1286results about How to "Improve riding performance" patented technology

The invention discloses a built-in and suspension integrated hub motor drive electric wheel. The electric wheel comprises a hub motor, a brake, a wheel, a damping mechanism and a speed reduction mechanism, wherein the speed reduction mechanism comprises a sun wheel, a planet wheel, a planet carrier and a gear ring; the damping mechanism comprises a first elastic element and a second elastic element; and the hub motor is connected with a vehicle through the first elastic element, and is connected with a supporting shaft of the wheel through the second elastic element. Compared with the prior art, the electric wheel has the advantages that the electric wheel has a compact structure, is light in mass and high in power density and can be easily distributed on the wheel; the dynamic properties and the safety of the vehicle are remarkably improved; and simultaneously, the dynamic characteristics of an electric wheel driving system are effectively improved, the grounding performance of the wheel is improved, and the service life of parts is prolonged.

The invention involving a magnetorheological fluid damping device for automobile suspension system.The magnetic field generator of this damping device consists of permanent magnet and electromagnetic coil.On the top of the damping device,there are guide apparatus and damping regulator,the function of which is that to ensure the damping channel is uniform annular duct and to meet the high-damp requirement in the restoration process and low-damp requirement in the compression process of damper seperately.The current in the electromagnetic coil designs of bi-directional and this controls the magnetic field intersity of the damping channel,decreases the excitation current of the electromagnetic coil,reduces energy consumption and decreases damper fever.On the non-controlling conditions,this damping device has the equivalent characteristics of the traditional shock absorber and can instead the passive shock absorber,after equiping corresponding current controller,this device can regulate the damping characteristics of suspension system,which improves the automobile driving safety and ride comfort.

The invention discloses an automatic speed change mechanism for a dual-motor clutch-free blade electric vehicle. The automatic speed change mechanism comprises a first input shaft, a second input shaft and an output shaft which are arranged in parallel. A first-gear driving gear, a first synchronizer and a third-gear driving gear are arranged on the first input shaft. A second-gear driving gear, a second synchronizer and a fourth-gear driving gear are arranged on the second input shaft. A first-gear driven gear meshed with the first-gear driving gear, a second-gear driven gear meshed with the second-gear driving gear, a third-gear driven gear meshed with the third-gear driving gear and a fourth-gear driven gear meshed with the fourth-gear driving gear are arranged on the output shaft. The automatic speed change mechanism removes a clutch, the structure of the whole mechanism is simplified, and the manufacturing cost is low. By means of dual-motor driving and controlling the synchronizers and driving motors to achieve gear shifting without power failure, the power switching smoothness is good. When any driving motor breaks down, the other driving motor can work continuously to drive the vehicle to run. Thus, the system reliability is high.

The invention discloses a suspension device in front of a vehicle driving cab, relating to the technical field of vehicle shock absorption. The suspension device comprises a transverse stabilizer bar (10) and a first suspension device, wherein the first suspension device is arranged at the end part of the transverse stabilizer bar (10) and comprises an upper bracket (1), a shock absorber (5), an overturning arm (12) and an overturning seat (6). The suspension device in front of the vehicle driving cab is characterized in that the overturning arm (12) is located at one side of the transverse stabilizer bar (10), and the other end of the overturning arm (12) is fixedly connected with one end of the transverse stabilizer bar (10); the upper end of the shock absorber (5) is connected with the upper bracket (1), and the lower end of the shock absorber (5) is connected with the transverse stabilizer bar (10); the bottom of the upper bracket (1) is connected with the overturning arm (12); and the end part of the transverse stabilizer bar (10) is supported by the overturning seat (6). The invention also discloses a heavy vehicle with the suspension device in front of the vehicle driving cab.

The invention discloses a gear-shifting control method of a hybrid electric vehicle. The gear-shifting control method comprises the following steps of detecting operating parameters of the hybrid electric vehicle, judging the working modes of the hybrid electric vehicle, and carrying out speed governing gear-shifting control over a first electric motor generator according to the current working mode of the hybrid electric vehicle and the operating parameters of the hybrid electric vehicle so that the hybrid electric vehicle can achieve gear-shifting control, wherein the operating parameters of the hybrid electric vehicle comprise the speed, the accelerator pedal signals and the current gear of the hybrid electric vehicle, and the working modes comprise the pure electric mode and the hybrid power mode. According to the method, speed governing gear-shifting of motors in various working conditions is taken into consideration, the smoothness and the comfort of the whole vehicle are improved, and the application range is expanded. The invention further discloses a power transmission system and the hybrid electric vehicle.

The invention provides a method and a system for controlling low-speed worming. The method includes that a vehicle control unit (VCU) collects current vehicle state signal and sends the same to a motor control unit (MCU); the MCU determines current working mode by controlling target rotating speed of a motor according to the current vehicle state signal; the VCU controls rotating speed and working mode of the motor by detecting braking pedal signal, acceleration pedal signal, gear position signal and actual motor rotating speed signal fed back by the motor of a vehicle, and the MCU controls the motor to realize control on low-speed worming of the vehicle.

The invention relates to a plug-in hybrid driving device based on a mechanical automatic transmission, which belongs to a power driving device of walking machinery. The device comprises an engine, two motors, a two-gear mechanical automatic transmission, a main speed reducer and a differential mechanism, wherein the two-gear mechanical automatic transmission is composed of a mesh gear pair formed by gears of A, B, C, D, H, I, E and F, synchronizers of T and Q and shafts of M, N and O. Model switch of fuel power source driving, electric power source driving or hybrid source driving can be achieved by controlling the synchronizers of T and Q. The plug-in hybrid driving device has the advantages of being capable of effectively using efficient maneuvering areas of the engine and the motors, various in running models, capable of achieving driving synchronous speed regulation and unpowered interrupt control during gear shift, simple and compact in structure, small in axial size and suitable for front-engine front-driving arrangement form.

The invention relates to virtual prototype and MATLAB control system joint simulation with the aim of improving dynamic performance of vehicles. The technical problems solved by the invention are to provide a modified sky-hook control simulation technology of the four-axle heavy truck suspension system coupling the virtual prototype and MATLAB, and improve the road friendliness and smoothness of vehicles, aiming at the shortcomings of the prior art. The method of the invention is based on the ADAMS / View platform to build a four-axle heavy truck virtual prototype model and all grades of bilateral track multipoint random excitation pavement models; a modified sky-hook control algorithm is provided according to the modern control theory, ADAMS and Matlab / Simulink joint simulation are adoptedto realize the semi-active control and active control of modified sky-hook of suspension system damping. The important innovation of the invention is to realize the ADAMS / MATLAB joint simulation of the four-axle heavy truck suspension system; and the designed and modified sky-hook control algorithm is applicable to the semi-active control and active control of the suspension system, and can effectively improve the road friendliness and smoothness of the four-axle heavy truck and have stronger robustness.

The invention discloses a control device and method for starting of an AMT vehicle on a ramp, which comprises a signal collecting unit, an electronic control unit and an actuating mechanism. The electronic control unit comprises a signal receiving module, a signal analysis and judgment module and a control signal output module, and the actuating mechanism comprises a clutch motor and a throttle motor. The signal collecting unit at least comprises a brake sensor of first level and a brake sensor of second level, the signal analysis and judgment module determines the engaging extent of a clutch and the opening extent of an air control shutter according to the signals collected by the brake sensors of first and second level and received by the signal receiving module, and the control signal output module respectively controls the actions of the clutch motor and the throttle motor according to the engaging extent of the clutch and the opening extent of the air control shutter. The control method for starting of the AMT vehicle on the ramp provided by the invention enables the engaging extent of the clutch and the opening extent of the air control shutter not to be zero when a brake pedal is released, thereby overcoming the starting spark extinction and back sliding of the vehicle caused by factors like friction force, engine torque, etc. during staring of the vehicle on the ramp.

The invention relates to a vehicle pavement identification system and a suspension mode switching method and belongs to the field of automobile safety and comfort. A suspension mainly comprises sprung mass, an elastic element, a damper, a linear motor, unsprung mass, an acceleration sensor A, an acceleration sensor B, a displacement sensor A, a displacement sensor B, a current amplifier, an A / D converter, a signal storage unit, an ECU, a power amplifier and a D / A converter. The ECU (14) comprises a signal processing module, an analysis module, a judgment module and a control module, receives displacement signals and acceleration signals, measured by the vehicle sensors, of the sprung mass and the unsprung mass, grades road conditions by combining the vehicle speed and the damping coefficient and meanwhile controls the suspension by combining vehicle working conditions and switching different modes to meet the requirements of safety and comfort. According to the vehicle pavement identification system and the suspension mode switching method, the linear motor is adopted as an actuator, brake energy of the suspension can be recovered under good road conditions for supplying to other systems for using, and energy feedback performance is achieved.

The invention provides a method for controlling oil filling of clutches of an automatic double-clutch gearbox. The method comprises the step of filling oil in advance, wherein the clutches are filled with the oil in advance after pre-shifting of a target gear is finished, and the preset time is maintained; the step of filling the oil for the second time, wherein the clutches of the target gear are filled with the oil for the second time until linkage point pressure is reached; the step of maintaining the linkage point pressure, wherein the linkage point pressure of the clutches of the target gear is maintained until torque is alternated. In the step of filling the oil in advance, the current oil temperature of the gearbox is measured, and filling the oil in advance is carried out according to the current oil temperature of the gearbox. The temperature change of the oil in the gearbox is utilized for controlling the clutch oil filling process, and therefore timeliness and smoothness of clutch motions in the shifting process can be improved, and the fault rate of the automatic wet type double-clutch gearbox can be lowered.

The invention discloses a precast slab type ballastless track structure. The structure comprises a steel rail (1), fasteners, a precast track slab (2), an adjusting layer (3) and a base (4). The structure is characterized in that: the bottom of the track slab is provided with limiting lug bosses (5) or limiting grooves (6), and the number of the limiting lug bosses (5) or the limiting grooves (6) is single or many. The structure has reasonable stress and good stability and durability, and can fully exert the functions of high strength and high rigidity of the track slab, lighten the longitudinal temperature stress of the track slab and meet the requirements of high smoothness and high stability of rail transit such as railways, light rails, subways and the like.

The invention discloses a power-interrupting-free shifting speed changing box of an electric vehicle and a shifting control method of the power-interrupting-free shifting speed changing box. The speed changing box comprises a first gear pair mechanism, a second gear pair mechanism, a disc clutch and a shifting control mechanism, in the shifting control mechanism, a first gear overrunning clutch and a control overrunning clutch are mounted in corresponding gears, a control friction plate is fixed on a roller retainer and a roller shifting fork of the first gear overrunning clutch, a wave spring is mounted in an annular groove in an end surface of a second control gear, and a control pressure plate is axially pre-tightened through the wave spring, is clamped in the annular groove in the end surface of the second control gear and rotates along with the second control gear. By the shifting control method of the speed changing box, first gear engaging, second gear engaging and gear reversing actions can be realized and do not intervene. By the power-interrupting-free shifting speed changing box of the electric vehicle, the problem of interrupting of shifting power of the traditional AMT is solved, and a smooth speed ratio switching process can be realized. In addition, by the structure, a shifting fork and a shifting fork shaft are further omitted, the system structure is greatly simplified, and the total weight of a transmission is reduced.

The invention discloses an electromobile data acquisition and management system based on a visual instrument. The system is characterized by comprising a vehicle-mounted data acquisition system and an upper computer data management system, wherein the vehicle-mounted data acquisition system comprises a wireless transmission module, a controller area network (CAN) protocol control module, a CAN bus driving module, a high-speed photoelectric coupler, a secure digital (SD) storage module and a global positioning system (GPS) positioning module; the CAN protocol control module is used for acquiring data on a vehicle-mounted CAN bus in real time and packaging the acquired data; the wireless transmission module is used for sending the acquired data to a digital signal processor of the upper computer data management system; and the upper computer data management system comprises a data transceiving module, a data processing module, a driving operating condition automatic generation module and a driving operating condition on-line identification module. By the system, on-line and real-time identification of the driving operation condition of an automobile is realized, reliable reference is provided for real-time adjustment of an electromobile control policy, and the economy, the dynamic property and the smoothness of fuel oil are further improved.

The invention relates to a vehicular road surface irregularity automatic identification system and method. The vehicular road surface irregularity automatic identification system comprises a perpendicular vibration acceleration sensor, a signal processing module, a hardware system module, a power supply module, a BDM module, a CAN receiving and dispatching module and an automotive CAN bus; the perpendicular vibration acceleration sensor which is connected to a hardware system module through the signal processing module performs communication with the automotive CAN bus through the CAN receiving and dispatching module; the BDM module burns the system debugging and software programs on the hardware system module; the power supply module supplies electricity for the hardware system module. The vehicular road surface irregularity automatic identification system and method has the advantages of being capable of collecting road surface signals through the perpendicular vibration acceleration sensor and obtaining road surface irregularity grades after relevant data processing; providing logic judgment bases for control strategies and enabling an automobile to automatically adjust vehicle modes during driving due to appropriate control algorithm routine selection; and being beneficial to improvement of vehicle riding comfort, controllability and comfort performance.

The invention relates to a heavy-load type oil-gas spring independent suspension steering drive axle which comprises a central main reducing gear assembly, an upper cross arm, a lower cross arm, a hub reducing gear assembly, a double-rzeppa type constant velocity universal transmission shaft, a steering joint seat, an oil-gas spring and a steering rod system, wherein the central main reducing gear assembly is located in the center of the steering drive axle and fixedly connected to a frame, and structures of the heavy-load type oil-gas spring independent suspension steering drive axle at the left end and the right end of the central main reducing gear assembly are the same and symmetrically distributed. The steering joint seat is adopted, thus stress in the front, back, left and right directions of the whole steering drive axle trends to be more uniform and reasonable, the steering drive axle has higher traveling smoothness and better maneuverability, and the regulation of ground clearance can be realized at the same time of regulating the height of the frame. The upper cross arm and the lower cross arm of the heavy-load type oil-gas spring independent suspension steering drive axle are respectively of an integral structure, thereby improving the structural rigidity. Both ends of the upper cross arm and the lower cross arm are respectively connected with the steering joint seat and a main reducing gear shell through pin shafts, and the reasonable optimization of swing arm connection points ensures that the changes of wheel tracks and wheel inclination angles are the minimum when wheels jump up and down to the limit, thereby improving the controllabitity and the stability of a chassis.

Provided is a deformable wheel. Spokes can extend or contract in the radial direction, and a cam in a hub controls a hydraulic loop of the spokes. When the spokes rotate to be close to the vertical line of the surface of a vehicle frame by a certain angle, the hydraulic loop of the spokes is closed by the cam, and the spokes can bear weights; when the spokes rotate away from the vertical line of the surface of the vehicle frame by a certain angle, the hydraulic loop of the spokes is opened by the cam. The shape of the wheel changes along with the change of the shape of pavement, and therefore the wheel can cross over various barriers. Due to the fact that the angle of the cam can be adjusted, the height of the axis can be adjusted, and a vehicle body can be kept stable on an inclined pavement or a curve. Due to the fact that the pressure of liquid in the hub can be adjusted, proper pre-pressure can be adjusted and applied to a flexible pavement, and a vehicle with the wheels can run quickly and accurately on various rugged pavements.

The invention relates to a full-hydraulic electric fork lifter, which comprises lifter body, double oil tank, motor variable displacement pump connected with motor, multiway valve, steering device, inclined lifting device and walking-driving device. It is characterized by that the said motor is single one, and said multiway valve comprise incline valve, lifting valve, walking valve and control valve, said four valves are connected into one body by a connecting component, said multiway valve is equipped with a main oil hole communicated with the said four valves and two brach oil holes, and between said two branch oil holes and variable displacement pump a precedence valve is set to implement single motor driving, hydraulic speed regulation.

The invention provides a continuously variable transmission system achieving multi-mode switching of hybrid power. The continuously variable transmission system comprises an input component, an outputcomponent, a clutch assembly, a brake, a hydraulic transmission assembly and a planetary gear assembly. The input component is connected with the hydraulic transmission assembly. The output componentis connected with the planetary gear assembly. The clutch assembly connects the input component and the hydraulic transmission assembly to the planetary gear assembly. The brake and the clutch assembly provides the transmission ratio of continuous advancing or retreating between the input component and the output component. Through linear increase or non-linear increase of the displacement ratioof the hydraulic transmission assembly, hydraulic-mechanical transmission is converted into mechanical transmission. Integrated control can be carried out through a dual power source adopting an engine and an electromotor as power and the transmission and composite transmission adopting hydraulic transmission, mechanical transmission and hydraulic-mechanical transmission as the transmission manner, the statistical method based on test data is used, and matched energy management strategies are provided.

The invention discloses a coordination control method and system for gear switching and work pattern switching and a vehicle. The method comprises the steps that whether a hybrid electric vehicle sends out a gear switching request and a work pattern switching request is judged; if the gear switching request and the work pattern switching request are sent out simultaneously, the current gear is switched to a target gear according to the gear switching request, and the rotating speed of an engine is regulated at the same time; after the target gear is switched to, the current rotating speed of a driving motor and the current rotating speed of the engine are compared; if the difference between the current rotating speed of the driving motor and the current rotating speed of the engine is smaller than a preset threshold, regulation of the rotating speed of the engine is stopped, and a clutch between the driving motor and the engine is controlled to be in a combined state. According to the method, the service life of the clutch can be prolonged, noise can be lowered, and the economical efficiency, dynamic property and smoothness of the whole vehicle can be improved.

A method and equipment for remotely monitoring the information about the numbers of passengers of public traffic via network features that a waiting room detector is used for obtaining the number of the waiting passengers, a bus detector is used for obtaining the number of the passengers getting on a bus and getting off a bus for each bus, and a remote device for receiving all said information via entwork in order to schedule the public traffic and providing said information to the waiting passengers.

The invention relates to a motor torque zero-crossing control method for an electric automobile and belongs to the technical field of electric automobiles. According to the motor torque zero-crossing control method for the electric automobile, a zero-crossing keeping control strategy is conducted on motor torque through a preset demand torque zero-crossing interval [X, -X], instant rotating speed fluctuation at the time of switching of positive torque and negative torque of a motor can be effectively weakened, automobile smoothness is improved, and reducing of motor abrasion is facilitated.

The invention provides an AHC height control system and a vehicle. The AHC height control system comprises a pressure sensor, a height sensor, a vehicle door state detector, a mode selector, a single-chip microcomputer, an air spring, an air storage stank, an air compressor, an exhaust valve, a display screen and a solenoid valve, wherein the pressure sensor, the height sensor, the vehicle door state detector, the mode selector, the air compressor, the exhaust valve, the display screen and the solenoid valve are respectively in communicating connection with the single-chip microcomputer. According to the AHC height control system and the vehicle, signals sent by all the sensors of a vehicle body are received to control a pump machine of the air compressor, the exhaust valve and the solenoid valve, and therefore the air pressure in the air spring is adjusted, and the aim of keeping the height of the vehicle body unchanged is achieved. When the load capacity of the vehicle is increased or lowered, the system can inflate or deflate the air spring so that the height of the vehicle body can be at the optimal position all the time, and the ride comfort of the vehicle is improved.

The invention discloses a control method for the damping value of an electronic-control air suspension fork three-grade adjustable absorber, wherein, according to the simulation analysis of the ride comfort, the suspension fork dynamic deflection and the dynamic load are used as the limit condition, the genetic-algorithm optimization program is compiled, and then the influences of the sprung mass, vehicle speed, and road surface on the damping value optimization are respectively analyzed, so that the sprung mass and the vehicle speed are determined as the main factors for influencing the damping value optimization; according to the real run condition of the vehicle, the change of the sprung mass is divided into three sections: no-load to half-load, half-load to 3 / 4 full-load, and 3 / 4 full-load to full-load; during the sprung mass change of each section, the different mass and the different vehicle-speed as the influence factors are taken into the consideration; the damping value of each grade is pre-optimized by the genetic algorithm and then the damping value is memorized in the ROM of a suspension fork control system ECU; ECU makes use of the signals sent by a sensor to judge the real-time run condition so as to control the executing mechanism to make a response to select the corresponding damping value.

The invention discloses a straddle type monorail transportation rigid framework system, and relates to track beams and piers in a straddle type monorail transportation system. In order to increase smooth of lines, reduce the number of monorail transportation track beam expansion joints, eliminate cast steel tension supports, reduce abrasion to rubber wheels and construction cost, and prolong service life of vehicles, the straddle type monorail transportation rigid framework system is designed. The straddle type monorail transportation rigid framework system is composed in a multi-connected rigid frame bridge mode, a rigid frame bridge is formed by connecting concrete track beams which are prefabricated by a workshop on pier bent cap top surfaces through wet joints in a simple support into continuous method, the track beams are prefabricated by the workshop, adjacent two-connected rigid frame bridges are connected through seamless expansion joints or joint plates or plate type rubber expansion joints, and seamlessness of the straddle type monorail transportation lines is achieved.

The invention provides a vehicle parking control method based on an EPB system, which is characterized by comprising a vehicle parking process and a vehicle unparking process, wherein the vehicle unparking process is an inverse process of the vehicle parking request process, and comprises the following steps: the driver unparks the vehicle through the EPB switch and the driver unparks the vehiclethrough the P-gear switch of the electronic gear shifter; In the method, the driver pedals on the brake pedal and the accelerator pedal are fully considered in the parking request process of the vehicle, and before the parking is executed, the engine torque limiting process is increased until the predetermined torque value is reached, and then the parking is carried out to realize a smooth transition, and the brake pedal and the accelerator pedal are pedaled. When parking failure or EPB system failure occurs in the process of vehicle parking request, the driver is prompted to start emergency parking to ensure parking safety; Emergency parking is that the driver controls the parking locking mechanism in the gearbox by pulling the cable, which is commonly called small handbrake. It is easy to operate and the cost is very low.

A commercial vehicle single front axle structure with independent suspensions comprises the left independent suspension and the right independent suspension which are arranged symmetrically. The left independent suspension is connected with the right independent suspension through a vehicle frame. The vehicle frame comprises a left longitudinal beam and a right longitudinal beam which are symmetrically arranged. The left longitudinal beam is fixedly connected with the right longitudinal beam through a front pocket beam and a rear pocket beam. The independent suspensions are connected with the front pocket beam and the rear pocket beam through connection brackets and four plate springs correspondingly. The bottoms of the connection brackets are connected with the longitudinal beams through shock absorbers. A gear rack steering system is connected with steering knuckles. The commercial vehicle single front axle structure is reasonable, high in mechanical strength, good in bearing characteristic and conductive to improving the smoothness and operation stability of a whole vehicle.