Methods and systems of power management in a hybrid vehicle are disclosed. A control system of the hybrid vehicle obtains battery temperature and catalyst temperature. The control system determines (a) whether the battery temperature is within an optimal battery temperature range and (b) whether the catalyst temperature is within an optimal catalyst temperature range. The control system determines a power split ratio (PSR) based on the determination of (a) and (b). The control system controls the engine and the motor-generator based on the determined PSR.

An HV-ECU executes processing of steps. The steps include: a step of turning on a result display permission flag when an assist condition visible to a user is established; a step of calculating energy consumption in each travel section and total energy consumption when all the assist conditions are established and look-ahead information is updated; a step of generating a travel plan when the total energy consumption is greater than remaining energy; a step of executing switching control in accordance with the travel plan; and a step of outputting a result display when the result display permission flag is in an ON state when a vehicle reaches a destination.

A method for operating a motor vehicle. A map of corresponding event locations for one or more high load events is provided, wherein the one or more high load events have historically led to an above-average load on a vehicle component. A current position and/or route of the motor vehicle is determined. A high load event is identified from among the one or more high load events as likely to be relevant to the motor vehicle during the current operation. The identification of the high load event is based on the current position and/or route of the motor vehicle. The vehicle component is thermally preconditioned, via a corresponding automatic control of at least one device of the motor vehicle, before the motor vehicle has reached the corresponding event location of the identified high load event.

Systems and methods for operating a hybrid powertrain that includes an engine and a motor/generator are described. The systems and methods adjust torque converter clutch opening responsive to whether or not a motor/generator is available to provide a negative torque to a driveline. Further, the motor/generator and the vehicle's engine are operated to provide a desired amount of driveline braking.

A work machine includes an engine, a motor-generator, a battery, a power detector, a temperature detector, and circuitry. The engine is to move the work machine. The motor-generator is to move the work machine and to generate electric power. The battery is to store the electric power generated by the motor-generator. The power detector is to detect a charge level of the electric power stored in the battery. The temperature detector is to detect a temperature of the battery. The circuitry is configured to control the motor-generator in accordance with the charge level selectively to move the work machine or to generate electric power when the temperature of the battery detected by the temperature detector is within a temperature range.

When an output limitation value of a battery is equal to or less than a threshold, an electronic control unit determines that basic torque is able to be output from a second motor to a drive shaft. Then, the electronic control unit sets a predetermined value as a target motoring rotation speed for ending motoring of an engine by a first motor. When the output limitation value is greater than the threshold, the electronic control unit determines that the basic torque is unable to be output from the second motor to the drive shaft at the time of starting the engine, and sets a value smaller than the predetermined value as the target motoring rotation speed.

A vehicle has an engine (26), a power storage device (10), two motor/generators (M/G1, M/G2), a front grille with a shutter, an engine room, a first temperature sensor, a second temperature sensor, and a controller. The shutter changes the amount of air introduced from the front grille into the engine room. The first temperature sensor detects a temperature (Tw) of a coolant of the engine, and outputs the detected coolant temperature to the controller. The second temperature sensor detects an outside air temperature (Te), and outpots the detected outside air temperature to the controller. The controller starts the engine (26) when the coolant temperature is equal to or lower than a threshold value. When the coolant temperature is higher than the threshold value, and the vehicle starts traveling in a first mode with power from the power storage device (10), the controller drives the shutter such that the amount of the air is reduced when the coolant temperature (Tw) is higher than the outside air temperature (Te).

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 at least one attribute signal indicative of one or more attributes (410, 420, 430) of the vehicle and an efficiency signal (440) indicative of selection of an efficiency-based driving mode, output means arranged to output a coupling signal to control coupling of the electric machine to the at least one wheel of the axle, processing means arranged to determine (1510) a first coupling state of the electric machine to the at least one wheel of the axle in dependence on the at least one attribute signal and to determine (1520) a second coupling state of the electric machine to the at least one wheel of the axle in dependence on the at least one efficiency signal, wherein the processing means is arranged to control (1540) the output means to output the coupling signal indicative of the first and second coupling states when the same, and to output (1550) the coupling signal indicative of the first coupling state when the determined first and second coupling states differ.

A method for assisting a power-intensive driving maneuver of an ego vehicle propelled by an electric motor fed from an energy-storage device includes predicting a power-intensive driving maneuver of the ego vehicle, ascertaining a peak-power profile that is needed for a complete execution of the predicted driving maneuver, and determining an available propulsive power of the ego vehicle. The method further includes ascertaining whether the available propulsive power is sufficient for the peak-power profile and, if the available propulsive power is sufficient for the peak-power profile, indicating a recommendation for execution of the predicted driving maneuver. If the available power is not sufficient for the peak-power profile, the method further includes ascertaining whether the available propulsive power is sufficient for a restricted peak-power profile that is needed for a restricted execution of the predicted driving maneuver, indicating a recommendation for restricted execution of the predicted driving maneuver if the available propulsive power is sufficient for the restricted peak-power profile, and indicating a recommendation for non-execution of the predicted driving maneuver if the available propulsive power is not sufficient for the restricted peak-power profile.

An electric vehicle and a range extender engine are shown including the controls to operate the same.