CN215566191U - A catalyst and engine with integrated EGR - Google Patents

Abstract

The utility model provides an EGR integrated catalytic converter which is arranged on an exhaust port of an engine and comprises a catalytic converter and an air intake pipe, wherein the catalytic converter comprises an air intake pipeline and a catalytic converter, the air intake pipeline is connected between the exhaust port of the engine and the catalytic converter, the air intake pipe is connected on the air intake pipeline, and a particulate matter processing piece and a gas processing piece are sequentially arranged at one end, close to the air intake pipeline, of the air intake pipe. Get the trachea and include: the utility model discloses a particulate matter treatment spare, gas treatment spare and encapsulation casing, the one end of particulate matter treatment spare is installed on the intake manifold, and the other end of particulate matter treatment spare is connected with the one end of gas treatment spare, and the other end of gas treatment spare is connected with the air inlet of engine, and the encapsulation casing fastening is in the junction of the other end of particulate matter treatment spare and the one end of gas treatment spare. The utility model also provides that the catalyst integrating the EGR is arranged on an engine.

Description

Integrated EGR's catalyst converter and engine

Technical Field

The utility model relates to the technical field of exhaust gas treatment, in particular to an EGR (exhaust gas recirculation) integrated catalyst and an engine.

Background

With the coming of relevant policies such as energy conservation and new energy automobile technical routes, the requirement on the oil consumption of the internal combustion engine is more and more strict, and the EGR (exhaust gas recirculation) system is gradually applied as an oil saving technology of the internal combustion engine.

The trend of compactness is arranged in combination cabin, and the EGR gets arranging the degree of difficulty of trachea very big, at present mainly gets gas at the catalyst converter rear end, and this kind of form of getting gas is mainly to consider that the catalyst converter rear end is got gas and is compared the catalyst converter front end and get gas cleaner, and the filter screen is installed at EGR cooler import department simultaneously and filters great particulate matter impurity, prevents that the foreign matter from getting into and destroying the engine.

The method has the advantages that the method is simple in process, low in cost and convenient to operate, and meanwhile brings corresponding problems, firstly, the length of an EGR (exhaust gas recirculation) air inlet pipe is too long, so that the local mode is low, the problem of resonance endurance failure is easily caused, secondly, the air intake pressure at the rear end of a catalyst is smaller than the air intake pressure at the front end of the catalyst, and the air intake difficulty is increased.

The foregoing description is provided for general background information and is not admitted to be prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an EGR integrated catalyst and an engine, which adopt a form of gas taking at the front end of the catalyst, reduce the arrangement difficulty and promote the local mode of a system, and meanwhile, the gas taking pressure at the front end of the catalyst is higher than the gas taking pressure at the back of the catalyst, thereby facilitating the gas taking of the EGR and promoting the performance.

The utility model provides an EGR integrated catalytic converter which is arranged on an exhaust port of an engine and comprises a catalytic converter and an air intake pipe, wherein the catalytic converter comprises an air intake pipeline and a catalytic converter, the air intake pipeline is connected between the exhaust port of the engine and the catalytic converter, the air intake pipe is connected on the air intake pipeline, and a particulate matter processing piece and a gas processing piece are sequentially arranged at one end, close to the air intake pipeline, of the air intake pipe.

Further, the intake pipe includes: the utility model discloses a particulate matter treatment device, including particulate matter treatment piece, gas treatment piece and encapsulation casing, the one end of particulate matter treatment piece is installed intake pipe way, the other end of particulate matter treatment piece with the one end of gas treatment piece is connected, the other end of gas treatment piece with the air inlet of engine is connected, the encapsulation casing fastening is in the other end of particulate matter treatment piece with the junction of the one end of gas treatment piece.

Further, a mesh structure is installed in one end of the particulate matter processing piece, which is close to the gas processing piece, and one end of the gas processing piece, which is close to the particulate matter processing piece, and the packaging shell is of an annular structure and is fastened at the joint of the particulate matter processing piece and the gas processing piece.

Further, the net structure of the particulate matter treatment piece is an iron-chromium-aluminum metal fiber felt, and the net structure of the gas treatment piece is a metal carrier with a catalyst coating.

Further, the end of the intake pipe connected to the exhaust port has an end cone.

Further, the catalyst further includes: and the catalytic converter and the gas outlet pipeline are sequentially connected with the gas inlet pipeline, and a shell left support and a shell right support are symmetrically arranged on the catalytic converter.

Further, the shell left support and the shell right support are connected with the shell left support and the shell right support through bolts.

Further, the catalytic converter includes: casing and preceding stage end awl of giving vent to anger, the pipeline of giving vent to anger includes: the rear end of the end cone is connected with the shell, the front-stage air outlet end cone and the air outlet pipe in sequence.

Further, the catalyst has a catalyst heat shield made of high silica glass fiber on the outside.

The utility model also provides an engine comprising the EGR integrated catalyst.

According to the catalyst and the engine integrated with the EGR, the gas taking form at the front end of the catalyst is adopted, the arrangement difficulty is reduced, the local mode of the system is improved, meanwhile, the gas taking pressure in front of the catalyst is higher than that in back of the catalyst, the EGR gas taking is facilitated, and the performance is improved; the gas pipe is integrated with a metal carrier with a catalyst coating, THC and CO of the catalytic oxidation gas and clean gas; get the integrated iron chromium aluminium metal fiber felt of trachea, particulate matter in the filterable gas can adjust the size of filtrating thing particle size according to thickness, compares the metal filters who uses at present, and the filter effect is better.

Drawings

Fig. 1 is a first perspective view of an EGR integrated catalyst of the present invention.

Fig. 2 is a second perspective view of the EGR integrated catalyst of the present invention.

Fig. 3 is a schematic view of a particulate treatment member of the exhaust pipe of fig. 1.

FIG. 4 is a schematic view of a gas handling member of the gas extraction tube of FIG. 1.

The device comprises a catalyst A, a gas taking pipe B, an end cone 1, a packaging shell 3, a gas processing part 4, a particulate matter processing part 5, a flange 7, a front oxygen sensor base 8, a shell left support 9, a shell right support 10, a shell 11, a support connecting bolt 13, a right cylinder support 14, a left cylinder support 15, a front stage gas outlet end cone 16, a rear oxygen sensor base 17, a catalyst heat insulation cover 18 and a gas outlet pipe 19.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

An EGR-integrated catalyst as shown in fig. 1 and 2 includes a catalyst a and an intake pipe B mounted on the catalyst a.

The catalyst a includes an intake line a1, a catalytic converter a2, and an exhaust line A3 connected in series. The air inlet line A1 is mounted on the exhaust of the engine, the catalytic converter A2 is capable of treating exhaust gases from the engine, and the air outlet line A3 is capable of exhausting the gases.

The intake line a1 includes: an end cone 1 and a front oxygen sensor base 8. The end cone 1 is welded to the catalytic converter a2, and the front oxygen sensor mount 8 is provided on the end cone 1. The end cone 1 is made of SUS309, is cast integrally, has high temperature resistance, can be made into a special-shaped piece, and is flexible in arrangement.

The catalytic converter a2 includes: the device comprises a shell left support 9, a shell right support 10, a shell 11, a support connecting bolt 13, a right cylinder support 14, a left cylinder support 15, a front stage exhaust end cone 16, a rear oxygen sensor base 17 and a catalyst heat shield 18. The outlet line a3 includes: and an outlet pipe 19.

Specifically, the material of the housing 11 is SUS441, the interior of the housing 11 includes a ceramic carrier, and the exterior of the ceramic carrier is wrapped with polycrystalline fibers. The material of the case left bracket 9 and the case right bracket 10 is SUS 409. The right cylinder holder 14 and the left cylinder holder 15 are made of SUS 409. The material of the front-stage outlet end cone 16 is SUS441, an opening is arranged above the front-stage outlet end cone 16, a rear oxygen sensor base 17 is welded on the opening position of the front-stage outlet end cone 16, and the material of the rear oxygen sensor base 17 is 10Cr 17. The outside of casing 11 has the catalyst and separates heat exchanger 18, and catalyst separates heat exchanger 18 and can fix parcel casing 11 through resistance welding lockrand, and then to casing 11 thermal-insulated processing, and the inboard material of catalyst separates heat exchanger 18 is high silica glass fiber, and the material in the outside is SUS 430. The material of outlet duct is SUS 409.

Understandably, the rear end of the end cone 1 is welded with a shell 11, the rear end of the shell 11 is welded with a preceding stage air outlet end cone 16, and the rear end of the preceding stage air outlet end cone 16 is welded with an air outlet pipe 19. Wherein, the symmetrical welding has right barrel support 14 and left barrel support 15 on the casing 11, has the through-hole on casing left socle 9, the casing right branch frame 10, and casing left socle 9, casing right branch frame 10 pass through support connecting bolt 13 and right barrel support 14, left barrel support 15 bolted connection and then indirectly fix on casing 11, weld back oxygen sensor base 17 on preceding stage's outlet end awl 16, and back level catalysis unit or silencer can be connected to the rear of outlet duct 19.

Understandably, the difficulty of pipeline arrangement is reduced and the mode of the catalytic converter A2 is improved in the form of taking gas at the front end of the catalytic converter A2, meanwhile, the gas taking pressure at the front end of the catalytic converter A2 is higher than that at the rear end of the catalytic converter A2, and the gas taking pipe B is positioned at the front end of the catalytic converter A2, so that the gas taking is facilitated, and the gas taking efficiency of the gas taking pipe B is improved; because the gas taking pipe B takes gas at the front end of the catalytic converter A2, the pressure to be borne by the whole catalytic converter A2 is reduced, so that the strength and rigidity of the catalytic converter A2 do not need to be maintained at high strength, the use of materials is reduced, the strength of the materials is reduced, and the economy of the catalytic converter A2 is improved; the catalyst heat insulation cover 18 is made of high silica glass fiber on one side close to the shell 11, so that heat can be greatly blocked, and the heat insulation performance of the shell 11 is improved; casing left socle 9 and casing right branch frame 10 are installed to the symmetry on the casing 11, can be with the firm fixed of fixing of casing 11, have prevented that casing 11 from because of shaking the drop that leads to.

As shown in fig. 1, 3 and 4, the intake pipe B is connected to an intake line a1, and includes: the particle processing piece 5, the gas processing piece 4, the packaging shell 3 and the flange 7 are sequentially arranged at one end of the gas taking pipe B close to the gas inlet pipeline A1.

Specifically, the one end of particulate matter processing piece 5 is installed on air inlet pipeline A1, and the other end of particulate matter processing piece 5 is connected with the one end of gas processing piece 4, and the other end of gas processing piece 4 has flange 7, and flange 7 is connected with the air inlet of engine, and encapsulation casing 3 is the ring shape, and the fastening is in the junction of particulate matter processing piece 5 and gas processing piece 4. Understandably, the first treatment of the particles in the waste gas and the second treatment of the harmful gases in the waste gas are beneficial to improving the efficiency of the waste gas treatment.

Specifically, a mesh structure is installed in both the end of the particulate matter treating member 5 close to the gas treating member 4 and the end of the gas treating member 4 close to the particulate matter treating member 5. Understandably, the arrangement of the net structure can greatly improve the contact degree of the exhaust gas discharged from the engine with the particulate matter treatment member 5 and the gas treatment member 4, and promote the efficiency of exhaust gas treatment.

In this embodiment, the mesh structure of the particulate matter-treating member 5 is an iron-chromium-aluminum metal fiber felt, and the mesh structure of the gas-treating member 4 is a metal carrier with a catalyst coating. Understandably, the material of the iron-chromium-aluminum metal fiber felt structure has the effect of efficiently adsorbing particles in exhaust gas, the particle size of a filter can be adjusted according to the thickness, compared with the metal filter screen used at present, the filter effect is better, the metal filter screen has high economic practicability in the actual use process, the metal carrier with the catalyst coating also has the effect of efficiently catalyzing harmful gases in the exhaust gas, and THC and CO are catalytically oxidized to be preferred catalysts.

The utility model also provides an engine comprising the EGR integrated catalyst.

In conclusion, the catalyst and the engine integrated with the EGR provided by the utility model adopt the form of gas taking at the front end of the catalyst A, the arrangement difficulty is reduced, the local mode of the system is improved, meanwhile, the gas taking pressure at the front end of the catalyst A is higher than that at the rear end of the catalyst A, the EGR gas taking is facilitated, and the performance is improved; taking a gas pipe B, integrating a metal carrier with a catalyst coating, catalyzing and oxidizing THC and CO of gas, and cleaning the gas; get the integrated iron chromium aluminium metal fiber felt of trachea B, particulate matter in the filterable gas can adjust the size of filtrating thing particle size according to thickness, compares the metal filters who uses at present, and the filter effect is better.

In this document, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms can be understood in a specific case to those of ordinary skill in the art.

In this document, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the purpose of clarity and convenience of description of the technical solutions, and thus, should not be construed as limiting the present invention.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. A catalytic converter integrating EGR, installed on the exhaust port of the engine, is characterized in that, comprising a catalytic converter and an air intake pipe, the catalytic converter comprises an intake line and a catalytic converter, and the intake line is connected to the engine. Between the exhaust port and the catalytic converter, the air intake pipe is connected to the intake pipeline, and one end of the air intake pipe close to the intake pipeline is sequentially equipped with a particulate matter treatment part and a gas treatment part. 2 . The EGR-integrated catalyst according to claim 1 , wherein the gas intake pipe comprises: the particulate matter treatment part, the gas treatment part, and an encapsulation shell, and one end of the particulate matter treatment part is installed on the On the air intake pipeline, the other end of the particulate matter treatment part is connected to one end of the gas treatment part, the other end of the gas treatment part is connected to the air inlet of the engine, and the encapsulation shell is fastened on the air inlet. the connection between the other end of the particle treatment part and one end of the gas treatment part. 3 . The EGR-integrated catalyst according to claim 2 , wherein an end of the particulate matter treatment member close to the gas treatment member and an end of the gas treatment member close to the particulate matter treatment member are installed in both. 4 . There is a mesh structure, and the encapsulation shell is an annular structure, which is fastened at the connection between the particulate matter treatment part and the gas treatment part. 4 . The EGR-integrated catalyst according to claim 3 , wherein the mesh structure of the particulate matter treatment member is iron-chromium-aluminum metal fiber felt, and the mesh structure of the gas treatment member is a catalyst coating. 5 . metal carrier. 5 . The EGR-integrated catalyst according to claim 1 , wherein the end of the intake pipe connected to the exhaust port has an end cone. 6 . 6 . The EGR-integrated catalytic converter according to claim 5 , wherein the catalytic converter further comprises: a catalytic converter and an exhaust pipeline connected in sequence with the intake pipeline, and the catalytic converter is on the catalytic converter. 7 . The left bracket of the shell and the right bracket of the shell are symmetrically installed. 7 . The EGR-integrated catalyst according to claim 6 , wherein the left housing bracket and the right housing bracket are bolted to the left housing bracket and the right housing bracket. 8 . 8 . The EGR-integrated catalytic converter according to claim 7 , wherein the catalytic converter comprises: a casing and a front-stage gas outlet end cone, the gas outlet pipeline comprises: an outlet pipe, and the end cone The rear end is sequentially connected with the casing, the front-stage gas outlet cone and the gas outlet pipe. 9 . The EGR-integrated catalytic converter according to claim 1 , wherein the outside of the catalytic converter has a catalytic converter heat shield made of high-silica glass fiber. 10 . 10. An engine comprising the EGR-integrated catalyst as claimed in any one of claims 1 to 9.

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