CN109931126A - The regenerative system and regeneration method of a kind of grain catcher, grain catcher - Google Patents
The regenerative system and regeneration method of a kind of grain catcher, grain catcher Download PDFInfo
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- CN109931126A CN109931126A CN201910172321.2A CN201910172321A CN109931126A CN 109931126 A CN109931126 A CN 109931126A CN 201910172321 A CN201910172321 A CN 201910172321A CN 109931126 A CN109931126 A CN 109931126A
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- 238000011069 regeneration method Methods 0.000 title claims abstract description 40
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 73
- 239000013618 particulate matter Substances 0.000 claims abstract description 40
- 238000001914 filtration Methods 0.000 claims abstract description 27
- 230000008929 regeneration Effects 0.000 claims abstract description 26
- 230000002093 peripheral effect Effects 0.000 claims abstract description 13
- 238000003860 storage Methods 0.000 claims description 41
- 230000005611 electricity Effects 0.000 claims description 17
- 238000012545 processing Methods 0.000 claims description 13
- 238000004064 recycling Methods 0.000 claims description 11
- 238000012546 transfer Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 62
- 239000000295 fuel oil Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000006854 communication Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000000153 supplemental effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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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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Abstract
The present invention discloses a kind of grain catcher, the regenerative system and regeneration method of grain catcher, for hybrid vehicle, the grain catcher includes the first pressure sensor and second pressure sensor for measuring the first gas pressure value of air inlet and the second gas pressure value of gas outlet respectively, inside cavity is equipped with the resistance heating wire that particulate matter is lighted in heating, the high-tension current of brake power generating high-tension current or power battery that peripheral control unit controls hybrid vehicle according to the difference of first gas pressure value and second gas pressure value provides electric energy for resistance heating wire, heat and burn the particulate matter of filtering body trapping.The regenerative system and regeneration method of grain catcher use above-mentioned grain catcher, different regenerations can be selected to regenerate grain catcher according to particulate accumulation amount, reduce exhaust system backpressure, engine performance is advanced optimized, while extending the service life of grain catcher.
Description
Technical field
The present invention relates to field of automobile more particularly to a kind of grain catcher for hybrid vehicle,
The regenerative system and regeneration method of grain catcher.
Background technique
Energy crisis and environmental pollution are two big crises of the world today, develop new-energy automobile, exploitation cleaning engine,
Efficient after-treatment system is cooperated to have become the only way for solving two big crises.To cope with atmosphere polluting problem, China will be into one
The emission limit of step plus tight automobile exhaust pollutant, increases the measurement request to particulate matter quantity (PN) in tail gas, current
Engine system can no longer meet the requirement of the harshness for in-cylinder direct fuel-injection engine.To meet car tail
Particulate matter quantitative requirement in gas, the technology path that most of main engine plants take are to install grain catcher additional in exhaust system,
Grain trap is a kind of physical filter, usually using materials such as cordierite ceramic honeycomb carrier or silicon carbide as load
Body.
Grain catcher can capture the particle of 90% or more quantity in vehicle exhaust, and captured particulate matter was attached to
In filter body, with the continuous accumulation of particulate matter, the exhaust resistance of engine can be gradually increased, when grain catcher is blocked seriously
When, engine exhaust system back pressure can steeply rise, and engine performance can also deteriorate.
Summary of the invention
The purpose of the present invention is to provide a kind of regeneration of grain catcher, grain catcher for hybrid vehicle
System and regeneration method can select different regenerations according to particulate accumulation amount, reduce exhaust system backpressure, further
Optimize engine performance.
To achieve the goals above, the invention provides the following technical scheme:
A kind of grain catcher in the engine exhaust system of hybrid vehicle, and is set to three-way catalyst
Later, the grain catcher includes the air inlet, cavity and gas outlet successively penetrated through；Wherein,
The air inlet is equipped with first pressure sensor, and the gas outlet is equipped with second pressure sensor, in the cavity
Portion is equipped with the filtering body for filtering particulate matter in vehicle exhaust, is additionally provided with resistance between the filtering body and the air inlet and adds
Heated filament；The first pressure sensor, second pressure sensor and the resistance heating wire are connected respectively to peripheral control unit simultaneously
By the control of the peripheral control unit；
The first pressure sensor is used to measure the first gas pressure value P 1 of the air inlet；The second pressure passes
Sensor is used to measure the second gas pressure value P 2 of the gas outlet；The peripheral control unit obtains the first gas pressure value
P1 and second gas pressure value P 2 calculate pressure difference value δ P, and control the resistance heating wire according to the pressure difference value δ P and pass through
The particulate matter is lighted in high-tension current heating.
Preferably, it is set on the cavity there are two forceful electric power interface, the forceful electric power interface internal is connected respectively to the resistance
The both ends of heater strip, outside are separately connected the anode and cathode of high-voltage electricity.
Preferably, temperature sensor and at least one air blower, the temperature sensor installation are additionally provided on the cavity
On cavity between the filtering body and the resistance heating wire, for detecting the intracorporal temperature of the chamber；The air blower
It is set to beside the air inlet, and the air blast wind direction of the air blower is consistent with the airintake direction of the air inlet.
A kind of regenerative system of grain catcher, including above-mentioned grain catcher, electronic control module, power battery pack and
Driving motor, the power battery pack brake electric energy for driving vehicle and recycling for storing high-voltage electricity, the driving motor,
The power battery pack and the driving motor are electrically connected with the resistance heating wire of the grain catcher respectively, the electronics
Control module includes pressure acquisition unit, the first computing unit and the judging unit of successively signal connection, wherein
The pressure acquisition unit is connected separately first pressure sensor and second pressure sensor, for obtaining respectively
Take the first gas pressure value P 1 of air inlet and the second gas pressure value P 2 of gas outlet；
First computing unit is used to calculate the gas pressure difference δ P=P1- of grain catcher air inlet and air outlet
P2；
The judging unit is connect with the power battery pack and the driving motor signal respectively, for according to the gas
Body pressure difference value δ P judges whether to generate igniting signal, and the power battery pack or the drive are controlled when generating igniting signal
Dynamic motor provides high-tension current for resistance heating wire.
Preferably, the electronic control module further include the first storage unit, the second computing unit, the second storage unit with
And processing unit, the input terminal of second computing unit are separately connected first computing unit, first storage unit
With the output end of the temperature sensor, the output end of second computing unit and second storage unit respectively with it is described
The input terminal of processing unit connects, and the output end of the processing unit connects the judging unit；
First storage unit most preferably lights Temperature Matching data, the pressure difference-for being pre-stored multiple groups pressure difference-
Most preferably lighting Temperature Matching data includes gas pressure difference δ P and corresponding best ignition temperature T1；
Second computing unit is used to transfer corresponding best ignition temperature T according to current gas pressure difference value δ P1, with
And it obtains from the temperature sensor as the temperature T in front cavity2, and calculate Current Temperatures value of delta T=T1-T2；
Second storage unit is used to be pre-stored multiple groups temperature difference-heated current matched data and multiple groups are currently warm
Degree-air blast currents match data, the temperature difference-heated current matched data include temperature gap δ T and corresponding heating
Current value, the Current Temperatures-air blast currents match data include the intracorporal temperature T of current chamber2With corresponding air blast electricity
Flow valuve；
The processing unit is used to transfer corresponding heated current value according to Current Temperatures value of delta T, and according to working as ante-chamber
Intracorporal temperature T2Corresponding air blast current value is transferred, and the heated current value and the air blast current value are exported to described
Judging unit.
Further, the electronic control module further includes third storage unit, the judging unit also with the third
Storage unit and the air blower are connected separately；
The third storage unit be used for be pre-stored the grain catcher need to carry out initiative regeneration pressure difference X1 and
The limit pressure difference value X2 of the necessary initiative regeneration of the grain catcher；
As δ P < X1, the judging unit does not generate igniting signal；
As X1≤δ P < X2, the judging unit generates igniting signal and the igniting signal is sent to the driving
Motor and the air blower；
As X2≤δ P, the judging unit generates igniting signal and the igniting signal is sent to the power battery
Packet and the air blower；
Wherein, the igniting signal includes the heated current value and the air blast current value, for controlling the driving
Motor/power battery pack is provided for resistance heating wire and is lighted with heated current value high-tension current heating of the same size
Particulate matter, and control the air blower and work according to the air blast current value.
Preferably, the regenerative system further includes power electronics modules, and the electronic control module further includes the 4th storage
Unit, the power electronics modules connect with the judging unit, the 4th storage unit and the driving motor signal respectively
It connects；
4th storage unit is pre-stored with multiple groups heated current-torque allocation proportion matched data, the heating electricity
Stream-torque allocation proportion matched data includes the mechanical braking and electric braking of heated current value and corresponding driving motor
Torque allocation proportion；
The power electronics modules are used to transfer the mechanical braking and electric braking of driving motor according to the heated current value
Torque allocation proportion control the driving motor, and the braking electric energy that the driving motor is recycled carries out AC-DC conversion.
Preferably, the regenerative system further includes junction box；Wherein,
The junction box includes the port of three interconnections, and the first port of the junction box is electrically connected to power electric
Chi Bao, second port are connected to the driving motor by the power electronics modules, and third port is connected to grain catcher
Resistance heating wire；The electric current of the power battery pack can flow to respectively power electronics modules by the junction box and resistance adds
Heated filament；The electric current of the braking electric energy of driving motor recycling by the junction box can flow to respectively the power battery pack with
The resistance heating wire.
Preferably, the regenerative system further includes low-voltage power supply module, and the low-voltage power supply module connects the electronics control
Molding block and air blower, and electric energy is provided for the electronic control module and the air blower.
A kind of regeneration method of grain catcher, comprising steps of
The second gas pressure value P 2 of S1, the first gas pressure value P 1 for obtaining grain catcher air inlet and gas outlet,
And calculate gas pressure difference δ P=P1-P2；
S2, corresponding best ignition temperature T is transferred according to current gas pressure difference value δ P1, obtain when the temperature in front cavity
Spend T2, and calculate Current Temperatures value of delta T=T1-T2；
Heated current value is transferred according to Current Temperatures value of delta T, and according to as the temperature T in front cavity2Transfer air blast electricity
Flow valuve, and the heated current value and the air blast current value are exported to judging unit；
S3, the pressure difference X1 for needing to carry out initiative regeneration according to the grain catcher, the grain catcher must be led
The regenerated limit pressure difference value X2 and gas pressure difference δ P is moved to judge whether to generate igniting signal:
As δ P < X1, the judging unit does not generate igniting signal；
As X1≤δ P < X2, the judging unit generates igniting signal and the igniting signal is sent to the driving
Motor and the air blower；
As X2≤δ P, the judging unit generates igniting signal and the igniting signal is sent to the power battery
Packet and the air blower；
Wherein, the igniting signal includes the heated current value and the air blast current value, for control driving motor/
Power battery pack provides size of current for resistance heating wire and particle is lighted in the consistent high-tension current heating of the heated current value
Object, and control the air blower and work according to the air blast current value.
Compared with prior art, a kind of grain catcher provided by the invention, the regenerative system of grain catcher and regeneration
Method has the advantages that
Grain catcher provided by the invention utilize first pressure sensor and second pressure sensor, can measure respectively into
The first gas pressure value P 1 of port and the second gas pressure value P 2 of gas outlet, grain catcher inside cavity are equipped with particulate matter
Filtering body and heating light the resistance heating wire of particulate matter, the resistance heating wire is high using the brake power generating of hybrid vehicle
The high-tension current of current voltage or power battery can effectively remove the particulate matter of filtering body trapping, also saving fuel oil and electric energy.
The regenerative system of grain catcher provided by the invention further includes electronics control in addition to comprising above-mentioned grain catcher
Molding block, power battery pack and driving motor, power battery pack are stored with high voltage electric energy, and driving motor can return braking electric energy
It receives, the electronic control module calculates the gas pressure difference δ P of grain catcher air inlet and air outlet, and according to gas pressure
Power value of delta P judges whether that generate the igniting signal control power battery pack or the driving motor provides for resistance heating wire
High-tension current realizes and selects different regenerations according to particulate accumulation amount, reduces exhaust system backpressure, advanced optimizes
Engine performance.
The present invention also provides a kind of regeneration method of grain catcher, which is applied to above-mentioned regenerative system,
It realizes and selects different regenerations according to particulate accumulation amount, reduce exhaust system backpressure, advanced optimized engine
Energy.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes a part of the invention, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of grain catcher in the embodiment of the present invention；
Fig. 2 is the regenerative system schematic diagram of grain catcher in the embodiment of the present invention；
Fig. 3 is the regeneration method schematic diagram of grain catcher in the embodiment of the present invention.
Appended drawing reference:
1- air inlet, 11- first pressure sensor；
2- cavity；21- filtering body；
22- resistance heating wire, 231- the first forceful electric power interface；
232- the second forceful electric power interface, 24- temperature sensor；
The first air blower of 251-, the second air blower of 252-；
The gas outlet 3-, 31- second pressure sensor；
4- three-way catalyst, 5- engine.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, implement below in conjunction with the present invention
Attached drawing in example, technical scheme in the embodiment of the invention is clearly and completely described.Obviously, described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel all other embodiment obtained without creative labor belongs to the model that the present invention protects
It encloses.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " connection " should be done
Broadly understood, for example, it may be connected in series, be also possible to be connected in parallel or each unit in component connect one to one；It can
To be mechanical connection, it can be communication connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition
Solve the concrete meaning of above-mentioned term in the present invention.
Embodiment one
Referring to Fig. 1, a kind of grain catcher provided in this embodiment, the engine exhaust system for hybrid vehicle
It in system, and is set to after three-way catalyst 4, the tail gas generated to engine 5 is filtered processing, which includes
Air inlet 1, cavity 2 and the gas outlet 3 successively penetrated through.
Air inlet 1 is equipped with first pressure sensor 11, and gas outlet 3 is equipped with second pressure sensor 31, is equipped with inside cavity 2
For filtering the filtering body 21 of particulate matter in vehicle exhaust, resistance heating wire 22 is additionally provided between filtering body 21 and air inlet 1；The
One pressure sensor 11, second pressure sensor 31 and resistance heating wire 22 are direct or indirect respectively to be connected to external control
Device, and the direct or indirect control by peripheral control unit.
Specifically, first pressure sensor 11 is used to measure the first gas pressure value P 1 of air inlet 1；Second pressure sensing
Device 31 is used to measure the second gas pressure value P 2 of gas outlet 3；Peripheral control unit obtains first gas pressure value P 1 and the second gas
Whether body pressure value P 2 calculates pressure difference value δ P, and judge whether the particulate matter trapped in filtering body 21 according to pressure difference value δ P
Smooth gas discharge is influenced, and then controls resistance heating wire 22 and particulate matter is lighted by high-tension current heating, for example, utilizing mixing
The high-tension current of the brake power generating high-tension current of power vehicle or power battery gives resistance heating wire 22 to power, and heats and lights
Grain object, can effectively remove the particulate matter of the trapping of filtering body 21, moreover it is possible to save fuel oil and electric energy.
Preferably, cavity 2 is equipped with the first forceful electric power interface 231 and the second forceful electric power interface 232,231 He of the first forceful electric power interface
The inside of second forceful electric power interface 232 is connected respectively to the both ends of resistance heating wire 22, outside be separately connected high-voltage electricity anode and
Cathode, such as the first forceful electric power interface 231 is connected to the positive and dynamic of the brake power generating of hybrid power automobile drive electric motor recycling
Second forceful electric power interface 232 is connected to the cathode of the brake power generating of hybrid power automobile drive electric motor recycling by the anode of power battery
With the cathode of power battery, and then given using the brake power generating high-tension current of hybrid vehicle or the high-tension current of power battery
Resistance heating wire 22 powers, and heats and lights particulate matter.The mode for using forceful electric power interface to power for resistance heating wire 22, facilitates
The connection and disassembly of resistance heating wire 22 and power supply unit, and then when needing replacing grain catcher, facilitate granule capturing
The disassembly and installation of device.
Temperature sensor 24 is additionally provided on cavity, temperature sensor is installed on the cavity between filtering body and resistance heating wire
On, it is used for the intracorporal temperature of test chamber, temperature sensor 24 also connects peripheral control unit, and the control by peripheral control unit,
Peripheral control unit can be according to the size of the high-tension current of the intracorporal temperature control supply resistance heating wire 22 of chamber, to reach more preferable
Heating effect, while avoid the excessively high high-tension current of supply resistance heating wire 22 cause excessively high the initiations danger of cavity inner temperature or
Equipment damage.
Cavity is equipped at least one air blower, for example, referring to Fig. 1, being equipped with the first drum on cavity beside air inlet
Blower 251 and the second air blower 252, and the air blast wind direction of the first air blower 251 and the second air blower 252 and air inlet 1
Airintake direction is consistent, provides sufficient oxygen for the burning to particulate matter, keeps burning more abundant.
As it can be seen that grain catcher provided in an embodiment of the present invention utilizes first pressure sensor and second pressure sensor,
The first gas pressure value P 1 of air inlet and the second gas pressure value P 2 of gas outlet can be measured respectively, in grain catcher cavity
Portion is equipped with the filtering body 21 of particulate matter and heats the resistance heating wire 22 for lighting particulate matter, and peripheral control unit is according to first gas pressure
The difference of force value P1 and second gas pressure value P 2 controls the brake power generating high-tension current or power battery of hybrid vehicle
High-tension current is that resistance heating wire 22 provides electric energy, heats and burns the particulate matter of the trapping of filtering body 21, extend granule capturing
The service life of device, moreover it is possible to control the size of high-tension current according to temperature, save fuel oil and electric energy.
Embodiment two
Fig. 1 or Fig. 2 is please referred to, the embodiment of the invention discloses a kind of regenerative systems of grain catcher, it is necessary first to manage
It solves, the particle collected in the filtering body 21 of grain catcher must be removed in time, and the process that particulate matter is removed is exactly particle
The process of trap regeneration.
A kind of regenerative system of grain catcher provided in an embodiment of the present invention includes the particle provided in a upper embodiment
Trap further includes electronic control module, power battery pack and driving motor, wherein and power battery pack is used to store high-voltage electricity,
Driving motor for driving vehicle and recycling braking electric energy, power battery pack and driving motor respectively with the resistance of grain catcher
Heater strip 22 is electrically connected, and be can be power battery pack and driving motor and is passed through high-pressure connection line respectively directly and resistance heating wire
22 are electrically connected, and are also possible to power battery pack and driving motor and pass through high-pressure connection line respectively to be connected to forceful electric power interface, in turn
It is connected to resistance heating wire 22.Using the brake power generating high-tension current of hybrid vehicle or the high-tension current of power battery to electricity
It hinders heater strip 22 to power, heats and light particulate matter, can effectively remove the particulate matter of the trapping of filtering body 21, moreover it is possible to save fuel oil
And electric energy.
Electronic control module includes pressure acquisition unit, the first computing unit and the judging unit of successively signal connection, pressure
Power acquisition unit is also connect with first pressure sensor and second pressure sensor signal respectively, judging unit also respectively with power
Battery pack is connected with driving motor signal.It should be noted that the ECU that automobile can be directly used in electronic control module is realized,
Also it can according to need and the chip for being suitble to model selected to realize, suitable electronics can also be selected to different units as needed
Component is realized.
Pressure acquisition unit obtains the first gas pressure value P 1 of air inlet and the second gas pressure value P 2 of gas outlet；It
The first computing unit calculates the gas pressure difference δ P=P1-P2 of grain catcher air inlet and air outlet afterwards；Finally judgement is single
Member judges whether to generate igniting signal according to gas pressure difference δ P, and is generating igniting signal time control brake force battery pack or drive
Dynamic motor provides high-tension current for resistance heating wire.
Judging unit judges grain catcher according to the gas pressure difference δ P of the air inlet and air outlet of grain catcher
Whether need to regenerate, may be implemented to light particulate matter on demand, prevent energy waste；The braking of hybrid vehicle can also be utilized
The high-tension current of power generation high-tension current or power battery gives resistance heating wire 22 to power, and heats and light particulate matter, can be effective
Remove the particulate matter of the trapping of filtering body 21, moreover it is possible to save fuel oil and electric energy.
Please continue to refer to Fig. 1 or Fig. 2, in the regenerative system of grain catcher provided in an embodiment of the present invention, electronic control
Module further includes the first storage unit, the second computing unit, the second storage unit and processing unit, the second computing unit it is defeated
Enter the output end that end is separately connected the first computing unit, the first storage unit and temperature sensor, the second computing unit and second
The output end of storage unit is connect with the input terminal of processing unit respectively, and the output end connection judgment unit of processing unit needs
It is noted that above-mentioned connection procedure is signal connection, it can be unidirectional signal transmission, be also possible to two-way communication process.
It is pre-stored with multiple groups pressure difference-in first storage unit and most preferably lights Temperature Matching data, pressure difference-is most preferably lighted
Temperature Matching data include gas pressure difference δ P and corresponding best ignition temperature T1, wherein best ignition temperature T1For
For a quantity of particulate matter trapped in filtering body 21 under current gas pressure difference value δ P, heat required for lighting most
Good ignition temperature.
Second computing unit is transferred from the first storage unit according to current gas pressure difference value δ P and corresponding is most preferably lighted
Temperature T1, while obtaining from temperature sensor as the temperature T in front cavity2, and calculate Current Temperatures value of delta T=T1-T2。
Multiple groups temperature difference-heated current matched data and multiple groups Current Temperatures-drum are pre-stored in second storage unit
Wind-powered electricity generation stream matched data, temperature difference-heated current matched data include temperature gap δ T and corresponding heated current value, when
Preceding temperature-air blast currents match data include the intracorporal temperature T of current chamber2With corresponding air blast current value；Processing unit
According to the Current Temperatures value of delta T obtained from the second computing unit, corresponding heated current is transferred from the second storage unit
Value, while according to from being obtained in the second computing unit as the temperature T in front cavity2, correspondence is transferred from the second storage unit
Air blast current value, and heated current value and air blast current value are exported to judging unit, are lighted as what judging unit generated
Supplemental characteristic in signal.
It should be noted that combine actual working environment, the determination of air blast current value may can also with engine whether
Work, environment temperature, many factors such as cavity temperature of grain catcher are related, thus by as the temperature T in front cavity2It adjusts
The mode for taking air blast current value is only specific embodiment that the embodiment of the present invention is enumerated, but protection scope of the present invention not office
Be limited to this, anyone skilled in the art in the technical scope disclosed by the present invention, can readily occur in by with hair
Whether motivation work, the cavity temperature of environment temperature, grain catcher etc. is changed, replaces or combines, as air blast electric current
The judgement parameter of value, should be covered by the protection scope of the present invention.
Preferably, please continue to refer to Fig. 1 or Fig. 2, in the regenerative system of grain catcher provided in an embodiment of the present invention, electricity
Sub- control module further includes third storage unit, and the air blower of third storage unit and grain catcher is single with judgement respectively
First signal connection.
Pressure difference X1 and granule capturing that grain catcher needs to carry out initiative regeneration are pre-stored in third storage unit
The limit pressure difference value X2 of the necessary initiative regeneration of device；Judging unit obtains trap from third storage unit and needs to carry out initiative regeneration
Pressure difference X1 and grain catcher must initiative regeneration limit pressure difference value X2, and according to the air inlet of grain catcher and go out
The gas pressure difference δ P of port, judges whether grain catcher needs to regenerate, and specific multilevel iudge is crossed referred to as:
As δ P < X1, judging unit does not generate igniting signal.
As X1≤δ P < X2, judging unit generates igniting signal and igniting signal is sent to driving motor and air blower.
As X2≤δ P, judging unit generates igniting signal and igniting signal is sent to power battery pack and air blower.
Wherein, igniting signal includes heated current value and air blast current value, is for controlling driving motor/power battery pack
Resistance heating wire 22, which provides, lights particulate matter with the high-tension current heating of the same size of heated current value, while controlling air blower and pressing
It works according to air blast current value, and then controls the heating speed of resistance heating wire 22 and the air force of air blower, make filtering body
21 particulate matters trapped obtain better combustion efficiency.
Judging unit is by by the gas pressure difference δ P of the air inlet and air outlet of grain catcher and preset trapping
The pressure difference X1 and grain catcher that device needs to carry out initiative regeneration must the limit pressure difference value X2 of initiative regeneration be compared, sentence
Whether the quantity for the particulate matter that disconnected grain catcher filtering body 21 traps needs to remove, that is, judges whether grain catcher needs
Regeneration, may be implemented to light particulate matter by actual demand, prevents energy waste, moreover it is possible to further according to specific gas
Body pressure difference value δ P judges that providing high-tension current using driving motor or power battery pack as resistance heating wire 22 lights
Grain object, realizing by actual demand is that resistance heating wire 22 distributes power supply unit, maximally utilizes the energy, also extends
The service life of grain catcher.
Please continue to refer to Fig. 1 or Fig. 2, the regenerative system of grain catcher provided in an embodiment of the present invention further includes power electricity
Submodule, electronic control module further include the 4th storage unit, power electronics modules respectively with judging unit, the 4th storage unit
It is connected with driving motor signal.
Multiple groups heated current-torque allocation proportion matched data is pre-stored in 4th storage unit, which turns
Square allocation proportion matched data includes the mechanical braking of heated current value and corresponding driving motor and turning for electric braking
Square allocation proportion.Power electronics modules are set between judging unit and driving motor, are lighted according to what judging unit sended over
Heated current value in signal transfers the torque point of the mechanical braking and electric braking of corresponding driving motor from the 4th memory
With ratio, and controls driving motor and braked according to torque distribution, and the braking electric energy that driving motor recycles is handed over
Particulate matter is heated and lighted to output to resistance heating wire 22 after direct current conversion, meanwhile, heated current value control according to specific needs
Driving motor processed is braked according to certain torque distribution, can be further in the premise for the fuel efficiency effect for ensuring particulate matter
Under maximally utilize the energy.
Preferably, the regenerative system of grain catcher provided in an embodiment of the present invention further includes junction box, the junction box packet
The port of three interconnections is included, the first port of junction box is electrically connected to power battery pack, and second port passes through power electricity
Submodule is connected to driving motor, and third port is connected to the resistance heating wire of grain catcher；The electric current of power battery pack is logical
Power electronics modules and resistance heating wire can be flowed to respectively by crossing junction box；The electric current of the braking electric energy of driving motor recycling is by dividing
Wire box can flow to power battery pack and resistance heating wire respectively.Junction box is set up, and is provided for the recycling and utilization of high-tension current
Convenience, it is contemplated that the frequency of vehicle braking is higher, and brake power generating high current is utilized to carry out the chance that resistance heating wire 22 heats
More, engine exhaust back pressure can be kept low for a long time, and then engine efficiency and performance can be improved, meanwhile, also
The braking electrical energy transportation that driving motor recycles can be stored into power battery pack, realize maximally utilizing for energy.
If particulate matter cumulant has reached the degree that must be lighted, lucky vehicle does not have damped condition (such as vehicle long-time for a long time
Run high speed), then resistance heating wire 22 is carried out using the high-tension current of power battery pack heat, to complete the burning of particulate matter,
That is the regeneration of grain catcher.
Regenerative system provided in an embodiment of the present invention further includes low-voltage power supply module, low-voltage power supply module connection electronic control
Module and air blower, and electric energy, such as the electric energy of 12V are provided for electronic control module and air blower.In addition, air blower packet
It includes gear and adjusts unit, the gear of air blower adjusts the judging unit that unit is connected to electronic control module, when gear adjusts list
After member receives the air blast current value that judging unit sends over, the side such as resistor coding is realized by control built-in potential device
Formula, regulation air blower works according to air blast current value, and then controls the air force of air blower, traps filtering body 21
Particulate matter obtains better combustion efficiency.
In the regenerative system of grain catcher provided by the invention, power battery pack is stored with high voltage electric energy, driving motor
Braking electric energy recycling, electronic control module can be calculated into the gas pressure difference δ P of grain catcher air inlet and air outlet,
And judge whether that generating igniting signal controls power battery pack or driving motor as resistance heating wire according to gas pressure difference δ P
High-tension current is provided, realizes and selects different regenerations according to particulate accumulation amount, reduces exhaust system backpressure, further
Optimize engine performance.
Embodiment three
Referring to Fig. 3, the embodiment of the invention provides a kind of regeneration methods of grain catcher, comprising steps of
The second gas pressure value P 2 of S1, the first gas pressure value P 1 for obtaining grain catcher air inlet and gas outlet,
And calculate gas pressure difference δ P=P1-P2.
S2, corresponding best ignition temperature T is transferred according to current gas pressure difference value δ P1, obtain when the temperature in front cavity
Spend T2, and calculate Current Temperatures value of delta T=T1-T2。
Heated current value is transferred according to Current Temperatures value of delta T, and according to as the temperature T in front cavity2Transfer air blast electricity
Flow valuve, and heated current value and air blast current value are exported to judging unit.
The necessary initiative regeneration of S3, the pressure difference X1 for needing to carry out initiative regeneration according to grain catcher, grain catcher
Limit pressure difference value X2 and gas pressure difference δ P judges whether to generate igniting signal:
As δ P < X1, judging unit does not generate igniting signal.
As X1≤δ P < X2, judging unit generates igniting signal and igniting signal is sent to driving motor and air blower.
As X2≤δ P, judging unit generates igniting signal and igniting signal is sent to power battery pack and air blower.
Wherein, igniting signal includes heated current value and air blast current value, is for controlling driving motor/power battery pack
Resistance heating wire provides size of current and particulate matter is lighted in the consistent high-tension current heating of heated current value, and controls air blower and press
It works according to air blast current value.
It should be noted that the regeneration method of grain catcher provided in an embodiment of the present invention, specific step can be handed over
Sequence is changed, for example, S2 and S3 exchange sequence are first carried out S3, first judges whether to generate igniting signal, and judge generation
Igniting signal is sent to driving motor or power battery pack, then executes S2, specific to calculate heated current value and air blast current value
The supplemental characteristic of equal igniting signals, and can achieve identical technical effect.
The regeneration method of grain catcher provided in an embodiment of the present invention executes two different according to particulate accumulation degree
Regeneration strategy carries out heating regeneration to grain catcher using the brake power generating high current of driving motor recycling, or utilizes
Power battery electric current carries out heating regeneration to grain catcher, reduces exhaust system backpressure, optimizes engine performance.
In the description of above embodiment, particular features, structures, materials, or characteristics can be at any one or more
It can be combined in any suitable manner in a embodiment or example.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of grain catcher, in the engine exhaust system of hybrid vehicle, and be set to three-way catalyst it
Afterwards, which is characterized in that the grain catcher includes the air inlet, cavity and gas outlet successively penetrated through；Wherein,
The air inlet is equipped with first pressure sensor, and the gas outlet is equipped with second pressure sensor, and the inside cavity is set
There is the filtering body for filtering particulate matter in vehicle exhaust, is additionally provided with resistance heating between the filtering body and the air inlet
Silk；The first pressure sensor, second pressure sensor and the resistance heating wire be connected respectively to peripheral control unit and by
The control of the peripheral control unit；
The first pressure sensor is used to measure the first gas pressure value P 1 of the air inlet；The second pressure sensor
For measuring the second gas pressure value P 2 of the gas outlet；The peripheral control unit obtains 1 He of first gas pressure value P
Second gas pressure value P 2 calculates pressure difference value δ P, and controls the resistance heating wire according to the pressure difference value δ P and pass through high pressure
The particulate matter is lighted in electric current heating.
2. according to right want 1 described in grain catcher, which is characterized in that set on the cavity there are two forceful electric power interface, it is described
Forceful electric power interface internal is connected respectively to the both ends of the resistance heating wire, and outside is separately connected the anode and cathode of high-voltage electricity.
3. grain catcher according to claim 1, which is characterized in that be additionally provided with temperature sensor and extremely on the cavity
A few air blower, the temperature sensor are installed on the cavity between the filtering body and the resistance heating wire, are used for
Detect the intracorporal temperature of the chamber；The air blower is set to beside the air inlet, and the air blast wind direction of the air blower
It is consistent with the airintake direction of the air inlet.
4. a kind of regenerative system of grain catcher, which is characterized in that including any claim in the claims 1~3
The grain catcher, the regenerative system further include electronic control module, power battery pack and driving motor, the power
Battery pack in storage high-voltage electricity, the driving motor for drive vehicle and recycling braking electric energy, the power battery pack and
The driving motor is electrically connected with the resistance heating wire of the grain catcher respectively, and the electronic control module includes successively
Pressure acquisition unit, the first computing unit and the judging unit of signal connection, wherein
The pressure acquisition unit is connected separately first pressure sensor and second pressure sensor, for obtain respectively into
The first gas pressure value P 1 of port and the second gas pressure value P 2 of gas outlet；
First computing unit is used to calculate the gas pressure difference δ P=P1-P2 of grain catcher air inlet and air outlet；
The judging unit is connect with the power battery pack and the driving motor signal respectively, for according to the gas pressure
Power value of delta P judges whether to generate igniting signal, and the power battery pack or driving electricity are controlled when generating igniting signal
Machine provides high-tension current for resistance heating wire.
5. the regenerative system of grain catcher according to claim 4, which is characterized in that the electronic control module also wraps
Include the first storage unit, the second computing unit, the second storage unit and processing unit, the input terminal of second computing unit
It is separately connected the output end of first computing unit, first storage unit and the temperature sensor, second meter
The output end for calculating unit and second storage unit is connect with the input terminal of the processing unit respectively, the processing unit
Output end connects the judging unit；
First storage unit most preferably lights Temperature Matching data for being pre-stored multiple groups pressure difference-, and the pressure difference-is best
Ignition temperature matched data includes gas pressure difference δ P and corresponding best ignition temperature T1；
Second computing unit is used to transfer corresponding best ignition temperature T according to current gas pressure difference value δ P1, Yi Jicong
The temperature sensor is obtained as the temperature T in front cavity2, and calculate Current Temperatures value of delta T=T1-T2；
Second storage unit is for being pre-stored multiple groups temperature difference-heated current matched data and multiple groups Current Temperatures-drum
Wind-powered electricity generation stream matched data, the temperature difference-heated current matched data include temperature gap δ T and corresponding heated current
Value, the Current Temperatures-air blast currents match data include the intracorporal temperature T of current chamber2With corresponding air blast current value；
The processing unit is used to transfer corresponding heated current value according to Current Temperatures value of delta T, and according to when in front cavity
Temperature T2Corresponding air blast current value is transferred, and the heated current value and the air blast current value are exported to the judgement
Unit.
6. the regenerative system of grain catcher according to claim 5, which is characterized in that the electronic control module also wraps
Third storage unit is included, the judging unit is also connected separately with the third storage unit and the air blower；
The third storage unit is used to be pre-stored the grain catcher and needs to carry out the pressure difference X1 of initiative regeneration and described
The limit pressure difference value X2 of the necessary initiative regeneration of grain catcher；
As δ P < X1, the judging unit does not generate igniting signal；
As X1≤δ P < X2, the judging unit generates igniting signal and the igniting signal is sent to the driving motor
With the air blower；
As X2≤δ P, the judging unit generate igniting signal and by the igniting signal be sent to the power battery pack and
The air blower；
Wherein, the igniting signal includes the heated current value and the air blast current value, for control the driving motor/
The power battery pack provides for resistance heating wire and lights particle with heated current value high-tension current heating of the same size
Object, and control the air blower and work according to the air blast current value.
7. the regenerative system of grain catcher according to claim 6, which is characterized in that the regenerative system further includes function
Rate electronic module, the electronic control module further include the 4th storage unit, the power electronics modules respectively with the judgement
Unit, the 4th storage unit are connected with the driving motor signal；
4th storage unit is pre-stored with multiple groups heated current-torque allocation proportion matched data, and the heated current-turns
Square allocation proportion matched data includes the mechanical braking of heated current value and corresponding driving motor and turning for electric braking
Square allocation proportion；
The power electronics modules are used to transfer the mechanical braking of driving motor and turning for electric braking according to the heated current value
Square allocation proportion controls the driving motor, and the braking electric energy that the driving motor is recycled carries out AC-DC conversion.
8. the regenerative system of grain catcher according to claim 7, which is characterized in that the regenerative system further includes point
Wire box；Wherein,
The junction box includes the port of three interconnections, and the first port of the junction box is electrically connected to power battery
Packet, second port are connected to the driving motor by the power electronics modules, and third port is connected to grain catcher
Resistance heating wire；The electric current of the power battery pack can flow to power electronics modules and resistance heating by the junction box respectively
Silk；The electric current of the braking electric energy of the driving motor recycling can flow to the power battery pack and institute by the junction box respectively
State resistance heating wire.
9. the regenerative system of grain catcher according to claim 4, which is characterized in that the regenerative system further includes low
Power supply module is pressed, the low-voltage power supply module connects the electronic control module and air blower, and is the electronic control mould
Block and the air blower provide electric energy.
10. a kind of regeneration method of grain catcher, which is characterized in that comprising steps of
The second gas pressure value P 2 of S1, the first gas pressure value P 1 for obtaining grain catcher air inlet and gas outlet, and count
Calculate gas pressure difference δ P=P1-P2；
S2, corresponding best ignition temperature T is transferred according to current gas pressure difference value δ P1, obtain as the temperature T in front cavity2,
And calculate Current Temperatures value of delta T=T1-T2；
Heated current value is transferred according to Current Temperatures value of delta T, and according to as the temperature T in front cavity2Air blast current value is transferred,
And the heated current value and the air blast current value are exported to judging unit；
S3, the pressure difference X1 for needing to carry out initiative regeneration according to the grain catcher, the grain catcher must actively again
The raw limit pressure difference value X2 and gas pressure difference δ P judges whether to generate igniting signal:
As δ P < X1, the judging unit does not generate igniting signal；
As X1≤δ P < X2, the judging unit generates igniting signal and the igniting signal is sent to the driving motor
With the air blower；
As X2≤δ P, the judging unit generate igniting signal and by the igniting signal be sent to the power battery pack and
The air blower；
Wherein, the igniting signal includes the heated current value and the air blast current value, for controlling driving motor/power
Battery pack provides size of current for resistance heating wire and particulate matter is lighted in the consistent high-tension current heating of the heated current value, and
The air blower is controlled to work according to the air blast current value.
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| CN113847122A (en) * | 2021-09-22 | 2021-12-28 | 奇瑞汽车股份有限公司 | GPF regeneration control method and device for automobile and computer storage medium |
| CN116498418A (en) * | 2023-03-22 | 2023-07-28 | 盐城工学院 | DPF regeneration device of light diesel vehicle |
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