices according to different embodiments may be connected in series. Also 2
When connecting two devices in series, the flow velocity of fuel in the tubular body 1 will be faster for large engines that consume a lot of fuel, but two devices should be connected in parallel to reduce the flow velocity. You can

Further, in each of the embodiments, the radiation irradiator 9 which generates both far infrared rays and ionizing radiation is used, but the far infrared irradiator and the ionizing radiation irradiator may be provided separately. In addition, since ionizing radiation also has the effect of finally becoming thermal energy to heat and activate each molecule of the fuel, irradiation of far infrared rays may be omitted.

In addition, although light oil is used as an example of fuel in the embodiment, fuel other than light oil, such as gasoline, can be similarly used. This device can be adopted not only for automobile engines but also for stationary engines such as for marine engines and generators.

[0053]

According to the first aspect of the present invention, the fuel is irradiated with ionizing radiation to radiolytically decompose the aromatic hydrocarbons of the fuel, and then the fuel is supplied to the engine for combustion. The content of aromatic hydrocarbons in fuel can be reduced by radiolysis. Therefore, the combustion efficiency of fuel in the engine can be improved, and harmful substances such as black smoke, nitrogen oxides, hydrocarbons, carbon monoxide, etc. in the exhaust gas can be reduced.

According to the present invention of claim 2, in the invention of claim 1, the fuel is irradiated with far-infrared rays corresponding to the absorption wavelength of the aromatic hydrocarbon in the fuel, and the fragrance is obtained. The aromatic hydrocarbon molecules are activated by the heat generated by the self-heating effect of the group hydrocarbon, and the aromatic hydrocarbon is decomposed by the radiolysis by the ionizing radiation. Therefore, the radiolysis of the aromatic hydrocarbon can be easily promoted.

According to the present invention as set forth in claim 3, the tubular body 1 is provided with the fuel inlet 5 at one end and the fuel outlet 7 at the other end.
An engine in which a radiation irradiator layer 2 filled with a granular radiation irradiator 9 is provided in the interior of the cylinder to irradiate the fuel passing through the cylindrical main body 1 with the radiation irradiator 9 to activate the fuel In the device for reducing harmful substances in exhaust gas, an ionizing radiation irradiation body that generates and irradiates ionizing radiation is provided as the radiation irradiation body 9, so the aromatic hydrocarbons in the fuel are decomposed by radiation to reduce the content as much as possible. Can be reduced. Therefore, the combustion efficiency of the fuel in the engine can be improved, and harmful substances such as black smoke, nitrogen oxides, hydrocarbons, carbon monoxide in the exhaust gas can be reduced, and the system is simple and easy to implement. it can.

According to the present invention described in claim 4, in the invention described in claim 3, since the far-infrared irradiation body 9 for generating and irradiating far-infrared rays is provided in the radiation irradiation body layer 2, The molecules of aromatic hydrocarbons can be activated by the self-heating effect of infrared irradiation, and the radiolysis of aromatic hydrocarbons can be easily promoted.

According to the present invention of claim 5, in the invention of claim 3 or 4, the radiation irradiating body 9 is provided with an irradiating body for generating and irradiating far infrared rays and ionizing radiation. In comparison with the case where the far-infrared radiation and ionizing radiation irradiation bodies are separately provided, the entire apparatus can be downsized.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an entire device showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of an upstream side portion of the device showing the first embodiment of the present invention.

FIG. 3 is a partially cutaway perspective view of an upstream side portion of the device showing the first embodiment of the present invention.

FIG. 4 is an enlarged cross-sectional view of a main part of the device showing the first embodiment of the present invention.

5 is a sectional view taken along line XX of FIG.

FIG. 6 is a front view of the partition plate showing the first embodiment of the present invention.

FIG. 7 is a front view of the magnet plate showing the first embodiment of the present invention.

FIG. 8 is a cross-sectional view of the middle-flow side portion of the device showing the first embodiment of the present invention.

FIG. 9 is a sectional view of the entire apparatus showing a second embodiment of the present invention.

FIG. 10 is a cross-sectional view of the entire device showing a third embodiment of the present invention.

FIG. 11 is a sectional view of the entire apparatus showing a fourth embodiment of the present invention.

[Description of sign]

 1 Cylindrical body 2 Radiation irradiation layer 4 Vacancy 5 Fuel inlet 7 Fuel outlet 9 Radiation irradiation body 10 Partition plate 13,15 Through hole 14 Magnet plate 16 Retaining ring

Claims (5)

[Claims] 1. A method for reducing harmful substances in engine exhaust gas, which comprises irradiating a fuel with ionizing radiation to radiolytically decompose aromatic hydrocarbons of the fuel and then supplying the fuel to an engine for combustion. . 2. The fuel is irradiated with far-infrared rays corresponding to the absorption wavelength of the aromatic hydrocarbon in the fuel, and the molecules of the aromatic hydrocarbon are activated by the heat generated by the self-heating action of the aromatic hydrocarbon. The aromatic hydrocarbon is decomposed by radiolysis with ionizing radiation.
The method for reducing harmful substances in engine exhaust gas according to. 3. A radiation irradiator layer in which a granular radiation irradiator (9) is filled inside a cylindrical body (1) having a fuel inlet (5) at one end and a fuel outlet (7) at the other end. In the engine exhaust gas harmful substance reduction device, which is provided with (2) to activate the fuel by irradiating the fuel passing through the cylindrical body (1) with the radiation irradiator (9), A device for reducing harmful substances in engine exhaust gas, comprising an ionizing radiation irradiator for generating and irradiating ionizing radiation as the body (9). 4. The apparatus for reducing harmful substances in engine exhaust gas according to claim 3, wherein the radiation irradiator layer (2) is provided with a far infrared irradiator (9) for generating and irradiating far infrared rays. . 5. An apparatus for reducing harmful substances in engine exhaust gas according to claim 3, wherein the radiation irradiator (9) is provided with an irradiator for generating and irradiating far infrared rays and ionizing radiation. .