924 results about "Oil consumption" patented technology

The invention belongs to the technical field of bioengineering and the technical field of food engineering, and discloses a regulation and control method for improving the DHA content and the sn-2 DHA proportion in schizochytrium limacinum grease fermentation liquor, schizochytrium limacinum algae powder and application of the schizochytrium limacinum algae powder. In the fermentation culture process, the pH of fermentation liquor in the fermentation process is controlled by supplementing acid or alkali in stages. According to the method disclosed by the invention, the pH value of the fermentation liquor is regulated and controlled in stages in the fermentation culture process of the schizochytrium limacinum, and the schizochytrium limacinum can obtain a higher splitting propagation speed, a longer grease accumulation period and a shorter grease consumption end period by regulating and controlling the pH value in the fermentation process. According to the obtained schizochytrium limacinum grease, the oil yield is obviously improved compared with that of a traditional fermentation strategy, and the DHA content and the sn-2 DHA proportion in the oil are also obviously improved.

The invention relates to a ship operation energy consumption prediction method considering an actual storm condition. The method comprises the following steps: fusion and data processing of multi-source navigation environment data; the still water resistance and the wave increase resistance are calculated through a program, and the navigational speed-power relation of the ship under the actual wind wave condition is calculated; predicting the power-oil consumption relation of the ship according to the route segments: based on the navigational speed-power relation of the ship under the actual storm condition, establishing a prediction agent model of the power-oil consumption relation of the ship according to the historical oil consumption data of the ship; and ship operation energy consumption prediction: combining the annual route segment information of the ship, predicting the agent model based on the branch route segment ship power-oil consumption relation, thereby obtaining the oil consumption of each route segment of the ship in the whole year, and calculating the annual operation energy consumption of the ship. According to the method, the prediction precision is remarkably improved, the generalization ability and the real-time response speed of the model are enhanced, and powerful support is provided for energy conservation and emission reduction of ships.

The invention provides a vehicle power generation control method, a controller, a vehicle and a storage medium. The vehicle power generation control method comprises the steps that the characteristic power # imgabs0 # of a vehicle comprising a range extender under all typical working conditions is determined, and the typical working conditions of the vehicle comprise the light load working condition, the light medium load working condition, the medium load working condition, the medium heavy load working condition and the heavy load working condition; based on the characteristic power # imgabs1 # of the vehicle under each typical working condition, the optimal power generation power of the range extender under each characteristic power # imgabs2 # is determined, and the optimal power generation power is the power generation power of the range extender with the highest power generation capacity under unit oil consumption; the actual required power # imgabs3 # of the vehicle is calculated; according to the actual required power # imgabs4 # of the vehicle, whether the range extender works or not is determined, and when the range extender works, the power of the range extender is made to be equal to the optimal power generation power under the characteristic power # imgabs6 # corresponding to the actual required power # imgabs5 # of the vehicle. In this way, vehicle energy consumption can be reduced.

The invention relates to the technical field of new energy automobile charging, in particular to a new energy automobile driving and charging behavior optimization method and system, and the method comprises the steps: S1, data collection: collecting vehicle travel data, charging data, endurance data, oil consumption and power consumption data, mileage credibility data and mileage data; s2, data processing: preprocessing the collected data, including data cleaning, data format conversion and feature extraction, to ensure the quality and consistency of the data; s3, data analysis: analyzing the preprocessed data based on a multi-dimensional data model and a machine learning algorithm, and identifying key factors affecting the performance of the new energy vehicle; and S4, optimization suggestion: generating personalized driving and charging optimization suggestion according to the data analysis result, and helping the user to optimize the driving behavior and the charging strategy. The driving and charging behaviors of the new energy automobile can be optimized in combination with the condition of the user, and the energy utilization efficiency and the endurance mileage of the new energy automobile are improved.

The present application relates to the field of engineering machinery. Provided are an oil consumption self-optimization control method and apparatus and a work machine. The method comprises: acquiring a plurality of actual working condition points of an engine under a current gear within a preset duration; on the basis of a rotation speed measurement value and a torque measurement value of each actual working condition point, determining a centralized working condition point of the engine; determining a target oil consumption area of the engine on the basis of a preset oil consumption model and the rotation speed measurement value and the torque measurement value of each actual working condition point, and, on the basis of the preset oil consumption model, determining oil consumption corresponding to the centralized working condition point; and if the oil consumption corresponding to the centralized working condition point does not satisfy the target oil consumption area, determining a candidate rotation speed of the engine on the basis of the target oil consumption area, and, on the basis of the candidate rotation speed and the maximum-power point among the plurality of actual working condition points, determining a target rotation speed of the engine.

The invention relates to the technical field of automobile power system control, in particular to an automobile start-stop system management method based on intelligent control, which comprises the following steps: S1, a multi-mode environment sensing system; s2, a deep reinforcement learning decision framework; s3, hierarchical cooperative control execution; s4, a real-time health assessment system; s5, a cloud collaborative optimization mechanism; through intelligent start-stop strategy optimization and energy recovery management, under the urban congestion working condition, compared with a traditional start-stop system, the method can further reduce oil consumption by 15-20%; and under the comprehensive working condition, the oil consumption can be reduced by 8-12%. The fuel consumption cost of the vehicle is reduced, the development trend of global energy conservation and emission reduction is also met, and important economic and environmental significance is achieved.

The invention provides a sowing operation agricultural machinery scheduling method and device based on joint optimization, and the method comprises the steps: constructing an agricultural machinery configuration model N according to the total area of a farm and the width of an agricultural implement in harvesting operation; according to the yield of the standard sowing period and the early sowing area, constructing an actual yield model Yac under the influence of the sowing period; according to the fuel price and the number of days of sowing operation, a fuel consumption cost model Cs of sowing agricultural machinery operation is constructed; constructing a labor cost model Cc according to the labor cost per unit time; according to the agricultural machinery configuration model N, the actual yield model Yac, the oil consumption cost model Cs and the labor cost model Cc, constructing a target model representing the relationship among various agricultural machinery resources, operation time and profits required by sowing; according to the agricultural machinery operation time upper limit, the agricultural machinery total number upper limit and the farm total area upper limit, constructing a restriction constraint of the target model, and under the restriction constraint, solving an agricultural machinery scheduling strategy when the output profit of the target model is maximum; and executing the seeding task of the crops according to the agricultural machinery scheduling strategy.

The invention relates to the technical field of data processing, in particular to a vehicle energy consumption data monitoring method based on a sensor, and the method comprises the steps: obtaining the average oil consumption of the vehicle speed in each speed range in the whole process of driving a vehicle according to the oil consumption and the driving distance when the vehicle speed is in each speed range in the whole process of driving the vehicle each time; according to the remaining oil quantity after each time of vehicle driving, the actual driving distance of the remaining oil quantity and the average oil consumption of the vehicle driven each time, the difference between the actual driving mileage and the estimated driving mileage all the time is obtained; according to the difference between the previous real driving mileage and the estimated driving mileage, the remaining fuel quantity of the driving vehicle at the current moment and the average fuel consumption corresponding to the speed range of the vehicle speed, the corrected remaining mileage at the current moment is obtained; and monitoring the vehicle energy consumption data according to the corrected remaining mileage at the current moment. The accuracy of vehicle energy consumption monitoring is improved.

The invention provides a fuel consumption analysis method, electronic equipment, medium and system for a mine vehicle, and the method comprises the steps: obtaining the state information of the vehicle and the road information of a mine, the road information comprising the longitude, the latitude and the elevation; dividing the road into a plurality of line segments according to the road information, removing curve line segments, leaving straight line segments, and storing the longitudes, latitudes and elevations of the plurality of straight line segments as a first sample library; calculating the gradient of each straight-line segment in the first sample library according to the elevation, and correspondingly storing the gradient of each straight-line segment, the longitude, the latitude and the elevation to form a second sample library; classifying samples in a second sample library according to the state information and the gradient of the vehicle to form a plurality of classification groups; and in each classification group, analyzing the relationship among the state information of the vehicle, the gradient and the fuel consumption of the vehicle. The technical problem that systematic, complete and effective oil consumption data of the mining vehicle cannot be accurately obtained in the prior art is solved, and the influence of the speed and load conditions of the mining vehicle and the slope of the road on the oil consumption is clearly and accurately known by adopting the oil consumption analysis method of the mining vehicle, so that the oil consumption analysis accuracy is improved. And the management of the mining vehicles can be refined and accurate.

A turbocharger device relates to the technical field of internal combustion engine supercharging devices and comprises a bearing body, an oil supply pipeline and an integrated bearing. The integrated bearing comprises a pressing end integrated bearing and a vortex end integrated bearing which are arranged in parallel in the axial direction, the bearing body comprises a bearing seat inner wall face, a supporting sleeve is rotationally arranged in the bearing seat inner wall face, and the pressing end integrated bearing and the vortex end integrated bearing are located on the two sides of the supporting sleeve; the pressure end integrated bearing and the vortex end integrated bearing are correspondingly connected with a first oil supply pin and a second oil supply pin which are communicated with inner cavities of the pressure end integrated bearing and the vortex end integrated bearing in the radial direction, and the first oil supply pin and the second oil supply pin are fixed to the bearing body. The split type bearing system is used for solving the problems that although a split type bearing system in the prior art avoids the influence of high temperature, engine oil consumption is large, inner oil film lubrication is insufficient, and cost is high; although an integrated bearing system realizes low cost and structure simplification, the key problems of sufficient lubrication of an inner oil film, high-temperature reliability of a thrust surface and oil control capacity of a gas compressor side are obviously short.

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.

The embodiment of the utility model relates to the technical field of electromagnetic valves, and discloses a high-temperature electromagnetic valve group. The high-temperature electromagnetic valve set comprises a plurality of electromagnetic valves, a plurality of main valves, a high-temperature fuel oil channel, a cold oil channel and a first channel. The plurality of main valves are respectively connected with the plurality of electromagnetic valves one by one, each electromagnetic valve comprises an electromagnetic valve upper valve seat, an electromagnetic valve lower valve seat, an electromagnetic valve upper valve core and an electromagnetic valve lower valve core, each electromagnetic valve is connected with an electromagnetic valve upper channel and an electromagnetic valve lower channel, and each main valve comprises a main valve pilot cavity and a main valve piston; and the high-temperature fuel oil channel comprises a high-temperature fuel oil inlet and a plurality of high-temperature fuel oil outlets, high-temperature fuel oil is introduced into inner cavities of the main valves through the high-temperature fuel oil inlet, and when the electromagnetic valves are powered off, the main valve pistons move upwards under the pressure action of the high-temperature fuel oil, the main valves are opened, and the high-temperature fuel oil flows out through the high-temperature fuel oil outlets. According to the device provided by the embodiment of the invention, the oil consumption of the high-temperature electromagnetic valve group can be reduced.

The invention belongs to the technical field of vehicle fairing control, and particularly discloses a vehicle fairing control method and system fusing oil consumption and wind resistance, a terminal and a medium. Comprising the steps that the speed, fuel consumption parameters and wind pressure parameters of a vehicle in the running process are obtained, and fuel consumption change parameters and wind pressure distribution characteristic parameters are extracted; a multivariable optimization model with the minimum comprehensive energy consumption as the target is constructed; based on the model, a model prediction control algorithm is adopted to solve the optimal control quantity of the attitude of the fairing in a prediction time domain, and control instructions of the angle and the deflection direction are generated; when environmental disturbance or attitude response deviation is detected, dynamically adjusting a target function weighting coefficient or an input penalty factor to correct control output; and adjusting the posture of the fairing in real time according to the corrected control instruction. Through fusion modeling of fuel consumption parameters and wind pressure characteristic information, predictive control and self-adaptive adjustment of the attitude of the vehicle fairing are realized, and fuel economy and aerodynamic performance can be considered under multiple working conditions.

The invention discloses an engine control method and a related device, and relates to the field of engines, an engine is provided with two EGR branches which are respectively connected with a large turbine runner and a small turbine runner, an engine controller determines a corresponding target EGR rate based on target performance parameters of the engine, a small runner EGR valve is controlled to be opened, and the small runner EGR valve is controlled to be closed. If the target EGR rate can be reached by only opening the small-flow-channel EGR valve, outputting a corresponding first target small-flow-channel EGR valve opening degree, and if the opening degree of the small-flow-channel EGR valve reaches the first set maximum opening degree and the corresponding EGR rate does not reach the target EGR rate, controlling the large-flow-channel EGR valve to be opened to reach the target EGR rate, and outputting a corresponding second target small-flow-channel EGR valve opening degree and a target large-flow-channel EGR valve opening degree. Two-way EGR gas taking is achieved by controlling the opening degree of the two-way EGR valve, the EGR rate is improved, meanwhile, the pumping loss and the rotating speed of the supercharger are reduced, and therefore oil consumption and NOx emission are reduced.

The invention discloses a V-shaped thrust retainer which comprises an annular main body, and the annular main body is provided with pockets for mounting a rotating body; the pocket is provided with a V-shaped limiting part for limiting the rotation body to move in the axial direction of the pocket; the annular body is further provided with an outer oil storage part for containing lubricating oil, a buffering part and a buffering ring, the buffering part is arranged between every two adjacent pockets, an oil storage cavity is formed in each buffering part, and the buffering ring is arranged on the side wall of the inner ring of the annular body. Compared with a traditional arc-shaped / annular flange and other structures, the V-shaped limiting part can reduce the contact area of the rotating part and the limiting structure, friction loss is reduced, and lubricating oil consumption is reduced; by arranging the buffering part, the buffering layer can play a role in absorbing and damping, so that the rolling path of the rotating body can be kept stable, collision impact and vibration generated in the rolling process are further reduced through the stability of the rotating body, and finally the damping and noise reduction effects of the retainer and the bearing are achieved.

The invention provides a navigational speed optimization method and device and electronic equipment, and relates to the technical field of navigational speed optimization, and the method specifically comprises the steps: collecting historical and current ship route data, environment parameters and ship load parameters; generating an oil consumption rate and an effective wind speed, and calculating an effective navigational speed and a load rate of the ship; according to the actual ship speed, the corresponding actual oil consumption rate of the ship and the actual distance of the sailed route, a comprehensive function about the oil consumption and the actual ship speed of the ship is constructed, according to the relation between the oil consumption and the actual ship speed, a comprehensive target function about the actual ship speed is generated, and the maximum actual ship speed serves as an optimization target. And optimizing the comprehensive objective function of the actual navigational speed of the ship to obtain an optimal solution of the navigational speed of the ship. According to the method, the collected parameters are combined, the influence of the parameters on the navigational speed is comprehensively reflected, the optimization precision of the constructed comprehensive objective function of the actual navigational speed of the ship is remarkably improved, and the method is suitable for different navigational conditions.

The invention relates to a ship main engine oil consumption modeling method and system based on noon report data, and the modeling method comprises a noon report data collection and screening step, a noon report data classification step, a ship type classification step, a partial load condition fitting modeling step and a unified fitting and draught correction modeling step. Modeling operand and modeling complexity are greatly reduced, meanwhile, multi-level classification of weather (wind level and wave level) and ship types under different dimensions is carried out, a plurality of ship main engine oil models are constructed by adopting a partial load condition fitting method, a unified fitting method and a draught correction method respectively, ship slip rate is adopted as an intermediate variable, and a ship main engine oil model is constructed. According to the method, the relation between the navigational speed and the ship slip rate and the relation between the oil consumption and the ship slip rate are fitted respectively, the fitting flexibility and the formula complexity are improved, the fitting effect is better, the multiple built ship main engine oil models are accurate and efficient, cost reduction, efficiency improvement and safe and reliable performance improvement of enterprises are facilitated, and environmental protection and compliance management can be promoted.

The invention provides a vehicle control method and device, a vehicle and a computer readable storage medium, the method is applied to a battery management system of the vehicle, and the method comprises the steps that under the condition that the vehicle is in a voltage control mode, the working state of a battery pack is obtained; wherein when the vehicle is in the voltage control mode, the vehicle starts an engine, the engine drives a power generation system to operate, the power generation system supplies power to a driving motor, the working state is used for representing whether a battery pack can provide high-voltage electricity for a high-voltage load of the vehicle or not, and the high-voltage load comprises the driving motor; according to the working state, whether the vehicle meets the switching condition of switching from the voltage control mode to the high-voltage control mode or not is judged; when the vehicle is in a high-voltage control mode, power is supplied to the driving motor through the battery pack; and switching the vehicle from the voltage control mode to the high-voltage control mode under the condition that the switching condition is met. The battery pack is preferentially used for supplying power to the driving motor, so that the oil consumption of the vehicle is reduced.

A method for determining engine oil system health includes determining an oil level in an engine oil sump of an engine, determining an oil consumption rate of the engine based on a current oil volume and a time at which the oil was last replenished, determining a remaining useful oil volume based on the oil consumption rate and duty cycle data of the engine, and generating an alert in response to the oil consumption rate being greater than a predetermined threshold, the alert comprising a command to a controller associated with the engine to cause the engine to perform an action.

The invention relates to the technical field of flow measurement, and discloses a ship fuel consumption whole-process online monitoring system and method.The system comprises a data acquisition module, a data regulation module, a temperature compensation module, a fuel consumption abnormity monitoring module, an energy efficiency evaluation analysis module and a data communication reporting module, and fuel flow and temperature data of a ship are acquired in real time; and a standardized data set is obtained after data normalization. According to the real-time fuel oil temperature, temperature-density coupling compensation is carried out on the volume flow, the volume error caused by thermal expansion and cold contraction is eliminated, and therefore the net fuel oil consumption is calculated. The consumption is compared with a preset fuel consumption threshold value in real time, and if the consumption continuously exceeds the threshold value, a fuel consumption abnormity identifier is generated. Afterwards, energy efficiency grade evaluation is carried out on the fuel oil use efficiency in combination with the real-time navigation state of the ship to obtain an energy efficiency analysis result, and the energy efficiency analysis result is transmitted to a remote monitoring platform through a ship communication channel; according to the invention, the accuracy of ship fuel consumption whole-process online monitoring can be improved.

The invention relates to the technical field of fuel additives, in particular to a fuel additive as well as a preparation method and application thereof. Comprising the following components in parts by weight: 60 to 220 parts of bis-polyether amine, 10 to 20 parts of polyisobutene amine, 5 to 15 parts of polyether polyol, 5 to 30 parts of alkyl amine alcohol, 0.5 to 20 parts of polybasic fatty acid ester, 0.5 to 20 parts of alkyl acid ester, 10 to 30 parts of a catalyst, 2 to 7 parts of an antioxidant, 5 to 10 parts of a corrosion inhibitor and 10 to 50 parts of carrier oil. A small amount of the fuel additive is mixed with gasoline or diesel oil, and through bis-polyether amine and polyisobutene amine, combustion of fuel oil in a combustion chamber of an internal combustion engine is improved, more complete combustion of the gasoline or the diesel oil is promoted, the combustion efficiency of the fuel oil is enhanced, the oil consumption is reduced, and the economical efficiency of the fuel oil is improved; and air pollution caused by emission of hydrocarbon or combustion intermediate products is reduced.

The embodiment of the invention provides a power generation control method of an electric loading system of a mixer truck and the electric loading system. The power generation control method is used for solving the problem that in the prior art, oil consumption is high during power generation driving. The mixer truck comprises a chassis and an electric loading system, the chassis comprises an engine, the electric loading system comprises a generator, a generator controller, a driving motor, a driving motor controller and a battery unit, the battery unit is electrically connected with the generator and the driving motor, and the driving motor is used for driving a stirring device. The method comprises the steps that when it is determined that the mixer truck is in a running working condition, the rotating speed of an engine and the load of the engine are obtained; when the rotating speed of the engine and the load of the engine meet efficient power generation conditions, the generator controller controls the generator to generate power; wherein the efficient power generation condition is that the engine rotating speed is larger than the first set rotating speed and smaller than the second set rotating speed, and the engine load is larger than the first set load and smaller than the second set load.

The invention relates to the field of extended-range hybrid electric vehicle control, and particularly discloses a multi-mode self-adaptive amphibious vehicle extended-range system start-stop control method, which comprises the following steps of: switching to a corresponding working mode according to a driving environment of a vehicle, the range extending system is adaptively adjusted to a power generation working condition or a stop working condition according to different working modes; the range extending system start-stop control module comprises a range extender starting module and a range extender stopping module, and the engine starting module is divided into a starter emergency starting mode and an ISG reverse dragging engine starting mode; task requirements of a driver can be met, operation states of all parts can be coordinated more sufficiently, energy output efficiency is improved, the range extending system is higher in starting and response speed and lower in oil consumption and emission in the starting process, meanwhile, the mode that an engine is started by a starter is reserved to cope with emergency situations, and the range extending system is suitable for popularization and application. And the stability and the reliability of the whole system are improved.

The invention provides a hydrocarbon fuel cell aero-engine, a gas compressor and a fan in the engine are driven by a motor and can also be driven by a turbine shaft, a fuel cell system is located behind a turbine, and a partial oxidation reforming reactor, a combustion chamber, a fuel delivery pump and an exhaust nozzle are sequentially connected. Tail gas of the fuel cell system and gas which does not react completely are used for driving the turbine to rotate, the main shaft is driven to drive the gas compressor and the fan to work, electric energy generated by electrochemical reaction in the fuel cell system can also be used for driving the generator to work, and two working modes of driving the gas compressor and the fan are adopted; the problem of poor economical efficiency caused by the fact that a turbine is used for driving the gas compressor in the high altitude is solved; through the working modes of the dual-drive air compressor and the fan, the engine can be freely switched between the high altitude and the low altitude according to requirements in the using process. The advantages of cleanness and high efficiency of the fuel cell are utilized, and the problem that a traditional aero-engine is high in oil consumption rate is solved.

The invention discloses a vehicle fuel consumption management method, system, device and product. The method comprises the steps of obtaining vehicle dynamic data; abnormal monitoring and alarm processing are carried out on the vehicle dynamic data, and an abnormal alarm event is generated; performing driving behavior analysis processing on the vehicle dynamic data to obtain a driving behavior report; performing dynamic route and speed optimization analysis and vehicle condition and energy consumption correlation optimization analysis processing on the vehicle dynamic data to obtain an optimization suggestion; and carrying out visual display on the abnormal alarm event, the driving behavior report and the optimization suggestion, and receiving an interaction instruction to carry out oil consumption management on a target vehicle. The embodiment of the invention can improve the fuel consumption management of the vehicle, and can be widely applied to the technical field of vehicle management.

The utility model discloses a gearbox for an oil-electricity double-engine ship. The gearbox comprises a box body, the diesel oil input component comprises a first input shaft, a first driving gear is sleeved on the first input shaft, and the first input shaft is provided with a first transmission gear and a first clutch; the reversing shaft part comprises a reversing shaft, a second driving gear is sleeved on the reversing shaft, the reversing shaft is provided with a second transmission gear and a second clutch, and the second transmission gear is meshed with the first transmission gear; the motor input component comprises a second input shaft, the second input shaft is sleeved with a third driving gear in an empty mode, the third driving gear is meshed with a first driven gear, the second driving gear is fixedly sleeved with the first driven gear, and the second input shaft is provided with a third clutch; the output shaft component comprises an output shaft and a second driven gear, and the second driven gear is meshed with the first driving gear and the second driving gear. According to the scheme, the diesel engine or the motor is independently used for driving, intelligent switching of the diesel engine and the motor can be achieved at any speed, oil consumption is reduced, and power performance is improved.

The invention relates to a control method, device and equipment of an electromagnetic clutch and a medium, the two ends of the clutch are used for being connected with an engine and a driving motor respectively, when the clutch is engaged, a corresponding vehicle is in a common driving state of the engine and the driving motor, and when the clutch is disengaged, the corresponding vehicle is in an independent driving state of the driving motor. The control method comprises the steps that whether the vehicle speed meets the clutch connection or disconnection condition or not is judged; if yes, the engine is adjusted to the optimal oil consumption working condition, and the optimal oil consumption working condition corresponds to the area on the universal characteristic curve of the engine; the clutch is engaged or disengaged. According to the scheme, the engine is firstly adjusted to the optimal economic oil consumption working condition, then the clutch is engaged or disengaged, the problems that in the prior art, clutch engagement or disengagement consumes long time and is low in efficiency are solved, and oil consumption is effectively reduced.

The embodiment of the invention discloses a range extender working point selecting and switching method, device and equipment and a medium, and the selecting and switching method comprises the steps that driving demand information and running state information of a vehicle are obtained firstly, then the target power demand of a range extender is determined according to the driving demand information and the running state information, and the target power demand of the range extender is determined according to the target power demand. Then constructing a working performance optimization function of the range extender; wherein the working performance optimization function comprises at least one to-be-optimized parameter of oil consumption, emission and vibration, and finally selecting a target working point of the range extender according to the target power demand and the working performance optimization function. Wherein the target working point corresponds to the target rotating speed and the target torque of the range extender. By means of the method, the working performance requirements of low oil consumption (high oil-electricity conversion efficiency or high system efficiency), low emission, low vibration and the like are met at the same time, so that the optimal working point and working curve of the range extender can be rapidly and accurately matched, and the effect of selecting and optimizing the working point of the range extender is achieved.

The invention discloses a hybrid electric vehicle endurance mileage calculation method and system and a hybrid electric vehicle. The hybrid electric vehicle endurance mileage calculation method comprises the steps that the initial endurance mileage in a pure oil mode when a vehicle is started is obtained; a vehicle driving mode is judged based on the current state of the vehicle, if the vehicle is in a hybrid mode, a mileage correction coefficient is obtained based on the first fuel quantity information and the corresponding driving mileage, and a first mileage reduction value is determined based on the mileage correction coefficient; if the vehicle is in the engine idling working condition mode, a second mileage reduction value in the engine idling working condition mode is obtained based on the second oil mass information and the average oil consumption information; and based on the initial endurance mileage, the first mileage reduction value and the second mileage reduction value, obtaining a residual endurance mileage, and displaying the residual endurance mileage. According to the method, the endurance display mileage value of the hybrid vehicle can be accurately obtained by combining the fuel consumption information under different working conditions.

The invention discloses a range-extending power generation control device and method for a range-extending vehicle, and the method comprises the steps: enabling the vehicle to enter a mute mode when responding to a mute instruction, enabling a range extender to operate at an NVH optimized working condition point through responding to a first torque request and a first rotating speed request, and enabling the range extender to operate at an NVH optimized working condition point; meanwhile, the range extender is controlled to be switched to a sub-mode in a mute mode according to the current electric quantity state of the battery; and when the mute instruction is not responded, the vehicle enters a normal mode, the range extender is made to operate at the minimum oil consumption rate working condition point by responding to the second torque request and the second rotating speed request, and meanwhile the range extender is controlled to be switched to a sub-mode in the normal mode according to the current electric quantity state of the battery. The problems of high noise and poor user experience caused by neglecting the NVH demand in the power generation control of the existing extended-range automobile are solved, and meanwhile, the low oil consumption demand and battery protection are considered.