CN103032145B - Vehicle exhaust system - Google Patents
Vehicle exhaust system Download PDFInfo
- Publication number
- CN103032145B CN103032145B CN201110298608.3A CN201110298608A CN103032145B CN 103032145 B CN103032145 B CN 103032145B CN 201110298608 A CN201110298608 A CN 201110298608A CN 103032145 B CN103032145 B CN 103032145B
- Authority
- CN
- China
- Prior art keywords
- outlet pipe
- hole
- silencer
- rear end
- internal baffle
- 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.)
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- 239000000463 material Substances 0.000 claims abstract description 39
- 230000003584 silencer Effects 0.000 claims abstract description 30
- 239000000725 suspension Substances 0.000 claims description 14
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000003628 erosive effect Effects 0.000 abstract 2
- 238000005260 corrosion Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Abstract
The invention relates to a vehicle exhaust system which comprises a bracket, exhaust pipes, a flange, a thermal shroud, a lifting hook, a middle silencer, a rear silencer and a tail pipe, wherein the bracket, the exhaust pipes, the flange, the thermal shroud, the lifting hook, the middle silencer, the rear silencer and the tail pipe are all made of B409M materials. The vehicle exhaust system manufactured by the B409M material is stable in performance, high in erosion resistance and low in price, and solves the problems that the materials used in the prior art are bad in erosion resistance or high in price.
Description
Technical field
The present invention relates to a kind of automobile exhaust system.
Background technique
Automobile exhaust system is positioned at vehicle bottom, connecting engine outlet side and air, and Main Function is waste gas, purifying exhaust air, the reduction noise that discharge motor produces.Its structure is primarily of compositions such as ternary catalyzing unit, pipe, rubber hanger, bafflers.
Automobile exhaust system work under bad environment, comprises the excitation vibrations, high temperature, corrosion etc. on motor and road surface.Especially for vent systems cold junction, corrosion becomes maximum complaint problem after sale.In addition some gasoline quality is poor, and sulphur content is high, exacerbates exhaust system corrosion further.Therefore, in order to tackle the severe working environment of vent systems, must usability stablize, the stainless steel raw material of excellent corrosion resistance.
It is the materials such as 409,439,436 that current vent systems uses more, wherein 409 materials relative to 439,436 decay resistances are poor, but 439,436 cost of material are relatively high.
Summary of the invention
The invention provides a kind of automobile exhaust system, object is to provide the automobile exhaust system that and low-cost stainless steel material high by a kind of stable performance, corrosion resistance manufactures, and manufactures the material of automobile exhaust system or price is high or the problem of corrosion-resistant in order to solve prior art.
In order to achieve the above object, described vent systems comprises support, outlet pipe, flange, thermal shield, suspension hook, middle baffler, after silencer and tail pipe, and their material is B409M material;
Described B409M material is stainless steel cold-rolled plate, its chemical composition is as follows: C≤0.02wt%, Mn≤1.00wt%, Si≤1.00wt%, P≤0.04wt%, S≤0.03wt%, Cr are 11.00-12.5wt%, Ni≤0.50wt%, N≤0.02wt%, Ti+Nb > 0.08+8x (C+N), Ti are 0.12-0.50wt%, Nb >=0.12wt%; Yield strength is 170-290MPa, tensile strength >=380MPa, according to elongation percentage >=28% of ISO 6892type 1, according to grain size >=5 grade of ASTM E112, and not containing banded structure.
As preferred embodiment, in described system foremost, described support is connected with one section of outlet pipe by flange; Thermal shield is wrapped in the outside of one section of outlet pipe front portion, and hook is positioned at the rear portion of this section of outlet pipe, and this section of outlet pipe is connected with another section of outlet pipe by flange; The rear portion of described another section of outlet pipe is connected with middle baffler, the other end of described middle baffler is connected with one section of outlet pipe again, this section of outlet pipe by Flange joint on the outlet pipe be connected with after silencer, the front-end and back-end of described after silencer are connected with hook respectively, and the rear end of baffler is also connected with tail pipe in the rear;
As preferred embodiment, described middle baffler comprises housing, internal baffle, front cover, hole pipe and rear end cover, and their material is B409M material;
As preferred embodiment, described front cover and rear end cover lay respectively at the front-end and back-end of middle baffler; Place the porose annular internal baffle of band in the intermediate radial of middle baffler, the size of this internal baffle coordinates with the interior size of middle baffler; Front cover, rear end cover and internal baffle are respectively equipped with hole, and hole pipe axially runs through front cover, rear end cover and internal baffle by described hole;
Described middle baffler passing hole pipe is connected with the outlet pipe at two ends respectively, and described suspension hook is connected with on front cover and rear end cover respectively.
As preferred embodiment, described after silencer comprises front cover, internal baffle, housing, internal baffle, suction tude, rear end cover and steam outlet pipe, and their material is B409M material;
As preferred embodiment, described front cover and rear end cover lay respectively at the front-end and back-end of after silencer, and respectively up with below with a hole; Be with porose internal baffle in the midfeather leading thread of after silencer to placement two, the size of this internal baffle coordinates with the interior size of described after silencer, and each with a hole respectively with below up; Suction tude is connected with this three with the hole above two internal baffles by the hole on front cover, and steam outlet pipe is connected with this three with the hole below two internal baffles by the hole on rear end cover; The portion band of described suction tude and steam outlet pipe is porose;
Described after silencer is connected with outlet pipe by suction tude, is connected with tail pipe by steam outlet pipe, and described suspension hook is connected on front cover and rear end cover.
As can be seen from above-mentioned technological scheme, the material of automobile exhaust system of the present invention is B409M material, because this uses B409M strong mechanical property, corrosion resistance high and low price, solve the material or corrosion-resistant of applying automobile exhaust system in the prior art or the high problem of price, therefore improve the decay resistance of automobile exhaust system, reduce the cost of part simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of automobile exhaust system;
Fig. 2 a is the schematic perspective view of middle baffler;
Fig. 2 b is the plan view of middle baffler;
Fig. 3 is the schematic diagram of internal baffle in middle baffler;
Fig. 4 a is the schematic perspective view of after silencer;
Fig. 4 b is the plan view of after silencer;
Fig. 5 is the schematic diagram of internal baffle in after silencer;
Fig. 6 is surperficial enlarged view and the grain size number certificate of B409M material.
Embodiment
Referring to accompanying drawing, the specific embodiment that develops simultaneously is described in detail automobile exhaust system of the present invention.
In Fig. 1, the automobile exhaust system of the embodiment of the present invention comprises support 1, outlet pipe 2, flange 3, thermal shield 4, suspension hook 5, flange 6, outlet pipe 7, outlet pipe 8, middle baffler 9, outlet pipe 10, flange 11, outlet pipe 12, after silencer 13, suspension hook 14, suspension hook 15 and tail pipe 16, and the material of these constituent elements is B409M material.
As shown in Figure 1, support 1 is connected with outlet pipe 2 by flange 3, thermal shield 4 is wrapped in the outside of outlet pipe 7 front portion, at outlet pipe 7 rear portion, suspension hook 5 is housed, outlet pipe 7 is connected with outlet pipe 8 by flange 6, one end of middle baffler 9 is connected with outlet pipe 8, the other end is connected with outlet pipe 10, outlet pipe 10 is connected with outlet pipe 12 by flange 11, one end of after silencer 13 is connected on outlet pipe 12, the other end is connected with tail pipe 16, is connected with suspension hook 14 and suspension hook 15 in the front-end and back-end of after silencer 13 respectively.
Middle baffler 9 shown in Fig. 2 a-b comprises housing 91, internal baffle 92, front cover 93, hole pipe 94 and rear end cover 95, and their material is also B409M material.
Front cover 93 and rear end cover 95 lay respectively at the front-end and back-end of middle baffler 9; Place the porose annular internal baffle 92 (as shown in Figure 3) of band in the intermediate radial of middle baffler 9, the size of internal baffle 92 coordinates with the interior size of middle baffler 9; Front cover 93, rear end cover 95 and internal baffle 92 are respectively equipped with hole, and hole pipe 94 axially runs through front cover 93, rear end cover 95 and internal baffle 92 by described hole.
Wherein, one end of the close front cover 93 of conduit 94 is connected with outlet pipe 8, is connected with outlet pipe 10 near one end of rear end cover 95.
After silencer 13 shown in Fig. 4 a-b comprises front cover 131, internal baffle 132, housing 133, suction tude 134, rear end cover 135, steam outlet pipe 136, and their material is B409M material equally.
Front cover 131 and rear end cover 135 lay respectively at the front-end and back-end of after silencer 13, and respectively up with below with a hole; Be with porose internal baffle 132 in the midfeather leading thread of after silencer 13 to placement two, the size of internal baffle 132 coordinates with the interior size of after silencer 13, and each with a hole respectively with below up; Suction tude 134 is connected with this three with the hole above two internal baffles 132 by the hole on front cover 131, and steam outlet pipe 136 is connected with this three with the hole below two internal baffles 132 by the hole on rear end cover 135; The portion band of suction tude 134 and steam outlet pipe 136 is porose.
Wherein, suction tude 134 is connected with outlet pipe 12, and steam outlet pipe 136 is connected with tail pipe 16; Suspension hook 14 is connected on front cover 131, and suspension hook 15 is connected on rear end cover 135.
This B409M material is stainless steel cold-rolled plate, its chemical composition is as follows: C≤0.02wt%, Mn≤1.00wt%, Si≤1.00wt%, P≤0.04wt%, S≤0.03wt%, Cr are 11.00-12.5wt%, Ni≤0.50wt%, N≤0.02wt%, Ti+Nb > 0.08+8x (C+N), Ti are 0.12-0.50wt%, Nb >=0.12wt%; Its yield strength is 170-290MPa, tensile strength >=380MPa, according to the elongation percentage 28% of ISO6892type1, is 5 grades or thinner, not containing banded structure according to the grain size of ASTM E112.
Due to B409M material carbon content, precious metal Cr that automobile exhaust system of the present invention uses, Nb composition is different from other 409 stainless steel materials, and having good uniformity of its metallographic structure, as shown in Figure 6, it is 5 grades or thinner according to the grain size of ASTM E112, therefore compared with 409 materials of the prior art, there is good decay resistance, and cost ratio 439 material and 436 materials low.
As can be seen from description above, the automobile exhaust system of the present invention employing B409M material has good decay resistance, reduces the cost of part simultaneously.
Claims (4)
1. an automobile exhaust system, comprises support, outlet pipe, flange, thermal shield, suspension hook, middle baffler, after silencer and tail pipe, it is characterized in that, in described vent systems, the material of each part mentioned above is B409M material;
Described B409M material is stainless steel cold-rolled plate, its chemical composition is as follows: C≤0.02wt%, Mn≤1.00wt%, Si≤1.00wt%, P≤0.04wt%, S≤0.03wt%, Cr are 11.00-12.5wt%, Ni≤0.50wt%, N≤0.02wt%, Ti+Nb>0.08+8x (C+N), Ti are 0.12 – 0.50wt%, Nb >=0.12wt%; Yield strength is 170 – 290MPa, tensile strength >=380MPa, according to elongation percentage >=28% of ISO 6892type 1, according to grain size >=5 grade of ASTM E112, and not containing banded structure;
Described middle baffler comprises housing, internal baffle, front cover, hole pipe and rear end cover, and their material is B409M material;
Described front cover and rear end cover lay respectively at the front-end and back-end of middle baffler; Place annular internal baffle with holes in the intermediate radial of middle baffler, the size of this internal baffle coordinates with the interior size of middle baffler; Front cover, rear end cover and internal baffle are respectively equipped with hole, and hole pipe axially runs through front cover, rear end cover and internal baffle by described hole;
Described middle baffler passing hole pipe is connected with the outlet pipe at two ends respectively, and described suspension hook is connected with on front cover and rear end cover respectively.
2. system according to claim 1, is characterized in that, in described system foremost, described support is connected with one section of outlet pipe by flange; Thermal shield is wrapped in the outside of one section of outlet pipe front portion, and hook is positioned at the rear portion of this section of outlet pipe, and this section of outlet pipe is connected with another section of outlet pipe by flange; The rear portion of described another section of outlet pipe is connected with middle baffler, the other end of described middle baffler is connected with one section of outlet pipe again, described one section of outlet pipe again by Flange joint on the outlet pipe be connected with after silencer, the front-end and back-end of described after silencer are connected with hook respectively, and the rear end of baffler is also connected with tail pipe in the rear.
3. system according to claim 1 and 2, is characterized in that, described after silencer comprises front cover, the first internal baffle, housing, the second internal baffle, suction tude, rear end cover and steam outlet pipe, and their material is B409M material.
4. system according to claim 3, is characterized in that, described front cover and rear end cover lay respectively at the front-end and back-end of after silencer, and respectively up with below with a hole; Be with porose internal baffle in the midfeather leading thread of after silencer to placement two, the size of this internal baffle coordinates with the interior size of described after silencer, and each with a hole respectively with below up; Suction tude is connected with this three with the hole above two internal baffles by the hole on front cover, and steam outlet pipe is connected with this three with the hole below two internal baffles by the hole on rear end cover; The portion band of described suction tude and steam outlet pipe is porose;
Described after silencer is connected with outlet pipe by suction tude, is connected with tail pipe by steam outlet pipe, and described suspension hook is connected on front cover and rear end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110298608.3A CN103032145B (en) | 2011-09-30 | 2011-09-30 | Vehicle exhaust system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110298608.3A CN103032145B (en) | 2011-09-30 | 2011-09-30 | Vehicle exhaust system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103032145A CN103032145A (en) | 2013-04-10 |
| CN103032145B true CN103032145B (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110298608.3A Active CN103032145B (en) | 2011-09-30 | 2011-09-30 | Vehicle exhaust system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103032145B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343517A (en) * | 2014-06-18 | 2015-02-11 | 南京海特汽车部件有限公司 | Automobile muffler assembly |
| CN104533587A (en) * | 2014-12-31 | 2015-04-22 | 无锡市佳宜车厢制造有限公司 | Thermal baffle applied to exhaust pipe |
| CN110761897A (en) * | 2019-11-27 | 2020-02-07 | 中石化四机石油机械有限公司 | Fire protection system and method for special operation equipment engine |
| CN113462973A (en) * | 2021-06-23 | 2021-10-01 | 上汽通用汽车有限公司 | Stainless steel material for automobile exhaust system and automobile exhaust system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07310541A (en) * | 1994-05-18 | 1995-11-28 | Nisshin Steel Co Ltd | Exhaust system member of excellent corrosion resistance against salt damage corrosion and manufacture thereof |
| CN2705604Y (en) * | 2003-01-25 | 2005-06-22 | 山东双力集团股份有限公司 | Exhaust muffler |
| CN201354669Y (en) * | 2009-01-19 | 2009-12-02 | 力帆实业(集团)股份有限公司 | Rear muffler for cars |
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2011
- 2011-09-30 CN CN201110298608.3A patent/CN103032145B/en active Active
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|---|---|
| CN103032145A (en) | 2013-04-10 |
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