CN204921108U - Automobile exhaust's catalytic conversion device - Google Patents
Automobile exhaust's catalytic conversion device Download PDFInfo
- Publication number
- CN204921108U CN204921108U CN201520464553.2U CN201520464553U CN204921108U CN 204921108 U CN204921108 U CN 204921108U CN 201520464553 U CN201520464553 U CN 201520464553U CN 204921108 U CN204921108 U CN 204921108U
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- China
- Prior art keywords
- housing
- lambda sensor
- catalyst carrier
- vehicle exhaust
- convention design
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses an automobile exhaust's catalytic conversion device, include the casing of being connected with automobile engine's gas vent and fix oxygen sensor on the casing, be provided with catalyst support in the casing, the last coating of catalyst support has the catalyst coating, catalyst support with be provided with between the casing and be used for fixing catalyst support's liner, the utility model provides an automobile exhaust's catalytic conversion device compact structure has reduced the part that uses to help reduction in production cost, in addition, owing to compressed the distance of catalytic conversion device apart from the gas vent of engine, make the catalytic conversion device heated more easily, thereby improved the catalytic conversion efficiency of tail gas.
Description
Technical field
The utility model relates to a kind of catalytic convention design, particularly relates to a kind of catalytic convention design of vehicle exhaust.
Background technique
Along with the harshness day by day of environmental protection requirement; catalytic converter installed by more and more many automobiles; catalytic converter is a kind of outer purifier be arranged in automobile exhaust systems; it can change the harmful gases such as CO, the NOx in vehicle exhaust into harmless carbon dioxide, water and nitrogen by oxidation reaction and reduction reaction, thus reaches the effect of purifying vehicle exhaust.Automobile exhaust systems of the prior art assembles single-stage close coupled type catalytic converter usually, and only there is a carrier single-stage close coupled type catalytic converter inside, and catalytic conversion efficiency limits by himself volume.Along with adding of Abgasgesetz is tight, the catalytic conversion efficiency that automobile exhaust systems needs the volume increasing catalyst converter to improve, and be all subject to the restriction in car load front deck space due to the arrangement space of motor, so prior art adopts usually increases chassis type catalytic converter to improve tail gas catalyzed transformation efficiency.But newly-increased chassis type catalytic converter not only can increase the workload of part exploitation, also can make automobile exhaust systems complex structure, finally cause cost to raise.
Model utility content
For prior art Problems existing, the purpose of this utility model is to provide a kind of catalytic convention design of vehicle exhaust, and this catalytic convention design can simplify the catalytic convention design of automobile exhaust systems, reduces costs.
The purpose of this utility model is achieved through the following technical solutions:
A kind of catalytic convention design of vehicle exhaust, comprise the housing and fixing lambda sensor on the housing that are connected with the relief opening of motor car engine, catalyst carrier is provided with in described housing, described catalyst carrier is coated with catalyst coat, the liner for fixing described catalyst carrier is provided with between described catalyst carrier and described housing, wherein
Described catalyst carrier comprises the first carrier and Second support, and described first carrier is arranged near one end of the suction port of described housing, and described Second support is arranged near one end of the relief opening of described housing;
Described lambda sensor comprises the first lambda sensor and the second lambda sensor, described first lambda sensor is arranged on the housing and between described shell air inlet and described first carrier, and described second lambda sensor is arranged on the housing and between described first lambda sensor and described Second support.
Further, the suction port of described housing is gradually to the taper suction port that the mouth of pipe shrinks, and the relief opening of described housing is gradually to the taper relief opening that the mouth of pipe shrinks.
Further, described housing is shaping by corrosion resistant plate integrated punching.
Further, the described lambda sensor probe that comprises fixed base and removably connect with described fixed base.
Further, described fixed base is connected with described case weld.
Further, described fixed base is threaded with described probe.
Further, described catalyst carrier is made up of ceramic honey comb, and described liner is made up of ceramic fiber.
Further, described catalyst carrier is provided with multiple through hole along airflow direction.
The catalytic convention design compact structure of the vehicle exhaust that the utility model provides, decrease the part of use, thus contribute to reducing cost of production, in addition, owing to have compressed the distance of the relief opening of catalytic convention design distance motor, catalytic convention design is more easily heated, thus improves the catalytic conversion efficiency of tail gas.
Accompanying drawing explanation
The catalytic convention design schematic diagram of a kind of preferred vehicle exhaust of Fig. 1 the utility model.
Embodiment
Below in conjunction with accompanying drawing, a preferred embodiment of the present utility model is described in detail.The identical reference character of wherein identical component represents.It should be noted that, the word "front", "rear" of use is described below, "left", "right", "up" and "down" refer to direction in accompanying drawing, word " interior " and " outward " refer to the direction towards or away from particular elements geometrical center respectively.
As shown in Figure 1, the catalytic convention design of the vehicle exhaust that the utility model provides comprises the housing 1 be connected with the relief opening of motor car engine and the lambda sensor 3 be fixed on described housing 1, the inside of described housing 1 is provided with catalyst carrier 2, described catalyst carrier is coated with catalyst coat, between described catalyst carrier 2 and described housing 1, is also provided with the liner for fixing described catalyst carrier 2.
As a kind of preferred version of the present utility model, described catalyst coat is the noble coatings such as platinum, palladium, rhodium, certainly, the noble metal catalysts such as platinum, palladium, rhodium are adopted to be only a kind of preferred version of the present utility model, the utility model can also select other catalyzer known in those skilled in the art according to exhaust gas component, repeats no more herein.
Catalyst coat is preferably attached in catalyst carrier 2 by the utility model, catalyst carrier 2 can strengthen the mechanical strength of catalyzer effectively, improve the performances such as it resistance to wears, shock resistance, antigravity, resistance to compression, high temperature resistance, phase transformation, in addition, catalyst carrier 2 also contribute to improving catalyzer conductivity, especially when using the noble metal catalysts such as platinum, palladium, rhodium, catalyst carrier can by the active component high degree of dispersion of catalyzer, thus reduce catalyzer use amount, contribute to reducing costs.Liner of the present utility model preferably adopts ceramic honey comb to make, and ceramic honey comb can have higher specific surface area, therefore, it is possible to provide enough attachment fixed spaces for catalyzer.What those skilled in the art should understand that is, ceramic honey comb is only a kind of preferred version of the present utility model, the utility model can also adopt known in those skilled in the artly has sufficient mechanical strength and other material of chemical stability carrys out Kaolinite Preparation of Catalyst carrier, repeats no more herein.
On the basis of above-described embodiment, the catalyst carrier 2 of the present embodiment is also preferably provided with multiple through hole along airflow direction, multiple through hole is offered in described catalyst carrier 2 inside, not only can improve the gas fluidity of catalyst carrier 2, catalyst carrier is avoided to block housing 1, effectively can also increase the surface area of carrier, for the attachment of catalyzer fixedly provides more space, thus contribute to the catalytic conversion efficiency improving tail gas.
The utility model also arranges bed course between described catalyst carrier 2 and described housing 1, described bed course preferably has ceramic fiber to make, ceramic fiber have lightweight, high temperature resistant, good thermal stability, heat conductivity are low, specific heat is little and the advantage such as mechanical resistant vibrations, therefore, the vibratility that ceramic fiber can reduce catalyst carrier 2 is effectively set between described catalyst carrier 2 and described housing 1, namely improves the stability of catalyst carrier 2.Certainly, ceramic fiber is only a kind of preferred version of the present embodiment, and described cushioning material can also adopt mechanical resistant known in those skilled in the art to shake and good other material of chemical stability, repeats no more herein.
Catalyst carrier 2 of the present utility model comprises the first carrier 21 and Second support 22, as shown in Figure 1, described first carrier 21 is arranged near one end of the suction port of described housing 1, described Second support 22 is arranged near one end of the relief opening of described housing 1, after the tail gas that engine exhaust port discharges enters described housing 1, carry out purified treatment by described first carrier 21 and described Second support 22 successively.
Those skilled in the art will be appreciated that, the air fuel ratio of mixed gas is once deviation theory air fuel ratio, three-way catalyst will sharply decline to the purifying ability of the harmful gases such as CONOx, therefore on housing, lambda sensor is installed at the utility model, in order to detect the concentration of oxygen in exhaust, and send feedback signal to control module, then control the increase and decrease of oil sprayer fuel injection quantity by control module, thus by the air-fuel ration control of mixed gas near theoretical value.As shown in Figure 1, lambda sensor 3 of the present utility model comprises the first lambda sensor 31 and the second lambda sensor 32, in order to measure the oxygen concentration entered in the first carrier 21 and Second support 22 air-flow respectively, described first lambda sensor 31 to be arranged on described housing 1 and between described housing 1 suction port and described first carrier 21, and described second lambda sensor 32 to be arranged on described housing 1 and between described first lambda sensor 21 and described Second support 22.
As a kind of preferred version of the present utility model, the suction port of described housing 1 is gradually to the taper suction port that the mouth of pipe shrinks, wide mouth part and the described housing 1 of described taper suction port are tightly connected, and the cone mouth end of described taper suction port and the outlet pipe of upstream are tightly connected; Similarly, the relief opening of described housing 1 is preferably gradually to the taper relief opening that the mouth of pipe shrinks, and wide mouth part and the described housing 1 of described taper relief opening are tightly connected, and the cone mouth end of described taper relief opening and the outlet pipe in downstream are tightly connected.In the present embodiment gradually to the mouth of pipe shrink taper suction port or relief opening can make air-flow housing 1 described in inlet and outlet reposefully, avoid the sharply change causing air-flow velocity due to the flip-flop of spout diameter.
On the basis of above-described embodiment, in order to improve the sealing of described housing 1, the housing 1 of the present embodiment is preferably shaping by corrosion resistant plate integrated punching, integrated Stainless Steel Shell not only has good sealing, the preparation process of housing 1 can also be simplified, reduce soldering point, contribute to the working life extending housing 1.Certainly, the utility model also can adopt other material with certain corrosion resistance and intensity to prepare housing 1, is not limited to stainless steel.
As a kind of preferred version of the present utility model, the probe that described lambda sensor 3 comprises fixed base and removably connects with described fixed base, during assembling, described housing 1 is offered the through hole for installing described lambda sensor, described fixed base is fixedly mounted on described through hole, described fixed base is preferably welded to connect with described housing 1, described fixed base is preferably threaded with described probe, described probe enters in described housing 1 through described fixed base and described through hole, monitors the oxygen concentration in housing 1.
In sum, the catalytic convention design compact structure of the vehicle exhaust that the utility model provides, decrease the part of use, thus contribute to reducing cost of production, in addition, owing to have compressed the distance of the relief opening of catalytic convention design distance motor, catalytic convention design is more easily heated, thus improves the catalytic conversion efficiency of tail gas.
Last it is noted that above embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technological scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment's technological scheme of the utility model.
Claims (8)
1. the catalytic convention design of a vehicle exhaust, it is characterized in that, comprise the housing and fixing lambda sensor on the housing that are connected with the relief opening of motor car engine, catalyst carrier is provided with in described housing, described catalyst carrier is coated with catalyst coat, the liner for fixing described catalyst carrier is provided with, wherein between described catalyst carrier and described housing
Described catalyst carrier comprises the first carrier and Second support, and described first carrier is arranged near one end of the suction port of described housing, and described Second support is arranged near one end of the relief opening of described housing;
Described lambda sensor comprises the first lambda sensor and the second lambda sensor, described first lambda sensor is arranged on the housing and between described shell air inlet and described first carrier, and described second lambda sensor is arranged on the housing and between described first lambda sensor and described Second support.
2. the catalytic convention design of vehicle exhaust according to claim 1, is characterized in that, the suction port of described housing is gradually to the taper suction port that the mouth of pipe shrinks, and the relief opening of described housing is gradually to the taper relief opening that the mouth of pipe shrinks.
3. the catalytic convention design of vehicle exhaust according to claim 2, is characterized in that, described housing is shaping by corrosion resistant plate integrated punching.
4. the catalytic convention design of vehicle exhaust according to claim 1, is characterized in that, the probe that described lambda sensor comprises fixed base and removably connects with described fixed base.
5. the catalytic convention design of vehicle exhaust according to claim 4, is characterized in that, described fixed base is connected with described case weld.
6. the catalytic convention design of vehicle exhaust according to claim 4, is characterized in that, described fixed base is threaded with described probe.
7. the catalytic convention design of the vehicle exhaust according to any one of claim 1-6, is characterized in that, described catalyst carrier is made up of ceramic honey comb, and described liner is made up of ceramic fiber.
8. the catalytic convention design of vehicle exhaust according to claim 7, is characterized in that, described catalyst carrier is provided with multiple through hole along airflow direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520464553.2U CN204921108U (en) | 2015-07-01 | 2015-07-01 | Automobile exhaust's catalytic conversion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520464553.2U CN204921108U (en) | 2015-07-01 | 2015-07-01 | Automobile exhaust's catalytic conversion device |
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| Publication Number | Publication Date |
|---|---|
| CN204921108U true CN204921108U (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520464553.2U Active CN204921108U (en) | 2015-07-01 | 2015-07-01 | Automobile exhaust's catalytic conversion device |
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| CN (1) | CN204921108U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111195481A (en) * | 2020-02-13 | 2020-05-26 | 长安大学 | Volatile organic pollutant purification device and method |
-
2015
- 2015-07-01 CN CN201520464553.2U patent/CN204921108U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111195481A (en) * | 2020-02-13 | 2020-05-26 | 长安大学 | Volatile organic pollutant purification device and method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |