332 results about "Engine power" patented technology

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 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 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.

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.

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.

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.

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).

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.

The invention provides a control method and device for a series loader and the series loader. The method comprises the steps that first power is determined according to the current gear of the loader and the current charge state of a power battery; second power is determined according to the target pedal opening degree, the current gear and the current charge state; determining third power according to the first power and the second power; obtaining the current power of the working motor to obtain fourth power, obtaining the current power of the walking motor to obtain fifth power, and performing power battery peak power verification on the fourth power and the fifth power according to the third power; and controlling the working motor to operate according to the fourth power and controlling the walking motor to operate according to the fifth power under the condition that the verification is passed. According to the method, the problems that in the prior art, engine power is only related to SOC, due to simultaneous output of a working motor and a walking motor, instantaneous output power of a power battery frequently exceeds a peak value, and the service life of the battery is affected are solved.

The invention discloses an oxygen concentration control method and system for an engine, and belongs to the technical field of engine power systems.The method comprises the steps that the current intake oxygen concentration, the current operation rotating speed and the current intake manifold pressure of the engine are collected; generating a target parameter correction instruction based on the current intake oxygen concentration, the current operation rotating speed, the current intake manifold pressure and a pre-constructed pulse spectrogram; and based on the target parameter correction instruction and a preset operation rotating speed fluctuation range threshold value, the engine is controlled to operate stably. According to the scheme, the intake oxygen concentration, the operation rotating speed and the intake manifold pressure of the engine are combined with the pulse spectrogram calibrated under the target oxygen concentration and the target air-fuel ratio, dynamic regulation and control of the operation parameters of the engine and closed-loop correction of the combustion state are achieved, the intake oxygen concentration and the air-fuel ratio of the engine can be accurately and stably controlled, and the engine efficiency is improved. And it is guaranteed that efficient and stable combustion of fuel oil of the engine can be achieved under different working conditions.

1. Name of the designed product: power plant of combustion engine. 2. Use of the designed product: power plant for generating electricity. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1. 5. The bottom view is not a common face, and the bottom view is omitted.

An aircraft powerplant assembly includes a gearbox and a power coupler. The gearbox includes a first engine power transfer apparatus, a second engine power transfer apparatus and an accessory power transfer apparatus. The power coupler is mounted to the gearbox. During a first operating mode, the power coupler is configured to operatively couple the first engine power transfer apparatus to the accessory power transfer apparatus and operatively decouple the second engine power transfer apparatus from the accessory power transfer apparatus. During a second operating mode, the power coupler is configured to operatively couple the second engine power transfer apparatus to the accessory power transfer apparatus and operatively decouple the first engine power transfer apparatus from the accessory power transfer apparatus.

The invention relates to the field of air cylinder sleeves, and discloses a low-needle-shaped burr air cylinder sleeve, a process and application, the low-needle-shaped burr air cylinder sleeve comprises an air cylinder sleeve body and burrs formed on the air cylinder sleeve body, and the height H of the burrs ranges from 0.2 mm to 0.6 mm; a gentle slope angle alpha of 25-65 degrees is formed between the roots of the burrs and the outer surface of the cylinder sleeve; the burr surface roughness Rz is less than 15; and the ratio of the void volume among the burrs to the volume of the burrs is 1.5: 1-5.0: 1. Through the low burr height of 0.2-0.6 mm, the gentle slope of 25-65 degrees and the low-roughness surface with the RZ smaller than 15, the flowing resistance of molten aluminum is jointly reduced, the flowing speed of the molten aluminum is increased by 15%-25%, the temperature drop is reduced by 8%-12%, and the mold filling capacity is enhanced; the ratio of gaps with the burrs larger than or equal to 1.8: 1 to the volume is matched with low roughness, the gaps are fully filled with molten aluminum, the gaps between aluminum and iron of a blank are reduced by 20%-40% after die casting is completed, and the heat dissipation efficiency is improved by 25%-35%; good aluminum-iron combination and heat conduction enable the thermal stress of a cylinder hole to be uniform, the deformation amount is reduced by 30%-50%, and sealing is guaranteed; and finally, the engine power is promoted to be increased by 5%-10%, and the energy consumption is

The invention discloses a new energy hybrid power system multi-performance index system establishment method, and relates to the technical field of new energy automobile energy management, and the method comprises the steps: firstly establishing a state-space equation of a new energy hybrid power system, and constructing a power balance relation based on a vehicle longitudinal dynamics model; factors such as air resistance, rolling resistance, slope resistance and acceleration resistance are comprehensively considered, and a dynamic coupling relation among engine power, motor / battery power, a battery state of charge (SOC) and emission variables is established; secondly, constructing a Hamiltonian function of a system performance index by utilizing a Pontryagin minimum principle, and introducing a co-state variable to establish an adjoint equation, so as to form a multi-dimensional performance index system including economical efficiency, dynamic property, emission property and battery stability;

The invention discloses a load translation control method for a hybrid diesel locomotive considering a diesel engine and a gas engine. The method comprises the following steps: in a ground bench test, respectively simulating typical operation conditions of the diesel / gas engine, and determining respective safe power fluctuation intervals; in the running process of the hybrid diesel locomotive, the output power of the diesel / gas engine is dynamically corrected based on the power fluctuation threshold value of the running data; and scene-based multi-energy load translation control is carried out, the scene comprises the dynamic operation characteristics of acceleration and deceleration of the train, and the engine power of the hybrid diesel locomotive is adjusted according to the working mode of the power battery and the power fluctuation difference value, so that the load translation of the hybrid diesel locomotive is met based on the engine power. According to the method, multi-energy cooperative control considering load translation, scientific and controllable threshold value and working condition adaptation is achieved, the comprehensive traction force of the hybrid diesel locomotive is improved, and energy conservation and emission reduction are achieved.

This invention discloses a performance optimization device for a blower used in particle separator sand removal. This device innovatively provides a test method for effectively comparing and optimizing the performance parameters of the sand removal blower, filling the gap in existing technologies where effective performance parameter selection for blowers configured on the sand removal devices of aero-engine particle separators is not possible. This design device and testing method can effectively guide the optimization design of the aerodynamic characteristic parameters of the sand removal blower, enabling the blower to achieve high sand and dust suction efficiency while minimizing engine power extraction, thereby helping to meet the ever-increasing performance and reliability requirements of aero-engines.

The invention belongs to the helicopter assembly technology, and particularly relates to a small-size power transmission shaft coaxiality calibration device and method. The connection mode of the power transmission shaft and the input end of the main speed reducer is simulated, the relation between the transmission axis and the main speed reducer input axis is analyzed, and the installation coaxiality of the power transmission shaft is converted into a measurable value. The process adjustment amount in the structure is reasonably utilized, and the coaxiality of the power transmission shaft is adjusted while the coaxiality detection of the small-size power transmission shaft is adapted. The device can fully simulate the actual included angle condition after the installation of the engine power transmission shaft and the main reducer input shaft axis, achieves the synchronous measurement and adjustment through setting an adjustment link, and simplifies the installation and adjustment process of the power transmission shaft. The actual included angle after the axes of the engine power transmission shaft and the main reducer input shaft are installed is converted into the measured value of the dial indicator, errors caused by manual operation are reduced, and the aircraft assembly quality is improved while the installation and adjustment precision is guaranteed.

The invention discloses an engine ignition control method and a related device, and relates to the technical field of engine control. The engine ignition control method comprises the steps that the actual water content of methanol fuel of a target engine is obtained; adjusting the ignition energy of an ignition coil according to the actual water content so as to perform ignition control on the target engine; wherein the ignition energy of the ignition coil is in positive correlation with the actual water content. The water content of the methanol fuel of the engine can be measured in real time, then the ignition energy of the ignition coil is adjusted according to the water content, the higher the water content of the methanol fuel is, the larger the corresponding ignition energy of the ignition coil is, and therefore the relatively rarefied methanol fuel can be successfully ignited; therefore, stability of combustion in an engine cylinder is guaranteed, and engine power is improved.

The invention relates to the technical field of ship energy management, in particular to an energy consumption management and control method and system for an intelligent ship, and the method comprises the steps: carrying out the working condition self-adaptive switching and precise management and control of an oil-electricity hybrid power system, combining with the real-time optimization of a hydraulic dynamometer on the power output of an engine, effectively avoiding the operation of the engine in a low-efficiency interval, and improving the energy efficiency. And the fuel consumption is obviously reduced. The energy consumption prediction and optimization model based on machine learning can realize prospective management and control of ship energy consumption, and passivity and experience dependence of traditional energy consumption management are avoided; the problems that most ship energy consumption management and control are in a passive response mode, the self-adaptive optimization capability based on an intelligent algorithm is lacked, the management and control strategy cannot be dynamically adjusted according to the navigation working condition, and the refinement degree is insufficient are solved.

This application relates to the field of vehicle technology, and in particular to a method, apparatus, and vehicle for controlling the engine power follow-up in a hybrid electric vehicle. The method includes: in response to the vehicle entering launch control mode, acquiring the current state of charge (SOC) value of the power battery; determining a target follow-up strategy for the engine based on the SOC value, controlling the engine to operate according to the target follow-up strategy, and detecting the release time of the brake pedal; when the release time falls within a preset time window, controlling the engine to switch to target output power operation. This solves the problems of battery overcharging risk and low matching degree between engine power output and driver's launch intention in related technologies, which affect the overall vehicle acceleration performance.

The utility model discloses a modularized noise reduction soundproof cover for a gas turbine power plant, which comprises a soundproof plate, a basic side plate, a clamping side plate and a movable cover plate, and the basic side plate, the clamping side plate and the movable cover plate are all made of the soundproof plate; the base side plates are oppositely arranged, and the clamping side plates are oppositely arranged at the two ends of the pair of base side plates to form a rectangular frame structure. A side plate connecting piece is arranged at the abutting part of each clamping side plate and the basic side plate; a movable cover plate is detachably arranged at the upper end of a rectangular frame structure formed by the foundation side plates and the clamping side plates, and top cover connecting pieces are arranged at the abutting positions of the periphery of the movable cover plate and the upper end of the rectangular frame structure. The pair of basic side plates, the clamping side plates and the movable cover plate are detachably assembled to form the sound-proof cover, when the local position of the sound-proof cover is damaged and needs to be maintained, the sound-proof plate structure at the position can be detached for maintenance or replaced, and the sound-proof plate structure can also be detached into an independent plate structure, so that the sound-proof cover is convenient to transfer and store.