595 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 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.

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.

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 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 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.

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.

To provide a controller of a hybrid vehicle which can suppress a relay selectively connecting between a power storage device and a control unit to drive a motor from being solid-phase bonded.SOLUTION: A controller of a hybrid vehicle comprises: a first motor which converts power of an engine into electric power; a second motor which is driven by the electric power generated by the first motor; a step-up converter which boosts output voltage of a battery to be output to respective motors; a relay which is arranged between the battery and the step-up converter; a low voltage capacitor which is arranged close to the battery side relative to the step-up converter; and a high voltage capacitor which is arranged close to respective motor sides relative to the step-up converter. In a case that conductive state of the relay continues for a predetermined time period or more, voltage of the high voltage capacitor is kept being higher than that of the low voltage capacitor (step S3) and then the relay is switched to a cut-off state (step S6).SELECTED DRAWING: Figure 4

The invention discloses an excavator heat balance performance prediction method, system and device and a storage medium. The method comprises the steps that a heat balance performance test of a standard excavation working condition is conducted; respectively establishing an engine heat dissipating capacity Qw calculation model and an engine air inflow mair calculation model; obtaining Qw and mair under the standard excavation working condition; building a one-dimensional cooling system model; cabin resistance coefficient calibration is completed; setting the heat dissipation power of the hydraulic system, calculating the real-time oil temperature of the hydraulic oil tank based on the one-dimensional cooling system model, adjusting the heat dissipation power of the hydraulic system to enable the difference value between the real-time oil temperature of the hydraulic oil tank and the oil temperature of the hydraulic oil tank to be smaller than a set value, and calculating the ratio b of the heat dissipation power of the hydraulic system to the engine power; and on the basis of a calculation model of Qw and mair, b and the calibrated cabin resistance coefficient, predicting the heat balance performance of the excavator under the target working condition. According to the method, the design accuracy and economy can be improved, the prediction of the full-working-condition heat balance performance is realized, and the high-temperature fault solving efficiency is accelerated.

A propulsion system for an aircraft includes a gas turbine engine and an engine power extraction system. The gas turbine engine includes a first rotational assembly. The first rotational assembly includes a propeller and a first shaft coupled to the propeller. The first shaft is configured for rotation about a rotational axis of the propulsion system. The engine power extraction system includes a fluid pump, a fluid motor, and a generator. The fluid pump is operably coupled to the first shaft. The fluid pump is in fluid communication with the fluid motor. The fluid pump is configured to pressurize and direct a hydraulic fluid to the fluid motor causing the fluid motor to rotatably drive the generator to generate an electrical power output.

The invention belongs to the technical field of piston engines, and particularly relates to a variable-volume crankcase which is integrated with a deformable and automatically-recoverable device, a variable-volume cavity is formed in the crankcase through a deformable or slidable diaphragm, and particularly, an elastic reset element is arranged in the upper surface of the device, so that the variable-volume cavity is formed in the crankcase. It is ensured that the diaphragm can stably and regularly move and reset after deforming or sliding; power for deformation or sliding of the diaphragm comes from periodical extrusion of an engine crank to the diaphragm, by correctly matching a volume change curve of the crankcase with an air distribution phase, the volume of the crankcase is enlarged during air inlet, so that negative pressure in the crankcase is increased, the volume of the crankcase is reduced during scavenging, pressure in the crankcase is increased, and the service life of the crankcase is prolonged. The technical problems of insufficient air intake, low scavenging efficiency, power attenuation and the like of a two-stroke piston engine under the low air pressure condition are solved, and a feasible solution is provided for power improvement of a small aero-engine and power recovery in a high-altitude environment.

The invention provides a composite feedforward cooperative control method and system for propulsion of a controllable-pitch propeller of a ship. The method comprises the following steps: establishing a propulsion composite model comprising a ship load inquiry function model and a controllable-pitch propeller propulsion cooperative control model; identifying ship resistance characteristics in real time through a load inquiry model, predicting main engine power and propeller rotating speed requirements at different navigational speeds, and calculating a main engine power margin; setting a host security threshold based on the maximum persistent power margin; within the allowable range of the safety threshold value, three cooperative control modes are selected and executed in a self-adaptive mode according to the navigation working condition, wherein the three cooperative control modes include the pitch-accelerator joint control mode under the constant rotating speed of a main engine, the main engine rotating speed-accelerator joint control mode under the fixed pitch of a controllable-pitch propeller and the controllable-pitch propeller rotating speed-pitch joint control mode under the constant power of the main engine. According to the invention, through feedforward prediction and multivariable cooperation, navigational speed closed-loop stable control is realized, the problems of host overload, black smoke emission, high exhaust temperature and large control fluctuation are fundamentally avoided, and fuel economy and all-condition navigation safety are improved.

A method for controlling noise of a vehicle, comprising: when a state of charge of a battery is greater than a preset state of charge, acquiring a vehicle speed, a gear position, an electronic handbrake state, and an automatic parking state of a current vehicle; on the basis of the vehicle speed, the gear position, the electronic handbrake state, and the automatic parking state, determining whether to activate a noise control mode of the vehicle; when activating the noise control mode, on the basis of the vehicle speed, obtaining a first engine power of the vehicle; and, on the basis of the first engine power, controlling noise of the vehicle. The present invention also relates to an apparatus for controlling noise of a vehicle, a device for generation of noise control, and a storage medium.

The invention relates to the technical field of vehicle control, in particular to an engine power compensation control method, electronic equipment and a vehicle. The method comprises the steps that current environment data of the vehicle and engine running state data are obtained; inputting the environment data into an environment prediction model, and extracting current environment features; the current environment data and the engine operation state data are jointly input into an engine torque prediction model, and the maximum engine torque value in the current environment is obtained; inputting the current environment characteristics and the maximum torque value into a torque compensation control instruction generation model to generate a corresponding torque compensation control instruction; and finally, performing power compensation control on the engine according to the instruction. According to the method, a cooperative control framework integrating environment prediction, torque estimation and intelligent decision making is constructed, dynamic precise compensation of engine dynamic response in a complex environment is achieved, and the torque output precision and the self-adaptive control capacity of the vehicle under special working conditions are effectively improved.

A kind of wheel holding device of aircraft tractor, it includes: car body, pedestal turntable, load floor, hydraulic cylinder group, clamping push plate, rotating motor and front pressing plate;Pedestal turntable, load floor, hydraulic cylinder group, clamping push plate, rotating motor and front pressing plate are all installed on car body.The wheel holding device of aircraft tractor provided by the present application has the advantages that: the wheel holding device does not need engine power, and moves by external ground power from the exit of the aircraft to the end of the runway waiting for takeoff, and the pilot controls the tractor to carry out departure operation, with the advantages of simple operation, safety, stable work, long service life, high lifting height, wide application range, etc.

A self-regulating temperature float-type fuel tank, relating to the field of engine fuel tank technology, includes a tank body with an oil inlet at the top and an oil outlet at the bottom. Inside the tank body are a heater, a temperature sensor, and a cooling core. The heater and cooling core are horizontally positioned above the oil outlet, and the temperature sensor is positioned close to the oil outlet. The cooling core includes several cooling pipes and several clamping plates, which are vertically spaced. The cooling pipes pass horizontally through the clamping plates, and their two ends are connected to the tank body. Water inlets and outlets, communicating with the interior of the cooling pipes, are installed on the side walls of the tank body. The water inlets are connected to a water pump. This application can change the original cooling method, improve cooling efficiency, reduce engine output loss, adjust engine power output in a timely manner, and improve user experience.

The embodiment of the invention provides a simulation method and device for automatic deceleration of a spoiler of a medium-sized propeller-driven aircraft, computer equipment and a medium, and the method comprises the following steps: determining a use scene in which the spoiler of the aircraft needs to be automatically decelerated, according to the use scene of automatic deceleration, flight data needing to be introduced into the simulation system is determined, and the flight data comprises a ground signal, a speed signal, an engine power signal and a spoiler normal working signal; according to the flight data, judging whether an entry condition for starting to use an automatic deceleration function is met, and if yes, unfolding the spoilers on the two sides to the maximum through a simulation system to automatically decelerate the aircraft; and continuously monitoring the flight data until the quit condition of quitting the automatic deceleration function is met, quitting the automatic deceleration, and resetting the double-side spoilers through the simulation system. According to the scheme, a method for automatically decelerating the ground through the spoiler is designed, and the effectiveness of the scheme is verified through simulation.

The present application relates to the technical field of unmanned aerial vehicle intelligent control, and particularly relates to a method and system for analyzing the power of an unmanned aerial vehicle engine based on self-adaptive working conditions. The method comprises the following steps: obtaining flight task data; extracting task behavior according to the flight task data to obtain task behavior data; mapping working conditions according to the task behavior data to obtain working condition data; extracting features from the working condition data to obtain working condition feature data; identifying working condition discontinuity according to the working condition feature data to obtain working condition discontinuity data; and re-estimating the power demand of a sudden working condition according to the working condition discontinuity data to obtain sudden working condition power demand data. Through working condition identification and dynamic power re-estimation driven by task behavior, the present application can adaptively respond to load fluctuations and sudden disturbances in dynamic flight tasks of unmanned aerial vehicles, and achieve engine thrust control and energy consumption optimization.

A method for operating an aircraft includes determining (902A, 902B, 904, 905) a shaft horse power requirement of a multi-engine power plant, comparing (906) the shaft horse power requirement to a threshold value, and activating (908) an economy mode of operation or inhibiting (910) the economy mode of operation based upon the results of the comparison step (906). The threshold value may be determined from a power rating for an engine of the multi-engine power plant, and may be adjusted and / or delayed, depending upon whether the current state is economy mode active or economy inhibited. The shaft horse power requirement can be calculated from a control input, such as collective position, from a collection of flight parameters, including airspeed, aircraft gross weight, altitude, and the like, or from a measurement of actual shaft horse power production by the engines

The utility model discloses an engine power pack transferring device, which belongs to the technical field of engine carrying equipment and comprises a movable base, a supporting plate is slidably connected to the top of the movable base, supporting legs are symmetrically and fixedly connected to the outer side of the supporting plate, and a plurality of groups of first pulleys are arranged at the bottom of the movable base. The output end of the electric telescopic rod is fixedly connected with the bottom of the first connecting rod; in the moving process, if the horizontal position of the engine power pack needs to be finely adjusted, the second motor can be started, the second motor serves as a double-shaft motor, the gear at the output end of the second motor rotates synchronously and is meshed with the rack in the inner groove of the moving base, and the horizontal position of the engine power pack is adjusted through transmission of the gear and the rack. The output end of the electric telescopic rod pushes the first connecting rod to ascend or descend, the second connecting rod is in sliding connection with the first connecting rod and is fixed to the clamping plate, the first connecting rod moves to drive the clamping plate to move up and down, and flexible adjustment of the height of the power pack is achieved.

The application discloses a kind of identification methods of the influence factor of aero-engine power control device parts working process, it is related to aero-engine maintenance technical field, by the risk level and repair means effectiveness level of data quantization baseline unit are matched diagnosis, to judge whether the current maintenance means can be matched with the risk level of parts, effectively improve the control precision of influence factor in repair process, eliminate internal and external field product quality hidden danger, comprehensively improve the quality prevention ability, process control ability and quality control ability in product repair process, it plays a guiding role to the systematic method of process development and optimization.

The invention discloses a control method, device and system for a diesel engine supercharger. The control method comprises the following steps that current state data of a diesel engine are obtained; according to the rotating speed of the engine and the fuel injection quantity, the current intake manifold required pressure is determined in a table look-up MAP mode; determining a correction coefficient according to the altitude; determining a demand pressure value according to the correction coefficient and the current intake manifold demand pressure; and the real-time air inlet pressure of the air inlet manifold is obtained, and the opening degree of the electronic throttle valve is controlled according to the required pressure value till the real-time air inlet pressure of the air inlet manifold is equal to the required pressure value. According to the method, the engine rotating speed, the oil injection quantity and the corresponding optimal required pressure are determined through the bench test when the real-time rotating speed of the supercharger is equal to the supercharger rotating speed limit value, the current required pressure of the intake manifold can be determined through table look-up in actual operation, and it is guaranteed that the supercharger does not overspeed; and the problem of engine power loss caused by fuel injection quantity reduction is avoided.

The present invention provides a vehicle control method, device, vehicle, and readable storage medium. The method includes: controlling the hydraulic clutch to disengage when the vehicle is in an idle state and a hydraulic clutch disengagement condition is met; the hydraulic clutch disengagement condition includes: the vehicle's engine water temperature is greater than or equal to a first preset water temperature, and / or the vehicle is in an idle state for a duration greater than or equal to a preset duration. By controlling the hydraulic clutch to disengage when the vehicle is in an idle state and the hydraulic clutch disengagement condition is met, the present invention reduces engine power output and engine load, thereby reducing engine heat generation and preventing excessive temperatures and thermal damage to the engine and surrounding components.

Disclosed is a Hall-effect propulsion system comprising a Hall-effect thruster (10), a cathode (40), and an electrical power supply (80) including an engine power supply (81) delivering an engine discharge current (Id) to the cathode (40) allowing an engine discharge (DM) to be created in a gas contained in the Hall-effect thruster (10), and a secondary power supply (82) delivering a secondary discharge current (Ik) to the cathode (40). The Hall-effect propulsion system comprises means (90) for controlling the electrical power supply (80), which are configured to command delivery of a secondary discharge current (Ik) by the secondary power supply (82) to the cathode (40) in order to keep the cathode (40) at a minimum operating temperature between two activations of the engine power supply (81).