CN1609418A - Microwave heating regeneration diesel oil engine carbon smoke particulate filter - Google Patents
Microwave heating regeneration diesel oil engine carbon smoke particulate filter Download PDFInfo
- Publication number
- CN1609418A CN1609418A CN 200410066483 CN200410066483A CN1609418A CN 1609418 A CN1609418 A CN 1609418A CN 200410066483 CN200410066483 CN 200410066483 CN 200410066483 A CN200410066483 A CN 200410066483A CN 1609418 A CN1609418 A CN 1609418A
- Authority
- CN
- China
- Prior art keywords
- filter
- microwave
- pipe
- microwave heating
- pressure sensor
- 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
Images
Abstract
The present invention is microwave heating for regenerating carbon smoke particle filter in diesel engine. There are microwave element installed outside the wall flow type honeycomb ceramic filter, metal casing for the filter and the microwave element to be installed inside, and inlet gas pressure sensor and outlet gas pressure sensor set separately in the inlet end and the outlet end of the metal casing. The microwave element has its one end connected via a relay to the positive electrode of the power supply and the other end to the negative electrode; and the inlet gas pressure sensor, the outlet gas pressure sensor and the relay are connected separately with the electronic control system. Under the control of the electronic control system, the microwave element works timely and the generated microwave heats and burns out the carbon particle deposited onto the filtering material to realize the regeneration of the filtering material.
Description
Technical field
The present invention relates to filter, especially relate to a kind of microwave heating regeneration diesel oil engine carbon smoke particulate filter.
Background technique
Because diesel engine has advantages such as good fuel economy, power character, durability and emission performance, constantly impels motor vehicle diesel to change into and is current international trend.Compare with petrol engine, the discharge amount of diesel engine harmful gas HC, CO is quite low, the CO discharging of diesel engine approximately has only 1/10 of petrol engine, and the NOx discharge amount and the petrol engine of diesel engine are in the same order of magnitude, but diesel particulate emission is about 30～80 times of petrol engine.Therefore, particle emission has been one of main factor of restriction diesel-oil vehicle development.The particulate that diesel engine is discharged is different with petrol engine.Petrol engine mainly is sulfuric acid, sulphate and lower-molecular substance.But diesel particulates is the particulate of tiny respiratory, and it is made up of the solid carbon nuclear of the countless compounds of absorption, and environmental hazard is serious.
Developed country just payes attention to the particle emission control of diesel-oil vehicle since the seventies.Through nearly 20 years development.The particle emission control technique of diesel engine obtained very big progress, in the situation that adopts various modern diesel-oil vehicle technology, the discharging of the mass concentration of particulate only is 10% before 20 years.But.The granular material discharged problem of diesel-oil vehicle does not have once and for all and solves.On the contrary, the challenge portion that is faced in this field is severe more.Be mainly reflected in following three aspects.
At first, the angle from burning solves the particle emission of diesel-oil vehicle near the limit.
Secondly, the emission controls by improving combustion technology has brought new problem for the particle emission control of diesel-oil vehicle.After having adopted modern diesel-oil vehicle technology, especially adopt the high-pressure injection technology after, though the particulate gross mass of diesel-oil vehicle reduces significantly, the quantity of particulate increases on the contrary to some extent.These particulate volumes and quality much smaller than before, but the harm that it caused is also bigger.
In addition, also be proved the effect of being expected with people and differ greatly by improving prospect that diesel quality reduces particle emission.
More than the cause description of three aspects, for more strict Abgasgesetz, it is not enough that the particle emission of diesel-oil vehicle wants the emission controls by improving combustion technology that only relies on up to standard.From a long-term point of view, exhaust aftertreatment devices will become a kind of standard configuration of vehicle.At present, particulate filter is to generally acknowledge effective small particle emission of diesel car post-processing technology, and it will become the major technique means that diesel-oil vehicle satisfies strict laws and regulations requirement with emission controls by improving combustion technology such as high-pressure injections.
As shown in Figure 1 and Figure 2, the wall of filter is a porous ceramics, in two adjacent passages, the outlet side of a passage is plugged, and the inlet side of another passage also is plugged, this is entered by the passage that inlet opens wide with regard to forcing exhaust, pass the porous ceramics wall and enter adjacent outlet open channels, and particle just is filtered on channel wall.The diameter of aperture is all at micron order in this material for trapping wall, and filter efficiency generally more than 80%, reaches as high as more than 90%, and high temperature resistant, mechanical strength is high.
Must in time remove the particulate of deposition during particulate filter, promptly filter be carried out " regeneration ", freely not make the diesel-oil vehicle mis-behave to prevent exhaust.Regeneration techniques is the technical barrier of filter.Regeneration generally is that the temperature of utilizing outside energy to improve in the filter makes particulate fire burns.The realization regeneration method mainly contains: forced regeneration, the combustion-supporting regeneration of oil spout, electric heating regeneration etc.Forced regeneration is the regeneration techniques that occurs early, and it is under the situation of the big load of diesel-oil vehicle, forcibly diesel-oil vehicle is carried out air inlet or exhaust throttle, thereby improves delivery temperature, makes filter obtain regeneration.Forced regeneration is difficult to use on the vehicle of often long-time low speed drivings such as bus.The combustion-supporting regeneration of oil spout also is early stage a kind of regeneration method, because device is complicated, and reliability, poor stability and realize the practical application difficulty.Electric heating regeneration is a kind of simple relatively regeneration method, but the ceramic filtering body heat-conducting property is low, so resistance wire external mode of heating efficient is very low, consume more outside energy, and inhomogeneous to the heating of filter.In order to remedy the deficiency of common electrical thermal regeneration, people have developed the filter that can conduct electricity, so voltage can directly be received the filter two ends and evenly heats.Be the SiC material as the material of this filter, its expansion coefficient is excessive, with practicability big gap is arranged.
Be present good comprehensive properties as shown in Figure 1 and Figure 2, with ceramic honey comb as the honeycomb ceramic filter filter of filter.
Summary of the invention
The object of the present invention is to provide a kind of microwave heating regeneration diesel oil engine carbon smoke particulate filter that adopts present good comprehensive properties honeycomb ceramic filter filter as filter.
The technical solution adopted for the present invention to solve the technical problems is: the porous ceramic pipe that comprises equidistant distribution, the mouth of pipe of porous ceramic pipe one end is used ceramic shutoff separately, the opposite honeycomb ceramic filter filter of using ceramic shutoff separately of the mouth of pipe of the mouth of pipe of the porous ceramic pipe the other end and an end, electronic control system.The honeycomb ceramic filter filter is equipped with microwave component outward, honeycomb ceramic filter filter and microwave component are installed in the metallic material shell, the tail gas outlet end of the gas inlet end of metallic material shell one end and the metallic material shell the other end is provided with air inlet pressure sensor and back pressure transducer respectively, one end of microwave component links to each other with positive source by relay, air inlet pressure sensor, back pressure transducer and relay are connected with electronic control system respectively, another termination power cathode of microwave component.
The present invention compares with background technique, the useful effect that has is: the honeycomb ceramic filter filter is wrapped with microwave component, microwave component is under the control of electronic control system (ECU), in time work, microwave takes place, utilize the particulate of microwave energy heating deposition on filtering material, make it fire burns, thereby realize the regeneration of filtering material.
Description of drawings
Fig. 1 is a honeycomb ceramic filter structure of filter principle sectional view;
Fig. 2 is the sectional view of Fig. 1;
Fig. 3 is a structural principle sectional view of the present invention.
Among the figure: 1, air inlet pressure sensor, 2, the metallic material shell, 3, microwave component, 4, porous ceramic pipe, 5, ceramic shutoff, 6, back pressure transducer, 7, electronic control system, 8, relay.
Embodiment
As shown in Figure 3, the present invention includes the porous ceramic pipe 4 of equidistant distribution, the mouth of pipe of porous ceramic pipe 4 one ends is used ceramic shutoff 5 separately, the opposite honeycomb ceramic filter filter of using ceramic shutoff 5 separately with the mouth of pipe of an end of the mouth of pipe of porous ceramic pipe 4 the other ends, electronic control system 7.The honeycomb ceramic filter filter is equipped with microwave component 3 outward, adopt a microwave heating pipe among Fig. 3, honeycomb ceramic filter filter and microwave component 3 are installed in the metallic material shell 2, the tail gas outlet end of the gas inlet end of metallic material shell 2 one ends and metallic material shell 2 the other ends is provided with air inlet pressure sensor 1 and back pressure transducer 6 respectively, one end of microwave component 3 links to each other with positive source by relay 8, air inlet pressure sensor 1, back pressure transducer 6 is connected with electronic control system 7 respectively with relay 8, another termination power cathode of microwave component 3.
Described porous ceramic pipe 4 materials are porous cordierite or SiC.
Described microwave component 3 is the microwave heating pipe, and the microwave heating pipe is 1～20.
Working principle of the present invention is as follows:
1, filter process
Filter is serially connected with after the Diesel Engine Exhaust Pipe, waste gas enters filter by inlet, because the special construction of filtering material porous ceramics, make the deleterious particle majority in the waste gas be filtered on channel wall, and the waste gas of the relative cleaning after filtering is got rid of by outlet, so play the effect of soot particle in the filtering exhaust, improved emission performance greatly.
2, regenerative process
Along with constantly carrying out of filter process, carbon soot particles constantly deposits in filtering material, causes exhaust back pressure to increase gradually, causes engine power performance and Economy to worsen.Therefore, must in time remove the particle that deposits in the filtering material, so that can work on.
The present invention adopts microwave component thermal regeneration technology.Its principle is: dielectric material is made up of polar molecule and nonpolar molecule, and under electromagnetic field effect, these polar molecules are from the polarity oriented of original random distribution state shift according to electric field.And under the high-frequency electromagnetic field action, these orientations constantly change by frequencies of alternating electromagnetism, thereby this process causes the motion of molecule to produce heat with mutual friction mutually.This moment, the field energy of alternating electric field was converted into the interior heat energy of medium, medium temperature is constantly raise, thereby realize the heating to medium.The maximum characteristics of microwave component heating are efficient quicks.
Owing to contain than juicy in the engine exhaust, therefore adopt the microwave component heating technology quite suitable.Because low-voltage DC supply is adopted in microwave component work, therefore can directly utilize the battery power of motor again.Its concrete regenerative process is as follows:
In filter process carried out, the air inlet pressure sensor 1 of ingress and the back pressure transducer in outlet port 6 were constantly measured suction pressure and exhaust pressure, and pressure signal imports electronic control system 7 (ECU) immediately into.Along with the carrying out of filter process, the continuous deposition of carbon soot particles makes the gas passing capacity of filtering material constantly descend, so suction pressure and exhaust pressure difference constantly increase.Electronic control system 7 (ECU) is being monitored the intake and exhaust pressure difference in real time according to the pressure signal that sensor obtains, when this pressure difference reaches a certain predefined value, electronic control system 7 (ECU) is sent signal immediately, microwave takes place in controlled microwave element 3, at the inner thermal source that forms space distribution of filtering material, carbon soot particles to deposition heats, thereby makes particle absorb heat, catch fire, burn, thereby realizes the regeneration of filtering material.The endurance of regeneration, i.e. the endurance of microwave component 3 work is determined according to the intake and exhaust pressure difference by electronic control system 7 (ECU).
The foregoing description is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all fall within the scope of protection of the present invention.
Claims (3)
1. microwave heating regeneration diesel oil engine carbon smoke particulate filter, the porous ceramic pipe (4) that comprises equidistant distribution, the mouth of pipe of porous ceramic pipe (4) one ends is used ceramic shutoff (5) separately, the opposite honeycomb ceramic filter filter of using ceramic shutoff (5) separately of the mouth of pipe of porous ceramic pipe (4) the other end with the mouth of pipe of an end, electronic control system (7), it is characterized in that: the honeycomb ceramic filter filter is equipped with microwave component (3) outward, honeycomb ceramic filter filter and microwave component (3) are installed in the metallic material shell (2), the tail gas outlet end of the gas inlet end of metallic material shell (2) one ends and metallic material shell (2) the other end is provided with air inlet pressure sensor (1) and back pressure transducer (6) respectively, one end of microwave component (3) links to each other with positive source by relay (8), air inlet pressure sensor (1), back pressure transducer (6) is connected with electronic control system (7) respectively with relay (8), another termination power cathode of microwave component (3).
2. according to the described a kind of microwave heating regeneration diesel oil engine carbon smoke particulate filter of claim 1, it is characterized in that: described porous ceramic pipe (4) material is porous cordierite or SiC.
3. according to the described a kind of microwave heating regeneration diesel oil engine carbon smoke particulate filter of claim 1, it is characterized in that: described microwave component (3) is the microwave heating pipe, and the microwave heating pipe is 1～20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410066483 CN1609418A (en) | 2004-09-15 | 2004-09-15 | Microwave heating regeneration diesel oil engine carbon smoke particulate filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410066483 CN1609418A (en) | 2004-09-15 | 2004-09-15 | Microwave heating regeneration diesel oil engine carbon smoke particulate filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1609418A true CN1609418A (en) | 2005-04-27 |
Family
ID=34764903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410066483 Pending CN1609418A (en) | 2004-09-15 | 2004-09-15 | Microwave heating regeneration diesel oil engine carbon smoke particulate filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1609418A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852598A (en) * | 2011-06-29 | 2013-01-02 | 南京辉虎环保科技有限公司 | Engine exhaust filter element with microwave generator |
| CN104632321A (en) * | 2014-12-05 | 2015-05-20 | 佛山市中科院环境与安全检测认证中心有限公司 | Microwave energy-saving catcher |
| CN105179049A (en) * | 2015-09-18 | 2015-12-23 | 浙江大学 | Double-cavity type diesel engine exhaust particle capturing device based on microwave heating regeneration technology |
| CN108049941A (en) * | 2018-01-08 | 2018-05-18 | 陈爱国 | A kind of diesel engine exhaust gas treatment device and method |
| CN109424393A (en) * | 2018-01-08 | 2019-03-05 | 陈爱国 | A kind of exhaust gas processing device and method |
| CN110905632A (en) * | 2019-12-09 | 2020-03-24 | 黄加跃 | Electric quantity emergency supply device in road construction process |
-
2004
- 2004-09-15 CN CN 200410066483 patent/CN1609418A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852598A (en) * | 2011-06-29 | 2013-01-02 | 南京辉虎环保科技有限公司 | Engine exhaust filter element with microwave generator |
| CN104632321A (en) * | 2014-12-05 | 2015-05-20 | 佛山市中科院环境与安全检测认证中心有限公司 | Microwave energy-saving catcher |
| CN104632321B (en) * | 2014-12-05 | 2017-05-17 | 佛山市中科院环境与安全检测认证中心有限公司 | Microwave energy-saving catcher |
| CN105179049A (en) * | 2015-09-18 | 2015-12-23 | 浙江大学 | Double-cavity type diesel engine exhaust particle capturing device based on microwave heating regeneration technology |
| CN108049941A (en) * | 2018-01-08 | 2018-05-18 | 陈爱国 | A kind of diesel engine exhaust gas treatment device and method |
| CN109424393A (en) * | 2018-01-08 | 2019-03-05 | 陈爱国 | A kind of exhaust gas processing device and method |
| CN110905632A (en) * | 2019-12-09 | 2020-03-24 | 黄加跃 | Electric quantity emergency supply device in road construction process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1288330C (en) | Particulate trap | |
| CN101363348B (en) | Electrically heated dpf start-up strategy | |
| CN100395435C (en) | Wall flow type net plate apparatus with reverse jet regenerating unit for collecting microparicle discharged by diesel vehicle | |
| CN101070770B (en) | Diesel particulate filter regeneration via resistive surface heating | |
| US20120151992A1 (en) | Particulate matter detection sensor | |
| CN1920267A (en) | Electrical diesel particulate filter (DPF) regeneration | |
| BR0318291B1 (en) | Diesel exhaust aftertreatment system for cleaning regulated and non-regulated pollutants and diesel engine exhaust treatment method | |
| CN107842412B (en) | Regeneration method and system of diesel engine particle catcher | |
| CN103861396A (en) | Post-treatment purifier for internal combustion engine particle emission | |
| JP2010031799A (en) | Exhaust emission control device for internal combustion engine | |
| CN1609418A (en) | Microwave heating regeneration diesel oil engine carbon smoke particulate filter | |
| CN106499551B (en) | A kind of EGR circuit system of cleaning | |
| JP2020045889A (en) | Exhaust purification device | |
| US5938802A (en) | Exhaust gas purifier | |
| WO2007107078A1 (en) | Exhaust infrared putitying device and its method of diesel engine | |
| CN101629505A (en) | Porous metallic filter and vertex regeneration device for diesel engine | |
| CN102733897A (en) | Diesel engine post-treatment system | |
| CN109424392B (en) | Efficient low-pollution combustion system based on nano fluid fuel | |
| JP2004353596A (en) | Exhaust emission control device | |
| CN206111288U (en) | Porous ceramic honey comb particle trap of Cordierite wall -flow type | |
| CN107956554B (en) | Efficient low-pollution power system based on nanofluid fuel | |
| CN2767669Y (en) | Exhaust particle catcher for diesel engine | |
| CN101053772A (en) | Zone heated inlet ignited diesel particulate filter regeneration | |
| CN203978565U (en) | A kind of spiral oxidation catcher | |
| CN207960723U (en) | Exhaust gas purification system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |