A control process including the following steps is executed. The control process includes, at the time of switching from series-parallel mode to series mode, a step of reducing an engine torque, a step of releasing a clutch, a step of reducing a reaction torque of a first rotary electric machine and a step of increasing a torque of a second rotary electric machine, and, when synchronization is started and a step of increasing a positive torque of the first MG, a step of starting engagement of a clutch, and, when a rotation speed of the first rotary electric machine and a rotation speed of an engine are synchronous with each other, a step of engaging the clutch.

Methods and systems are provided for selectively engaging an electric machine to an electric axle of a vehicle. In one example, a method may include engaging or disengaging the electric machine to a differential of the electric-axle by adjusting pressure in a piston coupled to an axle shaft of the electric-axle via a disconnect clutch.

Described herein are techniques for optimizing operation of a fleet of electric vehicles. In some embodiments, a fleet management platform may maintain, in relation to a plurality of drivers, driving behavior patterns determined to be associated with the each of the plurality of drivers. Upon receiving a request for optimization of at least one operation related to a fleet of electric vehicles, such techniques may comprise determining one or more factors associated with the optimization of the at least one operation, identifying a set of driving behavior patterns correlated to the one or more factors, and customizing the at least one operation based on the identified set of behavior patterns and the driving behavior patterns.

Described herein are techniques for optimizing operation of a fleet of electric vehicles. In some embodiments, a fleet management platform may maintain, in relation to a plurality of drivers, driving behavior patterns determined to be associated with the each of the plurality of drivers. Upon receiving a request for optimization of at least one operation related to a fleet of electric vehicles, such techniques may comprise determining one or more factors associated with the optimization of the at least one operation, identifying a set of driving behavior patterns correlated to the one or more factors, and customizing the at least one operation based on the identified set of behavior patterns and the driving behavior patterns.

An electrified vehicle includes a controller in communication with an on-board charger configured to charge a traction battery from an external power source, the traction battery being configured to power an electric machine that provides propulsive torque to vehicle wheels, the controller programmed to generate an alert message identifying an alternative external power source that would reduce a difference between (a) power requested by the controller, and (b) power currently being delivered by the external power source when the difference exceeds a configurable threshold.

An electrified vehicle includes a controller in communication with an on-board charger configured to charge a traction battery from an external power source, the traction battery being configured to power an electric machine that provides propulsive torque to vehicle wheels, the controller programmed to generate an alert message identifying an alternative external power source that would reduce a difference between (a) power requested by the controller, and (b) power currently being delivered by the external power source when the difference exceeds a configurable threshold.

A switchable powertrain comprises at least four points of freedom. The switchable powertrain comprises a main gear set configured for gear ratio selection, the main gear set comprising main gears coupled to a main shaft and second gears coupled to a second shaft. An adapter comprises a first selective coupling configured to selectively couple to the main shaft, and a second selective coupling configured to selectively couple to the second shaft. A first torque source and a clutch are configured for selectively coupling or decoupling first torque to the main shaft. A second torque source is configured for selectively outputting second torque to the first selective coupling or to the second selective coupling.

A battery discharge limit control system is provided. The system includes a motor driven by receiving the power stored in a battery and a clutch connected to the rotary shaft of the motor. Additionally, an engine includes the rotary shaft connected to the rotary shaft of the motor through the clutch and a transmission changes the rotational speed of the rotary shaft of the motor or the engine based on the input of the shift stage instruction to output the rotational speed to a driving wheel of a vehicle. A controller opens the clutch and drives the motor in the reverse rotation, when the input of the shift stage instruction is a reverse shift stage.

A battery discharge limit control system is provided. The system includes a motor driven by receiving the power stored in a battery and a clutch connected to the rotary shaft of the motor. Additionally, an engine includes the rotary shaft connected to the rotary shaft of the motor through the clutch and a transmission changes the rotational speed of the rotary shaft of the motor or the engine based on the input of the shift stage instruction to output the rotational speed to a driving wheel of a vehicle. A controller opens the clutch and drives the motor in the reverse rotation, when the input of the shift stage instruction is a reverse shift stage.

At least some embodiments of the present disclosure are directed to systems and methods of online power management for hybrid powertrains. In some embodiments, the hybrid powertrain control system is configured to conduct a brake-thermal-efficiency (BTE) estimation procedure when the powertrain is in operation by operating the hybrid powertrain at a plurality of speeds for a plurality of designated power levels and select certain BTE operating conditions to update the power management.