CN112796855B - Vehicle exhaust particle complementary collection regeneration device and method and vehicle - Google Patents
Vehicle exhaust particle complementary collection regeneration device and method and vehicle Download PDFInfo
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- CN112796855B CN112796855B CN201911114027.2A CN201911114027A CN112796855B CN 112796855 B CN112796855 B CN 112796855B CN 201911114027 A CN201911114027 A CN 201911114027A CN 112796855 B CN112796855 B CN 112796855B
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- collector
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- particle collector
- particle
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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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/027—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy the devices using heat
- F01N5/025—Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy the devices using heat the device being thermoelectric generators
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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
- F01N9/00—Electrical control of exhaust gas treating apparatus
- F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
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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
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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
- F01N2240/16—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric heater, i.e. a resistance heater
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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
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/08—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for heavy duty applications, e.g. trucks, buses, tractors, locomotives
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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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
- F01N2900/1602—Temperature of exhaust gas apparatus
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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
- Y02T10/12—Improving ICE efficiencies
Abstract
The utility model provides a vehicle exhaust particle mends collection regenerating unit, the granule is mended the collector and is equipped with the heating net, the one end and the air supply of intake pipe are connected, the other end and the air inlet of granule benefit collector of intake pipe are connected, the one end and the gas outlet of granule benefit collector of first blast pipe are connected, be equipped with first exhaust valve in the first blast pipe, first blast pipe is equipped with first mounting hole, second mounting hole and third mounting hole, the both ends of second blast pipe respectively with first mounting hole, the second mounting hole is connected, the generator is connected on the second blast pipe, generator and heating net electric connection, be equipped with the fourth mounting hole in the intake pipe, the both ends of third blast pipe respectively with the third mounting hole, the fourth mounting hole is connected, be equipped with the second exhaust valve in the third blast pipe, the steerable first exhaust valve of control system, the second exhaust valve opens or closes. The vehicle exhaust particle complementary regeneration device can realize regeneration without additional energy. The invention also relates to a vehicle exhaust particle complementary collection regeneration method and a vehicle.
Description
Technical Field
The invention relates to the technical field of engine accessories, in particular to a vehicle exhaust particle complementary regeneration device and method and a vehicle.
Background
In order to meet the requirements of the national emission regulations, most of the current vehicle type emission systems use a particle collector to capture carbon particles which are not fully combusted, and the captured particles are burnt off in a heating particle collector. However, after the particles are captured, the temperature of the GPF needs to be raised through an additionally input power supply to burn off the particles, and meanwhile, if the GPF heating system is damaged or the GPF is damaged, the particles cannot be burned in time, so that dangers such as damage to an engine, flameout in the running process of a vehicle and the like caused by unsmooth airflow with too high pressure can be caused.
Disclosure of Invention
In view of the above, the present invention provides a vehicle exhaust particle complementary regeneration device, which can realize regeneration of a particle complementary device without additional energy, and can effectively avoid engine damage and sudden vehicle stop risks caused by failure of the particle complementary device.
A vehicle exhaust particle complement regeneration device comprises a particle complement device, an air inlet pipe, a first exhaust pipe, a second exhaust pipe, a third exhaust pipe, a generator and a control system, wherein a heating net is arranged in the particle complement device, one end of the air inlet pipe is connected with an air source, the other end of the air inlet pipe is connected with an air inlet of the particle complement device, one end of the first exhaust pipe is connected with an air outlet of the particle complement device, a first exhaust valve is arranged in the first exhaust pipe, the first exhaust pipe is sequentially provided with a first mounting hole, a second mounting hole and a third mounting hole along the length direction, the first exhaust valve is positioned in the first exhaust pipe between the first mounting hole and the second mounting hole, two ends of the second exhaust pipe are respectively connected with the first mounting hole and the second mounting hole, the generator is connected to the second exhaust pipe, the generator is electrically connected with the heating net, and the air inlet pipe is provided with a fourth mounting hole, the two ends of the third exhaust pipe are respectively connected with the third mounting hole and the fourth mounting hole, a second exhaust valve is arranged in the third exhaust pipe, the control system is respectively electrically connected with the first exhaust valve and the second exhaust valve, and the control system can control the first exhaust valve and the second exhaust valve to be opened or closed according to the temperature in the particle collector and the pressure of the air inlet.
In an embodiment of the present invention, the particle collector is provided with a pressure sensor and a temperature sensor, the pressure sensor is disposed near an air inlet of the particle collector, the temperature sensor is disposed in a middle portion of the particle collector, and the control system is electrically connected to the pressure sensor and the temperature sensor respectively.
In an embodiment of the invention, a binding post is arranged on the particle complementary collector, one end of the binding post is connected with the heating net, and the other end of the binding post is electrically connected with the generator through a wire.
In an embodiment of the present invention, the above vehicle exhaust particulate complementary regeneration apparatus further includes a catalyst through which an end of the first exhaust pipe remote from the particulate filter passes.
The invention also provides a vehicle exhaust particle complementary regeneration method, which utilizes the vehicle exhaust particle complementary regeneration device, and comprises the following steps:
s1, when the air inlet pressure of the particle collector is detected to be smaller than PL, controlling the first exhaust valve to be opened and controlling the second exhaust valve to be closed;
s2, when the pressure of the air inlet of the particle collector is detected to be larger than Pm, the first exhaust valve and the second exhaust valve are controlled to be closed, the air flow drives the generator to generate electricity through the second exhaust pipe, and the heating net heats and burns the particles collected by the particle collector;
wherein PL is the inlet pressure of the newly installed particle collector; pm is the air inlet pressure at which the particulate collector reaches maximum particulate trapping capacity.
In an embodiment of the present invention, the method further includes:
s21, burning particulate matter to raise the temperature of the particulate supplement, when detecting that the temperature in the particulate supplement is more than T0 and less than T1, or detecting that the air inlet pressure of the particulate supplement is less than PL, executing S1;
wherein T0 is the light-off temperature of the particulate collector; t1 is the upper temperature limit that the particulate collector can withstand.
In an embodiment of the present invention, the method further includes:
s22, burning the particulate matter to raise the temperature of the particulate collector, and when detecting that the temperature in the particulate collector is more than T0 and less than T1 or detecting that the air inlet pressure of the particulate collector is more than Pm, executing S1, and after a preset time T1:
performing S2 to S21 when the temperature within the particulate collector is detected to be less than T2;
performing S22 when detecting that the temperature within the particulate collector is greater than T0;
wherein T2 is the ambient temperature at which the particle collector is not heated; t1 is the time when the particle collector burns particles when power is not generated.
In an embodiment of the present invention, the method further includes:
s23, burning the particulate matter to raise the temperature of the particle collector, and when the temperature in the particle collector is detected to be less than T2, executing S2 to S22;
s24, when the temperature in the particle collector is detected to be more than T1, S1 is executed, and when the temperature is more than T0 and less than T1, S2 to S22 are executed.
In an embodiment of the present invention, the method further includes:
s3, when the power of the vehicle engine is decreased and increased and the pressure of the air inlet of the particle collector is detected to be larger than Pu, controlling the first exhaust valve and the second exhaust valve to be opened, driving the generator to generate power by the airflow through the second exhaust pipe, heating and burning the particles collected by the particle collector by the heating net, and after a preset time t 2:
s31, burning the particulate matter to increase the temperature of the particulate collector, and controlling the second exhaust valve to close when the temperature in the particulate collector is detected to be increased to T0 and lasts for a preset time T3;
performing S2 to S22 when a reduction in inlet pressure of the particulate collector by a% Pu is detected, a being greater than 5;
when the air inlet pressure of the particle collector is detected to be unchanged, controlling the first exhaust valve and the second exhaust valve to be opened, and simultaneously giving an alarm that the particle collector is in failure;
s32, when the temperature in the particle collector is detected to be less than T0, alarming that the particle collector is in failure;
wherein Pu is the pressure at the air inlet of the particle collector caused by breakage of the particle collector and blockage of the particle collector due to engine abnormality; t2 is the time for heating the particle collector by power generation when the pressure is abnormal; t3 is the time for the particle replenisher to burn particles when the pressure is abnormal.
The invention also provides a vehicle which comprises the vehicle exhaust particle complementary collection regeneration device.
The second exhaust pipe of the vehicle exhaust particle complementation regeneration device is provided with the generator, the generator utilizes the airflow passing through the second exhaust pipe to realize power generation, and the regeneration of the particle complementation device can be realized without additional energy. And the control system can control the first exhaust valve and the second exhaust valve to be opened or closed according to the temperature in the particle collector and the pressure of the air inlet, so that the risks of engine damage and sudden stop of the vehicle in the running process caused by the failure of the particle collector can be effectively avoided.
Drawings
Fig. 1 is a schematic diagram of a vehicle exhaust particulate complementary regeneration apparatus according to a first embodiment of the present invention.
Detailed Description
First embodiment
FIG. 1 is a schematic view of a vehicle exhaust particle complementary regeneration device according to a first embodiment of the present invention, and as shown in FIG. 1, the vehicle exhaust particle complementary regeneration device includes a particle collector 11, an air inlet pipe 12, a first exhaust pipe 13, a second exhaust pipe 14, a third exhaust pipe 15, a generator 16 and a control system 17, a heating net (not shown) is disposed in the particle collector 11, one end of the air inlet pipe 12 is connected with an air supply, the other end of the air inlet pipe 12 is connected with an air inlet of the particle collector 11, one end of the first exhaust pipe 13 is connected with an air outlet of the particle collector 11, a first exhaust valve 131 is disposed in the first exhaust pipe 13, the first exhaust pipe 13 is sequentially provided with a first mounting hole 101, a second mounting hole 102 and a third mounting hole 103 along a length direction, the first exhaust valve 131 is disposed in the first exhaust pipe 13 between the first mounting hole 101 and the second mounting hole 102, and two ends of the second exhaust pipe 14 are respectively connected with the first mounting hole 101, the second mounting hole 102, the third mounting hole 103, The second mounting hole 102 is connected, the generator 16 is connected to the second exhaust pipe 14, the generator 16 is electrically connected to the heating grid, the air inlet pipe 12 is provided with a fourth mounting hole 104, two ends of the third exhaust pipe 15 are respectively connected to the third mounting hole 103 and the fourth mounting hole 104, the third exhaust pipe 15 is internally provided with a second exhaust valve 151, the control system 17 is respectively electrically connected to the first exhaust valve 131 and the second exhaust valve 151, and the control system 17 can control the first exhaust valve 131 and the second exhaust valve 151 to be opened or closed according to the temperature and the air inlet pressure in the particle collector 11.
Further, the particle collector 11 is GPF, the particle collector 11 is used for collecting carbon particles, an electric heating wire heating net is arranged in the particle collector 11, and when the heating net is electrified, the temperature is raised to burn off the particles.
Further, the intake pipe 12 is connected to an exhaust pipe of the engine 21. The inlet pipe 12 is a thin-walled circular tube, preferably made of stainless steel. In this embodiment, the fourth mounting hole 104 of the air inlet pipe 12 is disposed near the air inlet of the particle collector 11.
Further, the first mounting hole 101 on the first exhaust pipe 13 is arranged near the air outlet of the particle collector 11; the third mounting hole 103 is located away from the outlet of the particulate collector 11. The first exhaust pipe 13 is a thin-walled circular pipe, preferably made of stainless steel.
Further, the generator 16 is an electromagnetic generator 16, a turbine (not shown) is connected to a driving shaft of the generator 16, and the turbine is disposed in the second exhaust pipe 14, and when the airflow passes through the turbine, the turbine rotates to drive the generator 16 to generate electricity.
Further, the control system 17 is an ECU for controlling the vehicle, but not limited thereto.
Further, the first exhaust valve 131 and the second exhaust valve 151 are solenoid valves, and the interface is circular. The opening and/or closing of the first exhaust valve 131 and the second exhaust valve 151 may control the flow direction of the gas flow, for example:
when the first exhaust valve 131 is controlled to be opened and the second exhaust valve 151 is controlled to be closed, most of the airflow enters the first exhaust pipe 13, and a small part of the airflow enters the second exhaust pipe 14 to enable the generator 16 to operate, at the moment, the generated energy can be ignored, and the airflow exhausted from the second exhaust pipe 14 is converged into the first exhaust pipe 13;
when the first exhaust valve 131 and the second exhaust valve 151 are both opened, a part of the air flow enters the particle collector 11 through the air inlet pipe 12, and a part of the air flow enters the third exhaust pipe 15 and then joins the first exhaust pipe 13;
when the first exhaust valve 131 is controlled to be closed and the second exhaust valve 151 is controlled to be opened, a part of the airflow enters the particle collector 11 through the air inlet pipe 12 and then enters the second exhaust pipe 14, so that the generator 16 operates to generate electricity to heat the particle collector 11; then flows out through a second exhaust pipe 14 and is merged into a first exhaust pipe 13; a part of the air flow flows into the third exhaust pipe 15 and then is merged into the first exhaust pipe 13;
when the first exhaust valve 131 and the second exhaust valve 151 are both closed, the airflow passes through the second exhaust pipe 14 to drive the generator 16 to generate electricity, the heating net heats and burns the particulate matters collected by the particulate collector 11, and the temperature of the particulate collector 11 rises; and then flows out through the second exhaust pipe 14 into the first exhaust pipe 13.
Further, a pressure sensor 112 and a temperature sensor 113 are arranged on the particle collector 11, the pressure sensor 112 is arranged near the air inlet of the particle collector 11, the temperature sensor 113 is arranged in the middle of the particle collector 11, and the control system 17 is electrically connected with the pressure sensor 112 and the temperature sensor 113 respectively. In the present embodiment, the pressure sensor 112 and the temperature sensor 113 are both high temperature resistant sensors.
Furthermore, a terminal 114 is arranged on the particle collector 11, one end of the terminal 114 is connected with the heating net, and the other end of the terminal 114 is electrically connected with the generator 16 through a lead. In this embodiment, the post 114 is made of a metallic material that is easily conductive, and the outer surface of the post 114 is coated with ceramic to insulate the post 114 from the particle collector 11.
Further, the terminal 114 is electrically connected to the control system 17, and the control system 17 is configured to control to open or close the circuit between the terminal 114 and the generator 16, for example, when the pressure in the particle collector 11 is high, the circuit between the terminal 114 and the generator 16 is controlled to be closed, so that the temperature of the particle collector 11 is raised, and the carbon particles collected by the particle collector are burned off; when the particles in the particle collector 11 are burnt out, the control opens the electric circuit between the terminal 114 and the generator 16, and stops heating.
Further, the vehicle exhaust gas particulate-replenishment regeneration device further includes a catalyst 18, and an end of the first exhaust pipe 13 remote from the particulate replenishment device 11 passes through the catalyst 18. In the present embodiment, the catalyst 18 is a three-way catalyst 18.
The second exhaust pipe 14 of the exhaust particle supplementary collective regeneration device for the vehicle is provided with the generator 16, and the generator 16 generates electricity by using the airflow passing through the second exhaust pipe 14, so that the regeneration of the particle supplementary collective 11 can be realized without additional energy. Moreover, the control system 17 can control the first exhaust valve 131 and the second exhaust valve 151 to open or close according to the temperature in the particle collector 11 and the air inlet pressure, so that the risks of damage to the engine 21 and sudden stop of the vehicle during running caused by the failure of the particle collector 11 can be effectively avoided.
Second embodiment
The invention also relates to a vehicle exhaust particulate complementary regeneration method, which utilizes the vehicle exhaust particulate complementary regeneration device, and comprises the following steps:
s1, when the air inlet pressure of the particle collector 11 is detected to be less than PL, controlling the first exhaust valve 131 to be opened and controlling the second exhaust valve 151 to be closed;
s2, when the pressure of the air inlet of the particle collector 11 is detected to be larger than Pm, the first exhaust valve 131 and the second exhaust valve 151 are controlled to be closed, the air flow drives the generator 16 to generate electricity through the second exhaust pipe 14, and the heating net heats and burns the particles collected by the particle collector 11;
where PL is the inlet pressure of the newly installed particle collector 11; pm is the air inlet pressure at which particle collector 11 reaches maximum particle capture capacity.
Further, the method further comprises:
s21, burning the particulate matter to raise the temperature of the particulate filler 11, and when the temperature in the particulate filler 11 is detected to be greater than T0 and less than T1, or the air inlet pressure of the particulate filler 11 is detected to be less than PL, executing S1;
wherein T0 is the light-off temperature of the particulate collector 11; t1 is the upper temperature limit that the particulate collector 11 can withstand.
Further, the method further comprises:
s22, burning the particulate matter to raise the temperature of the particulate filler 11, and when the temperature in the particulate filler 11 is detected to be greater than T0 and less than T1, or the air inlet pressure of the particulate filler 11 is detected to be greater than Pm, executing S1, after a preset time T1:
when the temperature inside the detected particle collector 11 is less than T2, performing S2 to S21;
when the temperature inside the detected particle collector 11 is greater than T0, S22 is performed;
wherein T2 is the ambient temperature at which the particle collector 11 is not heated; t1 is the time when the particulate collector 11 burns the particulate when power generation is not being performed.
Further, the method further comprises:
s23, burning the particulate matter to raise the temperature of the particle collector 11, and when the temperature in the particle collector 11 is detected to be less than T2, executing S2 to S22;
s24, when the temperature in the particle collector 11 is detected to be greater than T1, S1 is executed, and until the temperature is greater than T0 and less than T1, S2 to S22 are executed. In the present embodiment, steps S2 to S24 determine the particulate filler 11 combustion control process and regeneration.
Further, the method further comprises:
s3, when the power of the vehicle engine 21 is decreased and increased and the pressure of the air inlet of the particle collector 11 is detected to be larger than Pu, controlling the first exhaust valve 131 to be closed and the second exhaust valve 151 to be opened, enabling the air flow to drive the generator 16 to generate power through the second exhaust pipe 14, heating and burning the particles collected by the particle collector 11 through the heating net, and after a preset time t 2:
s31, burning the particulate matter to increase the temperature of the particulate trap 11, and controlling the second exhaust valve 151 to close when the temperature in the particulate trap 11 is detected to be increased to T0 for a preset time T3;
when a decrease of a% Pu in the inlet pressure of the particulate collector 11 is detected, S2 to S22 are performed, a is greater than 5;
when the air inlet pressure of the particle collector 11 is not changed, the first exhaust valve 131 and the second exhaust valve 151 are controlled to be opened, and meanwhile, the alarm that the particle collector 11 is in failure is sent out;
s32, when the temperature in the particle collector 11 is detected to be less than T0, an alarm that the particle collector 11 is out of order is sent;
wherein Pu is the pressure of the air inlet of the particle collector 11, which is blocked due to the breakage of the particle collector 11 and the abnormality of the engine 21; t2 is the time for heating the particle collector 11 by power generation when the pressure is abnormal; t3 is the time when the particulate collector 11 burns the particulate when the pressure is abnormal. In the present embodiment, when the pressure is abnormal, the steps S3 to S31 can effectively protect the engine 21 from damage and avoid the danger of sudden stop of the vehicle.
The generator 16 of the vehicle exhaust particulate make-up regeneration method of the present invention uses the airflow through the second exhaust duct 14 to generate electricity, and the regeneration of the particulate make-up 11 can be achieved without additional energy. Moreover, the method can control the first exhaust valve 131 and the second exhaust valve 151 to open or close according to the temperature in the particle collector 11 and the air inlet pressure, and can effectively avoid the risk of damage to the engine 21 and sudden stop of the vehicle during running caused by the failure of the particle collector 11.
Third embodiment
The invention also relates to a vehicle which comprises the vehicle exhaust particle complementary collection regeneration device.
The present invention is not limited to the specific details of the above-described embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention. The various features described in the foregoing detailed description may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.
Claims (10)
1. A vehicle exhaust particle complementary regeneration device is characterized by comprising a particle collector, an air inlet pipe, a first exhaust pipe, a second exhaust pipe, a third exhaust pipe, a generator and a control system, wherein a heating net is arranged in the particle collector, one end of the air inlet pipe is connected with an air source, the other end of the air inlet pipe is connected with an air inlet of the particle collector, one end of the first exhaust pipe is connected with an air outlet of the particle collector, a first exhaust valve is arranged in the first exhaust pipe, the first exhaust pipe is sequentially provided with a first mounting hole, a second mounting hole and a third mounting hole along the length direction, the first exhaust valve is positioned in the first exhaust pipe between the first mounting hole and the second mounting hole, and two ends of the second exhaust pipe are respectively connected with the first mounting hole and the second mounting hole, the generator is connected to the second exhaust pipe, the generator is electrically connected with the heating net, a fourth mounting hole is formed in the air inlet pipe, two ends of the third exhaust pipe are respectively connected with the third mounting hole and the fourth mounting hole, a second exhaust valve is arranged in the third exhaust pipe, the control system is respectively electrically connected with the first exhaust valve and the second exhaust valve, the control system can control the first exhaust valve and the second exhaust valve to be opened or closed according to the temperature and the pressure of an air inlet in the particle collector, the first mounting hole is arranged close to the air outlet of the particle collector, and the third mounting hole is arranged far away from the air outlet of the particle collector;
when the air inlet pressure of the particle collector is detected to be smaller than PL, controlling the first exhaust valve to be opened and controlling the second exhaust valve to be closed;
when the pressure of an air inlet of the particle collector is detected to be greater than Pm, controlling the first exhaust valve and the second exhaust valve to be closed, driving the generator to generate electricity by air flow through the second exhaust pipe, and heating and burning the particles supplemented by the particle collector by the heating net;
wherein PL is the inlet pressure of the newly installed particle collector; pm is the air inlet pressure at which the particulate collector reaches maximum particulate trapping capacity.
2. The vehicle exhaust particulate collection regeneration device according to claim 1, wherein the particulate collector is provided with a pressure sensor and a temperature sensor, the pressure sensor is arranged near an air inlet of the particulate collector, the temperature sensor is arranged in the middle of the particulate collector, and the control system is electrically connected with the pressure sensor and the temperature sensor respectively.
3. The vehicle exhaust particle complementary regeneration device according to claim 1, wherein a terminal is provided on the particle complementary device, one end of the terminal is connected to the heating net, and the other end of the terminal is electrically connected to the generator through a wire.
4. The vehicle exhaust particulate collection regeneration device according to claim 1, further comprising a catalyst through which an end of the first exhaust pipe remote from the particulate collector passes.
5. A vehicle exhaust particulate complementary regeneration method, characterized in that the method utilizes the vehicle exhaust particulate complementary regeneration device of any one of claims 1 to 4, the method comprising:
s1, when the air inlet pressure of the particle collector is detected to be smaller than PL, controlling the first exhaust valve to be opened and controlling the second exhaust valve to be closed;
s2, when the pressure of the air inlet of the particle collector is detected to be larger than Pm, the first exhaust valve and the second exhaust valve are controlled to be closed, the air flow drives the generator to generate electricity through the second exhaust pipe, and the heating net heats and burns the particles collected by the particle collector;
wherein PL is the inlet pressure of the newly installed particle collector; pm is the air inlet pressure at which the particulate collector reaches maximum particulate trapping capacity.
6. The vehicle exhaust particulate regeneration method of claim 5, further comprising:
s21, burning the particulate matter to raise the temperature of the particulate collector, and when detecting that the temperature in the particulate collector is more than T0 and less than T1 or detecting that the air inlet pressure of the particulate collector is less than PL, executing S1;
wherein T0 is the light-off temperature of the particulate collector; t1 is the upper temperature limit that the particulate collector can withstand.
7. The vehicle exhaust particulate regeneration method of claim 6, further comprising:
s22, burning the particulate matter to raise the temperature of the particulate collector, and when detecting that the temperature in the particulate collector is more than T0 and less than T1 or detecting that the air inlet pressure of the particulate collector is more than Pm, executing S1, and after a preset time T1:
performing S2 to S21 when the temperature within the particulate collector is detected to be less than T2;
performing S22 when detecting that the temperature within the particulate collector is greater than T0;
wherein T2 is the ambient temperature at which the particle collector is not heated; t1 is the time when the particle collector burns particles when power is not generated.
8. The vehicle exhaust particulate regeneration method of claim 7, further comprising:
s23, burning the particulate matter to raise the temperature of the particle collector, and when the temperature in the particle collector is detected to be less than T2, executing S2 to S22;
s24, when the temperature in the particle collector is detected to be more than T1, executing S1, and executing S2 to S22 until the temperature is more than T0 and less than T1.
9. The vehicle exhaust particulate regeneration method of claim 8, further comprising:
s3, when the power of the vehicle engine is decreased and increased and the pressure of the air inlet of the particle collector is detected to be greater than Pu, the first exhaust valve is controlled to be closed and the second exhaust valve is controlled to be opened, the airflow drives the generator to generate power through the second exhaust pipe, the heating net heats and burns the particles collected by the particle collector, and after a preset time t 2:
s31, burning the particulate matter to increase the temperature of the particulate collector, and controlling the second exhaust valve to close when the temperature in the particulate collector is detected to be increased to T0 and lasts for a preset time T3;
performing S2 to S22 when a reduction in inlet pressure of the particulate collector by a% Pu is detected, a being greater than 5;
when the air inlet pressure of the particle collector is detected to be unchanged, controlling the first exhaust valve and the second exhaust valve to be opened, and simultaneously giving an alarm that the particle collector is in failure;
s32, when the temperature in the particle collector is detected to be less than T0, alarming that the particle collector is in failure;
wherein Pu is the pressure at the air inlet of the particle collector caused by breakage of the particle collector and blockage of the particle collector due to engine abnormality; t2 is the time for heating the particle collector by power generation when the pressure is abnormal; t3 is the time when the particle collector burns particles when the pressure is abnormal.
10. A vehicle characterized by comprising the vehicle exhaust particulate complementary regeneration device according to any one of claims 1 to 4.
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