CN201106475Y - Exhaust manifold assembly of small discharge capacity gasoline engine - Google Patents
Exhaust manifold assembly of small discharge capacity gasoline engine Download PDFInfo
- Publication number
- CN201106475Y CN201106475Y CNU2007201883483U CN200720188348U CN201106475Y CN 201106475 Y CN201106475 Y CN 201106475Y CN U2007201883483 U CNU2007201883483 U CN U2007201883483U CN 200720188348 U CN200720188348 U CN 200720188348U CN 201106475 Y CN201106475 Y CN 201106475Y
- Authority
- CN
- China
- Prior art keywords
- exhaust manifold
- air flue
- manifold air
- way catalyst
- gasoline engine
- 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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Abstract
The utility model relates to an exhaust manifold assembly of a small displacement gasoline engine, which comprises two to three exhaust manifold air channels; the upper ends of the exhaust manifold air channels are welded with an inlet flange, and the lower ends are connected with a three-way catalyst assembly; the lower end of a three-way catalyst is connected with an outlet flange, wherein, the lower ends of the exhaust manifold air channels unifies inby into one air channel. Each exhaust manifold air channel is welded by adopting an upper semi-casing and a lower semi-casing; the lower semi-casing is one of an integer; the die parting surfaces of the exhaust manifold air channels are on a same curved surface. The three-way catalyst assembly is welded by a three-way catalyst inlet end cover, a three-way catalyst body and a three way catalyst outlet end cover, and is made of stainless steel materials; the welding position of the exhaust manifold air channels deviates the center of the three-way catalyst end cover which adopts an angle-closure structure. The exhaust manifold assembly has the advantages of compact structure and high emission standard, and solves the problem that exhaust manifolds and the catalysts can be arranged sufficingly in a limit space.
Description
Technical field
The utility model belongs to technical field of engines, is specifically related to a kind of enmgine exhaust structure.
Background technique
Along with people are more and more stricter to automobile emissions standards to the pay attention to day by day and the country of environmental protection, this just requires three-way catalytic converter ignition fast, solves during the cold starting because temperature is crossed the low problem that can't satisfy emission standard.Simultaneously, less for small displacement engine lift-launch vehicle, the ground Clearance requires higher relatively, and in order to satisfy air flue exhaust uniformity, requires gas exhaust manifold that certain-length is arranged.Therefore, to arrange that in less space sufficiently long gas exhaust manifold and catalyst converter are the difficult points that designs at present.
Summary of the invention
The purpose of this utility model provides the displacement gasoline engine exhaust manifold assembly of a kind of emission standard height, compact structure,, solve the problem of arranging sufficiently long gas exhaust manifold and catalyst converter in the confined space.
A kind of displacement gasoline engine exhaust manifold assembly, it comprises 2-3 root gas exhaust manifold air flue, the upper end of gas exhaust manifold air flue and the welding of suction flange dish, the lower end connects ternary catalytic converter assembly, and the ternary catalyzing unit lower end connects the outlet(discharge) flange dish.Wherein said gas exhaust manifold air flue is a stainless steel, and the lower end of gas exhaust manifold air flue is combined into an air flue to the centre.
Further, the two halves housing was welded about each gas exhaust manifold air flue all adopted, and housing lower half is one that is integrated, and the mold joint of each gas exhaust manifold air flue is on same curved surface.
Described ternary catalytic converter assembly is welded by ternary catalyzing unit inlet end cap, ternary catalyzing unit body and ternary catalyzing unit outlet end cap, adopts stainless steel material, and ternary catalyzing unit inlet end cap center is departed from the welding position of gas exhaust manifold air flue.The ternary catalyzing unit outlet end cap adopts corner-shape structure.
By said structure as seen:
1, in order to solve emission problem, gas exhaust manifold has adopted stainless steel material (being the cast iron gas exhaust manifold originally), simultaneously the gas exhaust manifold air flue is combined into an air passage structure in the lower end, each manifold all adopts up and down, and the welding of two halves housing forms airtight air flue, each air flue mold joint is on same curved surface, do not reach the problem of emission request when so promptly can solve cold starting owing to delivery temperature is low, guarantee to reach the requirement of discharging, have good manufacturability again.
2, in order to be implemented in limited space longer air flue gas exhaust manifold is reasonably arranged, with ternary catalyzing unit inlet end cap design wryneck structure, even the link position of gas exhaust manifold air flue and vapour departs from the angle in its center, thereby has effectively increased gas exhaust manifold length.
3. for need satisfy car load ground Clearance needs, the ternary catalyzing unit outlet end cap is adopted angular structure, gas directly prolongs the outflow of dihedral end cap after carrier is got rid of, enter the silencing apparatus suction tude.The structure that this structure positive conical head than before is connected with bend pipe is again compared, and can reduce the size of exhaust manifold assembly, with the requirement (H2＞H1), referring to Fig. 3, reduce exhaust loss simultaneously that satisfies the car load ground Clearance.
Description of drawings
Fig. 1 is the structural representation of displacement gasoline engine exhaust manifold assembly;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the ground Clearance comparison diagram of the ternary catalyzing unit outlet end cap before and after improving, and A is for before improving, and B is for after improving.
Embodiment
As shown in Figure 1, this exhaust manifold assembly designs at three cylinder engine, adopt stainless steel, one cylinder, two cylinder and three cylinders are totally three gas exhaust manifold air flues 1,2 and 3 upper end and 4 welding of suction flange dish, the lower end is combined into an air flue 5 to the centre, with 6 welding of ternary catalyzing unit inlet end cap, and ternary catalyzing unit inlet end cap 6 center several angles are departed from the welding position.The two halves housing was welded about each gas exhaust manifold air flue all adopted, and housing lower half is one that is integrated, and promptly air flue 5, and the mold joint of each gas exhaust manifold air flue is on same curved surface.Ternary catalyzing unit outlet end cap 8 adopts corner-shape structure, connects outlet(discharge) flange dish 9.The ternary catalyzing unit body is the stainless steel drum-shaped structure, welds with ternary catalyzing unit inlet end cap 6 and ternary catalyzing unit outlet end cap 8 respectively up and down.
Claims (5)
1, a kind of displacement gasoline engine exhaust manifold assembly, it comprises 2-3 root gas exhaust manifold air flue, the upper end of gas exhaust manifold air flue and the welding of suction flange dish, the lower end connects ternary catalytic converter assembly, and the ternary catalyzing unit lower end connects the outlet(discharge) flange dish; It is characterized in that: described gas exhaust manifold air flue is a stainless steel, and their lower ends are combined into an air flue to the centre.
2, displacement gasoline engine exhaust manifold assembly according to claim 1 is characterized in that: the two halves housing was welded about each gas exhaust manifold air flue all adopted, and housing lower half is one that is integrated.
3, displacement gasoline engine exhaust manifold assembly according to claim 1 and 2, it is characterized in that: the mold joint of each gas exhaust manifold air flue is on same curved surface.
4, displacement gasoline engine exhaust manifold assembly according to claim 3, it is characterized in that: described ternary catalytic converter assembly is welded by ternary catalyzing unit inlet end cap, ternary catalyzing unit body and ternary catalyzing unit outlet end cap, adopt stainless steel material, ternary catalyzing unit inlet end cap center is departed from the welding position of gas exhaust manifold air flue.
5, displacement gasoline engine exhaust manifold assembly according to claim 3 is characterized in that: the ternary catalyzing unit outlet end cap adopts corner-shape structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201883483U CN201106475Y (en) | 2007-11-27 | 2007-11-27 | Exhaust manifold assembly of small discharge capacity gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201883483U CN201106475Y (en) | 2007-11-27 | 2007-11-27 | Exhaust manifold assembly of small discharge capacity gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201106475Y true CN201106475Y (en) | 2008-08-27 |
Family
ID=39958274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201883483U Expired - Fee Related CN201106475Y (en) | 2007-11-27 | 2007-11-27 | Exhaust manifold assembly of small discharge capacity gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201106475Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195551A (en) * | 2013-04-16 | 2013-07-10 | 力帆实业(集团)股份有限公司 | Engine exhaust manifold assembly |
-
2007
- 2007-11-27 CN CNU2007201883483U patent/CN201106475Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195551A (en) * | 2013-04-16 | 2013-07-10 | 力帆实业(集团)股份有限公司 | Engine exhaust manifold assembly |
| CN103195551B (en) * | 2013-04-16 | 2015-12-02 | 力帆实业(集团)股份有限公司 | Engine exhaust manifold 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 |
Granted publication date: 20080827 Termination date: 20151127 |