JP3737101B1 - Exhaust gas purification device for internal combustion engine - Google Patents

Abstract

To provide an exhaust gas purification device that has a simple structure, can be easily attached to and detached from an exhaust pipe of an internal combustion engine, can be easily cleaned, and can eliminate generation of black smoke and white smoke as much as possible.
A cylindrical wall portion 1 and an end wall portion 2 that closes the distal end portion of the cylindrical wall portion 1 form a bottomed cylindrical shape, and a gas vent opening 3 is provided at an axially intermediate portion of the cylindrical wall portion 1 to end the end portion. A casing 5 having an exhaust hole 4 provided in the wall portion 2 is provided, and the metal strips 6 are densely loaded on the front end side in the casing 5, and an exhaust pipe of the internal combustion engine is provided on the front side of the metal strip loading portion M. An exhaust flow guide member 7 for guiding the flow of exhaust gas entering the casing 5 into the metal strip loading portion M is provided, and the base end portion 1o of the cylindrical wall portion 1 of the casing 5 is connected to the distal end portion of the exhaust pipe of the internal combustion engine. Removably attached to the.
[Selection] Figure 2

Description

  The present invention relates to an exhaust gas purification device for purifying exhaust gas discharged from an exhaust pipe of an internal combustion engine such as a diesel engine, and more particularly, exhaust gas in which graphite, white smoke, and the like, which are exhaust smoke, are eliminated as much as possible. The present invention relates to a gas purification device.

  Exhaust smoke is a problem peculiar to internal combustion engines such as diesel engines as well as odor, and is taken up as a visual pollution problem such as obstructing traffic vision and deteriorating urban beauty rather than direct harm to the human body itself. This exhaust smoke is roughly divided into black smoke and white smoke. The black smoke is 1-30 μ soot (soot) in which fine carbon particles of about 0.02-0.04 μ stick together. Further, white smoke is discharged as a partially burned droplet of fuel due to the low temperature of the combustion chamber at the time of cold start, and it may be generated when the engine oil burns in addition to the case where it looks white. In addition, white smoke caused by ignition delay is also known. In any case, black smoke and white smoke adversely affect the human body and deteriorate the environment. Therefore, it is necessary to minimize the generation of such graphite and white smoke.

  However, various devices for removing graphite and the like discharged from an internal combustion engine such as a diesel engine have been proposed, but the conventional exhaust gas purifying device is attached to an exhaust pipe of an internal combustion engine such as a diesel engine. However, there is a problem that the manufacturing cost is high because an expensive filter or the like is used or the structure is complicated.

  In view of the above problems, the present invention has a simple structure, can be easily attached to an exhaust pipe of an internal combustion engine, can be easily removed, can be easily cleaned, and does not generate black smoke or white smoke as much as possible. It is an object of the present invention to provide an exhaust gas purification device that can be configured as described above.

Means for solving the above problems will be described with reference numerals in the embodiments described later. The exhaust gas purifying apparatus for an internal combustion engine according to claim 1 includes a cylindrical wall portion 1 and a tip portion thereof. A casing having a bottomed cylindrical shape formed by an end wall portion 2 to be closed, a gas vent opening 3 provided in an axial intermediate portion of the cylindrical wall portion 1, and a plurality of exhaust holes 4 provided in the end wall portion 2. 5 is coupled to the front end portion of the exhaust pipe of the internal combustion engine, the metal strips 6 having an arbitrary shape are densely loaded on the front end side in the casing 5, and the internal combustion engine is disposed on the front side of the metal strip loading portion M. An exhaust flow guide member 7 for guiding the flow of exhaust gas entering the casing 5 from the exhaust pipe into the metal strip loading portion M is provided , and the exhaust flow guide member 7 is provided with a long metal strip 11. It is characterized by being made of a spiral wound .

The exhaust gas purifying device for an internal combustion engine according to a second aspect of the present invention has a bottomed cylindrical shape formed by the cylindrical wall portion 1 and the end wall portion 2 that closes the tip end portion of the cylindrical wall portion 1. Is provided with a casing 5 provided with a venting opening 3 and a plurality of exhaust holes 4 in the end wall 2, and metal strips 6 having an arbitrary shape are densely loaded on the front end side of the casing 5. the forward side of the metal strip loading unit M is provided with an exhaust flow guide member 7 for guiding the flow of the metal strip loading unit M of the exhaust gas entering into the casing 5 from the exhaust pipe of an internal combustion engine, the exhaust The flow guide member 7 is formed by winding a long metal strip 11 in a spiral shape, and the base end 1o of the cylindrical wall 1 of the casing 5 is attached to and detached from the front end of the exhaust pipe of the internal combustion engine. The feature is that it can be installed freely.

According to a third aspect of the present invention, in the exhaust gas purifying device for an internal combustion engine according to the second aspect , the cylindrical wall 1 of the casing 5 has a cut 10 extending from the base end to the gas vent opening 3 along the axial direction. It is characterized by being put in.

The exhaust gas purifying device for an internal combustion engine according to a fourth aspect of the present invention comprises a cylindrical main body 16 and a bottomed cylindrical end casing 17 that is detachably attached to the tip of the cylindrical main body 16. The cylindrical main body 16 of the casing 5, in which the gas vent opening 3 is provided in a required portion of the cylindrical body 16 and the plurality of exhaust holes 4 are provided in the end wall portion 18 of the end casing 17, is connected to the exhaust pipe of the internal combustion engine. The metal strips 6 having an arbitrary shape are densely loaded in the end casing 17 of the casing 5, and the metal strip loading portion M is connected to the casing from the exhaust pipe of the internal combustion engine. 5 is provided with an exhaust flow guide member 7 for guiding the flow of exhaust gas entering the metal strip loading portion M, and the exhaust flow guide member 7 winds a long metal strip 11 in a spiral shape. characterized in that it consists to ones.

The exhaust gas purifying device for an internal combustion engine of the invention according to claim 5 comprises a cylindrical main body 16 and a bottomed cylindrical end casing 17 which is detachably attached to the distal end portion of the cylindrical main body 16. The casing 5 includes a casing 5 provided with a degassing opening 3 in a required portion and an end wall portion 18 of the end casing 17 provided with a plurality of exhaust holes 4. The metal strips 6 having an arbitrary shape are densely loaded on the front side, and the exhaust gas entering the casing 5 from the exhaust pipe of the internal combustion engine flows into the metal strip loading portion M on the front side of the metal strip loading portion M. The exhaust flow guide member 7 is provided by winding a long metal strip 11 in a spiral shape, and thus the base end of the cylindrical body 16 of the casing 5 is provided. Of the exhaust pipe of the internal combustion engine Characterized in that to attach detachably to the end.

  Claim 6 is the exhaust gas purifying device for an internal combustion engine according to any one of claims 1 to 5, wherein an electric heater 14 is inserted and disposed in the metal strip loading part M, and is energized and heated when necessary. It is characterized by that.

  A seventh aspect of the present invention relates to the exhaust gas purifying apparatus for an internal combustion engine according to the fifth or sixth aspect, wherein the cylindrical main body 16 of the casing 5 has a cut extending from the base end to the gas vent opening 3 along the axial direction. 10 is included.

  An eighth aspect of the present invention is the exhaust gas purifying device for an internal combustion engine according to any one of the first to seventh aspects, wherein the metal strip loading portion M is loaded with a ceramic strip in addition to the metal strip 6. And

  The effect of the invention by the above solution will be described with reference numerals in the embodiments described later. According to the exhaust gas purification apparatus for an internal combustion engine of the first aspect, the exhaust gas from the exhaust pipe of the internal combustion engine When the gas passes through the metal strip loading part M in the casing 5, fine carbon particles that form particularly black smoke in the exhaust gas are removed. That is, when the exhaust gas from the exhaust pipe passes through the metal strip loading part M, the fine carbon particles in the exhaust gas adhere to and be captured by the metal strip 6, thereby the end wall 2 of the casing 5. The exhaust gas discharged from the exhaust hole 4 is almost colorless. At this time, since a part of the exhaust gas introduced into the casing 5 is discharged from the gas vent opening 3, the air permeability in the casing 5 is maintained, and the engine performance of the engine, that is, the horsepower is reduced. Avoided.

  Further, when the truck T or the like is traveling at a high speed of, for example, about 80 to 100 km / h, the temperature of the exhaust gas introduced from the engine into the casing 5 of the exhaust gas purification apparatus A is, for example, 700 to 800 ° C. Since the metal strip loading part M in the casing 5 is heated to almost the same level as the temperature of the exhaust gas, when the exhaust gas passes through the metal strip loading part M, Fine carbon particles in the exhaust gas are attached to and captured by the metal strip 6 and are burned and lost by the high heat of the metal strip 6 heated to a high temperature of 600 to 800 ° C. Almost no habit remains. Also, when the fuel is discharged as partially burned droplets due to the low temperature of the combustion chamber at cold start, or when the fuel burns incompletely, such as when ignition delay or ignition failure occurs In such a case, the incomplete combustion gas passes through the metal strip loading part M of the casing 5 so that the incomplete combustion gas is completely combusted, thereby eliminating the generation of white smoke as much as possible. In addition, the generation of black smoke and white smoke is minimized as described above, and nitrogen oxides in the exhaust gas can be removed.

Further, according to this exhaust gas purifying apparatus, the exhaust flow that guides the flow of the exhaust gas that has entered the casing 5 from the exhaust pipe of the internal combustion engine into the metal strip loading portion M is on the front side of the metal strip loading portion M. Since the guide member 7 is provided, the exhaust gas that has entered the casing 5 from the exhaust pipe of the internal combustion engine flows smoothly into the metal strip loading portion M, and some of the exhaust gas has improved air permeability in the casing 5. As a result, the exhaust gas is exhausted to the extent that it is maintained, whereby the exhaust gas purification action can be performed more effectively. Moreover, as the exhaust flow guide member 7, to adopt that form winding an elongated metal strip spirally, it is possible to effectively perform the flow to the metal strip loading unit M of the exhaust gas .

  Further, according to the exhaust gas purifying apparatus of the present invention, the cylindrical wall portion 1 and the end wall portion 2 that closes the tip end portion of the exhaust gas purifying device are formed in a bottomed cylindrical shape. Since the casing 5 provided with the opening 3 for use and the exhaust wall 4 provided in the end wall 2 is coupled to the tip of the exhaust pipe of the internal combustion engine, the exhaust gas is produced when manufacturing a truck or the like. A purification device can be installed simultaneously with the installation of the tube. Further, the exhaust gas purifying apparatus of the present invention is very simple in structure and easy to manufacture, and as the metal strip 6, chips generated by cutting a workpiece with a machine tool can be used as they are, so that it can be provided at a very low cost. .

  According to the exhaust gas purifying apparatus of the invention of claim 2, the base end portion 1o of the cylindrical wall portion 1 of the casing 5 is fitted to the distal end portion of the exhaust pipe of the internal combustion engine and is detachably attached. Since the removal and attachment are simple and easy, the cleaning can be performed frequently, and the exhaust gas purification action can always be effectively performed. Other effects are the same as those of the first aspect of the invention.

  According to the third aspect of the present invention, since the cylindrical wall portion 1 of the casing 5 is provided with the cut 10 extending from the base end to the gas vent opening portion 3 along the axial direction, the exhaust pipe of the internal combustion engine. When attaching to the distal end portion 9a, it is easy to fit the cylindrical wall portion 1 into the distal end portion 9a, and by appropriately expanding and contracting the proximal end portion side of the cylindrical wall portion 1 with respect to the distal end portion 9a, The base end portion of the cylindrical wall portion 1 can be securely attached by being brought into close contact with the exhaust pipe portion 9a.

  The exhaust gas purifying device of the invention according to claim 4 comprises a cylindrical main body 16 and a bottomed cylindrical end casing 17 that is detachably attached to the tip of the cylindrical main body 16. The cylindrical main body 16 of the casing 5 in which the gas vent opening 3 is provided in the required portion and the plurality of exhaust holes 4 are provided in the end wall portion 18 of the end casing 17 is used as the tip of the exhaust pipe of the internal combustion engine. In the cylindrical body 16 side, the purification device can be installed simultaneously with the attachment of the exhaust pipe when manufacturing a truck or the like. When cleaning, only the end casing 17 is cylindrical. Since it is only necessary to remove the end casing 17 from the main body 16 and immerse the end casing 17 in the cleaning liquid, the cleaning becomes easy and easy. Other effects are the same as those of the first aspect of the present invention.

  The exhaust gas purification apparatus of the invention according to claim 5 is such that the base end portion of the cylindrical main body 16 of the casing 5 is detachably attached to the distal end portion of the exhaust pipe of the internal combustion engine. Can be easily attached to the tip of the existing exhaust pipe for use. Other effects are the same as those of the first aspect of the invention.

  According to the invention of claim 6, for example, when the truck T or the like is traveling in an urban area at about 40 to 50 km / h, the temperature of the exhaust gas introduced from the engine into the casing 5 of the exhaust gas purification device A. Is, for example, as low as about 300 to 400 ° C., and fine carbon particles and the like adhering to the metal strip 6 of the metal strip loading section M cannot be burned. Necessary for burning the fine carbon particles and the like adhering to the metal strip 6 by placing the electric heater 14 in the piece loading portion M and energizing and heating it when necessary. It can be heated to a high temperature, for example, about 600 to 800 ° C., and the same effect as when the truck T or the like travels at a high speed of about 80 to 100 km / h can be obtained.

According to the seventh aspect of the present invention, the cylindrical body 16 of the casing 5 is provided with the cut 10 extending from the base end to the gas vent opening 3 along the axial direction. When the cylindrical body 16 is attached to the distal end 9a, the cylindrical body 16 can be easily fitted into the distal end 9a, and the proximal end of the cylindrical body 16 is appropriately expanded and contracted with respect to the distal end 9a. The base end portion of 16 can be securely attached firmly to the exhaust pipe portion 9a.

According to the eighth aspect of the present invention, the ceramic strip is loaded in addition to the metal strip 6 to form the metal strip loading portion M, whereby the exhaust gas is heated by heating the metal strip 6 and the ceramic strip by the high-temperature exhaust gas. The fine carbon particles therein can be burned and removed more effectively.

  A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a state in which an exhaust gas purifying apparatus A according to the present invention is implemented on a truck T equipped with a diesel engine. (A) is an enlarged longitudinal sectional view of the exhaust gas purification device A, (b) is a sectional view taken along the line XX of (a), and (c) is an end view of the exhaust gas purification device A as viewed from the front.

  The exhaust gas purifying apparatus A is formed in a bottomed cylindrical shape by a cylindrical wall portion 1 and an end wall portion 2 that closes the distal end portion of the cylindrical wall portion 1. The casing 5 is made of a stainless steel casing 5 provided with a plurality of exhaust holes 4 in the end wall portion 2, and in the casing 5, an arbitrarily shaped metal strip 6 on the tip side. Are densely loaded to form a metal strip loading portion M, and an exhaust flow guide member 7 is disposed in the casing 5 on the rear side of the metal strip loading portion M. The base end portion 1o of 1 is fitted to the distal end side exhaust pipe portion 9a of the muffler 9 of the exhaust pipe 8 of the diesel engine and is detachably attached.

  The cylindrical wall portion 1 of the casing 5 has an inner diameter that is slightly larger than the outer diameter of the exhaust pipe portion 9a on the tip end side of the muffler 9, and as shown in FIG. The wall 1 is provided with a cut 10 extending from the base end to the gas vent opening 3 along the axial direction.

  If the gas vent opening 3 has only a plurality of exhaust holes 4 provided in the end wall 2 as the exhaust port of the casing 5, the air permeability in the casing 5 deteriorates and the engine performance of the engine, that is, the horsepower decreases. Therefore, in order to avoid this, as shown in FIG. 3A, the cylindrical wall portion 1 is formed in a substantially semicircular shape on the lower side surface portion.

  The opening area of the gas vent opening 3 is preferably 2/4 to 3/4 of the cross-sectional area of the cylindrical wall 1 of the casing 5. That is, if the opening area of the gas vent opening 3 is 2/4 or less of the cross-sectional area of the cylindrical wall 1, the engine performance of the engine is reduced, and the opening area is 3/4 of the cross-sectional area of the cylindrical wall 1. This is because the most important exhaust gas purification performance will be lowered.

  The metal strip 6 is preferably a stainless steel strip. This is because stainless steel is resistant to oxidation at room temperature as well as at high temperatures and can be used for a long time. Further, the metal strip 6 is not specially manufactured, and chips generated when a stainless steel material is cut by a machine tool such as a lathe are used as they are. Specifically, as shown in FIG. 3C, a curled tip piece 6a having a length of, for example, about 50 to 60 mm, a spiral piece 6b having an arbitrary length, or the like is used.

  The exhaust flow guide member 7 is a member for guiding exhaust gas that has entered the casing 5 from the exhaust pipe portion 9a at the front end side of the muffler 9 so as to smoothly flow into the metal strip loading portion M. For example, FIG. As shown in (b), the metal strip 11 is formed by winding a long metal strip 11 in a spiral shape, and punch holes 12 are formed in the metal strip 11 at a constant pitch in the longitudinal direction. . As can be seen from FIGS. 2A and 2B, the exhaust flow guide member 7 is disposed in the casing 5 on the rear side of the metal strip loading portion M in front of the gas vent opening 3. ing.

  In order to attach the casing 5 to the distal end side exhaust pipe portion 9 a of the muffler 9, the base end portion 1 o of the cylindrical wall portion 1 of the casing 5 is externally fitted to the distal end side exhaust pipe portion 9 a of the muffler 9 and an appropriate clamp 13 is attached. Tighten and fix with. In this case, the cylindrical wall portion 1 has a cut 10 extending from the proximal end thereof to the gas vent opening 3 along the axial direction, and therefore, the proximal end portion of the cylindrical wall portion 1 with respect to the exhaust pipe portion 9a. By appropriately expanding and contracting the side, the inner peripheral surface of the base end portion of the cylindrical wall portion 1 can be attached in close contact with the outer peripheral surface of the exhaust pipe portion 9a. In addition, the clamp 13 may be made of a metal belt as shown in the figure, or may be made of a metal belt. In any case, the clamp 13 can be attached to the casing 5 with a simple operation. To do.

  Next, the operation of the exhaust gas purifying apparatus A of the present invention attached to the tip side exhaust pipe portion 9a of the muffler 9 of the exhaust pipe 8 of the diesel engine of the truck T as described above will be described below.

  By the operation of the diesel engine, the exhaust gas discharged from the engine passes through the exhaust pipe 8 shown in FIG. 1, passes through the muffler 9, and is introduced into the casing 5 of the exhaust gas purification device A from the distal end side exhaust pipe portion 9 a. Will be.

Exhaust gas introduced into the casing 5, as shown by an arrow G in FIG. 2 (a), most of which go into the metal strip loading unit M in the front end portion of the casing 5, a part Exhaust gas is discharged from the opening 3 for degassing. Then, when the exhaust gas passes through the metal strip loading part M, fine carbon particles forming particularly black smoke in the exhaust gas are removed.

  Now, when the truck T is traveling at a relatively low speed of, for example, 40 to 50 km / h, the temperature of the exhaust gas introduced from the diesel engine into the casing 5 of the exhaust gas purification apparatus A is, for example, 300 to Therefore, the metal strip loading part M in the casing 5 is also heated to almost the same temperature as the exhaust gas. Thus, when the exhaust gas passes through the metal strip loading portion M, fine carbon particles in the exhaust gas adhere to and be captured by the metal strip 6, thereby exhaust holes in the end wall portion 2 of the casing 5. The exhaust gas discharged from 4 is almost colorless.

  When the truck T is traveling on a highway or the like at a high speed of 80 to 100 km / h, the temperature of exhaust gas introduced from the diesel engine into the casing 5 of the exhaust gas purification apparatus A is 700 to 800. Since the metal strip loading part M in the casing 5 is heated to almost the same temperature as the exhaust gas G, the exhaust gas passes through the metal strip loading part M. The fine carbon particles in the exhaust gas are attached to and trapped on the metal strip 6 and are burned and lost by the high heat of the metal strip 6 heated to a high temperature of 600 to 800 ° C. A slight wrinkle remains on the top.

  At this time, the water vapor contained in the exhaust gas changes to superheated steam by passing through a high temperature range of 600 to 800 ° C. This superheated steam has an effect as a catalyst that further promotes the oxidative combustion reaction of fine carbon particles, and therefore has the effect of releasing oxygen from nitrogen oxides in the exhaust gas and supplying oxygen to the fine carbon particles. . As a result, fine carbon particles and nitrogen oxides in the exhaust gas are effectively removed, and the exhaust gas can be discharged in a state of almost colorless and odorless.

  Also, when the diesel engine is cold start, the fuel is incompletely burned when the fuel is discharged as partially burned droplets due to the low temperature of the combustion chamber, or when ignition delay or ignition failure occurs. In such a case, the incomplete combustion gas passes through the hot metal strip loading portion M in the casing 5 to completely burn the incomplete combustion gas, thereby eliminating the generation of white smoke. be able to.

  Further, since a part of the exhaust gas introduced into the casing 5 is discharged from the gas vent opening 3, the air permeability in the casing 5 is maintained, and the engine performance of the engine, that is, the decrease in horsepower is avoided. The

  In the casing 5, a long metal strip 11 having punch holes 12 formed at a constant pitch in the longitudinal direction of the strip is wound in a spiral shape on the front side of the metal strip loading portion M. Since the exhaust flow guide member 7 is provided, the exhaust gas that has entered the casing 5 from the exhaust pipe portion 9a at the front end of the muffler 9 smoothly flows into the metal strip loading portion M, and a part of the exhaust gas However, the exhaust gas is discharged to such an extent that the air permeability in the casing 5 is maintained, whereby the exhaust gas purification action can be performed more effectively.

  That is, if the exhaust flow guide member 7 is not provided, the exhaust gas that has entered the casing 5 from the exhaust pipe portion 9a is diffusely reflected on the metal strip 6 of the metal strip loading portion M, and the diffusely reflected exhaust gas The flow of the exhaust gas from the base end portion to the tip end portion in the casing 5 is disturbed and the exhaust gas easily flows out from the gas vent opening 3. By providing the exhaust flow guide member 7, the casing The exhaust gas from the base end portion in 5 is diffusely reflected on the metal strip 6 of the metal strip loading portion M by passing through the exhaust flow guide member 7 formed by winding the metal strip 11 in a spiral shape. The exhaust gas that has passed through the metal strip loading portion M as it is, and the diffusely reflected exhaust gas hits the side surface of the metal strip 11 of the exhaust flow guide member 7 or passes through the punch holes 12 of the strip 11. By And abolished the turbulence of the gas flow due to diffused reflection, made to pass through the metal strip loading unit M. As a result, the exhaust gas flowing from the base end portion to the tip end portion in the casing 5 flows straight into the metal strip loading portion M as it is without disturbing the flow on the front side of the metal strip loading portion M, A small amount of exhaust gas is discharged from the gas vent opening 3 to such an extent that the air permeability in the casing 5 is maintained. The metal strip 11 forming the exhaust flow guide member 7 is provided with a punch hole 12, but the punch hole 12 may not be provided.

  Further, in this exhaust gas purifying apparatus A, the base end portion 1o of the cylindrical wall portion 1 of the casing 5 is fitted into the distal end side exhaust pipe portion 9a of the muffler 9 so as to be detachably attached. 5 is removed as appropriate, and a spray solution of neutral detergent is sprayed on the casing 5 and the metal strip loading portion M and the exhaust flow guide member 7 in the casing 5, and then washed with water to wash the metal strip loading portion M. The fine carbon particles adhering and remaining on the metal strip 6 and the exhaust flow guide member 7 can be easily removed by washing, and can be used again in a clean state.

  When the casing 5 is removed, it is only necessary to loosen the clamp 13, and the removal and attachment work is very simple and easy. Therefore, the casing 5 can be frequently cleaned every day, so that the exhaust gas purification action is always effectively performed. be able to.

  According to this exhaust gas purification apparatus A, it is possible to remove 60 to 70% of the black smoke discharged from the diesel engine.

  FIG. 4 (a) shows another exhaust gas purification device B according to the present invention, which is almost the same as the exhaust gas purification device A shown in FIGS. The difference is that the electric heater 14 is inserted and arranged in the metal strip loading portion M of the casing 5 which is energized and heated when necessary, in the metal strip loading portion. This is the same as the exhaust gas purification device A.

  That is, as described above, when the truck T or the like is traveling in an urban area at about 40 to 50 km / h, the temperature of the exhaust gas introduced from the engine into the casing 5 of the exhaust gas purification apparatus A is 300 to 400. Since the carbon particles and the like adhering to the metal strip 6 of the metal strip loading part M cannot be burned, the electric heater 14 is inserted and disposed in the metal strip loading part M. The temperature of the metal strip loading unit M is raised to about 600 to 800 ° C. by energizing and heating when necessary.

The electric heater 14 is made of, for example, a stainless steel wire 14a having a diameter of 6 mm. The steel wire 14a is wound two to three times in a spiral shape so as to be inserted into the casing 5 as shown in the figure. 4a is fixed to a required portion of the casing 5 (ground connection), and the other end of the steel wire 14a and the casing 5 are connected and connected to the battery 15 of the truck T.
The electrical circuit as shown in FIG. 1 is configured, and when necessary, the switch 16 is closed to heat it to a required temperature, for example, about 600 to 800 ° C. Further, a helical piece 6b (see FIG. 3 (c)) as a metal strip 6 is fitted to the stainless steel wire 14a, and a curled tip piece 6a is interposed between the helical pieces 6b. (See (c) of FIG. 3). The heating time of the heater 14 may be about 20 seconds.

  The switch 16 of the electric heater 14 is linked to, for example, a brake pedal in the driver's seat of the truck T, and the switch 16 is turned on when the driver steps on the brake pedal to apply the brake while traveling. For example, it is very convenient to set the heater 14 so as to heat it for 20 seconds.

  FIG. 5A shows still another exhaust gas purification device C. FIG. The exhaust gas purification device C includes a cylindrical main body 16 and a bottomed cylindrical end casing 17 that is fitted to the tip of the cylindrical main body 16 and is detachably attached. A gas vent opening 3 is provided in a required portion, and a casing 5 having a plurality of exhaust holes 4 provided in an end wall portion 18 of the end casing 17 is provided. An arbitrary shape is provided in the end casing 17 of the casing 5. The metal strips 6 are densely loaded to form the metal strip loading portion M, and a number of punch holes 12 are formed on the front side of the metal strip loading portion M as shown in FIG. An exhaust flow guide member 7 formed by spirally winding an elongated metal strip 11 is disposed, and a base end portion 16o of a cylindrical main body 16 of the casing 5 is disposed on a diesel engine as shown in FIG. The exhaust pipe 8 has a muffler 9 with a front end side exhaust pipe portion 9a. The fitting is detachably attached by a clamp 13 made of a metal belt.

  An electric heater 14 as shown in FIG. 4 is inserted and disposed in a metal strip loading portion M formed by loading the metal strip 6 into the end casing 17 of the exhaust gas purification device C, and when necessary. You may make it energize and heat.

  Further, the cylindrical body 16 of the casing 5 has a cut 10 extending from the base end to the gas vent opening 3 along the axial direction, so that the tip end portion of the casing 5 is attached to the tip end portion 9a of the exhaust pipe. It becomes easy to fit the cylindrical main body 16 into the 9a, and the base end side inner peripheral surface of the cylindrical main body 16 is exhausted by appropriately expanding and contracting the base end side of the cylindrical main body 16 with respect to the tip end portion 9a. The tube portion 9a can be securely attached to the outer peripheral surface of the tube portion 9a.

  In this exhaust gas purifying device C, a metal strip loading part M is formed in the end casing 17 of the casing 5, and an exhaust flow guide member 7 is provided on the front side of the metal strip loading part M. Since the base end side of the end casing 17 is detachably attached to the distal end portion of the cylindrical main body 16 with, for example, screws 19, the cylindrical main body 16 is removed from the exhaust pipe portion 9a on the distal end side of the muffler 9 during cleaning. There is no need to remove it, and only the end casing 17 is removed from the cylindrical main body 16 and the end casing 17 is immersed in the cleaning liquid. Therefore, cleaning is easy and easy, and it can be cleaned every day, which is very convenient. FIG. 5B shows a state where the base end portion of the end casing 17 that has been cleaned is fitted into the distal end portion of the cylindrical main body 16 to be attached. Note that the method of attaching the end casing 17 to the tip of the cylindrical body 16 is not limited to a screw, and may be a screwing method using screws.

Or any the exhaust gas purifying device shown in FIGS. 1-5 embodiment described, but the casing 5 is obtained to attach detachably to the distal end of the exhaust pipe of an internal combustion engine, FIG. 6 Exhaust gas purification apparatuses D and E are shown in which a casing 5 is coupled to the tip of an exhaust pipe of an internal combustion engine.

An exhaust gas purification device D shown in FIG. 6 (a) is formed in a bottomed cylindrical shape by a cylindrical wall portion 1 and a hemispherical end wall portion 2 that closes the tip of the cylindrical wall portion 1, and the axial direction of the cylindrical wall portion 1 A casing 5 in which a gas vent opening 3 is provided in an intermediate portion and a plurality of exhaust holes 4 are provided in an end wall portion 2 is formed integrally or integrally with a distal end side exhaust pipe portion 9a of a muffler 9. The structure of the purification device itself is the same as that of the exhaust gas purification devices A and B shown in FIGS. 2 to 4, and metal strips 6 having an arbitrary shape are densely loaded on the tip side in the casing 5. An exhaust flow guide member 7 for guiding the flow of exhaust gas entering the casing 5 from the exhaust pipe of the internal combustion engine into the metal strip loading portion M is provided on the front side of the metal strip loading portion M. An electric heater 14 is inserted and arranged in the metal strip loading unit M. According to the exhaust gas purification device D, the purification device can be installed at the time of manufacturing a truck or the like.

The exhaust gas purifying device E shown in FIG. 6 (b) includes a cylindrical main body 16 and a bottomed cylindrical end casing 17 that is detachably attached to the tip of the cylindrical main body 16, and has a cylindrical shape. The cylindrical main body 16 of the casing 5, in which the degassing opening 3 is provided in a required portion of the main body 16 and a plurality of exhaust holes are provided in the end wall portion 18 of the end casing 17, is connected to the distal end portion 9 a of the exhaust pipe. The structure of the purification device itself is the same as that of the exhaust gas purification device C shown in FIG. 5, and metal strips 6 of arbitrary shape are densely loaded in the end casing 17 of the casing 5. In addition, an exhaust flow guide member 7 for guiding the flow of exhaust gas entering the casing 5 from the exhaust pipe of the internal combustion engine into the metal strip loading portion M is provided on the front side of the metal strip loading portion M. Yes. Further, an electric heater 14 as shown in FIG. 4 is inserted and arranged in a metal strip loading portion M formed by loading the metal strip 6 into the end casing 17 of the exhaust gas purification device E, and when necessary, You may make it energize and heat.

  According to the exhaust gas purification device E, the purification device can be installed at the time of manufacturing a truck or the like as in the exhaust gas purification device D, and the end casing 17 is removed from the cylindrical body 16 at the time of cleaning. Since the end casing 17 may be cleaned by immersing it in a cleaning solution, the cleaning is simple and easy.

Further, in the exhaust gas purifying apparatuses A to E described above with reference to FIGS. 1 to 6 , the metal strips 6 having an arbitrary shape are densely loaded in the tip end side of the casing 5 or in the end casing 17 of the casing 5. Although the metal strip loading portion M is formed, the metal strip loading portion M can be loaded with ceramic pieces other than the metal strip 6. That is, by loading a ceramic piece in addition to the metal piece 6 to form the metal piece loading part M, the fine carbon particles in the exhaust gas are heated by heating the metal piece 6 and the ceramic piece by the high-temperature exhaust gas. It can be burned and removed more effectively.

FIG. 1 is a side view of an exhaust gas purifying apparatus according to the present invention implemented on a truck equipped with a diesel engine. (a) is an enlarged longitudinal sectional view of the exhaust gas purification device, (b) is a sectional view taken along line XX of (a), and (c) is an end view of the exhaust gas purification device as viewed from the front. 2A is a bottom view of the exhaust gas purification device shown in FIG. 2A viewed from below, FIG. 2B is a perspective view showing an exhaust flow guide member, and the storage portion 1 is a perspective view showing a metal strip. . (a) is a longitudinal sectional view showing another exhaust gas purifying apparatus according to the present invention, and (b) is an electric circuit diagram of an electric heater. (a) is a partial longitudinal sectional view showing still another exhaust gas purification device, and (b) is an explanatory view showing a state in which an end casing is fitted into a cylindrical main body to be attached. (a), (b) is a side view which shows the further another exhaust gas purification apparatus of this invention .

Explanation of symbols

A to E Exhaust gas purification apparatus 1 Cylindrical wall 1a of the casing Base end 2 of the cylindrical wall 2 End wall 3 of the casing 3 Gas vent opening 4 Exhaust hole 5 Casing 6 Metal strip 7 Exhaust flow guide member M Metal thin Piece loading portion 10 Cut 11 Metal strip 14 Heater 16 Cylindrical body 17 End casing

Claims (8)

A cylindrical wall portion and an end wall portion that closes the tip of the cylindrical wall portion are formed into a bottomed cylindrical shape, a gas vent opening is provided at an axially intermediate portion of the cylindrical wall portion, and a plurality of exhaust holes are formed in the end wall portion. The provided casing is coupled to the tip of the exhaust pipe of the internal combustion engine, and metal strips having an arbitrary shape are densely loaded on the tip side in the casing, and the internal combustion engine is on the front side of the metal strip loading portion. An exhaust flow guide member for guiding the flow of exhaust gas entering the casing from the exhaust pipe into the metal strip loading portion is provided , and the exhaust flow guide member is formed by winding a long metal strip in a spiral shape. exhaust gas purification system of an internal combustion engine consisting of the thing. A cylindrical wall portion and an end wall portion that closes the tip of the cylindrical wall portion are formed into a bottomed cylindrical shape, a gas vent opening is provided at an axially intermediate portion of the cylindrical wall portion, and a plurality of exhaust holes are formed in the end wall portion. A metal strip having an arbitrary shape is densely loaded on the front end portion side of the casing, and the exhaust gas that has entered the casing from the exhaust pipe of the internal combustion engine is placed on the front side of the metal strip loading portion. An exhaust flow guide member for guiding the flow of metal into the metal strip loading portion is provided , and the exhaust flow guide member is formed by winding a long metal strip in a spiral shape, and thus the cylindrical wall of the casing An exhaust gas purifying device for an internal combustion engine in which a base end portion of the engine is detachably attached to a distal end portion of an exhaust pipe of the internal combustion engine.   The exhaust gas purifying device for an internal combustion engine according to claim 2, wherein a cut is formed in the cylindrical wall portion of the casing from the base end to the gas vent opening along the axial direction. A cylindrical main body and a bottomed cylindrical end casing that is detachably attached to the tip of the cylindrical main body, and a gas vent opening is provided in a required portion of the cylindrical main body. A cylindrical main body of a casing in which a plurality of exhaust holes are provided in an end wall portion is coupled to a distal end portion of an exhaust pipe of an internal combustion engine, and metal strips having an arbitrary shape are densely loaded in the end casing of the casing. In addition, an exhaust flow guide member for guiding the flow of exhaust gas entering the casing from the exhaust pipe of the internal combustion engine into the metal strip loading portion is provided on the front side of the metal strip loading portion, and the exhaust flow guide member Is an exhaust gas purifying device for an internal combustion engine comprising a long metal strip wound in a spiral shape . A cylindrical main body and a bottomed cylindrical end casing that is detachably attached to the tip of the cylindrical main body, and a gas vent opening is provided in a required portion of the cylindrical main body. A casing having a plurality of exhaust holes in the end wall portion is provided, and metal strips having an arbitrary shape are densely loaded in the end casing of the casing, and an internal combustion engine is disposed on the front side of the metal strip loading portion. An exhaust flow guide member for guiding the flow of exhaust gas entering the casing from the exhaust pipe into the metal strip loading portion is provided , and the exhaust flow guide member is formed by winding a long metal strip in a spiral shape. made ones, Thus the exhaust gas purifying apparatus of an internal combustion engine to attach the base end portion of the cylindrical body of the casing detachably to the distal end of an exhaust pipe of an internal combustion engine.   The exhaust gas purifying apparatus for an internal combustion engine according to any one of claims 1 to 5, wherein an electric heater is inserted and disposed in the metal strip loading section, and is energized and heated when necessary.   The exhaust gas purification apparatus for an internal combustion engine according to claim 5 or 6, wherein the cylindrical main body of the casing is provided with a cut from the base end to the gas vent opening along the axial direction. The exhaust gas purifying device for an internal combustion engine according to any one of claims 1 to 7 , wherein a ceramic piece is loaded in the metal strip loading section in addition to the metal strip.

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