21 results about "Hybrid fuel" patented technology

The invention discloses a mixed fuel engine injection control method and device and a medium, and relates to the technical field of engine control. The method comprises the steps that a target air-fuel ratio and an actual air-fuel ratio are obtained; calculating a first deviation between the target air-fuel ratio and the actual air-fuel ratio; inputting a first calculation array corresponding to the current operation condition, a previous second deviation and a mixed fuel injection adjustment coefficient in a previous preset step length into a combustion adjustment transfer model to obtain a second deviation; and the second calculation array corresponding to the current operation condition, the first deviation and the second deviation are input into the control model, a mixed fuel injection adjustment coefficient is obtained, and under the condition that it is determined that the engine control mode is in the closed-loop control state, the injection amount of mixed fuel is obtained based on the mixed fuel injection adjustment coefficient. The engine control method and device are used for solving the problem that in the prior art, the engine is poor in operation stability and safety during multi-fuel combustion, and safe and accurate control over the engine is achieved.

Methods for blending transmix containing distillates such as diesel fuel into certified gasoline streams that can be burned in internal combustion engines without affecting the certification of the gasoline or the efficiency or operability of the engine.

The invention relates to the technical field of fluid mechanics control, and discloses a mixing enhancing device and method for achieving pulse disturbance through plasma excitation, the mixing enhancing device comprises a combustion chamber metal structure, a fuel injection hole is formed in the upstream of an inner cavity of the combustion chamber metal structure, and an electrode assembly and an electric switch are arranged on the downstream of the combustion chamber metal structure; the electrode assembly is arranged in an inner cavity of the combustion chamber metal structure; the electrical switch is externally connected to the electrode assembly from the combustion chamber metal structure; fuel is injected into the inner cavity of the metal structure of the combustion chamber through the fuel injection hole and mixed with air flow, meanwhile, the electrode assembly is controlled and adjusted through the electrical switch, then generation and annihilation of a multi-channel sliding arc plasma discharge area are achieved through high frequency, high-frequency pulse disturbance on a flow field is achieved, and mixing of the fuel and the air flow is enhanced. Through the collaborative design of the fuel injection hole and plasma excitation, high-frequency pulse disturbance is applied to a flow field to enhance fuel mixing, and the technical problems that the structure is heavy and the reliability is poor are solved.

The application relates to a power determination method and device for a hybrid fuel cell vehicle and a vehicle, and relates to the technical field of vehicles. At least the technical problem of unreasonable power distribution in the related art is solved. The method comprises the following steps: acquiring vehicle power demand information, a first current temperature of a fuel cell and a second current temperature of a power battery. A first power constraint condition of the fuel cell is obtained based on the first current temperature and a first power constraint matching strategy. A second power constraint condition of the power battery is obtained based on the second current temperature and a second power constraint matching strategy. The power of the fuel cell and the power of the power battery are determined based on the vehicle power demand information, the first power constraint condition and the second power constraint condition. In this way, the power distribution of the fuel cell and the power battery can be more reasonable.

The utility model belongs to the technical field of rail transport vehicles, and provides a dual-power mixed fuel internal combustion electric drive tractor which comprises a frame, a three-axle bogie I and a three-axle bogie II are arranged on the lower portions of the two ends of the frame respectively, and a traction motor I and a traction motor II are symmetrically arranged on the lower portion of the frame and provide power for the three-axle bogie I and the three-axle bogie II respectively. A machine room I, a heat dissipation chamber, a machine room II and an equipment room are sequentially arranged on the upper portion of the frame, and a power source composed of a methanol diesel engine and a generator is arranged in each of the machine room I and the machine room II. A methanol fuel tank is arranged in the heat dissipation chamber, a rectifying device is arranged in the equipment room, a diesel tank is arranged in the middle of the lower portion of the frame, a methanol diesel engine drives a generator to operate, and alternating current generated by the generator is supplied to the two traction motors after being integrated through the rectifying device. According to the utility model, the diesel locomotive consisting of two sets of identical power and transmission systems is adopted, and the methanol diesel engine is adopted, so that the use cost is reduced, and the emission of carbon dioxide is reduced.

The invention relates to a hybrid fuel gas turbine engine, a method for controlling a hybrid fuel gas turbine engine, and a burner assembly for a hybrid fuel gas turbine engine. A gas turbine engine includes a compressor (2), a combustor (3), a turbine (5), a fuel supply system (6), and a control system (7). The burner assemblies (10) of the burners (3) each have a first burner (16) and a second burner (15) which define a first reaction zone (Za) and a second reaction zone (Zp), respectively, and which are arranged coaxially along an axis (B), with the first burner (16) surrounding the second burner (15) and the first reaction zone (Za) being located radially outside the second reaction zone (Zp). The fuel supply system has a first line (6a) that supplies a first fuel (F1) containing ammonia to one of the first burner and the second burner, and a second line (6b) that supplies a second fuel (F2).

The invention provides a turbine composite fuel cell power generation system and an operation method, and the system comprises a proton exchange membrane fuel cell which enables hydrogen and air to generate electrochemical reaction for power generation; a combustion chamber; the turbine generator is respectively communicated with the proton exchange membrane fuel cell and the combustion chamber and is used for conveying air to the proton exchange membrane fuel cell and receiving combustion gas after combustion so as to enable a turbine to do work; the heat exchanger is respectively communicated with the turbine generator, the combustion chamber and the proton exchange membrane fuel cell; wherein the heat exchanger is used for receiving air output by the turbine generator and gas output by the proton exchange membrane fuel cell, so that heat exchange is carried out between the air and the gas, the air conveyed into the proton exchange membrane fuel cell is cooled, and meanwhile, the gas entering the turbine generator is heated. Through the system provided by the invention, the problem of single application scene caused by long starting time and low variable working condition response speed of the existing composite power generation system is solved.

Systems and methods for optimizing on-demand electric vehicle and mixed-fuel fleet operations use a learning-based system. In some embodiments, the method includes collecting real-time operational data, simulating service and charging processes, formulating assignment strategies, and adjusting assignments based on cost-to-go predictions in real time. The assignment strategy is updated in real time to account for parameters such as states of charge on the vehicles; changing context, such as weather or traffic; historical data; and constraints.

The invention discloses a flight power distribution method for a hydrogen-lithium hybrid fuel cell of a multi-rotor unmanned aerial vehicle. The flight power distribution method comprises the following steps: collecting flight mission parameters, environment parameters and load change parameters in real time; initializing a power distribution strategy of the hydrogen fuel cell and the lithium battery based on deep reinforcement learning; then, combining lithium battery charge-discharge cycle data and fuel battery start-stop times to construct a life prediction model, and dynamically adjusting a power distribution proportion according to the residual life; meanwhile, a combined health management module is added to monitor the states of the fuel cell and the lithium battery, so that over-discharge or over-charge is avoided; and finally, according to the real-time data and the feedback of the joint health management module, continuously optimizing a power distribution strategy by using deep reinforcement learning, and realizing dynamic balance among the targets of endurance, efficiency, safety and the like. The flight performance and the energy utilization efficiency of the multi-rotor unmanned aerial vehicle can be improved, the service life of the system is prolonged, and the flight safety is ensured.

The invention discloses an insulation detection method for a hybrid power fuel cell vehicle, which comprises the following steps: after a VCU is powered on, detecting the closed state of a high-voltage loop relay, and carrying out insulation detection on a power battery high-voltage loop by a BMS (Battery Management System) to obtain a first insulation detection value and feeding back the first insulation detection value to the VCU; then, according to any one of the current required power of the whole vehicle, the maximum output power of the power battery and the voltage of the power battery, switching between a pure power mode and a hybrid power mode is carried out, and only one of the BMS or the FCU is selected to execute insulation detection; the VCU compares the received insulation detection value with a preset insulation alarm threshold value, and when the insulation detection value is lower than the alarm threshold value, an insulation fault alarm signal is sent out, and a forced pure electric mode or limited power operation is executed according to the current operation mode. The method solves the problem that the whole vehicle is powered off mistakenly due to the fact that detection of the high-voltage section of the power battery is not accurate, meanwhile, the service life of the fuel battery is prolonged, and the high-voltage safety of the whole vehicle is improved.

The invention discloses an ammonia fuel modified fusion fuel preparation system and a fuel verification method. The system comprises a gas supply unit, an ammonia supply unit, an ammonia-hydrogen mixing unit, an ammonia-hydrogen aftertreatment unit, a fuel injector and a fuel verification unit. The ammonia-hydrogen mixing unit injects hydrogen and liquid ammonia into the ammonia-hydrogen mixing unit to form liquid ammonia-hydrogen fused fuel; an outlet of the ammonia-hydrogen mixing unit is respectively communicated with the ammonia-hydrogen post-processing unit, the fuel injector and the outside; and the ammonia-hydrogen post-treatment unit absorbs ammonia gas from the ammonia-hydrogen mixing unit and the fuel injector, and then hydrogen purification and storage are carried out. The fuel verification unit is used for receiving and measuring the fuel ejected from the fuel injector so as to verify the hydrogen content of the fuel; and comparing the actually obtained hydrogen content with the preset theoretical hydrogen content of the fusion fuel to verify the influence of pressure fluctuation caused in the fusion fuel application process on the actual value of the hydrogen solubility, thereby preparing the corresponding ammonia-hydrogen fusion fuel according to the working requirements of different ammonia-hydrogen engines.

This invention discloses an insulation detection method for hybrid fuel cell vehicles, comprising: after the VCU is powered on, detecting the closed state of the high-voltage circuit relay; the BMS performs insulation detection on the high-voltage circuit of the power battery, obtaining a first insulation detection value and feeding it back to the VCU; then, based on any one of the current vehicle power demand, the maximum output power of the power battery, and the power battery voltage, switching between pure electric and hybrid modes, and selecting only one of the BMS or the FCU to perform insulation detection; the VCU compares the received insulation detection value with a preset insulation alarm threshold; when the insulation detection value is lower than the alarm threshold, it issues an insulation fault alarm signal and executes forced pure electric mode or power-limited operation according to the current operating mode. This invention solves the problem of false power-off of the vehicle caused by inaccurate detection of the high voltage section of the power battery, while improving the life of the fuel cell and the high-voltage safety of the vehicle.

This invention discloses a bipolar hydrogen-producing acid-base hybrid fuel cell, belonging to the field of fuel cell technology. The bipolar hydrogen-producing acid-base hybrid fuel cell of this invention includes bipolar plates, a negative electrode, a positive electrode, a cation exchange membrane, a positive electrode electrolyte, and a negative electrode electrolyte; wherein the positive electrode electrolyte is an acidic electrolyte; the negative electrode electrolyte is an alkaline electrolyte; the alkaline electrolyte contains formaldehyde; the negative electrode is supported with an alkaline formaldehyde selective electrocatalytic oxidation catalyst; and the positive electrode is supported with an acidic electrocatalytic hydrogen evolution catalyst. The bipolar hydrogen-producing acid-base hybrid fuel cell of this invention does not require external oxidants or high-temperature conditions, and can directly utilize the low redox potential (-0.2V vs. RHE) of formaldehyde to achieve efficient conversion, thus avoiding secondary pollution and carbon emissions at the source.

The purpose of this invention is to provide a device and method for predicting the remaining life of a hybrid fuel cell based on a nonlinear observer, belonging to the field of marine hybrid power. The fuel cell remaining life prediction method of this invention includes the following steps: S1: The marine hybrid power system composed of a fuel cell and a battery adopts a fully active control architecture. The fuel cell and its converter adopt power closed-loop control, and the battery and its converter adopt voltage-current dual closed-loop control; S2: Collect the fuel cell output current and bus voltage; S3: Design a nonlinear observer to estimate the fuel cell degradation factor; S4: Calculate the remaining life based on the relationship between the fuel cell degradation factor and the remaining life; S5: Calculate the maximum output current of the fuel cell based on the fuel cell degradation factor and transmit it as a control constraint to the fuel cell controller. This invention does not require additional sensors, the algorithm is simple to implement and highly versatile, and it is of great significance for the control and monitoring of hybrid power systems.

The invention provides a mixed combustion method of a heat accumulating type kiln. The method comprises the following steps: extracting a thermonuclear center coordinate and a thermal boundary layer contour vector in a first channel; performing unsteady state heat transfer prediction in the second channel; calculating a corresponding offset for the center coordinate of the thermonuclear; receiving and carrying out weighted fusion on the thermonuclear center coordinate, the thermal boundary layer contour vector and the virtual thermal inertia vector according to the urgency level in the switching early warning instruction; space-time decoupling control over at least two kinds of fuel supply is carried out; carrying out coupling analysis on the time sequence change of the virtual thermal inertia vector and the center coordinate of the thermonuclear; and the supply time sequence, the fuel space ratio and the combustion flow field form of the at least two kinds of fuel are subjected to coordinated regulation and control, and a final combustion result is obtained. According to the method, through a space-time decoupling control mechanism of a compensation strategy factor, accurate matching of the mixed fuel and the transient heat demand of the kiln in time and space dimensions is realized.

The application discloses a hybrid fuel engine injection control method, device and medium, relates to the technical field of engine control, and comprises the following steps: obtaining a target air-fuel ratio and an actual air-fuel ratio; calculating a first deviation of the target air-fuel ratio and the actual air-fuel ratio; inputting a first calculation array corresponding to a current operating condition, a second deviation and a hybrid fuel injection adjustment coefficient in a previous preset step range into a combustion adjustment transfer model to obtain a second deviation; inputting a second calculation array corresponding to the current operating condition, the first deviation and the second deviation into a control model to obtain the hybrid fuel injection adjustment coefficient; and based on the hybrid fuel injection adjustment coefficient, obtaining a hybrid fuel injection amount under the condition that the engine control mode is in a closed-loop control state. The application aims at solving the problem of poor engine operation stability and safety in the prior art when multiple fuels are combusted, and realizes safe and accurate control of the engine.

A gas turbine engine comprises a compressor (2), a combustor (3), a turbine (5), a primary supply system (6) to supply a primary fuel (F1) comprising ammonia, a secondary supply system (7) to supply a secondary stream (F2) comprising air and / or fuel, and a control system (8). The combustor includes a combustion chamber (12), a plurality of burner assemblies (10) each having a respective reaction zone (Zt) inside the combustion chamber, and a plurality of injectors (11) configured to inject a secondary fluid downstream of the reaction zones of the burner assemblies. The control system is configured to: control the primary supply system such that the burner assembly converts a first mixture having a first fuel-to-air equivalence ratio ([phi] 1) greater than 1 in the reaction zone; and controlling the primary supply system such that the injector injects the secondary fluid into the combustion chamber at a second fuel-to-air equivalence ratio ([phi] 2) of less than 1.

The utility model discloses a vertical closed multi-stage combustion system which comprises an air bellow, an air combing cylinder is connected to the interior of a lining cylinder of the air bellow through a sealing bottom plate, a combustion cylinder A is connected to the top of the lining cylinder in a closed mode, and a combustion cylinder B is installed outside the combustion cylinder A in a sleeved mode. The combustion cylinder B is sleeved with a combustion cylinder C, the combustion cylinder C is connected to the cylinder bottom plate in a sealed mode, and the combustion cylinder C is located in an evaporation cylinder cavity of the evaporation cylinder; the lining cylinder is provided with a fuel conveying pipe and an igniter; and the combustion cylinder C is connected with a flue gas heat exchange coil pipe. Internal air is combed and guided into required air flow to be fully mixed with fuel in the mixing chamber, the fuel is conveyed step by step in the mixing chamber, the combustion chamber A, the combustion chamber B and the combustion chamber C and is fully combusted, and combusted flames and high-temperature smoke are gathered to an inner chamber of the combustion chamber C to participate in heat exchange. And the fuel heat efficiency and heat exchange efficiency are improved.