60results about How to "Uninterrupted power" patented technology

A power supply unit that provides uninterrupted power to an aircraft power bus during switchovers of the aircraft bus from one power source to another. The power supply unit includes circuitry to distinguish between loss of bus power due to switchovers between power sources and loss of bus power due to shutdown of the aircraft. The power supply unit includes a low voltage lockout circuit to interrupt the supply of power when the aircraft bus voltage falls below a minimum value.

The invention relates to a planetary gear mechanism which comprises an input sun gear assembly (1), at least one planet wheel assembly (2), a planetary carrier assembly (4) and an output sun gear assembly (4), wherein the input sun gear assembly, the planetary carrier assembly and the output sun gear assembly are provided with coincident axes of rotation, and every two of the input sun gear assembly, the planetary carrier assembly and the output sun gear assembly can rotate relative to each other; the planetary carrier assembly and / or the output sun gear assembly can be fixed and can be selectively fixed, moreover every two of the input sun gear assembly, the planetary carrier assembly and the output sun gear assembly can be fixed mutually, wherein the locking and fixing can be carried out selectively; the planet wheel assembly can be rotatably installed on the planetary carrier assembly surrounding the axis; and each planet wheel assembly comprises two planet wheel (21, 22) which are connected together through a shaft to rotate coaxially and synchronously, and one of the two planet wheel is meshed with the input sun gear, while the other planet wheel is meshed with the output sun gear. The invention also relates to a speed changer comprising the planetary gear mechanism.

The invention discloses on-board wireless local area network equipment, which comprises an interface module, a main control module and a power supply module, wherein the interface module is used for connecting on-board diagnostics (OBD) of a vehicle; the main control module is connected with the interface module; and the power supply module is connected with the interface module and the main control module, and used for acquiring a power supply from the OBD and providing power for the on-board wireless local area network equipment. The main control module comprises a first Wi-Fi module and a second Wi-Fi module, wherein the first Wi-Fi module is used for establishing a wireless local area network; and the second Wi-Fi module is used for being connected to an external wireless local area network. The technical scheme provided by the invention can realize a Wi-Fi function by using vehicle resources.

The invention discloses a two-gear transmission for an electric vehicle. The two-gear transmission is applicable to front-engine front-drive or rear-engine rear-drive vehicles, is positioned at the output end of a driving motor, and is of a three-shaft structure. The two-gear transmission comprises an input shaft assembly, an intermediate shaft assembly, an output assembly and a case assembly, wherein rotation central lines of the input shaft assembly, the intermediate shaft assembly and the output assembly are parallel; the input shaft assembly, the intermediate shaft assembly and the output assembly are mounted and supported on the case assembly. According to the two-gear transmission, the transmission efficiency is high, the structure is simple, the transmission ratio is liable to match, and the production and manufacturing cost is relatively low; the transmission torque is large, gear shifting control is accurate, reliability is high, and performance requirements that power is not interrupted during the gear shifting process, the time of the gear shifting process is short, and the gear shifting process is smooth can be met; the lighter driving motor can be adopted, and the cost of the driving motor is reduced; and the driving motor and a transmission system are integratedly designed, so that the comprehensive cost of an electric driving system is greatly reduced, and the loading compatibility on different vehicles is higher.

The invention relates to the technical field of electric automobiles, in particular to a dual-motor power system used for speed changing. The system comprises a first driving motor and a second driving motor. The first driving motor and the second driving motor are connected with a first speed changer and a second speed changer respectively, the first speed changer and the second speed changer are connected with a first clutch and a second clutch respectively, and the first clutch and the second clutch are connected with a differential mechanism. The first driving motor, the second driving motor, the first speed changer, the second speed changer, the first clutch and the second clutch are controlled by a controller. Power interruption in gear shifting can be prevented, and a comfortable feeling is provided for a driver and passengers. The invention further provides an electric automobile and a gear shifting method. Power interruption in gear shifting can be prevented.

The invention relates to a double-clutch automatic transmission device which structurally comprises internal and external input shafts (10, 20) which are coaxially arranged, an auxiliary shaft (30) and a reverse gear shaft (40) which are parallel to the two input shafts, a double-clutch assembly (70), a differential assembly (50), multiple groups of normally engaged gear trains arranged on all the shafts as well as multiple groups of synchronizer devices (62, 64, 66 and 68) which are used for realizing selection of all gears. The double-clutch automatic transmission device can provide eight forward gears at most and a reverse gear, so that the transmission device has more excellent comfort performance and lower oil consumption. As two groups of optional reduction gear trains are adopted, each gear train can realize two different gears, so that one auxiliary shaft and assemblies thereof can be reduced, and the transmission cost is reduced. The double-clutch automatic transmission device has the characteristics of simple structure, large quantity of gears, low cost and the like.

The invention relates to a permanent magnet torque converter. The permanent magnet torque converter is characterized in that a coupling transmission work condition and a slip transmission work condition are achieved by permanent magnetic field force; torque can be changed in the slip transmission work condition; and the permanent magnet torque converter is suitable for various traditional vehicles, railway vehicles, new energy vehicles, electric bicycles, motorcycles, industrial and mineral machinery, ships, aircrafts and the like as a transmission component, and is especially suitable for the new energy vehicles, the traditional vehicles and the railway vehicles. The permanent magnet torque converter is characterized by structurally comprising a complicated magnetic disk, a simple magnetic disk, a magnetic disk rack, a permanent magnet, a windup spring and a bearing part; the power can be transferred according to the coupling transmission work condition and the slip transmission work condition; and the torque is changed according to the requirements in the slip transmission work condition.

The invention discloses a hybrid power system and a driving method thereof. The hybrid power system comprises an engine, wheels, a coupler, a first motor, a second motor, a first clutch, a second clutch, a first epicyclic gear train, a second epicyclic gear train and a brake. The hybrid power system is advantaged in that characteristics of the engine and the motors are utilized, optimal performance and oil consumption are achieved through two-stage planetary gear speed changing to drive the vehicle, moreover, the structure is simple; the gearbox and the motors are modularized; the double motors and a double planet row are adopted, through different combinations of two clutches and one brake, stable torque change can be achieved, the change range is wide, adaptability is high, and the structure is simple; during gear shifting, power is not completely interrupted, and the device is suitable for special-purpose vehicles with complex operation conditions.

The invention discloses a modular combined transmission which comprises a shell and a plurality of first speed-changing modules; each first speed-changing module is composed of an input shaft, an output shaft, a three-speed device and a converter; each three-speed device is composed of a gear mechanism, a C clutch, a B clutch and a D clutch; each gear mechanism is composed of an input gear, a plurality of middle shaft gear assemblies, an output gear and a gear retainer assembly which is formed by fixedly connecting a front retainer, a middle retainer and a back retainer and is provided with two cavities; the input gear, the gear retainer assembly and the output gear are coaxially arranged and can rotate relatively between every two of the input gear, the gear retainer assembly and the output gear; the middle part of the middle retainer is provided with a center output shaft as the gear mechanism first output end; a center output shaft pipe coaxially sleeves outside the center output shaft as the gear mechanism second output end; a driving component of the C clutch is fixedly connected with an input shaft, and a driven component of the C clutch is fixedly connected with the gear retainer assembly; a rotation component of the B clutch is fixedly connected with the gear retainer assembly, and a fixing component of the B clutch is fixedly connected with a shell; the D clutch is used for switching output of the gear mechanism; and only one of the B clutch, the C clutch and the D clutch can be locked.

The invention discloses a gearbox of an automatic gear shifting electric vehicle. The gearbox of an electric vehicle comprises a cabinet. The cabinet is internally provided with a main drive motor, a main transmission shaft extending from the main drive motor, and an output shaft parallel to the main transmission shaft. The main transmission shaft and the output shaft are respectively correspondingly provided with gear sets which can mesh, gearshift mechanisms, angle position sensors, and electronic control units. At least a free end of the output shaft is coaxial with a compensation motor. Compared with the prior art, the gearbox of an automatic gear shifting electric vehicle is advantaged in that: 1) multi-gears selection can satisfy requirements of vehicle maximum gradability, maximum speed, and maximum acceleration; 2) and the angle position sensors monitor positions of a gear shift pulling fork in real time, and feed back position signals to the electronic control units, when the gear shift pulling fork separates from a synchronizer, the compensation motor starts up, and startup of the compensation motor ensures no interruption of power in a gear shifting period.

The invention discloses a power-uninterrupted hydraulic gear shifting device. A hydraulic cylinder is installed on an input shaft and is provided with two valve element cavities in which a first linkage valve element and a second linkage valve element are installed correspondingly; one side of the first linkage valve element and one side of the second linkage valve element are each of a piston structure, are sealed through linkage valve element sealing rings and are provided with linkage valve element returning springs; the other side of the first linkage valve element and the other side of the second linkage valve element are each of a conical face structure; the end face area of the conical face side of each of the first linkage valve element and the second linkage valve element is smaller than the end face area of the other end; and the first linkage valve element and the second linkage valve element are reversely installed. The power-uninterrupted hydraulic gear shifting device is used for automobile gear position switching, and in the gear shifting process, power un-interruption can be achieved; after a gear position is shifted in, oil pressure built in the hydraulic cylinder can be kept all the time; and in the gear shifting process of two gear positions, only one of the two gear positions can be shifted in, and the two gear positions are mutually locked.

A power split type hybrid electric vehicle driving system comprises an engine and wheels, and further comprises a first motor, a second motor, a first clutch, a second clutch, a first epicyclic gear train, a second epicyclic gear train, a third epicyclic gear train, a first brake and a second brake. A power split type hybrid power topological mechanism is adopted, the power of an internal combustion engine is distributed on two paths, one path is a mechanical path, acting force can be directly transmitted to the wheels through gear engagement, the other path is an electric path, and besides the internal combustion engine and a driving device, an electric motor can apply the acting force to planetary gears. An engine rotating speed and a vehicle speed are decoupled, a working rotating speedrange of the engine is adjusted in real time through the generator, an engine output torque, the wheel rotating speed, a required wheel torque and other driving requirements are adjusted through thedriving motor, a working point of the internal combustion engine is more ideal, and whole vehicle fuel economy is improved to the maximum degree. Automatic gear shifting is achieved, power is ensurednot to be interrupted in the gear shifting process, and driving stability is guaranteed.

The invention discloses a suspension insulator low and zero resistance data wireless measurer, characterized in that a wireless emitter comprises an insulator spindle (1), a data acquisition and emission device (4) connected to the insulator spindle (1) through a rotary flange (2), a first data sampling electrode (5), and a second data sampling electrode (6); and the data acquisition and emission device (4) is connected by a bushing (4-1), and a voltage transducer (4-2), a first divider resistor (4-3), a second divider resistor (4-4), and a built-in emission antenna (4-5) which are all arranged in the bushing (4-1); an wireless receiver comprises the housing (7) of a liquid crystal display screen (8), a power supply module (10), a receiving module (11) connected to a receiving antenna (9), a decoder (12) and a data processing module (13). The suspension insulator low and zero resistance data wireless measurer has the characteristics of simple, convenient and fast operation, and wide application scope, can improve work efficiency, realize safe test, reduce costs, avoid power failure accidents, improve power supply reliability, and increase power supply service levels, and possesses high economic and social benefits.

The invention discloses a double-motor transverse electric drive axle assembly system and a shift control method. The system comprises a drive motor I, an input shaft I, an input shaft I gear, an engagement sleeve I, a countershaft, a countershaft gear I, a countershaft gear II, a countershaft gear III, a three-shaft gear, an engagement sleeve II, an input shaft gear II, a drive motor II, an inputshaft II, a three-shaft, a drive shaft half, a differential, a differential gear, a drive wheel, a spline connection A and a spline connection B. The system comprises a drive motor I, an input shaftI, a countershaft gear, a countershaft gear I, a countershaft gear I, a countershaft gear II, a three-shaft gear, a drive shaft half, a differential gear, a spline connection B, and a spline connection A. The method comprises the following steps: step 1, the low speed gear of the double motors is changed into the high speed gear of the double motors; step 2, the high speed gear of the double motors is changed into the low speed gear of the double motors; step 3, the control in the reverse gear mode; step 4, the braking control in each gear mode; the invention has the advantages that the poweroutput can be reasonably regulated, the power is saved, the effect of energy saving and environmental protection is achieved, the waste of electric energy is avoided, and the battery cost is reduced.

The invention discloses a hybrid electric vehicle engine start timing selection method. The current power requirement is judged through acquisition of the accelerator pedal stepping condition, then the electric quantity storage state of a power electric source is acquired to judge the current optimal drive power source, and the energy use rate of a hybrid electric vehicle is increased through control over the gear shifting of a gearbox and the start timing of an engine.

The invention discloses an emergency driving system of an ultra-large electric transmission wheel type loader. The emergency driving system comprises a power system, a walking system, a steering system, an emergency steering system and a whole vehicle control system; and when a vehicle breaks down, emergency driving can be quickly started, so that the vehicle runs to a designated place. An emergency treatment strategy is increased. In addition, the invention further discloses a control method of the emergency driving system of the ultra-large electric transmission wheel type loader, differentkinds of emergency driving control are carried out according to different fault types and faults in different types of the whole vehicle, and the running stability and safety of the whole vehicle areimproved.

The invention relates to the field of loader power transmission, aims to solve the problem that in a conventional loader traction transmission system, the traction transmission ratio cannot be regulated, and provides a loader traction transmission system which comprises an engine, a hydraulic torque converter, a gearbox, drive axles, a deceleration pedal, a clutch and a clutch control device, wherein the clutch is connected between the hydraulic torque converter and the gearbox; the deceleration pedal is connected with the clutch control device; when the deceleration pedal is within a front travel range, no brake action is taken by a brake system, and the engagement pressure of the clutch is controlled by the clutch control device according to the travel of the deceleration pedal; and when the deceleration pedal is within a rear travel range, the brake action is taken by the brake system according to the travel of the deceleration pedal. The loader traction transmission system provided by the invention has the advantages that the engagement pressure of the clutch is controlled through the front travel of the deceleration pedal, so that the trackslip of the clutch can be achieved, as well as the output rotational speed and the output torque can be changed and regulated; and when the deceleration is needed, the traction is regulated and reduced, so that the interruption in power transmission can be avoided and the safety of a complete loader can be improved.

The invention provides a dual-motor variable-speed electric drive axle system. The dual-motor variable-speed electric drive axle system comprises a first motor (EM1), a second motor (EM2), a first hollow shaft (3-I), a second hollow shaft (3-II), a differential mechanism (D), an intermediate shaft (4), a first clutch (A), a second clutch (B), a lock-up clutch (C) and a gear shifting mechanism (6). A double-motor speed control system is adopted, in the mode switching process, one motor is always kept in power connection, and therefore it can be guaranteed that power is not interrupted in the gear shifting process; three working modes are realized by using two pairs of gear sets, the structure is simple, and the space is saved; the design of two hollow shafts is adopted, the two hollow shafts are connected with the two motors respectively, and large-speed-ratio speed regulation is achieved while the compact structure is achieved; and the first clutch and the second clutch are bidirectionally connected left and right and are coaxially distributed with the lock-up clutch, the same gear shifting mechanism is adopted for control, the structure is compact, and the cost is reduced.

The invention provides a hybrid power coupled axle based on two gearboxes. According to the axle, a hybrid power assembly is conveniently arranged, output ranges of assembly power are widened, compensation of external power can be implemented under any gear shifting conditions, gears are smoothly shifted, and power cannot be interrupted. The axle comprises an engine, a first motor, a first gearbox, a differential mechanism, a second motor and a second gearbox, the first gearbox, the second gearbox and the differential mechanism are integrated into an integral axle, the output end of the first gearbox is connected with a main reduction gear through a gear structure, the output end of a motor shaft of the first motor is connected with an input shaft of the first gearbox, the other end of the motor shaft of the first motor is connected with the output end of the engine, the output shaft of the second motor is connected with the input end of the second gearbox, and the output end of thesecond gearbox is connected with a main reduction gear of the differential mechanism through a gear structure.

The invention belongs to the technical field of hybrid electric vehicles, and particularly relates to a hybrid power transmission device. A commercial vehicle hybrid power transmission device with a retarding function comprises a battery pack, a motor controller, a brake resistor, a first motor, a second motor, brakes and a planetary sub-confluence mechanism, wherein the first motor, the second motor, the brakes and the planetary sub-confluence mechanism are coaxially arranged. The planetary sub-confluence mechanism includes a power dividing planetary row, a first deceleration planetary row and a second deceleration planetary row. The brakes comprise a first brake and a second brake. The power dividing planetary row is connected with an input shaft, a rotor of the first motor and an outputshaft, and the first deceleration planetary row and the second deceleration planetary row are both connected to a rotor of the second motor and the output shaft. The first brake and the second brakeand the first deceleration planetary row and the second deceleration planetary row constitute a two-speed retarding mechanism. The commercial vehicle hybrid power transmission device utilizes the motors to realize braking energy recovery, the brake resistor is arranged to ensure that the braking power of the motors is consumed when the battery SOC is high, and the retarding brake function is stillachieved during long-time brake.

The invention discloses a power supply system of an industrial personal computer, which comprises a mains power grid. The mains power grid is connected with the industrial personal computer. The power supply system also comprises a standby power supply module, an MCU (micro control unit) and a current detection module, and the current detection module is connected between the mains power grid and the industrial personal computer and is used for detecting current signals and transmitting the current signals to the MCU; and the MCU is connected with the standby power supply module and is used for controlling communication of the standby power supply module and the industrial personal computer for supply of power to the industrial personal computer when no current signals are detected by the current detection module. By adopting the power supply system, uninterrupted power supply can be realized for the industrial personal computer, and the production stability can be ensured.

The invention discloses a power transmission system and a vehicle with the same. The power transmission system comprises an engine, a first motor generator and a second motor generator; a first input shaft which is in power connection with the engine and the first motor generator respectively; a second input shaft which is in power connection with the second motor generator; an intermediate shaft which is selectively linked with the first input shaft and is linked with the second input shaft; a transfer mechanism which is linked with the first input shaft; and an output shaft which is selectively linked with the intermediate shaft and / or the transfer mechanism. According to the power transmission system, the intermediate shaft and the transfer mechanism are arranged, the intermediate shaft, the transfer mechanism and the output shaft are selectively connected to form a plurality of transmission paths which do not interfere with one another, and therefore different power sources can be used for compensating power interruption in the gear shifting process during gear shifting.

The invention discloses a steering drive axle of a normal ground clearance, which comprises a front axle shell body, wherein the middle part of the front axle shell body is hinged with a front axle bracket and a holder through a rocking axle; both ends of the front axle shell body are connected with a tail shell body, and the outside of the tail shell body is hinged with steering joints; a hinging pull rod is arranged between the tail shell bodies at both sides and the holder, and a cross pull rod is hinged between steering joints at both sides; a main reducing gear, a differential mechanism assembly and two inner half axles connected to the differential mechanism assembly are installed in the front axle shell body, two inner half axles are connected to outside half axles at both sides through the universal joint. The steering drive axle has the advantages that the angle between the wheel and the front axle shell body can be changed along with the road condition such as irregular pavement or slope, thus the wheel can be self-leveled by matching with the car gesture in a big slope, and the contact face between the tire and the ground is increased, the safety and stability for driving and working are enhanced. Moreover, the axle is a drive axle, and can guarantee the big driving force of the vehicle, overcome obstacle and prevent slippage.

The invention relates to a planetary gear mechanism which comprises an input sun gear assembly (1), at least one planet wheel assembly (2), a planetary carrier assembly (4) and an output sun gear assembly (4), wherein the input sun gear assembly, the planetary carrier assembly and the output sun gear assembly are provided with coincident axes of rotation, and every two of the input sun gear assembly, the planetary carrier assembly and the output sun gear assembly can rotate relative to each other; the planetary carrier assembly and / or the output sun gear assembly can be fixed and can be selectively fixed, moreover every two of the input sun gear assembly, the planetary carrier assembly and the output sun gear assembly can be fixed mutually, wherein the locking and fixing can be carried out selectively; the planet wheel assembly can be rotatably installed on the planetary carrier assembly surrounding the axis; and each planet wheel assembly comprises two planet wheel (21, 22) which are connected together through a shaft to rotate coaxially and synchronously, and one of the two planet wheel is meshed with the input sun gear, while the other planet wheel is meshed with the output sun gear. The invention also relates to a speed changer comprising the planetary gear mechanism.

A voltage restoration system and method of operation thereof for providing loads connected to a distribution network of a public power system or network by boosting the voltage on distribution lines during temporary voltage dips caused by faults or other contingencies to provide voltage protection. This method includes voltage protection of loads connected to a distribution network on the utility power network from a voltage restoration system. Select the voltage protection characteristics required by the load, on the basis of the voltage restoration system and the electrical characteristics of the distribution network, determine whether the voltage restoration system can provide the required first voltage protection characteristics, and determine whether the voltage restoration system can provide the required Voltage protection characteristics, including determining the fault current capacity characteristics of the distribution network and the maximum voltage improvement characteristics that the voltage restoration system can provide. If the voltage protection characteristic is greater than the maximum voltage improvement characteristic, use the fault current capacity characteristic and the maximum voltage improvement characteristic to determine the impedance to be added to the distribution network in the form of an inductance.

The invention relates to a power system which can perform group charging and discharging at the same time to realize uninterruptable power supply. The power system comprises a plurality of energy storage units, a charging unit and a discharging unit, wherein the energy storage units can be separately charged or discharged; the charging unit is electrically connected with each energy storage unit and can be used to charge at least one energy storage unit; the discharging unit is electrically connected with each energy storage unit, and when the charging unit is used to charge at least one energy storage unit, the discharging unit can be used to discharge at least one of the other energy storage units. The invention can perform group charging and discharging at the same time in use, and although the voltage declines gradually, time is effectively used for supplementing voltage so as to provide uninterruptable power and achieve the purpose and effect of continuous use and time-saving.

The invention provides a manual-automatic integral transmission which is used for solving the problems that an existing outdated manual transmission is extremely high in operation fatigue degree, extremely low in efficiency, high in oil consumption of a gearbox of a hydraulic torque converter, and not prone to adjustment of vehicle speeds. The manual-automatic integral transmission comprises a gear shift operating device, a gear case, a hydraulic system, a control device and a trip computer, wherein the gear shift operating device is used for sending a manual / automatic mode switching signal and a gear shift operating signal, the gear case is used for achieving manual / automatic mode switching or a gear shift operation, the hydraulic system is used for controlling the gear case to work, and is connected with the gear case, the control device comprises a revolution speed transducer which is used for converting a revolving speed of wheels to an electric signal, and the trip computer is used for carrying out calculation, processing and judgment according to the obtained manual / automatic mode switching signal, the gear shift operating signal and the electric signal, and controlling the hydraulic system to work, and is connected with the gear shift operating device, the revolution speed transducer and the hydraulic system. The manual-automatic integral transmission achieves electronic control, and is simple in operation, rapid, intelligent, low in fatigue degree and high in efficiency.

The invention provides a modular combined transmission suitable for more gears. The modular combined transmission comprises a first gearshift module; the first gearshift module comprises an input shaft, an output shaft and a three-speed device; the three-speed device comprises a gear mechanism and clutches C, B and D; the gear mechanism comprises an input gear, an intermediate shaft gear assembly, a transition gear assembly, an output gear and a gear retainer assembly composed of a front retainer, a middle retainer and a rear retainer; the middle retainer is provided with a central output shaft serving as a second output of the gear mechanism; the outside of the central output shaft is sleeved with a central output shaft tube serving as a first output of the gear mechanism; and the first and final gears of the intermediate shaft gear assembly are respectively meshed with the input gear and the output gear, and the rest gears are meshed with a transition gear. A driving assembly and a driven assembly of the clutch C are respectively fixedly connected with the input shaft and the gear retainer assembly; a rotating assembly and a fixed assembly of the clutch B are respectively fixedly connected with the gear retainer assembly and a shell; and the clutch D is used for switching the output of the gear mechanism. One of the three clutches is selected to be locked. The modular combined transmission is simple in structure and easy to lay out.

The invention provides a two-gear hybrid gearbox and a gear shifting method thereof. The two-gear hybrid gearbox comprises an input shaft, and a first-gear drive gear, a second-gear drive gear, a second clutch and a first clutch are sequentially arranged on the input shaft from left to right; the first-gear drive gear is fixedly connected with the input shaft; the second-gear drive gear is rotatably connected with the input shaft; and an inner ring of the second clutch is fixedly connected with the input shaft. The gear shifting method of the two-gear hybrid gearbox comprises the steps that 11, an engine does not work, and a driving motor works; 12, the first clutch is opened, the second clutch is opened, and a one-way clutch is locked; 13, the driving motor transmits the torque to the input shaft; and 14, the torque is transmitted to an intermediate shaft from the input shaft through transmission connection between the first-gear drive gear and the second-gear drive gear. According tothe two-gear hybrid gearbox and the gear shifting method thereof, two-gear driving of engine driving is achieved, and power is not interrupted in the gear shifting process.