485 results about "Inlet temperature" patented technology

The invention discloses a condensation-free efficient heat exchange control method and system for a full-premixing water heater, and the method comprises the steps: collecting the multi-source information, such as air inlet temperature, humidity, gas flow, flue gas oxygen concentration and wall temperature, in real time, calculating a predicted dew point based on a dynamic dew point prediction model, and setting a dynamic safety boundary; the condensation risk is judged by comparing the wall temperature with the safety boundary, and active intervention is carried out in a staged cooperation mode that fuel gas and air volume are continuously adjusted firstly and then a partial combustion zone sectioning valve is rapidly turned off; the system comprises a main controller, a mesh-shaped infrared radiation burner, a sectional valve assembly, a gas proportional valve, a frequency conversion fan and related sensors. According to the invention, the system runs close to the condensation boundary through intelligent control, and the advantage of high operation heat efficiency is realized on the premise of ensuring high reliability.

The invention discloses a gas turbine air inlet temperature coordinated regulation and control system based on waste heat multi-stage utilization and an operation method, and relates to the technical field of combined cycle unit energy conservation, the system comprises a waste heat recovery module, an air inlet temperature regulation and control module, an energy conversion module and a control module; high-temperature exhaust smoke of the waste heat boiler is used as a heat source to heat a flue gas heat exchanger at the tail of the waste heat boiler of the combined cycle unit to generate hot water, and the hot water is used for directly heating inlet air of a gas turbine, driving an absorption heat pump to generate cold water to cool the inlet air of the gas turbine or driving an organic Rankine cycle module to generate power to be connected into auxiliary power, so that multipurpose utilization of waste heat of the unit is realized; in addition, the invention provides an operation method for synergistically improving the efficiency of the system and the combined cycle unit, the wide-load operation capacity and the partial-load energy utilization capacity of the unit can be effectively improved, meanwhile, the waste heat recovery capacity under the high-temperature condition is guaranteed, and the energy consumption efficiency of the unit is comprehensively improved.

The invention relates to the technical field of new energy automobile heat management, and discloses a battery inlet water temperature-based dual-threshold decision-making method, which is realized through the following components: an intelligent collaborative decision-making center module, a multi-source data sensing acquisition module, a waste heat recovery and efficient heat exchange module, a precise execution driving module and a multi-level safety guarantee module. The intelligent collaborative decision center module comprises a heat management controller and an AI intelligent control unit; the multi-source data sensing and collecting module comprises a battery management system, a whole vehicle controller, an air conditioner controller and a full-dimension parameter monitoring sub-module. The waste heat recovery and efficient heat exchange module comprises a double-effect Chiller, an electronic expansion valve, a three-way valve and a four-way valve; the invention aims to solve the problems that energy consumption is increased and efficient circulation of energy cannot be realized due to the fact that waste heat generated in the operation process of components such as a motor cannot be fully excavated and reused and temperature control requirements are met by depending on additional heating or refrigerating components in the heat management of the existing new energy automobile.

Systems and generating power in an organic Rankine cycle (ORC) operation to supply electrical power. In embodiments, an inlet temperature of a flow of gas from a source to an ORC unit may be determined. The source may connect to a main pipeline. The main pipeline may connect to a supply pipeline. The supply pipeline may connect to the ORC unit thereby to allow gas to flow from the source to the ORC unit. Heat from the flow of gas may cause the ORC unit to generate electrical power. The outlet temperature of the flow of the gas from the ORC unit to a return pipe may be determined. A flow of working fluid may be adjusted to a percentage sufficient to maintain temperature of the flow of compressed gas within the selected operating temperature range.

The invention provides a vehicle diesel engine bench simulation emission test method, system, device and medium, and belongs to the bench test technology field, a test bench and a test device are configured, a flowmeter and an analyzer are calibrated through a linear regression equation, and a mapping relation between a measured value and an output quantity is established; an engine transient working condition model is constructed based on real vehicle data, and mapping of the rack control process and the real vehicle operation working condition is achieved; configuring the rotating speed, the torque, the air inlet temperature and the air inlet humidity controlled by the rack as boundary conditions, evaluating the control following performance through a correlation coefficient calculation mode, and verifying the environmental parameter consistency based on a mean value deviation; calculating the exhaust flow, and configuring measurement data based on the intake flow and the fuel consumption; executing a transient test, and obtaining real-time data of an engine running state and discharged pollutants; and under the condition that the double boundary condition constraints are met, carrying out equivalence analysis on a rack and a real vehicle emission result.

The invention relates to the technical field of thermal power generation, in particular to a closed circulation cold end optimization method, device and system, and the method comprises the following steps: obtaining the historical operation data of a unit from a power plant monitoring information system, the data comprises circulating water flow, circulating water inlet temperature, circulating water outlet temperature, condenser backpressure water pump motor current, generator power, medium and low pressure heat supply steam flow, condenser steam-water temperature and condenser water inlet and outlet pressure; s2, performing abnormal value processing on the data obtained in the step S1, namely screening out an abnormal value, and repairing and filling the abnormal value by using an interpolation method; based on the actual condition of the power plant, the unit load and the steam admission amount of the condenser are fitted through a large amount of historical data in the step S2; the total power for starting different numbers of circulating water pumps and fans and the water flow corresponding to the circulating water pumps are determined according to the historical data in the step S2; respectively establishing a condenser model and a cooling tower model; constructing a circulating cooling system model, coupling the condenser model and the cooling tower model, carrying out iterative calculation until convergence or reaching the maximum number of iterations, and obtaining the condenser outlet water temperature, the cooling tower outlet water temperature, the condenser back pressure, the vacuum degree and the power generation power; fitting a correction coefficient curve by referring to the technical specification of a power plant and combining the historical data in the step S2 with the condenser backpressure-generated power correction coefficient graph; and calculating the generated power and the net output power according to the unit load and the auxiliary machine consumption, and outputting an auxiliary machine configuration scheme corresponding to the maximum net power.

The invention discloses a catalyst addition test correction method, system, equipment and medium, and belongs to the technical field of power system energy storage equipment, and the method comprises the steps: obtaining boiler operation parameters, and constructing a boiler efficiency model; a load-coal consumption correction curve is generated through the boiler efficiency model in combination with blank period test data and used for correcting load differences; based on the adding period test conditions, the blank period boiler efficiency is corrected, and corrected blank reference coal consumption is obtained; and the heat loss calculation is adjusted by correcting the air inlet temperature, the feed water temperature, the fuel characteristics and the air moisture deviation design value, and the boiler efficiency under the corrected condition is obtained. By correcting key parameters such as the air inlet temperature, the feed water temperature, the fuel characteristics and the air moisture, boiler efficiency fluctuation caused by operation condition differences is eliminated, and the comparability of test results in the blank period and the adding period is ensured.

The invention relates to the technical field of fuel cell control, in particular to a staged optimization control method for a fuel cell cold start-up process, which comprises the following steps of: acquiring output voltage and current of an electric pile and a cooling liquid inlet temperature signal in real time at the initial start-up stage, calculating a dynamic load impedance amplitude and inputting the dynamic load impedance amplitude into a polarization characteristic coupling estimation model; ohm, activation and concentration polarization voltage drop estimation values are obtained. And comparing the three types of estimated values with a preset polarization threshold to determine a polarization dominant stage, and calling corresponding temperature and humidity control parameters from a preset control strategy mapping table in combination with the cooling liquid inlet temperature. According to the method, polarization stages are accurately divided through polarization decoupling estimation, the control parameters are matched based on the mapping relation, the cold start control logic of the fuel cell is optimized, and the suitability of the cold start control of the stack and the actual operation state is improved.

The invention discloses a starting method, device and equipment of a fuel cell engine and a storage medium. The starting method comprises the steps that when the fuel cell engine is in a cold engine starting state with the environment temperature larger than 0 DEG C, the fuel cell engine is controlled to execute a heat engine mode; when the pile cooling liquid outlet temperature reaches a first target temperature, obtaining an intercooler cooling liquid inlet temperature and an intercooler cooling liquid outlet temperature; and when the temperature of the intercooler cooling liquid inlet is lower than the temperature of the intercooler cooling liquid outlet, the fuel cell engine is controlled to enter a load pulling mode. According to the technical scheme, it is ensured that the temperature condition of the fuel cell engine rapidly reaches the target value before rapid load pulling, the fault that the fuel cell engine directly enters the load pulling mode and liquid water forms pile flooding due to current increase is avoided, rapid engine heating is achieved, and meanwhile normal work of the fuel cell engine is ensured.

The invention belongs to the technical field of new energy automobile heat management, and discloses a novel electric automobile superheat degree control early warning system and method.The system comprises a compressor, a chiller valve, a PT sensor and a vehicle control unit, the vehicle control unit is used for collecting the water inlet temperature, the water outlet temperature and the target temperature of a power battery, a correction value is obtained through combination of a calibration table, and the correction value is calculated; in the valve distribution process, a whole vehicle controller takes the proportion of the required rotating speed of the battery end and the required rotating speed of the passenger compartment end as input, looks up a table to obtain the opening degree of a chiller valve, and outputs the opening degree of the chiller valve to a compressor driving unit. And synchronously updating with the rotating speed of the compressor in the same control period. In the superheat degree monitoring process, the PT sensor outputs refrigerant pressure and temperature signals, and the vehicle control unit calculates the superheat degree and compares the superheat degree with a preset threshold value.

The invention discloses a double-inlet and double-outlet water valve temperature control method based on machine learning, which relates to the technical field of water temperature control and comprises the following steps: identifying a current working stage and entering a corresponding control step; when it is identified that the water source temperature is not synchronized, the cold and hot water initial flow proportion is adjusted through hot water inlet temperature prediction of a water source temperature prediction model, and the initial position of a double-water-inlet valve is adjusted according to the target flow; when the temperature regulation and control stage is identified, dynamically optimizing the cold and hot water mixing proportion based on the real-time inlet water temperature of the double water inlets, generating a valve regulation instruction according to the target flow, and performing position regulation on the double water inlet valves in an incremental position regulation mode; and when the temperature is identified as the stable temperature stage, the real-time outlet water temperature change rate of the double water outlets is monitored, and when the change rate exceeds a dynamic response threshold value, a feedforward-feedback composite control strategy is adopted to adjust the valve positions of the double water inlets under fluctuation suppression. According to the invention, the fluctuation range of the outlet water temperature is greatly reduced.

The invention relates to a multifunctional heat dissipating capacity testing device. The system comprises an engine, an engine water inlet pipe, an engine water outlet pipe, a fan, a water tank, an intercooler, a water inlet temperature sensor, a water outlet temperature sensor, an intercooling front pipeline, an intercooling rear pipeline, an intercooling air inlet temperature sensor, an engine air inlet temperature sensor, a water flow meter, an air flow meter, a baffle, an electronic fan, a water tank front temperature sensor and an intercooling front temperature sensor. An engine air inlet pipeline, an environment temperature sensor and an environment air conditioner. The invention further relates to a testing method using the multifunctional heat dissipating capacity testing device. The method can predict and solve the high temperature condition of the water tank and the intercooling system when the environmental condition and the whole vehicle configuration change, and saves the time cost and the labor cost.

The invention relates to a solid oxide fuel cell power generation system and a heat balance control method and device thereof, and the system comprises a fuel input unit which is used for obtaining reformed fuel gas by using first input fuel and liquid water; the air input unit is used for heating the first input air to obtain high-temperature air meeting the target air inlet temperature; the SOFC module is used for generating power by using the reformed fuel gas and the high-temperature air and outputting the generated power generation waste gas to the waste gas combustion unit; and the waste gas combustion unit is used for re-combusting the power generation waste gas by using second input fuel from the fuel input bypass and second input air from the air input bypass to obtain high-temperature tail gas, and the high-temperature tail gas is transmitted to the fuel input unit and the air input unit through the first tail gas passage and the second tail gas passage. The SOFC power generation system disclosed by the invention has relatively high heat balance control efficiency, and is convenient for quick response during variable load fluctuation operation.

The invention discloses a gas compressor test device and method, and belongs to the field of gas compressor tests.The gas compressor test device comprises a driver, and a driving shaft of the driver is used for being connected with a main shaft of a gas compressor; the unloading assembly comprises a balance drum, a high-pressure gas supply unit, an exhaust unit and an adjusting valve, the balance drum is used for being connected with a main shaft of the gas compressor and used for being connected with an impeller on the main shaft of the gas compressor, the high-pressure gas supply unit is used for being communicated between the balance drum and the impeller, and the exhaust unit is used for being communicated with the side, away from the impeller, of the balance drum; an inlet temperature sensor, an inlet pressure sensor and a flow sensor are arranged in the double-twisted-wire air inlet channel; an outlet temperature sensor and an outlet pressure sensor are arranged in the annular outlet throttler; and a controller. The technical effects of the invention lie in that the device not only facilitates the independent test of the related gas compressor, but also facilitates the small axial force of the impeller of the gas compressor borne by the thrust bearing.

The invention relates to a fuel cell thermal management system control method and system based on model predictive control. The method comprises the following steps: establishing a multivariable state space prediction model of the fuel cell thermal management system; comprising a state variable composed of an electric pile temperature, a cooling liquid inlet temperature, a cooling liquid outlet temperature and a radiator temperature, a control variable composed of an electronic water pump rotating speed and an electronic thermostat opening degree, and a disturbance variable composed of electric pile heat production and an environment temperature; constructing a multi-objective optimization function; comprising an electric pile temperature tracking item, a water pump energy consumption penalty item, a water pump rotating speed smooth item, an electronic thermostat opening penalty item and an electronic thermostat opening smooth item; setting an operation constraint condition; and on the basis of a model prediction control strategy, solving an optimization problem with constraints in an online rolling manner, outputting an optimal electronic water pump rotating speed and electronic thermostat opening control sequence, and implementing a first control variable. According to the invention, collaborative optimization control of the rotating speed of the electronic water pump and the opening degree of the electronic thermostat is realized.

The invention relates to the technical field of aero-engines, and discloses a starting oil supply rule control method and device for an unmanned aerial engine, and the method comprises the steps: obtaining the rotating speed and acceleration at a target moment and a historical moment, and judging whether a first switching condition is met or not; if yes, the inlet temperature of the power turbine at the target moment and the historical moment is obtained, and whether a second switching condition is met or not is judged; if yes, the fuel given quantity and the fuel feedback quantity are obtained, and whether a third switching condition is met or not is judged; if yes, judging whether a fourth switching condition is met or not based on the first time consumption, the second time consumption and the third time consumption; if yes, whether a fifth switching condition is met or not is judged based on the first time consumption, the second time consumption and the fourth time consumption; if yes, switching to a third starting stage in advance, and executing the oil supply rule of the third starting stage. Through multi-stage judgment, oil supply rules are timely and effectively switched, suspension protection is prevented from being triggered, and the starting success rate of the engine is increased.

The invention discloses a front feedback control long material precise cold control facility and a control method. The cold control facility comprises a cooling water inlet flow meter assembly, a membrane valve opening degree pneumatic power assembly, a cooling water flow adjusting valve set, a cooling water pressure measuring assembly, a cooling water temperature measuring assembly, a pneumatic stop valve power assembly, a cooling water pneumatic stop valve set, a pressure maintaining pneumatic stop valve set and a reverse blowing water pneumatic stop valve set. The device comprises a back-blowing compressed air valve group, a pressure-maintaining overflow water flowmeter assembly, a pressure-maintaining overflow valve assembly, a back-blowing air nozzle assembly, a back-blowing water nozzle assembly, a cooling water nozzle assembly, a rolled piece inlet temperature measurement assembly and a rolled piece outlet temperature measurement assembly. The rolling units are subjected to finite division, the neural network method is adopted to analyze the collected big data of the finite units and the boundary influence factors, the influence of the boundary influence factors on the temperature in the rolling process is accurately recognized, the accuracy of temperature control is effectively improved, the yield is improved, and the production cost is effectively reduced.

The invention discloses a thermal management system test method of a hydrogen fuel cell unmanned aerial vehicle, which belongs to the field of energy management and comprises the following steps: a, starting a pipeline heater of a thermal management system, and setting the power of the pipeline heater to be Q1; b, opening an electromagnetic valve, and adjusting a proportional valve to open a branch A and close a branch B; c, starting a fan, and adjusting to an incoming flow wind speed required by the test; d, starting an incoming flow heater, and adjusting the power Q2 of the incoming flow heater to the incoming flow temperature required by the test; e, starting a circulating pump, and recording the circulating flow of the cooling liquid; f, judging whether the cooling liquid inlet temperature is equal to the target temperature or not; g, comparing the cooling liquid inlet and outlet temperature difference with the target temperature difference; and h, the heating power is reduced or improved, and the working conditions of the thermal management system meeting the heat dissipation requirement under different thermal load conditions are obtained. According to the invention, rapid detection of the heat dissipation performance of the heat management system in different working environments can be realized, and the working environment of the heat management system meeting the heat dissipation requirement of the hydrogen fuel cell is obtained.

The embodiment of the application provides a heat exchange quantity metering method and a controller, a heat exchange quantity metering system and a storage medium, and belongs to the technical field of heat exchange. The method comprises the following steps: obtaining the inlet flow of each inlet pipeline and the outlet flow of each outlet pipeline within a starting time to an ending time, and obtaining the inlet temperature at the starting time and the outlet temperature at the ending time; performing heat exchange quantity calculation according to the inlet flow, the inlet temperature, the outlet flow and the outlet temperature to obtain an initial heat exchange quantity; determining a refrigerant enthalpy value change amount according to the inlet temperature and the outlet temperature; determining a target error proportion according to the refrigerant enthalpy value change amount and the initial heat exchange quantity; if the target error proportion is greater than an error proportion threshold, increasing the ending time, and re-performing error calculation to obtain the target error proportion; if the target error proportion is less than or equal to the error proportion threshold, taking the initial heat exchange quantity as a target heat exchange quantity. The embodiment of the application can realize heat exchange quantity metering of a complex pipeline.

The disclosure provides a control method and device of an air supply equipment, an air conditioning equipment and a storage medium, and relates to the technical field of intelligent control. The method comprises the following steps: acquiring an inlet temperature and an outlet temperature of an air duct under a current working condition; determining a first temperature difference between the inlet temperature and the outlet temperature; acquiring a second temperature difference corresponding to the current working condition based on a factory parameter of the air duct; and correcting a working parameter of a compressor in the air supply equipment based on a size relationship between the first temperature difference and the second temperature difference. Thus, stable and reliable operation of the system can be ensured, and problems such as overloading of an indoor unit during heating, defrosting frequency reduction, shutdown or water blowing caused by a decrease in air volume can be avoided, thereby improving the user experience.

The application relates to the technical field of vehicle emission control, and discloses a vehicle regeneration prompting method, device, equipment, medium and program product. The method comprises the following steps: acquiring a multi-dimensional parameter value; judging whether the SCR urea crystallization amount exceeds a first threshold value of the crystallization amount according to the SCR mixer inlet temperature and a urea crystallization risk index; and when the SCR urea crystallization amount exceeds the first threshold value of the crystallization amount, entering a first prompting mode. According to the technical scheme, the regeneration demand can be prompted according to the SCR mixer inlet temperature and the urea crystallization risk index, the performance decline of the vehicle caused by the urea crystallization accumulation can be effectively prevented, and the reliability and operation efficiency of the vehicle emission system are improved.

A gas supply and carbon capture system, comprising an LNG tank, a BOG compressor set, a dual-fuel engine, a CO2 capture unit, a CO2 compressor, a heat exchanger, and a CO2 storage tank, wherein the LNG tank is used for storing liquid LNG, BOG formed at the inner top of the LNG tank is fed to a cold side of the heat exchanger; the heat exchanger is used for heat exchange between pressurized CO2 and the BOG, cold energy of the BOG is utilized to liquefy the CO2, the obtained liquid CO2 is stored in the CO2 storage tank, and the BOG having a higher temperature after the heat exchange is sent to the BOG compressor set; and the BOG compressor set is used for pressurizing the BOG having a higher temperature and then delivering the BOG to the dual-fuel engine for combustion, and the BOG compressor set employs normal-temperature compressors. By means of the system, the cold energy of the BOG from the LNG tank is fully utilized, and the temperatures of the BOG entering the BOG compressors are caused to meet an inlet temperature requirement of the normal-temperature compressors.

The invention relates to a diesel engine operation control method and a storage medium. The diesel engine operation control method comprises the steps that a reference fuel injection strategy of a diesel engine in a standard environment is obtained; determining a multi-cylinder combustion consistency correction strategy based on the consistency deviation of the combustion parameters of the cylinders during actual operation of the diesel engine to obtain a combustion consistency correction value; according to the air inlet temperature of the diesel engine and the temperature zone where the diesel engine is located, the drift diameter of an air release valve is determined and adjusted in a linkage mode, and an oil injection timing environment correction value is determined; based on the air inlet temperature and the operation time of the pressurization system, the oil injection timing compensation value of the part attenuating along with the performance is calculated; and based on the reference fuel injection strategy, the combustion consistency correction value, the fuel injection timing environment correction value and the fuel injection timing compensation value, fuel injection timing of operation of the diesel engine is determined. The actual air inlet requirements of all environments and all working conditions can be met, and the economical efficiency is improved without sacrificing the dynamic property.

According to the cold and hot microclimate adjusting system for air-cooled heat pump cluster installation and the control method, through the triple synergistic effect of the closed ventilation pipeline, the draught fan and the high-pressure micro-mist spraying system, the overall operation performance is effectively improved, and energy consumption is reduced; the sealing pipeline and the directional fan thoroughly isolate cross back suction of exhaust air and inlet air between units, and cold air and hot air mixing is eliminated from the source. In the summer mode, the high-pressure micro-mist nozzle efficiently reduces the air inlet temperature through a sensible heat and latent heat dual heat exchange mechanism, and the heat island effect is relieved; in winter, the cold island effect is relieved through pure physical isolation; and the dynamic adjusting mechanism ensures that the air inlet temperature is always in a target interval by optimizing the fan rotating speed, the nozzle spacing and the water flow in real time. According to the scheme, the technical contradiction that physical isolation and temperature regulation are difficult to consider at the same time is overcome, and the operation energy efficiency of the unit is further optimized.

This invention provides a low-temperature flow resistance testing device for microchannel radiators, comprising a control device and a testing device. The control device includes a temperature environment chamber, an electric valve, a manual valve, a filter, a check valve, and a computer. The testing device includes a temperature sensor, a pressure transmitter, and a differential pressure transmitter. This invention enables the testing of microchannel radiators under various low-temperature conditions, automatically adjusting the liquid coolant flow rate and inlet temperature according to set requirements during the testing process. This invention eliminates the drawbacks of manual control of various parameters, simultaneously satisfying low-temperature flow resistance testing under various conditions, thus improving the accuracy and efficiency of the test.

The application provides a control method and device, electronic equipment and storage medium, and relates to the technical field of human-computer interaction. The method comprises the following steps: firstly, in response to a temperature demand instruction input by a user, a high-voltage heater and a compressor are started in sequence; then, an in-cabin temperature, a warm air core inlet temperature and an ambient temperature collected by a sensor are acquired, and a PID control power of the high-voltage heater and a PID control rotating speed of the compressor are determined according to an air conditioner target temperature, the in-cabin temperature and the warm air core inlet temperature; finally, the operating power of the high-voltage heater is increased from an initial operating power to the PID control power, and the operating rotating speed of the compressor is increased from an initial operating rotating speed to the PID control rotating speed. In the application, the operating power control of the high-voltage heater and the rotating speed control of the compressor are automatically adjusted in real time by starting the high-voltage heater and the compressor in sequence, so that the vehicle-mounted heat pump air conditioning system can consider both the temperature control timeliness and the energy saving during operation.

The application belongs to the technical field of aero-engines, and particularly relates to a method for controlling water flow of a multi-pipeline ejection pre-cooling system of an aero-engine. The water flow of the multi-pipeline is allocated by a digital electronic controller, and each pipeline is independently controlled. The given value of the water supply is calculated by means of temperature deviation, closed-loop control is realized, and the fitting degree of the water injection amount and the required cooling amount is improved. Through the feedback of the inlet temperature, the dependence on the control accuracy of the water metering valve can be reduced. Even if the metered water is inaccurate, it can be compensated through temperature closed-loop adjustment, the industrial requirements of the valve and the electro-hydraulic servo valve are reduced, and the production cost is reduced.

This application relates to an aftertreatment temperature control method, system, and vehicle. The aftertreatment temperature control method includes: determining the ammonia storage capacity of the catalytic converter and the particulate matter capture mass of the particulate matter trap; determining the aftertreatment inlet temperature of the aftertreatment equipment; determining the aftertreatment target temperature based on the aftertreatment inlet temperature, the ammonia storage capacity, and the particulate matter capture mass; and adjusting the aftertreatment temperature of the engine aftertreatment equipment based on the aftertreatment inlet temperature and the aftertreatment target temperature. This application comprehensively considers the aftertreatment inlet temperature, the ammonia storage capacity of the catalytic converter, and the particulate matter capture mass of the particulate matter trap to adjust the aftertreatment temperature of the aftertreatment equipment, achieving multi-factor coordinated control of the aftertreatment temperature, which is beneficial to improving aftertreatment capacity and reducing nitrogen oxide and particulate matter emissions.

This application belongs to the field of aero-engine technology, and specifically relates to a method and apparatus for simulating aircraft bleed air during sustained test of a turbofan engine, wherein the inlet temperature T1 and inlet pressure P1 of the engine are preset to a range; Step S2: Calculate the aircraft bleed air volume W fy The range, the total bleed air temperature T of the aircraft fy The range and total bleed air pressure P fy Range; Step S3: Calculate the cold diameter D of the bleed air nozzle. fy Range; Step S4: Select the cold-state diameter D of the bleed air nozzle fy An aircraft bleed air volume verification test was conducted to obtain the bleed air volume W for the test. fyr When the induced draft volume W in the experiment fyr The requirements are met, and the cold-state diameter D of the expiratory air nozzle is adopted. fy When the induced draft volume W in the experiment fyr If the requirements are not met, return to step S4; ensure that the calculation error of the aircraft bleed air volume is within the required range, and obtain the actual bleed air volume of the engine in various states to the maximum extent through test program design. This test method has the advantages of simple test method, low test cost and high replacement efficiency.

The invention relates to a fast heating fuel cell system and a control method, in the fuel cell system, air is divided into three paths after being pressurized by a fan, one path of air enters a stack cathode after absorbing heat from a combustor through an air preheater, and the other path of air directly enters a stack for adjusting the inlet temperature of the stack cathode; the other path absorbs secondary waste heat of the anode tail gas through an air cooler, and enters a stack cathode after being secondarily preheated by an air preheater; the cathode tail gas is heated by a combustor, then subjected to primary heat release by an air preheater and subjected to secondary heat release by CPOx; fuel is fed into CPOx through a circulating pump to be mixed with gas from an air preheater for a catalytic oxidation reaction, and after the reaction, primary waste heat of anode tail gas is absorbed through an anode tail gas cooler, and then the fuel enters an electric pile fuel side; anode tail gas is divided into two paths after primary heat release through the anode tail gas cooler, one path enters the combustor to be heated, and the other path returns to the circulating pump after secondary heat release through the air cooler.