CN212079436U - Automobile three-way catalyst - Google Patents
Automobile three-way catalyst Download PDFInfo
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- CN212079436U CN212079436U CN202020565035.0U CN202020565035U CN212079436U CN 212079436 U CN212079436 U CN 212079436U CN 202020565035 U CN202020565035 U CN 202020565035U CN 212079436 U CN212079436 U CN 212079436U
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- way catalyst
- cylinder
- air outlet
- air inlet
- automobile
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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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- 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
- Y02T10/40—Engine management systems
Abstract
The utility model discloses an automobile three-way catalyst, which relates to the technical field of automobile manufacturing and comprises a first cylinder body, wherein a three-way catalyst is arranged in the first cylinder body, a first liner is wrapped outside the three-way catalyst, an air inlet end cover is arranged at the air inlet end of the first cylinder body, and the air inlet end cover is connected with an air inlet flange through an air inlet pipe; the diameter phi of the three-way catalyst is 99.6 mm-phi 103.6mm, the height is 134 mm-138 mm, the air outlet end of the first cylinder is connected with the second cylinder through a connecting end cone, a particle catcher is arranged in the second cylinder, the outer side of the particle catcher is wrapped with a second liner, the air outlet end of the second cylinder is provided with an air outlet end cover, and the air outlet end cover is connected with an air outlet flange through an air outlet pipe. Compared with the prior art, the utility model discloses a three way catalyst's size improves, adopts particle trap to collect the particulate matter, has improved the purification treatment effect to gaseous pollutants in the automobile exhaust, makes automobile exhaust reach the requirement of six emission standard in state after handling.
Description
Technical Field
The utility model belongs to the technical field of the automobile manufacturing technique and specifically relates to an automobile three way catalyst converter.
Background
The three-way catalytic converter is installed outside the automobile exhaust system and can convert the harmful gas exhausted from automobile exhaust into harmless carbon dioxide, water and nitrogen gas through oxidation and reduction. The existing automobile three-way catalyst shown in fig. 1 comprises a cylinder 104, a cylindrical three-way catalyst 106 is arranged in the cylinder 104, the diameter of the three-way catalyst 106 is phi 116.4mm, the height of the three-way catalyst 106 is 136mm, a gasket 105 wraps the outer side of the three-way catalyst 106, an air inlet end cover 103 is arranged at an air inlet end of the cylinder 104, the air inlet end cover 103 is connected with an air inlet flange 101 through an air inlet pipe 102, and an air outlet end of the cylinder 104 is connected with an air outlet flange 108 through an air outlet end cover 107; the heat insulation cover 109 is welded on the outer sides of the cylinder 104, the air inlet end cover 103 and the air inlet pipe 102, and heat insulation cotton is arranged between the heat insulation cover 109 and the cylinder 104, between the air inlet end cover 103 and between the air inlet pipe 102. The automobile three-way catalyst can reach the emission standard of the fifth nation, the emission standard of the sixth nation to be implemented, namely GB18352.6-2016 emission limit of light automobile pollutants and the emission standard of the measuring method (sixth phase in China), is severer, and emission limits on the quality and quantity of the particles are increased. The existing automobile three-way catalyst cannot improve the purification treatment effect on gas pollutants in automobile exhaust, cannot collect particles, and cannot meet the requirements of national emission standards.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that a can improve the gas pollutant purification treatment effect to among the automobile exhaust, collect the particulate matter simultaneously, make automobile exhaust reach the automobile three way catalyst converter of six emission standard requirements in state after handling.
In order to solve the above problem, the utility model discloses a technical scheme is: the automobile three-way catalyst comprises a first cylinder, wherein a three-way catalyst is arranged in the first cylinder, a first liner is wrapped on the outer side of the three-way catalyst, and an air inlet end cover is arranged at the air inlet end of the first cylinder and is connected with an air inlet flange through an air inlet pipe; the diameter of the three-way catalyst is phi 99.6 mm-phi 103.6mm, the height of the three-way catalyst is 134 mm-138 mm, the air outlet end of the first cylinder is connected with the second cylinder through a connecting end cone, the second cylinder is internally provided with a particle trap, the outer side of the particle trap is wrapped with a second liner, the air outlet end of the second cylinder is provided with an air outlet end cover, and the air outlet end cover is connected with an air outlet flange through an air outlet pipe.
In the technical scheme of the automobile three-way catalyst, a more specific technical scheme can be that: an air inlet pressure detecting pipe and a rear oxygen sensor are arranged on the connecting end cone, the air inlet pressure detecting pipe is used for being connected with the pressure sensor for detecting the pressure of the air inlet end of the particle catcher, and the rear oxygen sensor is used for detecting the oxygen content of the catalyzed exhaust gas; and the air outlet end cover is provided with an air outlet pressure detection tube which is used for connecting and detecting a pressure sensor of the air outlet end pressure of the particle trap.
Furthermore, a front exhaust temperature sensor for detecting the inlet temperature of the particle trap is arranged on the connecting end cone, and a rear exhaust temperature sensor for detecting the outlet temperature of the particle trap is arranged on the outlet pipe.
Furthermore, the intake pipe first barrel the connecting end awl the second barrel is equipped with thermal-insulated cover support, there is thermal-insulated cover through bolted connection thermal-insulated cover the thermal-insulated cover support, thermal-insulated cover is located the intake pipe first barrel the connecting end awl the outside of second barrel, thermal-insulated cotton is equipped with to the inboard of thermal-insulated cover.
Furthermore, the first cylinder and the second cylinder are provided with mounting brackets.
Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has:
1. the utility model discloses be equipped with three way catalyst in first barrel, the end of giving vent to anger of first barrel passes through the connecting end awl and is connected with the second barrel, is equipped with particle catcher in the second barrel, and through three way catalyst's size improvement, adopt particle catcher to collect the particulate matter, has improved the purification treatment effect to gaseous pollutants in the automobile exhaust, makes automobile exhaust reach the requirement of six emission standards in state after handling to can install smoothly in limited space.
2. An air inlet pressure detecting pipe is arranged on the connecting end cone and is used for being connected with a pressure sensor for detecting the pressure of the air inlet end of the particle catcher; an air outlet pressure detection tube is arranged on the air outlet end cover and is used for being connected with a pressure sensor for detecting the pressure of the air outlet end of the particle catcher. For example, when the automobile is started, the pressure difference between the front and the rear of the particle catcher is 10 kilopascals through detection of a pressure sensor, and after the automobile runs for a period of time, the pressure difference between the front and the rear of the particle catcher is 20 kilopascals; the increase of the pressure difference indicates that a certain amount of particulate matters are collected by the particle catcher, the particulate matters block the particle catcher, and further the pressure difference before and after the particle catcher is influenced, and the magnitude of the pressure difference is related to the amount of the collected particulate matters.
3. A rear oxygen sensor for detecting the oxygen concentration of the waste gas is arranged on the connecting end cone; the purification effect of the three-way catalyst on CO, HC and NOx is related to the air-fuel ratio, the exhaust gas reaches a connecting end cone region after being catalyzed by the catalyst, the oxygen concentration of the catalyzed exhaust gas is detected by a rear oxygen sensor, and when the oxygen concentration is insufficient or out of tolerance, an oil sprayer in an engine stops or increases oil injection to keep the air-fuel ratio in the mixed gas and control the good catalysis effect.
4. The connecting end cone is provided with a front exhaust temperature sensor for detecting the inlet temperature of the particle catcher, and the outlet pipe is provided with a rear exhaust temperature sensor for detecting the outlet temperature of the particle catcher. Detecting the temperature of the air inlet end of the particle catcher through a front exhaust temperature sensor, stopping oil injection of an oil injector in the engine when the temperature reaches a preset value, and supplying oxygen to fully combust particles; the rear exhaust temperature sensor detects the temperature of the air outlet end of the particle trap, and the temperature rises when the particles are combusted so as to be captured by the rear exhaust temperature sensor to prove that the particles are combusted.
5. The heat shield connected with the heat shield support through the bolt is arranged on the outer sides of the air inlet pipe, the first barrel, the connecting end cone and the second barrel, and the risk that the heat shield falls off due to failure of welding points of the heat shield is reduced.
6. Be equipped with the installing support on first barrel and second barrel, the utility model discloses an installing support is connected with the engine, has promoted holistic thermal mechanical property.
Drawings
Fig. 1 is a schematic structural view of a conventional three-way catalyst for an automobile.
Fig. 2 is a schematic structural diagram of an embodiment of the present invention.
Fig. 3 is a right side view of an embodiment of the present invention.
Detailed Description
The invention will be described in more detail with reference to the following embodiments:
example 1
As shown in fig. 2 and 3, the three-way catalyst for automobiles comprises a first cylinder 5, a cylindrical three-way catalyst 7 is arranged in the first cylinder 5, the diameter of the three-way catalyst 7 is phi 99.6mm, the height of the three-way catalyst 7 is 134mm, a first gasket 6 wraps the outer side of the three-way catalyst 7, an air inlet end cover 4 is arranged at an air inlet end of the first cylinder 5, the air inlet end cover 4 is connected with an air inlet flange 1 through an air inlet pipe 3, and the air inlet flange 1 is connected with an exhaust manifold of an engine through bolts. The air outlet end of the first cylinder 5 is welded with the second cylinder 9 through a connecting end cone 8, a cylindrical particle trap 11 is arranged in the second cylinder 9, a second liner 10 wraps the outer side of the particle trap 11, an air outlet end cover 12 is arranged at the air outlet end of the second cylinder 9, the air outlet end cover 12 is connected with an air outlet flange 14 through an air outlet pipe 13, and the air outlet flange 14 is connected with a silencer through bolts. And a mounting bracket 16 connected with the engine is arranged on the first cylinder 5 and the second cylinder 9. The heat shield support 2 is arranged on the air inlet pipe 3, the first barrel 5, the connecting end cone 8 and the second barrel 9, the heat shield support 2 is connected with a heat shield 15 through bolts, the heat shield 15 is located on the outer side of the air inlet pipe 3, the first barrel 5, the connecting end cone 8 and the second barrel 9, and heat insulation cotton is arranged on the inner side of the heat shield 15.
An air inlet pressure detecting pipe 18 is arranged on the connecting end cone 8, and the air inlet pressure detecting pipe 18 is used for being connected with a pressure sensor for detecting the pressure of the air inlet end of the particle catcher 11; an air outlet pressure detection tube 17 is mounted on the air outlet end cover 12, and the air outlet pressure detection tube 17 is used for being connected with a pressure sensor for detecting the pressure of the air outlet end of the particle catcher 11. The connecting end cone 8 is provided with a rear oxygen sensor 21 for detecting the oxygen concentration of the exhaust gas. The connecting end cone 8 is provided with a front exhaust temperature sensor 19 for detecting the inlet temperature of the particle catcher 11, and the outlet pipe 13 is provided with a rear exhaust temperature sensor 20 for detecting the outlet temperature of the particle catcher 11.
The utility model discloses three way catalyst 7 is equipped with in first barrel 5, the end of giving vent to anger of first barrel 5 is connected with second barrel 9 through connecting end awl 8, particle catcher 11 is equipped with in the second barrel 9, size through three way catalyst 7 improves, adopt particle catcher 11 to collect the particulate matter, improved the purification treatment effect to gaseous pollutants in the automobile exhaust, make automobile exhaust reach the requirement of six emission standards of state after handling, and can install smoothly in limited space.
Example 2
The present embodiment is different from embodiment 1 in that: the diameter of the three-way catalyst 7 was Φ 103.6mm, and the height was 138 mm. The remaining features are the same as in example 1.
Claims (9)
1. The automobile three-way catalyst comprises a first barrel (5), wherein a three-way catalyst (7) is arranged in the first barrel (5), a first liner (6) wraps the outer side of the three-way catalyst (7), an air inlet end cover (4) is arranged at the air inlet end of the first barrel (5), and the air inlet end cover (4) is connected with an air inlet flange (1) through an air inlet pipe (3); the method is characterized in that: the diameter of the three-way catalyst (7) is phi 99.6 mm-phi 103.6mm, the height is 134 mm-138 mm, the air outlet end of the first cylinder (5) is connected with the second cylinder (9) through a connecting end cone (8), a particle trap (11) is arranged in the second cylinder (9), the outer side of the particle trap (11) is wrapped with a second liner (10), the air outlet end of the second cylinder (9) is provided with an air outlet end cover (12), and the air outlet end cover (12) is connected with an air outlet flange (14) through an air outlet pipe (13).
2. The automobile three-way catalyst according to claim 1, characterized in that: an air inlet pressure detection pipe (18) and a rear oxygen sensor (21) are arranged on the connecting end cone (8), the air inlet pressure detection pipe (18) is used for being connected with the pressure sensor for detecting the pressure of the air inlet end of the particle catcher (11), and the rear oxygen sensor (21) is used for detecting the oxygen content of the exhaust gas after catalysis; an air outlet pressure detection pipe (17) is arranged on the air outlet end cover (12), and the air outlet pressure detection pipe (17) is used for connecting and detecting a pressure sensor of the air outlet end pressure of the particle catcher (11).
3. The automobile three-way catalyst according to claim 1 or 2, characterized in that: the connecting end cone (8) is provided with a front exhaust temperature sensor (19) for detecting the inlet temperature of the particle catcher (11), and the outlet pipe (13) is provided with a rear exhaust temperature sensor (20) for detecting the outlet temperature of the particle catcher (11).
4. The automobile three-way catalyst according to claim 1 or 2, characterized in that: intake pipe (3) first barrel (5) connection end awl (8) be equipped with thermal-insulated cover support (2) on second barrel (9), there is thermal-insulated cover (15) thermal-insulated cover support (2) through bolted connection, thermal-insulated cover (15) are located intake pipe (3) first barrel (5) connection end awl (8) the outside of second barrel (9), thermal-insulated cotton is equipped with to the inboard of thermal-insulated cover (15).
5. The automobile three-way catalyst according to claim 3, characterized in that: intake pipe (3) first barrel (5) connection end awl (8) be equipped with thermal-insulated cover support (2) on second barrel (9), there is thermal-insulated cover (15) thermal-insulated cover support (2) through bolted connection, thermal-insulated cover (15) are located intake pipe (3) first barrel (5) connection end awl (8) the outside of second barrel (9), thermal-insulated cotton is equipped with to the inboard of thermal-insulated cover (15).
6. The automobile three-way catalyst according to claim 1 or 2, characterized in that: and the first cylinder (5) and the second cylinder (9) are provided with mounting brackets (16).
7. The automobile three-way catalyst according to claim 3, characterized in that: and the first cylinder (5) and the second cylinder (9) are provided with mounting brackets (16).
8. The automobile three-way catalyst according to claim 4, characterized in that: and the first cylinder (5) and the second cylinder (9) are provided with mounting brackets (16).
9. The automobile three-way catalyst according to claim 5, characterized in that: and the first cylinder (5) and the second cylinder (9) are provided with mounting brackets (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020565035.0U CN212079436U (en) | 2020-04-16 | 2020-04-16 | Automobile three-way catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020565035.0U CN212079436U (en) | 2020-04-16 | 2020-04-16 | Automobile three-way catalyst |
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| CN212079436U true CN212079436U (en) | 2020-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020565035.0U Active CN212079436U (en) | 2020-04-16 | 2020-04-16 | Automobile three-way catalyst |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447189A (en) * | 2021-06-18 | 2021-09-28 | 中自环保科技股份有限公司 | Automobile exhaust aftertreatment catalytic unit backpressure testing device and testing method |
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2020
- 2020-04-16 CN CN202020565035.0U patent/CN212079436U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447189A (en) * | 2021-06-18 | 2021-09-28 | 中自环保科技股份有限公司 | Automobile exhaust aftertreatment catalytic unit backpressure testing device and testing method |
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