57results about How to "Reduce power interruption time" patented technology

The invention relates to an electric motor zero torque control bisynchronous shifting method for hybrid vehicles, belonging to the technical field of modern transportation. The method is characterized in that vehicle speed ua and throttle valve alpha are monitored to identify shifting points; throttle percentage is reduced and the electric motor torque is increased; when throttle percentage is less than the given threshold value, a clutch is separated and the electric motor torque is controlled to be zero and original shift is restored; engine speed is adjusted to matched target speed ne, meanwhile zero torque control is performed on the electric motor and a zero torque control map, input voltage Uin and input current Iin corresponding to the given inverter matched target speed nm are inquired and the electric motor speed is controlled to reach the matched target speed nm; when the deviation between the electric motor speed nm and the matched target speed nm of the electric motor is less than the given threshold value, a new shift is moved to; electric motor torque output is restored; when the deviation between the engine speed ne and the matched target speed ne is less than the given threshold value, the clutch is combined; finally, engine torque output is restored. The invention has the effects and benefits of reducing shifting impact, shortening power interruption time and improving shifting comfort.

The invention provides a vehicle working mode switching method and a vehicle working mode switching system of a hybrid electric vehicle. The method comprises the steps of receiving a mode switching control signal and a clutch closing control signal sent by a vehicle controller when the vehicle is required to be switched to a parallel mode from a series mode; sending a mode switching in-progress marking signal to the vehicle controller; controlling an ISG motor to work in a rotation speed control mode, and adjusting the speed of the ISG motor by taking the rotation speed of a drive motor as the target; controlling the ISG motor to work in an idle mode; controlling the clutch to be combined; sending a clutch closed state signal to the vehicle controller. The vehicle working mode switching method and the vehicle working mode switching system of the hybrid electric vehicle have the advantages that the technical problems of long interruption time of power and great wear of the clutch in mode switching caused by a fact that rotation speeds of the ISG motor and the drive motor are synchronized through a sliding membrane of the clutch in mode switching of the existing hybrid electric vehicle are solved, and the active speed adjusting process of the ISG motor and the drive motor is added before the clutch is combined, so that the mode switching time is shortened and the smoothness in the process of mode switching is improved.

The invention discloses a power interruption compensation control method for a hybrid electric vehicle AMT shifting process. The power interruption compensation control method comprises the followingsteps that S1, the engine output torque at any moment t is T<ecu_act>(t), the motor output torque is T<mot_act>(t), the vehicle torque is T<req_car>(t), and T<req_car>(t) = T<ecu_act>(t) + T<mot_act>(t); during t1-t2, a clutch is opened from closed, T<ecu_act>(t) is reduced, T<ecu_act>(t1) = a, T<mot_act>(t1) = b, T<req_car>(t1) = c, T<ecu_act>(t2) = 0, T<mot_act>(t2) = T<req_car>(t2), and a, b and c are engine required torque, motor required torque and vehicle required torque separately when throttle/brake signals remain unchanged; S2, during t2-t3, the clutch remains open and a gear is shifted, and T<mot_act>(t) = T<req_car>(t); and S3, during t3-t4, the clutch is closed from open, T<ecu_act>(t) is increased, T<ecu_act>(t4) = a, T<mot_act>(t4) = b, and T<req_car>(t4) = c. According to the power interruption compensation control method for the hybrid electric vehicle AMT shifting process, the interruption time of power in the vehicle shifting process is eliminated or shortened, and riding comfort of passengers is improved.

The invention discloses a power motor auxiliary gear-shifting control system and a control method thereof. The power motor auxiliary gear-shifting control system comprises a vehicle control unit, a throttle opening sensor, a motor, a transmission, a gear-selecting and gear-shifting execution device and an output shaft speed sensor, wherein the throttle opening sensor is connected with the vehicle control unit to transmit throttle opening information to the vehicle control unit, the motor is connected with the vehicle control unit and reaches a target speed according to the instruction action of the vehicle control unit after the vehicle control unit receives the throttle opening information, the gear-selecting and gear-shifting execution device is respectively connected with the vehicle control unit and the transmission and indicates gear-selecting and gear-shifting action of the transmission according to the instruction of the vehicle control unit, and the output shaft speed sensor is connected with the vehicle control unit to feed back acquired transmission output shaft speed information to the vehicle control unit. According to the power motor auxiliary gear-shifting control system and the control method thereof, gear-shifting quality can be improved, and the service life of the transmission is prolonged.

The invention discloses a gear shifting control method and device for an AMT engine. The gear shifting control method comprises the steps that accelerator opening degree information, current gear information and target gear information of a target vehicle are obtained; according to the accelerator opening degree information, the current gear information and the target gear information, whether the target vehicle is in the downshift process with the power requirement or not is determined; if it is determined that the target vehicle is in the downshift process with the power demand, the initial PID parameter value corresponding to the speed regulation stage in the downshift process with the power demand is adjusted to the target PID parameter value, and the initial smoke intensity limit value corresponding to the torque returning stage in the downshift process with the power demand is adjusted to the target smoke intensity limit value; the response rate of the downshift process with the power requirement is increased; and according to the target PID parameter value and the target smoke intensity limit value, the downshift process of the AMT engine is controlled. According to the scheme, the response rate of the downshift process with the power requirement is increased, and the dynamic property and safety of the target vehicle during heavy-load climbing or rapid overtaking are guaranteed.

The invention provides a control method and device for gear shift of a hybrid power system, and a vehicle-mounted device. Before a synchronizer moves up a gear and a first clutch is closed, an engineand a first motor are controlled to conduct lifting and twisting and sliding friction of the clutch based on a first preset speed. At that time, power can be output, and power-interrupting time can bereduced, and user experience can be improved.

The invention relates to a shift control mechanism of a transmission. The shift control mechanism comprises a first shift lever, a second shift lever, a third shift lever and a fourth shift lever, wherein a first shift fork and a first shift drive fork are matched on the upper portion of the first shift lever, a second shift fork and a second shift drive fork are matched on the lower portion of the second shift lever, the lower portions of the third shift lever and the fourth shift lever are matched with a third shift drive fork respectively, and a third shift fork is matched on the upper portion of the fourth shift lever. The shift control mechanism is characterized in that a shift block is composed of a shift finger and a shift cam, a mounting hole is arranged at the center of the shift cam, a shift shaft is perpendicular to the fourth shift lever and matched with the mounting hole on the shift cam, and the shift finger is positioned between inner sides of the first shift fork, the second shift fork and the third shift fork. The shift control mechanism is simple in structure, and capable of achieving shift interlocking and gear selection before dislocating, reducing shift time, and improving safety and service efficiency of the transmission.

The invention discloses a clutch-free synchronous gear shifting control method and system of a hybrid power system. The method comprises the following steps: S1, obtaining gear shifting requirements,S2, entering shift preparation, S3, when the rotating speeds are different, protecting a synchronous ring, under the action of a gear shifting motor, allowing a gear sleeve to move forwards, wherein when the gear sleeve makes contact with the synchronous ring, due to the fact that the rotating speed w1 of joint teeth is different from the rotating speed w2 of the gear sleeve, the synchronous ringbears friction torque of the joint teeth and shifting ring torque of the gear sleeve, the friction torque is larger than the shifting ring torque, and the gear sleeve cannot drive the synchronous ringto move and cannot penetrate through the synchronous ring to be combined with the joint teeth; S4, performing gear shifting after speed regulation; S5, engaging a new gear, recovering torque output,and S6, executing a new gear shifting cycle. The clutch-free synchronous gear shifting control system of the hybrid power system comprises an execution unit, an automatic transmission controller, a gear shifting motor, the hybrid power system and the synchronous ring, a clutch is prevented from being adopted during gear shifting, the cost is reduced, and the power interruption time is shortened.

The invention discloses a double-gear-shifting motor executing mechanism for a mechanical automatic transmission in the field of vehicle transmission device components. The double-gear-shifting motorexecuting mechanism comprises two independent executing mechanisms which are rotationally connected through gear shifting rotation shafts in the independent executing mechanisms, and the axes of the two gear shifting rotation shafts are collinear. The outer end faces of the gear shifting rotation shafts are connected with angle sensors. The inner and outer half sides of the gear shifting rotationshafts are in rigidity connection with stirring finger bases and gear transmission devices correspondingly. The gear transmission devices are connected with one ends of planet gear speed reducers through straight gears, the other ends of the planet gear speed reducers are connected with coaxial gear shifting motors, and each stirring finger base is externally fixedly connected with a gear shiftingstirring finger. According to the double-gear-shifting motor executing mechanism, the component utilization rate is improved, and the cost is effectively controlled; and double-motor coordinated control is adopted, the power interruption time in the gear shifting process is further shortened, and the gear shifting quality is improved.

The invention relates to a mechanical automatic transmission speed change system. The mechanical automatic transmission speed change system is composed of a box body, an input shaft, an output shaft,a reverse gear shaft, driving toothed wheels of various gears, driven toothed wheels of various gears, a reverse gear intermediate toothed wheel, and a plurality of synchronizers. The box body is divided into a left box body and a right box body, a supporting body is arranged between the left box body and the right box body, and the box body is formed by connecting and assembling the left box body, the right box body and the supporting body through bolts or screws; the input shaft is formed by connecting a first input shaft with a second input shaft through a flexible coupling; a transmissiongear driving toothed wheel is machined on the input shaft or fixedly installed on the input shaft through a spline; the output shaft is formed by connecting a first output shaft and a second output shaft through a flexible coupling; the multiple non-adjacent gear synchronizers are fixedly installed on the output shaft through splines, and the two sides of each non-adjacent gear synchronizer are loosely sleeved with the driven toothed wheels of the corresponding gears through bearings; and the reverse gear shaft is sleeved with the reverse gear intermediate toothed wheel. Through the mechanicalautomatic transmission speed change system, the gear shifting time of a mechanical automatic transmission can be shortened advantageously, and the gear shifting quality is improved.

The present invention proposes a multi-speed hybrid transmission, including an engine, a generator, a drive motor, a planetary gear mechanism, an input shaft, an input shaft of a generator, an output shaft of a drive motor, an output shaft, and a differential. The input shaft is connected with the input shaft, the input shaft is arranged coaxially with the generator input shaft, and is arranged parallel to the output shaft of the driving motor and the output shaft, the end of the input shaft is connected with the planet carrier, and the first, second, and For the third and fourth gears, the fifth, sixth, seventh, eighth, and ninth gears are successively installed on the output shaft, and the tenth gear is installed on the output shaft of the driving motor. 3. The fourth gear meshes with the sixth, seventh, eighth, and ninth gears respectively, the fifth gear meshes with the differential gear, and the tenth gear meshes with the sixth gear. The present invention simplifies transmission system to achieve fast shifting and shorten the power interruption time.