CN217897996U

CN217897996U - Three way catalyst converter packaging hardware

Info

Publication number: CN217897996U
Application number: CN202222173911.7U
Authority: CN
Inventors: 兰晓明; 李武; 覃仁豪
Original assignee: Liuzhou Lihe Exhaust Systems Control Co ltd
Current assignee: Liuzhou Lihe Exhaust Systems Control Co ltd
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2022-11-25
Anticipated expiration: 2032-08-18

Abstract

The utility model discloses a three-way catalyst packaging device, relating to the technical field of automobile three-way catalyst manufacturing; the device comprises a cylinder body with an air inlet end cover and an air outlet end cover, wherein the air inlet end cover is connected with an air inlet flange through an air inlet pipe, the air outlet end cover is connected with an air outlet flange, and the front part and the rear part in the cylinder body are respectively provided with a three-way catalyst and a particle trap; the air inlet pipe is provided with a front oxygen sensor assembly, the cylinder body is provided with a rear oxygen sensor assembly, an exhaust temperature sensor assembly and a first pressure sensor pipe on the cylinder wall between the three-way catalyst and the particle trap, and the air outlet end cover is provided with a second pressure sensor pipe; the end cover of giving vent to anger still is connected with the waste gas flange through the waste gas pipe, and the barrel is equipped with the installing support subassembly on the section of thick bamboo wall of nearly gas outlet end cover one side, and the barrel surface is equipped with thermal-insulated cover. The utility model discloses can solve current structure compact inadequately, do not have thermal-insulated measure, support stability can not be enough, can't satisfy the problem that six emission regulations in state required.

Description

Three way catalyst converter packaging hardware

Technical Field

The utility model belongs to the technical field of the car three way catalyst converter technique of making and specifically relates to a three way catalyst converter packaging hardware.

Background

The three-way catalyst is the most important external purifying device installed in the automobile exhaust system, when the high-temperature automobile exhaust passes through the purifying device, the purifying agent in the three-way catalyst can enhance the activity of CO, HC and NOx to promote the three gases to carry out certain oxidation-reduction chemical reaction, wherein CO is oxidized into colorless and nontoxic carbon dioxide gas at high temperature; HC compounds are oxidized at high temperature to water and carbon dioxide; NOx is reduced into nitrogen and oxygen, and three harmful gases are changed into harmless gases, so that the automobile exhaust can be purified. With the acceleration of the update of automobile products and the coming of the national six-emission standard, the requirements on the structure of the three-way catalyst packaging device are also improved. The three-way catalyst packaging device comprises a cylinder body provided with an air inlet end cover and an air outlet end cover, wherein the air inlet end cover is connected with an air inlet flange through an air inlet pipe, and the air outlet end cover is connected with an air outlet flange; the cylinder comprises a front-stage cylinder connected with the air inlet end cover and a rear-stage cylinder connected with the air outlet end cover, the front-stage cylinder is connected with the rear-stage cylinder through the connecting end cover, a three-way catalyst is arranged in the front-stage cylinder, and a particle trap is arranged in the rear-stage cylinder; when the three-way catalyst packaging device is used, the air inlet flange is connected with the exhaust manifold, the air outlet flange is connected with the exhaust pipe, the cylinder body is further provided with the mounting support, one end of the mounting support is connected with the air outlet flange, and the other end of the mounting support is connected with the gearbox shell. The three-way catalyst packaging device has the defects of not compact structure, layout of all components, no heat insulation measure, insufficient stability of the bracket and high resonance noise, so that the requirement of the national six-emission regulation cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a three way catalyst converter packaging hardware, it can solve current three way catalyst converter packaging hardware's structure compact enough, has the defect on each subassembly overall arrangement, does not have thermal-insulated measure to the stability ability of support is not enough, and resonance noise is great, leads to the unable problem that satisfies six emission regulations requirements in the state.

In order to solve the above problem, the utility model discloses a technical scheme is: the three-way catalyst packaging device comprises a cylinder body with an air inlet end cover and an air outlet end cover, wherein the air inlet end cover is connected with an air inlet flange through an air inlet pipe, the air outlet end cover is connected with an air outlet flange, a three-way catalyst is arranged at the front part in the cylinder body, and a particle trap is arranged at the rear part in the cylinder body; the air inlet pipe is provided with a front oxygen sensor assembly, the cylinder body is provided with a rear oxygen sensor assembly, an exhaust temperature sensor assembly and a first pressure sensor pipe on the cylinder wall between the three-way catalyst and the particle trap, and the air outlet end cover is provided with a second pressure sensor pipe; the exhaust end cover is further connected with an exhaust flange through an exhaust pipe, a mounting support assembly is arranged on the cylinder wall close to one side of the exhaust end cover, and a heat shield is arranged on the outer surface of the cylinder.

In the above technical solution, a more specific technical solution may also be: the mounting bracket assembly comprises two short brackets and a long bracket; the short support comprises two first mounting plates which are connected together through a first arc-shaped connecting part, wherein one first mounting plate is connected with a cylinder mounting block arranged on the cylinder wall of the cylinder; the long support includes the second mounting panel and connects through second arc portion the third mounting panel of second mounting panel one side, the second mounting panel both ends be equipped with another of short support the installation department that the first mounting panel is connected, the third mounting panel is connected with the gearbox casing.

Further, a first gasket is arranged between the inner wall of the front part of the cylinder body and the three-way catalyst.

Furthermore, a second liner is arranged between the inner wall of the rear part of the cylinder body and the particle catcher.

Furthermore, heat insulation cotton is arranged between the cylinder body and the heat insulation cover.

Further, the first liner and the second liner are both low-expansion liners.

Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has:

the utility model discloses arrange anterior and rear portion in the barrel respectively with three way catalyst and particle trap to oxygen sensor assembly and back oxygen sensor assembly detect the oxygen content of air current in three way catalyst converter before setting up, set up the temperature that exhaust temperature sensor assembly detected the air current when getting into the particle trap, set up the collection condition that first pressure sensor pipe and second pressure sensor pipe detected the particulate matter, the barrel is equipped with thermal-insulated cotton and separates the heat exchanger outward, and adopt the installing support subassembly to connect fixedly. The utility model optimizes the layout of the components of the three-way catalyst packaging device, has compact structure and improves the overall reliability of the system; and the heat radiation of the system to the periphery is reduced, the risk of failure caused by thermal fatigue is reduced, the stability of the bracket is strengthened, the resonance noise is reduced, and the risk of failure caused by system resonance is reduced. Through actual installation and use, packaging system thermal mechanical fatigue performance PEEQ is reduced to 1.98% by 3.45%, and the mode of system is improved to 198Hz by 154Hz, makes the utility model discloses satisfy six emission regulations requirements in state completely.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of the connection structure of the short bracket and the barrel mounting block;

fig. 4 is a schematic view showing a connection structure of a long stent and a short stent.

Detailed Description

The invention will be described in more detail with reference to the following embodiments:

the three-way catalyst packaging device shown in fig. 1 and 2 comprises a cylinder body 3 with an air inlet end cover 1 and an air outlet end cover 2, wherein the air inlet end cover 1 is connected with an air inlet flange 5 through an air inlet pipe 4, the air outlet end cover 2 is connected with an air outlet flange 6, a three-way catalyst 7 is arranged at the front part in the cylinder body 3, and a particle trap 8 is arranged at the rear part in the cylinder body 3; the air inlet pipe 4 is provided with a front oxygen sensor assembly 9, the cylinder 3 is provided with a rear oxygen sensor assembly 10, an exhaust temperature sensor assembly 11 and a first pressure sensor pipe 12 on the cylinder wall between the three-way catalyst 7 and the particle trap 8, and the air outlet end cover 2 is provided with a second pressure sensor pipe 13; the air outlet end cover 2 is further connected with an exhaust flange 15 through an exhaust pipe 14, a mounting support assembly is arranged on the cylinder wall of the cylinder 3 close to one side of the air outlet end cover 2, a heat insulation cover 16 is arranged on the outer surface of the cylinder 3, and heat insulation cotton is arranged between the cylinder 3 and the heat insulation cover 16.

The mounting bracket assembly is shown in fig. 3 and 4 and comprises two short brackets 17 and a long bracket 18; the short support 17 comprises two first mounting plates 17-2 which are connected together through a first arc-shaped connecting part 17-1, wherein one first mounting plate 17-2 is connected with a cylinder mounting block 19 arranged on the cylinder wall of the cylinder 2; the long bracket 18 includes a second mounting plate 18-1 and a third mounting plate 18-3 connected to one side of the second mounting plate 18-1 through a second arc portion 18-2, mounting portions connected to the other first mounting plate 17-2 of the short bracket 17 are provided at both ends of the second mounting plate 18-1, and the third mounting plate 18-3 is connected to the transmission case.

A first gasket 19 is arranged between the inner wall of the front part of the cylinder body 3 and the three-way catalyst 7, a second gasket 20 is arranged between the inner wall of the rear part of the cylinder body 3 and the particle catcher 8, and the first gasket 19 and the second gasket 20 are low-expansion gaskets; the low-expansion liner is adopted, the cost is lower, and the vermiculite in the low-expansion liner is heated and expanded to provide larger holding power for the carrier, so that the safety coefficient of the carrier is higher in the using process.

The during operation, the utility model discloses an inlet flange 5 is connected with exhaust manifold, be connected with the blast pipe through outlet flange 6, be connected with the EGR valve through waste gas flange 15, exhaust gas flow is through inlet flange 5, intake pipe 4 and inlet end cover 1 get into in the anterior three way catalyst 7 of barrel 3, carry out the particulate matter in the particle trap 8 at barrel 3 rear portion through the gas after the catalysis and particulate matter reentrant, the air current gets into the blast pipe through outlet end cover 2 and outlet flange 6 at last, waste gas in the air current passes through waste gas pipe 14 and the leading-in EGR valve of waste gas flange 15 in order to improve fuel economy.

The utility model discloses arrange anterior and rear portion in barrel 3 respectively with three way catalyst 7 and particle trap 8, and set up the oxygen content of preceding oxygen sensor assembly 9 and back oxygen sensor assembly 10 detection air current in three way catalyst converter, set up the temperature of exhaust temperature sensor assembly 11 detection air current when getting into particle trap 8, set up the collection condition that first pressure sensor pipe 12 and second pressure sensor pipe 13 detected the particulate matter, barrel 3 is equipped with thermal-insulated cotton and thermal-insulated cover 16 outward, and adopt the installation bracket subassembly to connect fixedly. The utility model optimizes the layout of the components of the three-way catalyst packaging device, has compact structure and improves the overall reliability of the system; and the heat radiation of the system to the periphery is reduced, the failure risk caused by thermal fatigue is reduced, the stability of the bracket is strengthened, the resonance noise is reduced, and the failure risk caused by system resonance is reduced. Through actual installation and use, packaging system thermal mechanical fatigue performance PEEQ is reduced to 1.98% by 3.45%, and the mode of system is improved to 198Hz by 154Hz, makes the utility model discloses satisfy six emission regulations requirements in state completely.

Claims

1. A three way catalyst packaging hardware characterized in that: the three-way catalyst particle filter comprises a cylinder body with an air inlet end cover and an air outlet end cover, wherein the air inlet end cover is connected with an air inlet flange through an air inlet pipe, the air outlet end cover is connected with an air outlet flange, a three-way catalyst is arranged at the front part in the cylinder body, and a particle trap is arranged at the rear part in the cylinder body; the air inlet pipe is provided with a front oxygen sensor assembly, the cylinder body is provided with a rear oxygen sensor assembly, an exhaust temperature sensor assembly and a first pressure sensor pipe on the cylinder wall between the three-way catalyst and the particle trap, and the air outlet end cover is provided with a second pressure sensor pipe; the exhaust end cover is further connected with an exhaust flange through an exhaust pipe, the cylinder body is provided with a mounting support assembly on the cylinder wall close to one side of the exhaust end cover, and the outer surface of the cylinder body is provided with a heat insulation cover.

2. The three-way catalyst packaging device according to claim 1, characterized in that: the mounting bracket assembly comprises two short brackets and a long bracket; the short support comprises two first mounting plates which are connected together through a first arc-shaped connecting part, wherein one first mounting plate is connected with a cylinder mounting block arranged on the cylinder wall of the cylinder; the long support includes the second mounting panel and connects through second arc portion the third mounting panel of second mounting panel one side, second mounting panel both ends be equipped with another of short support the installation department that the first mounting panel is connected, the third mounting panel is connected with the gearbox casing.

3. The three-way catalyst encapsulation device according to claim 1 or 2, characterized in that: a first gasket is arranged between the inner wall of the front part of the cylinder body and the three-way catalyst.

4. The three-way catalyst encapsulation device according to claim 3, wherein: and a second liner is arranged between the inner wall of the rear part of the cylinder body and the particle catcher.

5. The three-way catalyst encapsulation device according to claim 4, wherein: and heat insulation cotton is arranged between the cylinder body and the heat insulation cover.

6. The three-way catalyst encapsulation device according to claim 5, wherein: the first and second liners are both low expansion liners.