CN113356966B - Automobile exhaust particle processor and exhaust treatment device - Google Patents
Automobile exhaust particle processor and exhaust treatment device Download PDFInfo
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- CN113356966B CN113356966B CN202110672556.5A CN202110672556A CN113356966B CN 113356966 B CN113356966 B CN 113356966B CN 202110672556 A CN202110672556 A CN 202110672556A CN 113356966 B CN113356966 B CN 113356966B
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- exhaust gas
- exhaust
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/01—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust by means of electric or electrostatic separators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/04—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric, e.g. electrostatic, device other than a heater
Abstract
The present disclosure provides an automobile exhaust particle processor, comprising a plurality of capturing units, wherein any capturing unit comprises a capturing flow channel and a plurality of groups of electrode groups which are arranged inside the capturing unit; the catching runner is provided with an air inlet and an air outlet; any group of electrode groups comprises an anode unit and a cathode unit which are mutually insulated, and the anode unit and the cathode unit in the same group of electrode groups are matched and arranged at preset positions of the capturing flow channel. The automobile exhaust particle processor ionizes gas by using a strong electric field to generate positive and negative charges for charging particles, the particles are subjected to directional movement and form accumulation after being charged, the temperature of the particles is raised to be above a burning point by using the modes of discharge breakdown, short circuit and the like of an electrode group, and the particles are burnt and converted into gas emissions; the content of particulate matters in the automobile exhaust treated by the automobile exhaust particulate processor is greatly reduced. In addition, the present disclosure also provides an exhaust gas treatment device.
Description
Technical Field
The disclosure relates to the field of environmental protection, in particular to an automobile exhaust particle processor and an exhaust treatment device.
Background
GB18352 'limit value and measurement method for pollutant emission of light automobile (Chinese sixth stage)' is implemented in the national part of the area from the beginning of the year 7 of 2019, strict particulate matter (PM & PN) emission requirements are put forward for the light automobile, the particulate matter emission in the state of the six a is less than 4.5mg/km, the particle number PN is less than 6X 10/km, the particulate matter emission in the state of the six a is less than 3.0km, and the particle number PN is less than 6X 10/km.
At present, according to the technology of purifying exhaust particulate matters outside the engine, a GPF (Gasoline ParticulateFilter) gasoline engine particle catcher is adopted as a gasoline engine, and a DPF (Diesel ParticulateFilter) diesel engine particle catcher is adopted as a diesel engine. The filter material of the particle catcher is mainly cordierite or silicon carbide, the structure is mainly wall-flow type carrier, exhaust gas enters into the pore canal with an open inlet and a blocked outlet, and after being filtered by a porous wall surface, the exhaust gas is discharged from the adjacent pore canal with the blocked inlet and the developed outlet. As the filtered particulates accumulate, the filter holes of the trap become plugged, causing an increase in exhaust back pressure, resulting in deterioration of engine dynamics and fuel economy. The process of removing the trapped particulates in the trap is known as regeneration, and oxidation of the particulates requires a sufficiently high temperature, oxygen enrichment, and oxidation time, e.g., at an oxygen concentration of 5% and a discharge temperature of 650 c, for about 2 minutes, whereas actual oil extraction machine discharge temperatures are typically less than 500 c. In addition, the particles in the trap are too much to accumulate, and once the proper temperature and oxidizing atmosphere are met, the oxidation combustion is started, the temperature can reach more than 2000 ℃, and the damage to the trap is easy to cause. Therefore, the regeneration problem is technically difficult, the design and calibration period is long, and a temperature sensor and a pressure sensor are additionally arranged in an exhaust system for ensuring the performance of the engine and the regeneration controllability, so that the cost is high.
Disclosure of Invention
In order to overcome the defect of the external purification technology of the prior art, the present disclosure provides an automobile exhaust particle processor and an exhaust gas treatment device, wherein particles in the automobile exhaust are charged and directionally moved in an electrostatic field driving mode to generate accumulation of the particles, and the accumulated particles can be further burnt and consumed.
Correspondingly, the disclosure provides an automobile exhaust particle processor, which comprises a plurality of capturing units, wherein any capturing unit comprises a capturing runner and a plurality of electrode groups;
the capturing flow passage is provided with an air inlet and an air outlet;
any group of the electrode groups comprises an anode unit and a cathode unit which are mutually insulated, and the anode unit and the cathode unit in the same group of the electrode groups are matched and arranged at preset positions of the capturing flow channel.
In some embodiments, the capturing flow channel comprises a curved flow channel, and a group of the electrode groups is correspondingly arranged in the curved flow channel.
In some embodiments, the capturing flow channel is formed by a structural member, and the positive electrode unit and the negative electrode unit in the same group of the electrode groups are cooperatively arranged at preset positions of the structural member.
In some embodiments, the structural members include a first structural member and a second structural member, the first structural member and the second structural member are both in a U-shaped structure, and the first structural member and the second structural member are staggered to form the S-shaped capturing flow channel.
In some embodiments, the first structural member and the second structural member are electrode tabs, and the positive electrode units and the negative electrode units in the same group of electrode groups are disposed in the first structural member and the second structural member.
In some embodiments, the structural members include a first structural member and a second structural member;
the first structural member is provided with a plurality of first groove structures, the second structural member is provided with a plurality of corresponding first bulge structures, any one first bulge structure is positioned in one corresponding first groove structure, the opening of the groove structure is divided into a first inlet and a first outlet based on the first bulge structure, and the interior of the first groove structure is divided into a branch channel from the first inlet to the first outlet based on the first bulge structure;
the second structural member is provided with a plurality of second groove structures, the first structural member is provided with a plurality of corresponding second bulge structures, any one of the second bulge structures is positioned in one corresponding second groove structure, the opening of the second groove structure is divided into a second inlet and a second outlet based on the second bulge structures, and the interior of the second groove structure is divided into a branch flow passage from the second inlet to the second outlet based on the second bulge structures;
all the branch channels are combined to form the capturing channel.
In some embodiments, the first structural member and the second structural member are made of electrically conductive materials;
the first structural member is a positive electrode unit, and the second structural member is a negative electrode unit;
or the first structural member is a negative electrode unit, and the second structural member is a positive electrode unit.
In some embodiments, two adjacent capture units are separated based on an insulating material.
The present disclosure further provides an exhaust gas treatment device, including a power module and the automobile exhaust particle processor according to any one of the above schemes, the power module is electrically connected with an electrode group of the automobile exhaust particle processor, and is used for providing a positive voltage for an anode unit of the electrode group and providing a negative voltage for a cathode unit of the electrode group.
In some embodiments, the exhaust gas treatment device further comprises a controller electrically connected to the power module, the controller being configured to control the magnitude of the voltage input to the vehicle exhaust gas particulate processor by the power module.
In some embodiments, the controller is further configured to receive a parameter related to an engine output by the engine electronic injection system and control a magnitude of a voltage input by the power module to the vehicle exhaust particulate processor based on the parameter related.
In some embodiments, the related parameter includes a rotational speed of the engine, and the controller is configured to determine an exhaust flow rate of the engine according to the rotational speed of the engine, and further control a magnitude of a voltage input to the vehicle exhaust gas particulate processor by the power module according to the exhaust flow rate.
In some embodiments, the related parameter further includes a load factor of the engine, and the controller is configured to determine an exhaust flow rate of the engine according to a rotational speed of the engine and the load factor of the engine, and further control a magnitude of a voltage input to the automobile exhaust gas particulate processor by the power supply module according to the exhaust flow rate.
In some embodiments, the related parameter includes an exhaust temperature of the engine, and the controller is configured to correct the exhaust flow according to the exhaust temperature after determining the exhaust flow of the engine, so as to obtain a corrected exhaust flow;
the controller is used for controlling the voltage input to the automobile exhaust particle processor by the power supply module according to the corrected exhaust flow.
In some embodiments, the related parameter includes an air-fuel ratio of the engine, and the controller is configured to determine an exhaust flow rate of the engine, determine a control voltage value according to the exhaust flow rate, and further correct the control voltage value according to the air-fuel ratio to obtain a corrected control voltage value;
the controller is used for controlling the voltage input to the automobile exhaust particle processor by the power supply module according to the corrected control voltage value.
In some embodiments, the power module includes an inverter having an input, an output, and a control; the input end is used for being connected with an automobile end power supply, the output end is used for being connected with an electrode group of the automobile exhaust particle processor, and the control end is connected with the controller.
In summary, the present disclosure provides an automobile exhaust particle processor and an exhaust gas treatment device, in the automobile exhaust particle processor, an electrode set is disposed on a capturing flow channel, a strong electric field of the electrode set is utilized to ionize gas to generate positive and negative charges for charging particles, the particles are charged to generate directional movement and form accumulation, and the discharge breakdown and short circuit of the electrode set are utilized to raise the temperature of the particles to above a burning point, so that the particles are combusted and converted into gas emissions; the content of the particles in the automobile exhaust treated by the automobile exhaust particle processor is greatly reduced, the harsh emission requirements can be met, and the automobile exhaust particle processor has good environmental protection; correspondingly, the tail gas treatment device can adjust the supply voltage of the automobile tail gas particle processor according to the emission condition of automobile tail gas, thereby achieving the balance between energy consumption and functions and having excellent energy consumption ratio.
Drawings
Fig. 1 is a schematic diagram showing a cross-sectional structure of a capturing unit of an automobile exhaust particulate processor according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram showing a cross-sectional structure of a capturing unit of an automobile exhaust particulate processor according to a second embodiment of the present disclosure;
FIG. 3 is a schematic cross-sectional view of a trapping unit of an automobile exhaust gas particulate processor according to a third embodiment of the present disclosure;
FIG. 4 is a schematic diagram showing a three-dimensional structure of a capturing unit of an automobile exhaust particulate processor according to a fourth embodiment of the present disclosure;
FIG. 5 is a schematic diagram showing a three-dimensional structure of a capturing unit of an automobile exhaust particulate processor according to a fifth embodiment of the present disclosure;
FIG. 6 is a schematic diagram showing a front view of a capturing unit of an automobile exhaust particulate processor according to a fifth embodiment of the present disclosure;
fig. 7 shows a schematic structural diagram of an exhaust gas treatment device according to a sixth embodiment of the present disclosure;
fig. 8 shows a schematic diagram of a dc voltage control principle of a sixth embodiment of the present disclosure;
fig. 9 shows exhaust flow for various engine speeds at full engine load for the seventh embodiment of the present disclosure.
Detailed Description
The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments in this disclosure without inventive faculty, are intended to fall within the scope of this disclosure.
Embodiment one:
fig. 1 is a schematic block diagram showing a cross-sectional structure of a capturing unit of an automobile exhaust gas particulate processor according to an embodiment of the present disclosure.
The embodiment of the disclosure provides an automobile exhaust particle processor, which comprises a plurality of capturing units, wherein any capturing unit comprises a capturing runner 5 and a plurality of electrode groups.
Specifically, the capturing flow channel 5 has an air inlet and an air outlet, and the air flowing direction in the capturing flow channel 5 is from the air inlet to the air outlet.
Specifically, any one of the electrode groups includes a positive electrode unit 11 and a negative electrode unit 12 that are insulated from each other, and the positive electrode unit 11 and the negative electrode unit 12 in the same electrode group are cooperatively disposed at a predetermined position of the capturing flow channel 5. It should be noted that, the positive electrode unit 11 and the negative electrode unit 12 are mainly used to emphasize that polarities of the positive electrode unit 11 and the negative electrode unit 12 in the working state are opposite, in a specific implementation, the positive electrode unit 11 and the negative electrode unit 12 are generally made of conductive metal, and may have the same structure according to an implementation, so the positive electrode unit 11 and the negative electrode unit 12 are the same in terms of physical structure, and the signs of the positive electrode and the negative electrode are used to limit polarities of the positive electrode and the negative electrode in the working state.
Specifically, the exhaust gas particulate processor of the automobile is operated by each capturing unit, and specifically, the capturing units are operated by external devices to supply appropriate voltages to the positive electrode unit 11 and the negative electrode unit 12 respectively, and accordingly, a required electrostatic field is generated in the capturing flow channel 5 between the positive electrode unit 11 and the negative electrode unit 12. When automobile exhaust (exhaust flow containing PM and PN) enters the capturing flow passage 5 from the air inlet and passes between the positive electrode unit 11 and the negative electrode unit 12, under the action of an electrostatic field, gas in the automobile exhaust is ionized and corresponding electrons and positive ions are generated; the particles of the automobile exhaust can be correspondingly negatively charged when flowing through the electrostatic field, and move to the electrode unit with the polarity opposite to that of the negative charge under the action of coulomb force, and the particles are finally adsorbed on the corresponding electrode unit; under the continuous working condition, the particles are accumulated on the electrode units, the accumulation height of the particles is continuously increased, the distance between the positive electrode unit 11 and the negative electrode unit 12 is reduced, under the condition that the positive electrode unit 11 and the negative electrode unit 12 are electrified, the probability that discharge similar to tip discharge is generated between the positive electrode unit 11 and the negative electrode unit 12 is increased due to the increase of the accumulation height of the particles, and a large amount of heat is generated when the particles are broken down by an electric arc; when the accumulated particles are not broken down, the continuously accumulated particles eventually lead the positive electrode unit 11 and the negative electrode unit 12 to be conducted, so that the positive electrode unit and the negative electrode unit are short-circuited, the current flux of the accumulated particles is increased, and a large amount of heat is generated; after the particulate matters reach the ignition point, the particulate matters react with oxygen in the tail gas to burn, and gas emissions are generated, so that the particulate matter content in the discharged automobile tail gas is reduced; the automobile exhaust particle processor can further react and convert the particles in the automobile exhaust into gas emissions so as to meet the related emission requirements.
It should be noted that, the embodiments of the present disclosure are only used to illustrate the principle of the automobile exhaust particulate processor provided by the present disclosure, and the adopted structure is the simplest structure, and in the specific implementation, the structure can be adjusted according to the actual implementation situation.
Embodiment two:
fig. 2 is a schematic block diagram showing a cross-sectional structure of a capturing unit of an automobile exhaust gas particulate processor according to an embodiment of the present disclosure.
Specifically, on the basis of the first embodiment, the embodiment of the present disclosure improves the structure of the capturing flow channel 5 to provide a reference for specific implementation.
Specifically, the capturing flow channel 5 in the first embodiment is a direct current channel structure, and further, in the automotive exhaust particle processor in the embodiment of the disclosure, the capturing flow channel 5 includes a curved flow channel, and a group of electrode groups is correspondingly disposed in the curved flow channel. On the one hand, due to the inertia of the movement, the particles are more likely to collide with the side walls on both sides of the catching channel 5 in the curved channel, and on the other hand, the cross-sectional dimensions of the channel can be appropriately adjusted in the curved channel, so that the catching groove 4 is formed at the curved channel for accommodating the particles.
In the second embodiment, the complete angle of the curved flow path is 180 degrees, and the particles can be directly impacted and adsorbed on the corresponding electrode units through the curved flow path with a large angle.
In addition, based on the consideration of the actual pipeline connection condition, the directions of the air inlet and the air outlet of the automobile exhaust particle processor are opposite to better meet the actual use requirement; correspondingly, the arrangement of the bending flow channel can be adjusted according to the direction requirements of the air inlet and the air outlet, and the positions of the air inlet and the air outlet can be adjusted according to the actual implementation requirements so as to better meet the use requirements.
Further analysis was performed with respect to the capturing unit shown in fig. 2, specifically, the capturing flow channel 5 is formed by a structural member, and the positive electrode unit 11 and the negative electrode unit 12 in the same group of the electrode groups are cooperatively disposed at a preset position of the structural member.
In some embodiments, the structural member 10 includes a first structural member 21 and a second structural member 22; the first structural member 21 and the second structural member 22 are both in a U-shaped structure, and the first structural member 21 and the second structural member 22 are staggered to form the S-shaped capturing flow passage 5. The first structural member 21 has a plurality of first groove structures, the second structural member 22 has a corresponding plurality of first protrusion structures, any one of the first protrusion structures is located in a corresponding one of the first groove structures, an opening of the groove structure is divided into a first inlet and a first outlet based on the first protrusion structures, and an interior of the first groove structure is divided into a branch channel from the first inlet to the first outlet based on the first protrusion structures;
the second structural member 22 has a plurality of second groove structures, the first structural member 21 has a corresponding plurality of second protrusion structures, any one of the second protrusion structures is located in a corresponding one of the second groove structures, an opening of the second groove structure is divided into a second inlet and a second outlet based on the second protrusion structures, and an interior of the second groove structure is divided into a branch flow channel from the second inlet to the second outlet based on the second protrusion structures;
all the branch channels are combined to form the catching channel 5.
The capturing unit shown in fig. 2 uses the first groove structure, the first protrusion structure, the second groove structure and the second protrusion structure in a composite manner, and specifically, the protrusion structures may be used as components of the corresponding groove structures, that is, the protrusion structures may be used to form the corresponding groove structures; through the composition and the use of the structure, the required catching runner 5 can be conveniently formed, and the implementation difficulty is simplified. It should be noted that, with reference to the structure shown in fig. 2, the capturing flow channel 5 at any place is formed by matching a first structural member 21 and a second structural member 22, and correspondingly, an electrode group at a preset position of the branch flow channel is provided, a positive electrode unit in the electrode group is provided on the first structural member 21, and a negative electrode unit in the electrode group is provided on the second structural member 22; or the positive electrode unit of the electrode group is arranged on the second structural member 22, and the negative electrode unit of the electrode group is arranged on the first structural member 21.
Embodiment III:
fig. 3 is a schematic block diagram showing a cross-sectional structure of a capturing unit of an automobile exhaust gas particulate processor according to an embodiment of the present disclosure.
Further, the electrode units are arranged at discrete positions, and as the movement of the particles is similar to arc movement, useless accumulation can be generated if the particles are not accumulated on the electrode units, and the passing performance of the capturing flow channel 5 is affected, therefore, the manufacturing materials of the first structural member 21 and the second structural member 22 are conductive materials; the first structural member 21 is a positive electrode unit 11, and the second structural member 22 is a negative electrode unit 12; or the first structural member 21 is a negative electrode unit 12, and the second structural member 22 is a positive electrode unit 11.
For convenience of description and distinction from the foregoing embodiments, the first structural member 21 according to the embodiment of the present invention is the first electrode plate 1, and the second structural member 22 is the second electrode plate 2.
In the embodiment of the disclosure, the first structural member 21 and the second structural member 22 are integrally used as electrode units, and in a specific implementation, the first structural member 21 and the second structural member 22 can be directly made of metal materials so as to meet the electric field forming condition; accordingly, any position in the capturing flow passage 5 is provided with an electrostatic field, so that the movement of the particles can be driven, the accumulation of the particles at any position in the capturing flow passage 5 can be burnt and cleared, and the trafficability of the capturing flow passage 5 is not affected.
In particular, since the structural member 10 is made of a conductive material, in order to ensure that adjacent capturing units are not shorted, two adjacent capturing units are separated by the insulating material 3.
Embodiment four:
fig. 4 shows a schematic three-dimensional structure of a capturing unit of an automobile exhaust particulate processor according to an embodiment of the present disclosure. Based on the implementation principle of the third embodiment, the structural member shown in the schematic cross-sectional view shown in fig. 3 is directly stretched to obtain the capturing unit of the embodiment of the present disclosure. Specifically, the structural member 10 serving as the electrode unit is a plate-type structure, and in practical implementation, the structural member can be formed by bending and other processes, then the insulating material 3 is arranged on the surface of the structural member to obtain the capturing unit, and the required automobile exhaust particle processor is formed by an array of the capturing units.
Fifth embodiment:
fig. 5 shows a three-dimensional structural schematic diagram of a capturing unit of an automobile exhaust gas particulate processor according to an embodiment of the present disclosure, and fig. 6 shows a front structural schematic diagram of a capturing unit of an automobile exhaust gas particulate processor according to an embodiment of the present disclosure. Based on the implementation principle of the third embodiment, the capturing unit according to the embodiment of the present disclosure is obtained by rotating the structural member shown in the cross-sectional schematic diagram shown in fig. 3 along a certain axis. Specifically, the structural member 10 serving as the electrode unit has a barrel-shaped structure, and may be formed by a process such as stamping in practical implementation.
Example six:
fig. 7 shows a schematic structural diagram of an exhaust gas treatment device according to an embodiment of the present disclosure, and fig. 8 shows a schematic diagram of a dc voltage control principle according to an embodiment of the present disclosure.
Correspondingly, the present disclosure provides a tail gas treatment device, including power module and above automobile exhaust particle treater, power module with the electrode group electric connection of automobile exhaust particle treater.
Specifically, the power module is a module for supplying power to the automobile exhaust gas particulate processor, and because the automobile exhaust gas particulate processor is installed on an automobile, in some embodiments, an automobile power source is generally directly adopted as a power supply, and the power module converts energy provided by the automobile power source into voltage required by the automobile exhaust gas particulate processor. The converted voltage is used for an electrode group of an automobile exhaust particle processor to provide a positive voltage for a positive electrode unit of the electrode group and a negative voltage for a negative electrode unit of the electrode group. In addition, the automobile exhaust particle processor can be powered by setting an independent power supply.
Specifically, since the exhaust gas flow rate of the automobile is not constant, for better particulate matter removal, in some embodiments, the automobile exhaust gas particulate processor further includes a controller electrically connected to the power module. The controller is used for controlling the voltage input to the automobile exhaust particle processor by the power supply module.
In some embodiments, as shown in fig. 8, the power module includes an inverter having an input, an output, and a control; the input end is used for being connected with an automobile end power supply, the output end is used for being connected with an electrode group of the automobile exhaust particle processor, and the control end is connected with the controller.
Specifically, the inverter is used for receiving the voltage of the automobile end power supply, converting the received voltage into high-voltage power or pulse high-voltage power, and further providing the converted high-voltage power or pulse high-voltage power for the automobile exhaust particle processor. Meanwhile, the voltage input to the automobile exhaust particle processor by the inverter is controlled by the controller, so that the automobile exhaust particle processor captures particles based on proper voltage.
In one embodiment, the controller is further configured to receive a parameter related to an engine output by the engine electronic injection system and control a magnitude of a voltage input to the vehicle exhaust particulate processor by the power module according to the parameter related.
In particular implementations, the controller receives electronic injection system controller (ECU) signals, i.e., parameters related to the engine. The relevant parameters include information such as engine speed, engine load factor, air-fuel ratio a/F, exhaust gas temperature (exhaust manifold gas temperature), etc. And the controller controls the voltage input to the automobile exhaust particle processor by the power supply module according to the related parameters.
In an embodiment, the related parameter includes a rotation speed of the engine, and the controller is configured to determine an exhaust flow of the engine according to the rotation speed of the engine, and further control a voltage input to the exhaust gas particulate processor by the power module according to the exhaust flow.
In the exhaust gas treatment device provided by the embodiment of the disclosure, the controller is used for controlling the supply voltage of the automobile exhaust gas particulate processor, namely the supply voltage of the electrode group in the capturing unit. Specifically, the controller controls the voltage according to the real-time change condition of the gas tail gas. For example, when the engine load is low, the airflow rate of the automobile exhaust gas particulate processor is small, the pressure is small, the voltage demand is small, and the controller controls the supply voltage input to the automobile exhaust gas particulate processor to be small; when the engine load is high, the airflow flow is high, the pressure is high, the voltage requirement is high, and the controller controls the supply voltage input to the automobile exhaust particle processor to be high.
Specifically, the exhaust gas flow rate of an engine is substantially proportional to the rotational speed of the engine. As shown in fig. 9, the exhaust gas flow rates at different engine speeds at the full load of the engine. The air flow of the automobile exhaust particle processor can be determined through the exhaust flow, and then the voltage requirement condition of the automobile exhaust particle processor is determined. Therefore, the voltage input to the automobile exhaust particle processor can be controlled based on the rotating speed of the engine, and the actual requirement of the automobile exhaust particle processor is met.
In an embodiment, the related parameter further includes a load factor of the engine, and the controller is configured to determine an exhaust flow of the engine according to a rotational speed of the engine and the load factor of the engine, and further control a voltage input to the exhaust gas particulate processor by the power module according to the exhaust flow.
Specifically, the load factor of the engine refers to the power that can be generated by different fuel consumption amounts of the engine at a constant rotational speed. Under the same rotating speed condition, the exhaust flow of the engine is in direct proportion to the load coefficient of the engine. Therefore, the voltage input to the automobile exhaust particle processor can be further controlled, and the actual requirement of the automobile exhaust particle processor is met.
In an embodiment, the related parameter includes an exhaust temperature of the engine, and the controller is configured to correct the exhaust flow according to the exhaust temperature after determining the exhaust flow of the engine, so as to obtain a corrected exhaust flow; the controller is used for controlling the voltage input to the automobile exhaust particle processor by the power supply module according to the corrected exhaust flow. That is, after the exhaust flow rate is determined in the previous embodiment, the controller acquires the exhaust temperature again, and corrects the obtained exhaust flow rate according to the exhaust temperature. The method comprises the following steps: the volume of the same mass of gas is proportional to the temperature, so the gas flows at different temperatures are different, and this parameter is used to correct the gas flow.
Specifically, the volume of the same mass of gas is proportional to the temperature, so the exhaust gas flows at different temperatures are different, and the exhaust gas temperature is used to correct the exhaust gas flow of the engine. After the exhaust flow of the engine is determined by the processor based on the rotating speed of the engine and the load coefficient of the engine, the exhaust flow is corrected based on the exhaust temperature of the engine, and the corrected exhaust flow is more accurate, so that when the voltage input to the automobile exhaust particle processor by the power supply module is controlled according to the corrected exhaust flow, the voltage of the automobile exhaust particle processor meets the actual requirement.
In an embodiment, the related parameter includes an air-fuel ratio of the engine, and the controller is configured to determine an exhaust flow of the engine, determine a control voltage value according to the exhaust flow, and further correct the control voltage value according to the air-fuel ratio to obtain a corrected control voltage value; the controller is used for controlling the voltage input to the automobile exhaust particle processor by the power supply module according to the corrected control voltage value.
Specifically, the air-fuel ratio refers to the ratio of the mass between the intake air amount of the engine and the fuel, the air-fuel ratio of the gasoline engine is 14.7 under closed loop control, and the air-fuel ratio of the diesel engine is 14.3; when the air-fuel ratio is small, more particulate matter is generated. The air-fuel ratio is mainly used for correcting the voltage input to the automobile exhaust gas particulate processor. Therefore, after the controller determines the exhaust flow of the engine and determines the control voltage value according to the exhaust flow, the control voltage value is further corrected according to the air-fuel ratio, and the corrected control voltage value is more accurate. When the controller controls the voltage input to the automobile exhaust particle processor by the power supply module based on the corrected control voltage value, the voltage of the automobile exhaust particle processor meets the actual requirement.
In summary, the controller controls the operation of the inverter of the power module in real time through the processing and correction of various input parameters, so as to regulate the voltage of the output high-voltage current; the output voltage of the inverter can control the generation condition of the electrostatic field in the capturing unit, the magnitude of the electrostatic field influences the acting force of the electrode group on the particulate matters, the smaller the electrostatic field is, the more energy is saved under the precondition of guaranteeing the treatment of the particulate matters, and the balance of energy consumption and functions can be achieved through the arrangement of the voltage controller, so that the particulate matters in the automobile exhaust are treated more efficiently.
In summary, the embodiments of the present disclosure provide an automobile exhaust particle processor and an exhaust gas treatment device, where the automobile exhaust particle processor is provided with an electrode set on a capturing flow channel, so that positive and negative charges are generated by ionizing gas by using a strong electric field to charge particles, the particles are charged to generate directional motion and form accumulation, and the temperature of the particles is raised above a burning point by using discharge breakdown, short circuit and other modes of the electrode set, so that the particles are burned and converted into gas emissions; the content of the particles in the automobile exhaust treated by the automobile exhaust particle processor is greatly reduced, the harsh emission requirements can be met, and the automobile exhaust particle processor has good environmental protection; correspondingly, the tail gas treatment device can adjust the supply voltage of the automobile tail gas particle processor according to the emission condition of automobile tail gas, thereby achieving the balance between energy consumption and functions and having excellent energy consumption ratio.
The foregoing has described in detail the particulate automobile exhaust gas treatment device and the particulate automobile exhaust gas treatment device provided by the embodiments of the present disclosure, and specific examples have been applied herein to illustrate the principles and embodiments of the present disclosure, and the description of the foregoing examples is only for aiding in the understanding of the methods of the present disclosure and the core ideas thereof; meanwhile, as one of ordinary skill in the art will have variations in the detailed description and the application scope in light of the ideas of the present disclosure, the present disclosure should not be construed as being limited to the above description.
Claims (14)
1. The automobile exhaust particle processor is characterized by comprising a plurality of capturing units, wherein a plurality of capturing unit arrays form the automobile exhaust particle processor, two adjacent capturing units are separated based on insulating materials, and any capturing unit comprises a capturing runner and a plurality of electrode groups;
the capturing flow passages are provided with air inlets and air outlets, at least part of the capturing flow passages of the plurality of capturing units are not communicated with each other, the part of the capturing flow passages which are not communicated with each other enter air from the outside of the automobile exhaust gas particulate processor through one air inlet, and exhaust air to the outside of the automobile exhaust gas particulate processor through one air outlet;
any group of the electrode groups comprises an anode unit and a cathode unit which are mutually insulated, and the anode unit and the cathode unit in the same group of the electrode groups are matched and arranged at preset positions of the capturing flow channel;
and electrostatic fields are generated between the positive electrode unit and the negative electrode unit in the same group, particles are continuously accumulated on the positive electrode unit and the negative electrode unit under the action of the electrostatic fields and conducted with the positive electrode unit and the negative electrode unit, and the particles are burnt when the positive electrode unit and the negative electrode unit are conducted.
2. The vehicle exhaust particulate processor of claim 1, wherein the capture flow path includes a curved flow path having a corresponding set of the electrode sets disposed therein.
3. The exhaust gas particulate treatment device according to any one of claims 1 or 2, wherein the capturing flow path is formed of a structural member, and the positive electrode unit and the negative electrode unit in the same group of the electrode groups are disposed in cooperation at predetermined positions of the structural member.
4. The vehicle exhaust particulate treatment device of claim 3, wherein the structural members include a first structural member and a second structural member, the first structural member and the second structural member each being of a U-shaped configuration, the first structural member and the second structural member being staggered to form the S-shaped capture flow path.
5. The vehicle exhaust particulate processor of claim 4, wherein the first and second structural members are electrode tabs, and the positive electrode units in the same set of electrode sets are disposed in the first structural member and the negative electrode units are disposed in the second structural member.
6. The vehicle exhaust particulate processor of claim 4, wherein the first and second structural members are each made of an electrically conductive material;
the first structural member is a positive electrode unit, and the second structural member is a negative electrode unit;
or the first structural member is a negative electrode unit, and the second structural member is a positive electrode unit.
7. An exhaust gas treatment device, comprising a power module and the automobile exhaust gas particulate processor of any one of claims 1 to 6, wherein the power module is electrically connected to an electrode group of the automobile exhaust gas particulate processor, and is configured to provide a positive voltage to a positive electrode unit of the electrode group and a negative voltage to a negative electrode unit of the electrode group.
8. The exhaust gas treatment device of claim 7, further comprising a controller electrically connected to the power module, the controller configured to control a magnitude of a voltage input to the automotive exhaust gas particulate processor by the power module.
9. The exhaust gas treatment device of claim 8, wherein the controller is further configured to receive a parameter associated with an engine output from an engine electronic injection system and control a magnitude of a voltage input to the vehicle exhaust particulate processor by the power module based on the parameter associated.
10. The exhaust gas treatment device of claim 9, wherein the related parameter comprises a rotational speed of the engine, and the controller is configured to determine an exhaust flow rate of the engine based on the rotational speed of the engine to control a magnitude of a voltage input to the vehicle exhaust particulate processor by the power module based on the exhaust flow rate.
11. The exhaust gas treatment device according to claim 10, wherein the related parameter further comprises a load factor of the engine, and the controller is configured to determine an exhaust gas flow rate of the engine according to a rotational speed of the engine and the load factor of the engine, and further control a magnitude of a voltage input to the vehicle exhaust gas particulate processor by the power module according to the exhaust gas flow rate.
12. The exhaust gas treatment device according to claim 11, wherein the relevant parameter includes an exhaust gas temperature of the engine, and the controller is configured to correct the exhaust gas flow according to the exhaust gas temperature after determining the exhaust gas flow of the engine, to obtain a corrected exhaust gas flow;
the controller is used for controlling the voltage input to the automobile exhaust particle processor by the power supply module according to the corrected exhaust flow.
13. The exhaust gas treatment device according to claim 11, wherein the related parameter includes an air-fuel ratio of the engine, and the controller is configured to determine an exhaust flow rate of the engine and determine a control voltage value according to the exhaust flow rate, and further modify the control voltage value according to the air-fuel ratio to obtain a modified control voltage value;
the controller is used for controlling the voltage input to the automobile exhaust particle processor by the power supply module according to the corrected control voltage value.
14. The exhaust gas treatment device of claim 11, wherein the power module comprises an inverter having an input, an output, and a control; the input end is used for being connected with an automobile end power supply, the output end is used for being connected with an electrode group of the automobile exhaust particle processor, and the control end is connected with the controller.
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