61results about How to "Satisfy the motivation" patented technology

The invention discloses a drive control method for an all-electric car. The drive control method aim at solving the problems that division of working modes during a finished automobile driving running is not considered, a torque compensation function is not considered in the running process of other vehicles except flooring of an accelerator pedal, and united efficiency of a power component is not considered in goal torque setting. The drive control method for the all-electric car comprises the steps of utilizing a finished automobile controller to automatically identify a finished automobile working mode according to current finished automobile acceleration mean values and an acceleration mean square errors, and enabling the finished automobile working mode to be one of a common mode, a power mode and an economic mode; working out an expected torque Treq under the corresponding mode according to a goal working mode control strategy in the finished automobile controller after the working mode identification is finished; restraining and correcting the expected torque Treq according to a power limiting value strategy in the finished automobile controller after the expected torque Treq under the goal working mode is obtained, and if a finished automobile has no major failure at the time, outputting ultimate goal torque commands to a motor.

The invention relates to a driving system for an electric vehicle. A clutch pedal is eliminated, and only an accelerator pedal and a brake pedal are kept; a clutch control unit controls a clutch driving motor to disengage a clutch under the condition that gear shifting is needed; the clutch driving motor is a linear motor (or a rotary motor and a cam mechanism), and a complicated speed-reducing torque-increasing device and a transmission mechanism in the conventional clutch operating mechanism are not needed; an automatic transmission control unit sends an instruction according to a vehicle automatic gear shifting rule, and a gear selecting and shifting motor drives a gear selecting and shifting execution mechanism to finish a gear shifting action; the clutch control unit controls the clutch driving motor to move in an opposite direction, so that the clutch is engaged, the power of a vehicle driving motor is transferred through a gearbox, and an automatic speed change function is realized; and the vehicle driving motor is only simply controlled in the process, so that the requirement on the manufacturing technology of the driving motor is reduced.

The invention discloses a CVT (continuously variable transmission) hybrid electric vehicle power source torque optimizing distribution method which comprises the steps of (1) building a whole vehicle transmission system dynamics equation which is related to an accelerator pedal opening value by taking the accelerator pedal opening value, accelerator pedal speed and power supply SOC (state of charge) as optimizing state variables and taking a required torque value as basic; (2) taking engine power as required input power of a whole vehicle, and setting power consumed for overcoming traveling resistance of the vehicle and storage battery power as output power of a system, and combining the whole vehicle transmission system dynamics equation in step (1) so as to obtain final required output power of the system; and (3) defining system efficiency according to the ratio of the required output power and the required input power, taking the highest system efficiency as an optimizing target, and optimizing to obtain power source target torque. The method of the invention can improve the whole vehicle working efficiency, solves a torque distribution problem at a driving working state, and can be widely applied to the field of hybrid electric vehicles.

The invention provides a method for controlling the torsion of a stepless variable-speed moderate hybrid vehicle, which comprises the following steps that: an engine management system ECU calculates the torsion required by an integral vehicle according to the displacement amount of an accelerator pedal of a driver, after the torsion required by the integral vehicle is calculated, the engine management system ECU sends the torsion required by the integral vehicle to an integral vehicle controller HCU, and the integral vehicle controller HCU distributes motor torsion and engine torsion according to the condition of the current electric quantity of a battery and the running condition of an engine. Through the method, the dynamic property of the integral vehicle can be met, and the working condition of the engine is optimized by combining with the operating characteristic of CVT, so that the integral vehicle has economic consumption of fuel oil and less pollution emission, and achieves the effects of energy conservation and emission reduction.

The invention relates to an electric-driving transmission device for an electric vehicle and a control method. The electric-driving transmission device comprises a driving motor, a differential mechanism, a first brake, a second brake, a first planetary gear set and a second planetary gear set, wherein the first planetary gear set comprises a first sun wheel, a first planet carrier and a first gear ring, and the second planetary gear set comprises a second sun wheel, a second planet carrier and a second gear ring. An output shaft of a driving motor is sequentially connected with the first sunwheel and the second sun wheel. The first gear ring is connected with the first brake, and the second gear ring is connected with the second brake. The first planet carrier and the second gear ring are connected to form a whole, the second planet carrier is provided with an output support, and the output support is connected with an input shaft of the differential mechanism. Compared with the prior art, the electric-driving transmission device can achieve non power failure in the gear shifting process, is low in control complexity, has relatively low requirements for performance of the drivingmotor, and is high in practicability, compact in structure, small in size, low in weight and low in manufacturing cost.

The invention discloses a method for controlling a range extender of an extended-range electric vehicle. The method includes: (1) when an electrical charge state, of a power storage battery pack, collected by a vehicle control unit is higher than the highest threshold value, the whole extended-range electric vehicle is controlled to enter a pure electric operation mode to end a procedure by the vehicle control unit, or the step (2) is executed; (2) when the electric charge state is lower than the highest threshold value, a driver is allowed to manually turn on the range extender via an indicator lamp button; (3) when the electric charge state is lower than the lowest threshold value and the range extender is not turned on manually, the range extender is controlled to start automatically; (4) when the electric charge state is higher than the lowest threshold value, the driver is allowed to turn on or turn off the range extender manually via the indicator lamp button; but after the electric charge state is lower than the lowest threshold value, the driver is not allowed to turn off the range extender via the indicator lamp button, at this time, the ranger extender works at the point with maximum power, and the whole extended-range electric vehicle is in a power-limited state. The method for controlling the range extender of the extended-range electric vehicle is capable of meeting requirements on dynamic property and economy of the whole extended-range electric vehicle.

The invention discloses a CVT speed ratio optimization and energy management method for a plug-in four-wheel drive hybrid vehicle with a CVT. The CVT speed ratio optimization and energy management method comprises the steps of firstly dividing operation modes into a rear-wheel drive motor driving mode, a double-motor driving mode, a pure engine driving mode, a hybrid mode, a driving-charging modeand a braking mode, then taking the maximization of the total efficiency of a front-axle power transmission system as the optimization objective, utilizing an instantaneous optimization method to separately optimize CVT speed ratios in the double-motor driving mode, the pure engine driving mode, the hybrid mode and the driving-charging mode so as to obtain CVT target speed ratio MAP graphs of thecorresponding four operation modes, finally determining the operation mode of the whole vehicle according to the vehicle speed, required torque of the vehicle and a battery SoC value, and determiningthe torque of an engine, a rear-wheel drive motor and an ISG motor and a target speed ratio of the CVT according to the operation mode. The CVT speed ratio optimization and energy management method for the plug-in four-wheel drive hybrid vehicle with the CVT improves the efficiency of a CVT plug-in four-wheel drive hybrid power transmission system and reduces the fuel consumption and emissions ofthe whole vehicle.

The invention relates to a power assembly for a miniature pure electric vehicle; wherein, a first transmission shaft is connected with an output shaft of a motor by an automatic clutch; a first gear of a first shaft and a second gear of the first shaft are fixedly sheathed on the first transmission shaft; a first gear of a second shaft and a second gear of the second shaft are hollowly sheathed with on a second transmission shaft; a variable synchronous joint sleeve is arranged between the first gear of the second shaft and the second gear of the second shaft; the variable synchronous joint sleeve is connected with the second transmission shaft by a spline and can move axially on the second transmission shaft; the second transmission shaft is also fixedly sheathed with a decelerating active gear which is often meshed with a decelerating driven gear on the second transmission shaft. The power assembly takes the motor as power, adopts self-adaptive control of the motor, an automatic clutch and a speed change mechanism, so that the whole power assembly is simple and compact in structure, easy in assembly, light in weight, low in cost and comfortable in operation, not only fundamentally solves the problem of environmental pollution but also effectively reduces the producing cost of the electric vehicle.

The invention discloses an electric vehicle powertrain parameter matching method, a control device and equipment. The matching method comprises the following steps: obtaining a value range of at leastone design parameter of a motor; Determine the value of each design parameter which can meet the vehicle dynamic calibration requirements within the range of the target parameters; Determining the motor type when each design parameter adopts the corresponding target parameter value; According to the contour map of motor efficiency corresponding to the motor type, the calculation efficiency of themotor is determined when each design parameter adopts the corresponding target parameter value respectively. According to the relationship between the design parameters corresponding to the motor type and the motor weight, determining the motor weight in which each design parameter adopts the corresponding target parameter value; According to the calculation efficiency and the weight of the motor, the optimal design parameters of the motor which meet the requirements of the vehicle operation economy are determined. It solves the problem that the whole vehicle dynamic performance and economy simulation can not be carried out when the powertrain parameters are matched.

The invention discloses a fuel cell control method of a hydrogen fuel cell vehicle, and belongs to the field of pure electric vehicles. The fuel cell control method of a hydrogen fuel cell vehicle comprises the following steps: 1) in a hybrid mode, acquiring a vehicle state; 2) judging whether the change frequency of a vehicle demand power is smaller than a preset value or not according to the obtained vehicle state; 3) determining a control mode of the fuel cell according to a judgment result; if the vehicle demand power change frequency is smaller than the preset value, enabling the fuel cell to enter a two-parameter control mode; otherwise, enabling the fuel cell to enter a single-parameter power cell SOC control mode. According to the control method, on the premise that vehicle power is met, it can be guaranteed that output of the fuel cell is stable as much as possible, and therefore the service life of the fuel cell is prolonged.

The invention relates to a lead-acid battery and a manufacturing method of a negative plate thereof. The lead-acid battery comprises the negative plate, wherein the negative plate is composed of a negative plate grid and an active material layer arranged on the negative plate grid through solidifying; the active material layer is characterized in that a char paste and lead paste are uniformly mixed together so as to prepare negative wet paste, and the negative wet paste is coated on the negative plate grid, and solidified and dried to obtain finally the active material layer; the negative wet paste is prepared as follows: mixing a certain amount of char paste and the lead paste, adding a dilute sulfuric acid solution and the lead-acid battery, mixing into a sizing agent through water, adding the lead-acid battery, and adding the water for adjusting the viscosity. The lead-acid battery and the manufacturing method of a negative plate of the lead-acid battery provided by the invention have the advantages that the lead-acid battery is provided with a dual-function negative plate, the high power and rapid charge-discharge of the lead-acid battery are realized, impact on a lead electrode from a large current is avoided, the sulfation of a negative pole is avoided, and the service life of a storage battery is prolonged; and the performance index of the lead-acid battery is higher than that of the existing storage battery, and the manufacturing process, materials and operation environment-friendly property integrated quality are good.

The invention provides a planetary cone-ring transmission, which is characterized by in-line arrangement of a three-gear single-row planetary gear transmission device and a cone-ring continuous variable transmission device and is provided with two forward gears and a reverse gear. When a vehicle runs at low speed and requires higher driving performance, a forward low speed gear of the three-gear single-row planetary gear transmission device is matched with the cone-ring continuous variable transmission device for use; when the vehicle runs at high speed and requires higher traveling performance, a forward high speed gear of the three-gear single-row planetary gear transmission device is matched with the cone-ring continuous variable transmission device for use; when the vehicle is backed, the reverse gear of the three-gear single-row planetary gear transmission device is matched with the cone-ring continuous variable transmission device for use. Therefore, the transmission can meet the requirement of the vehicle better.

The invention discloses a car driver type recognition method which comprises the following steps: 1, signal acquisition and processing: through a CAN equipment driving module and a CAN information processing module, a TCU processes data frames between the TCU and an ECU as well as those between the TCU and an ABS, so as to acquire real-time engine speed, accelerator, footbrake and car speed signals; 2, through an accelerator differential signal calculation module, the TCU averages the accelerator signals, so as to acquire an accelerator average signal; 3, through a drive type recognition fuzzycontrol system module, the TCU calculates a driver factor according to the real-time engine speed, accelerator, footbrake, key switch, handle position and car speed signals; 4, driver factor normalization processing: through a driver factor normalization module, the TCU processes the driver factor through normalization; and 5, through a driver factor filtration module, the TCU processes the normalized driver factor through filtration. By adoption of the car driver type recognition method disclosed by the invention, a driver type can be automatically recognized, and then the optimal gear for car driving can be adjusted.

The invention discloses an ECMS hybrid electric vehicle energy management strategy based on grey wolf optimization, and belongs to the field of fuel cell hybrid electric vehicle energy management, and the strategy comprises the steps: building a whole vehicle dynamic model according to the parameters of a vehicle and the characteristics of an FCHEV; building a fuel cell hybrid power energy management model based on an ECMS strategy; and based on the target of improving the vehicle economy, aiming at the problem of equivalent factor optimization in an ECMS strategy, adopting a grey wolf optimization algorithm (GWO) to adjust an ECMS equivalent factor. By the adoption of the technical scheme, reasonable power distribution between fuel cells can be achieved, and on the premise that the power performance is met, the maximum economical efficiency and the stable driving performance are obtained.

The invention relates to an electronic throttle control system for a formula student racecar. The electronic throttle control system for the formula student racecar comprises a controller. The first signal input end of the controller is connected with the signal output end of an accelerator pedal module, the second signal input end of the controller is connected with the output end of a braking oil pressure sensor, the third signal input end of the controller is connected with the signal output end of a fault detection unit, the signal output end of the controller is connected with the signal input end of an electronic throttle body through a motor driving circuit, and the electronic throttle body outputs feedback signals to the fourth signal input end of the controller. The electronic throttle control system for the formula student racecar is simple in structure and high in reliability, has the functions of throttle position sensor fault detection, pedal position sensor fault detection and braking failure protection and preventing dangerous behaviors caused by misoperation of a racecar driver, can achieve accurate control in the control process, and guarantees the steering stability and the driving safety of the racecar.

Provided is a double-cone ring type continuously variable transmission. A pair of parallel shafts mutually has cones inverted, a ring is internally tangent to the two cones at the same time and pressed tightly to the cones through pressing devices inside the cones, and power is transmitted through friction force between the ring and the cones. Through a speed regulation device, the ring is changes its position on the cones, so that changes of different speed ratios can be realized. Since changes in position of the ring on the cones are continuous, continuously variable transmission can change speed continuously. A planetary row structure speed change device provided with two forward gears and one reverse gear is in array configuration with the double-cone ring type continuously variable transmission. The double-cone ring type continuously variable transmission has the advantages that the continuously variable transmission is simple in structure, capable of continuously varying in speed and wide in transferrable torque range. The requirements on vehicle dynamic performance and economical efficiency can be met, and the requirements that the speed change device is small in size, light in weight and wide in speed change ratio coverage range can also be met.

The invention discloses a dynamic coupling pure-electric drive axle and a control method thereof. The drive axle mainly comprises a central motor, two hub motors, two planet mechanisms, five brakes and four dead axle gear pairs. A sun gear and a gear ring of three elements of each planet mechanism serve as two input ends or one element serves as an input end, and a planet carrier of each planet mechanism serves as an output end. The central motor is connected with the sun gears of the planet mechanisms on the corresponding sides through two corresponding dead axle gear pairs, the two hub motors are connected with the gear rings of the planet mechanisms on the corresponding sides, the planet carriers on the two sides are connected with rims on the corresponding sides through transmission shafts to serve as output ends, power is finally transmitted to the rims through the planet carriers, and a vehicle is driven to run. By the adoption of the structural scheme, different working modes can be achieved according to the actual road condition requirements, the high requirement of the vehicle for the dynamic property can be met, a power source works in an efficient area, and the economical efficiency of the vehicle is improved. Meanwhile, the unsprung mass of the vehicle is reduced, and the riding comfort and control stability of the vehicle are improved.

The invention discloses a nonlinear model predictive control method for a single pedal of a pure electric vehicle. The nonlinear model predictive control method comprises the following steps: 1, acquiring the opening degree of the pedal; 2, establishing a single-pedal dynamics model by using the pedal opening and the pedal rotation angular velocity; 3, designing a sliding-mode observer to obtain a pedal torque acting on a pedal by a driver; 4, performing driving/braking driving mode recognition according to the pedal torque; 5, establishing a single-pedal control system model in combination with the whole vehicle state; and 6, constructing a nonlinear model predictive controller, and obtaining an optimal motor driving/braking torque by using a direct mapping relation between a pedal torque and a motor torque and by taking optimization of energy consumption, comfort and safety as targets so as to realize motor torque control. The integration degree of the driving function and the motor braking function in the single pedal mode is deepened, and the single pedal in the true sense is achieved. Meanwhile, the method can meet the dynamic property requirement of a driver, the driving safety and the energy utilization rate are improved, and the riding comfort is improved.

The invention provides an engine control method and device based on artificial intelligence. The engine control method comprises the steps of obtaining information of an engine, wherein the information of the engine comprises information collected by each sensor and control information of each control switch; judging the current work condition according to the information of the engine; obtainingsensor information, stored in a self-learning database, under the current work condition; calculating the control instruction under the current work condition according to the sensor information, stored in the self-learning database, under the current work condition; sending the control instruction to a corresponding actuator so as to control operation of the engine; wherein the self-learning database is obtained by deep learning and training based on the sensor information under various work conditions and corresponding control instructions, and the control instructions are obtained by calculating based on the sensor information. By the adoption of the engine control method and device based on artificial intelligence, under the condition of meeting emission requirements and power requirements, the engine can keep the best work state under various work conditions.

The invention discloses an in-cylinder direct injection pressurized gasoline engine combustion system. The in-cylinder direct injection pressurized gasoline engine combustion system is characterized in that the in-cylinder direct injection pressurized gasoline engine combustion system comprises a gas inlet channel and a gas outlet channel which communicate with a combustion chamber, inlet valves are arranged in the gas inlet channel, outlet valves are arranged in the gas outlet channel, and a gas inlet shielding outer edge is arranged at the bottom of the gas inlet channel. The in-cylinder direct injection pressurized gasoline engine combustion system is simple in structure, the high compression ratio is provided, and the tumble intensity is improved, so that the design requirements for power performance and emission performance of an engine are met, and the in-cylinder direct injection pressurized gasoline engine combustion system has good application prospects.

The invention provides a water pump with a cooling function. The water pump comprises a vertical pump body and a permanent magnet motor; an impeller is arranged inside the vertical pump body; an output shaft of the permanent magnet motor is of a lengthened shaft extension structure and comprises a shaft portion, an impeller installation portion and an impeller nut installation portion which are sequentially and integrally connected; the output shaft extends into the pump body; the impeller is fixedly arranged on the impeller installation portion. The water pump further comprises a heat dissipation structure comprising a cooling jacket arranged on a shell body of the permanent magnet motor in a sleeving mode; an S-shaped cooling pipe is arranged inside the cooling jacket and filled with cooling liquid; the cooling jacket is provided with a liquid inlet and a liquid outlet corresponding to the two ends of the S-shaped cooling pipe; the two ends of the S-shaped cooling pipe are provided with a liquid inlet valve and a liquid outlet valve respectively; the liquid inlet valve penetrates out of the liquid inlet; the liquid outlet valve penetrates out of the liquid outlet. The water pump is compact in overall structure, good in heat dissipation effect and capable of greatly reducing the production cost and lowering noise.

The invention provides a gearbox and a vehicle provided with the same. The gearbox comprises a middle shaft assembly. The middle shaft assembly comprises a middle shaft and an intermediate speed transmission gear assembly arranged on the middle shaft in a sleeving manner. The middle shaft comprises a one-gear tooth and a reversing gear tooth. The intermediate speed transmission gear assembly is located between the one-gear tooth and the reversing gear tooth. A tool withdrawal groove is formed in one side of the reversing gear tooth. A part of the intermediate speed transmission gear assembly is arranged on the tool withdrawal groove. In the scheme, due to the fact that the intermediate speed transmission gear assembly does not need to avoid the tool withdrawal groove, the tool withdrawal groove is buried in the intermediate speed transmission gear assembly, thus the axial length of a shaft body is reduced, rigidity of the middle shaft is improved, the axial structure is more compact, under the circumstance of increasing gears of the gearbox, the size of the gearbox is basically the same as the axial installing size of a gearbox in the related technology, and thus the gearbox with the gears increased can fit multiple vehicles beneficially.

The invention discloses an air inlet valve capable of producing inlet air swirls and provided with a spiral groove, and an internal combustion engine, and belongs to the field of valve timing mechanisms and air inlet systems of internal combustion engines. The air inlet valve comprises a valve rod and a valve collar. A plurality of arc-shaped flow guide plates capable of enabling inlet air flow to form swirls are arranged on the back surface of the valve collar, and the bending directions of the flow guide plates are the same. According to the air inlet valve capable of producing the inlet air swirls and provided with the spiral groove, the spiral groove is formed between the flow guide plates and the valve collar, strong inlet air swirls can be produced when the air inlet valve is in a small lift mode, and the air inlet resistance is small when the air inlet valve is in a large lift mode, and the air inlet valve is particularly suitable for improving the fuel evaporation, blending and combustion performance of a gasoline engine with a low-medium load.