JP4902745B2 - Intake device for internal combustion engine and fabric for activation of intake - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an intake device for an internal combustion engine and an intake activation fabric used therefor, and more specifically, an intake device for an internal combustion engine in which intake air is activated by the intake activation fabric and fuel consumption is reduced. The present invention relates to an activation fabric.

  Exhaust gas emitted from automobile engines driven by fossil fuels such as gasoline contains harmful gases, which are said to be one of the causes of air pollution. For this reason, in advanced countries including Japan, laws and regulations are strictly enforced in order to reduce the amount of harmful gases in the exhaust gas emitted by automobile engines.

  The harmful gas contained in the exhaust gas discharged from the automobile engine is represented by three components of hydrocarbon HC, nitrogen oxide NOx, and carbon monoxide CO. At present, most of the methods for purifying the harmful gas contained in the exhaust gas are provided with a three-way catalyst for simultaneously purifying the three components of toxic gases HC, NOx and CO in the exhaust pipe of the engine. The catalyst is converted to a non-toxic gas by bringing a harmful gas into contact therewith.

  However, in the exhaust gas purification method, in order to decompose the three components of the toxic gas substantially uniformly at the same time, the air-fuel ratio of the fuel mixed gas supplied to the combustion chamber is set to a specific region called “window”. Need to control. In addition, in order to maintain such a “window” air-fuel ratio, it is necessary to supply hydrogen and oxygen into the exhaust gas. However, since the hydrogen and oxygen required in this way are supplied by thermally dissociating part of the fuel, an extra amount of fuel other than for engine operation is required, which is the amount of fuel consumed. It was a cause to increase. This is apparent from the report that removing a three-way catalyst exhaust gas purification mechanism from a used car exported to a country that does not regulate exhaust gas will improve fuel efficiency by 20-30%.

  Kamata, among the inventors of the present invention, has proposed Patent Document 1 as a measure for improving fuel consumption of an automobile engine provided with the exhaust gas purification mechanism. The invention of Patent Document 1 is arranged such that a metal powder such as Cr, Mo, W, Fe, Ni, Co, or platinum is supported on a silicone rubber or the like as a catalyst in an engine intake pipe. When the intake air contacts the metal catalyst arranged in the intake pipe in this way, water vapor and carbon dioxide in the intake air undergo a dissociation reaction, and are converted into hydrogen and oxygen and supplied to the engine. Since the hydrogen and oxygen supplied in this way are replaced with the hydrogen and oxygen supplied by thermal dissociation of a part of the fuel as described above, fuel consumption is suppressed and fuel consumption is improved. It is.

As a result of further various studies on the invention of Kamata, the present inventors limited the type of metal to a ferromagnetic material in particular, and coated this ferromagnetic material on the surface of an electrically insulating fiber as a thin metal film. A conductive fiber was formed, and the conductive fiber was made into a fabric having a large number of through holes in a surface of a woven fabric, a knitted fabric or the like. When this fabric is disposed on a portion of an intake pipe made of a non-metallic material in an engine or an air filter, the fabric enters an electromagnetic wave in the air to excite a magnetic field, and the action of electromagnetic vibration of the magnetic field causes the It has been found that a large amount of hydrogen and oxygen can be generated by dissociating water vapor and carbon dioxide. Since a large amount of hydrogen and oxygen generated in this way are supplied to the engine, fuel efficiency can be remarkably improved as will be described in detail below.
Japanese Unexamined Patent Publication No. 2001-234820

  An object of the present invention is to provide an intake device for an internal combustion engine that can reduce fuel consumption by activating intake by using an intake activation fabric. In addition, another object of the present invention is to provide an intake air activation fabric that activates intake air in this way and enables reduction in fuel consumption.

  An intake device for an internal combustion engine according to the present invention that achieves the above object is characterized in that an intake activation fabric having the following configuration is arranged in an intake pipe or an air filter made of a non-metallic material. This inspiratory activated fabric is composed of conductive fibers obtained by coating insulating fibers made of at least one filament having a single fiber diameter of 0.1 to 60 μm with a ferromagnetic metal film having a thickness of 1 μm or less. And it is comprised so that it may have many through-holes in a fabric surface.

  The inhalation-activated fabric used in the present invention is composed of conductive fibers obtained by coating insulating fibers with a thin metal film of a ferromagnetic material, and has a large number of through holes in the fabric surface. Yes. When this intake activation fabric is disposed on an intake pipe or an air filter made of a nonmetallic material, a strong magnetic field is excited on the fabric by the incidence of electromagnetic waves in the air on the fabric. This magnetic field has a high impedance in the terahertz region by setting the single fiber diameter of the insulating fiber in the conductive fiber to 0.1 to 60 μm and the thickness of the ferromagnetic metal film to 1 μm or less. Since the magnetic field is generated with a large intensity, it acts to dissociate water vapor and carbon dioxide in the intake air, generating a large amount of hydrogen and oxygen. And this hydrogen and oxygen bring about the reduction of a fuel consumption.

  In order to improve such an effect of reducing fuel consumption, it is preferable that an average maximum opening length of the fabric through holes in a plan view is 0.1 to 5 mm. As the ferromagnetic material forming the metal film, a metal selected from iron, nickel and alloys of these metals is preferable. The insulating fiber is preferably a synthetic fiber. Further, the fabric is preferably one that excites a magnetic field of electromagnetic vibration having a frequency in the terahertz range.

  The position where the fabric is disposed in the intake pipe made of a non-metallic material may be any of the outer peripheral surface, the inner peripheral surface, and the inside of the pipe wall of the intake pipe. Further, the fabric may be arranged at least 0.5 times the inner circumferential length of the pipe in the circumferential direction of the intake pipe, and may be arranged over a length of 0.5 times or more the inner circumferential length of the pipe in the length direction. preferable. Further, the fabric is preferably arranged in a region of 10 cm or more and 70 cm or less on the non-metallic material intake pipe side from the connection boundary between the non-metallic material intake pipe and the metal intake pipe on the internal combustion engine side.

  The fabric may be arranged in a single layer, or may be arranged in multiple layers. In the case of an internal combustion engine used in a cold region, it is preferable to attach a heater to the fabric or attach a far-infrared radiation means. Or you may make it attach a terahertz electromagnetic wave generator.

FIG. 1 is a schematic view showing an automobile engine provided with an intake device of the present invention. FIG. 2 is an explanatory view showing the principle that a magnetic field is excited in the fabric of the present invention. FIG. 3 is an enlarged view showing a main part of the intake device of the present invention. FIG. 4 is a plan view illustrating a fabric of the fabric of the present invention. FIG. 5 is a plan view illustrating a knitted fabric of the fabric of the present invention. FIG. 6 illustrates conductive fibers constituting the fabric of the present invention, in which (A) is a side view and (B) is a cross-sectional view. FIG. 7 shows another embodiment of the conductive fiber constituting the fabric of the present invention, in which (A) is a side view and (B) is a cross-sectional view. FIG. 8 is an enlarged view showing a main part of another embodiment of the intake device of the present invention. FIG. 9 is an enlarged view showing a main part of still another embodiment of the intake device of the present invention. FIG. 10 is an enlarged view showing a main part of still another embodiment of the intake device of the present invention. FIG. 11 is an enlarged view showing a main part of still another embodiment of the intake device of the present invention. FIG. 12 is an enlarged view showing a main part of still another embodiment of the intake device of the present invention. FIG. 13 is an enlarged view showing a main part of still another embodiment of the intake device of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Engine 2 Intake pipe 2m Intake pipe made of metal 2p Intake pipe made of non-metallic material 3 Exhaust pipe 4 Air filter 10 Intake activation fabric 11 Conductive fiber 12 Through hole 13 Insulating fiber 14 Ferromagnetic metal film 15 Heater 16 Thermal insulation material f Filament

  FIG. 1 is a schematic view of an automobile engine provided with an intake device of the present invention.

  Reference numeral 1 denotes an engine operated with gasoline as fuel, 2 an intake pipe, and 3 an exhaust pipe. The intake pipe 2 is configured by connecting an intake pipe 2p made of a non-metallic material made of resin to a metal intake pipe 2m directly connected to an intake port of the engine 1. An air filter 4 is attached to the intake side of the intake pipe 2p made of a non-metallic material, and a carburetor 5 is attached to the downstream side thereof. Further, an air intake activation fabric 10 described later is wound between the air filter 4 and the vaporizer 5.

  The exhaust pipe 3 is provided with a three-way catalyst 6 for simultaneously purifying toxic gas three components HC, NOx, and CO in the exhaust gas, and an exhaust sensor 7 for detecting the mixed amount of the toxic gas three components is provided downstream thereof. It has been. The exhaust sensor 7 detects the mixing amount of the three toxic gas components in the exhaust gas and sends a detection signal to the control unit 8. Based on the detection signal of the exhaust sensor 7, the control unit 8 calculates the air-fuel ratio of the fuel mixed gas that causes the mixing amount of the three toxic gas components to be below a specified level, and commands the calculation result to the throttle 9 of the fuel supply unit. To do.

  As illustrated in FIG. 6 or FIG. 7, the inspiratory activation fabric 10 is composed of conductive fibers in which an insulating fiber 13 is coated with a ferromagnetic metal film 14. For example, a woven fabric, a knitted fabric, or a non-woven fabric is used. Is formed. A number of through holes are formed in the fabric surface. FIG. 2 shows a case where the intake air activation fabric 10 is a woven fabric. The woven fabric 10 is woven using conductive fibers 11 as warps and wefts, and the weaves are through holes 12. The through-hole 12 forms an annular path around the conductive fiber 11. When the electromagnetic wave in the air enters the fabric 10 thus configured, a circulating current i is generated in the annular path of the conductive fiber 11 around the through-hole 12, thereby exciting the magnetic field M.

  Such excitation of the magnetic field can be further promoted by placing the fabric 10 in a heated state by radiant heat of the engine 1 or the like. The temperature is preferably in the range of 80 to 90 ° C. The fabric 10 may be heated by attaching a heater, or by attaching a far-infrared radiation means. Alternatively, a terahertz electromagnetic wave generating unit may be disposed instead of the heating unit, and excitation of the magnetic field of the fabric may be promoted by the terahertz electromagnetic wave.

As shown in FIG. 3, when the fabric 10 described above is arranged in the intake pipe 2m made of a non-metallic material, the magnetic field M excited on the fabric 10 includes water vapor H ₂ contained in the intake air moving in the intake pipe 2m. O and carbon dioxide gas CO ₂ are dissociated into hydrogen ions and oxygen ions, respectively, and converted into hydrogen H ₂ and oxygen O ₂ , respectively. The magnetic field M that generates hydrogen and oxygen in this way preferably has an electromagnetic vibration with a frequency in the terahertz range, particularly an electromagnetic vibration in the terahertz range of 0.1 to 10 THz. Hydrogen and oxygen generated by the dissociation action of the magnetic field M in the terahertz range are used as hydrogen and oxygen required for the exhaust gas purification reaction by the three-way catalyst. That is, fuel consumption can be reduced by replacing part of the fuel with hydrogen and oxygen supplied by thermal dissociation.

  The inspiratory activation fabric of the present invention has a large number of through holes in the surface, and an annular path of conductive fibers is formed around the through holes. Examples of the fabric having a large number of through holes in the surface of the fabric include a woven fabric, a knitted fabric, and a non-woven fabric. As shown in FIG. 4, the conductive fabric 11 has warps and wefts interwoven in the form of a lattice, and a large number of lattice-like textures are formed as through holes 12. In the knitted fabric, as shown in FIG. 5, the conductive fibers 11 form a large number of loop-shaped stitches, and these loop-shaped stitches are through holes 12. Further, although not shown, the nonwoven fabric is a fabric in which a large number of conductive fibers are randomly crossed or entangled, and a large number of gaps surrounded by the crossed or entangled conductive fibers are used as through holes. Yes.

  The inspiratory activation fabric of the present invention excites a magnetic field having electromagnetic vibrations in a terahertz range, particularly in a frequency of 0.1 to 10 THz. In order for the fabric to excite a magnetic field in the terahertz range, it must be arranged in a non-metallic material intake pipe or a non-metallic air filter. The fabric may be arranged under heating conditions or under conditions where electromagnetic waves in the terahertz range are likely to be incident. If the fabric is not arranged in the intake pipe or the air filter made of a non-metallic material but is arranged in the metal intake pipe, a circulation current is not generated in the fabric, so that the magnetic field cannot be excited. In recent years, most of the intake pipes for automobile engines are made of resin except for a portion directly connected to the engine for weight reduction. Therefore, the intake pipes may be arranged in the resin intake pipe. The resin intake pipe may be formed by injection molding of resin, or may be woven from resin fibers and formed in a canvas.

  Regarding the arrangement of the fabric under heating conditions, generally, an automobile engine is in a bonnet, and the intake pipe is heated by the radiant heat of the engine. Therefore, it is not usually necessary to heat by a special heating means. . However, in the case of an automobile used in a cold region or an automobile having a structure in which strong cooling air flows into the engine, a heater is attached to the fabric, or a far infrared radiation member is used in combination. Good. Examples of far infrared radiation materials include germanium, radium ore, and functional ceramics. It is preferable to use a material obtained by mixing these substances into a powder form and mixing it with a resin or rubber to form a sheet.

  Further, instead of the heating means, terahertz electromagnetic wave generation means may be arranged in the vicinity of the intake pipe or the air filter on which the fabric is arranged, or in an arbitrary place in the automobile. By radiating the terahertz electromagnetic wave generated by the terahertz electromagnetic wave generating means to the fabric, a magnetic field in the terahertz region can be excited.

  In the present invention, the conductive fiber constituting the inspiratory activated fabric is configured by covering the insulating fiber with a ferromagnetic metal film. The insulating fiber is not particularly limited as long as it has electrical insulation, but synthetic fibers are preferably used. Examples of synthetic fibers include polyester fibers, polyamide fibers, acrylic fibers, polyvinyl alcohol fibers, and aramid fibers.

  Further, any ferromagnetic metal can be used as long as it is a ferromagnetic metal. Among them, a metal selected from iron, cobalt, nickel, or an alloy containing these metals is used. Is good.

  Examples of the method of coating the insulating fiber with the ferromagnetic metal film include a plating method, a vapor deposition method, and a sputtering method. Among these, the plating method is particularly preferable because it is inexpensive, and the plating method may be either an electroless plating method or an electrolytic plating method, but preferably an electroless plating method. Vapor deposition and sputtering are particularly excellent for forming a thin metal film with a uniform thickness. In addition, as a method of coating the insulating fiber with the ferromagnetic metal film, the cloth may be coated with the metal film after the cloth is formed from the insulating fiber, or the insulating fiber may be coated in advance. After forming a conductive fiber by coating a metal film, a fabric may be formed from the conductive fiber.

  As a form of the conductive fiber forming the fabric, as shown in FIG. 6, the conductive fiber 11 may be composed of a monofilament 11a having only one filament f, or as shown in FIG. The fiber 11 may be a multifilament 11b composed of a plurality of filaments f. In the case where the conductive fiber 11 is composed of the multifilament 11b, it is preferable to use a twisted yarn to prevent loosening. The twisted yarn may be a single twisted yarn twisted only in one direction, or a plurality of single twisted yarns are combined as a lower twisted yarn, and an upper twist is applied to these lower twisted yarns and twisted together. Also good. Regardless of whether the conductive fiber 11 is composed of a monofilament 11a or a multifilament 11b, each filament f constituting the conductive fiber 11 has a structure in which the surface of the insulating fiber 13 is coated with a ferromagnetic metal film 14. It has become.

  The inspiratory activation fabric of the present invention has an action of dissociating water vapor and carbon dioxide contained in the inhalation by exciting a magnetic field in the terahertz region and promoting the conversion to hydrogen and oxygen. In order to excite a magnetic field in the terahertz range, the conductive fiber that forms the fabric needs to have a thickness of the ferromagnetic metal film of the outer skin of 1 μm or less. The thickness of the metal film is preferably 0.01 to 0.8 μm, more preferably 0.01 to 0.6 μm. In general metal plating, since the thickness is usually about 1 to 2 μm, it is characterized by being thinner than a normal plating film.

  The insulating fiber of the core material covered with the metal film needs to have a single fiber diameter in the range of 0.1 to 60 μm. The single fiber diameter is preferably 6 to 40 μm, more preferably 6 to 30 μm. Of the single fiber diameters of 0.1 to 60 μm, when the conductive fibers are monofilaments, the single fiber diameter is preferably in the range of 6 to 60 μm for the durability of the fibers. When the conductive fiber is composed of multifilaments, the single fiber diameter of each filament is in the range of 0.1 to 30 μm, more preferably 6 to 30 μm. Further, when the conductive fiber is a multifilament, the number of filaments is preferably about 2 to 1000.

  In the present invention, the thickness of the above-described ferromagnetic metal film and the thickness of the insulating fiber were taken in a photograph in which the cross section of the conductive fiber was magnified 500 times with an electron microscope, and an arbitrary image was obtained from the magnified photograph. Twenty conductive fibers are sampled, the thickness of the metal film of each conductive fiber and the thickness of the insulating fiber are measured, and the average value of the sum of these measured values is defined.

  The strength of the magnetic field excited by the fabric depends on the thickness of the ferromagnetic metal film and the thickness of the insulating fiber, but also depends on the size of the through-hole of the fabric in plan view. If the size of the through hole in plan view is too large, the amount of electromagnetic waves that pass through the fabric increases, and the amount of trapping decreases, resulting in a weak magnetic field strength. Moreover, even if the size of the through hole becomes too small, the circulating current is short-circuited, so that it is difficult to obtain a strong magnetic field. Therefore, the size of the through-holes in the fabric surface in plan view is preferably 0.1 to 5 mm as the average maximum opening length.

  The “average maximum opening length” means that a section of 30 mm × 30 mm in size is taken from a fabric, photographed on a photograph magnified 50 times with a microscope, and any 20 through holes are taken from the magnified photograph. The maximum opening length of each through hole is measured and defined by the average value of the sum of these measured values. Here, the “maximum opening length” of the through-hole refers to one that is measured as the maximum length when the opening length of the through-hole is measured from all loose angles in plan view. For example, in the case of the woven fabric of FIG. 4, the maximum opening length a is obtained when the through-holes 12 of the lattice-like texture are measured diagonally, and this is adopted. In the case of the knitted fabric of FIG. 5, the maximum opening length b is obtained when the through-hole 12 of the loop-shaped knitting is measured from all loose angles, and when it is measured obliquely, this is adopted.

  As a position for attaching the intake activation fabric to the intake pipe made of a non-metallic material, it may be wound around the outer peripheral surface of the intake pipe, may be affixed on the inner peripheral surface, or embedded in the pipe wall. Also good. Or you may make it arrange | position over several places among the outer peripheral surface of these intake pipes, an internal peripheral surface, and the inside of a pipe wall. Among these, the outer peripheral surface of the intake pipe is optimal from the viewpoint of ease of mounting work. The arrangement of the intake pipe on the inner peripheral surface or inside the pipe wall is effective when a sufficient space for installing the fabric cannot be secured on the outer peripheral surface of the intake pipe.

  When the cloth is attached to the outer periphery or the inner periphery of the intake pipe, the attachment work of the intake activation cloth to the intake pipe may be performed by applying an adhesive to the intake pipe and / or the cloth and affixing each other. Instead of applying the adhesive, a double-sided adhesive tape may be used. Further, when the fabric is attached to the outer periphery of the intake pipe, it may be fixed by tightening with a tightening band instead of the adhesive. When the fabric is embedded in the pipe wall of the intake pipe, it may be formed at the same time when the intake pipe is injection-molded.

  The shape of the fabric can be cut into a rectangular shape corresponding to the size of the area to be arranged in the intake pipe, or can be a long tape shape. The tape-shaped fabric is arranged so as to be spirally wound around the outer periphery or inner periphery of the intake pipe along the longitudinal direction of the intake pipe.

  The region where the intake activation fabric is disposed in the intake pipe made of a non-metallic material is preferably arranged at least 0.5 times the inner peripheral length of the intake pipe in the circumferential direction of the intake pipe, preferably around the entire circumference. Further, in the length direction of the intake pipe, it is preferable to arrange it at a length of 0.5 times or more, preferably 1 time or more of the inner peripheral length of the intake pipe. By disposing the fabric in the circumferential direction and the length direction of the intake pipe in this way, it is possible to efficiently dissociate water vapor and carbon dioxide in the intake air.

  The intake activation fabric may be separated from the engine with respect to the intake pipe made of a non-metallic material as follows. A non-metallic material intake pipe may be disposed in a region between 10 cm and 70 cm on the non-metallic material intake pipe side from the connection boundary where the non-metallic material intake pipe is connected to the internal combustion engine side metal intake pipe. If the position of the fabric is less than 10 cm from the connection boundary of the intake pipe, the water vapor and carbon dioxide gas may not be sufficiently dissociated. In addition, when it is arranged at a position farther than 70 cm from the connection boundary of the intake pipe, when hydrogen and oxygen are generated by dissociating water vapor and carbon dioxide gas, the hydrogen and oxygen are changed to another substance. There is.

  The installation work of the intake activation fabric to the intake pipe may be performed by the car manufacturer in the production process of the automobile, or after the automobile is shipped from the car manufacturer, the car dealer, the car repairer, or the car user performs the work. May be.

  In the intake device according to the embodiment of the present invention shown in the figure, the embodiment of FIG. 3 is obtained by wrapping an intake activation fabric 10 around the outer periphery of an intake pipe 2m made of a non-metallic material. The intake activation fabric 10 may be affixed to the inner peripheral side of the intake pipe 2m as in the embodiment of FIG. 8, or embedded in the pipe wall of the intake pipe 2m as in the embodiment of FIG. May be. Further, in the embodiment of FIG. 10, the intake activation fabric 10 is double-layered on the outer periphery of the intake pipe 2m. The number of layers of the fabric 10 may be three or more. Thus, by laminating | stacking the fabric 10 in multiple layers, the dissociation effect | action of water vapor | steam and a carbon dioxide gas can be improved.

  In the embodiment of FIG. 11, a heater 15 is laminated on a fabric 10 wound around the outer periphery of an intake pipe 2 m, and a heat insulating layer 16 for preventing heat dissipation is further covered. In an automobile used in a cold region, the temperature inside the bonnet is not easily raised by the radiant heat of the engine, and cold air enters during the running and the inside of the bonnet is cooled, so that the fabric 10 tends to have a low temperature. As a result, it becomes difficult to excite a high magnetic field in the terahertz region. However, when the heater 15 is attached to the fabric 10 as in the embodiment of FIG. 11, the temperature of the fabric 10 can be maintained at a high temperature, and thus the fabric 10 can excite a high-intensity magnetic field.

  In the embodiment of FIG. 12, a far infrared radiation layer 18 is further laminated on the outer side of the fabric 10 wound around the outer periphery of the intake pipe 2m. For the far-infrared radiation layer 18, a sheet material obtained by mixing a powder of a far-infrared radiation material with resin or rubber can be used. Examples of the far-infrared emitting material to be mixed include germanium, radium ore, and functional ceramics as described above. Since the far-infrared radiation layer 18 emits far-infrared rays to the fabric 10 and raises the temperature of the fabric 10, the same effect as that of the embodiment of FIG. 11 can be exerted on the engine of the automobile in a cold region.

  The heater 15 in the embodiment of FIG. 11 and the far-infrared radiation layer 18 in the embodiment of FIG. 12 are provided so that both heating means are in contact with the fabric 10. However, even if these heating means are arranged at positions separated from the fabric 10, the same effect can be obtained.

  As the auxiliary means for exciting the above-described terahertz magnetic field, the terahertz electromagnetic wave generating means may be arranged in the vicinity of the fabric 10. By making the terahertz electromagnetic wave radiated from the terahertz electromagnetic wave generating means incident on the fabric 10, the fabric 10 can be excited with a magnetic field in the terahertz region.

  FIG. 13 shows an intake pipe 2m having a bellows structure attached to a diesel engine of a large truck. The intake pipe 2m is formed in a cylindrical bellows structure by a canvas woven with synthetic fibers, and a spiral spring 17 is inserted on the inner peripheral side. A tape-like fabric 10 is wound along a spiral valley portion on the outer peripheral side of the intake pipe 2m.

  The above-described intake device of the present invention is effective not only for an engine using gasoline as fuel, but also for a diesel engine using light oil as fuel. In addition, the intake device of the present invention is effective for improving fuel efficiency with respect to an internal combustion engine having an exhaust gas purification mechanism using a three-way catalyst. In contrast, an excellent fuel economy improvement effect can be provided. This means that when the exhaust gas purification mechanism is removed in a non-exhaust gas regulated country, the fuel efficiency is improved by about 20 to 30%, as shown in the experimental example of Example 1 below. It is obvious from the fact that the improvement of fuel consumption exceeding 30% can be obtained when using the intake device.

  A polyester monofilament having a single fiber diameter of 30 μm is woven into an 80-mesh plain woven fabric, and the woven fabric is nickel-plated by an electroless plating method, whereby a nickel film having a thickness of 0.25 μm is coated on the surface of the polyester monofilament, and An inspiratory activated fabric having an average maximum opening length of 0.35 mm when the texture (through hole) was measured in plan view was produced.

  On the other hand, a passenger car equipped with a 3000 cc total gasoline engine equipped with a three-way catalyst exhaust gas purification mechanism was prepared as a test vehicle. The average fuel consumption of this passenger car when traveling in urban areas was 7 km / L, and the average fuel efficiency when traveling on highways was 10.5 km / L. The above-described intake activation fabric was attached to the outer periphery of the resin-made intake pipe of the passenger car engine so as to be cut into a size of 50 mm × 150 mm. The winding position of the intake activation fabric around the resin intake pipe was a position 40 cm upstream from the connection boundary between the resin intake pipe and the engine-side metal intake pipe.

  Using the regular gasoline as fuel, the passenger car was measured for the average fuel consumption when traveling in a city area for 600 km and the average fuel consumption when traveling for 600 km on a highway. As a result, the fuel consumption during city driving was 12.5 km / L, and the fuel consumption during highway driving was 20 km / L. Therefore, 78.6% of fuel efficiency improvement effect was obtained in urban driving, and 90.5% of fuel efficiency improvement effect was obtained in highway driving.

  A plain filament woven fabric of 18 mesh is woven by a multifilament twisted yarn composed of 432 polyester filaments having a single fiber diameter of 6 μm, and this fabric is plated with nickel by an electroless plating method. An inspiratory activated fabric having an average maximum opening length of 1.43 mm, which was coated with a 5 μm nickel film and whose weave (through hole) was measured in plan view, was manufactured.

  On the other hand, as a test vehicle, a diesel engine with a total displacement of 13,000 cc equipped with an exhaust gas purification mechanism of a three-way catalyst was installed, and a truck with a vehicle weight of 11 tons was prepared. The average fuel consumption of this truck during city driving was 3 km / L. The above-mentioned intake activation fabric was cut into 35 mm × 500 mm and wound around the outer periphery of the resin intake pipe of the engine of the truck.

  When the average fuel efficiency of the above-mentioned truck traveling on a city area for 500 km with light oil as fuel was measured, it was 3.5 km / L. Therefore, a fuel efficiency improvement effect of 16.7% was obtained.

Claims (18)

  It is composed of conductive fibers in which an insulating fiber composed of at least one filament having a single fiber diameter of 0.1 to 60 μm is coated with a ferromagnetic metal film having a thickness of 1 μm or less, and has a large number of through holes in the surface. An intake device for an internal combustion engine, in which a fabric configured to have the above is disposed in an intake pipe or an air filter made of a nonmetallic material.   The intake device for an internal combustion engine according to claim 1, wherein an average maximum opening length in a plan view of the through-hole of the fabric is 0.1 to 5 mm.   The intake device for an internal combustion engine according to claim 1 or 2, wherein the ferromagnetic material is a metal selected from iron, cobalt, nickel, and an alloy containing these metals.   The intake device for an internal combustion engine according to claim 1, 2, or 3, wherein the insulating fiber is a synthetic fiber.   The intake device for an internal combustion engine according to any one of claims 1 to 4, wherein the fabric excites a magnetic field having electromagnetic vibrations having a frequency in a terahertz range.   The intake device for an internal combustion engine according to any one of claims 1 to 5, wherein the fabric is disposed at at least one location on an outer peripheral surface, an inner peripheral surface, and a tube wall of the intake pipe.   7. The fabric is disposed at least 0.5 times the inner circumferential length of the pipe in the circumferential direction of the intake pipe, and at least 0.5 times the inner circumferential length of the pipe in the length direction. An intake device for an internal combustion engine according to claim 1.   The fabric is disposed in a region between 10 cm and 70 cm from the connection boundary between the metal intake pipe on the internal combustion engine side and the intake pipe made of the nonmetallic material to the intake pipe side made of the nonmetallic material. The intake device for an internal combustion engine according to claim 6 or 7.   The intake device for an internal combustion engine according to any one of claims 6 to 8, wherein the fabric is arranged in a plurality of layers.   The intake device for an internal combustion engine according to any one of claims 1 to 9, wherein a heater is attached to the fabric.   The intake device for an internal combustion engine according to any one of claims 1 to 9, wherein far-infrared radiation means is attached to the fabric.   The intake device for an internal combustion engine according to any one of claims 1 to 9, wherein terahertz electromagnetic wave generation means is attached to the fabric.   The intake device for an internal combustion engine according to any one of claims 1 to 12, wherein the internal combustion engine is an automobile engine provided with an exhaust gas purification mechanism using a three-way catalyst.   It is composed of conductive fibers in which an insulating fiber consisting of at least one filament with a single fiber diameter of 0.1 to 60 μm is coated with a ferromagnetic metal film with a thickness of 1 μm or less, and a large number of in-plane threads A fabric for activating an intake air of an internal combustion engine comprising a fabric configured to have holes.   The fabric for activating an intake air of an internal combustion engine according to claim 14, wherein an average maximum opening length in a plan view of the through-hole of the fabric is 0.1 to 5 mm.   The fabric for activating an intake air of an internal combustion engine according to claim 14 or 15, wherein the ferromagnetic material is a metal selected from iron, cobalt, nickel and an alloy containing these metals.   The fabric for intake air activation of an internal combustion engine according to any one of claims 14 to 16, wherein the insulating fiber is a synthetic fiber.   The fabric for activating an intake air of an internal combustion engine according to any one of claims 14 to 17, wherein the fabric has a characteristic of exciting a magnetic field having electromagnetic vibration having a frequency in a terahertz range.

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