CN103967576A - Manifold assembly with three-way catalyst - Google Patents
Manifold assembly with three-way catalyst Download PDFInfo
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- CN103967576A CN103967576A CN201410053526.6A CN201410053526A CN103967576A CN 103967576 A CN103967576 A CN 103967576A CN 201410053526 A CN201410053526 A CN 201410053526A CN 103967576 A CN103967576 A CN 103967576A
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- catalyst converter
- converter body
- exhaust manifolds
- manifold assembly
- gas exhaust
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Abstract
The invention provides a manifold assembly with a three-way catalyst. The manifold assembly comprises air inlet flanges of a thermal deformation resistant groove, four exhaust manifolds, a catalyst body and an air outlet flange. The front faces of the air inlet flanges are directly connected with an engine, the back faces of the air inlet flanges are connected with the air inlet ends of the four exhaust manifolds respectively, and the other ends of two exhaust manifolds are made to be in D shapes to be jointed through pipe end forming and are connected with the catalyst body; the other ends of the other two exhaust manifolds are made to be in D shapes to be jointed through pipe end forming and are connected with the catalyst body, and the catalyst body is directly connected with the air outlet flange. The ignition time of the catalyst is shortened, and work temperature is improved.
Description
Technical field
The present invention relates to a kind of automobile exhaust system, particularly a kind of manifold assembly with ternary catalyzing unit.
Background technique
In prior art, general catalytic converter assembly body is arranged on the outlet pipe assembly after enmgine exhaust, be subject to like this restriction of the spatial position, chassis of automobile, catalyst converter generally surpasses 500mm from the distance of motor, because distance is too far away, the time of the ignition of catalyst converter is longer, and the initiation temperature of catalyst converter is 280 ℃ of left and right, operating temperature is not less than 400 ℃, therefore when cold start-up, the effect purifying is not good yet, be difficult to reach state's IV, Dao Liao state V particularly, automobile all must adopt the manifold with three-element catalytic, manifold is converted into the thin-walled manifold (assembly) with three-element catalytic from cast iron manifold completely.Generally can stamping forming punching type manifold with the thin-walled manifold assembly of three-element catalytic, also can adopt tubular type manifold.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of exhaust manifold assembly with ternary catalyzing unit of, good purification short from motor near distance, light-off time, what the manifold assembly of band ternary catalyzing unit of the present invention adopted is tubular type pipe, and converging of manifold adopts D type structure.
The invention provides a kind of manifold assembly with ternary catalyzing unit, comprise: three inlet flanges with thermal deformation resistant groove by mounting hole, 4 gas exhaust manifolds, catalyst converter body and the flanges of giving vent to anger, wherein, inlet flange is positive to be directly connected with motor, the reverse side of inlet flange with link together with the inlet end of four gas exhaust manifolds respectively, the other end of two gas exhaust manifolds becomes respectively D font by pipe end moulding and converges, and is connected with catalyst converter body; The other end of other two gas exhaust manifolds becomes respectively D font by pipe end moulding and converges, and is connected with catalyst converter body, and catalyst converter body is directly connected with the flange of giving vent to anger.
Further, this catalyst converter body with the manifold assembly of ternary catalyzing unit comprises upper shell, lower shell body, lambda sensor nut, catalyzer and liner, wherein lambda sensor nut is connected with the hole of the upper shell of catalyst converter body, upper shell and lower shell body adopt pressing method that catalyzer is assembled by liner, and described upper shell is connected with lower shell body.
Further, the ceramic honeycomb carrier that this catalyst carrier with the catalyst converter body of the manifold assembly of ternary catalyzing unit adopts.
Beneficial effect of the present invention: catalyst converter body is directly connected with gas exhaust manifold, catalyst converter is about 200mm from the distance of motor, shortened the time of the ignition of catalyst converter, improved operating temperature, can guarantee that the operating temperature of catalyst converter is greater than the optimum working temperature of 450 degree, the effect purifying improves greatly, and gas discharging can reach state's IV, requirement more than state's V after testing.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of manifold assembly with ternary catalyzing unit of the present invention;
Fig. 2 is the structural representation of catalyst converter body of the present invention;
Fig. 3 is the structural representation of a kind of inlet flange of the present invention.
In figure, 1, inlet flange, 2,3,4,5, gas exhaust manifold, 6, catalyst converter body, 7, the flange of giving vent to anger, 8,9,10, lambda sensor nut, the flange of giving vent to anger, 30,40, the interface of catalyst converter body 6,101, upper shell, 102, liner, 103, catalyzer, 104 lower shell bodys, 120,130,140,150, the inlet end on inlet flange 1,160, protecgulum cavity, 170, the rear end of catalyst converter body.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described, is to be noted that described embodiment is only intended to be convenient to the understanding of the present invention, and it is not played to any restriction effect.
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
As shown in Figure 1-2, the invention provides a kind of manifold assembly with ternary catalyzing unit, comprise, article three, by the wide of mounting hole, be inlet flange 1,4 gas exhaust manifold 2-5, catalyst converter bodies 6 of 3 ± 0..5 thermal deformation resistant groove, the flange 7 of giving vent to anger, catalyst converter body comprises upper shell 101, lower shell body 104, lambda sensor nut 8-10, catalyzer 103 and liner 104.Wherein, four gas exhaust manifolds respectively with 4 inlet ends (inlet end is a hole specifically) 120 of inlet flange, 130,140,150 connect, and two twenty percent D fonts converge, and are then connected with catalyst converter body 6 respectively, catalyst converter body 6 is directly connected with the flange 7 of giving vent to anger, and the flange of giving vent to anger here can be also steam outlet pipe.Inlet flange 1 is positive to be directly connected with motor, its reverse side and welding together with the inlet end of four gas exhaust manifold 2-5 respectively; The other end of gas exhaust manifold 2 and gas exhaust manifold 3 becomes respectively D type by O type by pipe end moulding, welds together, and refills in the interface 30 of catalyst converter body 6, is welded as a whole; The other end of gas exhaust manifold 4, gas exhaust manifold 5 becomes respectively D type by O type by pipe end moulding, welds together, and refills in the interface 40 of catalyst converter body 6, is welded as a whole;
Lambda sensor nut 8 is welded on the hole of upper shell of catalyst converter body 6, upper shell 101, lower shell body 104 is the unexpansive liner 102 that meets by edge, adopts pressing method that catalyzer 103 is assembled, then upper shell 101 and lower shell body 104 are welded together; Catalyst converter body welds together by welding and the flange 17 of giving vent to anger.
The ceramic honeycomb carrier that catalyzer 103 carriers in catalyst converter body 6 adopt; It is the unexpansive liner that meets that catalyzer and metal shell adopt edge, and the unexpansive liner, catalyst carrier, catalyst converter housing of meeting adopts pressing method assembling, between other each parts, all adopts with welding manner and links together.
Motor discharge containing harmful gas, for example: carbonoxide CO, hydrocarbon HC, oxynitrides NOx, by the hole 120 on the inlet flange 1 being connected with motor, 130, 140, 150, enter into gas exhaust manifold 2-5, then flow in the protecgulum cavity 160 of catalyst converter body, in the protecgulum cavity 160 of catalyst converter body, mix fully, and by being arranged on the lambda sensor on the lambda sensor nut 10 of upper shell 101, the relevant parameter of the harmful gas of exhaust is fed back on ECU, by ECU, carry out again the fuel injection quantity of control engine, arrive rational firing effect.Harmful gas is flowed through containing the ceramic honeycomb catalyst 103 of precious metal from the protecgulum cavity 160 of catalyst converter body again,
Harmful gas is when flowing through the carrier 103 of ceramic honeycomb catalyst, the in the situation that of high temperature, under the effect of catalyzer, there is oxidation reaction, reduction reaction and redox reaction, make carbon monoxide CO, hydrocarbon HC, oxynitrides NOx be converted into innoxious substance carbon dioxide CO2, water H2O, nitrogen N 2 etc., then the rear end 170 by catalyst converter body is discharged in next parts of inflow that are connected with the flange 7 of giving vent to anger.
Because manifold is connected with motor, the gas that motor is discharged is more than 800 ℃, and vehicle is 800 ℃ of left and right of temperature of manifold in operation, and when vehicle stop moves, minimum temperature can make the inlet flange being connected with motor in use produce distortion-10 once, causes engine cylinder mouth to be connected gas leakage with manifold, affect like this emission effect of vehicle, environment is had to pollution, and, because row's temperature of engine cylinder mouth is high, fragile other component that leak gas, also vehicle fire likely.
The distortion of in use producing in order to solve gas exhaust manifold, causes the factor of leaking gas.Through for a long time test, my company is at non-binding of the inlet flange of manifold, and the position in inlet flange hole has gone out out groove, and the width≤3.2mm of groove has reduced the distortion that manifold flange face is produced because expanding with heat and contract with cold, and has reduced gas leak phenomenon.
Describing is above only a specific embodiment of the present invention, and obviously anyone modification of doing of related domain or local replacement under technological scheme of the present invention instructs, all belong to the scope that the claims in the present invention book limits.
Claims (3)
1. the manifold assembly with ternary catalyzing unit, it is characterized in that, comprise: three inlet flanges by the thermal deformation resistant groove of mounting hole, 4 gas exhaust manifolds, catalyst converter body and the flanges of giving vent to anger, wherein, inlet flange is positive to be directly connected with motor, the reverse side of inlet flange with link together with the inlet end of four gas exhaust manifolds respectively, the other end of two gas exhaust manifolds becomes respectively D font by pipe end moulding and converges, and is connected with catalyst converter body; The other end of other two gas exhaust manifolds becomes respectively D font by pipe end moulding and converges, and is connected with catalyst converter body, and catalyst converter body is directly connected with the flange of giving vent to anger.
2. the manifold assembly with ternary catalyzing unit as claimed in claim 1, it is characterized in that, described catalyst converter body comprises upper shell, lower shell body, lambda sensor nut, catalyzer and liner, wherein lambda sensor nut is connected with the hole of the upper shell of catalyst converter body, upper shell and lower shell body adopt pressing method that catalyzer is assembled by liner, and described upper shell is connected with lower shell body.
3. the manifold assembly with ternary catalyzing unit as claimed in claim 1, is characterized in that, the ceramic honeycomb carrier that the intrinsic catalyst carrier of described catalyst converter adopts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410053526.6A CN103967576A (en) | 2014-02-17 | 2014-02-17 | Manifold assembly with three-way catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410053526.6A CN103967576A (en) | 2014-02-17 | 2014-02-17 | Manifold assembly with three-way catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103967576A true CN103967576A (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410053526.6A Pending CN103967576A (en) | 2014-02-17 | 2014-02-17 | Manifold assembly with three-way catalyst |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107636269A (en) * | 2015-08-05 | 2018-01-26 | 株式会社久保田 | Emission-control equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001041034A (en) * | 1999-07-30 | 2001-02-13 | Aichi Mach Ind Co Ltd | Connecting structure of exhaust manifold and catalyst case |
| US20040074095A1 (en) * | 2002-07-15 | 2004-04-22 | Stempien Vincent M. | Electromagnetic pulse welding of vehicle engine and exhaust components |
| CN201517436U (en) * | 2009-05-31 | 2010-06-30 | 无锡红湖消声器有限公司 | Catalyst with manifold pipe |
| CN202273740U (en) * | 2011-10-13 | 2012-06-13 | 力帆实业(集团)股份有限公司 | Engine exhaust manifold assembly with three-way catalytic converter |
| CN103244249A (en) * | 2013-05-07 | 2013-08-14 | 上汽通用五菱汽车股份有限公司 | Tightly-coupled exhaust manifold assembly |
| CN103375240A (en) * | 2012-04-12 | 2013-10-30 | 重庆长安汽车股份有限公司 | Exhaust manifold assembly |
-
2014
- 2014-02-17 CN CN201410053526.6A patent/CN103967576A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001041034A (en) * | 1999-07-30 | 2001-02-13 | Aichi Mach Ind Co Ltd | Connecting structure of exhaust manifold and catalyst case |
| US20040074095A1 (en) * | 2002-07-15 | 2004-04-22 | Stempien Vincent M. | Electromagnetic pulse welding of vehicle engine and exhaust components |
| CN201517436U (en) * | 2009-05-31 | 2010-06-30 | 无锡红湖消声器有限公司 | Catalyst with manifold pipe |
| CN202273740U (en) * | 2011-10-13 | 2012-06-13 | 力帆实业(集团)股份有限公司 | Engine exhaust manifold assembly with three-way catalytic converter |
| CN103375240A (en) * | 2012-04-12 | 2013-10-30 | 重庆长安汽车股份有限公司 | Exhaust manifold assembly |
| CN103244249A (en) * | 2013-05-07 | 2013-08-14 | 上汽通用五菱汽车股份有限公司 | Tightly-coupled exhaust manifold assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107636269A (en) * | 2015-08-05 | 2018-01-26 | 株式会社久保田 | Emission-control equipment |
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Application publication date: 20140806 |
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