CN202348388U - Engine emission post-processing device - Google Patents
Engine emission post-processing device Download PDFInfo
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- CN202348388U CN202348388U CN2011203162438U CN201120316243U CN202348388U CN 202348388 U CN202348388 U CN 202348388U CN 2011203162438 U CN2011203162438 U CN 2011203162438U CN 201120316243 U CN201120316243 U CN 201120316243U CN 202348388 U CN202348388 U CN 202348388U
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- way valve
- engine emission
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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
- Y02T10/12—Improving ICE efficiencies
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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)
Abstract
The utility model discloses an engine emission post-processing device, which comprises an exhaust emission pipeline connected with an engine and an exhaust processing pipeline connected with the exhaust emission pipeline and further comprises a hydrocarbon gathering pipeline and a two-position three-way valve, wherein an inlet of the two-position three-way valve is connected with an outlet of the exhaust emission pipeline. The hydrocarbon gathering pipeline is provided with a hydrocarbon gathering device. The two-position three-way valve is provided with a first outlet and a second outlet, the first outlet is connected with the exhaust processing pipeline, the second outlet is connected with an inlet of the hydrocarbon gathering pipeline, and an outlet of the hydrocarbon gathering pipeline is connected with the exhaust processing pipeline. A rear portion pipeline of the exhaust processing pipeline is provided with an oxidation catalysis converter, an exhaust particle gathering device and an activated carbon fiber absorption device. Due to the arrangements, the engine emission post-processing device is capable of effectively solving the exhaust pollution problem caused by high frequency of startup and shutdown of the engine and the exhaust pollution problem caused at the start stage of the engine.
Description
Technical field
The utility model relates to the motor exhaust processing technology field, relates to a kind of engine emission after-treatment device more specifically.
Background technique
Along with China's constant development of economy, China's traffic and transport field has been obtained remarkable achievement.Yet along with the growth at full speed of various Motor Vehicle quantity, the motor car engine discharge tail gas has caused more serious pollution to environment.In recent years, China has released the laws and regulations of a series of relevant exhaust emissions, and the automotive emission amount has been made strict regulations.
In order to meet the regulation of China's Air Pollution Prevention Law, corresponding effort has been made in engine emission post-processing technology field by each engine production producer, below content will be that example describes in detail with a kind of mixed power (diesel oil one) motor.
The engine emission after-treatment device means to be installed in the engine exhaust system, can reduce the device of pollutant discharge amount in the exhaust through various physical and chemical effects.In the existing technology; The hybrid power engine combustion treatment device mainly comprises DOC (oxidation catalytic converter; Diesel oxidation catalyst), SCR (SCR; Selective catalytic reduction), DPF devices such as (exhaustion particulate collector, diesel particulate filter).Wherein, DOC (oxidation catalytic converter) when temperature reaches its initiation temperature, the effective HC (hydrocarbon) in the catalytic purification vehicle exhaust.SCR utilizes the catalyzed conversion effect of urea liquid to the NOx in the tail gas (oxynitrides), to reduce the content of NOx (oxynitrides) in the tail gas.
Yet in the existing technology, along with the variation of operating mode and battery SOC (state-of-charge, state of charge) value, hybrid electric vehicle engine and motor work are switched frequent, and motor start and stop frequency is high.Under these circumstances, motor self-temperature fall is little, and oily warm water temperature is normal basically.But exhaust gas post-treatment device temperature fall is big, often is lower than initiation temperature, and DOC, SCR that causes after-treatment device etc. loses catalysis, causes severe contamination.
In addition, in the engine cold-start stage, because the exhaust gas post-treatment device temperature does not reach the catalytic temperature of its DOC and SCR, after-treatment device is inoperative, and then causes more serious exhaust emission.
Therefore, how to solve the tail gas pollution problem that the tail gas pollution that causes because of motor start and stop frequency is high and engine start stage cause, become those skilled in the art's important technological problems to be solved.
The model utility content
For solving the problems of the technologies described above, the utility model provides a kind of engine emission after-treatment device, and it can effectively solve the tail gas pollution problem that the tail gas pollution problem that causes because of motor start and stop frequency is high and engine start stage cause.
The technological scheme that the utility model provides is described below:
The utility model provides a kind of engine emission after-treatment device; Comprise exhaust emissions pipeline that links to each other with motor and the vent gas treatment pipeline that is connected with said exhaust emissions pipeline; Also comprise the two position three-way valve that hydrocarbon capture pipeline and inlet are connected with the outlet of said exhaust emissions pipeline; Said hydrocarbon captures pipeline and is provided with the hydrocarbon catcher; Said two position three-way valve has first outlet and second outlet; Said first outlet is connected with said vent gas treatment pipeline, and said second outlet is connected with the inlet that said hydrocarbon captures pipeline, and the outlet of said hydrocarbon capture pipeline is connected in said vent gas treatment pipeline; Along the tail gas stream direction; The outlet that said vent gas treatment pipeline and said hydrocarbon capture pipeline is connected on the rear pipeline of position, is provided with oxidation catalytic converter, exhaustion particulate collector and with oxynitrides catalyzer and activated carbon fiber absorber with fire-resistant oxidation resistant performance.
Preferably, along the tail gas stream direction, said oxidation catalytic converter is positioned at the place ahead of said particle trapper.
Preferably; Said oxidation catalytic converter front side is provided with first temperature sensing device; Said two position three-way valve is specially the electromagnetism two position three-way valve; And said engine emission after-treatment device also comprises the control gear with signal input part and signal output part, and said first temperature sensing device is connected with the signal input part of said control gear, and said electromagnetism two position three-way valve is connected with the signal output part of said control gear.
Preferably, the rear side of said oxidation catalytic converter is provided with second temperature sensing device, and said second temperature sensing device is connected with the signal input part of said control gear.
Preferably, said control gear comprises the time delay module of the actuation time that is used to control said electromagnetism two position three-way valve.
Preferably, the Preset Time of said time delay module is 60 seconds.
The utility model provides a kind of engine emission after-treatment device; Comprise exhaust emissions pipeline and vent gas treatment pipeline; Wherein the exhaust emissions pipeline directly links to each other with motor, and the tail gas that motor is discharged at first gets among the exhaust emissions pipeline, and the vent gas treatment pipeline is connected in the exhaust emissions pipeline.The engine emission after-treatment device that the utility model provides; Also comprise the two position three-way valve that hydrocarbon capture pipeline and inlet are connected with the outlet of said exhaust emissions pipeline; Said hydrocarbon captures pipeline and is provided with the hydrocarbon catcher; Said two position three-way valve has first outlet and second outlet; Said first outlet is connected with said vent gas treatment pipeline, and said second outlet is connected with the inlet that said hydrocarbon captures pipeline, and the outlet of said hydrocarbon capture pipeline is connected in said vent gas treatment pipeline; Along the tail gas stream direction; The outlet that said vent gas treatment pipeline and said hydrocarbon capture pipeline is connected on the rear pipeline of position, is provided with oxidation catalytic converter, exhaustion particulate collector and with oxynitrides catalyzer and activated carbon fiber absorber with fire-resistant oxidation resistant performance.
Need to prove that the tail gas of engine emission mainly comprises hydrocarbon and oxynitrides, tail gas gets into the exhaust emissions pipeline after being discharged by motor.During engine start or motor start and stop frequency when higher; The temperature of engine emission after-treatment device is lower; At this moment, can make its first outlet be in cut-off state through the control two position three-way valve; And second outlet is on state, captures the pipeline vent gas treatment pipeline of being allowed for access afterwards so tail gas need pass through hydrocarbon.Because hydrocarbon captures pipeline and is provided with hydrocarbon catcher (HC catcher); Those skilled in the art it is understandable that; The HC catcher is suction, a desorption characteristics of utilizing zeolite molecular sieve, and when HC catcher temperature was no more than its desorption temperature, the HC catcher captured HC (hydrocarbon); And when temperature surpassed its desorption temperature, the HC catcher discharged HC.Therefore; So be provided with, when motor just starts or motor start and stop frequency when higher, the tail gas of engine emission gets into hydrocarbon and captures pipeline; HC (hydrocarbon) is captured by HC; Temperature until the engine emission after-treatment device raises, and when HC catcher temperature reached its desorption temperature, the HC that the HC catcher captures wanted with it to break away from.Need to prove that when the temperature of exhaust aftertreatment devices reached the desorption temperature of HC catcher, this temperature also can satisfy the initiation temperature of oxidation catalytic converter.HC gets into the vent gas treatment pipeline with tail gas stream and reacts with its oxidation catalytic converter (DOC) of going up setting, and those skilled in the art it is understandable that, oxidation catalytic converter (DOC) is the HC (hydrocarbon) in the catalytic purification motor exhaust effectively.After the temperature of treating exhaust aftertreatment devices reaches the initiation temperature of oxidation catalytic converter; Can make its second outlet be in cut-off state, and first outlet be on state through the control two position three-way valve; So tail gas can directly get into the vent gas treatment pipeline, carries out the catalytic reaction of HC.
In addition, need to prove that the main dusty gas in the tail gas of motor also comprises oxynitrides (NOX).The utility model is provided with oxynitrides catalyzer and activated carbon fiber absorber with fire-resistant oxidation resistant performance through the vent gas treatment pipeline.It is to be noted; (activated carbon fiber ACF) forms through the certain procedure carbonization-activation NACF, and it has the base attribute of raw material of wood-charcoal material; Promptly heat-resisting, acid resistant alkali, good, the hard wear resistant of mechanical property also have certain heat conduction, conductive capability simultaneously.Because NACF is fibrous form, it has the carbon atom above 50% to be exposed to the surface, is built into unique adsorption structure; At the different oxynitrides catalyzer of its area load; Like Cu, Pt etc. have the effect of catalyzed conversion at a certain temperature to pollutant.
So be provided with, activated carbon fiber absorber has good adsorption performance, can not reach under the situation of initiation temperature at the engine emission after-treatment device; Adsorb the oxynitrides in the exhaust fast; And its bigger surface area can provide a large amount of active sites for catalytic reaction, and after the normal operation of motor, its delivery temperature raises; Activated carbon fiber absorber reaches its initiation temperature and plays catalysis, the NO that stores before
XCatalysis is N
2
The high temperature resistance oxidation resistance that it is pointed out that NACF is poor, can not directly be used to handle motor exhaust.Therefore, make NACF successfully be applied to motor vehicle tail-gas purifying, must carry out carbonization-activation to it and handle, make it satisfy the usage requirement of engine emission reprocessing better.For example, can make the NACF modification:, then immerse 12: 1 H of mol ratio again with NACF logical ozone 6min under 175 ℃ through following method
3PO
4+ AL (OH)
3In the solution, logical nitrogen also is heated to 800 ℃ of insulation 20min.So, the oxidation resistance temperature of the NACF after modification is handled can satisfy usage requirement fully up to 865 ℃.
In addition, the engine emission after-treatment device that the utility model provides, also be provided with on its vent gas treatment pipeline exhaustion particulate collector (diesel particulate filter, DPF).Need to prove, contain a large amount of particulates in the tail gas stream,, must cause more serious pollution air if these particulates are directly drained in the air.The utility model is provided with exhaustion particulate collector through the vent gas treatment pipeline; Tail gas through the time particulate be deflated the filter core adsorption filtration of particle trapper; And more when the particulate of filter core accumulated, particle trapper is removed these particulates with the method for burning again.Therefore, the utility model is provided with exhaustion particulate collector through the vent gas treatment pipeline, can effectively solve the pollution problem that particulate causes in the motor exhaust.
In sum, the engine emission after-treatment device that the utility model provides, it can effectively solve the tail gas pollution problem that causes because of motor start and stop frequency is high, and the tail gas pollution problem that causes of engine start stage.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of engine emission after-treatment device in the utility model embodiment.
Embodiment
The utility model provides a kind of engine emission after-treatment device, and it can effectively solve the tail gas pollution problem that causes because of motor start and stop frequency is high, and the tail gas pollution problem that causes of engine start stage.
To combine the accompanying drawing among the utility model embodiment below, the technological scheme among the model utility embodiment is carried out clear, intactly description, obviously, described embodiment only is this embodiment part embodiment, rather than whole embodiments.Based on the embodiment in this embodiment, those of ordinary skills are not making the every other embodiment who is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 1, Fig. 1 is the structural representation of engine emission after-treatment device in this embodiment embodiment.
This embodiment provides a kind of engine emission after-treatment device; Comprise exhaust emissions pipeline 11 and vent gas treatment pipeline 12; Wherein exhaust emissions pipeline 11 directly links to each other with motor 13; The tail gas that motor 13 is discharged at first gets among the exhaust emissions pipeline 11, and vent gas treatment pipeline 12 is connected in exhaust emissions pipeline 11.The engine emission after-treatment device that this embodiment provides; Also comprise the two position three-way valve 15 that hydrocarbon capture pipeline 14 and inlet are connected with the outlet of said exhaust emissions pipeline 11; Said hydrocarbon captures pipeline 14 and is provided with hydrocarbon catcher 16; Said two position three-way valve 15 has first outlet and second outlet; Said first outlet is connected with said vent gas treatment pipeline 12, and said second outlet is connected with the inlet that said hydrocarbon captures pipeline 14, and the outlet of said hydrocarbon capture pipeline 14 is connected in said vent gas treatment pipeline 12; Along the tail gas stream direction; The outlet that said vent gas treatment pipeline 12 and said hydrocarbon capture pipeline 14 is connected on the rear pipeline of position, is provided with oxidation catalytic converter 17, exhaustion particulate collector 18 and with oxynitrides catalyzer and activated carbon fiber absorber 19 with fire-resistant oxidation resistant performance.
Need to prove that motor 13 discharge tail gas mainly comprise hydrocarbon and oxynitrides, tail gas gets into exhaust emissions pipeline 11 after being discharged by motor 13.When motor 13 starts or motor 13 start and stop frequencies when higher; The temperature of engine emission after-treatment device is lower; At this moment, can make its first outlet be in cut-off state through control two position three-way valve 15; And second outlet is on state, captures the pipeline 14 vent gas treatment pipeline 12 of being allowed for access afterwards so tail gas need pass through hydrocarbon.Because hydrocarbon captures pipeline 14 and is provided with hydrocarbon catcher 16 (HC catcher); Those skilled in the art it is understandable that; The HC catcher is suction, a desorption characteristics of utilizing zeolite molecular sieve, and when HC catcher temperature was no more than its desorption temperature, the HC catcher captured HC (hydrocarbon); And when temperature surpassed its desorption temperature, the HC catcher discharged HC.Therefore; So be provided with, when motor 13 has just started or motor 13 start and stop frequencies when higher, motor 13 discharge tail gas get into hydrocarbon and capture pipeline 14; HC (hydrocarbon) is captured by HC; Temperature until the engine emission after-treatment device raises, and when HC catcher temperature reached its desorption temperature, the HC that the HC catcher captures wanted with it to break away from.Need to prove that when the temperature of exhaust aftertreatment devices reached the desorption temperature of HC catcher, this temperature also can satisfy the initiation temperature of oxidation catalytic converter 17.HC gets into vent gas treatment pipeline 12 with tail gas stream and reacts with its oxidation catalytic converter 17 (DOC) of going up setting; Those skilled in the art it is understandable that, oxidation catalytic converter 17 (DOC) is the HC (hydrocarbon) in catalytic purification motor 13 tail gas effectively.After the temperature of treating exhaust aftertreatment devices reaches the initiation temperature of oxidation catalytic converter 17; Can make its second outlet be in cut-off state, and first outlet be on state through control two position three-way valve 15; So tail gas can directly get into vent gas treatment pipeline 12, carries out the catalytic reaction of HC.
In addition, need to prove that the main dusty gas in the tail gas of motor 13 also comprises oxynitrides (NO
X).This embodiment is provided with oxynitrides catalyzer and activated carbon fiber absorber 19 with fire-resistant oxidation resistant performance through vent gas treatment pipeline 12.It is to be noted; (activated carbon fiber ACF) forms through the certain procedure carbonization-activation NACF, and it has the base attribute of raw material of wood-charcoal material; Promptly heat-resisting, acid resistant alkali, good, the hard wear resistant of mechanical property also have certain heat conduction, conductive capability simultaneously.Because NACF is fibrous form, it has the carbon atom above 50% to be exposed to the surface, is built into unique adsorption structure; At the different oxynitrides catalyzer of its area load; Like Cu, Pt etc. have the effect of catalyzed conversion at a certain temperature to pollutant.
So be provided with, activated carbon fiber absorber has good adsorption performance, can not reach under the situation of initiation temperature at the engine emission after-treatment device; Adsorb the oxynitrides in the exhaust fast; And its bigger surface area can provide a large amount of active sites for catalytic reaction, and after motor 13 normal operations, its delivery temperature raises; Activated carbon fiber absorber reaches its initiation temperature and plays catalysis, the NO that stores before
XCatalysis is N
2
The high temperature resistance oxidation resistance that it is pointed out that NACF is poor, can not directly be used to handle motor 13 tail gas.Therefore, make NACF successfully be applied to motor vehicle tail-gas purifying, must carry out carbonization-activation to it and handle, make it satisfy the usage requirement of motor 13 discharging reprocessings better.For example, can make the NACF modification:, then immerse 12: 1 H of mol ratio again with NACF logical ozone 6min under 175 ℃ through following method
3PO
4+ AL (OH)
3In the solution, logical nitrogen also is heated to 800 ℃ of insulation 20min.So, the oxidation resistance temperature of the NACF after modification is handled can satisfy usage requirement fully up to 865 ℃.
In addition, the engine emission after-treatment device that this embodiment provides, also be provided with on its vent gas treatment pipeline 12 exhaustion particulate collector 18 (diesel particulate filter, DPF).Need to prove, contain a large amount of particulates in the tail gas stream,, must cause more serious pollution air if these particulates are directly drained in the air.This embodiment is provided with exhaustion particulate collector 18 through vent gas treatment pipeline 12; Tail gas through the time particulate be deflated the filter core adsorption filtration of particle trapper 18; And more when the particulate of filter core accumulated, particle trapper is removed these particulates with the method for burning again.Therefore, this embodiment is provided with exhaustion particulate collector 18 through vent gas treatment pipeline 12, can effectively solve the pollution problem that particulate causes in motor 13 tail gas.
In sum, the engine emission after-treatment device that this embodiment provides, it can effectively solve the tail gas pollution problem that causes because of motor 13 start and stop frequencies are high, and the tail gas pollution problem that causes motor 13 start up period.
In the preferred version of this embodiment, along the tail gas stream direction, the oxidation catalytic converter 17 on the vent gas treatment pipeline 12 is positioned at the place ahead of particle trapper, and promptly tail gas stream is at first passed through oxidation catalytic converter 17, then passes through particle trapper.
So be provided with, be arranged on the power of regeneration that the particle trapper front can effectively strengthen particle trapper to oxidation catalytic converter 17.The regeneration that should be appreciated that particle trapper needs very high inlet temperature, and row's temperature of motor 13 does not reach the regeneration temperature of particle trapper.And oxidation catalytic converter 17 can be hydrocarbon through oxidation, and oxidation reaction takes place, and improves the outlet of oxidation catalytic converter 17, i.e. the temperature of particle trapper inlet.In addition, oxidation catalytic converter 17 can be removed the SOF (Soluble Organic Fractions, soluble organic principle) in the particle emission, so is provided with, and can prevent effectively that particle trapper from being stopped up by SOF.
In addition; The engine emission after-treatment device that this embodiment provided; Its oxidation catalyzer front side can be provided with first temperature sensing device 20, and above-mentioned two position three-way valve 15 is specially the electromagnetism two position three-way valve, and the engine emission after-treatment device also comprises the control gear (not shown) with signal input part and signal output part; First temperature sensing device 20 is connected with the signal input part of control gear, and the electromagnetism two position three-way valve is connected with the signal output part of control gear.
Need to prove that first temperature sensing device 20 can be delivered to control gear with the temperature signal of sensing, control gear judges whether this temperature signal reaches the preset temperature of control gear; For example; Should as, the preset temperature of control gear can be 400 degree, when the said temperature signal rises to 400 when spending or drop to 400 when spending; Control gear sends and controls signal to the electromagnetism two position three-way valve; Make electromagnetism two-position three way valve events, and then, realize that hydrocarbon captures the automatic cut-off or the conducting of pipeline 14 or exhaust emissions pipeline 11.
In order to guarantee that reliably oxidation catalytic converter 17 temperature have arrived its initiation temperature, the control gear that this embodiment provided can have time delay module, and this time delay module can be provided with retard time, such as, the time delay module Preset Time is 60 seconds.
So be provided with, after oxidation catalytic converter 17 temperature surpass preset temperature, need to postpone 60 seconds, control module is sent control command again, and control electromagnetism two position three-way valve switches.So be provided with, can guarantee effectively that the temperature of oxidation catalytic converter 17 has surpassed the preset temperature of control module.
Certainly; Reliability for the temperature sensor that improves temperature inductor; The engine emission after-treatment device that this embodiment provided; The rear side of its oxidation catalytic converter 17 is provided with the second temperature sensing device (not shown), and second temperature sensing device is connected with the signal input part of control gear.
So be provided with, after the temperature sensor of first temperature sensing device 20 and second temperature sensing device all reached the preset temperature of control module, control module can be sent control command.Obviously, so be provided with, effectively evaded because of first temperature sensing device 20 breaks down, and caused tail gas stream directly to flow directly into vent gas treatment pipeline 12, cause more serious air-polluting problem by exhaust emissions pipeline 11.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the utility model.Multiple modification to these embodiments will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiments shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (6)
1. engine emission after-treatment device; Comprise exhaust emissions pipeline that links to each other with motor and the vent gas treatment pipeline that is connected with said exhaust emissions pipeline; It is characterized in that; Also comprise the two position three-way valve that hydrocarbon capture pipeline and inlet are connected with the outlet of said exhaust emissions pipeline; Said hydrocarbon captures pipeline and is provided with the hydrocarbon catcher, and said two position three-way valve has first outlet and second outlet, and said first outlet is connected with said vent gas treatment pipeline; Said second outlet is connected with the inlet that said hydrocarbon captures pipeline, and the outlet of said hydrocarbon capture pipeline is connected in said vent gas treatment pipeline; Along the tail gas stream direction; The outlet that said vent gas treatment pipeline and said hydrocarbon capture pipeline is connected on the rear pipeline of position, is provided with oxidation catalytic converter, exhaustion particulate collector and with oxynitrides catalyzer and activated carbon fiber absorber with fire-resistant oxidation resistant performance.
2. engine emission after-treatment device as claimed in claim 1 is characterized in that, along the tail gas stream direction, said oxidation catalytic converter is positioned at the place ahead of said particle trapper.
3. engine emission after-treatment device as claimed in claim 2; It is characterized in that; Said oxidation catalytic converter front side is provided with first temperature sensing device; Said two position three-way valve is specially the electromagnetism two position three-way valve; And said engine emission after-treatment device also comprises the control gear with signal input part and signal output part, and said first temperature sensing device is connected with the signal input part of said control gear, and said electromagnetism two position three-way valve is connected with the signal output part of said control gear.
4. engine emission after-treatment device as claimed in claim 3 is characterized in that the rear side of said oxidation catalytic converter is provided with second temperature sensing device, and said second temperature sensing device is connected with the signal input part of said control gear.
5. like each described engine emission after-treatment device of claim 3-4, it is characterized in that said control gear comprises the time delay module of the actuation time that is used to control said electromagnetism two position three-way valve.
6. engine emission after-treatment device as claimed in claim 5 is characterized in that, the Preset Time of said time delay module is 60 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203162438U CN202348388U (en) | 2011-08-26 | 2011-08-26 | Engine emission post-processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203162438U CN202348388U (en) | 2011-08-26 | 2011-08-26 | Engine emission post-processing device |
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| Publication Number | Publication Date |
|---|---|
| CN202348388U true CN202348388U (en) | 2012-07-25 |
Family
ID=46537397
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203162438U Expired - Lifetime CN202348388U (en) | 2011-08-26 | 2011-08-26 | Engine emission post-processing device |
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| CN (1) | CN202348388U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711623A (en) * | 2013-12-13 | 2014-04-09 | 王建友 | Automobile engine |
-
2011
- 2011-08-26 CN CN2011203162438U patent/CN202348388U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711623A (en) * | 2013-12-13 | 2014-04-09 | 王建友 | Automobile engine |
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Granted publication date: 20120725 |