TWM567807U - Metal honeycomb carrier catalyst conversion device for diesel engine - Google Patents

Abstract

The present invention relates to a metal honeycomb carrier catalyst conversion device for a diesel engine. The main structure comprises an outer casing having an intake pipe and an exhaust pipe, at least one catalytic converter, an intake air chamber, and a An outlet air chamber and at least one transition air chamber, and the catalyst conversion device comprises a positioning housing, a thermal conductive sheet body, a metal catalyst layer and a gas passage. According to the above structure, in addition to the redox reaction of the exhaust gas in the catalytic converter, the metal catalyst layer can be used for the redox reaction, and the exhaust gas can be recirculated in the gas chamber to increase the collision probability and retention time of the air molecules and the carbon particles. In order to increase the temperature of the gas, in particular, each of the gas chambers is adjacent to the catalytic converter, which is easy to conduct heat, and the exhaust gas can enter and exit the same catalytic converter at least twice, and can directly pass through the thermal conductive sheet. Quickly increase the overall temperature.

Description

Metal honeycomb carrier catalyst conversion device for diesel engine

The utility model provides a metal honeycomb carrier catalyst conversion device for a diesel engine, in particular to a diesel engine which can quickly raise the temperature of the structure to effectively reduce air pollution, and has the characteristics of easy maintenance and long service life. Metal honeycomb carrier catalyst conversion device.

According to the diesel engine, the fuel economy efficiency is better, so that the carbon dioxide emission can be reduced, and the diesel engine can provide high torque characteristics when operating at low and medium speeds, which provides better practicality for daily driving. On the contrary, he also has high pollution problems, including carbon monoxide (CO), hydrocarbons (HC) caused by incomplete combustion, and carbon particles-based aerosols produced by combustion of long carbon chain organic compounds. (SS) and ultrafine aerosols (PM2.5), together with nitrogen oxides (NOx, which are the main cause of light smoke) produced at high temperatures and pressures.

The air pollution treatment method of the conventional diesel engine can be achieved by filtering the suspended particles, treating the carbon monoxide and hydrocarbons by oxidation reaction, or treating the nitrogen oxides by the reduction reaction by setting the filter core and the catalytic effect. Please also refer to the technology contained in the Republic of China Patent No. I374216, "The Exhaust Pipe of a Locomotive with Multiple Catalytic Converters". It is a series of two catalysts with different diameters, so that the air enters and exits the two catalysts one after the other, increasing the big touch. The initial temperature of the medium, and the second catalyst can introduce air through the channel beside the small catalyst, so that the plurality of catalytic converters connected in series can obtain fresh air for conversion.

However, when the air pollution treatment method of the above diesel engine is used, the following problems and defects are still to be improved:

1. A device using a non-metallic material carrier carrier: during the operation of the engine, sufficient temperature cannot be generated to automatically burn and remove pollutants such as carbon particles in the exhaust gas, so that a supplemental combustion system must be added to provide regeneration and removal effects, and In the combustion process, it is easy to control the temperature due to uneven temperature, resulting in the loss of non-metallic catalyst carrier.

Second, the use of metal material catalyst carrier device: exhaust gas only one-time one-way through each catalyst carrier Although the body and the air chamber can be warmed in stages, they cannot effectively accumulate enough heat energy to achieve the high temperature environment required for automatic combustion to remove pollutants such as carbon particles, resulting in poor removal efficiency; and the heat energy of the high temperature gas generated in the last stage is not It is a pity that the effective recirculation is used to allow the hot air to be directly discharged into the outside air.

Therefore, how to solve the above problems and problems in the past, that is, the creators of the new type and the relevant manufacturers engaged in this industry are eager to study the direction of improvement.

Therefore, in view of the above-mentioned deficiencies, the creators of this new model have collected relevant information, and through multi-party evaluation and consideration, and through years of experience in the industry, through continuous trial and modification, this design can quickly improve the structural body temperature. A new patent for metal honeycomb carrier catalyst conversion devices for diesel engines that is effective in reducing air pollution and has characteristics such as easy maintenance and long service life.

The main purpose of the novel is to allow the exhaust gas to enter and exit the same catalytic converter multiple times, perform multiple oxidation-reduction reactions, and use the structure of each heat-conducting sheet body to directly conduct heat conduction in the catalyst conversion device, and rapidly increase the heat. temperature reflex.

Another main purpose of the present invention is to generate a gas rewinding effect in the gas chamber to increase the gas residence time, increase the contact of the air molecules, and absorb the heat energy of the high temperature gas chamber, thereby causing the carbon particles to kill the volume due to the collision. The combustion is more complete, and the temperature of the airflow is increased, and the heat of the high temperature air chamber is utilized to accelerate the temperature rise of the overall structure by the characteristics of the gas chambers adjacent to each other.

In order to achieve the above object, the main structure of the present invention comprises: an outer casing having an intake pipe for introducing exhaust gas and an exhaust pipe for exhausting exhaust gas, and having at least one contact in the outer casing a media conversion device, the catalyst conversion device comprises a plurality of layered and separately formed positioning housings, and a plurality of thermal conductive sheets respectively disposed between the positioning housings, which are continuously bent to interfere with adjacent ones The two positioning housings are formed in the bending space of each of the thermal conductive sheets to form a plurality of gas passages for guiding the front and rear ends of the catalytic converter, wherein the surface of the thermal conductive sheet defines at least one metal catalyst layer, and the catalyst One side of the conversion device has an inlet air chamber communicating with the gas passage of the intake pipe and a portion, and an outlet air chamber communicating with the gas passage of the exhaust pipe and another portion, and at least one side of the catalyst conversion device Forming at least one transitional plenum that communicates with the intake plenum, the catalytic converter, and the plenum.

When the user uses the present invention to perform the air pollution treatment of the diesel engine, the exhaust gas is introduced into the outer casing by the intake pipe, and the exhaust gas is retained in the intake air chamber and connected to the rear end of the at least one catalytic converter, and The catalyst conversion device transmits a plurality of thermally conductive sheets having a metal catalyst layer, and by platinum, palladium, The content of strontium is adjusted so that the exhaust gas entering the catalytic converter for the first time can be flashed at 180 ° C or higher to carry out a redox reaction, and the continuous bending of the thermally conductive sheet body respectively interferes with the adjacent positioning housing, so as to a plurality of gas passages are formed in the bending space of the heat-conducting sheet body, so that the treated exhaust gas is directly passed from the rear end of the catalytic converter to the front end of the catalytic converter, and then the exhaust gas is output from the front end of the catalytic converter and is retained in at least one transition In the air chamber, the exhaust gas in the transition air chamber is again entered into the catalytic converter, and finally, the exhaust gas is output from the rear end of the catalytic converter and is retained in an air outlet chamber, and the exhaust gas is exhausted by an exhaust pipe. The outlet air chamber leads to the outer casing. Thereby, the exhaust gas is recirculated between the gas chambers and the catalytic converter, and the collision probability of the carbon particles with the air molecules or the structure is increased, the carbon particles become finer, more flammable, and the temperature of the adjacent gas chamber is utilized. The temperature difference between the difference and the successively entering and exiting the catalyst conversion device reaches a rapid temperature rise and temperature balance of the overall structure between the gas chamber and the catalyst conversion device, thereby greatly improving the effect of the exhaust gas treatment.

According to the above technology, the air pollution treatment mode of the conventional diesel engine may be insufficient in the previous stage, the exhaust gas treatment is incomplete, the effective reaction zone is too small or limited to the rear stage, the combustion temperature is not easy to control, and the catalyst is deactivated, and Failure to effectively use the thermal energy in the high temperature zone to break through, to achieve the practical advancement of the above advantages.

1‧‧‧ outer casing

11‧‧‧Insulation

2, 2a, 2b, 2c‧‧‧ intake pipe

3, 3a, 3b, 3c‧‧‧ exhaust pipe

31‧‧‧Exhaust restriction

4, 4a, 4b, 4c‧‧‧catalyst conversion device

401a, 401b‧‧‧ first catalyst

402a, 402b‧‧‧second catalyst

403b‧‧‧ Third Catalyst

404b‧‧‧Fourth catalyst

405b‧‧‧ fifth catalyst

41‧‧‧ Positioning housing

42‧‧‧thermal sheet

421‧‧‧Metal catalyst layer

43‧‧‧ gas passage

431‧‧‧First Passage

432‧‧‧second channel

44b‧‧‧Connected air chamber

4411b‧‧‧Connected air chamber

4412b‧‧‧Connected air chamber

4421b‧‧‧Connected air chamber

4422b‧‧‧Connected air chamber

4431b‧‧‧Connected air chamber

4432b‧‧‧Connected air chamber

4441b‧‧‧Connected air chamber

4442b‧‧‧Connected air chamber

5, 5a, 5b, 5c‧‧‧ intake air chamber

6, 6a, 6b, 6c‧‧‧ gas chamber

61, 61a, 61b, 61c‧‧‧ equal temperature chamber

7, 7a, 7b‧‧‧ transitional air chamber

71a, 71c‧‧‧ first air chamber

72a, 72c‧‧‧ second air chamber

73a‧‧‧ third air chamber

81‧‧‧Isolation components

82‧‧‧Drainage baffle

83‧‧‧ Thermal fins

831‧‧‧heat-absorbing fins

832‧‧‧Heat fins

The first figure is a perspective view of a preferred embodiment of the present invention.

The second drawing is another perspective perspective view of the preferred embodiment of the present invention.

The third drawing is a front view of the preferred embodiment of the present invention.

The fourth drawing is a cross-sectional view taken along line A-A of the first drawing of the present invention.

Figure 5 is a schematic illustration of the airflow path of the preferred embodiment of the present invention.

Figure 6 is a schematic view (I) of the implementation of the preferred embodiment of the present invention.

The seventh figure is a schematic diagram (2) of the implementation of the preferred embodiment of the present invention.

The eighth figure is a schematic diagram (3) of the implementation of the preferred embodiment of the present invention.

Figure 9 is a schematic view showing the implementation of still another preferred embodiment of the present invention.

Figure 10 is a schematic view showing the implementation of still another preferred embodiment of the present invention.

Figure 11 is a schematic view showing the implementation of another preferred embodiment of the present invention.

In order to achieve the above objects and effects, the technical means and structure adopted by the present invention are described in detail in the preferred embodiment of the present invention, and the features and functions thereof are as follows.

Please refer to the first to fourth figures, which are perspective views of the preferred embodiment of the present invention, taken along the line AA of the first drawing. It can be clearly seen from the figure that the present invention includes: an outer casing 1, The outer casing 1 is made of a metal material, and the outer casing 1 has at least one heat insulating layer 11; an air inlet pipe 2 disposed on the outer casing 1 is for introducing exhaust gas; and a casing body 1 is disposed away from the outer casing 1 The exhaust pipe 3 on the side of the intake pipe 2 is for exhausting the exhaust gas, and the exhaust pipe 3 is formed in an air outlet chamber 6 to form an air outlet restricting portion 31 for reducing the exhaust gas discharge. At least one of the catalytic converters 4, which are disposed in the outer casing 1 and have a honeycomb shape, are provided with a plurality of layered and partially formed positioning housings 41, and a plurality of positioning housings 41 are respectively disposed on the housings 41. The heat-conducting sheet 42 is continuously bent to be in contact with the adjacent two positioning housings 41 to form a plurality of gases for guiding the front and rear ends of the catalyst conversion device 4 in the bending space of each of the thermal conductive sheets 42. a channel 43; at least one metal catalyst layer 421 defined on the surface of the heat conductive sheet 42, the metal catalyst layer 421 The system comprises platinum, palladium or rhodium; an inlet gas chamber 5 formed on one side of the catalyst conversion device 4 is connected to the gas inlet tube 2 and a part of the gas passage 43; and is formed in the catalyst conversion device 4 The outlet air chamber 6 is connected to the exhaust pipe 3 and another part of the gas passage 43. The outlet air chamber 6 includes a temperature equalizing chamber 61 adjacent to the inlet air chamber 5; at least one is disposed at The air inlet chamber 5 and the partitioning member 81 of the side wall of the air outlet chamber 6 are for convection of gas between the blocking chambers; at least one is formed at at least one side of the catalyst converting device 4 and communicates with the air inlet chamber 5 The catalyst conversion device 4 and the transition air chamber 7 of the air outlet chamber 6; at least one heat transfer fin 83 is disposed in the air inlet chamber 5, the air outlet chamber 6, the transition air chamber 7, or the a temperature between the two of the temperature equalizing chambers 61 to accelerate the transfer of heat; and at least one of the deflecting partitions 82 disposed in the transition chamber 7 or the outlet chamber 6 for changing the gas flow direction and Lengthen the airflow path.

The cross-sectional area of the intake pipe 2 is smaller than the cross-sectional area of the intake air chamber 5, and the cross-sectional area of the output end of the catalytic converter 4 is smaller than the cross-sectional area of each of the transitional air chambers 7 and the outlet air chamber 6 Cross-sectional area.

Through the above description, the structure of the present technology can be understood, and according to the corresponding cooperation of the structure, the temperature of the structure body can be quickly increased to effectively reduce air pollution, and has the advantages of easy maintenance and long service life, and detailed The explanation will be explained below.

Please refer to the first to eighth embodiments at the same time, which is a perspective view to the implementation diagram (3) of the preferred embodiment of the present invention. When the above components are assembled, it can be clearly seen from the figure that the present invention The catalyst conversion device 4 is implemented in the form of a cylinder. Therefore, the positioning housings 41 are arranged in a concentric manner and are formed around each other, and the thermal conductive sheets 42 are continuously bent in a wave shape between the layers. And dividing the plurality of gas passages 43 into a first passage 431 that communicates with the intake air chamber 5 and the transition air chamber 7, and a second passage 432 that connects the outlet air chamber 6 and the transition air chamber 7, and the catalyst in this embodiment The conversion device 4 and the transition plenum 7 are exemplified by the number one.

In actual use, the exhaust gas generated by the diesel engine is guided to the intake air chamber 5 in the outer casing 1 via the intake pipe 2, because the cross-sectional area of the intake pipe 2 is smaller than the cross-sectional area of the intake air chamber 5. Therefore, when the exhaust gas enters a large space, the flow velocity is immediately reduced. At this time, based on the law of energy extinction, the decrease of the gas flow energy will cause the heat energy of the airflow to increase, and although the intake air chamber 5 is connected to the gas passage 43 However, since the gas flow introduced into the intake air chamber 5 is completely opposite to the inlet direction of the gas passage 43, the gas cannot smoothly enter the catalytic converter 4, but must be bypassed in the intake air chamber 5 before entering. This increases the residence time of the exhaust gas in the intake air chamber 5 and the probability that the air molecules contact and absorb the heat energy of the high temperature air chamber (the high temperature generated from the latter stage will be described below), and of course, the carbon particles and the air are also increased. The collision of the molecules, the gas chamber wall and the catalytic converter 4, and the collision effect will cause the carbon particles to wear more compactly, so that the carbon particles can be burned more completely, thereby improving the removal efficiency of the carbon particles, and Air flow temperature (about 200 degrees).

The catalyst conversion device 4 has an isolation element 81 on the side of the intake air chamber 5, in addition to avoiding the flow of exhaust gas to other air chambers, and at the same time restricting the exhaust gas from flowing only to the first passage 431, and bending due to the heat conductive sheet 42 The manners are respectively in contact with the adjacent two positioning housings 41, so that each of the gas passages 43 can be independently connected to the front and rear ends of the catalytic converter 4 without overflowing to the other gas passages 43 internally. At this time, the exhaust gas is in the catalyst conversion device 4, by contacting the metal catalyst layer 421 on the surface of the thermal conductive sheet 42 and the adjustment of the ratio of platinum, palladium or rhodium (in which the content of the platinum metal is increased to reduce The ignition point of the exhaust gas is about 180 ° C), so that the first time the exhaust gas can enter the catalytic converter 4, the first redox reaction occurs, and heat energy is generated. (The metal element such as platinum or palladium is oxidized with hydrocarbon or carbon monoxide. Reaction, and reduction reaction using ruthenium metal element and nitrogen oxide), and catalytic converter 4 The temperature is raised to approximately 300 degrees.

When the exhaust gas flows into the transition air chamber 7, a drain baffle 82 is disposed between the outlet end of the first passage 431 and the inlet end of the second passage 432, so that the exhaust gas flowing out of the catalytic converter 4 cannot directly enter the second passage 432. Through the isolation effect of the drainage baffle 82, the flow direction of the gas is changed, and the exhaust gas must be repeatedly entangled in the transition air chamber 7 before being diffused to the second passage 432, which can be raised again in the transition air chamber 7. The temperature of the airflow (about 350 degrees), the principle of temperature rise, please refer to the preceding paragraph.

Before the exhaust gas enters the catalyst conversion device 4 via the second passage 432, the catalyst conversion device 4 has passed through the temperature increasing effect of the first oxidation-reduction reaction, and the heat conduction effect of the thermally conductive sheet 42 integrally formed by continuously bending each other. The heat generated at the first passage 431 is directly transmitted to the thermal conductive sheet 42 where the second passage 432 is located through the thermal conductive sheet 42 , thereby achieving the effect of preheating the metal catalyst layer 421 at the second passage 432. The heat conductive sheet 42 is made of an alloy of iron, chromium and aluminum, so that the catalyst conversion device 4 can perform rapid heat conduction inside. When the exhaust gas enters the catalyst conversion device 4 through the second passage 432 for a second time, the oxidation-reduction reaction can be performed again. For the operation principle, refer to the above paragraph (at this time, the temperature of the catalyst conversion device 4 is raised to about 400 degrees). Similarly, the temperature of the second redox reaction reached at the second passage 432 can also be transmitted back to the first passage 431 through the thermal conductive sheet 42 to rapidly increase the overall temperature of the catalytic converter 4.

After the exhaust gas flows out of the catalytic converter 4 through the second passage 432, it enters the outlet air chamber 6, and also because the drainage partition 82 is provided in the outlet air chamber 6, the airflow cannot smoothly flow out of the exhaust pipe 3, and the airflow is bypassed. The effect is to increase the collision of the carbon particles (same as described above) and to allow the high temperature gas to remain in the outlet gas chamber 6 for a longer period of time, and to raise the temperature of the gas stream again (about 450 degrees), and to conduct the heat energy to the adjacent region through the isolation member 81. The intake air chamber 5 is used to rapidly raise the temperature of the intake air chamber 5, and further contributes to the removal of hydrocarbons and carbon monoxide and the purification efficiency of the exhaust gas.

In addition, the air outlet chamber 6 further includes a temperature equalizing air chamber 61 disposed adjacent to the air inlet chamber 5 to increase the contact area of the air chamber 6 to conduct high heat energy to the lower temperature air inlet chamber 5, and The air outlet restricting portion 31 formed in the temperature equalizing air chamber 61 is protruded so that the gas cannot smoothly flow out of the exhaust pipe 3, and the opening of the exhaust pipe 3 can be found only after climbing along the wall surface of the air outlet restricting portion 31. In order to reduce the fluency of the gas discharge, the time during which heat is conducted to the intake air chamber 5 is prolonged.

Even the heat-conducting fins 83 may be disposed on the wall surface adjacent to the air-heating chamber 61 and the air-intake chamber 5. The heat-conducting fins 83 of the present embodiment are the heat-absorbing fins 831 on the side of the temperature-enhancing air chamber 61, and The heat dissipating fins 832 on one side of the air chamber 5 are configured to assist the high temperature uniform temperature chamber 61 to quickly dissipate heat It is conducted to the intake air chamber 5 having a lower temperature, so that the heat conduction effect of the temperature equalizing air chamber 61 and the intake air chamber 5 can be raised again. Of course, the heat-conducting fins 83 may also be disposed between other air chambers having a temperature difference, such as between the air-exhaust air chamber 6 and the transition air chamber 7, or between the transition air chamber 7 and the air inlet chamber 5.

In addition, the outer casing 1 is made of stainless steel in this embodiment. In addition to the high temperature resistance, it also has the effect of heat conduction, and cooperates with the heat insulation layer 11 on the outer casing 1 (in this embodiment, the heat insulating cotton). It can also reduce the loss of heat, and quickly improve and maintain the high temperature state of the entire structure.

Please also refer to the ninth figure, which is a schematic diagram of the implementation of the further preferred embodiment of the present invention. It can be clearly seen from the figure that the embodiment is similar to the above embodiment, and only the catalyst conversion device 4a is added. The number is two (the first catalyst 401a and the second catalyst 402a are arranged side by side), and the number of the transition air chambers 7a is increased by three (the first air chamber 71a, the second air chamber 72a, and the third air chamber 73a). . Accordingly, after the air flow path is changed, the intake pipe 2a, the intake air chamber 5a, the first catalyst 401a, the first air chamber 71a, the first catalyst 401a, the second air chamber 72a, and the second catalyst are sequentially 402a, a third air chamber 73a, a second catalyst 402a, an air outlet chamber 6a, a temperature equalizing air chamber 61a, and an exhaust pipe 3a.

Please also refer to the tenth figure, which is a schematic diagram of the implementation of another preferred embodiment of the present invention. It can be clearly seen from the figure that the embodiment is similar to the above embodiment, and only the catalyst conversion device 4b is added. The number is five and is arranged in series with each other (first to fifth catalysts 401b, 402b, 403b, 404b, 405b), and the catalyst conversion device 4b having a mesh number of 100 to 1000 can be selected respectively. The catalyst conversion device 4b has a connection air chamber 44b. Of course, the connection air chamber 44b is also spaced apart from the first passage and the second passage. Accordingly, after the air flow path is changed, the intake pipe 2b, the intake air chamber 5b, the first catalyst 401b, the connection air chamber 4411b, the second catalyst 402b, the connection air chamber 4421b, and the third catalyst 403b are sequentially The connection air chamber 4431b, the fourth catalyst 404b, the connection air chamber 4441b, the fifth catalyst 405b, the transition air chamber 7b, the fifth catalyst 405b, the connection air chamber 4442b, the fourth catalyst 404b, the connection air chamber 4432b, and the The three catalysts 403b, the connection air chamber 4422b, the second catalyst 402b, the connection air chamber 4412b, the first catalyst 401b, the outlet air chamber 6b, the temperature equalizing air chamber 61b, and the exhaust pipe 3b.

Please also refer to the eleventh figure, which is a schematic diagram of another preferred embodiment of the present invention. It can be clearly seen from the figure that the embodiment is similar to the above embodiment, and only the transition chamber is added. The number is two (the first air chamber 71c and the second air chamber 72c), but the catalyst conversion device 4c is maintained. The quantity is one. Accordingly, after the air flow path is changed, the intake pipe 2c, the intake air chamber 5c, the catalyst conversion device 4c, the first air chamber 71c, the catalyst conversion device 4c, the second air chamber 72c, and the catalytic converter 4c, an air outlet chamber 6c, a temperature equalizing air chamber 61c, and an exhaust pipe 3c.

However, the above description is only the preferred embodiment of the present invention, and thus does not limit the scope of the patent of the present invention. Therefore, all the simple modifications and equivalent structural changes that are made by using the present specification and the drawings are the same. It is included in the scope of this new patent and is given to Chen Ming.

Therefore, the key technology of the metal honeycomb carrier catalyst conversion device 4 and the method thereof for the diesel engine of the present invention is to improve the conventional technology:

1. The catalytic converter 4 of metal material can perform oxidation-reduction reaction on the exhaust gas to reduce the replacement rate of the filter core, and also make it easier to maintain and have a longer service life.

2. By the effect of the isolation element 81, the exhaust gas can enter and exit the same catalyst conversion device 4 at least twice, so that each of the heat conduction sheets 42 in the catalyst conversion device 4 passes through the high-temperature and low-temperature exhaust gas, and cooperates with The heat conduction of the thermally conductive sheet body 42 itself rapidly increases the temperature of the entire catalyst conversion device 4.

Third, the use of gas rewinding causes the air molecules to contact and absorb the heat energy of the high temperature gas chamber, and the principle that the carbon particles burn more completely due to collision wear. In addition to increasing the air temperature, the gas retention time is also increased. The temperature difference of the gas chamber is beneficial to the conduction of heat, the improvement of the overall temperature, and the benefit of exhaust gas purification.

Fourth, with a variety of combinations of changes, you can freely change the design according to demand.

In summary, the metal honeycomb carrier catalyst conversion device for the diesel engine of the present invention can achieve its efficacy and purpose when used, so the novel is a new type of practicality, which is in line with the new patent. Apply for the requirements, and apply in accordance with the law. I hope that the trial committee will grant this new type as soon as possible to protect the creators' hard work. If there is any doubt in the trial committee, please do not hesitate to give instructions, the creators will try their best to cooperate and feel good.

Claims (10)

A metal honeycomb carrier catalyst conversion device for a diesel engine, comprising: an outer casing; an intake pipe disposed on the outer casing for introducing the exhaust gas; and a casing disposed away from the intake pipe The exhaust pipe on the side is for deriving the exhaust gas; at least one catalytic converter device disposed in the outer casing comprises a plurality of layered positioning casings respectively formed around the casing, and a plurality of positioning casings respectively disposed on the positioning casings The heat conducting sheet between the bodies is continuously bent to resist the adjacent two positioning shells, so as to form a plurality of gas passages for guiding the front and rear ends of the catalyst conversion device in the bending space of each of the heat conducting sheets; a metal catalyst layer defined on the surface of the heat conductive sheet; an air inlet chamber formed on one side of the catalyst conversion device is connected to the gas passage of the air inlet tube and a portion; and the catalyst channel is formed An outlet air chamber on one side of the device is a gas passage connecting the exhaust pipe and another portion; and at least one transition air chamber formed at at least one side of the catalyst conversion device is connected to the intake air chamber, the contact Media conversion device and the output Plenum, the exhaust gas flowing to the catalytic converter means again guided to the outlet of the air chamber via the catalytic conversion apparatus. The metal honeycomb carrier catalyst conversion device for a diesel engine according to claim 1, further comprising at least one isolation element disposed on the air inlet chamber and the side wall of the air outlet chamber for providing a barrier chamber Gas convection between. The metal honeycomb carrier catalyst conversion device for a diesel engine according to claim 1, wherein the air outlet chamber comprises a temperature equalizing air chamber adjacent to the air inlet chamber. The metal honeycomb carrier catalyst conversion device for a diesel engine according to claim 3, further comprising at least one heat transfer fin disposed in the air inlet chamber, the air outlet chamber, and the transition air chamber Or the wall between the two of the temperature equalizing chambers to accelerate the transfer of heat. The metal honeycomb carrier catalyst conversion device for a diesel engine according to claim 1, wherein when the catalyst conversion device is plural and arranged in series, each of the catalyst conversion devices has a plurality of corresponding linkages The gas passage connects the gas chamber. Metal honeycomb carrier catalyst conversion for diesel engines as described in claim 1 The device further includes at least one drainage baffle disposed in the transition plenum or the venting air chamber for changing the gas flow direction and lengthening the air flow path. The metal honeycomb carrier catalyst conversion device for a diesel engine according to claim 1, wherein the exhaust pipe is formed in the air outlet chamber to form an air outlet restricting portion for reducing the fluency of the gas discharge. . The metal honeycomb carrier catalyst conversion device for a diesel engine according to claim 1, wherein the outer casing has at least one heat insulation layer. The metal honeycomb carrier catalyst conversion device for a diesel engine according to claim 1, wherein the metal catalyst layer comprises platinum, palladium or rhodium, and the positioning housing and the thermal conductive sheet system are iron, Alloy material of chrome and aluminum, and the shell system is made of metal. The metal honeycomb carrier catalyst conversion device for a diesel engine according to claim 1, wherein a cross-sectional area of the intake pipe is smaller than a cross-sectional area of the intake air chamber, and an output end of the catalytic converter device The cross-sectional area is smaller than the cross-sectional area of each of the transitional plenums and the cross-sectional area of the venting plenum.