1082 results about "Engine power" patented technology

The invention provides a ship main engine power real-time optimization method based on a hybrid network model, and belongs to the technical field of ship energy saving.A hybrid neural network model is constructed, the hybrid neural network model is based on a physical information neural network, a KAN network is introduced to serve as a front-end network structure, and the power of a ship main engine is optimized in real time; the high-dimensional nonlinear mapping module is used for establishing high-dimensional nonlinear mapping from navigational speed, a ship type parameter matrix, propulsive efficiency, fuel conversion efficiency and environmental factors to the minimum power of a main engine; a composite loss function is adopted to train the hybrid neural network model, wherein the composite loss function is formed by weighted summation of mean square error loss, dynamics constraint loss, propulsive efficiency constraint loss and fuel consumption constraint loss; using the trained hybrid neural network model to receive ship operation parameters and environment parameters collected in real time, and outputting a minimum power prediction value of the ship main engine through one-time forward propagation calculation to realize real-time optimization of the main engine power.

The invention provides a series-parallel hybrid power tractor driving system. The series-parallel hybrid power tractor driving system comprises an engine, a P1 motor used for generating electricity or starting the engine, a PS motor used for independent or coupled driving and a series-parallel hybrid power tractor transmission system. The invention further provides a control method of the driving system. Confluence and diversion of engine power and speed change of the tractor are controlled through the P1 motor, the PS motor, the rotating speed coupling mechanism, the torque coupling mechanism, the clutch and the brake. According to the series-parallel connection type hybrid power tractor driving system, a multi-mode driving mode can be achieved to adapt to operation in a complex environment, the dynamic property and economical efficiency of a tractor are improved, and the series-parallel connection type hybrid power tractor driving system has the advantages of interval stepless speed change, precise control and the like.

The invention provides a power control method and a related device, and relates to the field of range extenders. After a hydraulic system working instruction is received, if it is determined that a power advance control strategy needs to be adopted, before the current of a hydraulic displacement control valve is adjusted according to the hydraulic system working instruction, the power advance control strategy is adopted; the power of an engine and the power of a target generator are adjusted to the total power required by the engine, which is calculated based on the target hydraulic power and the power generation required power, so that the current engine power can meet the power generation power requirement and the power requirement of a hydraulic system after responding to a working instruction of the hydraulic system; and then the hydraulic displacement control valve current is adjusted according to the hydraulic system working instruction, after the hydraulic displacement control valve current is adjusted, the hydraulic power begins to change, and during the hydraulic power change period, the power of the target generator can be adjusted based on the hydraulic power change, so that the engine can provide the hydraulic power needed by the hydraulic system in real time.

The invention discloses a predictive cruise control method and system for a commercial vehicle. The method comprises the steps that road gradient information provided by a high-precision map and a target cruise vehicle speed corrected by a deep belief network driving style model are obtained to serve as input parameters; according to the rotating speed and the torque of the engine, a weighted moving average algorithm is adopted to carry out averaging processing on the power value within a short period of time, and the current engine power is generated; on the basis of an automobile power balance equation, according to the current position and the slope value of the front road, the driving power requirement of the next slope section is predicted; and in combination with the efficient output power interval of the engine, the recommended gear and the optimal accelerator opening degree of the next slope section are generated according to different power demand conditions. Therefore, according to the predictive cruise control method for the commercial vehicle, the gears and the accelerator can be adjusted in a self-adaptive mode according to the road gradient and the driving habit, the driving efficiency and the fuel economy are improved, and the individuation of the driving experience is enhanced.

An apparatus and methods for a rotor pack are provided for a positive displacement supercharger that produces greater engine power output without loss of best seal between the rotors or between the rotors and an interior surface of an enclosing case. The rotors include relief zones and cupped portions at an intake airflow side of each lobe comprising the rotors. The relief zones allow additional airflow to enter the rotor pack while the cupped portions scoop additional airflow into the rotor pack during operation of the supercharger. Tapered radius portions of an enclosing case allow additional airflow to be dragged into the rotor pack. Pressure relief portions on a rotor bearing plate and angled portions on each lobe extend compression events during operation of the rotor pack. The angled portions reduce a margin of the lobes to sharpened edges without affecting the diameter of the margin.

The invention relates to the technical field of vehicle transmission power generation, in particular to a vehicle-mounted engine power takeoff driven parking power generation device which comprises a power takeoff and a power generator, a transmission shaft component is arranged between the power takeoff and the power generator, and the power takeoff drives the power generator to work and generate power through the transmission shaft component; the transmission shaft component comprises a first split shaft and a second split shaft which are coaxially arranged, an axial lock sleeve is fixedly arranged on the first split shaft, and the axial lock sleeve axially limits the second split shaft; according to the parking power generation device driven by the power takeoff of the vehicle-mounted engine, a vehicle can have higher safety redundancy, and when the power takeoff breaks down and cannot be connected with power or disconnected from the power, the working condition can be automatically recognized, and power takeoff is disconnected or power takeoff is connected in an emergency.

The invention relates to the technical field of hydraulic dynamometers, in particular to a hydraulic dynamometer for testing power output of an underwater engine, a positioning base is fixedly mounted on the upper end face of the rear side of a testing base, a driving motor is mounted at the top end of the positioning base, and a torque sensor is mounted on a front-end rotating shaft of the driving motor; a connecting shaft is installed at the front end of the torque sensor, a coupler is installed at the front end of the connecting shaft, a sliding base located on the front side of the coupler is slidably installed at the upper end of the testing base, a power measuring base is arranged at the upper end of the sliding base, a semicircular opening is formed in the upper end of the power measuring base, and a semicircular shell is fixedly installed in the semicircular opening. A left arc-shaped clamping plate and a right arc-shaped clamping plate are installed in the semicircular shell in a sliding mode, a locking component is arranged between the left arc-shaped clamping plate and the right arc-shaped clamping plate, and a hydraulic dynamometer is arranged in the semicircular opening. The torque value of the hydraulic dynamometer can be displayed, so that the test precision is improved, the measurement accuracy is ensured, and the reliability of a test result is ensured.

The invention discloses a design method and system of a pressure relief and vortex reduction device, electronic equipment and a storage medium, the axial arrangement position of the pressure relief and vortex reduction device is designed according to the air entraining requirement, and it is guaranteed that the static pressure of the air entraining position meets the sealing air entraining pressure requirement. The overall dimension design of the pressure-relief vortex-reduction device is carried out under the conditions of structural dimension constraint and exhaust outlet static pressure constraint, miniaturization design is achieved on the premise that outlet static pressure meets index requirements, and the pressure-relief vortex-reduction device is compact in structure, convenient to install, light in weight, small in influence on dynamic characteristics of a rotor and high in reliability. And the risk of vibration during high-speed rotation of the rotor is reduced. According to the pneumatic design of the pressure relief vortex reducer adopting the through type contraction channel, the outlet static pressure is reduced by increasing the gas speed, so that the purpose of pressure relief is achieved, the reverse pressure gradient of the contraction channel is small, generation and development of flow separation can be effectively inhibited, the total pressure loss of flow is greatly reduced, the air entraining flow is small, and the service life is long. And the influence on the power of the engine is small.

The invention discloses a multifunctional hybrid power system for a ship, relates to the field of ship power control, and solves the technical problems that an existing hybrid ship power system is high in oil consumption and single in function. The device comprises a controller, a motor driving module, an engine power module, an energy storage module, a range-extended power generation module and a propeller, the driving end of the motor driving module is in transmission connection with the propeller, the driving end of the engine power module is in transmission connection with the driving end of the motor driving module, the input and output end of the energy storage module is electrically connected with the input and output end of the motor driving module, and the input end of the energy storage module is electrically connected with the range-extended power generation module. And the motor driving module, the engine power module, the energy storage module and the extended-range power generation module are all electrically connected with the controller. The invention further discloses a control method of the marine multifunctional hybrid power system. According to the invention, the fuel economy of the power system and the flexibility of response to the power system under different loads are improved, and the braking energy recovery of the ship is realized.

A retrofit mining haul truck includes a hybrid hydrogen fuel cell / battery-based powerplant in place of a carbon fuel-based powerplant. The retrofit mining haul truck includes a frame, a tray coupled to the frame, and a deck coupled to the frame forward of at least a portion of the tray. A battery system is mounted to the deck of the retrofit mining haul truck. A hydrogen storage system (HSS) is installed in an engine bay volume of the retrofit mining haul truck. The engine bay was configured to contain a combustion engine (e.g., a diesel engine) prior to retrofitting the retrofit mining haul truck. At least a portion of a fuel cell system is installed in a wheel pocket of the retrofit mining haul truck. The wheel pocket was configured to contain a diesel tank prior to retrofitting the retrofit mining haul truck.

A system including a engine having a low spool and a high spool, a first hybrid electric motor connected to the low spool and a second hybrid electric motor connected to the high spool. An auto-throttle controls an amount of power provided to the engine responsive to at least one aircraft parameter. A power splitting algorithm implemented between the auto-throttle and at least one of the first and second hybrid electric motors determines a power split dividing the total engine power into the power produced by burning fuel and electrical power provided to the at least one of the first and second hybrid electric motors responsive to control signals from the auto-throttle.

The invention discloses a method for evaluating the EEDI contribution of a wing-shaped sail based on actual ship sea trials, and relates to the technical field of ships. The method comprises: conducting actual ship performance tests on ships equipped with sails to obtain main engine power required to maintain a target speed when the sails are in different operating states at various relative wind direction angles; obtaining a net thrust test coefficient of the sail at various relative wind direction angles at the target speed based on the main engine power; obtaining a net thrust simulation coefficient curve of the sail at various relative wind direction angles at the target speed based on a four-degree-of-freedom motion model of the ship; comparing the net thrust simulation coefficient curve of the sail with the net thrust test coefficient of the sail to establish a revised four-degree-of-freedom motion model of the ship in a sail-raising operating state; and calculating sail thrust matrix elements and sail EEDI contribution corresponding to a reference speed and any combination of wind field conditions based on the four-degree-of-freedom motion model of the ship in the sail-raising operating state and the four-degree-of-freedom motion model of the ship without sails. The method has the characteristics of being objective, realistic, and operational.

The present embodiments may provide a steer-by-wire steering apparatus which enables a driver to use a function for controlling an automobile, such as automatic parking, lane keeping, driving assistance according to a road surface condition, steering-vibration damping, or autonomous driving control, to improve the driver's convenience, and allows removal of hydraulic pressure-related components to prevent consumption of engine power by the components and thus can satisfy the high power and rigidity required for a steering device of a commercial vehicle.

The invention discloses an engine control method and a related device, and the method comprises the steps: obtaining a current engine load parameter, a current engine power parameter and a current environment pressure value of the operation of an engine under the condition that the engine enters a dynamic VVT (Variable Valve Timing), and obtaining a control parameter of the engine based on the current engine power parameter and the current environment pressure value; and determining a quit dynamic VVT critical value meeting the current engine working condition, and controlling the engine to quit the dynamic VVT under the condition that the current engine load parameter and the quit dynamic VVT critical value meet the quit dynamic VVT condition. According to the method, when the dynamic VVT condition is determined to exit, the engine power parameters and the pressure value of the environment where the engine runs are comprehensively considered, so that it can be guaranteed that the dynamic VVT condition is exited to meet the running environment and power requirements of the engine, and the dynamic VVT condition can be exited under the condition that the required torque of the engine in a high-altitude area is large. And the condition that the engine frequently advances and retreats into the dynamic VVT is effectively avoided.

The invention provides a fuel-based, single-engine multirotor drone, wherein the drone comprises a body, a turboshaft engine to generate rotational movement, a plurality of rotors, a plurality of pulleys, a plurality of transmission belts, and a gearbox assembly. The gearbox assembly comprises a pair of coaxial counter-rotating gears which are coupled to a pair of coaxial counter-rotating shafts, wherein the rotational movement of the engine is transferred synchronously from the counter-rotating shafts of the gearbox to the plurality of the rotors through the plurality of pulleys and transmission belts.

An unmanned aerial vehicle having a petrochemical-based engine powering at least one rotational blade for achieving flight provides for improved vegetation removal. The AEV includes a power transformer connected to the engine, the transformer generating electrical power from the operation of the engine and a plurality of electrically-powered blade units, each unit having a blade powered by a motor. In the AEV, a plurality of electrical connectors provide for transferring the electrical power generated by the transformer to each of the electrical motors of the blade units for causing circular rotation of the corresponding blade such that unmanned aerial vehicle is operative to trim the vegetation using the plurality of blade units powered by the engine.

The invention relates to a method for automatically controlling turbine engines of a rotorcraft when one turbine engine breaks down. Upon detection of a failure of a first turbine engine of the aircraft, the automatic control method comprises:-determining (102) a flight phase, then, when the aircraft is in a phase other than the take-off phase-determining (102) the flight phase by gradually decreasing the power of the first turbine engine and gradually increasing the power of at least one second turbine engine; starting (110) the turbine engine to operate in an offset mode in which a gradual decrease in the first turbine engine power and a gradual increase in the at least one second turbine engine power are controlled in a complementary manner to maintain the rotational speed of the rotor at the rotational speed setpoint speed of the rotor, starting (120) an engine abnormality indication, and setting (130) a power limiter.

The invention relates to a method and a device for diagnosing the rationality of the supercharging capacity of a supercharged engine. The method comprises the following steps: determining a standard threshold value of the opening degree of a supercharging actuator; the actual opening average value of the supercharging actuator under the current working condition is obtained; and comparing the difference between the actual opening average value of the supercharging actuator and the standard opening threshold value of the supercharging actuator under the same working condition to judge whether a supercharging rationality fault occurs or not. On the premise that normal control of the engine is not affected, the influence of ignition efficiency and the like on the opening degree of the supercharging actuator is recognized, the opening degree threshold value of the supercharging actuator is updated, and meanwhile the judgment difference for judging faults of the supercharging system is updated in real time along with passing of the life cycle of the engine and aging of the supercharging system; whether the capacity of the supercharging system is abnormal or not is recognized, maintenance is conducted as soon as possible when problems occur, and therefore the influence on the dynamic property and economical efficiency of an engine is reduced.

The invention provides a hybrid power truck energy management and control method and device and a commercial vehicle, and belongs to the technical field of commercial vehicle energy management and control. In the vehicle running process, a vehicle control unit obtains commercial vehicle running state information and transmits the commercial vehicle running state information to a hybrid power truck control module; the hybrid power truck control module inputs the operation state information of the commercial vehicle into the hybrid power truck model; the hybrid power truck model calculates the working point of a current engine according to the rotating speed and torque of the engine, and the supercharging parameters of the electronic supercharger are estimated by combining the exhaust temperature and the exhaust gas flow; the torque distribution of the motor and the charging and discharging state of the battery are determined based on the driving resistance of the vehicle and the operation intention of the driver. Motor torque assistance is reasonably distributed, balance optimization of power and energy consumption is achieved, and fuel economy and power performance are improved. The engine power output is improved; and the working efficiency and the reliability of the electronic supercharger are also improved.

The invention relates to the technical field of vehicle speed control, in particular to a chemical dangerous chemical vehicle safety management and control method based on big data, and the method comprises the steps: obtaining vehicle speed data and engine power data in a vehicle operation process; the maximum vehicle speed of the vehicle is regulated and controlled once every preset duration, in any regulation and control process, a preset temperature threshold value is corrected by means of the average stability degree of vehicle speed data in the regulation and control time period, the correction value is the product of the average stability degree and the temperature threshold value, and the optimal solution of the maximum vehicle speed in the regulation and control time period is found based on the correction value by means of a simulated annealing algorithm. And controlling the vehicle speed based on the optimal solution. According to the invention, the speed of the vehicle can be accurately controlled.

The invention provides a gear wind resistance power loss prediction method and system, computer equipment and a medium, and belongs to the field of aero-engine power transmission, and the method comprises the steps: obtaining physical parameters of a to-be-predicted gear; according to the physical parameters of the to-be-predicted gear, gear structure parameters are extracted, tooth surface torque parameters and fluid mechanics parameters are calculated, and the gear structure parameters, the tooth surface torque parameters and the fluid mechanics parameters of the to-be-predicted gear are consistent with the same type of parameters in the sample space in sequence and dimension; the gear structure parameters, the tooth surface torque parameters and the fluid mechanics parameters of the to-be-predicted gear are input into a pre-trained power loss prediction model, the wind resistance power loss of the to-be-predicted gear is obtained, and the power loss prediction model is obtained through a sample space training deep learning model. Compared with numerical simulation, the method has the advantage that the power loss prediction efficiency is remarkably improved.

The invention provides a sample construction method for a control model of a hybrid vehicle, and is applied to the technical field of data processing. The method comprises the steps that under the condition that a driving speed sequence of the hybrid power vehicle in a historical driving cycle is kept unchanged, a target decision sequence corresponding to the minimum weighted value of a plurality of driving cost indexes is determined, and the target decision sequence comprises target engine power corresponding to each driving speed; determining a vehicle driving parameter set corresponding to each driving speed according to the driving speed sequence and the multiple target engine powers; and according to the driving speed, the target engine power corresponding to the driving speed and the vehicle driving parameter set corresponding to the driving speed, a training sample used for training a control model of the hybrid vehicle is constructed. The invention further provides a control method of the hybrid vehicle.

The invention discloses liquid rocket system polarity test equipment and a test method, and the method comprises the steps: carrying out the analysis of the working principles of a rocket system polarity test servo system, a final correction attitude control correction system and an engine power system, selecting a corresponding data collection device, and installing the data collection device at a to-be-detected position. During testing, a corresponding data acquisition device is used for carrying out data acquisition on parts with relative position changes or electromagnetic valve actions in the servo system, the final correction attitude control correction system and the engine power system. The data transmission system transmits the collected test data to the control and data processing system. And the control and data processing system compares the received test data with the instruction data to realize automatic interpretation of the system polarity test. The liquid rocket polarity test data and the system data are effectively and deeply fused, the accurate closed loop of the data is realized, the requirements of systematization and automation of carrier rocket test are met, the product reliability is improved, and the production efficiency is also improved.

The invention discloses a vehicle and a control method and a control device thereof. The method comprises the following steps: acquiring the required power of a whole vehicle, the heat production capacity and the heat dissipation capacity of the whole vehicle within a preset time, and the residual charge capacity and the temperature of a power battery; determining basic distribution power of the engine based on the residual charge quantity and the required power of the whole vehicle; under the condition that the whole vehicle heat production amount is larger than the whole vehicle heat dissipation amount or the temperature of the power battery is larger than a first preset temperature threshold value, the power of the power battery is limited to be a first preset power threshold value, the basic distribution power of the engine is adjusted based on the whole vehicle demand power and the first preset power threshold value, and the target power of the engine is obtained; and controlling the engine based on the engine target power. According to the control method, the power of the engine and the power of the power battery can be relatively balanced, uncontrollable temperature rise of a single assembly cannot be caused even if the load is continuously high, the good performance of the vehicle can be maintained for a long time, the cost is reduced, and the hardware heat dissipation capacity does not need to be upgraded by spending extra cost.

The present invention proposes a performance evaluation method, system, storage medium and vehicle for an engine cooling system, the method comprising: obtaining the vehicle thermal management issuance operating conditions, water temperature target and pressure target according to vehicle parameters; performing an engine thermal load test according to engine speed, engine power and engine torque to obtain the thermal load of the engine under the corresponding vehicle operating conditions; constructing an initial three-dimensional model of the cooling system according to the thermal load of the engine, and obtaining the water flow, pressure distribution and vehicle water temperature distribution of each component of the cooling system according to the initial three-dimensional model of the cooling system to evaluate the cooling performance, and optimizing the initial three-dimensional model of the cooling system according to the evaluation results to obtain the final three-dimensional model of the cooling system. The performance evaluation method of the engine cooling system proposed by the present invention can perform a comprehensive evaluation before designing the cooling system, and continuously optimize the evaluation results so that the engine cooling system can achieve a better cooling effect.

The present application provides a vehicle and its thermal management control method, device and storage medium, wherein the vehicle includes an engine and a thermal management system, the thermal management system includes a water pump, the engine and the water pump are connected to form a first cooling cycle, and the thermal management control method includes: when the current temperature of the engine is less than or equal to a preset temperature threshold, and the total engine power is greater than or equal to a preset power threshold, and the current vehicle speed is less than or equal to a preset vehicle speed threshold, controlling the water pump to periodically switch between a start state and a stop state. The thermal management control method provided in the present application, when the engine is in a high-power, low-speed warm-up mode, periodically controls the water pump to switch between a start state and a stop state, thereby avoiding local overheating of the engine and placing the thermal management system in a state of minimum power consumption.

The invention discloses a turboshaft engine complete machine surge boundary determination method, system and device, and belongs to the technical field of turboshaft engines, the turboshaft engine complete machine surge boundary determination method comprises the following steps: determining whether an engine power turbine overrotates; if the power turbine is over-rotating, over-rotating protection is carried out, and the fuel flow is adjusted to the set flow; and after the fuel flow is adjusted, power turbine over-rotation oil drainage reignition tests under different engine powers are carried out, and the engine surge boundary is determined according to test results. According to the method, the complete surge boundary of the whole engine state can be obtained through the dynamic fuel step method based on the over-running oil drainage reignition test, the engine and a test bed do not need to be greatly transformed, only the over-running oil drainage time sequence needs to be adjusted in the test process, and the method is easy to implement.

The invention relates to the technical field of power control, and discloses a main hydraulic power setting method and device of an excavator, the excavator and a storage medium. The actual power of an engine cooling system is calculated based on the current engine water temperature or the engine intercooling temperature, the actual air conditioner refrigeration power is determined based on the air conditioner refrigeration state, and then the difference between the maximum engine power and the actual power of a hydraulic cooling system, the actual power of the engine cooling system, the actual air conditioner refrigeration power and the preset engine reserved power is obtained; and finally, the target main hydraulic power is applied to a main pump corresponding to the excavator to operate, so that it is guaranteed that the hydraulic main power is in a better state, and the engine power is brought into play to a greater extent.

A powertrain and control method that generates and transfers drive torque to a driveline of a hybrid electric vehicle is provided. The powertrain includes an internal combustion engine (ICE), at least one electric motor powered by a high-voltage battery, an integrated dual charge module (IDCM) and a controller. The controller is configured to: determine whether an external load is connected to the vehicle through the IDCM; determine an available engine-based power; determine whether the available engine-based power is above a threshold to support thermal loads; command power consumption from the high-voltage battery based on a determination that available engine-based power is not above the threshold; command power consumption from the ICE based on a determination that available engine-based power is above the threshold; and command a blending of power between the high-voltage battery and the ICE.

The invention relates to the technical field of compressed air energy storage, and discloses an anti-galloping control method and device applied to power generation of an expansion machine, and the method is applied to an anti-galloping device comprising a power generator connected with the expansion machine and a load compressor. The method comprises the steps that the rotating speed of the expansion machine is monitored in real time; when it is judged that the expansion machine has the galloping risk based on the rotating speed, an overspeed-preventing quick-opening valve is controlled to be opened, and external air enters a load compressor; wherein the grading response mechanism comprises the following steps: dividing the galloping risk into a plurality of risk grades according to the amplitude and / or duration of the rotating speed exceeding the rated rotating speed; and aiming at different risk levels, controlling the anti-overspeed quick-opening valve to be opened to different preset opening degrees, and applying corresponding loads to the two compressors. According to the invention, a set of intelligent anti-galloping control system is constructed, and the operation continuity and reliability of the compressed air energy storage system are maintained to the greatest extent while the safety of the expansion machine is guaranteed.