A method to control a hybrid powertrain (2) in a vehicle, the powertrain including a combustion engine (3), an electric machine (4) and a gearbox (6) with an input shaft (10) and output shaft (18), wherein the combustion engine (3) and the electric machine (4) are connected to the input shaft (10). The method includes the steps of controlling the gearbox (6) to a neutral position; controlling the speed of the electric machine (4) to a predetermined speed, corresponding to a target speed for the input shaft (10) according to the next selected gear; engaging a gear in the gearbox (6); controlling the electric machine (4), so that the electric machine (4) accelerates or decelerates depending on a requested driving torque for the vehicle (1); detecting when a control signal for the electric machine (4) corresponds to a predetermined signal value; and controlling the electric machine (4) to the requested driving torque. Also, a hybrid powertrain and a vehicle (1), and a computer program (P) and a computer program product for performing the method are disclosed.

In a method for controlling a vehicle with a drive system comprising a power unit configuration adapted to provide power for the vehicle's operation, and further comprising a planetary gear and a first and second electrical machine, connected to components in the planetary gear via their rotors, a locking means is moved from a release position, in which the planetary gear's components are free to rotate independently of each other, to a locked position, in which two of the planetary gear's components are locked together, so that the three components in the planetary gear rotate with the same speed. The power unit configuration is controlled in order to achieve a synchronous, or substantially synchronous, rotational speed between the input and output shaft of the planetary gear, and the locking means are then moved to the locked position.

A gearbox includes an input shaft and an output shaft; a first epicyclic gear connected to the input shaft; a second epicyclic gear connected to the first epicyclic gear; a first electrical machine connected to the first epicyclic gear; a second electrical machine connected to the second epicyclic gear; a first gear pair arranged between the first epicyclic gear and the output shaft; and a second gear pair arranged between the second epicyclic gear and the output shaft; a first planet gear carrier in the first epicyclic gear connected to a second sun gear in the second epicyclic gear; a first sun gear in the first epicyclic gear connected to a first main shaft; and a second planet gear carrier in the second epicyclic gear is connected to a second main shaft.

A control method is applied to a hybrid power system including an engine and a motor. A motor stator of the motor is connected to a driving shaft of a motor vehicle by means of a transmission mechanism such that, when rotated, the driving shaft drives the motor stator to rotate; the motor is used to determine output torque according to the rotating speed of the motor and transmit same to the driving shaft; the rotating speed of the motor is equal to the difference between the rotating speed of the motor rotor and the rotating speed of the motor stator. The method includes, according to operating parameters of the hybrid power system and operating parameters of the motor vehicle, controlling a motor controller to provide a drive signal to the motor stator such that the operating parameters of the motor meet a first preset formula.

An information processing device (or a vehicle control device) includes: a vehicle information obtainer that obtains a first moving speed of a vehicle; a communicator that obtains an operation amount of an operation related to a speed by an instrument for a remote operation of the vehicle; a vehicle speed instruction generator that generates a second moving speed based on the operation amount; and an outputter that outputs the operation amount as a moving speed control amount, when the first moving speed is lower than a first threshold, and a control amount converted from the second moving speed as the moving speed control amount, when the first moving speed is higher than or equal to a second threshold.

A method for shifting between a low speed range and a high speed range for a two-speed transfer case in a four-wheel drive vehicle includes determining a target transmission gear ratio and a desired transfer case range based on the current vehicle speed and the initial transfer case range. The transmission is shifted to the target transmission gear ratio when it is determined that the vehicle speed is in an appropriate range. The transfer case input torque is reduced to a minimum value, and the transfer case is shifted to neutral. The method further includes adjusting the engine speed and transmission gear setting to control the transmission output shaft speed to a desired range. The transfer case is shifted from neutral to the desired transfer case range when the transmission output shaft speed is within the desired range of transmission output shaft speed.

A power take-off system and method is provided for a vehicle that includes an internal combustion engine, an electrical generator, an electrical machine, a power take-off summing planetary and a power take-off brake. The power take-off system includes a controller and a human-machine interface. The controller is configured to receive an input from the human-machine interface to select one of a variable speed power take-off mode, an electrical power generation mode, and a full power fixed ratio power take-off mode of operation. In the variable speed power take-off mode, electrical power from the electrical generator and rotational power by the power take-off system are output, and the electrical machine receives electricity and provides rotational power. In the electrical power generation mode, the electrical generator and the electrical machine both provide electrical power. In the full power fixed ratio mode, no electrical power is provided.

A method for operating a drive axle, a control unit for carrying out the method, a drive axle, and a motor vehicle. In the method, a driving state variable is detected which characterizes the current driving situation. A coupling probability value K is ascertained on the basis of the driving state variable, and if the coupling probability value K is greater than a threshold G, the rotational speed of the transmission output element is adapted to a wheel driveshaft rotational speed via an electric traction machine. The process of adapting the rotational speed is carried out in a predictive manner, i.e. regardless of whether a coupling process is subsequently initiated in which the transmission output element and the wheel driveshaft are rotationally fixed to each other.

The disclosure herein generally relates to vehicle control systems and more particularly, to a system and a method for controlling a powertrain for reducing power loss of a traction motor in the vehicle such as but not limited to an electric vehicle. The system (100) includes a main controller unit (102), a vehicle speed sensor (104), a throttle sensor (106), a control switch (108), a motor speed sensor (10S), a traction motor controller (10TMC) and a transmission controller unit (10TCU). The system optimizes the operating zone of the traction motor (10TM) for achieving better efficiency of the traction motor (10TM). The system reduces power consumption required for cooling battery and powertrain components of the vehicle due to less heat generation achieved by operating the traction motor (10TM) in higher efficiency zone.

A method for controlling propulsion of a heavy-duty vehicle, where the heavy-duty vehicle comprises a differential drive arrangement arranged in connection to a drive axle with a left wheel and a right wheel is provided. The method includes determining a nominal shaft slip corresponding to a desired wheel force to be generated by the drive axle wheels, wherein the nominal shaft slip is indicative of a difference between a current vehicle velocity and a vehicle velocity corresponding to the shaft speed, determining a difference between a speed of the left wheel and a speed of the right wheel, adjusting the nominal shaft slip in dependence of a magnitude of the wheel speed difference to a target shaft slip, and controlling the shaft speed based on the target shaft slip.