19 results about "Shift time" patented technology

The present application belongs to the field of shift control, and specifically provides an AMT natural gas commercial vehicle shift torque control method, device, equipment and storage medium, the method comprising: calculating a predicted shift point and calculating a predicted shift time in real time according to the predicted shift point; adjusting the engine torque after reaching the predicted shift time; the predicted shift time is earlier than the actual shift time; after reaching the actual shift time, the target torque required by the current AMT is calculated, and the current engine torque is monitored at the same time; comparing the error between the target torque and the current engine torque, and adjusting the requested torque in real time by using a PID controller. After the torque reduction starts, the AMT target torque and the current natural gas engine torque during the shift process are compared in real time, the current natural gas engine requested torque is adjusted by PID control, the current natural gas engine torque and the AMT required target torque are changed synchronously, and the torque control hysteresis problem during the shift of the matched AMT natural gas commercial vehicle can be avoided.

The invention discloses a gear shifting detection method of a DCT transmission assembly, which is characterized in that cyclic gear shifting detection is performed on each gear of the DCT transmission assembly at a standard test starting point, and gear shifting parameters such as input rotating speed and gear shifting time are brought into detection, so that the detection of the DCT transmission assembly is more comprehensive, and the detection result is more reliable. A certain judgment logic is added in gear shifting detection, abnormal conditions occurring in the gear shifting detection process can be processed, detection of faults and gear shifting performance which does not reach the standard obviously can be ended in advance, detection resources can be saved, and detection efficiency can be improved; therefore, the problem that the offline detection reliability of a traditional DCT transmission assembly is poor can be effectively solved, the comprehensiveness of detection can be optimized, and the offline quality of the DCT transmission can be improved.

A method for torque control of an internal combustion engine of a vehicle according to a transmission hydraulic pressure, comprising: providing an internal combustion engine torque converter connected to the internal combustion engine and an automatic transmission of the vehicle, the internal combustion engine torque converter being configured to distribute the torque of the internal combustion engine to the wheels of the vehicle; confirming (S10), by an internal combustion engine torque control device (10), whether a turbine speed differential satisfies an internal combustion engine torque control entry condition during the shifting of the automatic transmission; calculating (S20), by the internal combustion engine torque control device (10), a required turbine torque to prevent a shift shock using at least one of a turbine angular acceleration, a driving resistance torque, or a clutch magnet torque; performing (S30),by the internal combustion engine torque control device (10), using a turbine torque factor learning, as a stored value of the turbine torque factor learning, a result obtained by applying an accelerator pedal value and / or an internal combustion engine torque and / or a transmission fluid temperature at the beginning of the actual shifting operation, to an entry condition of the turbine torque factor learning under the condition that no breakaway occurs during the shifting operation, applying an average turbine acceleration or an average internal combustion engine torque reference reduction to a condition to prevent the turbine torque factor learning, and generating and storing the result of the turbine torque factor learning according to the shift time that started at the actual shift start point, convert (S40), by the internal combustion engine torque control device (10),of the stored value of the turbine torque factor learning into an internal combustion engine torque control value by the required turbine torque, and applying, by the internal combustion engine torque control device (10), the internal combustion engine torque control value to the output of the internal combustion engine.

The invention relates to a method for calculating a shift time for a gear change in a transmission or a switchable e-axle of a vehicle, wherein a compensation factor for shifts without interruption of traction is calculated, which reduces the predicted shift time for shifts without interruption of traction so that it represents an equivalent to a shift time of a shift with interruption of traction, wherein a virtual shift time for shifts without interruption of traction is calculated, wherein the calculated shift time is compared with shift times of shifts with interruption of traction and is used for gear selection.

The application relates to a multi-working-mode parallel hybrid power system, wherein a second clutch device (13) is arranged in the motor variable speed module, a third clutch device (14) is arranged between the output end of the engine variable speed module and the output end of the motor input gear pair, and the switching of the second clutch device (13) and the third clutch device (14) can realize the switching of different working modes of the hybrid power system; the motor and the engine can be independently shifted, and power transmission is continuously uninterrupted during the shifting process; the pure electric driving capacity is improved, and the starting torque is increased; the engine and the motor are independently driven in the engine and motor independent driving modes, the driving efficiency is higher under high-speed working conditions; power complementation is realized during the shifting process of the motor and the engine, the shifting time requirement is low, and the shifting reliability is high.

The invention discloses a planet row structure gearbox gear shifting control method and system and a vehicle, and relates to the technical field of gearbox control, the method is applied to a planet row mechanical automatic gearbox without a synchronizer, and the method comprises the steps that gear and rotating speed information is obtained; calculating an initial target motor rotating speed corresponding to the target gear based on the planet row transmission relation; the initial target rotating speed is corrected according to the rotating speed change relation after gear shifting, upper correction is carried out during gear shifting, and lower correction is carried out during gear shifting; and the motor is controlled to adjust the speed according to the corrected rotating speed, and gear advancing is executed when the real-time rotating speed difference of related parts in the planet row falls into a preset gear advancing synchronization threshold value interval. The system comprises corresponding function modules. For a multi-axle drive vehicle, compensation is also performed based on other axle power disturbances. According to the invention, gear pushing and gear hitting during gear shifting can be effectively avoided, the gear shifting time is shortened, and the gear shifting smoothness and reliability are improved.

A work vehicle has two transaxles carried by a chassis each having wheel end units rotatable to drive ground-engaging members about wheel axes and having electric machines powering transmission configured to effect multiple gear ratios. The electric transaxles are operationally mechanically uncoupled. One or more sensors detect speed, heading, and loading characteristics of the work vehicle. A controller, having memory and processing architecture, is configured to process control to: receive from the one or more sensors input of the speed, heading, and loading characteristics of the work vehicle. The controller determines a shift pair sequence for shifting the first transmission and the second transmission based on the received input of the speed, heading, and loading characteristics of the work vehicle. The shift pair sequence defines a shift time (tS1) for shifting the first transmission and a shift time (tS2) for shifting the second transmission in which the shift time tS1 is the same or different than the shift time tS2. The controller generates a first shift command to shift the first transmission at the shift time tS1 while the second electric transaxle drives the work vehicle and generate a second shift command to shift the second transmission at the shift time tS2 while the first electric transaxle drives the work vehicle.

The application discloses a self-learning method and device, equipment and a storage medium, and is used for improving the efficiency of vehicle connection self-learning. The application monitors a vehicle, obtains parameter information corresponding to a shift operation if it is determined that the shift operation is triggered, determines a shift speed difference corresponding to the shift operation based on the parameter information, determines whether self-learning of a target working condition corresponding to the shift operation converges according to the shift speed difference, determines a target fuel injection pressure value corresponding to the vehicle based on the shift speed difference if the self-learning does not converge, and updates a current fuel injection pressure of the vehicle according to the target fuel injection pressure value. In the embodiment of the application, whether the self-learning of the target working condition converges is determined according to the shift speed difference, the current fuel injection pressure of the vehicle is updated in the case where it is determined that the self-learning of the target working condition does not converge, and then the shift time can be reduced and the shift process can be optimized.

The electric vehicle (10) of the present disclosure is configured to use an electric motor (2) as a power unit for traveling. The electric vehicle (10) includes an accelerator pedal (22), a sequential shifter (26), and a controller (50). The controller (50) is configured to change a motor torque output by the electric motor (2) in response to operation of the accelerator pedal (22) and operation of the sequential shifter (26). The controller (50) is configured to change a change rate of the motor torque at least twice during a preset shift time in response to the operation of the sequential shifter (26).

The application provides a shift assisting control method of a hybrid vehicle and the hybrid vehicle, and solves the technical problems of energy waste caused by long shift time of the hybrid vehicle in the prior art and shift failure caused by motor failure. The application provides a shift assisting control method of a hybrid vehicle and the hybrid vehicle, the speed of the power input shaft of the gearbox is regulated by regulating the opening of the exhaust throttle valve and / or the valve closing rate, so that the speed of the power input shaft of the gearbox is consistent with the speed of the power output shaft of the gearbox, thereby assisting the shift of the hybrid assembly to realize quick shift, reducing the shift time during the shift, effectively reducing the energy waste caused by long shift time of the hybrid gearbox, and when the motor is used as the drive, even if the motor fails, the shift can still be completed.

An apparatus for diagnosing an automatic transmission for detecting an abnormality during travel of a vehicle, the apparatus including a G sensor configured to measure a vibration signal including a longitudinal vibration signal, a state detection unit configured to obtain the vibration signal of the G sensor and state data of a transmission sensor and an engine sensor of the vehicle, and a controller configured to check an operating element for each shift operation by using a current gear, a target gear, and a shift time detected as the state data, measure the longitudinal vibration signal of the G sensor to calculate a fluctuation level of the longitudinal vibration signal for each operating element, and determine a shift shock event when a longitudinal vibration signal value exceeds a reference value after adjustment based on a travel acceleration of the vehicle.

The embodiment of the application provides an AMT auxiliary shaft brake control system, method and device, to solve the technical problem that the opening time of the electromagnetic valve is difficult to accurately calculate when the existing AMT auxiliary shaft brake, which can easily cause the auxiliary shaft brake to be insufficient or too much, directly leading to the shift time being too long or the shift impact. The system comprises a gearbox oil temperature sensor, a gearbox controller, a PWM intake electromagnetic valve, an exhaust electromagnetic valve, an auxiliary shaft brake pad, an auxiliary shaft and an auxiliary shaft sensor; wherein the auxiliary shaft brake pad is connected to the PWM intake electromagnetic valve and the exhaust electromagnetic valve respectively, the opening degree of the PWM intake electromagnetic valve can be adjusted to change the intake amount and provide different brake forces, and the exhaust electromagnetic valve is used for exhaust pressure relief and brake release. The auxiliary shaft brake can be accurately controlled to avoid insufficient or excessive braking and improve the shift performance.

An apparatus for supporting off-road driving includes a controller configured to receive off-road driving data of a vehicle and control a shift timing of the vehicle according to shift timing control data by applying the off-road driving data to a shift timing control logic, wherein the shift timing control logic may be configured to vary the shift timing according to a possibility of the vehicle stuck in off-road terrain based on the off-road driving data.

The application provides a gear shifting control method, device, equipment and storage medium. The current driving mode and the current gear of a target vehicle are obtained; the current up-down gear working condition of the target vehicle is determined; in the up-down gear working condition, the target gear shifting type coefficient of the target vehicle is determined according to the current driving mode and the current gear; the target gear shifting type coefficient is sent to an automatic gearbox control module, the target gear shifting type coefficient is used to instruct the automatic gearbox control module to determine a gear shifting time according to the target gear shifting type coefficient, and the gear of the target vehicle is controlled according to the gear shifting time. The gear shifting type coefficient is calibrated by the target vehicle controller according to different driving modes and different working conditions, and different gear shifting type coefficients are corresponded to gear times, so that different gear shifting times can be corresponded to different target gear shifting type coefficients, the target vehicle can flexibly select the configured gear shifting style within a certain range, and the individualized setting of gear shifting is realized.

The invention provides a gear shifting control method and device, a vehicle and a storage medium, the method is applied to the field of vehicles, and the method comprises the steps that in the gear engaging process, if it is detected that a gear shifting motor is in a locked-rotor state, a driving motor is controlled according to a set jitter torque, and according to a set jitter duty ratio, the driving motor is controlled according to the set jitter torque; the gear shifting motor is controlled to conduct position propelling so that the gear shifting motor can drive a gear shifting point to move at the gear shifting ending position; in the process that the driving motor works according to the set shaking torque and the gear shifting motor works according to the set shaking duty ratio, whether the preset condition of continuing gear engaging is met or not within the first preset duration is judged; if the preset condition is met, whether a gear shifting finger reaches the gear shifting ending position or not is judged; and if the gear shifting finger reaches the gear shifting ending position, it is determined that gear engaging is ended. According to the method, after the stalling of the gear shifting motor is detected, the gear shifting duration is shortened, and the gear shifting success rate is increased.

The invention discloses a dual-motor hybrid power system testing method and device and electronic equipment, and belongs to the technical field of automobiles, and the dual-motor hybrid power system testing method comprises the steps: S1, in a pure electric driving mode, obtaining the gear shifting time, impact degree and rotating speed fluctuation corresponding to different output torques of a driving motor MG2 during gear shifting of a vehicle; and S2, in the hybrid driving mode, simulating vehicle gear shifting, switching the driving motor MG2 into a rotating speed control mode for speed regulation, enabling an engine to enter a PID rotating speed control mode, measuring high-frequency data of total output torque changing along with time, and adjusting compensation torque of the driving motor MG2 after gear engaging succeeds, so that impact borne by the hybrid power system in the gear shifting process is minimum. Multi-mode simulation reproduction of complex working conditions, data synchronization and efficiency analysis provide a data basis for optimization of an economic zone and a power zone, and a compensation torque concept is introduced in the gear shifting process to reduce impact.

The invention relates to the field of gear-shifting electromagnets, and discloses a symmetrical keeping and symmetrical driving type gear-selecting electromagnet and an armature sleeve manufacturing process thereof.The symmetrical keeping and symmetrical driving type gear-selecting electromagnet comprises an armature sleeve (4) and two coils (2) arranged outside the armature sleeve (4) in a sleeving mode, the left end and the right end of a movable iron core (3) are each provided with a magnetism isolating gasket (32), and the number of turns of the two coils (2) is the same; the coils (2) are arranged outside the armature sleeve (4) in a sleeved mode and are arranged in a bilateral symmetry mode relative to the longitudinal axis of the movable cavity (40), and a permanent magnet (5) arranged outside the armature sleeve (4) in a sleeved mode is further installed between the two coils (2). Firstly, the electromagnet is of a mechanical electromagnetic structure, the response time is shorter than 30 milliseconds, and the requirement of the AMT for gear shifting time is met; secondly, the driving force of the gear shifting action is the electromagnetic force applied to the moving iron by the coil and is not influenced by the air pressure of the vehicle; moreover, when the coil is not electrified, a magnetic circuit formed by the permanent magnet can be used for keeping the moving iron, and no extra device is needed.

The application discloses a taxi driver driving behavior scoring prediction method, system, terminal and medium. The method comprises the following steps: acquiring vehicle running state, weather, fault and scheduling data; integrating the vehicle static time period by using the gamma distribution, determining the actual shift time and dividing the driver shift; counting the driving behavior index per 100 kilometers, associating the weather and the responsible fault label, and constructing a training sample set; training a binary classification model by using a LightGBM algorithm, and outputting a fault probability; and mapping the probability to a normal distribution score of 15-95 points by using a cumulative distribution function and a standard normal quantile. The application also provides a corresponding system, an intelligent terminal and a storage medium. The application solves the problem of data attribution error caused by ambiguous shift time, integrates multi-dimensional features such as driving behavior, weather and historical faults, realizes forward-looking prediction of fault probability, the score is intuitive and can be compared across time periods, supports incremental learning, and significantly improves the accuracy and practicality of driving behavior evaluation.

The invention discloses a gear shifting control system and method for the high-pressure limp working condition of a P2 hybrid commercial vehicle, and relates to the technical field of hybrid transmission of commercial vehicles. Comprising a whole vehicle controller HCU, a gearbox controller TCU, an engine controller ECU, a motor controller MCU and a clutch execution mechanism which are in network communication connection through a whole vehicle CAN bus. When the TCU detects a high-voltage fault, the limp gear shifting mode is activated, after the ECU unauthorized control authority is obtained, a cooperative control instruction is generated based on the gear shifting type, the torque and the rotating speed of an engine are adjusted through the ECU, the clutch executing mechanism adjusts the clutch connection state and depth, and accurate speed adjustment of an input shaft is achieved. The problems of long gear shifting time and gear shifting failure caused by large rotational inertia of the input shaft when the P2 hybrid commercial vehicle has a high-voltage fault are effectively solved, the gear shifting time consumption is remarkably shortened, the gear shifting success rate and the driving safety are improved, and reliable operation of the vehicle under the high-voltage limp working condition is guaranteed.