CN206513421U - A kind of discharge post-treatment system applied to petrol engine - Google Patents
A kind of discharge post-treatment system applied to petrol engine Download PDFInfo
- Publication number
- CN206513421U CN206513421U CN201720002683.3U CN201720002683U CN206513421U CN 206513421 U CN206513421 U CN 206513421U CN 201720002683 U CN201720002683 U CN 201720002683U CN 206513421 U CN206513421 U CN 206513421U
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- China
- Prior art keywords
- ternary catalyzing
- treatment system
- grain catcher
- unit
- electric heater
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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
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- Exhaust Gas After Treatment (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
The utility model discloses a kind of discharge post-treatment system and method applied to petrol engine, it is related to vent gas treatment field.This discharge post-treatment system includes ternary catalyzing unit, grain catcher, electric heater unit and control module.Carrier is metallic carrier in ternary catalyzing unit, is arranged at exhaust manifold rear in engine cabin.Grain catcher is installed on the port of export of ternary catalyzing unit.The filter core of grain catcher is made up of ceramics, and ceramic surface is coated with noble metal catalyst.Electric heater unit, which is fixed on ternary catalyzing unit outer surface, to be used to give ternary catalyzing unit heating.Control module is connected with electrical heating module, for controlling electric heater unit.The utility model additionally provides corresponding method.Using the discharge post-treatment system of petrol engine of the present utility model, by the reasonable control of the reasonable Arrangement and electric heater unit of ternary catalyzing unit and grain catcher, so as to lift the disposal ability of discharge post-treatment system, reduction discharges pollutants.
Description
Technical field
The utility model is related to vent gas treatment field, more particularly to a kind of emission aftertreatment applied to petrol engine
System.
Background technology
In order to tackle the environmental pollution being on the rise, China will put into effect the automobile emission regulation of state six.The regulation relative to
The current standard of state five, no matter in operating condition of test or on every emission limit value, there is the raising of great-jump-forward.To gasoline
Machine is more the increase in the requirement of particulate matter.And for petrol engine particularly directly jetting gasoline engine, never consider before
Particulate matter will turn into the ultimate challenge that vehicle meets Abgasgesetz.In order to meet Abgasgesetz particulate matter and other pollutants
The requirement of limit value, it is necessary to apply new emission aftertreatment technology.
Utility model content
The purpose of this utility model is that offer is a kind of and disclosure satisfy that Abgasgesetz particulate matter and the limit value of other pollutants
Requirement be applied to petrol engine discharge post-treatment system.
Especially, the purpose of this utility model is to provide a kind of discharge post-treatment system applied to petrol engine,
To lift the disposal ability of discharge post-treatment system, reduction discharges pollutants, and it includes：
Ternary catalyzing unit, is installed on exhaust manifold rear in engine cabin, for harmful gas in purifying vehicle tail gas
Carrier in body, the ternary catalyzing unit is metallic carrier；
Grain catcher, is installed on the port of export of the ternary catalyzing unit, for converting the remaining pernicious gas and catching
The particulate matter in the Vehicular exhaust is caught, the filter core of the grain catcher is made up of ceramics, and the cartridge surface is coated with expensive
Metallic catalyst；
Electric heater unit, is installed at the ternary catalyzing unit, for giving ternary catalyzing unit heating, improves the vapour
The temperature of tail gas；With
Control module, is connected with the electric heater unit, for controlling the electric heater unit.
Further, the entrance point of the port of export of the ternary catalyzing unit and the grain catcher is by possessing pre- fixed length
The blast pipe connection of degree；
Alternatively, the predetermined length is 0m~1m.
Further, the metallic carrier is Aludirome.
Further, the noble metal catalyst is platinum, palladium or rhodium catalyst one kind therein.
Further, the control module includes：
The control module includes：
Temperature sensor, is fixed in the grain catcher, for measuring vehicle tail described in the grain catcher
The temperature of gas；
Differential pressure pickup, is fixed on around the grain catcher, for measuring the car before and after the grain catcher
The pressure difference of tail gas；With
Control unit, is connected with the temperature sensor and the differential pressure pickup, for by handling the institute collected
Temperature and the pressure difference is stated to control starting or stoping for the electric heater unit.
Carrier in discharge post-treatment system of the present utility model applied to petrol engine, wherein ternary catalyzing unit is
Aludirome is made, and the grain catcher for being coated with the noble metal catalysts such as platinum, palladium or rhodium with cartridge surface coordinates, can be faster
More efficient conversion waste gas.Further through the reasonable control of the reasonable Arrangement and electric heater unit of ternary catalyzing unit and grain catcher
System, so as to lift the disposal ability of discharge post-treatment system, reduction discharges pollutants.
Brief description of the drawings
It is described in detail by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter more of the present utility model specific real
Apply example.Identical reference denotes same or similar part or part in accompanying drawing.In accompanying drawing：
Fig. 1 is the illustrative arrangement figure of the discharge post-treatment system of the embodiment of the utility model one.
Fig. 2 is the workflow diagram of the emission aftertreatment method of the embodiment of the utility model one.
Embodiment
Fig. 1 is the illustrative arrangement figure of the discharge post-treatment system of the embodiment of the utility model one, as shown in figure 1, a kind of
Applied to the discharge post-treatment system of petrol engine, including ternary catalyzing unit 1, grain catcher 2, electric heater unit 3 and control
Molding block (is not drawn) in figure.Ternary catalyzing unit 1 is arranged at exhaust manifold rear in engine cabin, for vehicle exhaust to be arranged
The pernicious gases such as the carbon monoxide, hydrocarbon and the nitrogen oxides that go out are changed into harmless dioxy by oxidation and reduction
Change carbon, water and nitrogen.Carrier in the ternary catalyzing unit 1 is metallic carrier.Grain catcher 2 is installed on ternary catalyzing unit 1
The port of export, for convert the remaining pernicious gas and catch vehicle exhaust in particulate matter.The filter core of grain catcher 2 by
Ceramics composition, ceramic surface is coated with noble metal catalyst.Electric heater unit 3 is fixed on the outer surface of ternary catalyzing unit 1, for
Ternary catalyzing unit 1 is heated, and is improved the temperature of vehicle exhaust, had both been favorably improved the efficiency of ternary catalyzing unit 1, particle can be improved again
The temperature of trap 2, makes particulate matter burn, so as to reach that grain catcher 2 regenerates.Control module and electric heater unit 3
It is connected, controls electric heater unit 3.
When electric heater unit 3 works, increase the temperature of ternary catalyzing unit 1, improve the transformation efficiency of ternary catalyzing unit 1, together
The temperature of tail gas in Shi Tigao ternary catalyzing units 1, when high-temperature tail gas is by grain catcher 2, lifts the temperature of grain catcher 2
Degree, grain catcher 2 is reached after certain temperature, is regenerated after particulate matter active combustion, reduces pressure at expulsion.
Using the discharge post-treatment system of the present utility model applied to petrol engine, wherein in ternary catalyzing unit 1
Carrier is metallic carrier, and the grain catcher 2 for being coated with noble metal catalyst with cartridge surface coordinates, can be faster more efficient turn
Change waste gas.Further through the reasonable control of the reasonable Arrangement and electric heater unit 3 of ternary catalyzing unit 1 and grain catcher 2, so that
The disposal ability of discharge post-treatment system is lifted, reduction discharges pollutants.
Metallic carrier in ternary catalyzing unit 1 is made up of Aludirome, can strengthen tri- kinds of gases of CO, HC and NOx
Activity, promotes it to carry out certain oxidationreduction chemical reaction, and wherein CO is oxidized into colourless, nontoxic dioxy at high temperature
Change carbon gas；HC compounds are oxidized to water and carbon dioxide at high temperature；NOx is reduced into nitrogen and oxygen.Three kinds of pernicious gases
Become innocuous gas, vehicle exhaust is purified.
The port of export of ternary catalyzing unit 1 is connected with the entrance point of grain catcher 2 by possessing the blast pipe of predetermined length,
The predetermined length can be 0m~1m.Because when grain catcher 2 is apart from 1 certain distance of ternary catalyzing unit, into particle
The vehicle exhaust temperature of trap 2 is relatively low, is more beneficial for stratum granulosum and is formed；And enter the tail gas flow velocity phase of grain catcher 2
To lower, because Blang is spread closely related with wall flow velocity degree, flow velocity is lower, and the particulate matter trapped in same time is more, institute
It is higher with the filter efficiency of grain catcher 2.
The noble metal catalyst element of the cartridge surface of grain catcher 2 coating is platinum, palladium or rhodium catalyst one kind therein
Or it is several.In an embodiment of the present utility model, the grain catcher 2 for being coated with noble metal catalyst is public by BASF share
(BASF) producer is taken charge of to provide, wherein, the mass ratio of palladium rhodium is 12 in noble metal catalyst composition:8.Using above-mentioned granule capturing
Device 2, both can not convert complete pernicious gas with catalyzed conversion ternary catalyzing unit 1, the ignition temperature of particle can be reduced again, from
And improve the efficiency of catalytic regeneration.
Control module includes temperature sensor, differential pressure pickup and control unit.Temperature sensor is fixed on granule capturing
In device 2, the temperature for measuring vehicle exhaust in grain catcher 2.Differential pressure pickup is fixed on around grain catcher 2, is used
The pressure difference of vehicle exhaust before and after measurement grain catcher 2.Control unit is connected with temperature sensor and differential pressure pickup, is used for
Electric heater unit 3 is controlled by handling the temperature information collected and differential pressure information.
Fig. 2 is the workflow diagram of the emission aftertreatment method of the embodiment of the utility model one, as shown in Fig. 2 a kind of should
For the processing method of gasoline engine emissions after-treatment system, including：
Determine particulate matter loading level in grain catcher 2；
When particulate matter loading level is higher than predetermined value, electric heater unit 3 is opened；Or
When the vehicle exhaust in grain catcher 2 reaches regeneration temperature, regeneration temperature is maintained；Or
When the particulate matter loading level is less than predetermined value, the electric heater unit 3 is closed.
Further, particulate matter loading level is measured by differential pressure pickup pressure difference is determined.
The regeneration temperature is 550 DEG C~650 DEG C.
Exhaust back pressure refers to the resistance pressure of engine exhaust.When exhaust back pressure is raised, engine exhaust is not smooth, so that shadow
Ring the dynamic property of engine.Exhaust back pressure refers to the pressure drop that motor exhaust flows through gas extraction system.Exhaust back pressure is integrated to engine
Performance has very big influence.Generally, exhaust back pressure becomes the big engine fuel consumption rate that directly results in and risen, engine
Economic performance deteriorates, while engine power performance is also deteriorated, exhaust emissions quality is also due to the insufficient of in-cylinder combustion also adds
Play deteriorates.In the process of moving, differential pressure pickup monitors the pressure difference of vehicle exhaust before and after grain catcher 2 to automobile in real time, comes true
Determine whether exhaust back pressure impacts to automobile.When exhaust back pressure rise reaches certain value, control unit control electrical heating dress
3 startups are put, ternary catalyzing unit 1 is heated, exhaust temperature rise are now vented, when temperature is increased in grain catcher 2
Particle ignition temperature after, particulate matter burning, exhaust back pressure start reduction.Temperature value is sent to control by temperature sensor
Unit, control unit control electric heater unit 3 makes the temperature value in temperature sensor be maintained at a period of time, until exhaust back pressure
Change go to zero, control unit close electric heater unit 3.
So far, although those skilled in the art will appreciate that herein it is detailed have shown and described it is of the present utility model many
Individual exemplary embodiment, still, still can be public according to the utility model in the case where not departing from the utility model spirit and scope
The content opened directly determines or derived many other variations or modifications for meeting the utility model principle.Therefore, this practicality is new
The scope of type is understood that and regarded as to cover other all these variations or modifications.
Claims (6)
1. a kind of discharge post-treatment system applied to petrol engine, including：
Ternary catalyzing unit (1), is installed on the pernicious gas in exhaust manifold rear in engine cabin, purifying vehicle tail gas, institute
It is metallic carrier to state the carrier in ternary catalyzing unit (1)；
Grain catcher (2), is installed on the port of export of the ternary catalyzing unit (1), converts the remaining pernicious gas and seizure
Particulate matter in the Vehicular exhaust, the filter core of the grain catcher (2) is made up of ceramics, and the surface of the filter core is coated with
Noble metal catalyst；
Electric heater unit (3), is installed on the ternary catalyzing unit (1) place, gives the ternary catalyzing unit (1) heating, improves described
The temperature of Vehicular exhaust；With
Control module, is connected with the electric heater unit (3), controls the electric heater unit (3).
2. discharge post-treatment system according to claim 1, it is characterised in that the port of export of the ternary catalyzing unit (1)
It is connected with the entrance point of the grain catcher (2) by possessing the blast pipe of predetermined length.
3. discharge post-treatment system according to claim 2, it is characterised in that the predetermined length is 0m~1m.
4. discharge post-treatment system according to claim 1, it is characterised in that the metallic carrier is Aludirome.
5. discharge post-treatment system according to claim 1, it is characterised in that the noble metal catalyst be platinum, palladium or
Rhodium catalyst one kind therein.
6. discharge post-treatment system according to claim 1, it is characterised in that the control module includes：
Temperature sensor, is fixed in the grain catcher (2), measures Vehicular exhaust described in the grain catcher (2)
Temperature；
Differential pressure pickup, is fixed on before and after the grain catcher (2), measures the vehicle before and after the grain catcher (2)
The pressure difference of tail gas；With
Control unit, is connected with the temperature sensor and the differential pressure pickup, by handle the temperature that collects and
The pressure difference is to control starting or stoping for the electric heater unit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720002683.3U CN206513421U (en) | 2017-01-03 | 2017-01-03 | A kind of discharge post-treatment system applied to petrol engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720002683.3U CN206513421U (en) | 2017-01-03 | 2017-01-03 | A kind of discharge post-treatment system applied to petrol engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206513421U true CN206513421U (en) | 2017-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720002683.3U Active CN206513421U (en) | 2017-01-03 | 2017-01-03 | A kind of discharge post-treatment system applied to petrol engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762040A (en) * | 2017-01-03 | 2017-05-31 | 宁波吉利罗佑发动机零部件有限公司 | A kind of discharge post-treatment system and processing method for being applied to petrol engine |
| CN111622827A (en) * | 2020-06-05 | 2020-09-04 | 中国第一汽车股份有限公司 | Gasoline particle catcher regenerating unit and vehicle |
-
2017
- 2017-01-03 CN CN201720002683.3U patent/CN206513421U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762040A (en) * | 2017-01-03 | 2017-05-31 | 宁波吉利罗佑发动机零部件有限公司 | A kind of discharge post-treatment system and processing method for being applied to petrol engine |
| CN111622827A (en) * | 2020-06-05 | 2020-09-04 | 中国第一汽车股份有限公司 | Gasoline particle catcher regenerating unit and vehicle |
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