WO2021169947A1 - Système de régénération de filtre à particules et son procédé de commande - Google Patents

Système de régénération de filtre à particules et son procédé de commande Download PDF

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Publication number
WO2021169947A1
WO2021169947A1 PCT/CN2021/077452 CN2021077452W WO2021169947A1 WO 2021169947 A1 WO2021169947 A1 WO 2021169947A1 CN 2021077452 W CN2021077452 W CN 2021077452W WO 2021169947 A1 WO2021169947 A1 WO 2021169947A1
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WIPO (PCT)
Prior art keywords
valve
particle trap
connecting pipeline
exhaust
regeneration system
Prior art date
Application number
PCT/CN2021/077452
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English (en)
Chinese (zh)
Inventor
马赫阳
王占峰
韩令海
李金成
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中国第一汽车股份有限公司
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Publication of WO2021169947A1 publication Critical patent/WO2021169947A1/fr

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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
    • F01N3/031—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 having means for by-passing filters, e.g. when clogged or during cold engine start
    • 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
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
    • F01N11/005—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus the temperature or pressure being estimated, e.g. by means of a theoretical model
    • 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
    • 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
    • F01N3/0233—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 periodically cleaning filter by blowing a gas through the filter in a direction opposite to exhaust flow, e.g. exposing filter to engine air intake
    • 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
    • F01N3/0238—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 for regenerating during engine standstill
    • 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
    • F01N3/029—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 by adding non-fuel substances to exhaust
    • F01N3/0293—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 by adding non-fuel substances to exhaust injecting substances in exhaust stream
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • F02B39/02—Drives of pumps; Varying pump drive gear ratio
    • F02B39/08—Non-mechanical drives, e.g. fluid drives having variable gear ratio
    • F02B39/10—Non-mechanical drives, e.g. fluid drives having variable gear ratio electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • F02B39/16—Other safety measures for, or other control of, pumps
    • 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
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/06—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a temperature sensor
    • 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
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/08—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a pressure sensor
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/06—Adding substances to exhaust gases the substance being in the gaseous form
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/08—Adding substances to exhaust gases with prior mixing of the substances with a gas, e.g. air
    • F01N2610/085—Controlling the air supply
    • 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
    • F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
    • F01N2900/1404—Exhaust gas temperature
    • 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
    • F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
    • F01N2900/1406—Exhaust gas pressure
    • 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

Definitions

  • This application relates to the technical field of engine exhaust gas treatment, for example, to a particle trap regeneration system and a control method thereof.
  • GPF Gasoline Particulate Filter
  • GPF regeneration can be divided into active regeneration and passive regeneration.
  • Active regeneration refers to increasing the oxygen content and exhaust temperature in the GPF by changing external operations such as the control strategy of the gasoline engine, so as to oxidize and regenerate particulate matter;
  • passive regeneration refers to the vehicle driving without the help of external operations
  • the GPF automatically reaches the regeneration conditions under working conditions such as deceleration and oil cut. Active regeneration of GPF will predict and more efficiently perform oxidation regeneration of GPF particles than passive regeneration, thereby reducing exhaust back pressure, ensuring normal operation of gasoline engines, reducing the risk of GPF clogging, and prolonging the service life of GPF.
  • the present application provides a particle trap regeneration system, which can fully meet the regeneration requirements of the corresponding particle trap without additional air tanks, which reduces the difficulty of structural arrangement.
  • the present application provides a method for controlling the regeneration system of a particle trap, which controls the regeneration of the particle trap on the basis of the vehicle dynamics and the regeneration demand of the particle trap.
  • An embodiment provides a particle trap regeneration system, including:
  • An intake pipe the outlet of the intake pipe is connected to the intake inlet of the engine, and an electric supercharger is arranged on the intake pipe;
  • An exhaust pipeline the inlet of the exhaust pipeline is connected to the exhaust outlet of the engine, and a first on-off valve, a main particle trap, and a second on-off valve are sequentially arranged along the exhaust direction on the exhaust pipeline;
  • a first connecting pipeline the first connecting pipeline communicates the intake pipeline and the exhaust pipeline, and the inlet end of the first connecting pipeline communicates with the electric supercharger, the first
  • the outlet end of a connecting pipeline is connected between the first on-off valve and the main particle trap;
  • the first connecting pipeline is provided with a regulating valve and a third on-off valve; the regulating valve can be adjusted to open Degree to control the gas flow through the first connecting pipeline;
  • the second connecting pipeline the inlet end of the second connecting pipeline is connected between the regulating valve and the third on-off valve of the first connecting pipeline, and the outlet end of the second connecting pipeline Connected between the main particle trap and the second on-off valve; a fourth on-off valve is arranged on the second connecting pipeline;
  • the third connecting pipeline, the inlet end of the third connecting pipeline is connected between the first on-off valve and the outlet of the first connecting pipeline, and the outlet end of the third connecting pipeline is connected to
  • the second on-off valve and the third connecting pipeline are sequentially arranged along the exhaust direction with a fifth on-off valve and an auxiliary particle trap.
  • the air intake pipeline is arranged in sequence along the intake direction, the electric supercharger and the compressor are arranged in sequence, and the exhaust pipeline is arranged in sequence along the exhaust direction.
  • the exhaust pipeline is arranged in sequence along the exhaust direction.
  • the front and rear ends of the main particle trap are respectively provided with a first pressure sensor and a second pressure sensor.
  • a third pressure sensor and a fourth pressure sensor are respectively provided at the front and rear ends of the auxiliary particle trap.
  • a temperature sensor is arranged in the part of the exhaust pipe between the first on-off valve and the main particle trap to detect the entry into the The gas temperature of the main particle trap and the auxiliary particle trap.
  • a flow sensor is arranged at the end of the exhaust pipe.
  • An embodiment provides a control method of the above-mentioned particle trap regeneration system, including:
  • Step 1 Monitor the working signal of the engine, the gas temperature T of the exhaust pipe, the pressure difference ⁇ P 1 between the front and rear ends of the main particle trap, and the pressure difference ⁇ P 2 between the front and rear ends of the auxiliary particle trap;
  • Step 2 When the engine has started working, go to step 3, when the engine is not working, go to step 8;
  • Step 3 In response to ⁇ P 1 > ⁇ P 1limit1 , go to step 4, and in response to ⁇ P 1 ⁇ ⁇ P 1limit1 , go to step 6; where ⁇ P 1limit1 is the first limit pressure difference of the primary particle trap;
  • Step 4 In response to T>T 0 , go to step 5, in response to T ⁇ T 0 , go to step 3; where T 0 is required for regeneration of the main particle trap and the auxiliary particle trap The lowest temperature;
  • Step 5 Increase the rotational speed of the electric supercharger to increase the boost pressure, the regulating valve, the first on-off valve, the second on-off valve, and the third on-off valve are opened, and the fourth switch The valve and the fifth on-off valve are closed to promote the regeneration of the main particle trap; go to step 3;
  • Step 6 In response to ⁇ P 2 > ⁇ P 2limit , go to step 7, and in response to ⁇ P 2 ⁇ ⁇ P 2limit , go to step 10; where ⁇ P 2limit is the ultimate pressure difference of the auxiliary particle trap;
  • Step 7 The first on-off valve and the fifth on-off valve are opened, the regulating valve, the fourth on-off valve, the second on-off valve, and the third on-off valve are closed, and the auxiliary particles Regeneration of the trap; go to step 6;
  • Step 8 In response to ⁇ P 1 > ⁇ P 1limit2 , go to step 9, and in response to ⁇ P 1 ⁇ ⁇ P 1limit2 , go to step 10; where ⁇ P 1limit2 is the second limit pressure difference of the primary particle trap, and ⁇ P 1limit1 is greater than ⁇ P 1limit2 ;
  • Step 9 The electric supercharger works, the regulating valve is opened, the first on-off valve, the second on-off valve, and the third on-off valve are closed, and the fourth on-off valve and the fifth on-off valve are closed.
  • the on-off valve is opened, and the main particle trap is blown back with pressurized gas to blow particles into the auxiliary particle trap; go to step 8;
  • Step 10 End of control.
  • step 2 the method further includes:
  • the vehicle torque demand signal is monitored, and in response to the torque demand being less than 80%, the subsequent steps are performed. In response to the torque demand being greater than or equal to 80%, the control ends.
  • step 4 further includes:
  • the entire vehicle In response to T ⁇ T 0 , the entire vehicle raises the exhaust gas temperature T by adjusting the engine operating conditions until T>T 0 .
  • the initial state of the particle trap regeneration system is: the regulating valve is closed, the third on-off valve, and the fourth on-off valve And the fifth on-off valve is closed, and the first on-off valve and the second on-off valve are opened.
  • Figure 1 is a schematic structural diagram of a particle trap regeneration system in an embodiment of the application
  • FIG. 2 is a schematic diagram of a particle trap regeneration system in the first state in an embodiment of the application
  • FIG. 3 is a schematic diagram of a particle trap regeneration system in the second state in an embodiment of the application.
  • Fig. 4 is a schematic diagram of a particle trap regeneration system in the third state in an embodiment of the application.
  • FIG. 5 is a schematic diagram of a particle trap regeneration system in a fourth state in an embodiment of the application.
  • Fig. 6 is a control flowchart of a particle trap regeneration system in an embodiment of the application.
  • 201-first on-off valve 202-second on-off valve; 301-regulating valve; 302-third on-off valve; 401-fourth on-off valve; 501-fifth on-off valve;
  • the "on" or “under” of the first feature of the second feature may include direct contact between the first and second features, or may include the first and second features Not in direct contact but through other features between them.
  • the "above”, “above” and “above” of the first feature on the second feature include the first feature directly above and obliquely above the second feature, or it simply means that the first feature is higher in level than the second feature.
  • the “below”, “below” and “below” of the second feature of the first feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
  • FIG. 1 is a schematic structural diagram of a particle trap regeneration system in an embodiment of the application; as shown in Figure 1, this embodiment discloses a particle trap regeneration system, including:
  • the outlet of the intake pipe 100 is connected to the intake inlet of the engine 20 (that is, the inlet of the intake manifold 1), and an electric supercharger 3 is arranged on the intake pipe 100;
  • Exhaust pipe 200 the inlet of the exhaust pipe 200 is connected to the exhaust outlet of the engine 20 (that is, the outlet of the exhaust manifold 2), and the first on-off valve 201 and the main particle trap are arranged in sequence along the exhaust direction 7 and the second on-off valve 202;
  • the first connecting pipe 300 connects the intake pipe 100 and the exhaust pipe 200, and after the inlet end of the first connecting pipe 300 is connected to the electric supercharger 3, the outlet end is connected to the first switch valve 201 and the main particle Between the traps 7; a regulating valve 301 and a third on-off valve 302 are provided on the first connecting pipeline 300, and the regulating valve 301 can adjust the opening to control the gas flow through the first connecting pipeline 300;
  • the second connecting pipe 400 has its inlet end connected between the regulating valve 301 and the third on-off valve 302 in the first connecting pipe 300, and its outlet end is connected between the main particle trap 7 and the second on-off valve 202 , And a fourth switch valve 401 is arranged on the second connecting pipeline 400;
  • the third connecting pipe 500 has its inlet end connected between the first on-off valve 201 and the outlet of the first connecting pipe 300, and after the outlet end is connected to the second on-off valve 202, the third connecting pipe 500 is along the exhaust direction A fifth on-off valve 501 and an auxiliary particle trap 8 are provided in this order.
  • the intake pipe 100 is arranged with the above-mentioned electric supercharger 3 and the compressor 4 in sequence along the intake direction
  • the exhaust pipe 200 is arranged with a turbine 5, a three-way catalyst 6, and a three-way catalyst in sequence along the exhaust direction.
  • pressure is arranged at the front and rear ends of the primary particle trap 7 and the auxiliary particle trap 8.
  • the sensor by monitoring the pressure difference ⁇ P between the front and rear ends of the particle trap, characterizes the degree of saturation of the particle trap.
  • the limit is set, it means that the particle trap has a regeneration requirement, and the regeneration operation of the particle trap is required.
  • a first pressure sensor 71 and a second pressure sensor 72 are respectively provided at the front and rear ends of the main particle trap 7, and a third pressure sensor 81 and a fourth pressure sensor are provided at the front and rear ends of the auxiliary particle trap 8.
  • the pressure difference between the first pressure sensor 71 and the second pressure sensor 72 is set to ⁇ P 1
  • the pressure difference between the third pressure sensor 81 and the fourth pressure sensor 82 is set to ⁇ P 2 ; where ⁇ P 1 and ⁇ P 2 are both A positive value means that the front end is the inlet end of the particle trap, and the back end is the outlet end of the particle trap.
  • ⁇ P 1limit1 is the first limit pressure difference of the main particle trap 7. Once ⁇ P 1 exceeds this value, it indicates that the main particle trap 7 is saturated and has a regeneration requirement.
  • ⁇ P 2limit is the limit pressure difference of the auxiliary particle trap 8. Once ⁇ P 2 exceeds this value, it indicates that the auxiliary particle trap 8 is saturated and has regeneration requirements.
  • a temperature sensor 9 is arranged in the part of the exhaust pipe 200 between the first on-off valve 201 and the main particulate trap 7 to detect particle trap 7 into the main and auxiliary gas temperature particle trap 8; the present embodiment, to meet a predetermined minimum temperature of the particulate trap regeneration is T 0, i.e., only when T> T 0, the particles The trap can be regenerated.
  • a flow sensor 10 is arranged at the end of the exhaust pipe 200 to understand the gas flow index of the entire regeneration system.
  • the first on-off valve 201, the second on-off valve 202, the third on-off valve 302, the fourth on-off valve 401, and the fifth on-off valve 501 can only perform two functions of opening and closing, and there is no adjustment.
  • the valve 301 has the function of adjusting the opening degree.
  • the particle trap regeneration system provided in this embodiment is closely connected with the engine structure.
  • the engines used in this embodiment are all conventional engines, so the detailed structure of the engine will not be described in detail here.
  • the following describes the four working states of the particle trap regeneration system in conjunction with Figures 2 to 5 in order to better understand the working principle of the entire regeneration system.
  • Fig. 2 is a schematic diagram of a particle trap regeneration system in the first state in an embodiment of the application; referring to Fig. 2, the engine 20 is in the on state, the regulating valve 301 is closed, the first on-off valve 201 and the second on-off valve 202 is in the open state, the third on-off valve 302, the fourth on-off valve 401, and the fifth on-off valve 501 are all in the closed state. At this time, the gas enters the engine 20 through the intake pipe 100, and is discharged only through the exhaust pipe 200;
  • the first state is the usual state of the particle trap regeneration system, that is, when the engine 20 is started, the function of the main particle trap 7 is mainly implemented.
  • the initial state of the entire regeneration system needs to be preset as follows: the regulating valve 301 is closed, the third on-off valve 302, the fourth on-off valve 401, and the fifth on-off valve 501 are closed, and the first on-off valve 201 and the second on-off valve 202 are opened.
  • FIG. 3 is a schematic diagram of a particle trap regeneration system in the second state in an embodiment of the application; referring to FIG. 3, the engine 20 is in the on state, the regulating valve 301 is opened, the first on-off valve 201, and the second on-off valve 202 and the third on-off valve 302 are in the open state, and the fourth on-off valve 401 and the fifth on-off valve 501 are in the closed state. At this time, a part of the intake air is directly introduced into the main particle trap 7 through the first connecting pipe 300, thereby increasing The oxygen content in the main particle trap 7 promotes the oxidation and regeneration of the main particle trap 7.
  • Fig. 4 is a schematic diagram of a particle trap regeneration system in the third state in an embodiment of the application; referring to Fig. 4, the engine 20 is in the on state, the regulating valve 301 is closed, the first on-off valve 201, and the fifth on-off valve 501 is in the open state, the fourth card on-off valve 401, the second on-off valve 202, and the third on-off valve 302 are in the closed state, and the exhaust gas is discharged to the atmosphere after passing through the auxiliary particle trap 8 on the third connecting pipe 500; When there is no need for regeneration of the main particle trap 7, the regeneration system can be switched to this state to perform the regeneration of the auxiliary particle trap 8.
  • Fig. 5 is a schematic diagram of a particle trap regeneration system in the fourth state according to an embodiment of the application; referring to Fig. 5, the engine 20 is in a stopped state, the regulating valve 301 is opened, the first on-off valve 201, and the second on-off valve 202 and the third on-off valve 302 are in the closed state, the fourth on-off valve 401 and the fifth on-off valve 501 are in the open state, the electric booster 3 works, and the pressurized gas passes through the first connecting pipeline 300 and the second connection in turn The pipeline 400 is then reversely introduced into the main particle trap 7 to blow out the particulate matter in the main particle trap 7 and lead to the auxiliary particle trap 8 through the third connecting pipeline 500, thereby trapping the particles originally present in the main particle trap.
  • the particulate matter in the trap 7 is released, which reduces the carbon load of the primary particulate trap 7 so that the subsequent primary particulate trap 7 can continue to trap particulate matter and prolong the service life of the primary particulate trap 7.
  • the regeneration system can be switched to the third state, and the auxiliary particulate trap 8 is regenerated.
  • both the primary particle trap 7 and the auxiliary particle trap 8 can be regenerated by the particle trap regeneration system provided in this embodiment.
  • ⁇ P 1limit2 may be specified as the second limit pressure difference of the main particle trap 7, and ⁇ P 1limit1 must be greater than ⁇ P 1limit2 , so that the main particle trap 7 can be monitored before it is fully saturated. And when the engine 20 is stopped, the particulate matter is blown back to the auxiliary particle trap 8 in time to release the capacity of the main particle trap 7 and prolong the service life of the main particle trap 7.
  • the primary particle trap 7 and the auxiliary particle trap 8 are set at the same time, and different pipelines and valves are set accordingly, so as to reduce the difficulty of structural arrangement as much as possible. At the same time, it satisfies the regeneration requirements of the entire particle trap system; when the engine 20 is running, the oxygen concentration in the main particle trap 7 can be increased through the setting of the first connecting pipe 300 to promote particle regeneration; the auxiliary particle trap 8 When the engine 20 is working and the main particle trap 7 has no need for regeneration, high-pressure air will be introduced to achieve self-regeneration; when the engine 20 is stopped, the high-pressure air can be reversed The particulate matter in the particle trap 7 is blown into the auxiliary particle trap 8 to reduce the carbon load of the main particle trap 7 and prolong the service life of the main particle trap 7.
  • Fig. 6 is a control flow chart of a particle trap regeneration system in an embodiment of this application; referring to Fig. 6, this embodiment also discloses a control method applied to the above particle trap regeneration system, including the following steps:
  • S5 Increase the speed of the electric supercharger 3 and increase the boost pressure.
  • the regulating valve 301, the first on-off valve 201, the second on-off valve 202, and the third on-off valve 302 are opened, and the fourth on-off valve 401 and the fifth on-off valve 501 are opened. Close to promote the regeneration of the main particle trap 7 (that is, the second state of the regeneration system shown in Figure 3); go to S3;
  • between S2 and S3 further includes:
  • S21 Monitor the vehicle torque demand signal. If the torque demand is less than 80%, proceed to the subsequent steps, otherwise the control ends.
  • the purpose of setting S21 is to ensure that the electric supercharger 3 first needs to meet the operating requirements of the engine 20 before the particle trap can be regenerated, otherwise the regeneration is not considered.
  • S4 further includes:
  • T 0 needs to be calibrated according to different particle trap models, and ⁇ P 1limit1 , ⁇ P 1limit2 and ⁇ P 2limit need to be calibrated according to engine model, particle trap model and exhaust flow.
  • control method of the particle trap regeneration system controls the regeneration of the particle trap on the basis of the vehicle dynamics and the regeneration demand of the particle trap, that is, the control method can be based on the pressure
  • the accurate monitoring of the difference considering the regeneration requirements of different particle traps, realizes the separate regeneration of the main particle trap 7 and the auxiliary particle trap 8; at the same time, the control method can also be used in both the engine 20 startup and shutdown situations
  • the auxiliary particle trap 8 plays a role when the engine is stopped, prolongs the service life of the main particle trap 7, reduces the exhaust back pressure, reduces the fuel consumption of the vehicle, and achieves better The economy of the whole vehicle.
  • the main particle trap 7 and the auxiliary particle trap 8 are set at the same time, and different pipelines and valves are set accordingly, so as to reduce the difficulty of structural arrangement as much as possible while satisfying the entire The regeneration requirements of the particle trap regeneration system.
  • the oxygen concentration in the main particle trap 7 can be increased through the setting of the first connecting pipe 300 to promote particle regeneration; the auxiliary particle trap 8 will work on the engine 20 and the main particle trap 7 will not work.
  • high-pressure air is introduced to achieve self-regeneration; when the engine 20 is stopped, the high-pressure air can be reversely introduced into the main particle trap 7, and the particles in the main particle trap 7 are blown into the auxiliary particle trap through the pipeline arrangement.
  • the collector 8 reduces the carbon load of the main particle trap 7 and prolongs the service life of the main particle trap 7.
  • the control method of the particle trap regeneration system of the present application controls the regeneration of the particle trap on the basis of the vehicle dynamics and the regeneration demand of the particle trap, that is, the control method can accurately monitor the pressure difference and consider The regeneration requirements of different particle traps realize the separate regeneration of the main particle trap 7 and the auxiliary particle trap 8; at the same time, the control method can also realize different control logics when the engine 20 is started and stopped.
  • the auxiliary particle trap 8 plays a role when the engine 20 is stopped, extending the service life of the main particle trap 7, reducing exhaust back pressure, reducing vehicle fuel consumption, and achieving better vehicle economy .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

La présente invention concerne un système de régénération de filtre à particules et un procédé de commande de celui-ci. Le système de régénération comprend : une conduite d'entrée d'air (100) reliée à une entrée d'air d'un moteur (20) ; une conduite d'échappement (200) reliée à une sortie d'échappement du moteur (20) et munie d'un filtre à particules principal (7) ; une première conduite de raccordement (300), communiquant avec la conduite d'entrée d'air et la conduite d'échappement, et dont l'extrémité de sortie communique avec une extrémité avant du filtre à particules principal ; une deuxième canalisation de raccordement (400), dont l'extrémité d'entrée communique avec la première canalisation de raccordement, et dont l'extrémité de sortie communique avec une extrémité arrière du filtre à particules principal ; et une troisième conduite de raccordement (500), dont l'extrémité d'entrée communique avec la conduite d'échappement, et dont l'extrémité de sortie communique avec l'extrémité arrière du filtre à particules principal, un filtre à particules auxiliaire (8) étant prévu sur la troisième conduite de raccordement.
PCT/CN2021/077452 2020-02-24 2021-02-23 Système de régénération de filtre à particules et son procédé de commande WO2021169947A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115405401A (zh) * 2022-08-26 2022-11-29 中国第一汽车股份有限公司 颗粒捕集装置辅助再生系统的控制方法、控制装置、车辆

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111219229A (zh) * 2020-02-24 2020-06-02 中国第一汽车股份有限公司 一种颗粒捕集器再生系统及其控制方法
CN111622827A (zh) * 2020-06-05 2020-09-04 中国第一汽车股份有限公司 一种汽油颗粒捕集器再生装置及车辆
CN113356970B (zh) * 2021-06-30 2023-01-31 东风汽车集团股份有限公司 一种发动机国六gpf清灰的进排气系统及其控制方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0763038A (ja) * 1993-08-23 1995-03-07 Toyota Motor Corp ディーゼル機関の排気微粒子除去装置
JPH0771226A (ja) * 1993-09-03 1995-03-14 Nippon Soken Inc 排気微粒子浄化装置
US5701735A (en) * 1994-08-08 1997-12-30 Toyota Jidosha Kabushiki Kaisha Method for regenerating a particulate collection filter and an exhaust emission control system with a particulate collection filter
CN1174929A (zh) * 1996-07-02 1998-03-04 伊比登株式会社 反向清除的再生型废气排放物控制装置及其再生方法
WO2004031548A1 (fr) * 2002-10-01 2004-04-15 Tokudaiji Institute Of Automotive Culture Inc. Dispositif de regeneration continue de mp pour moteurs diesel et son procede de production
CN204755026U (zh) * 2015-05-28 2015-11-11 中国汽车技术研究中心 汽油机双路并联颗粒物过滤装置
CN110700921A (zh) * 2018-07-10 2020-01-17 现代自动车株式会社 用于强制再生汽油微粒过滤器的系统
CN111219229A (zh) * 2020-02-24 2020-06-02 中国第一汽车股份有限公司 一种颗粒捕集器再生系统及其控制方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4201402C1 (en) * 1992-01-21 1993-01-21 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Vehicle exhaust system with filter - has by=pass and additional filter to enable regeneration by reversal of flow
JP4915277B2 (ja) * 2007-05-14 2012-04-11 トヨタ自動車株式会社 内燃機関の排気浄化装置
JP5344831B2 (ja) * 2008-03-18 2013-11-20 三菱重工業株式会社 低温作動脱硝装置、船舶、低温作動脱硝装置の運用方法
CN107514299A (zh) * 2017-08-22 2017-12-26 芜湖恒耀汽车零部件有限公司 一种汽车尾气颗粒物过滤装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0763038A (ja) * 1993-08-23 1995-03-07 Toyota Motor Corp ディーゼル機関の排気微粒子除去装置
JPH0771226A (ja) * 1993-09-03 1995-03-14 Nippon Soken Inc 排気微粒子浄化装置
US5701735A (en) * 1994-08-08 1997-12-30 Toyota Jidosha Kabushiki Kaisha Method for regenerating a particulate collection filter and an exhaust emission control system with a particulate collection filter
CN1174929A (zh) * 1996-07-02 1998-03-04 伊比登株式会社 反向清除的再生型废气排放物控制装置及其再生方法
WO2004031548A1 (fr) * 2002-10-01 2004-04-15 Tokudaiji Institute Of Automotive Culture Inc. Dispositif de regeneration continue de mp pour moteurs diesel et son procede de production
CN204755026U (zh) * 2015-05-28 2015-11-11 中国汽车技术研究中心 汽油机双路并联颗粒物过滤装置
CN110700921A (zh) * 2018-07-10 2020-01-17 现代自动车株式会社 用于强制再生汽油微粒过滤器的系统
CN111219229A (zh) * 2020-02-24 2020-06-02 中国第一汽车股份有限公司 一种颗粒捕集器再生系统及其控制方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115405401A (zh) * 2022-08-26 2022-11-29 中国第一汽车股份有限公司 颗粒捕集装置辅助再生系统的控制方法、控制装置、车辆
CN115405401B (zh) * 2022-08-26 2023-10-27 中国第一汽车股份有限公司 颗粒捕集装置辅助再生系统的控制方法、控制装置、车辆

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