CN101519994A - Independent active regeneration DPF (Diesel Particulate Filter) system and independent regeneration method - Google Patents
Independent active regeneration DPF (Diesel Particulate Filter) system and independent regeneration method Download PDFInfo
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- CN101519994A CN101519994A CN200810062308A CN200810062308A CN101519994A CN 101519994 A CN101519994 A CN 101519994A CN 200810062308 A CN200810062308 A CN 200810062308A CN 200810062308 A CN200810062308 A CN 200810062308A CN 101519994 A CN101519994 A CN 101519994A
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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
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- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
The invention relates to an independent active regeneration DPF (Diesel Particulate Filter) system and an independent regeneration method used for a generation DPF, wherein a back pressure sensor and a temperature sensor transmits a detected back pressure signal and a detected temperature signal to a controller, when back pressure and back pressure and temperature are larger than the given pressure and temperature values, a controller instruction diesel motor sprays diesel fuel into an exhaust pipe through an oil return pipe and a diesel spray nozzle, fuel vapor is subjected to 'oxidized combustion' in a diesel oxidation catalyst (DOC) to cause the temperature at the inlet of a silicon carbide wall-flow type filter (DPF) to be quickly raised to 400 DEG C or 650 DEG C, and carbon dust accumulated in the silicon carbide wall-flow type filter (DPF) is ignited, then, the controller detects the change of parameters of back pressure and back pressure temperature and controls the spray amount to ensure that the regeneration reaches the given ending parameters, and when the regeneration reaches the given ending parameters, the regeneration process is automatically ended.
Description
Technical field
The present invention relates to a kind of independent initiative regeneration diesel particulate filter system and independent regeneration method that is used for diesel particulate filter regeneration, belong to system integration technology and manufacturing field that diesel exhaust gas pollutes microparticles collection device, reclaimer and the regeneration method of control.
Background technique
Regeneration techniques is the normal key technology of using of diesel engine particle catcher, is divided into outside providing or the initiative regeneration of supplemental heat source is provided, and passive regeneration two major types that only rely on the normal exhaust thermal source.For the various diesel vehicles of city driving cycle, because average exhaust is lower, passive regeneration can not satisfy the needed temperature of regeneration, causes particle trapper to stop up, burn out, and causes vehicular discharge to exceed standard even influences the normal operation of vehicle.In order to solve the problem of reliable regeneration, many initiative regeneration systematic researches and test have appearred, as adopt the back injection of engine management, electric heating, fuel nozzle, the mode of initiative regenerations such as external heat stove, as patent CN1861992A, title " self burning trapper for waste gas particle from diesel oil internal combustion engine and particle treatment method ", self burning trapper for waste gas particle from diesel oil internal combustion engine is positioned at outlet pipe, pressure transducer is positioned at the relief opening of internal combustion engine air vent or outlet pipe, its signal output part connects the signal input part of controller, the signal output part of controller connects the power switch control end, and power switch is just connecing the self burning trapper for waste gas particle from diesel oil internal combustion engine two ends respectively by power line, negative pole.But more or less there is the system complex of increase in the method for existing initiative regeneration, cooperates difficulty with original vehicle, poor reliability, problems such as equipment investment and operating cost height.
Summary of the invention
Purpose of design: design and a kind ofly can not rely on vehicle motor and work alone, be adapted to the initiative regeneration system of various types of diesel engine and operation operating mode, can carry out Regeneration Treatment to the particulate that is captured in the particle trapper in time according to the back pressure situation of Exhaust gas purifying device.
Design proposal: in order to realize above-mentioned purpose of design.1, the setting of Exhaust gas purifying device is one of feature of the present invention.The purpose of doing like this is: the purifying part with thermal insulation housing designs that is made of an integral body oxidation catalytic converter (DOC) carrier and silicon carbide wall-flow filter (DPF) encapsulation, DOC adopts the cordierite honeycomb ceramic of low light-off temperature catalyst coat, DPF is recrystallized silicon carbide (R-SiC) honeycomb ceramic body that adopts the applicant to apply for a patent, wall thickness between the channel density of these recrystallized silicon carbide honeycomb ceramic body 200 hole/square inches and 0.3mm, has fabulous temperature characteristic, mechanical strength and durability, represent higher PM capture rate through actual detected, had lower pressure drop and bigger permission carbon ash heap(ed) capacity simultaneously.2, the design of initiative regeneration system is two of a feature of the present invention.The purpose of doing like this is: this system is different from the method for conventional initiative regeneration such as spraying behind outside oil burner, electric heating and the motor, adopted the mode of catalytic combustion, efficiently provide external heat source to carry out initiative regeneration rapidly, be totally independent of the operating mode and the injection situation of engine.System is made up of electronic detection, controlling component and special nozzle etc., testing signal according to back pressure, temperature, system starts regenerative process automatically, in outlet pipe, spray into diesel fuel by special diesel fuel nozzle, fuel fume " oxidizing fire " and heat release in having the DOC of thermal insulation design, make the temperature of DPF import bring up to 400 ℃ (when adopting fuel to carry additive) or 650 ℃ rapidly, light the carbon ash of DPF inner accumulated, begin to carry out regenerative process.Controller detects the variation of back pressure, temperature parameter, the parameter of control emitted dose to guarantee that regeneration is carried out, and finish regenerative process automatically.3, fuel carries annotate the automatically design of syringe pump of catalyzer, is three of feature of the present invention.The purpose of doing like this is: fuel carries catalyzer (FBC) can make the regeneration temperature of ash by dropping to 350～400 ℃ more than 600 ℃, DPF with respect to catalyst coat, recovery time is short, only need several minutes, the problem that does not have simultaneously the aging of catalyzer and poison, and can use the diesel oil of sulphur content at 350ppm to 500ppm.Additive adopts the cerium base or the iron-based additive of the supply of material of commercialization, and addition is 1/3000 of an amount of fuel, directly adds fuel tank in proportion according to volume read-out automatically during group refueling.Native system is by 2～4 liters additive storage tank, calibrated shot pump, electronic control module, compositions such as fuel level in tank increment signal device.When refueling, fuel level in tank increment signal device detects the increasing amount of oil level at every turn, and the direct current signal of exporting one 0～10 volt is to electronic control module, and electronic control module starts the calibrated shot pump, adds quantitative additive according to predetermined additive and fuel oil ratio to fuel tank.In addition, additive storage tank is equipped with the liquid level signal device.When additive will use up, report to the police by display floater.4, the design of automatically controlled and in-service monitoring, warning, data logger is four of a feature of the present invention.The purpose of doing like this is: this device comprises the vehicle-mounted monitoring system of automatical control system (ECU) (OBC) of DPF system, except that carrying out the regeneration of DPF automatically reliably, system is by the time lag of setting, to back pressure, parameters such as temperature detect and data storage, system has sound and light of alarm when back pressure is unusual, indicate the situation of back pressure by the signaling lamp of different colours, set and when back pressure is lower than 1kPa, report to the police, indication may be broken or the outlet pipe leakage by DPF, report to the police when back pressure reaches 15kPa, indication DPF will need to be serviced soon, report to the police when back pressure reaches 20kPa, indication DPF need safeguard immediately, thus the reliable and effective operation of assurance DPF system.System can transmit the data of storage to laptop computer by USB interface, and by DAS the data of record is analyzed, and can judge accurately the situation of operation and the problem of existence.In addition, can also realize the remote transmission of data by GSM/GPRS module (selectable unit).
Technological scheme 1: independent initiative regeneration diesel particulate filter system, it comprises storage battery, fuel tank is given the diesel engine fuel feeding by fuel supply line, diesel engine exhaust is communicated with Exhaust gas purifying device, oxidation catalyzer and particulate filter are housed in the Exhaust gas purifying device, with be provided with diesel fuel nozzle in the outlet pipe of Exhaust gas purifying device import joint and be communicated with fuel supply line by oil pipe and regenerating control device, return tube one end is communicated with diesel engine, the other end is communicated with fuel tank, Exhaust gas purifying device is respectively equipped with back pressure sensor, temperature transducer, back pressure sensor, the signaling line that temperature transducer passes through separately respectively is connected with the signal end of controller.
Technological scheme 2: initiative regeneration diesel particulate filter regeneration method, back pressure sensor, temperature transducer is with detected back pressure signal, temperature signal transfers to controller, when back pressure pressure during greater than the force value that sets, controller instruction regenerating control device 11 control regenerative processes begin, diesel oil enters diesel fuel nozzle by fuel supply line and regenerating control device 11, in outlet pipe, spray into diesel fuel, fuel fume " oxidizing fire " heat release in oxidation catalytic converter (DOC) carrier of evaporation, make the temperature of silicon carbide wall-flow filter (DPF) import bring up to 400 ℃ or 650 ℃ rapidly, light the carbon ash of silicon carbide wall-flow filter (DPF) inner accumulated, regeneration begins to carry out, exhaust back pressure is along with the burning of carbon ash descends gradually, at this moment, controller detects back pressure pressure, the variation of temperature parameter, control emitted dose and discharge time are to guarantee the needed running parameter of regeneration, when back pressure is reduced to the numerical value of setting, stop to spray, along with burning away of carbon ash finished the primary recycling process, whole system constitutes a closed loop control system.
The present invention compares with background technique, and the one, the initiative regeneration system can only finish regenerative process 150 ℃ the time smoothly in delivery temperature, regenerates reliably, avoid DPF to stop up and cause damage, regeneration simultaneously heats up rapidly, the utilization ratio height of fuel, and the fuel consumption that regeneration increases is no more than 1%; The 2nd, the initiative regeneration system is particularly suitable for the diesel vehicle of the low exhaust temperature that travels in the city, administers as the black smoke pollution of bus, delivery car, refuse collection vehicle, postal car and transforms; The 3rd, the management that does not rely on motor owing to the initiative regeneration system works alone, do not influence the operating mode of motor, exhaust emission transformation for vehicle does not relate to original engine system and control thereof, therefore is particularly suitable for the transformation of (comprising Europe 0, Europe 1, Europe 2) of various types of old diesel vehicles.
Description of drawings
Fig. 1 is the schematic representation of independent initiative regeneration diesel particulate filter system.
Embodiment
Embodiment: with reference to Fig. 1.Independent initiative regeneration diesel particulate filter system, it comprises the storage battery 16 of former vehicle, supply with the required power supply of load system, fuel tank 1 is given diesel engine 20 fuel feeding by fuel supply line 2, diesel engine 20 outlet pipes 17 are communicated with Exhaust gas purifying device 13, oxidation catalyzer 22 and particulate filter are housed in the Exhaust gas purifying device 13, and are provided with diesel fuel nozzle in the outlet pipe of Exhaust gas purifying device 13 import joints
21And be communicated with fuel supply line 2 by oil pipe 18 and regenerating control device 11, return tube 3 one ends are communicated with diesel engine 20, the other end is communicated with fuel tank 1, Exhaust gas purifying device 13 is respectively equipped with back pressure sensor and temperature transducer, and back pressure sensor and the temperature transducer signaling line 12 by separately respectively are connected with the signal end of controller 5 with 14, the signal output part of controller 5 is connected with the signal input part of display board 8 by signaling line 9, and controller 5 power inputs are connected with power supply 16 by lead 15 and are powered to controller by power supply 16.The regeneration control signal of controller 5 outputs to regenerating control device 11, regenerating control device 11 connects fuel supply line and diesel fuel nozzle 21, regenerating control device 11 is made of pressurizer, atomizer, metering mechanism and data processing circuit, metering mechanism measures the size of using oil mass according to the instruction of data processing circuit output, and is delivered to diesel fuel nozzle by oil pipe after pressurizer pressurization, atomizer atomizing.Data processing circuit can be numerical control or chip controls.
Controller 5 is connected with PC data-interface 10 by datawire.
Syringe pump 7 is communicated with return tube 3 by injection tube 19, and syringe pump 7 signal ends are connected by the signal end of signaling line with controller 5.Syringe pump 7 is made up of additive storage tank, calibrated shot pump, electronic control module, fuel level in tank increment signal device, calibrated shot pump and additive storage tank are complementary, the output terminal of electronic control module output termination calibrated shot pump, input end connected tank oil level increment signal device, fuel level in tank increment signal Device Testing sample of signal end is positioned at additive storage tank.
Embodiment 2: on embodiment 1 basis, initiative regeneration diesel particulate filter regeneration method, back pressure sensor, temperature transducer is with detected back pressure signal, temperature signal transfers to controller, when back pressure pressure during greater than the force value that sets, controller instruction regenerating control device 11 control regenerative processes begin, diesel oil enters diesel fuel nozzle by fuel supply line and regenerating control device 11, in outlet pipe, spray into diesel fuel, fuel fume " oxidizing fire " heat release in oxidation catalytic converter (DOC) carrier of evaporation, make the temperature of silicon carbide wall-flow filter (DPF) import bring up to 400 ℃ or 650 ℃ rapidly, light the carbon ash of silicon carbide wall-flow filter (DPF) inner accumulated, regeneration begins to carry out, exhaust back pressure is along with the burning of carbon ash descends gradually, at this moment, controller detects back pressure pressure, the variation of temperature parameter, control emitted dose and discharge time are to guarantee the needed running parameter of regeneration, when back pressure is reduced to the numerical value of setting, stop to spray, along with burning away of carbon ash finished the primary recycling process, whole system forms a closed loop control system, guarantee to regenerate and reliably carry out completely, make extra fuel consumption minimum simultaneously.
The important technological parameters of the particle trapper that embodiment uses: the specification of the DPF of test is Φ 144mm * 254mm, volume: 4.1 liters, and channel density: 192cpsi (30 holes/cm
2) channel size: 1.52mm * 1.52mm, wall thickness: 0.3mm, partition average pore size: 10～12 μ m, porosity ratio: 42%.DPF material be recrystallization SiC, SiC content 〉=98%.
The maximum exhaust flow of test: 540m
3/ h, maximum ash loading amount: the back pressure when 8 grams per liters, the maximum air displacement of setting :≤15kPa, the back pressure≤5kPa after the regeneration, the fuel consumption that actual measurement regeneration increases :≤1%.
Carried out 1000 hours simulation tests, system does not have to be stopped up and the back pressure value that transfinites, and the test contaminant capture rate is shown in subordinate list:
Actual test DPF reduces the exhaust emission discharging table of comparisons
What need understand is: though the foregoing description is to the present invention's detailed text description of contrasting; but these text descriptions; it is text description to mentality of designing of the present invention; rather than to the restriction of mentality of designing of the present invention; any combination, increase or omission that does not exceed mentality of designing of the present invention all falls within the scope of protection of the present invention.
Claims (9)
1, a kind of independent initiative regeneration diesel particulate filter system, it comprises the storage battery to system's power supply, fuel tank is given the diesel engine fuel feeding by fuel supply line, diesel engine exhaust is communicated with Exhaust gas purifying device, return tube one end is communicated with diesel engine, the other end is communicated with fuel tank, it is characterized in that: oxidation catalyzer and particulate filter are housed in the Exhaust gas purifying device, with be provided with diesel fuel nozzle in the outlet pipe of Exhaust gas purifying device import joint and be communicated with fuel supply line by oil pipe and regenerating control device, Exhaust gas purifying device be respectively equipped with back pressure sensor and temperature transducer and back pressure sensor and temperature transducer respectively the signaling line by separately be connected with the signal end of controller.
2, independent initiative regeneration diesel particulate filter system according to claim 1, it is characterized in that: the signal output part of controller is connected with the signal input part of display board by signaling line.
3, independent initiative regeneration diesel particulate filter system according to claim 1, it is characterized in that: the controller power source input end is connected with power supply by lead.
4, independent initiative regeneration diesel particulate filter system according to claim 1, it is characterized in that: controller is connected with the PC data-interface by datawire.
5, independent initiative regeneration diesel particulate filter system according to claim 1, it is characterized in that: syringe pump is communicated with return tube by injection tube, and the syringe pump signal end is connected with the signal end of controller by signaling line.
6, independent initiative regeneration diesel particulate filter system according to claim 1, it is characterized in that: syringe pump is made up of additive storage tank, calibrated shot pump, electronic control module, fuel level in tank increment signal device, calibrated shot pump and additive storage tank are complementary, the output terminal of electronic control module output termination calibrated shot pump, input end connected tank oil level increment signal device, fuel level in tank increment signal Device Testing sample of signal end is positioned at additive storage tank.
7, independent initiative regeneration diesel particulate filter system according to claim 1, it is characterized in that: the regeneration control signal of controller outputs to regenerating control device, and regenerating control device connects fuel supply line and diesel fuel nozzle.
8, independent initiative regeneration diesel particulate filter system according to claim 7, it is characterized in that: regenerating control device is made of pressurizer, atomizer, metering mechanism and data processing circuit, metering mechanism measures the size of using oil mass according to the instruction of data processing circuit output, and is delivered to diesel fuel nozzle by oil pipe after pressurizer pressurization, atomizer atomizing.
9, a kind of initiative regeneration diesel particulate filter independence regeneration method, it is characterized in that: back pressure sensor, temperature transducer is with detected back pressure signal, temperature signal transfers to controller, when back pressure pressure during greater than the force value that sets, controller instruction regenerating control device 11 control regenerative processes begin, diesel oil enters diesel fuel nozzle by fuel supply line and regenerating control device 11, in outlet pipe, spray into diesel fuel, fuel fume " oxidizing fire " heat release in oxidation catalytic converter (DOC) carrier of evaporation, make the temperature of silicon carbide wall-flow filter (DPF) import bring up to 400 ℃ or 650 ℃ rapidly, light the carbon ash of silicon carbide wall-flow filter (DPF) inner accumulated, regeneration begins to carry out, exhaust back pressure is along with the burning of carbon ash descends gradually, at this moment, controller detects back pressure pressure, the variation of temperature parameter, control emitted dose and discharge time are to guarantee the needed running parameter of regeneration, when back pressure is reduced to the numerical value of setting, stop to spray, along with burning away of carbon ash finished the primary recycling process, whole system constitutes a closed loop control system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810062308A CN101519994A (en) | 2008-05-07 | 2008-05-07 | Independent active regeneration DPF (Diesel Particulate Filter) system and independent regeneration method |
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| CN200810062308A CN101519994A (en) | 2008-05-07 | 2008-05-07 | Independent active regeneration DPF (Diesel Particulate Filter) system and independent regeneration method |
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| CN101519994A true CN101519994A (en) | 2009-09-02 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374000A (en) * | 2010-08-10 | 2012-03-14 | 通用汽车环球科技运作有限责任公司 | Vehicle oxidation catalyst efficiency model for adaptive control and diagnostics |
| CN102654075A (en) * | 2011-03-03 | 2012-09-05 | 通用汽车环球科技运作有限责任公司 | Oxidation catalyst burn threshold adjustment to avoid quenching |
| CN105067496A (en) * | 2015-07-24 | 2015-11-18 | 凯龙高科技股份有限公司 | DPF carrier carbon loading amount test apparatus |
| CN108138616A (en) * | 2015-09-29 | 2018-06-08 | 开利公司 | Transport refrigeration system including refrigeration unit and diesel engine |
| CN108350777A (en) * | 2015-09-30 | 2018-07-31 | 庄信万丰股份有限公司 | Diesel particulate object filter |
| CN108397268A (en) * | 2018-02-24 | 2018-08-14 | 安徽江淮汽车集团股份有限公司 | A kind of exhaust initiative regeneration control system |
| CN109162791A (en) * | 2018-09-19 | 2019-01-08 | 北京机械设备研究所 | A kind of ready-package diesel vehicle exhaust gas purification and treatment device |
-
2008
- 2008-05-07 CN CN200810062308A patent/CN101519994A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374000A (en) * | 2010-08-10 | 2012-03-14 | 通用汽车环球科技运作有限责任公司 | Vehicle oxidation catalyst efficiency model for adaptive control and diagnostics |
| CN102374000B (en) * | 2010-08-10 | 2014-08-20 | 通用汽车环球科技运作有限责任公司 | Vehicle oxidation catalyst efficiency model for adaptive control and diagnostics |
| CN102654075A (en) * | 2011-03-03 | 2012-09-05 | 通用汽车环球科技运作有限责任公司 | Oxidation catalyst burn threshold adjustment to avoid quenching |
| CN105067496A (en) * | 2015-07-24 | 2015-11-18 | 凯龙高科技股份有限公司 | DPF carrier carbon loading amount test apparatus |
| CN108138616A (en) * | 2015-09-29 | 2018-06-08 | 开利公司 | Transport refrigeration system including refrigeration unit and diesel engine |
| US11053834B2 (en) | 2015-09-29 | 2021-07-06 | Carrier Corporation | Transportation refrigeration system comprising a refrigeration unit and a diesel engine |
| CN108350777A (en) * | 2015-09-30 | 2018-07-31 | 庄信万丰股份有限公司 | Diesel particulate object filter |
| CN108397268A (en) * | 2018-02-24 | 2018-08-14 | 安徽江淮汽车集团股份有限公司 | A kind of exhaust initiative regeneration control system |
| CN109162791A (en) * | 2018-09-19 | 2019-01-08 | 北京机械设备研究所 | A kind of ready-package diesel vehicle exhaust gas purification and treatment device |
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Open date: 20090902 |