A control device for an electric vehicle is provided, which includes a drive motor of which magnetic poles of a rotor are comprised of variable magnetism magnets, and a clutch disposed between the drive motor and driving wheels. When the electric vehicle travels, the control device performs a torque control, and a first clutch control in which an engaging torque of the clutch is controlled to be higher than a demanded torque. When performing a magnetization control when the electric vehicle travels, the control device changes the clutch control from the first clutch control to a second clutch control in which the engaging torque is made to coincide with the demanded torque, before the execution of the magnetization control, and adds a given slip torque to the demanded torque to start a micro slip control in which the clutch is transitioned from an engaged state into a micro slip state.

An electrified vehicle includes a motor, a clutch, a transmission, a rotational speed sensor configured to detect a rotational speed of the motor, and a control circuit configured to control the motor. The control circuit performs: a learning process of detecting a change in the rotational speed of the motor by the rotational speed sensor when the shift change is performed; and a control process of controlling the rotational speed of the motor based on the change in the rotational speed detected in the learning process, when the shift change is performed after the learning process.

Embodiments of the present invention provide an electric machine control system for a vehicle, the electric machine control system comprising one or more controllers, wherein the vehicle comprises an electric machine arranged to be selectively coupleable to provide torque to at least one wheel of an axle of the vehicle, the control system comprising input means arranged to receive a speed signal (410) indicative of a speed of the vehicle and a status signal (470) indicative of a status of a coupling of the electric machine to the at least one wheel of an axle of the vehicle, output means (340) arranged to output a coupling signal to control coupling of the electric machine to the at least one wheel of the axle, and processing means arranged to determine (1210) a coupling state of the electric machine to the at least one wheel of the axle and to control the output means to output (1220) a coupling signal indicative of the determined coupling state, wherein the processing means is arranged, in dependence on the status signal being indicative of a failure (1230) to change the coupling state of the electric machine to the at least one wheel of the axle in dependence on a change in the determined coupling state, to control the output means to output the coupling signal (345) indicative of a retry (1250) of the change in the coupling state in dependence on the speed signal.

Embodiments of the present invention provide an electric machine control system for a vehicle, the electric machine control system comprising one or more controllers, wherein the vehicle comprises an electric machine arranged to be selectively coupleable to provide torque to at least one wheel of an axle of the vehicle, the control system comprising input means to receive a speed signal indicative of a speed of the vehicle, processing means arranged to determine a desired coupling state (525) of the electric machine to the at least one wheel of the axle in dependence on the speed signal, wherein the processing means is arranged to determine the desired coupling state as coupled in dependence on the speed signal being indicative of a vehicle speed equal to or below a first low-speed threshold (910) and to determine the desired coupling state as no-request in dependence on the speed signal being indicative of a vehicle speed above a second low-speed threshold (920), wherein the second low-speed threshold represents a vehicle speed greater than the first low-speed threshold, and output means arranged to output a coupling signal indicative of a request to couple the electric machine to the at least one wheel of the axle in dependence on the desired coupling state being coupled.

An apparatus comprising an interface and a processor. The interface may be configured to receive pixel data of an exterior environment of a vehicle. The processor may be configured to process the pixel data arranged as video frames, perform computer vision operations to detect objects in the video frames, extract characteristics about the objects detected, determine driving conditions in response to an analysis of the characteristics and generate a control signal. The control signal may be configured to perform a gear shift. The driving conditions may be used to predict a future drivetrain configuration of the vehicle. The gear shift may be performed if a comparison of the future drivetrain configuration with a current drivetrain configuration of the vehicle meets a threshold condition. The gear shift may not be performed if the comparison does not meet the threshold condition.

It is aimed to provide a power management system for an electrically driven vehicle that comprises a powertrain of at least two electric motors that can be selectively geared into the powertrain and an electric power source for powering the at least two electric motors. The power management system comprises a mechanical power demand indicator, indicating a level of mechanical power demanded from the powertrain, and an electrical power demand estimator, arranged to estimate an electrical power demand from the electric power source of a respective one of the at least two electrical motors as a function of the demanded mechanical power. The power management system is arranged to activate or deactivate a respective one of said at least two electric motors in response to the mechanical power demand indicator. The power management system is further arranged to deactivate a respective one of the at least two electric motors when the power management system detects that the demanded mechanical power does not exceed a maximum value for the powertrain having a respective one of said at least two electric motors deactivated; and that the estimated electric power demanded by the powertrain having the respective one of said at least two electric motors deactivated, is lower than the powertrain having the respective one of said at least two electric motors activated; or otherwise activate the respective one of the at least two electric motors.

A drive unit with enhanced rearward drive force includes a first drive part and a second drive part. The first drive part includes a first electric motor and a first torque converter. The first electric motor is configured to be rotated in a first rotational direction and a second rotational direction. The first torque converter is configured to amplify a torque generated by the first electric motor when the torque generated by the first electric motor is directed in the first rotational direction. The second drive part includes a second electric motor and a second torque converter. The second electric motor is configured to be rotated in the first rotational direction and the second rotational direction. The second torque converter is configured to amplify a torque generated by the second electric motor when the torque generated by the second electric motor is directed in the second rotational direction.

Described herein are latching devices where relative speed of movement between members is in part controlled or reduced via eddy current formation and in part controlled or relative motion stopped via a latch arrangement. Various embodiments are described, one being use of a conductive member; at least one magnetic field and a latch member that, prior to latching, moves independently to the at least one conductive member. A kinematic relationship exists between the conductive member and at least one magnetic field that enables the conductive member to move at a different speed relative to the magnetic field on application of an energizing force, thereby inducing an eddy current drag force by relative movement of the conductive member in the magnetic field. The eddy current drag force resulting causes movement of the conductive member causing the conductive member to engage the latch member thereby halting movement between the at least one conductive member and the at least one latch member.

A drive device includes a fluid coupling, a rotary electrical machine, and a damper device. The fluid coupling includes an input unit and an output unit. The input unit includes an impeller. The output unit includes a turbine. The rotary electrical machine includes a first stator and a rotor. The first stator is disposed in a non-rotatable manner. The rotor is attached to the output unit. The damper device is disposed axially adjacent to the fluid coupling. The damper device is connected to the input unit.

A system and a method for controlling shifting stage of a hybrid vehicle may include a speed detecting device that detects a vehicle speed, an automatic transmission that changes a shifting stage of the vehicle, and a shift controller connected to the speed detecting device and the automatic transmission. The shift controller is configured to determine a start of shift control based on a travel environment and a travel state of the vehicle, compares the vehicle speed with a target vehicle speed when the start of the shift control is determined, and performs the shift control based on a state of charge of a battery of the vehicle and a regenerative braking amount of the vehicle when the shift controller concludes that the vehicle speed exceeds the target vehicle speed.