CN107524504A - A kind of automobile three-way catalysts - Google Patents

A kind of automobile three-way catalysts Download PDF

Info

Publication number
CN107524504A
CN107524504A CN201710943954.XA CN201710943954A CN107524504A CN 107524504 A CN107524504 A CN 107524504A CN 201710943954 A CN201710943954 A CN 201710943954A CN 107524504 A CN107524504 A CN 107524504A
Authority
CN
China
Prior art keywords
carrier
automobile
way catalysts
housing
air
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.)
Withdrawn
Application number
CN201710943954.XA
Other languages
Chinese (zh)
Inventor
黄欣
黄旬
陆松
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.)
Liuzhou Yaxiang Technology Co Ltd
Original Assignee
Liuzhou Yaxiang Technology 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 Liuzhou Yaxiang Technology Co Ltd filed Critical Liuzhou Yaxiang Technology Co Ltd
Priority to CN201710943954.XA priority Critical patent/CN107524504A/en
Publication of CN107524504A publication Critical patent/CN107524504A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2053—By-passing catalytic reactors, e.g. to prevent overheating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2825—Ceramics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/06—Ceramic, e.g. monoliths
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2510/00—Surface coverings
    • F01N2510/02—Surface coverings for thermal insulation
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Catalysts (AREA)

Abstract

The invention discloses a kind of automobile three-way catalysts, the automobile three-way catalysts are provided with two carriers, and carrier one and carrier two are hollow-core construction, and filled with what platinum, rhodium, palladium metal silk catalyst of aluminum oxide ceramic, carrier one and the inwall of carrier two are equipped with by-pass prot, the catalytic efficiency of unit area is not only increased, and improves the uniformity of air-flow, favourable effect is also played to reducing flow resistance；And when carrier blocks, most of air-flow then drains into air by by-pass prot, so as to reduce the infringement that back pressure increase comes to automobile belt.

Description

A kind of automobile three-way catalysts
Technical field
The present invention relates to a kind of automobile exhaust system purifier, more particularly to a kind of automobile three-way catalysts.
Background technology
As automobile quantity is more and more, its harm to global environment is also increasing, and automobile exhaust pollution has been at present Through one of main pollution sources as China's air.In China, automobile emission regulation perfects not as European and American developed countries, and Vehicle condition is poor, the blowdown flow rate of more American-European car at the same level be higher by one times it is even more more.In big city, vehicle is various, traffic congestion, vapour Car is regular to there is situations such as idling, frequently brake, and exacerbates the pollution of vehicle exhaust, so control tail gas blowdown is very It is necessary.
Automobile three-way catalytic apparatus is mounted in most important outer purifier in automobile exhaust system, and it arranges automobile Pernicious gas CO, HC and NOx of releasing are changed into nontoxic carbon dioxide, water and nitrogen by oxidation and reduction. Control of its appearance to auto-pollution serves obvious action, is that auto-pollution post-processes very effective measure.Tradition The catalytic way of ternary catalyzing unit is axial catalysis, and axially catalysis is confined to the position of cavity volume internal diameter size, carrier, and air-flow is often The center of carrier axial direction is concentrated on, the pressure loss is larger, and carrier center flow velocity is uneven, and tradition three after long-term use The carrier of first catalyst converter can be blocked by some pollution particles, once catalyst converter carrier blocks, can cause to be vented not smooth, back pressure liter Height, Tail Pipe Temperature steeply rise.So on the premise of automobile other performances are not influenceed, reduce the pressure of tail gas discharge system Loss is the direction that current scholars study.
The content of the invention
To solve the above problems, the invention provides a kind of automobile three-way catalysts, the automobile three-way catalysts are provided with two Individual carrier, and carrier one and carrier two are hollow-core construction, and urged filled with aluminum oxide ceramic what platinum, rhodium, palladium metal silk Agent, carrier one and the inwall of carrier two are equipped with by-pass prot, not only increase the catalytic efficiency of unit area, and improve gas The uniformity of stream, favourable effect is also played to reducing flow resistance；And when carrier blocks, most of air-flow then passes through side Through hole drains into air, so as to reduce the infringement that back pressure increase comes to automobile belt.
The technical solution adopted for the present invention to solve the technical problems is：A kind of automobile three-way catalysts, including housing, subtract Sealing gasket, carrier, catalyst converter are shaken, heat shield is housed outside housing, damping sealing pad is additionally provided between housing and carrier, housing enters Gas end is connected by air inlet Taper Pipe with air inlet pipe, and housing outlet side is bored by escape pipe and connected with escape pipe, and carrier includes carrier One and carrier two, carrier one and carrier two are hollow-core construction, and are fixed on housing cavity；Carrier one is cylindrical structure, carrier Space between one cylinder outer wall and cylinder inner wall is filled with aluminum oxide ceramic particle and platinum, rhodium, palladium metal silk catalyst； Carrier two is hollow S tubular constructions, and the broken ceramics of alundum (Al2O3) is filled with hollow S pipes, be coated with broken ceramics platinum, rhodium, Palladium metal catalyst coating；Deflector is fixed in housing, and deflector one end is connected with air inlet Taper Pipe, the deflector other end then with Mozzle connects, and mozzle connects with carrier, and air-flow enters in carrier one and carrier two from mozzle, with lining on the inside of mozzle Pad.
Further, by-pass prot is opened up on the circle tube inner wall of carrier one and in the hollow S pipe outer walls of carrier two, subtracted Few carrier blocks, even if when the sky that carrier blocks, and most of air-flow then enters between carrier one and carrier two through by-pass prot Gap, bored by escape pipe from escape pipe and drain into air, so as to reduce the infringement that back pressure increase comes to automobile belt.
Further, the deflector is bell-mouth structure of air；When air-flow passes through air inlet tubular expansion cone angle, a fluid stream and expansion The whirlpool amount that angle is formed is less, when flowing to deflector with air-flow of these whirlpools, and the whirlpool formed with a fluid stream and deflector offsets Disappear, so as to improve the uniformity of air-flow.
Further, the inwall of the carrier one and carrier two scribbles loose porous coating, and coated porous structure increases The roughness of the inner wall surface of big carrier one and carrier two, increases catalytic reaction area, improves the catalysis energy of catalyst converter Power, adapt to the various operating modes of motor vehicle exhaust emission；And coating surface can store up oxygen covered with platinum, rhodium, palladium precious metal catalyst layer, And can auxiliary major catalyst is reacted completely.
Further, heat shield is housed outside housing, damage caused by preventing high temperature to external radiation and external impact or dabbling It is bad.
Further, damping sealing pad is additionally provided between housing and carrier, plays damping, relief of thermal stress, insulation and sealing Effect.
Further, homogenizing plate is provided with the gap between the inwall of the carrier one and the outer wall of carrier two.
Further, the homogenizing plate is made by stainless (steel) wire.
Further, the homogenizing plate is made by the stainless steel plate for being drilled with circular or polygonal through hole.
Beneficial effects of the present invention：1）Compared with conventional catalyst device, automobile three-way catalysts of the invention are provided with two loads Body, and carrier one and carrier two are hollow-core construction, and aluminum oxide ceramic and platinum, rhodium, palladium metal silk catalyst are filled with, Carrier one is in cylindrical structure, and the catalytic way of carrier one is radially to be catalyzed；When being radially catalyzed, unit air-flow passes through the effective of carrier Area substantially increases, and not only increases the catalytic efficiency of unit area, and improves the uniformity of air-flow, to reducing flow resistance Serve favourable effect；Carrier two is hollow S tubular constructions, and air-flow is longer by the S pipe internal channel distances of carrier two, and air-flow leads to The effective area increase of carrier two is crossed, catalysis area is increased, improves catalytic efficiency.2）Because carrier one is columnar structured, gas Radially flow resistance is smaller for stream, and carrier two is hollow S tubular constructions, and the S-shaped flow resistance of air-flow is larger, is carried to reduce Resistance difference in body one and carrier two, so built-in be filled with of carrier one is loaded for aluminum oxide ceramic particle, carrier two The broken ceramics of alundum (Al2O3), the aluminum oxide ceramic particle in carrier one is than the broken ceramics filling of alundum (Al2O3) in carrier two Must be more fine and close, so that it is guaranteed that carrier one is suitable with the drag size that the air-flow in carrier two is subject to, it is ensured that carrier one and carrier Equal air-flow is uniform and stable in two passes through.3）Carrier one and the inwall of carrier two are equipped with by-pass prot, are also played to reducing flow resistance Favourable effect, and when carrier blocks, most of air-flow then drains into air by by-pass prot, increases so as to reduce back pressure The infringement come to automobile belt greatly.4）Deflector is bell-mouth structure of air, when air-flow passes through the angle of flare, the whirlpool of a fluid stream and angle of flare formation Vorticity is less, when flowing to deflector with air-flow of these whirlpools, and the whirlpool formed with a fluid stream and deflector offsets, so as to improve The uniformity of air-flow.
Brief description of the drawings
Fig. 1 is a kind of structural representation of automobile three-way catalysts of the present invention.
In figure, 1, air inlet pipe；2nd, housing；3rd, air inlet Taper Pipe；4th, deflector；5th, mozzle；61st, carrier one；62nd, carrier Two, 7, pad；8th, escape pipe is bored；9th, escape pipe；10th, damping sealing pad；11st, coating；12nd, Catalytic Layer；13rd, homogenizing plate, 14, other Through hole.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 is refer to, this specific embodiment provides a kind of automobile three-way catalysts, including housing, damping sealing pad, load Body, catalyst converter, housing outside are equipped with heat shield, damping sealing pad are additionally provided between housing and carrier, housing inlet end is by entering Gas coning pipe is connected with air inlet pipe, and housing outlet side is bored by escape pipe and connected with escape pipe, and carrier includes carrier one and carrier two, Carrier one and carrier two are hollow-core construction, and are fixed on housing cavity；Carrier one is cylindrical structure, the cylinder outer wall of carrier one with Space between cylinder inner wall is filled with aluminum oxide ceramic particle and platinum, rhodium, palladium metal silk catalyst；Carrier two is hollow S tubular constructions, hollow S pipe in be filled with the broken ceramics of alundum (Al2O3), be coated with platinum, rhodium, palladium metal catalyst on broken ceramics Coating；Deflector is fixed in housing, and deflector one end is connected with air inlet Taper Pipe, and the deflector other end is then connected with mozzle, Mozzle connects with carrier, and air-flow enters in carrier one and carrier two from mozzle, with pad on the inside of mozzle.
In one more preferably embodiment, opened on the circle tube inner wall of carrier one and in the hollow S pipe outer walls of carrier two If by-pass prot, reduce carrier and block, even if when carrier blocks, most of air-flow then enters carrier one and carrier through by-pass prot Space between two, bored by escape pipe from escape pipe and drain into air, so as to reduce the infringement that back pressure increase comes to automobile belt.
In one more preferably embodiment, the deflector is bell-mouth structure of air；When air-flow passes through air inlet tubular expansion cone angle, The whirlpool amount that a fluid stream and the angle of flare are formed is less, when flowing to deflector with air-flow of these whirlpools, is formed with a fluid stream and deflector Whirlpool offset, so as to improve the uniformity of air-flow.
In one more preferably embodiment, the inwall of the carrier one and carrier two scribbles loose porous coating, coating Loose structure increases the roughness of the inner wall surface of carrier one and carrier two, increases catalytic reaction area, improves catalysis The catalytic capability of device, adapt to the various operating modes of motor vehicle exhaust emission；And coating surface is covered with platinum, rhodium, palladium precious metal catalyst layer, Oxygen can be stored up, and can auxiliary major catalyst is reacted completely.
In one more preferably embodiment, heat shield is housed outside housing, prevents high temperature to external radiation and external impact or splashes Damage caused by water.
Damping sealing pad is additionally provided with one more preferably embodiment, between housing and carrier, a damping, relief of thermal stress, Insulation and the effect of sealing.
It is provided with one more preferably embodiment, in the gap between the inwall of the carrier one and the outer wall of carrier two and flows Plate.
In one more preferably embodiment, the homogenizing plate is made by stainless (steel) wire.
In one more preferably embodiment, the homogenizing plate made by the stainless steel plate for being drilled with circular or polygonal through hole and Into.
Exemplary description is carried out to the present invention above in conjunction with accompanying drawing, it is clear that realization of the invention is not by aforesaid way Limitation, as long as employ technical solution of the present invention progress various improvement, or it is not improved say the present invention design and technology Scheme is applied to other occasions, within the scope of the present invention.

Claims (9)

1. a kind of automobile three-way catalysts, including housing, damping sealing pad, carrier, catalyst converter, it is characterised in that housing air inlet End is connected by air inlet Taper Pipe with air inlet pipe, and housing outlet side is bored by escape pipe and connected with escape pipe, and carrier includes carrier one With carrier two, carrier one and carrier two are hollow-core construction, and are fixed on housing cavity, and carrier one is cylindrical structure, carrier one Cylinder outer wall and cylinder inner wall between space be filled with aluminum oxide ceramic particle and platinum, rhodium, palladium metal silk catalyst； Carrier two is hollow S tubular constructions, and the broken ceramics of alundum (Al2O3) is filled with hollow S pipes, be coated with broken ceramics platinum, rhodium, Palladium metal catalyst；Deflector is fixed in housing, and deflector one end is connected with air inlet Taper Pipe, the deflector other end then with water conservancy diversion Pipe connects, and mozzle connects with carrier, and air-flow enters in carrier one and carrier two from mozzle.
A kind of 2. automobile three-way catalysts according to claim 1, it is characterised in that：On the circle tube inner wall of carrier one and By-pass prot is opened up in the hollow S pipe outer walls of carrier two.
A kind of 3. automobile three-way catalysts according to claim 1, it is characterised in that：The deflector is horn mouth knot Structure.
A kind of 4. automobile three-way catalysts according to claim 1, it is characterised in that：The carrier one and carrier two it is interior Wall scribbles loose porous coating, and coating surface is covered with platinum, rhodium, palladium precious metal catalyst layer.
A kind of 5. automobile three-way catalysts according to claim 1, it is characterised in that：Heat shield is housed outside housing.
A kind of 6. automobile three-way catalysts according to claim 1, it is characterised in that：It is additionally provided with and subtracts between housing and carrier Shake sealing gasket.
A kind of 7. automobile three-way catalysts according to claim 1, it is characterised in that：The inwall and carrier of the carrier one Homogenizing plate is provided with gap between two outer wall.
A kind of 8. automobile three-way catalysts according to claim 7, it is characterised in that：The homogenizing plate is by stainless (steel) wire system Form.
A kind of 9. automobile three-way catalysts according to claim 7, it is characterised in that：The homogenizing plate by be drilled with it is circular or The stainless steel plate of polygonal through hole is made.
CN201710943954.XA 2017-10-12 2017-10-12 A kind of automobile three-way catalysts Withdrawn CN107524504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710943954.XA CN107524504A (en) 2017-10-12 2017-10-12 A kind of automobile three-way catalysts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710943954.XA CN107524504A (en) 2017-10-12 2017-10-12 A kind of automobile three-way catalysts

Publications (1)

Publication Number Publication Date
CN107524504A true CN107524504A (en) 2017-12-29

Family

ID=60684958

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710943954.XA Withdrawn CN107524504A (en) 2017-10-12 2017-10-12 A kind of automobile three-way catalysts

Country Status (1)

Country Link
CN (1) CN107524504A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109613170A (en) * 2018-12-29 2019-04-12 浙江浙能兰溪发电有限责任公司 A kind of denitrating catalyst performance monitoring device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109613170A (en) * 2018-12-29 2019-04-12 浙江浙能兰溪发电有限责任公司 A kind of denitrating catalyst performance monitoring device

Similar Documents

Publication Publication Date Title
JP4027338B2 (en) Exhaust gas aftertreatment device / silencer combination in exhaust gas system of internal combustion engine
CN207278335U (en) A kind of automobile three-way catalysts
CN107524504A (en) A kind of automobile three-way catalysts
CN107178403A (en) A kind of automobile exhaust pipe purifying muffler
CN106337714B (en) Nozzle integrated form SCR catalytic muffler
CN107448268A (en) A kind of complex carries automobile three-way catalysts
CN207278333U (en) A kind of complex carries automobile three-way catalysts
CN207892686U (en) A kind of automobile three-way catalysts
CN207278334U (en) A kind of S types automobile three-way catalysts
CN106285862A (en) A kind of automobile water conservancy diversion catalytic converter
CN206035592U (en) Novel car three way catalyst converter
CN107503830A (en) A kind of S types automobile three-way catalysts
CN107605578A (en) A kind of automobile three-way catalysts
CN212898662U (en) Square box type natural gas engine post-processing device
CN213063723U (en) Marine engine tail gas mixer device
CN203148036U (en) Air heating furnace waste gas outlet silencer
CN106621805A (en) Workshop waste gas catalytic purification mechanism
JP2013087745A (en) Reducing agent supply device and exhaust gas purifying apparatus including the same
CN106121789A (en) A kind of vehicle catalytic converter structure
CN201116724Y (en) Short inner pipe large through hole type heating furnace steam drum silencer
CN207271016U (en) A kind of tubular porous solution-air membrane contactor
CN213175785U (en) Nozzle erects type baffle whirl integral type mixing arrangement
CN207454090U (en) A kind of new-energy automobile muffler
CN203532006U (en) Silencer of diesel engine
CN219197441U (en) Packaging structure of automobile three-way catalyst

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20171229