92 results about "Fuel quality" patented technology

An aircraft-based fuel quality monitoring and alerting system is disclosed herein. The aircraft-based fuel quality monitoring and alerting system can include a first sensor configured to output a signal associated with contamination of fuel entering an aircraft through a first fuel inlet. The system can further include a processor configured to determine a first contamination level of the fuel based on the signal and an alerting system configured to deliver an alert if the first contamination level is outside a predetermined range.

The embodiment of the invention provides an engine control method and device, a vehicle and a storage medium, and the method comprises the steps that the running state of the vehicle is monitored, a state monitoring result is obtained, and the state monitoring result is used for representing whether the knocking phenomenon occurs in the current running state of the vehicle or not; in response to the state monitoring result that the knocking phenomenon occurs in the current running state of the vehicle, the fuel quality of fuel currently used by the vehicle, the current running parameters and running state parameters of an engine and a first control parameter are obtained, the fuel quality is used for reflecting the combustion capacity of the fuel in multiple dimensions, and the fuel quality is used for reflecting the combustion capacity of the fuel in multiple dimensions; the running state parameters are used for reflecting running conditions of the engine; adjusting a first control parameter currently used by the engine based on the fuel oil quality and the operation parameter operation state parameter to obtain a target control parameter; and controlling the engine to operate based on the target control parameter. The technical problem that in the related technology, the stability of controlling operation of the engine is poor is solved.

The invention discloses a method and a system for measuring an electrode constant of an oil conductivity valuing device, relates to the technical field of measurement, and breaks through the limitation of roughly taking an average value of an area of a polar plate traditionally by constructing an actual conductance cell model and defining parameter information, accurately deduces a conductance cell constant, and reversely calculates an effective relative area to determine the electrode constant. According to the method, the coaxial annular structure characteristics are attached, the influence of the edge effect and electric field line diffusion is avoided, and electrode constant calculation is more scientific and rigorous. Therefore, the accuracy of the constant value of the oil conductivity standard substance is guaranteed, a reliable reference is provided for verification and calibration of an oil conductivity meter, an effective oil conductivity measurement result is ensured, the electrostatic accident risk is reduced from the source, and the oil fuel quality and safety management and control are enhanced. The problems that an existing coaxial annular cylinder type electrode conductance cell is not strict in constant calculation and low in standard value credibility are effectively solved, and the electrode constant measurement accuracy of the oil conductivity valuing device is remarkably improved.

The invention discloses a working condition prediction method and device for an engine in a vehicle, a storage medium and the vehicle. The method comprises the steps that in the running process of a vehicle, first state information of the vehicle, second state information of an engine in the vehicle, environment information and fuel gas quality information are obtained, the first state information is used for representing the running state of the vehicle at the current moment, and the second state information is used for representing the running state of the vehicle at the current moment; the second state information is used for representing the operation performance of the engine at the current moment; on the basis of the first state information, the second state information, the environment information and the fuel gas quality information, characteristic information of the engine is determined, and the characteristic information is used for representing the running state of the engine at the current moment and the running state of the engine at the future moment; and analyzing the feature information by using a working condition prediction model, and predicting a target working condition of the engine at a future moment. The technical problem of low engine control measurement accuracy is solved.

The present invention relates to the field of automotive control technology, and particularly to an engine control method, device, equipment and computer-readable storage medium. The engine control method includes: obtaining the concentration of nitrogen oxides in the original exhaust of the engine at least once through a NOx sensor installed upstream of the three-way catalytic converter, and obtaining the engine torque corresponding to the nitrogen oxide concentration; determining a fuel quality coefficient from a preset ignition control map based on the nitrogen oxide concentration and the engine torque; if the fuel quality coefficient is within a first preset range, controlling the intake pressure of the engine based on the fuel quality coefficient. The present invention realizes detecting the fuel quality in the engine before controlling the intake pressure of the engine, and controlling the intake pressure of the engine based on the fuel quality when the fuel quality is normal, so as to consider the interference of the fuel quality on the intake pressure during the process of controlling the intake pressure, improve the accuracy of controlling the intake pressure of the engine, and thus reduce the pollution of the engine exhaust gas.

The invention discloses a joint simulation solving method for a fuel oil thermal management system, and the method comprises the steps: determining a heat sink model through a thermophysical parameter iteration process on an Aspen Plus platform, and calculating the thermophysical parameters of each heat sink along with the changes of temperature and pressure; in the MATLAB / Simulink platform, the storage temperature T0 and the storage pressure P0 are determined according to the physical property of the fuel oil, the mass flow of the fuel oil is solved in a circulating mode through the heat source temperature iteration process, and the heat absorbed by the fuel oil at the FADEC system, the fuel oil pump, the airborne equipment and the engine heat source and the outlet fuel oil temperature are calculated in combination with a heat source module; the heat exchanger adjusts the flow of the consumable heat sink through the heat sink flow iteration process to reduce the fuel oil to the initial temperature T0; the joint simulation platform finally solves various performance evaluation indexes of the system according to feedback results of thermophysical property parameter iteration, heat source temperature iteration and heat sink flow iteration, the coupling mechanism between the heat exchanger module and the heat sink is clarified, and the problems that a traditional modeling method is single and poor in accuracy are solved.

The invention discloses an electric fuel pump flow-rotating speed calibration and flow control method, and belongs to the field of aero-engine fuel flow control. The calibration method comprises the steps that a current fuel mass flow demand value is received; converting the fuel mass flow demand value into a fuel volume flow according to the fuel density corresponding to the current fuel temperature; and calculating the rotating speed of the motor according to the inlet pressure and outlet pressure of the electric fuel pump, the fuel temperature and the fuel volume flow. According to the method, the influence of the fuel oil density on the internal leakage rate is considered, and in the flow-rotating speed calibration calculation process, the fuel oil density is represented through the temperature T to participate in fitting of a polynomial, so that the electric fuel oil pump has flow-rotating speed calibration in a wider temperature domain range, and the actual flight environment requirement is met.

The invention provides a method for measuring the blending combustion amount of biomass fuel in a co-grinding mode and a blending combustion system, and the method comprises the following specific steps: obtaining an internal image when a coal feeder is empty, and extracting an empty bin pixel gray value of the internal image when the coal feeder is empty; obtaining an internal image of the coal feeder when the fuel enters the coal feeder, and extracting a feeding pixel gray value of the internal image when the fuel enters the coal feeder; and comparing the empty bin pixel gray value with the feeding pixel gray value to confirm the fuel type, obtaining the weight of the fuel, and transmitting the weight of the fuel to a fuel quality database of the corresponding type to obtain biomass fuel blending combustion amount data. Accurate measurement of the blending combustion amount of the biomass fuel is achieved through an image processing algorithm. The method is easy to operate, high in precision and suitable for an existing carbon emission checking method. The system can operate continuously and stably only by installing a detection device at an outlet of the coal feeder, and is not influenced by biomass types and blending combustion proportions.

The present invention discloses a combined quality improvement method for a flue gas modified wheat straw and lignite mixed fuel, comprising the following steps: uniformly mixing wheat straw powder and lignite powder to obtain a mixture, drying the mixture at 200-270°C for 25-30 minutes in a flue gas atmosphere, and cooling to room temperature to obtain a flue gas modified wheat straw and lignite mixed fuel. The fuel quality and physical properties of the flue gas modified wheat straw and lignite mixed fuel are improved. The combined quality improvement method can compensate for the loss of combustible components during the drying process, enhance the hydrophobicity of the flue gas modified wheat straw and lignite mixed fuel while improving the quality of the combined quality improved fuel, effectively improve the combined utilization value of lignite and wheat straw, significantly reduce the emission of NOx from the combustion product, and reduce pollution, effectively improve the utilization value of wheat straw and lignite, and achieve efficient energy saving and carbon reduction at the production capacity end.

The invention relates to the technical field of fuel ratio regulation and control, in particular to a fuel self-adaptive ratio regulation and control method for a waste multi-fuel combustion boiler, which comprises the following steps of: obtaining combustion characteristic parameters of various fuels, calculating combustion performance values of the various fuels, grouping and dividing the fuels according to the combustion performance values, and regulating and controlling the fuel ratio of the waste multi-fuel combustion boiler. Calculating a difference value of two groups of fuel combustion performance mean values to obtain an initial performance difference value, determining a fuel proportioning parameter according to the initial performance difference value, monitoring and analyzing temperature data and waste gas emission amount data in a boiler operation process, calculating a temperature fluctuation value and a waste gas emission fluctuation value to obtain a combustion quality influence coefficient, and calculating a combustion quality influence coefficient according to the temperature fluctuation value and the waste gas emission fluctuation value; collecting a steam pressure oscillogram and feed water flow in equipment operation parameters, calculating a steam pressure fluctuation value and a feed water flow fluctuation value to obtain an equipment operation influence coefficient, performing weighted fusion on the combustion quality influence coefficient and the equipment operation influence coefficient to obtain a comprehensive influence value, and performing calibration analysis on an initial performance difference value according to the comprehensive influence value; therefore, the self-adaptive regulation and control of the fuel ratio parameters are realized.

A system for determining properties of fuel supplied to an internal combustion (IC) engine and for adjusting operations of the IC engine based on the determined properties. The system includes an air-flow throttle configured to control the air supplied to the IC engine; a fuel-flow throttle configured to control the fuel supplied to the IC engine; and an engine control module (ECM) configured to receive readings from and control operation of the throttles. The ECM is configured to perform a fuel-air determination program where the ECM determines a percent-error air-to-fuel ratio (AF) based on a true AF ratio compared to an ideal AF ratio. The ECM is configured to perform a fuel property determination and adjustment program in which the ECM is configured to adjust operations of the IC engine based on a fuel property value determined using the percent-error AF ratio.

The invention discloses a variable-speed regulation electric centrifugal pump with flow feedback and a flow control method thereof, and belongs to the technical field of aero-engine control. The electric centrifugal pump comprises a permanent magnet synchronous motor, a centrifugal pump body, an equal pressure difference adjusting valve, a metering valve, a linear variable differential transformer and a motor controller. And the motor controller receives a fuel mass flow instruction of the engine controller and a metering valve opening signal fed back by the LVDT, outputs a motor control instruction and adjusts the rotating speed of the centrifugal pump to change the outlet pressure of the centrifugal pump. The constant-pressure-difference regulating valve senses the pressure change, drives the valve core of the metering valve to move, and changes the opening degree of the metering hole, so that the fuel flow is regulated; the LVDT detects the opening degree in real time and feeds back the opening degree, and flow closed-loop control is formed. According to the invention, on-demand supply of pump outlet pressure is realized through variable-speed regulation, accurate metering and feedback of flow are realized through the synergistic effect of the equal-pressure-difference regulating valve and the metering valve, pressure loss caused by a traditional throttle valve is eliminated, and the system efficiency is remarkably improved.

The invention relates to the technical field of knock control, and discloses an intelligent control system and method for engine knock and preignition, and the method comprises the following steps: collecting engine knock signal data and preignition signal data, and carrying out the signal processing of the knock signal data and the preignition signal data, the method comprises the following steps: generating knock intensity data and preignition intensity data, and during engine knock and preignition identification, setting multi-stage identification thresholds including a basic threshold, a dynamic self-learning threshold and a temperature compensation threshold, and updating the thresholds in real time by utilizing a self-learning algorithm, so that the engine knock and preignition identification accuracy is improved. The method can effectively adapt to sensor signal characteristic change caused by engine wear, fuel quality difference and environment change, solves the problems of misjudgment and missed judgment caused by a fixed recognition threshold value, ensures the accuracy and reliability of knock and preignition recognition, reduces control errors, and improves the reliability of knock and preignition recognition. And the dynamic property, the economical efficiency and the driving smoothness of the engine are effectively improved.

A system for determining properties of fuel supplied to an internal combustion (IC) engine and for adjusting operations of the IC engine based on the determined properties. The system includes an air-flow throttle configured to control the air supplied to the IC engine; a fuel-flow throttle configured to control the fuel supplied to the IC engine; an engine exhaust oxygen sensor and controller configured to receive readings from and control operation of the throttles. The controller is configured to perform a fuel-air determination program where the controller determines a percent-error air-to-fuel ratio (AF) based on a true AF ratio compared to an ideal AF ratio. The controller is configured to perform a fuel property determination and adjustment program in which the controller is configured to adjust operations of the IC engine based on a fuel property value determined using the percent-error AF ratio.

This invention provides a boiler energy-saving operation method based on intelligent algorithms. Addressing the pain points of traditional boilers that rely on manual experience for adjustment and struggle to adapt to dynamic operating conditions, it constructs a collaborative mechanism encompassing data perception, intelligent prediction, multi-objective optimization, and closed-loop control. Boiler operating parameters are collected by multi-dimensional sensors, pre-processed, and input into an LSTM-GBDT hybrid model to achieve high-precision thermal efficiency prediction. The DDPG reinforcement learning algorithm is then used to solve for the globally optimal operating parameters under safety and process constraints. Finally, closed-loop dynamic adjustment is achieved through a DCS system. This method overcomes the limitations of manual experience, transforming from single-parameter control to full-process collaborative optimization. It can adapt to load fluctuations and fuel quality changes, effectively improving boiler thermal efficiency and reducing fuel consumption while ensuring safe operation, and simultaneously reducing manual maintenance intensity, demonstrating strong industrial application value.

Method and system for determining a mass of a liquid in a container and / or a conduit, in particular a fuel in a tank of an aircraft. One aspect of the invention relates to a method for determining a mass of a liquid in a container and / or a conduit (1), for example a tank, at least one sensor (11), the mass of the liquid being determined from the density of the liquid and the level of the liquid in the container and / or the conduit, the density being determined from an estimation of the temperature of the wall (2), the propagation speed of a second propagation mode of a guided elastic wave propagating in the wall of the container or conduit below the level of the liquid and a dispersion curve of this second propagation mode. Figure to be published with the abstract: Figure 1

The invention belongs to the technical field of thermal power generation, and discloses a thermal power generation fuel quality soft measurement method and a related device, and the method comprises the steps: obtaining boiler real-time operation index data related to the fuel quality; based on a mutual information method, performing feature screening on the boiler real-time operation index data related to the fuel quality to obtain key real-time operation index data; inputting the key real-time operation index data into a fuel quality soft measurement model, and outputting to obtain a quality soft measurement result of the thermal power generation fuel; wherein the fuel quality soft measurement model is a model based on a long short-term memory neural network; the fuel quality soft measurement model based on the long-short-term memory neural network is used for predicting the fuel quality, real-time online detection of the fuel quality is achieved, boiler operation can be rapidly responded according to changes of the fuel quality, and then the combustion efficiency and emission control of the boiler are ensured; and the stability and the flexibility of the production process are enhanced.

The present application belongs to the field of engine fuel control technology, and particularly relates to a fuel information processing method, an engine management device, a medium and a controller; by partitioning calibration of engine working conditions and combining preset reference physical quantity threshold conditions, the detection and response information of the control unit on the knocking phenomenon of poor oil products is used to realize the processing of fuel quality information under preset working conditions, and then the discrimination of fuel information is improved by combining the collection and processing of fuel filling information, and further the running state of the engine is improved by comprehensively processing the working condition information and adjusting the ignition angle; the method and product of the present application can meet the on-board diagnostic (OBD) capability, improve the adaptability of the engine to oil products, maintain a high fuel economy level and engine safety level, and can upgrade the control strategy on the basis of the existing hardware to improve the noise, vibration and harshness (NVH) performance of the vehicle and the robustness of the engine.

The invention belongs to the technical field of blast furnace ironmaking, and particularly discloses a solid fuel replacement and hydrogen-rich injection method in a hydrogen-rich carbon cycle oxygen blast furnace mode. According to the method, the quantitative replacement relation between the decarburized gas injection amount and the coke consumption reduction amount is established, a composite injection plan of'gas first and powder second and cooperative climbing 'is implemented, and hydrogen-rich gas enhanced injection is planned, so that the solid fuel consumption and the carbon emission are systematically reduced. The method specifically comprises the following three steps: establishing a fuel replacement reference, implementing decarburized gas dominant replacement and pulverized coal collaborative replacement in stages, planning hydrogen-rich gas injection reinforcement, and controlling key injection parameters and crude fuel quality at the same time. According to the method, the coke ratio is reduced by more than or equal to 60kg / t, the solid fuel consumption is reduced by more than or equal to 15%, the CO2 emission is reduced by more than 2%, the operation path is clear and controllable, the furnace condition is stable and smooth, the technical extensibility is high, and the method is suitable for industrial application of a large blast furnace HyCROF mode.

The present invention discloses a fuel measurement method for a heterogeneous fuel tank. The upper ends of the heterogeneous fuel tanks are connected, and according to the unconnected parts at the lower ends of the heterogeneous fuel tanks, the heterogeneous fuel tanks are sequentially divided into several measurement units; several fuel quantity sensors are sequentially connected from top to bottom in the measurement unit. The fuel quantity sensors are divided into three sections from top to bottom: upper non-measurable, normal oil immersion, and lower non-measurable. Each fuel quantity sensor is provided with a fuel mass characteristic database corresponding to the oil level height and the fuel quantity. The fuel quantity corresponding to the oil level height of the fuel quantity sensors in each measurement unit is obtained, and the fuel quantities of all measurement units are summed to obtain the fuel quantity of the heterogeneous fuel tank. By splitting the heterogeneous fuel tank into several measurement units, the present invention can quickly and accurately obtain the fuel quantity of the entire heterogeneous fuel tank through the fuel quantity measurement of each measurement unit, effectively improving the test efficiency. Moreover, the measurement error of the fuel quantity in the fuel tank is relatively small compared with the prior art, meeting the requirements of practical use and having good practicability.

The invention relates to the technical field of oil quality analysis, and particularly discloses an oil quality analysis method based on automobile emission data, which comprises the following steps: S1, setting a driving state, acquiring emission data of standard fuel oil, and establishing a standard data set; s2, the vehicle driving process is divided into time periods before and after refueling, the speed of the time periods after refueling is monitored in real time, a change curve is generated, and the standard total emission amount and the oil quality coefficient are obtained according to the standard data set; s3, same speed monitoring and emission amount calculation are carried out in the previous time period, and a first coefficient is obtained; meanwhile, measuring the post-period emission amount, and calculating a second coefficient; s4, combining the two coefficients to obtain an actual oil product coefficient, and comparing the actual oil product coefficient with a standard oil product quality coefficient so as to judge whether the oil product has a quality problem or not; the fuel oil quality is effectively monitored and guaranteed, and the method has important significance on vehicle performance maintenance, emission control and environmental protection.

The application discloses a liquid fuel distribution groove, wherein an external fuel passage and an internal fuel passage are respectively separated by a blocking boss and a blocking area; a first fuel supply pipe can supply fuel to the internal fuel passage and the external fuel passage simultaneously; a second through hole is only in fluid communication with the external fuel passage; fuel supplied by the first fuel supply pipe flows into the internal fuel passage through a first through hole and flows forward through each atomizer connecting pipe distributed in a circumferential direction; fuel flowing into the external fuel passage through the first through hole flows reversely and finally flows into a second fuel supply pipe through the second through hole. The liquid fuel distribution groove can adjust fuel temperature simultaneously in the process of supplying fuel to a liquid fuel atomizer, plays a preheating or cooling role, and can also adjust fuel quality, and has simple structure and low manufacturing cost.

The present invention relates to the technical field of fuel quality detection, and specifically discloses an automobile fuel oil quality detection device, which includes a sealing plate and a float. The sealing plate is a cylindrical structure, and a accommodating groove is provided on the circumference of the sealing plate. An airbag is matched in the accommodating groove, and the airbag is in an inflated state. A mounting opening is provided at the center of the sealing plate, and a rubber ring is matched at the mounting opening of the sealing plate. The float passes through the center of the rubber ring. When the quality of the fuel in the oil tank is detected, the sealing plate is placed in the pipe mouth of the oil tank to seal the pipe mouth of the oil tank. When the airbag conflicts with the inner wall of the pipe mouth of the oil tank, the top column cancels the clamping of the float, and then the float moves downward, and the bottom of the float contacts the fuel liquid surface and floats on the fuel liquid surface. At this time, the downward movement of the float is recorded, and then the float is pressed. The liquid extraction depth of the liquid suction shell can be determined according to the pressing amount.

The utility model relates to high pressure fuel test technical field, and disclose a kind of high pressure fuel test equipment, including workbench, support leg, the bottom of the workbench is fixedly installed with two groups of mutually parallel support leg, the bottom of the support leg is fixedly installed with rubber antiskid pad, the corner of the one side of workbench top is fixedly installed with fuel tank, the one side of the top of fuel tank is fixedly installed with fuel delivery structure, the side of fuel delivery structure is fixedly installed with connecting pipe, the other end is fixedly connected with fuel mass flowmeter, the other corner of the one side of fuel tank is provided with fuel backflow structure in the top of workbench, the top of fuel tank is provided with fuel extraction structure corresponding to fuel backflow side, the utility model can accurately simulate various dynamic conditions of high pressure fuel system in actual operation, such as fuel injection process under different pressure, temperature, flow conditions.

A method for controlling multiple fuel injectors for a vehicle may include determining a total fuel mass for a combustion stage in a cylinder. The method may further include determining a first injection mass for a first fuel injector and a second injection mass for a second fuel injector. The sum of the first injection mass and the second injection mass is equal to the total fuel mass. The first and second fuel injectors are configured to deliver fuel to the cylinder. A first minimum mass per pulse of the first fuel injector is greater than a second minimum mass per pulse of the second fuel injector. The method may further include controlling the first and second fuel injectors at least partially based on the first and second injection masses.

The invention discloses a method, a device and equipment for identifying abnormity of a gas station and oil products on line, and relates to the field of fuel oil supervision. The method comprises the steps that the position of an abnormal gas station is judged according to the actual distance between a refueling vehicle in a target area and the nearest gas station; comparing the actual fuel effect parameter with the predicted fuel effect parameter after determining that the vehicle is refueled in the gas station; if the actual oil consumption is larger than the predicted oil consumption or the actual emission concentration is larger than the predicted emission concentration, it is judged that the oil product refueled by the target vehicle at the present gas station is an abnormal oil product; if the actual purification efficiency is smaller than the predicted purification efficiency, the fuel oil effect parameters are predicted again, and when the deviation between the predicted purification efficiency and the average purification efficiency of the same type of vehicle is smaller than or equal to the model error, it is judged that the oil product is the abnormal oil product. According to the invention, the abnormal gas station and the fuel quality can be identified online in real time.

The application discloses a residual oil alkali metal treatment-catalytic cracking combined processing method, which comprises the following steps: (1) mixing residual oil raw materials and alkali metals into a reactor to perform reaction; (2) performing solid-liquid separation on the material after the reaction in step (1) to obtain a solid-phase product and generated oil; and (3) feeding the generated oil obtained in step (2) into a catalytic cracking device, and performing fractionation on the material after the reaction to obtain dry gas, liquefied gas, catalytic cracking gasoline, catalytic cracking light diesel oil, catalytic cracking heavy distillate oil and coke. The method can produce high-quality low-sulfur gasoline fraction, has a long running cycle, does not need high-temperature and high-pressure conditions and has low hydrogen consumption, thereby effectively improving fuel quality, reducing device running cost, realizing energy saving and consumption reduction.

A system for determining a characteristic of fuel supplied to an internal combustion (IC) engine and for adjusting operation of the IC engine based on the determined characteristic. The system includes: an air flow throttle configured to control air supplied to the IC engine; a fuel flow throttle valve configured to control fuel supplied to the IC engine; an engine exhaust oxygen sensor; and a controller configured to receive readings from the throttle valve and control operation of the throttle valve. The controller is configured to execute a fuel-air determination procedure, wherein the controller determines a percentage error air-fuel ratio (AF) based on a comparison of a real AF ratio to an ideal AF ratio. The controller is configured to execute a fuel characteristic determination and adjustment procedure, wherein the controller is configured to adjust operation of the IC engine based on a fuel characteristic value determined using a percentage error AF ratio.

The application discloses a kind of oil storage equipment. Including oil storage tank, oil guide assembly, oil tank and sampling device. Oil storage tank is equipped with oil storage cavity. Oil guide assembly includes first oil guide pipe, second oil guide pipe and third oil guide pipe. One end of first oil guide pipe is provided with first oil guide port. One end of second oil guide pipe is provided with second oil guide port. One end of third oil guide pipe is provided with third oil guide port. Along the depth direction of oil storage cavity, first oil guide port is arranged above second oil guide port, and third oil guide port is arranged between first oil guide port and second oil guide port. Oil guide pipe is fixedly arranged on oil storage tank and communicates with oil storage cavity. Sampling device is connected with oil guide assembly to guide oil out of oil guide assembly. The oil storage equipment can obtain fuel oil at different depths in the oil storage tank for sampling analysis according to the external environmental characteristics of the oil storage tank, which is beneficial to improve the reliability of long-term fuel quality of the oil storage tank.

The invention discloses a boiler multi-source fuel blending method which is used for solving the problems that due to the fact that an existing fuel quality detection scheme is low in detection time efficiency, blending adjustment of multi-source fuel cannot be conducted in real time, the combustion efficiency of a boiler is reduced, pollutant emission exceeds the standard, and even a hearth is coked or extinguished due to heat value unbalance. The method comprises the following steps: acquiring element composition of the multi-source fuel through LIBS, and determining calorific value data corresponding to the multi-source fuel according to the element composition; according to the obtained element composition, position information and weight data of the multi-source fuel, constructing full-flow dynamic flow track data; determining an optimal flow set value of each coal feeding mechanism based on a multi-objective optimization algorithm according to the dynamic flow track data and the heat value data; and according to the optimal flow set value, a blending control strategy corresponding to each coal feeding mechanism is generated, and the blending control strategy is issued to each coal feeding mechanism, so that each coal feeding mechanism adjusts the rotating speed and the baffle opening degree according to the blending control strategy.