CN203403930U - Catalyst of automobile exhaust system - Google Patents

Catalyst of automobile exhaust system Download PDF

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Publication number
CN203403930U
CN203403930U CN201320451841.5U CN201320451841U CN203403930U CN 203403930 U CN203403930 U CN 203403930U CN 201320451841 U CN201320451841 U CN 201320451841U CN 203403930 U CN203403930 U CN 203403930U
Authority
CN
China
Prior art keywords
expansion cavity
outlet pipe
exhaust system
automobile exhaust
catalyst converter
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 - Lifetime
Application number
CN201320451841.5U
Other languages
Chinese (zh)
Inventor
张静
李宁宁
傅广宇
蒲恒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chery Automobile Co Ltd
Original Assignee
SAIC Chery Automobile Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SAIC Chery Automobile Co Ltd filed Critical SAIC Chery Automobile Co Ltd
Priority to CN201320451841.5U priority Critical patent/CN203403930U/en
Application granted granted Critical
Publication of CN203403930U publication Critical patent/CN203403930U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

The utility model discloses a catalyst of an automobile exhaust system. The catalyst comprises a shell, a catalyst carrier is arranged inside the shell, a catalyst liner is arranged between the inner wall of the shell and the catalyst carrier, and the rear end of the shell is connected with an air outlet pipe. A first expansion cavity for slowing flow is formed in the front end of the shell. A second expansion cavity for stabilizing the flow and absorbing sounds is formed in the outer portion of the shell and the outer portion of the air outlet pipe. An air outlet hole which is communicated with the second expansion cavity is formed in the air outlet pipe. Sound-absorbing layers which wrap the shell and the air outlet pipe are arranged in the second expansion cavity. The catalyst of the automobile exhaust system can effectively reduce igniting time, and is good in catalytic reaction effect, low in noise and good in soundproofing effect.

Description

A kind of automobile exhaust system catalyst converter
Technical field
The utility model relates to a kind of automobile exhaust system catalyst converter.
Background technique
The major function of catalysis of exhaust gas systems device is cleaning of off-gas, and the conventional two-stage catalyst converter setting type of automobile exhaust emission system is catalyst converter under close coupling catalyst converter and base plate at present.Due to catalyst converter under base plate and engine exhaust port distant, exhaust airstream temperature reduces on the way gradually, causes under base plate catalyst converter ignition slower, light-off time is longer, exhaust fume catalytic reaction effect is not good.
Simultaneously due to after under layout base plate, catalyst converter causes the position of premuffler to lean on, yet from being beneficial to the angle that reduces exhaust sound, require premuffler as far as possible near vent systems front end high velocity air district, better to reduce exhaust airstream speed, thereby reduce because of fricative frictional noises of inwall such as high velocity air and exhaust duct, main mufflers; The arrangement of catalyst converter, premuffler under this kind of base plate, is unfavorable for the catalytic reaction of catalyst converter being also unfavorable for the noise elimination of premuffler.
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of effective minimizing light-off time is provided, and catalytic reaction is effective, and noise is low, the automobile exhaust system catalyst converter that soundproof effect is good.
To achieve these goals, the technical solution adopted in the utility model is:
This automobile exhaust system catalyst converter, comprises housing, in described housing, is provided with catalyst carrier, between described inner walls and described catalyst carrier, establishes catalyzer liner, and described housing rear end is connected with steam outlet pipe; At described housing front end, be provided with the first expansion cavity; At described housing and described steam outlet pipe outside, establish the second expansion cavity; On described steam outlet pipe, establish the air outlet hole being communicated with described the second expansion cavity; In described the second expansion cavity, establish the sound-absorption layer that is wrapped in described housing and described steam outlet pipe outside.
Described sound-absorption layer is filled full described the second expansion cavity.
Described the first expansion cavity and the second expansion cavity are the cylinder structure of the both ends open of hollow.
Preferably described the first expansion cavity middle part is column casing body, and the two ends of the first expansion cavity joining with middle part are vertebra cylindrical shell, and described the first end, expansion cavity two ends bore is all less than post cylinder internal diameter.
Preferably described second expansion cavity one end is enclosed within on the vertebra cylindrical shell of described first expansion cavity one end after extending; Between described the second expansion cavity and described the first expansion cavity, establish sound-absorption layer.
Preferably described the second expansion cavity is cylinder, and the end, one end that described the second expansion cavity is positioned at steam outlet pipe is cone, and end, one end bore that described the second expansion cavity is positioned at steam outlet pipe is less than described cylinder internal diameter.
The utility model has the advantage of: this automobile exhaust system catalyst converter, at housing front end, establish the first expansion cavity, to reduce catalyst converter carrier front-end face airspeed, simultaneously diffusing air current make its uniformly in housing catalyst converter carrier pass through, be conducive to catalyzer waste gas is carried out to catalytic reaction more fully, excellent catalytic effect.
The second expansion cavity is established in catalyst converter rear end, and the second expansion cavity the inside is filled acoutic fibre board material and wrapped housing and steam outlet pipe, and the second expansion cavity can form insulation effect to catalyst converter on the one hand, makes catalyzer reach sooner initiation temperature, reduces light-off time; This second expansion cavity forms current stabilization effect to exhaust high-speed pulse air-flow on the other hand, thereby reduce exhaust airstream speed, reduces the frictional noise that high velocity air produces; The sound absorbing material that fill the inside also can be eliminated the exhaust sound of high frequency, thereby the high velocity air after current stabilization just can flow into rear end main muffler more reposefully, reaches better soundproof effect.
Accompanying drawing explanation
The content of below each width accompanying drawing of the utility model specification being expressed and the mark in figure are briefly described:
Fig. 1 is the structural representation of the utility model automobile exhaust system catalyst converter;
Fig. 2 is the structural representation of the first expansion cavity of Fig. 1 automobile exhaust system catalyst converter;
Fig. 3 is the catalyst converter body structure schematic diagram of Fig. 1 automobile exhaust system catalyst converter;
Fig. 4 is the structural representation of the steam outlet pipe of Fig. 1 automobile exhaust system catalyst converter;
Fig. 5 is the structural representation of the second expansion cavity of Fig. 1 automobile exhaust system catalyst converter;
Mark in above-mentioned figure is:
1, the first expansion cavity, 2, catalyst carrier, 3, catalyzer liner, 4, housing, 5, steam outlet pipe, the 6, second expansion cavity, 7, sound-absorption layer.
Embodiment
Contrast accompanying drawing below, by the description to optimum embodiment, embodiment of the present utility model is described in further detail.
As shown in Figures 1 to 5, this automobile exhaust system catalyst converter, comprises housing 4, is provided with catalyst carrier 2 in housing 4, between housing 4 inwalls and catalyst carrier 2, establishes catalyzer liner 3; Housing 4, catalyst carrier 2 and catalyzer liner 3 form catalyst converter body; Housing 4 rear ends are connected with steam outlet pipe 5; The first expansion cavity 1, the first expansion cavity 1 that is provided with unhurried current at housing 4 front ends is little expansion cavity; The second expansion cavity 6, the second expansion cavities 6 of establishing current stabilization and sound-absorbing in housing 4 and steam outlet pipe 5 outsides are large expansion cavity; On steam outlet pipe 5, establish the air outlet hole being communicated with the second expansion cavity 6, gas can enter the second expansion cavity 6 from steam outlet pipe 5 by air outlet hole, then discharge from the second expansion cavity 6 enters steam outlet pipe 5; In the second expansion cavity 6, establish the sound-absorption layer 7 that is wrapped in housing 4 and steam outlet pipe 5 outsides, sound-absorption layer 7 is acoutic fibre board layer.
Preferably sound-absorption layer 7 is filled full the second expansion cavity 6, like this sound-absorbing and better heat preservation.
The first expansion cavity 1 and the second expansion cavity 6 are the cylinder structure of the both ends open of hollow.
Preferably the first expansion cavity 1 middle part is column casing body, and the two ends of the first expansion cavity 1 joining with middle part are vertebra cylindrical shell, and the first expansion cavity 1 end, two ends bore is all less than post cylinder internal diameter.
Preferably second expansion cavity 6 one end are enclosed within on the vertebra cylindrical shell of first expansion cavity 1 one end after extending; Between the second expansion cavity 6 and the first expansion cavity 1, establish sound-absorption layer 7.
Preferably the second expansion cavity 6 is cylinder, and the end, one end that the second expansion cavity 6 is positioned at steam outlet pipe 5 is cone, and end, one end bore that the second expansion cavity 6 is positioned at steam outlet pipe 5 is less than cylinder internal diameter.
Principle of the present utility model: first high-speed pulse exhaust airstream enters the first expansion cavity 1 from catalyst converter front end pipeline, the first 1 pair of expansion cavity high-speed pulse air-flow carries out reduction of speed current stabilization, make air-flow evenly by catalyst converter body, the expansionary effect of the first expansion cavity 1 can reduce part pneumatic noise simultaneously.The air-flow flowing out from catalyst converter body enters into the second expansion cavity 6 by steam outlet pipe 5, and high velocity air reduces its flow velocity and reduces pneumatic noise with sound-absorption layer 7 frictions of wherein filling in the second expansion cavity 6.Air-flow after the second expansion cavity 6 reduction of speed current stabilizations is mild inflow rear portion main muffler again, from effectively reducing pneumatic noise.7 pairs of catalyst converter bodies of sound-absorption layer of simultaneously filling in the second expansion cavity 6 form parcel insulation effect, are conducive to improve the ignition performance of catalyzer.
The utility model specific implementation is not subject to the restrictions described above, as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technological scheme carry out, all within protection domain of the present utility model.

Claims (6)

1. an automobile exhaust system catalyst converter, comprises housing, in described housing, is provided with catalyst carrier, between described inner walls and described catalyst carrier, establishes catalyzer liner, and described housing rear end is connected with steam outlet pipe; It is characterized in that: at described housing front end, be provided with the first expansion cavity; At described housing and described steam outlet pipe outside, establish the second expansion cavity; On described steam outlet pipe, establish the air outlet hole being communicated with described the second expansion cavity; In described the second expansion cavity, establish the sound-absorption layer that is wrapped in described housing and described steam outlet pipe outside.
2. automobile exhaust system catalyst converter as claimed in claim 1, is characterized in that: described sound-absorption layer is filled full described the second expansion cavity.
3. automobile exhaust system catalyst converter as claimed in claim 1 or 2, is characterized in that: described the first expansion cavity and the second expansion cavity are the cylinder structure of the both ends open of hollow.
4. automobile exhaust system catalyst converter as claimed in claim 3, it is characterized in that: described the first expansion cavity middle part is column casing body, the two ends of the first expansion cavity joining with middle part are vertebra cylindrical shell, and described the first end, expansion cavity two ends bore is all less than post cylinder internal diameter.
5. automobile exhaust system catalyst converter as claimed in claim 4, is characterized in that: described second expansion cavity one end is enclosed within on the vertebra cylindrical shell of described first expansion cavity one end after extending; Between described the second expansion cavity and described the first expansion cavity, establish sound-absorption layer.
6. automobile exhaust system catalyst converter as claimed in claim 5, it is characterized in that: described the second expansion cavity is cylinder, the end, one end that described the second expansion cavity is positioned at steam outlet pipe is cone, and end, one end bore that described the second expansion cavity is positioned at steam outlet pipe is less than described cylinder internal diameter.
CN201320451841.5U 2013-07-26 2013-07-26 Catalyst of automobile exhaust system Expired - Lifetime CN203403930U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320451841.5U CN203403930U (en) 2013-07-26 2013-07-26 Catalyst of automobile exhaust system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320451841.5U CN203403930U (en) 2013-07-26 2013-07-26 Catalyst of automobile exhaust system

Publications (1)

Publication Number Publication Date
CN203403930U true CN203403930U (en) 2014-01-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320451841.5U Expired - Lifetime CN203403930U (en) 2013-07-26 2013-07-26 Catalyst of automobile exhaust system

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017008695A1 (en) * 2015-07-10 2017-01-19 中车南京浦镇车辆有限公司 Flow regulation and stabilization device preventing air flow instability
CN107514350A (en) * 2017-08-21 2017-12-26 珠海格力电器股份有限公司 Silencer and heat pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017008695A1 (en) * 2015-07-10 2017-01-19 中车南京浦镇车辆有限公司 Flow regulation and stabilization device preventing air flow instability
CN107514350A (en) * 2017-08-21 2017-12-26 珠海格力电器股份有限公司 Silencer and heat pump
CN107514350B (en) * 2017-08-21 2023-04-07 珠海格力电器股份有限公司 Silencer and heat pump system

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract
EE01 Entry into force of recordation of patent licensing contract

Assignee: Wuhu Kai wing Automobile Co.,Ltd.

Assignor: CHERY AUTOMOBILE Co.,Ltd.

Contract record no.: 2017990000478

Denomination of utility model: A kind of automobile exhaust system catalyst converter

Granted publication date: 20140122

License type: Common License

Record date: 20171208

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20140122