WO2022017060A1 - 车辆废气再循环的控制方法、装置和电子设备 - Google Patents

车辆废气再循环的控制方法、装置和电子设备 Download PDF

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Publication number
WO2022017060A1
WO2022017060A1 PCT/CN2021/099899 CN2021099899W WO2022017060A1 WO 2022017060 A1 WO2022017060 A1 WO 2022017060A1 CN 2021099899 W CN2021099899 W CN 2021099899W WO 2022017060 A1 WO2022017060 A1 WO 2022017060A1
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WIPO (PCT)
Prior art keywords
egr
gas
temperature
recovered
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/CN2021/099899
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English (en)
French (fr)
Inventor
黄兴来
张凯
曾志新
钟广桦
张宁
钟灵贵
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Guangzhou Automobile Group Co Ltd
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Guangzhou Automobile Group Co Ltd
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Application filed by Guangzhou Automobile Group Co Ltd filed Critical Guangzhou Automobile Group Co Ltd
Priority to US17/787,660 priority Critical patent/US11692518B2/en
Publication of WO2022017060A1 publication Critical patent/WO2022017060A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/33—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage controlling the temperature of the recirculated gases
    • 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
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
    • F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
    • F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F02D41/0077—Control of the EGR valve or actuator, e.g. duty cycle, closed loop control of position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D43/00—Conjoint electrical control of two or more functions, e.g. ignition, fuel-air mixture, recirculation, supercharging or exhaust-gas treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/15—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/30—Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/32—Liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
    • F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
    • F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine
    • F02D2021/083—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine controlling exhaust gas recirculation electronically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/06—Low pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust downstream of the turbocharger turbine and reintroduced into the intake system upstream of the compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/34—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with compressors, turbines or the like in the recirculation passage
    • 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

  • the present application relates to the technical field of vehicles, and in particular, to a control method, device and electronic device for vehicle exhaust gas recirculation.
  • GPF Gasoline Particulate Filter
  • Gasoline Particulate Filter is a ceramic filter installed in the exhaust system of a gasoline engine, which captures particulate emissions before they enter the atmosphere.
  • DPF Diesel Particulate Filter, Diesel Particulate Filter
  • Diesel Particulate Filter is a ceramic filter installed in the diesel engine exhaust system that captures particulate emissions before they enter the atmosphere.
  • the emission standards of vehicles are getting higher and higher. Gradually deepen the restrictions on large-displacement vehicles and increase the promotion of small-displacement vehicles.
  • the high output power of a small-displacement vehicle leads to a high combustion temperature in the engine, which will produce a large amount of NO X and pollute the environment.
  • the vehicle is generally equipped with an exhaust system to solve the DPF or GPF combustion engine emissions of particulate matter, reduction of pollutants NO X contained in exhaust gas, to protect the environment.
  • EGR exhaust Gas Re-circulation, exhaust gas recirculation
  • GPF or DPF is also used in the exhaust system of the vehicle, which will lead to an increase in the temperature of the engine in the process of burning exhaust gas, and an increase in the airflow of the exhaust gas.
  • GPF or DPF and EGR work independently of each other, and the gas treated by GPF or DPF will be recycled into EGR, so EGR will also face the problems of increased gas temperature and increased gas flow, which makes it difficult to reduce the generation of NO X and reduce EGR work efficiency.
  • the present application provides a vehicle exhaust gas recirculation control method, device and electronic device to solve or alleviate one or more technical problems in the prior art.
  • a method for controlling exhaust gas recirculation of a vehicle processes the gas discharged from the internal combustion engine and then discharges it to the exhaust passage, and the gas discharged from the GPF/DPF can be recycled into the EGR, and the EGR uses the cooling liquid to cool the recovered gas and into the intake passage of the internal combustion engine, the method comprising:
  • the opening degree of the valve provided in the exhaust port of the EGR and the opening of the valve provided in the EGR intake port are adjusted according to the change of the gas temperature and the change of the intake air flow rate of the intake port of the EGR.
  • a control device for vehicle exhaust gas recirculation for vehicle exhaust gas recirculation.
  • the GPF/DPF of the vehicle processes the gas discharged from the internal combustion engine and then discharges it to the exhaust passage, and the gas discharged from the GPF/DPF can be recycled into the EGR, and the EGR uses the cooling liquid to cool the recovered gas and into the intake passage of the internal combustion engine
  • the device includes:
  • a first control module for controlling the EGR to cool the recovered gas to a minimum gas temperature required to enter the internal combustion engine before the GPF/DPF starts working
  • the second control module is configured to adjust the opening degree of the valve provided in the exhaust port of the EGR according to the change of the gas temperature and the change of the intake air flow of the intake port of the EGR after the GPF/DPF starts working and the working power of the pump provided in the liquid inlet pipe of the EGR, so that the EGR cools the gas recovered by the EGR to a safe temperature range required for entering the internal combustion engine.
  • an electronic device comprising:
  • the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method provided by any embodiment of the present application.
  • a non-transitory computer-readable storage medium storing computer instructions, where the computer instructions are used to cause the computer to execute the method provided by the embodiments of the present application.
  • the GPF/DPF is controlled in association with the EGR cooling system to ensure that the recovered exhaust gas temperature and the EGR rate are within an appropriate range.
  • FIG. 1 is a schematic diagram according to a first embodiment of the present application.
  • FIG. 2 is a schematic diagram according to a second embodiment of the present application.
  • FIG. 3 is a schematic diagram according to a third embodiment of the present application.
  • FIG. 4 is a schematic diagram according to a fourth embodiment of the present application.
  • FIG. 5 is a schematic diagram of an application according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram according to a fifth embodiment of the present application.
  • FIG. 7 is a schematic diagram according to a sixth embodiment of the present application.
  • FIG. 8 is a block diagram of an electronic device for implementing the control method for vehicle exhaust gas recirculation according to an embodiment of the present application.
  • FIG. 1 shows a schematic diagram of a control method for vehicle exhaust gas recirculation according to an embodiment of the present application. As shown in FIG. 1 , the method includes:
  • Step S100 before the GPF/DPF starts to work, control the EGR to cool the recovered gas to the minimum gas temperature required to enter the internal combustion engine.
  • Step S200 After the GPF/DPF starts working, adjust the opening degree of the valve set in the EGR exhaust port and the valve set in the EGR liquid inlet pipe according to the gas temperature change and the intake flow change of the EGR intake port.
  • the operating power of the pump to cool the gas recovered by the EGR to the safe temperature range required to enter the internal combustion engine.
  • the temperature of the gas recovered by EGR is lowered in advance, so as to avoid a relative increase in the temperature of the gas recovered by EGR caused when the GPF/DPF enters operation. Since GPF/DPF has a secondary heating effect on the gas discharged from the internal combustion engine, the temperature of the treated gas increases relatively, and the flow rate also increases. Therefore, after the GPF/DPF starts working, EGR performs corresponding cooling control. , that is, controlling the opening of the valve of the exhaust port of EGR and the working power of the pump set in the liquid inlet pipe can effectively control the temperature of the gas recovered by EGR within a safe temperature range, thereby optimizing the emission of NO X.
  • FIG. 2 shows a schematic diagram of the positional relationship between GPF/DPF and EGR in a vehicle according to an embodiment of the present application.
  • the GPF/DPF is located in the exhaust passage of the vehicle, which processes the gas exhausted from the internal combustion engine and then discharges it into the exhaust passage.
  • the gas discharged from the GPF/DPF into the exhaust passage can be recovered to the EGR.
  • the cooling liquid flows in from the liquid inlet of the EGR, and the heat exchanger of the EGR uses the cooling liquid to cool the recovered gas, and discharges the cooled gas into the intake passage of the internal combustion engine through the exhaust port to enter the internal combustion engine again. combustion, and drain the coolant from the liquid outlet.
  • the cooling liquid can be tap water, seawater and other liquids that can absorb heat.
  • step S100 the temperature of the gas recovered in the EGR can be controlled by controlling the amount of coolant flowing into the EGR.
  • this step S100 may include:
  • step S110 the gas temperature and the intake flow rate of the air inlet, the liquid temperature of the liquid inlet and the liquid temperature of the liquid outlet are obtained from the EGR.
  • Step S120 Determine the amount of cooling liquid required by the EGR to cool the recovered gas to the minimum gas temperature according to the gas temperature and flow rate of the gas inlet, the liquid temperature of the liquid inlet and the liquid temperature of the liquid outlet.
  • Step S130 according to the amount of cooling liquid required by the EGR to cool the recovered gas to the minimum gas temperature, adjust the working power of the pump provided in the liquid inlet pipe of the EGR.
  • the energy required to reduce the gas in the EGR from the temperature T1 to the temperature T2 is equal to the energy released by the cooling liquid in the EGR from the temperature T3 to the temperature T4.
  • the gas temperature and intake flow rate of the intake port, the liquid temperature of the liquid inlet and the liquid temperature of the liquid outlet are obtained, and combined with the specific heat capacity of the gas and the specific heat capacity of the cooling liquid, it can be converted to reduce the gas temperature to enter the internal combustion engine.
  • the air inlet, air outlet, liquid inlet and liquid outlet of the EGR can be provided with temperature sensors to transmit the detected temperature to the processor.
  • the amount of coolant required by EGR to cool the recovered gas to the set temperature can be calculated using the following formula:
  • Q l is the amount of coolant required by EGR to cool the recovered gas to the set temperature
  • C g is the specific heat capacity of the gas at the EGR intake port
  • Q g is the intake air flow rate of the EGR intake port
  • T i is the air inlet gas temperature of EGR
  • T b is the EGR to the recovered gas is cooled to the lowest temperature of the gas entering the engine
  • C l is the specific heat capacity of the cooling liquid of EGR
  • T l1 is the liquid temperature at the liquid inlet of the EGR.
  • step S200 according to the change of the gas temperature and the change of the intake air flow of the intake port of the EGR, the opening degree of the valve provided in the exhaust port of the EGR is controlled and the The working power of the pump set in the inlet pipe of the EGR to control the EGR to cool the recovered gas to the safe temperature range required to enter the internal combustion engine, which may include:
  • Step S210 determine the change of the gas temperature and the change of the intake air flow of the intake port of the EGR.
  • Step S220 Determine the EGR rate of the EGR and the amount of cooling liquid required to cool the temperature of the gas recovered by the EGR to a safe temperature range according to the change in the gas temperature of the EGR intake port and the change in the intake flow rate.
  • step S230 the opening degree of the valve provided in the exhaust port of the EGR is set using the EGR rate.
  • Step S240 Set the working power of the pump provided in the liquid inlet pipe of the EGR by using the amount of cooling liquid required to cool the temperature of the gas recovered by the EGR to a safe temperature range.
  • the acquisition of the EGR rate can be as follows: when the GPF/DPF is marked in the early stage, acquire and record the EGR rate flow at different speeds, powers, and gas temperatures;
  • the gas temperature at the gas port determines the exhaust gas rate.
  • the nominal flow is the ideal exhaust gas recovery for the system at the set EGR rate. This calibrated flow rate is used to calculate the amount of coolant required to cool the temperature of the gas recovered by EGR to a safe temperature range.
  • the amount of cooling liquid required to cool the temperature of the gas recovered by EGR to a safe temperature range can be calculated according to the following formula:
  • Q l is the amount of coolant required to cool the temperature of the gas recovered by EGR to a safe temperature
  • C g is the specific heat capacity of the gas at the intake port of EGR
  • Q is the calibrated flow rate of the intake port of EGR
  • T i is the gas temperature at the intake port of the EGR
  • T b is the minimum gas temperature required by the EGR to cool the recovered gas to the internal combustion engine
  • C l is the specific heat capacity of the coolant of the EGR
  • T l2 is the temperature of the liquid outlet of the EGR Liquid temperature
  • T l1 is the liquid temperature at the liquid inlet of the EGR.
  • the opening degree of the valve of the exhaust port of the EGR and the working power of the pump of the liquid inlet pipe of the EGR are preliminarily determined according to the above steps S210 to S240.
  • valve opening of the EGR exhaust port and the operating power of the pump of the EGR intake pipe are adjusted according to the change in the gas temperature and the intake flow rate of the EGR intake port.
  • the processor in the event of an increase in gas temperature or an increase in intake air flow at the intake port of the EGR, performs the following operations:
  • the working power of the pump provided in the liquid inlet pipe of the EGR is set by using the determined amount of cooling liquid required to cool the temperature of the gas recovered by the EGR to a safe temperature.
  • changes in the gas temperature of the intake port of the EGR and changes in the intake air flow rate may be detected at regular intervals. If the gas temperature of the intake port of the EGR increases or the intake air flow rate increases, the above operation may be continued. For example, every 10 seconds, every minute, or irregular intervals, etc.
  • the processor performs the following actions:
  • the working power of the pump provided in the liquid inlet pipe of the EGR is set by using the determined amount of cooling liquid required to cool the temperature of the gas recovered by the EGR to a safe temperature.
  • changes in the gas temperature of the intake port of the EGR and changes in the intake air flow rate may be detected at regular intervals. For example, every 10 seconds, every minute, or irregular intervals, etc.
  • the changes of the gas temperature and the flow of the intake air at the intake port of the EGR may be detected again immediately or after a period of time, so as to detect The situation again decides whether to finish setting the valve opening and the working power of the pump.
  • the processor can Stop adjusting the opening of the valve of the EGR exhaust port and the working power of the pump in the intake pipe.
  • the working power of the pump provided in the liquid inlet pipe of the EGR by using the amount of cooling liquid required to cool the temperature of the gas recovered by the EGR to a safe temperature range
  • FIG. 5 shows a flowchart of an application example of the vehicle exhaust gas recirculation according to the embodiment of the present application.
  • Step S11 the engine of the vehicle starts to work.
  • Step S12 the processor determines whether the GPF/DPF needs to work. If the GPF/DPF needs to work, go to step S13; if the GPF/DPF does not need to work, go to step S25.
  • Step S13 the processor calculates the amount of cooling liquid. Exemplarily, it can be calculated according to the above steps S110 and S120.
  • Step S14 the processor increases the working power of the water pump according to the calculated amount of cooling liquid.
  • Step S15 the processor determines whether the temperature of the gas recovered by the EGR after passing through the heat exchanger is lowered to T b .
  • T b is the gas enters the internal combustion engine (engine) of the desired minimum temperature. If the temperature of the gas is lower than T b , the combustion of the internal combustion engine will be insufficient, and the efficiency will be lowered. If the temperature of the gas recovered by EGR after passing through the heat exchanger does not drop to T b , return to step S14 and continue to increase the power of the water pump. If the temperature of the gas recovered by EGR has decreased to T b after passing through the heat exchanger, then continue to perform step S16 .
  • Step S16 the processor starts the GPF/DPF to start working.
  • Step S17 the processor obtains the temperature T and flow rate Q g of the gas at the intake port of the EGR.
  • Step S18 the processor obtains the EGR rate according to the obtained temperature T and flow rate Q g of the gas at the intake port of the EGR, and adjusts the EGR valve according to the EGR rate.
  • Step S19 the processor calculates the amount of cooling liquid required to reduce the temperature of the gas recovered by EGR to be between T b and T p according to the obtained temperature T of the gas at the EGR inlet and the EGR rate.
  • Step S20 the processor increases the working power of the water pump according to the calculated amount of cooling liquid.
  • Step S21 the processor determines EGR gas recovered through the heat exchanger temperature T is between B and T T p. If it is between T b and T p , step S22 is performed. If it is not between T b and T p , return to and continue to execute step S20 to continue to increase the working power of the water pump.
  • step S22 the processor obtains the temperature T and the flow rate Q g of the gas at the intake port of the EGR again, and judges the changes in the temperature and flow rate of the gas at the intake port. If the temperature of the gas at the intake port increases or the intake air flow rate increases, the process returns to step S18. If the temperature of the gas at the intake port decreases or the intake air flow rate decreases, step S23 is continued.
  • Step S23 the processor determines whether the GPF/DPF stops working. If the GPF/DPF stops working, step S24 is performed. If the GPF/DPF does not stop working, return to step S18.
  • Step S24 the processor determines whether the temperature of the gas at the intake port of the EGR returns to the normal temperature range. If the temperature of the gas at the intake port of the EGR has returned to the normal temperature range, step S25 is executed. If the temperature of the gas at the intake port of the EGR does not return to the normal temperature range, the process returns to step S26.
  • Step S25 the processor quits work.
  • FIG. 6 shows a structural diagram of a vehicle exhaust gas recirculation control device according to an embodiment of the present application.
  • the GPF/DPF of the vehicle processes the gas discharged from the internal combustion engine and then discharges it to the exhaust passage, and the gas discharged from the GPF/DPF can be recycled into the EGR, and the EGR uses the coolant to cool the recovered gas and discharge it into in the intake passage of the internal combustion engine.
  • the apparatus 100 may include:
  • the first control module 110 is configured to control the EGR to cool the recovered gas to the minimum gas temperature required to enter the internal combustion engine before the GPF/DPF starts to work.
  • the second control module 120 is configured to adjust the opening degree of the valve provided in the exhaust port of the EGR and the opening of the valve provided in the EGR intake port according to the change of the gas temperature of the intake port of the EGR and the change of the intake air flow after the GPF/DPF starts working.
  • the operating power of the pump in the intake line to allow the EGR to cool the gas it recycles to the safe temperature range required to enter the internal combustion engine.
  • the first control module 110 includes:
  • the first obtaining unit 111 is used to obtain the gas temperature and the intake flow rate of the intake port, the liquid temperature of the liquid inlet and the liquid temperature of the liquid outlet from the EGR;
  • the first calculation unit 112 is configured to determine the cooling required by EGR to cool the recovered gas to the minimum gas temperature according to the gas temperature and the intake flow rate of the intake port, the liquid temperature of the liquid inlet and the liquid temperature of the liquid outlet liquid volume;
  • the first setting unit 113 is configured to adjust the working power of the pump provided in the liquid inlet pipe of the EGR according to the amount of cooling liquid required by the EGR to cool the recovered gas to the minimum gas temperature.
  • the calculation formula used by the first calculation unit 120 is as follows:
  • Q l is the amount of coolant required by EGR to cool the recovered gas to the set temperature
  • C g is the specific heat capacity of the gas at the EGR intake port
  • Q g is the intake air flow rate of the EGR intake port
  • T i is the air inlet gas temperature of EGR
  • T b is the EGR to the recovered gas is cooled to the lowest temperature of the gas entering the engine
  • C l is the specific heat capacity of the cooling liquid of EGR
  • T l1 is the liquid temperature at the liquid inlet of the EGR
  • the second control module 120 includes:
  • the second obtaining unit 121 is used to determine the change of the gas temperature and the change of the intake air flow of the intake port of the EGR;
  • the second calculation unit 122 is configured to determine the EGR rate of the EGR and the amount of cooling liquid required to cool the temperature of the gas recovered by the EGR to a safe temperature range by using the gas temperature change and the intake flow rate change of the EGR intake port ;
  • the third setting unit 123 is configured to use the EGR rate to set the opening degree of the valve provided in the exhaust port of the EGR;
  • the fourth setting unit 124 is used for setting the working power of the pump provided in the liquid inlet pipe of the EGR by using the amount of cooling liquid required to cool the temperature of the gas recovered by the EGR to a safe temperature range.
  • the second calculation unit 122 is further configured to: re-determine the EGR rate and re-determine the amount of the gas recovered by EGR when the gas temperature of the EGR intake port increases or the intake air flow rate increases.
  • the third setting unit 123 is for setting the opening degree of the valve provided in the EGR exhaust port using the newly determined EGR rate.
  • the fourth setting unit 124 is used for setting the working power of the pump provided in the liquid inlet pipe of the EGR by using the newly determined amount of cooling liquid required to cool the temperature of the gas recovered by the EGR to a safe temperature range.
  • the second calculation unit 122 is further configured to reduce the gas temperature of the intake port of EGR or reduce the intake air flow, and the GPF/DPF does not stop working, or when the gas temperature of the intake port of EGR decreases or When the intake air flow is reduced and the GPF/DPF has stopped working but the gas temperature of the EGR intake port has not returned to the normal temperature range of the intake port, the EGR rate is re-determined, and the gas recovered by EGR is re-determined The amount of coolant required to cool the temperature to a safe temperature range.
  • the third setting unit 123 is used to set the opening degree of the valve provided in the EGR exhaust port using the newly determined EGR rate.
  • the fourth setting unit 124 is used for setting the working power of the pump provided in the liquid inlet pipe of the EGR by using the newly determined amount of cooling liquid required to cool the temperature of the gas recovered by the EGR to a safe temperature.
  • the second control module 120 further includes:
  • the judging unit 125 is used to judge the amount of coolant recovered by EGR after setting the working power of the pump arranged in the liquid inlet pipe of EGR by using the amount of cooling liquid required to cool the temperature of the gas recovered by EGR to a safe temperature range. Whether the temperature of the gas after passing through the heat exchanger is within the safe temperature range;
  • the power increasing unit 126 is configured to continue to increase the working power of the pump until the temperature of the gas recovered by EGR after passing through the heat exchanger if the temperature of the gas recovered by EGR after passing through the heat exchanger is not within the safe temperature range within a safe temperature range.
  • the calculation formula used by the second calculation unit includes:
  • Q l is the amount of coolant required to cool the temperature of the gas recovered by EGR to a safe temperature range
  • C g is the specific heat capacity of the gas at the intake port of EGR
  • Q is the calibrated flow rate of the intake port of EGR
  • T i is the gas temperature of the EGR intake port
  • T b is the minimum gas temperature required by the EGR to cool the recovered gas to the internal combustion engine
  • C l is the specific heat capacity of the EGR coolant
  • T l2 is the EGR liquid outlet
  • T l1 is the liquid temperature of the EGR inlet.
  • FIG. 8 it is a block diagram of an electronic device of a method for controlling exhaust gas recirculation of a vehicle according to an embodiment of the present application.
  • Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers.
  • Electronic devices may also represent various forms of mobile devices, such as personal digital processors, cellular phones, smart phones, wearable devices, and other similar computing devices.
  • the components shown herein, their connections and relationships, and their functions are by way of example only, and are not intended to limit implementations of the application described and/or claimed herein.
  • the electronic device includes: one or more processors 601, a memory 602, and interfaces for connecting various components, including a high-speed interface and a low-speed interface.
  • the various components are interconnected using different buses and may be mounted on a common motherboard or otherwise as desired.
  • the processor may process instructions executed within the electronic device, including instructions stored in or on memory to display graphical information of the GUI on an external input/output device, such as a display device coupled to an interface.
  • multiple processors and/or multiple buses may be used with multiple memories and multiple memories, if desired.
  • multiple electronic devices may be connected, each providing some of the necessary operations (eg, as a server array, a group of blade servers, or a multiprocessor system).
  • a processor 601 is taken as an example in FIG. 6 .
  • the memory 602 is the non-transitory computer-readable storage medium provided by the present application.
  • the memory stores instructions executable by at least one processor, so that the at least one processor executes the vehicle exhaust gas recirculation control method provided by the present application.
  • the non-transitory computer-readable storage medium of the present application stores computer instructions for causing the computer to execute the control method for vehicle exhaust gas recirculation provided by the present application.
  • the memory 602 can be used to store non-transitory software programs, non-transitory computer-executable programs and modules, such as program instructions/modules corresponding to the control method for vehicle exhaust gas recirculation in the embodiments of the present application (For example, the acquisition module 410, the first determination module 420, and the second determination module 430 shown in FIG. 4).
  • the processor 601 executes various functional applications and data processing of the server by running the non-transitory software programs, instructions and modules stored in the memory 602 , that is, to implement the vehicle exhaust gas recirculation control method in the above method embodiments.
  • the memory 602 may include a stored program area and a stored data area, wherein the stored program area may store an operating system, an application program required for at least one function; created data, etc. Additionally, memory 602 may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory 602 may optionally include memory located remotely relative to the processor 601, and these remote memories may be connected via a network to the electronics of the vehicle exhaust gas recirculation control method. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.
  • the electronic device of the control method of the vehicle exhaust gas recirculation may further include: an input device 603 and an output device 604 .
  • the processor 601 , the memory 602 , the input device 603 and the output device 604 may be connected by a bus or in other ways, and the connection by a bus is taken as an example in FIG. 6 .
  • the input device 603 can receive input numerical or character information, and key signal input for generating user settings and function control of electronic equipment related to the control method of the vehicle exhaust gas recirculation, such as a touch screen, a keypad, a mouse, a trackpad, a touchpad , pointing stick, one or more mouse buttons, trackball, joystick and other input devices.
  • Output devices 604 may include display devices, auxiliary lighting devices (eg, LEDs), haptic feedback devices (eg, vibration motors), and the like.
  • the display device may include, but is not limited to, a liquid crystal display (LCD), a light emitting diode (LED) display, and a plasma display. In some implementations, the display device may be a touch screen.
  • Various implementations of the systems and techniques described herein can be implemented in digital electronic circuitry, integrated circuit systems, application specific ASICs (application specific integrated circuits), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include being implemented in one or more computer programs executable and/or interpretable on a programmable system including at least one programmable processor that The processor, which may be a special purpose or general-purpose programmable processor, may receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device an output device.
  • the processor which may be a special purpose or general-purpose programmable processor, may receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device an output device.
  • machine-readable medium and “computer-readable medium” refer to any computer program product, apparatus, and/or apparatus for providing machine instructions and/or data to a programmable processor ( For example, magnetic disks, optical disks, memories, programmable logic devices (PLDs), including machine-readable media that receive machine instructions as machine-readable signals.
  • machine-readable signal refers to any signal used to provide machine instructions and/or data to a programmable processor.
  • the systems and techniques described herein may be implemented on a computer having a display device (eg, a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user ); and a keyboard and pointing device (eg, a mouse or trackball) through which a user can provide input to the computer.
  • a display device eg, a CRT (cathode ray tube) or LCD (liquid crystal display) monitor
  • a keyboard and pointing device eg, a mouse or trackball
  • Other kinds of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (eg, visual feedback, auditory feedback, or tactile feedback); and can be in any form (including acoustic input, voice input, or tactile input) to receive input from the user.
  • the systems and techniques described herein may be implemented on a computing system that includes back-end components (eg, as a data server), or a computing system that includes middleware components (eg, an application server), or a computing system that includes front-end components (eg, a user's computer having a graphical user interface or web browser through which a user may interact with implementations of the systems and techniques described herein), or including such backend components, middleware components, Or any combination of front-end components in a computing system.
  • the components of the system may be interconnected by any form or medium of digital data communication (eg, a communication network). Examples of communication networks include: Local Area Networks (LANs), Wide Area Networks (WANs), and the Internet.
  • a computer system can include clients and servers.
  • Clients and servers are generally remote from each other and usually interact through a communication network.
  • the relationship of client and server arises by computer programs running on the respective computers and having a client-server relationship to each other.
  • the network access record can be used to determine the jump relationship set of each address in the network, so that the jump relationship set can be used to determine the final address of the address to be searched for the address to be searched. Therefore, it is possible to track the network addresses masked by VPNs, which is beneficial to network security supervision.

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Abstract

提供了一种车辆废气再循环的控制方法、装置和电子设备，涉及车辆领域。在GPF/DPF（6）启动工作前，控制EGR将回收到的气体冷却到进入内燃机所要求的最低气体温度（S100）；以及在GPF/DPF（6）启动工作后，依据EGR的进气口的气体温度变化和进气流量变化，调整设在EGR的排气口中的阀门（8）的开度和设在EGR的进液管中的泵（10）的工作功率，以使EGR将其回收到的气体冷却到进入内燃机所要求的安全温度范围（S200）。控制方法可以将GPF/DPF与EGR的冷却系统相关联控制，保证回收的废气温度以及EGR率在合适的范围内。

Description

车辆废气再循环的控制方法、装置和电子设备 技术领域
本申请涉及车辆的技术领域，尤其涉及车辆废气再循环的控制方法、装置和电子设备。
背景技术
GPF(Gasoline Particulate Filter，汽油机颗粒捕集器)是一种安装在汽油发动机排放系统的陶瓷过滤器，它可以在微粒排放物质进入大气之前将其捕捉。DPF(Diesel Particulate Filter，柴油机颗粒捕捉器)一种安装在柴油发动机排放系统中的陶瓷过滤器，它可以在微粒排放物质进入大气之前将其捕捉。
为了保护环境，车辆的排放标准越来越高。逐步加深对大排量的汽车的限制，并加大对小排量汽车的推广。但是，小排量的汽车的输出功率高，导致发动机内的燃烧温度高，会产生大量的NO X，污染环境。因此，车辆的排气系统一般装有GPF或DPF来解决内燃机排放的燃烧颗粒物，减少排出气体中包含的污染物NO X，保护环境。
为了降低内燃机产生的NO X，市面上的车辆大多数也采用了EGR(Exhaust Gas Re-circulation，废气再循环)。EGR把发动机排出的部分废气回送到进气歧管，并与新鲜混合气一起再次进入气缸。由于废气中含有大量的CO 2等多原子气体，而CO 2等气体不能燃烧却由于其比热容高而吸收大量的热，使气缸中混合气的最高燃烧温度降低，从而减少了NO X的生成量。
但是，GPF或DPF也是应用在车辆的排气系统中，其会导致发动机在燃烧废气的过程温度的提高，废气的气流量的增大。GPF或DPF与EGR是相互独立工作，GPF或DPF处理后的气体会回收到EGR中，这样EGR也会面临气体温度升高和气流量增大的问题，进而难以减少NO X的生成量，降低EGR的工作效率。
发明内容
本申请提供一种车辆废气再循环的控制方法、装置和电子设备，以解决或缓解现有技术中的一项或更多项技术问题。
根据本申请的一方面，提供了一种车辆废气再循环的控制方法。其中，车辆的GPF/DPF对内燃机排出的气体进行处理后排出到排气通道，且所述GPF/DPF排出的气体可回收到EGR中，所述EGR利用冷却液对回收到的气体进行降温并排入所述内燃机的进气通道中，所述方法包括：
在所述GPF/DPF启动工作前，控制所述EGR将回收到的气体冷却到进入所述内燃机所要求的最低气体温度；以及
在所述GPF/DPF启动工作后，依据所述EGR的进气口的气体温度变化和进气流量变化，调整设在所述EGR的排气口中的阀门的开度和设在所述EGR的进液管中的泵的工作功率，以使所述EGR将其回收到的气体冷却到进入所述内燃机所要求的安全温度范围。
根据本申请的一方面，提供了一种车辆废气再循环的控制装置。其中，车辆的GPF/DPF对内燃机排出的气体进行处理后排出到排气通道，且所述GPF/DPF排出的气体可回收到EGR中，所述EGR利用冷却液对回收到的气体进行降温并排入所述内燃机的进气通道中，所述装置包括：
第一控制模块，用于在所述GPF/DPF启动工作前，控制所述EGR将回收到的气体冷却到进入所述内燃机所要求的最低气体温度；以及
第二控制模块，用于在所述GPF/DPF启动工作后，依据所述EGR的进气口的气体温度变化和进气流量变化，调整设在所述EGR的排气口中的阀门的开度和设在所述EGR的进液管中的泵的工作功率，以使所述EGR将其回收到的气体冷却到进入所述内燃机所要求的安全温度范围。
根据本申请的一方面，提供了一种电子设备，包括：
至少一个处理器；以及
与所述至少一个处理器通信连接的存储器；其中
所述存储器存储有可被所述至少一个处理器执行的指令，所述指令被所述至少一个处理器执行，以使所述至少一个处理器能够执行本申请任意实施例提 供的方法。
根据本申请的一方面，提供了一种存储有计算机指令的非瞬时计算机可读存储介质，所述计算机指令用于使所述计算机执行本申请实施例提供的方法。
根据本申请实施例，将GPF/DPF与EGR的冷却系统相关联控制，保证回收的废气温度以及EGR率在合适的范围内。
应当理解，本部分所描述的内容并非旨在标识本申请的实施例的关键或重要特征，也不用于限制本申请的范围。本申请的其它特征将通过以下的说明书而变得容易理解。
附图说明
在附图中，除非另外规定，否则贯穿多个附图相同的附图标记表示相同或相似的部件或元素。这些附图不一定是按照比例绘制的。应该理解，这些附图仅描绘了根据本申请公开的一些实施方式，而不应将其视为是对本申请范围的限制。
图1是根据本申请第一实施例的示意图；
图2是根据本申请第二实施例的示意图；
图3是根据本申请第三实施例的示意图；
图4是根据本申请第四实施例的示意图；
图5是根据本申请实施例的应用示意图；
图6是根据本申请第五实施例的示意图；
图7是根据本申请第六实施例的示意图
图8是用于实现本申请实施例的车车废气再循环的控制方法的电子设备的框图。
附图标记：
进气歧管-1、发动机-2、排气歧管-3、涡轮-4、增压器-5、GPF/DPF-6、EGR的进气管-7、EGR在排气口中的阀门-8、换热器-9、水泵-10、温度传感器-11、进气系统-12、进气通道-13、EGR的排气管-14、高压进气管-15、低温冷却水管-16、高温冷却水管-17、散热器-18。
具体实施方式
在下文中，仅简单地描述了某些示例性实施例。正如本领域技术人员可认识到的那样，在不脱离本申请的精神或范围的情况下，可通过各种不同方式修改所描述的实施例。因此，附图和描述被认为本质上是示例性的而非限制性的。
图1示出了本申请实施例的车辆废气再循环的控制方法的示意图，如图1所示，该方法包括：
步骤S100、在GPF/DPF启动工作前，控制EGR将回收到的气体冷却到进入内燃机所要求的最低气体温度。
步骤S200、在GPF/DPF启动工作后，依据EGR的进气口的气体温度变化和进气流量变化，调整设在EGR的排气口中的阀门的开度和设在EGR的进液管中的泵的工作功率，以将EGR将其回收到的气体冷却到进入内燃机所要求的安全温度范围。
本申请实施例中，在GPF/DPF准备工作之前，提前降低EGR回收到的气体的温度，避免GPF/DPF进入工作的瞬间而导致的EGR回收到的气体温度相对升高。由于GPF/DPF对内燃机排出的气体有二次加热的效果，其处理后的气体温度相对来说升高，且流量也增大，因而，在GPF/DPF启动工作之后，EGR进行相应的降温控制，即控制EGR的排气口的阀门的开度以及进液管所设的泵的工作功率，可以有效地将EGR回收的气体的温度控制在安全温度范围内，从而优化NO X的排放。
图2示出了本申请实施例的GPF/DPF与EGR在车辆中的位置关系的示意图。如图2所示，GPF/DPF位于车辆的排气通道内，其对内燃机排出的气体进行处理后再排到排气通道中。GPF/DPF排出到排气通道内的气体可以回收到EGR。冷却液从EGR的进液口流入，EGR的换热器利用冷却液对回收到的气体进行降温，并将降温后的气体通过排气口排入内燃机的进气通道中以再次进入到内燃机中燃烧，以及从出液口排出冷却液。冷却液可以是自来水、海水等可吸热的液体。
在一种示例性的实施方式中，在步骤S100中，通过控制流进EGR的冷却 液量可以控制EGR中回收到的气体的温度。参见图3，该步骤S100可以包括：
步骤S110、从EGR中获取进气口的气体温度和进气流量、进液口的液体温度和出液口的液体温度。
步骤S120、根据进气口的气体温度和进气流量、进液口的液体温度和出液口的液体温度，确定EGR将回收到的气体冷却到最低气体温度所需要的冷却液量。
步骤S130、根据EGR将回收到的气体冷却到最低气体温度所需要的冷却液量，调整设在EGR的进液管中的泵的工作功率。
利用能量守恒定律可知，在EGR换热器中，将EGR中的气体从温度T1降到温度T2所需要的能量等于EGR中的冷却液从温度T3降到温度T4所释放的能量。依据此，获取进气口的气体温度和进气流量、进液口的液体温度和出液口的液体温度，并且结合气体的比热容和冷却液的比热容，可以换算出将气体温度降到进入内燃机所要求的最低气体温度所需要的冷却液量。
其中，EGR的进气口、出气口、进液口和出液口可以设置温度传感器，将检测到的温度传给处理器。
示例性地，利用下面的公式可以计算出EGR将回收到的气体冷却到设定的温度所需要的冷却液量：
Figure PCTCN2021099899-appb-000001
其中，Q l是EGR将回收到的气体冷却到设定的温度所需要的冷却液量，C g是EGR的进气口的气体的比热容，Q g是EGR的进气口的进气流量，T i是EGR的进气口的气体温度，T b是EGR将回收到的气体冷却到进入内燃机的最低气体温度，C l是EGR的冷却液的比热容，T l2是EGR的出液口的液体温度，T l1是EGR的进液口的液体温度。
在一个示例性的实施方式中，在步骤S200中，如图4所示，根据EGR的进气口的气体温度变化和进气流量变化，控制设在EGR的排气口中的阀门的开度和设在EGR的进液管中的泵的工作功率，以控制EGR将其回收到的气体冷却到进入内燃机所要求的安全温度范围，可以包括：
步骤S210、确定EGR的进气口的气体温度变化和进气流量变化。
步骤S220、根据EGR的进气口的气体温度变化和进气流量变化，确定EGR的EGR率、将EGR回收到的气体的温度冷却到安全温度范围内所需的冷却液量。
步骤S230、利用EGR率，设置设在EGR的排气口中的阀门的开度。
步骤S240、利用将EGR回收到的气体的温度冷却到安全温度范围内所需的冷却液量，设置设在EGR的进液管中的泵的工作功率。
由于GPF/DPF处于正在工作的状态，则EGR进气的气体温度变化、进气流量变化，反应着GPF/DPF处理后的气体温度变化及进入到EGR的进气流量变化。因此，对于EGR率的获取，可以如下：在前期标记GPF/DPF时获取并记录不同转速、功率、气体温度下的EGR率流量；在需要获取EGR率时，根据当前EGR的转速、功率以及进气口的气体温度，确定废气率。标定流量是系统在设定的EGR率下的理想废气回收量。此标定流量用于计算EGR回收到的气体的温度冷却到安全温度范围内所需的冷却液量。
示例性，对于EGR回收到的气体的温度冷却到安全温度范围内所需的冷却液量，可以依据下面的公式计算出来：
Figure PCTCN2021099899-appb-000002
其中，Q l是将EGR回收到的气体的温度冷却到安全温度内所需的冷却液量，C g是EGR的进气口的气体的比热容，Q是EGR的进气口的标定流量，T i是EGR的进气口的气体温度，T b是EGR将回收到的气体冷却到进入内燃机所要求的最低气体温度，C l是EGR的冷却液的比热容，T l2是EGR的出液口的液体温度，T l1是EGR的进液口的液体温度。
在依据上述步骤S210至步骤S240初步确定EGR的排气口的阀门的开度以及EGR的进液管的泵的工作功率。
然后，继续根据根据EGR的进气口的气体温度变化和进气流量变化，调整EGR的排气口的阀门的开度和EGR的进液管的泵的工作功率。
在一个示例性的实施方式中，在EGR的进气口的气体温度升高或进气流量 增大的情况下，处理器执行以下操作：
确定EGR率；
确定将EGR回收到的气体的温度冷却到安全温度内所需的冷却液量；
利用确定的EGR率，设置设在EGR排气口中的阀门的开度；
利用确定的将EGR回收到的气体的温度冷却到安全温度内所需的冷却液量，设置设在EGR的进液管中的泵的工作功率。
示例性地，可以每隔一段时间检测EGR的进气口的气体温度变化和进气流量变化的情况。如果EGR的进气口的气体温度升高或进气流量增大，则可以继续执行以上操作。例如，每隔10秒钟、每隔一分钟，或者不规则的间隔时间段等。
在一个示例性的实施方式中，在EGR的进气口的气体温度下降或进气流量减少，且GPF/DPF未停止工作的情况下，或者在EGR的进气口的气体温度下降或进气流量减少，且GPF/DPF已停止工作但EGR的进气口的气体温度未恢复到进气口的正常温度范围内的情况下，处理器执行以下操作：
确定EGR率；
确定将EGR回收到的气体的温度冷却到安全温度内所需的冷却液量；
利用确定的EGR率，设置设在EGR排气口中的阀门的开度；以及
利用确定的将EGR回收到的气体的温度冷却到安全温度内所需的冷却液量，设置设在EGR的进液管中的泵的工作功率。
示例性地，可以每隔一段时间检测EGR的进气口的气体温度变化和进气流量变化的情况。例如，每隔10秒钟、每隔一分钟，或者不规则的间隔时间段等。在一些实施例中，在设置完阀门的开度以及泵的工作功率之后，可以马上或隔一段时间后再次检测EGR的进气口的气体温度变化和进气流量变化的情况，以根据检测到的情况再次决定是否要设置完阀门的开度以及泵的工作功率。
如果EGR的进气口的气体温度下降或进气流量减少、GPF/DPF已停止工作且EGR的进气口的气体温度已恢复到进气口的正常温度范围内的情况下，处理器则可以停止调整EGR的排气口的阀门的开度以及进液管中的泵的工作功率。
在一个示例性的实施方式中，在利用将EGR回收到的气体的温度冷却到安 全温度范围内所需的冷却液量，设置设在EGR的进液管中的泵的工作功率之后，还可以包括：判断EGR回收到的气体在经过换热器后的温度是否在安全温度范围内，如果EGR回收到的气体在经过换热器后的温度不在安全温度范围内，则继续增大泵的工作功率，直至EGR回收到的气体在经过换热器后的温度在安全温度范围内。
图5示出本申请实施例的车辆废气再循环的应用示例的流程图。
步骤S11、车辆的发动机开始工作。
步骤S12、处理器判断GPF/DPF是否需要工作。如果GPF/DPF需要工作，则继续执行步骤S13；如果GPF/DPF不需要工作，则执行步骤S25。
步骤S13、处理器计算冷却液量。示例性，可以依据上述步骤S110和步骤S120计算得到。
步骤S14、处理器依据计算出来的冷却液量，增大水泵的工作功率。
步骤S15、处理器判断EGR回收到的气体在经过换热器后的温度是否降低至T b。T b是气体进入内燃机(发动机)所要求的最低温度。如果气体的温度低于T b，则会导致内燃机燃烧不充分，效率变低。如果EGR回收到的气体在经过换热器后的温度未降低至T b，则返回步骤S14，继续增大水泵的功率。如果EGR回收到的气体在经过换热器后的温度已降低至T b，则继续执行步骤S16。
步骤S16、处理器启动GPF/DPF开始工作。
步骤S17、处理器获取EGR的进气口的气体的温度T和流量Q g。
步骤S18、处理器根据获取的EGR的进气口的气体的温度T和流量Q g，获取EGR率，并依据EGR率调整EGR阀。
步骤S19、处理器根据获取的EGR的进气口的气体的温度T和EGR率，计算将EGR回收的气体的温度降低至T b和T p之间所需要的冷却液量。
步骤S20、处理器根据计算出来的冷却液量，增大水泵的工作功率。
步骤S21、处理器判断EGR回收到的气体在经过换热器后的温度T是否在T b和T p之间。如果在T b和T p之间，则执行步骤S22。如果不在T b和T p之间，则返回继续执行步骤S20，以继续增大水泵的工作功率。
步骤S22、处理器再次获取EGR的进气口的气体的温度T和流量Q g，并判 断进气口的气体温度变化和流量变化的情况。如果进气口的气体的温度升高或者进气流量增大，则返回执行步骤S18。如果进气口的气体的温度降低或者进气流量降低，则继续执行步骤S23。
步骤S23、处理器判断GPF/DPF是否停止工作。如果GPF/DPF停止工作，则执行步骤S24。如果GPF/DPF不停止工作，则返回执行步骤S18。
步骤S24、处理器判断EGR的进气口的气体的温度是否恢复到正常温度范围。如果EGR的进气口的气体的温度已恢复到正常温度范围，则执行步骤S25。如果EGR的进气口的气体的温度未恢复到正常温度范围，则返回执行步骤S26。
步骤S25、处理器退出工作。
图6示出了本申请实施例的车辆废气再循环的控制装置的结构图。在车辆中，车辆的GPF/DPF对内燃机排出的气体进行处理后排出到排气通道，且GPF/DPF排出的气体可回收到EGR中，EGR利用冷却液对回收到的气体进行降温并排入内燃机的进气通道中。如图6所示，该装置100可以包括：
第一控制模块110，用于在GPF/DPF启动工作前，控制EGR将回收到的气体冷却到进入内燃机所要求的最低气体温度。
第二控制模块120，用于在GPF/DPF启动工作后，依据EGR的进气口的气体温度变化和进气流量变化，调整设在EGR的排气口中的阀门的开度和设在EGR的进液管中的泵的工作功率，以使EGR将其回收到的气体冷却到进入内燃机所要求的安全温度范围。
示例性地，参见图7，第一控制模块110包括：
第一获取单元111，用于从EGR中获取进气口的气体温度和进气流量、进液口的液体温度和出液口的液体温度；
第一计算单元112，用于根据进气口的气体温度和进气流量、进液口的液体温度和出液口的液体温度，确定EGR将回收到的气体冷却到最低气体温度所需要的冷却液量；以及
第一设置单元113，用于根据EGR将回收到的气体冷却到最低气体温度所需要的冷却液量，调整设在EGR的进液管中的泵的工作功率。
示例性地，第一计算单元120所利用的计算公式如下：
Figure PCTCN2021099899-appb-000003
其中，Q l是EGR将回收到的气体冷却到设定的温度所需要的冷却液量，C g是EGR的进气口的气体的比热容，Q g是EGR的进气口的进气流量，T i是EGR的进气口的气体温度，T b是EGR将回收到的气体冷却到进入内燃机的最低气体温度，C l是EGR的冷却液的比热容，T l2是EGR的出液口的液体温度，T l1是EGR的进液口的液体温度
示例性地，参见图7，第二控制模块120包括：
第二获取单元121，用于确定EGR的进气口的气体温度变化和进气流量变化；
第二计算单元122，用于利用EGR的进气口的气体温度变化和进气流量变化，确定EGR的EGR率、将EGR回收到的气体的温度冷却到安全温度范围内所需的冷却液量；
第三设置单元123，用于利用EGR率，设置设在EGR的排气口中的阀门的开度；
第四设置单元124，用于利用将EGR回收到的气体的温度冷却到安全温度范围内所需的冷却液量，设置设在EGR的进液管中的泵的工作功率。
示例性地，第二计算单元122还用于：在EGR的进气口的气体温度升高或进气流量增大的情况下，则重新确定EGR率，以及重新确定将EGR回收到的气体的温度冷却到安全温度内所需的冷却液量。第三设置单元123用于利用重新确定的EGR率，设置设在EGR排气口中的阀门的开度。第四设置单元124用于利用重新确定的将EGR回收到的气体的温度冷却到安全温度范围内所需的冷却液量，设置设在EGR的进液管中的泵的工作功率。
示例性地，第二计算单元122还用于在EGR的进气口的气体温度下降或进气流量减少，且GPF/DPF未停止工作情况下，或者在EGR的进气口的气体温度下降或进气流量减少，且GPF/DPF已停止工作但EGR的进气口的气体温度未恢复到进气口的正常温度范围内的情况下，重新确定EGR率，以及重新确定将EGR回收到的气体的温度冷却到安全温度范围内所需的冷却液量。第三设置 单元123用于利用重新确定的EGR率，设置设在EGR排气口中的阀门的开度。第四设置单元124用于利用重新确定的将EGR回收到的气体的温度冷却到安全温度内所需的冷却液量，设置设在EGR的进液管中的泵的工作功率。
示例性地，第二控制模块120还包括：
判断单元125，用于在利用将EGR回收到的气体的温度冷却到安全温度范围内所需的冷却液量，设置设在EGR的进液管中的泵的工作功率之后，判断EGR回收到的气体在经过换热器后的温度是否在安全温度范围内；
功率增大单元126，用于如果EGR回收到的气体在经过换热器后的温度不在安全温度范围内，则继续增大泵的工作功率直至EGR回收到的气体在经过换热器后的温度在安全温度范围。
示例性地，第二计算单元所利用的计算公式包括：
Figure PCTCN2021099899-appb-000004
其中，Q l是将EGR回收到的气体的温度冷却到安全温度范围内所需的冷却液量，C g是EGR的进气口的气体的比热容，Q是EGR的进气口的标定流量，T i是EGR的进气口的气体温度，T b是EGR将回收到的气体冷却到进入内燃机所要求的最低气体温度，C l是EGR的冷却液的比热容，T l2是EGR的出液口的液体温度，T l1是EGR的进液口的液体温度。
如图8所示，其是根据本申请实施例的车辆废气再循环的控制方法的电子设备的框图。电子设备旨在表示各种形式的数字计算机，诸如，膝上型计算机、台式计算机、工作台、个人数字助理、服务器、刀片式服务器、大型计算机、和其它适合的计算机。电子设备还可以表示各种形式的移动装置，诸如，个人数字处理、蜂窝电话、智能电话、可穿戴设备和其它类似的计算装置。本文所示的部件、它们的连接和关系、以及它们的功能仅仅作为示例，并且不意在限制本文中描述的和/或者要求的本申请的实现。
如图8所示，该电子设备包括：一个或多个处理器601、存储器602，以及用于连接各部件的接口，包括高速接口和低速接口。各个部件利用不同的总线互相连接，并且可以被安装在公共主板上或者根据需要以其它方式安装。处理 器可以对在电子设备内执行的指令进行处理，包括存储在存储器中或者存储器上以在外部输入/输出装置(诸如，耦合至接口的显示设备)上显示GUI的图形信息的指令。在其它实施方式中，若需要，可以将多个处理器和/或多条总线与多个存储器和多个存储器一起使用。同样，可以连接多个电子设备，各个设备提供部分必要的操作(例如，作为服务器阵列、一组刀片式服务器、或者多处理器系统)。图6中以一个处理器601为例。
存储器602即为本申请所提供的非瞬时计算机可读存储介质。其中，存储器存储有可由至少一个处理器执行的指令，以使至少一个处理器执行本申请所提供的车辆废气再循环的控制方法。本申请的非瞬时计算机可读存储介质存储计算机指令，该计算机指令用于使计算机执行本申请所提供的车辆废气再循环的控制方法。
存储器602作为一种非瞬时计算机可读存储介质，可用于存储非瞬时软件程序、非瞬时计算机可执行程序以及模块，如本申请实施例中的车辆废气再循环的控制方法对应的程序指令/模块(例如，附图4所示的获取模块410、第一确定模块420和第二确定模块430)。处理器601通过运行存储在存储器602中的非瞬时软件程序、指令以及模块，从而执行服务器的各种功能应用以及数据处理，即实现上述方法实施例中的车辆废气再循环的控制方法。
存储器602可以包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需要的应用程序；存储数据区可存储根据车辆废气再循环的控制方法的电子设备的使用所创建的数据等。此外，存储器602可以包括高速随机存取存储器，还可以包括非瞬时存储器，例如至少一个磁盘存储器件、闪存器件、或其他非瞬时固态存储器件。在一些实施例中，存储器602可选包括相对于处理器601远程设置的存储器，这些远程存储器可以通过网络连接至车辆废气再循环的控制方法的电子设备。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
车辆废气再循环的控制方法的电子设备还可以包括：输入装置603和输出装置604。处理器601、存储器602、输入装置603和输出装置604可以通过总线或者其他方式连接，图6中以通过总线连接为例。
输入装置603可接收输入的数字或字符信息，以及产生与车辆废气再循环的控制方法的电子设备的用户设置以及功能控制有关的键信号输入，例如触摸屏、小键盘、鼠标、轨迹板、触摸板、指示杆、一个或者多个鼠标按钮、轨迹球、操纵杆等输入装置。输出装置604可以包括显示设备、辅助照明装置(例如，LED)和触觉反馈装置(例如，振动电机)等。该显示设备可以包括但不限于，液晶显示器(LCD)、发光二极管(LED)显示器和等离子体显示器。在一些实施方式中，显示设备可以是触摸屏。
此处描述的系统和技术的各种实施方式可以在数字电子电路系统、集成电路系统、专用ASIC(专用集成电路)、计算机硬件、固件、软件、和/或它们的组合中实现。这些各种实施方式可以包括：实施在一个或者多个计算机程序中，该一个或者多个计算机程序可在包括至少一个可编程处理器的可编程系统上执行和/或解释，该可编程处理器可以是专用或者通用可编程处理器，可以从存储系统、至少一个输入装置、和至少一个输出装置接收数据和指令，并且将数据和指令传输至该存储系统、该至少一个输入装置、和该至少一个输出装置。
这些计算程序(也称作程序、软件、软件应用、或者代码)包括可编程处理器的机器指令，并且可以利用高级过程和/或面向对象的编程语言、和/或汇编/机器语言来实施这些计算程序。如本文使用的，术语“机器可读介质”和“计算机可读介质”指的是用于将机器指令和/或数据提供给可编程处理器的任何计算机程序产品、设备、和/或装置(例如，磁盘、光盘、存储器、可编程逻辑装置(PLD))，包括，接收作为机器可读信号的机器指令的机器可读介质。术语“机器可读信号”指的是用于将机器指令和/或数据提供给可编程处理器的任何信号。
为了提供与用户的交互，可以在计算机上实施此处描述的系统和技术，该计算机具有：用于向用户显示信息的显示装置(例如，CRT(阴极射线管)或者LCD(液晶显示器)监视器)；以及键盘和指向装置(例如，鼠标或者轨迹球)，用户可以通过该键盘和该指向装置来将输入提供给计算机。其它种类的装置还可以用于提供与用户的交互；例如，提供给用户的反馈可以是任何形式的传感反馈(例如，视觉反馈、听觉反馈、或者触觉反馈)；并且可以用任何 形式(包括声输入、语音输入或者、触觉输入)来接收来自用户的输入。
可以将此处描述的系统和技术实施在包括后台部件的计算系统(例如，作为数据服务器)、或者包括中间件部件的计算系统(例如，应用服务器)、或者包括前端部件的计算系统(例如，具有图形用户界面或者网络浏览器的用户计算机，用户可以通过该图形用户界面或者该网络浏览器来与此处描述的系统和技术的实施方式交互)、或者包括这种后台部件、中间件部件、或者前端部件的任何组合的计算系统中。可以通过任何形式或者介质的数字数据通信(例如，通信网络)来将系统的部件相互连接。通信网络的示例包括：局域网(LAN)、广域网(WAN)和互联网。
计算机系统可以包括客户端和服务器。客户端和服务器一般远离彼此并且通常通过通信网络进行交互。通过在相应的计算机上运行并且彼此具有客户端-服务器关系的计算机程序来产生客户端和服务器的关系。
根据本申请的技术方案，利用网络访问记录，可以确定出网络中各地址的跳转关系集合，从而能够针对待查找地址，利用跳转关系集合确定待查找地址的最终地址。因此，可以追踪被翻墙VPN掩盖的网络地址，有利于网络安全监管。
应该理解，可以使用上面所示的各种形式的流程，重新排序、增加或删除步骤。例如，本发申请中记载的各步骤可以并行地执行也可以顺序地执行也可以不同的次序执行，只要能够实现本申请公开的技术方案所期望的结果，本文在此不进行限制。
上述具体实施方式，并不构成对本申请保护范围的限制。本领域技术人员应该明白的是，根据设计要求和其他因素，可以进行各种修改、组合、子组合和替代。任何在本申请的精神和原则之内所作的修改、等同替换和改进等，均应包含在本申请保护范围之内。

Claims (10)

  1. 一种车辆废气再循环的控制方法，其特征在于，车辆的GPF/DPF对内燃机排出的气体进行处理后排出到排气通道，且所述GPF/DPF排出的气体可回收到EGR中，所述EGR利用冷却液对回收到的气体进行降温并排入所述内燃机的进气通道中，所述方法包括：
    在所述GPF/DPF启动工作前，控制所述EGR将回收到的气体冷却到进入所述内燃机所要求的最低气体温度；以及
    在所述GPF/DPF启动工作后，依据所述EGR的进气口的气体温度变化和进气流量变化，调整设在所述EGR的排气口中的阀门的开度和设在所述EGR的进液管中的泵的工作功率，以使所述EGR将其回收到的气体冷却到进入所述内燃机所要求的安全温度范围。
  2. 如权利要求1所述的方法，其特征在于，控制所述EGR将回收到的气体冷却到进入所述内燃机所要求的最低气体温度，包括：
    从所述EGR中获取进气口的气体温度和进气流量、进液口的液体温度和出液口的液体温度；
    根据所述进气口的气体温度和进气流量、所述进液口的液体温度和所述出液口的液体温度，确定所述EGR将回收到的气体冷却到所述最低气体温度所需要的冷却液量；以及
    根据所述EGR将回收到的气体冷却到所述最低气体温度所需要的冷却液量，调整设在所述EGR的进液管中的泵的工作功率。
  3. 如权利要求2所述的方法，其特征在于，根据所述进气口的气体温度和进气流量、以及所述进液口的液体温度和所述出液口的液体温度，确定所述EGR将回收到的气体冷却到设定的温度所需要的冷却液量，包括：
    Figure PCTCN2021099899-appb-100001
    其中，Q l是所述EGR将回收到的气体冷却到设定的温度所需要的冷却液量，C g是所述EGR的进气口的气体的比热容，Q g是所述EGR的进气口的进气流量，T i是所述EGR的进气口的气体温度，T b是所述EGR将回收到的气体冷却到进入所述内燃机的最低气体温度，C l是所述EGR的 冷却液的比热容，T l2是所述EGR的出液口的液体温度，T l1是所述EGR的进液口的液体温度。
  4. 如权利要求1所述的方法，其特征在于，依据所述EGR的进气口的气体温度变化和进气流量变化，调整设在所述EGR的排气口中的阀门的开度和设在所述EGR的进液管中的泵的工作功率，以使所述EGR将其回收到的气体冷却到进入所述内燃机所要求的安全温度范围，包括：
    确定所述EGR的进气口的气体温度变化和进气流量变化；
    利用所述EGR的进气口的气体温度变化和进气流量变化，确定所述EGR的EGR率、将所述EGR回收到的气体的温度冷却到所述安全温度范围内所需的冷却液量；
    利用所述EGR率，设置设在所述EGR的排气口中的阀门的开度；
    利用将所述EGR回收到的气体的温度冷却到所述安全温度范围内所需的冷却液量，设置设在所述EGR的进液管中的泵的工作功率。
  5. 如权利要求4所述的方法，其特征在于，所述方法还包括：
    在所述EGR的进气口的气体温度升高或进气流量增大的情况下，则重新确定所述EGR率，以及重新确定将所述EGR回收到的气体的温度冷却到所述安全温度内所需的冷却液量，并利用重新确定的所述EGR率，设置设在所述EGR排气口中的阀门的开度，以及利用重新确定的将所述EGR回收到的气体的温度冷却到所述安全温度内所需的冷却液量，设置设在所述EGR的进液管中的泵的工作功率。
  6. 如权利要求4所述的方法，其特征在于，所述方法还包括：
    在所述EGR的进气口的气体温度下降或进气流量减少，且所述GPF/DPF未停止工作情况下，或者在所述EGR的进气口的气体温度下降或进气流量减少，且所述GPF/DPF已停止工作但所述EGR的进气口的气体温度未恢复到所述进气口的正常温度范围内的情况下，重新确定所述EGR率，以及重新确定将所述EGR回收到的气体的温度冷却到所述安全温度内所需的冷却液量，并利用重新确定的所述EGR率，设置设在所述EGR排气口中的阀门的开度，以及利用重新确定的将所述EGR回收到的气体的温度冷却到所述安全温度内所需的 冷却液量，设置设在所述EGR的进液管中的泵的工作功率。
  7. 如权利要求4述的方法，其特征在于，在利用将所述EGR回收到的气体的温度冷却到所述安全温度范围内所需的冷却液量，设置设在所述EGR的进液管中的泵的工作功率之后，所述方法还包括：
    判断所述EGR回收到的气体在经过换热器后的温度是否在所述安全温度范围内；
    如果所述EGR回收到的气体在经过换热器后的温度不在所述安全温度范围内，则继续增大所述泵的工作功率直至所述EGR回收到的气体在经过换热器后的温度在所述安全温度范围。
  8. 如权利要求5所述的方法，其特征在于，确定将所述EGR回收到的气体的温度冷却到所述安全温度内所需的冷却液量，包括：
    Figure PCTCN2021099899-appb-100002
    其中，Q l是将所述EGR回收到的气体的温度冷却到所述安全温度内所需的冷却液量，C g是所述EGR的进气口的气体的比热容，Q是所述EGR的进气口的标定流量，T i是所述EGR的进气口的气体温度，T b是所述EGR将回收到的气体冷却到进入所述内燃机所要求的最低气体温度，C l是所述EGR的冷却液的比热容，T l2是所述EGR的出液口的液体温度，T l1是所述EGR的进液口的液体温度。
  9. 一种车辆废气再循环的控制装置，其特征在于，车辆的GPF/DPF对内燃机排出的气体进行处理后排出到排气通道，且所述GPF/DPF排出的气体可回收到EGR中，所述EGR利用冷却液对回收到的气体进行降温并排入所述内燃机的进气通道中，所述装置包括：
    第一控制模块，用于在所述GPF/DPF启动工作前，控制所述EGR将回收到的气体冷却到进入所述内燃机所要求的最低气体温度；以及
    第二控制模块，用于在所述GPF/DPF启动工作后，依据所述EGR的进气口的气体温度变化和进气流量变化，调整设在所述EGR的排气口中的阀门的开度和设在所述EGR的进液管中的泵的工作功率，以使所述EGR将其回收到的 气体冷却到进入所述内燃机所要求的安全温度范围。
  10. 一种电子设备，其特征在于，包括：
    至少一个处理器；以及
    与所述至少一个处理器通信连接的存储器；其中
    所述存储器存储有可被所述至少一个处理器执行的指令，所述指令被所述至少一个处理器执行，以使所述至少一个处理器能够执行权利要求1所述的方法。
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