CN202451248U - Three-way catalyst - Google Patents
Three-way catalyst Download PDFInfo
- Publication number
- CN202451248U CN202451248U CN2012200383077U CN201220038307U CN202451248U CN 202451248 U CN202451248 U CN 202451248U CN 2012200383077 U CN2012200383077 U CN 2012200383077U CN 201220038307 U CN201220038307 U CN 201220038307U CN 202451248 U CN202451248 U CN 202451248U
- Authority
- CN
- China
- Prior art keywords
- tube body
- packaging tube
- cylindrical shell
- wall
- end cone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Exhaust Silencers (AREA)
Abstract
The utility model discloses a three-way catalyst which comprises a packaging tube body. An upper end cone is arranged on the upper portion of the packaging tube body, and a lower end cone is arranged on the lower portion of the packaging tube body. A plurality of installation supports of heat insulation covers are further arranged on the outer wall of the packaging tube body. The packaging tube body is identical in integral thickness, the wall of the packaging tube body at the position of an upper portion end opening and a lower portion end opening protrudes outwards. The upper end cone is horn-shaped, the edge of a horn opening is turned outwards to form a ring of cylindrical flanging, and the cylindrical flanging is fixedly connected with the inner wall of the packaging tube body at the position of the upper portion end opening. The lower end cone has the same structure with the upper end cone, and the cylindrical flanging of the lower end cone is fixedly connected with the inner wall of the packaging tube body at the position of the lower portion end opening. The three-way catalyst increases outer wall utilization area of the packaging tube body and provides more choices for welding positions of the installation supports of the heat insulation covers. The cylindrical flanging of the upper end cone and the lower end cone can isolate heat from the external and can also exhaust gas and insulate heat, thereby facilitating burning starting of the catalyst and heat insulation of the external.
Description
Technical field
The utility model relates to automobile engine to exhaust manifold annex, is specifically related to a kind of ternary catalyzing unit.
Background technique
The position of the ternary catalyzing unit of motor car engine is near gas exhaust manifold and pressurized machine; Because the exhaust temperature that motor is discharged is high; Need carry out heat insulation with thermal shield; The mounting bracket of thermal shield generally is welded on the encapsulation cylindrical shell of ternary catalyzing unit, and its welding position often receives the structural limitations of ternary catalyzing unit.Existing ternary catalyzing unit; Upper end awl 9 covers the upper end-hole of encapsulation cylindrical shell 11, and lower end awl 10 covers the lower end mouth of encapsulation cylindrical shell 11, is welding then; And weld seam also takies the surface area (see figure 4) of fraction encapsulation cylindrical shell; Since a part of (see figure 3) of surface-coated lid of encapsulation cylindrical shell 11, thus limited the welding position of the mounting bracket 4 of thermal shield, so need improve to the structure of ternary catalyzing unit.
Summary of the invention
The purpose of the utility model provides a kind of ternary catalyzing unit, and it is simple in structure, more soldering point can be provided for the mounting bracket of thermal shield, and can improve heat insulation and thermal insulation property.
The technological scheme of the utility model is following:
A kind of ternary catalyzing unit comprises the encapsulation cylindrical shell, and the top of encapsulation cylindrical shell is provided with the upper end awl, and encapsulation cylindrical shell bottom is provided with the lower end awl, on the outer wall of encapsulation cylindrical shell, also is provided with the mounting bracket of a plurality of thermal shields, it is characterized in that:
The whole wall thickness of said encapsulation cylindrical shell is identical, and the wall of its port, upper and lower is to outer lug;
Said upper end awl is horn-like, and bell-mouthed edge is outwards dug, and forms the columniform flange of a circle, and this columniform flange is fixedly connected with the inwall at encapsulation cylindrical shell upper port place;
Said lower end awl is identical with the structure of upper end awl, and its columniform flange is fixedly connected with the inwall at encapsulation cylindrical shell lower port place.
The utlity model has following advantage: because the columniform flange of upper end awl and lower end awl welds with the inwall that encapsulates the barrel port place respectively; Utilize area so increased the encapsulation cylinder body outer wall, for the welding position of the mounting bracket of thermal shield provides more selected element; The columniform flange of upper end awl and lower end awl can be heat insulation to external world, can also exhaust be incubated, and helps the ignition of catalyzer and externally heat insulation.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the sectional drawing of the A-A of Fig. 1;
Fig. 3 is the prior art constructions schematic representation;
Fig. 4 is the sectional drawing of the B-B of Fig. 3.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further to describe.
To a kind of ternary catalyzing unit shown in Figure 2, comprise encapsulation cylindrical shell 3 referring to Fig. 1, the top of encapsulation cylindrical shell 3 is provided with upper end awl 1, and encapsulation cylindrical shell bottom is provided with lower end awl 2, on the outer wall of encapsulation cylindrical shell 3, also is provided with the mounting bracket 4 of four thermal shields,
The whole wall thickness of said encapsulation cylindrical shell 3 is identical, and the wall of its port, upper and lower lets air-flow under the prerequisite that does not blow to liner to outer lug, has increased the diameter of suction port, can reduce back pressure and slow down gas flow rate;
Said upper end awl 1 is horn-like, and bell-mouthed edge is outwards dug, and forms the columniform flange of a circle, this columniform flange and the inwall welding that encapsulates cylindrical shell upper port place;
Said lower end awl 2 is identical with the structure of upper end awl 1, and its columniform flange welds with the inwall at encapsulation cylindrical shell lower port place.
Encapsulation cylindrical shell 3 has just been reserved more outer surfaces (comparison diagram 2 and Fig. 4) like this; Be the mounting bracket position that provides more choices; Can also be arranged in the position of boring and not influence indexs such as whole ternary catalyzing unit performance of products and reliability, satisfy the arrangement requirement of thermal shield support near upper end awl and lower end.
Claims (1)
1. ternary catalyzing unit; Comprise encapsulation cylindrical shell (3), the top of encapsulation cylindrical shell (3) is provided with upper end awl (1), and encapsulation cylindrical shell bottom is provided with lower end awl (2); On the outer wall of encapsulation cylindrical shell (3), also be provided with the mounting bracket (4) of a plurality of thermal shields, it is characterized in that:
The whole wall thickness of said encapsulation cylindrical shell (3) is identical, and the wall of its port, upper and lower is to outer lug;
Said upper end awl (1) is horn-like, and bell-mouthed edge is outwards dug, and forms the columniform flange of a circle, and this columniform flange is fixedly connected with the inwall at encapsulation cylindrical shell upper port place;
Said lower end awl (2) is identical with the structure of upper end awl (1), and its columniform flange is fixedly connected with the inwall at encapsulation cylindrical shell lower port place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200383077U CN202451248U (en) | 2012-02-07 | 2012-02-07 | Three-way catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200383077U CN202451248U (en) | 2012-02-07 | 2012-02-07 | Three-way catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202451248U true CN202451248U (en) | 2012-09-26 |
Family
ID=46867117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200383077U Expired - Fee Related CN202451248U (en) | 2012-02-07 | 2012-02-07 | Three-way catalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202451248U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726916A (en) * | 2012-10-25 | 2014-04-16 | 重庆长安汽车股份有限公司 | Three-way catalyst reinforced support assembly |
-
2012
- 2012-02-07 CN CN2012200383077U patent/CN202451248U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726916A (en) * | 2012-10-25 | 2014-04-16 | 重庆长安汽车股份有限公司 | Three-way catalyst reinforced support assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20210207 |