CN105649732A - Heating device of three-way catalytic converter - Google Patents
Heating device of three-way catalytic converter Download PDFInfo
- Publication number
- CN105649732A CN105649732A CN201610031109.0A CN201610031109A CN105649732A CN 105649732 A CN105649732 A CN 105649732A CN 201610031109 A CN201610031109 A CN 201610031109A CN 105649732 A CN105649732 A CN 105649732A
- Authority
- CN
- China
- Prior art keywords
- catalytic converter
- effect catalytic
- triple
- heating
- conversion unit
- 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.)
- Pending
Links
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 66
- 238000010438 heat treatment Methods 0.000 title claims abstract description 23
- 238000006243 chemical reaction Methods 0.000 claims abstract description 31
- 238000005485 electric heating Methods 0.000 claims abstract description 23
- 230000000694 effects Effects 0.000 claims description 42
- 238000004146 energy storage Methods 0.000 claims description 10
- 238000011084 recovery Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 abstract description 10
- 239000002912 waste gas Substances 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 description 9
- 231100000719 pollutant Toxicity 0.000 description 9
- 230000009466 transformation Effects 0.000 description 8
- 238000000605 extraction Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
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- 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
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
- F01N5/025—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat the device being thermoelectric generators
-
- 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
- F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
-
- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/16—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric heater, i.e. a resistance heater
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a heating device of a three-way catalytic converter. The heating device comprises an electric heating conversion unit used for heating engine tail gas flowing to the three-way catalytic converter in a convection mode. According to the heating device of the three-way catalytic converter, the engine tail gas flowing to the three-way catalytic converter in the convection mode is heated in advance, the temperature of waste gas at an inlet of the three-way catalytic converter can be increased, and therefore the conversion efficiency of the three-way catalytic converter can be effectively improved, and the automobile tail gas can be well purified.
Description
Technical field
The present invention relates to motor vehicle exhaust emission technical field, specifically, the present invention relates to a kind of heating triple-effect catalytic converter device.
Background technology
Along with China or even being continuously increased of Global Auto recoverable amount, the impact of environment is also on the rise by motor vehicle exhaust emission pollutant, in order to reduce the impact on environment of the motor vehicle exhaust emission pollutant, current every country has corresponding motor vehicle exhaust emission regulation, and it is tight constantly adding, this just constantly brings new challenge to the control device of motor vehicle exhaust emission pollutant, and the method controlling motor vehicle exhaust emission pollutant at present carries out mainly through three aspects, first is by improving engine combustion, it is referred to as emission controls by improving combustion, such as by injection pressure and fuel injector aperture, hole count the mode such as is carried out and is improved combustion oil atomization, by improving oil spout angle, the structure of combustor promotes the mixing of fuel oil and air, reduce quenching effect and gap effect, these schemes all can effectively reduce the raw emissions of automobile engine, second is by automobile engine management system, motor vehicle exhaust emission pollutant are improved by the careful optimization of engine calibration, the light-off time of three-way conversion catalyst converter can be shortened as postponed the angle of ignition, simultaneously facilitating burning in machine, additionally the careful demarcation of transient working condition carrys out the schemes such as conservative control air-fuel ratio and is likely to and effectively reduces motor vehicle exhaust emission pollutant, 3rd is by installing the after-treatment devices such as triple effect catalytic converter in automobile exhaust system additional, by redox reaction, automotive emissions are carried out conversion processing, to reduce the pollutant that automobile is ultimately discharged in air, reaching to reduce the motor vehicle exhaust emission purpose to environmental effect, these three vehicle maintenance service mode is all the effective means reducing motor vehicle exhaust emission in current automotive development.
Additionally, owing to the initiation temperature (pollutant transformation efficiency reaches delivery temperature when 50%) of current triple effect catalytic converter is general at about 300 DEG C, escort vehicle exercises being continuously increased of mileage simultaneously, such as to reach 160,000 kilometers at Chinese Light-duty automobile emissions standards the 5th durable mileage of demands vehicular discharge issued at present, the durable mileage of higher standard requires then can be longer, and now the initiation temperature of triple effect catalytic converter all will be with the increase of VMT Vehicle-Miles of Travel and constantly raises, at present because constantly adding of regulation is tight, need the significantly lifting triple effect catalytic converter performance to vehicle maintenance service, except being continuously increased on the content of noble metal, the volume of triple effect catalytic converter is also in continuous increasing simultaneously, but due to when automobile front storehouse arrangement space is limited, the requirement being continuously increased volume of triple effect catalytic converter cannot be met, therefore, now a lot of arrangements all adopts two-stage triple-effect catalytic unit, namely a prime triple effect catalytic converter is arranged in the front storehouse of electromotor, a rear class triple effect catalytic converter is arranged under the chassis of automobile, owing to rear class triple effect catalytic converter distance engine exhaust exports farther out, its inlet temperature generally also can only be maintained at about 300 DEG C, the maximum conversion efficiency of three change catalytic converters cannot be played, under such exhaust gas temperature conditions, need on the one hand to increase the schemes such as noble metal to improve transformation efficiency, therefore the cost of triple effect catalytic converter is added, it is also required on the other hand put into great amount of cost in the improvement of electromotor raw emissions, just can overcome the disadvantages that triple-effect catalytic unit transformation efficiency low causing discharges higher problem.
Summary of the invention
The present invention provides a kind of heating triple-effect catalytic converter device, it is therefore an objective to improve the triple effect catalytic converter conversion performance to automobile exhaust contaminant.
In order to solve above-mentioned technical problem, the technical solution adopted in the present invention is: heating triple-effect catalytic converter device, including the electric heating conversion unit for the motor exhaust flowing to triple effect catalytic converter is heated.
Described electric heating conversion unit is connected with the air inlet of described triple effect catalytic converter.
Described electric heating conversion unit has the resistance wire for producing heat.
Heating triple-effect catalytic converter device also includes for by the heat recovery in the motor exhaust flowed out in described triple effect catalytic converter the thermoelectric converting unit being converted into electric energy.
Described thermoelectric converting unit is connected with the air vent of described triple effect catalytic converter.
Heating triple-effect catalytic converter device also includes for storing electric energy and the electric energy storage being connected with described electric heating conversion unit and described thermoelectric converting unit and control unit.
The heating triple-effect catalytic converter device of the present invention, by the motor exhaust flowing to triple effect catalytic converter is heated in advance, so can improve the EGT of triple effect catalytic converter porch, such that it is able to the conversion efficiency of very effective raising triple effect catalytic converter, vehicle maintenance service is played good purification.
Accompanying drawing explanation
Fig. 1 is the structural representation of heating triple-effect catalytic converter device of the present invention;
Labelling in above-mentioned figure is: 1, electric heating conversion unit; 2, electric energy storage and control unit; 3, thermoelectric converting unit; 4, triple effect catalytic converter.
Detailed description of the invention
Below against accompanying drawing, by the description to embodiment, the specific embodiment of the present invention is described in further detail, it is therefore an objective to help those skilled in the art that the design of the present invention, technical scheme are had more complete, accurate and deep understanding, and contribute to its enforcement.
Certain transformation efficiency is just possessed because the triple effect catalytic converter of the after-treatment system of general vehicle is required for reaching certain operating temperature, it is referred to as initiation temperature (delivery temperature when each automobile exhaust contaminant transformation efficiency is reached more than 50%), it is typically in about 300 DEG C, and to make the transformation efficiency of triple effect catalytic converter reach more than 90%, its inlet temperature at least needs to reach more than 600 DEG C, and no matter the rear class of regular gasoline car is in the cold-starting automobile stage or in normal work stage, all it is unable to reach this temperature, therefore rear class does not all play its maximum performance at present, the transformation efficiency of the pollutant namely automobile discharged can not reach triple effect catalytic converter maximum conversion efficiency.
As shown in Figure 1, the invention provides a kind of heating triple-effect catalytic converter device, including the electric heating conversion unit 1 for the motor exhaust flowing to triple effect catalytic converter is heated, for by the heat recovery in the motor exhaust flowed out in triple effect catalytic converter and be converted into electric energy thermoelectric converting unit 3 and be used for storing electric energy electric energy storage and control unit 2, electric energy storage and control unit 2 being connected with electric heating conversion unit 1 and thermoelectric converting unit 3, be used for controlling electric heating conversion unit 1 and thermoelectric converting unit 3.
Specifically, as it is shown in figure 1, electric heating conversion unit 1 is connected with the air inlet of triple effect catalytic converter, thermoelectric converting unit 3 is connected with the air vent of triple effect catalytic converter. the exhaust temperature discharged because of the gas extraction system of general vehicle is approximately in about 300 DEG C, therefore store at the electric energy of this device and control unit 2 stores again after the heat in the discharged tail gas of gas extraction system can being reclaimed and be converted into electric energy by the thermoelectric converting unit 3 of this device, wherein electric energy storage and control unit 2 possess the control function of whole device work, the main control function to thermoelectric converting unit 3 with electric heating conversion unit 1 duty, final recycling electric energy storage and control unit 2 are powered for electric heating conversion unit 1, waste gas automobile discharged by electric heating conversion unit 1 is heated.
Electric heating conversion unit 1 has and electric energy storage and control unit 2 is connected and for producing the resistance wire of heat, and resistance wire generates heat, and the motor exhaust flowing in electric heating conversion unit 1 is heated, and improves and enters the temperature of arrival end in triple effect catalytic converter.
As preferably, electric heating conversion unit 1 also has temperature sensor, the storage of temperature sensor electric energy and control unit 2 connect, temperature sensor is used for detecting electric heating conversion unit 1 internal temperature, and transmit signals to electric energy storage and control unit 2, electric energy storage and control unit 2 are by controlling the power on/off of resistance wire, to control the duty of electric heating conversion unit 1, it is to avoid the EGT heated by this device is too high and causes that triple effect catalytic converter damages.
When vehicle is in running order, the heat of the gas extraction system triple effect catalytic converter port of export can be converted into electric energy by thermoelectric converting unit 3 and be stored by the heater of the present invention, simultaneously according to the electricity of storage again through electric heating conversion unit 1, the electric energy of gas extraction system is converted to heat energy, owing to the delivery temperature of rear class triple effect catalytic converter arrival end is relatively low, it is possible that tail gas electromotor discharged by this device is heated, so can improve the EGT of triple effect catalytic converter porch, the very effective conversion efficiency that improve triple effect catalytic converter, vehicle maintenance service is played good purification and does use.
Consider the difference that different electromotor and car load discharge are demarcated, the duty of heater of the present invention needs to carry out individually coupling and demarcation according to engine condition and position thereof, avoid owing to duty is good and cause working effect undesirable or device is damaged, simultaneously need to avoid owing to the EGT after heating is too high and cause the damage to triple effect catalytic converter.
By analyzing, the waste-gas heat of recovery can be utilized the heating temperatures of triple effect catalytic converter arrival end to more than 700 DEG C, specifically need the temperature that reaches required for the waste gas heating of the exhaust entrance end to triple effect catalytic converter can by the demarcation of this device is configured, and under this temperature conditions, the transformation efficiency of triple effect catalytic converter can improve more than 30% substantially on basis before this, therefore, the used heat that aerofluxus is discharged can be utilized to heat the device of triple effect catalytic converter inlet temperature by installing this additional, generally vehicular discharge can be reduced by more than 30%.
Above in conjunction with accompanying drawing, the present invention is exemplarily described; the obvious present invention implements and is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that the design of the method for the present invention carries out with technical scheme; or the not improved design by the present invention and technical scheme directly apply to other occasion, all within protection scope of the present invention.
Claims (6)
1. heating triple-effect catalytic converter device, it is characterised in that: include the electric heating conversion unit for the motor exhaust flowing to triple effect catalytic converter is heated.
2. heating triple-effect catalytic converter device according to claim 1, it is characterised in that: described electric heating conversion unit is connected with the air inlet of described triple effect catalytic converter.
3. heating triple-effect catalytic converter device according to claim 1, it is characterised in that: described electric heating conversion unit has the resistance wire for producing heat.
4. heating triple-effect catalytic converter device according to claim 1, it is characterised in that: also include for by the heat recovery in the motor exhaust flowed out in described triple effect catalytic converter the thermoelectric converting unit being converted into electric energy.
5. heating triple-effect catalytic converter device according to claim 4, it is characterised in that: described thermoelectric converting unit is connected with the air vent of described triple effect catalytic converter.
6. heating triple-effect catalytic converter device according to claim 4, it is characterised in that: also include for storing electric energy and the electric energy storage being connected with described electric heating conversion unit and described thermoelectric converting unit and control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610031109.0A CN105649732A (en) | 2016-01-18 | 2016-01-18 | Heating device of three-way catalytic converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610031109.0A CN105649732A (en) | 2016-01-18 | 2016-01-18 | Heating device of three-way catalytic converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105649732A true CN105649732A (en) | 2016-06-08 |
Family
ID=56486472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610031109.0A Pending CN105649732A (en) | 2016-01-18 | 2016-01-18 | Heating device of three-way catalytic converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105649732A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429885A (en) * | 2008-12-11 | 2009-05-13 | 洛阳北方易初摩托车有限公司 | Heating type exhausting silencer of motorcycle |
| CN101956594A (en) * | 2010-08-27 | 2011-01-26 | 奇瑞汽车股份有限公司 | Engine waste gas energy utilization device and automobile using same |
| CN203201632U (en) * | 2013-04-26 | 2013-09-18 | 陕西理工学院 | Drying silencer recycling automobile exhaust waste heat |
| CN103993939A (en) * | 2014-06-06 | 2014-08-20 | 中国地质大学（武汉） | Integrated device for automotive exhaust purification treatment and waste heat power generation |
| CN204476498U (en) * | 2015-03-17 | 2015-07-15 | 曾灿辉 | Energy-saving and cost-reducing system during automobile internal engine cold-starting |
-
2016
- 2016-01-18 CN CN201610031109.0A patent/CN105649732A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429885A (en) * | 2008-12-11 | 2009-05-13 | 洛阳北方易初摩托车有限公司 | Heating type exhausting silencer of motorcycle |
| CN101956594A (en) * | 2010-08-27 | 2011-01-26 | 奇瑞汽车股份有限公司 | Engine waste gas energy utilization device and automobile using same |
| CN203201632U (en) * | 2013-04-26 | 2013-09-18 | 陕西理工学院 | Drying silencer recycling automobile exhaust waste heat |
| CN103993939A (en) * | 2014-06-06 | 2014-08-20 | 中国地质大学（武汉） | Integrated device for automotive exhaust purification treatment and waste heat power generation |
| CN204476498U (en) * | 2015-03-17 | 2015-07-15 | 曾灿辉 | Energy-saving and cost-reducing system during automobile internal engine cold-starting |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160608 |