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.

A power conversion device includes a main battery, an auxiliary battery, an inverter circuit, a high-voltage wiring, a smoothing capacitor, a main wiring, a subsidiary wiring, a DC-DC converter and a controller. The DC-DC converter is connected to a high-potential wire of the main wiring, a low-potential wire of the main wiring, a high-potential wire of the subsidiary wiring, a low-potential wire of the subsidiary wiring, the high-potential wire of the high-voltage wiring and the low-potential wire of the high-voltage wiring. The controller is connected to the auxiliary battery and the DC-DC converter. The DC-DC converter is configured to supply a power stored in the smoothing capacitor to the controller through the DC-DC converter such that the controller drives the inverter circuit and that the power stored in the smoothing capacitor is supplied to the motor through the inverter circuit, when a collision of the vehicle is detected.

Vehicle to project concrete, including a truck provided with a main motor to move the truck using a movement unit, a unit to project the concrete equipped with a pumping device configured to feed the concrete along a pipe, where the vehicle includes a unit to generate and feed electric energy configured to selectively feed one or more of either the movement unit of the truck, the concrete projection unit and the pumping device.

An apparatus for controlling a driving mode of a hybrid vehicle and a method thereof are provided in which a specific cell, which constitutes a battery, is prevented from being overdischarged by adjusting a switching time point of a driving mode (an electric vehicle (EV) mode or a hybrid electric vehicle (HEV) mode) based on a cell voltage change of the battery mounted in the hybrid electric vehicle. The apparatus for controlling the driving mode of the hybrid vehicle includes a battery including a plurality of cells, a voltage sensor to measure voltages of the cells in the battery, and a controller to control a switching time point from the EV mode to the HEV mode based on the voltages of the cells in the battery, as measured by the voltage sensor.

An apparatus for controlling a driving mode of a hybrid vehicle and a method thereof are provided in which a specific cell, which constitutes a battery, is prevented from being overdischarged by adjusting a switching time point of a driving mode (an electric vehicle (EV) mode or a hybrid electric vehicle (HEV) mode) based on a cell voltage change of the battery mounted in the hybrid electric vehicle. The apparatus for controlling the driving mode of the hybrid vehicle includes a battery including a plurality of cells, a voltage sensor to measure voltages of the cells in the battery, and a controller to control a switching time point from the EV mode to the HEV mode based on the voltages of the cells in the battery, as measured by the voltage sensor.

An electronic control unit of a hybrid vehicle is configured to determine whether or not parking operation of the hybrid vehicle is being performed. The electronic control unit is configured to control the engine and the rotary electric machine such that starting the engine when the parking operation of the hybrid vehicle is being performed is harder than starting the engine when the parking operation of the hybrid vehicle is not being performed.

An electronic control unit of a hybrid vehicle is configured to determine whether or not parking operation of the hybrid vehicle is being performed. The electronic control unit is configured to control the engine and the rotary electric machine such that starting the engine when the parking operation of the hybrid vehicle is being performed is harder than starting the engine when the parking operation of the hybrid vehicle is not being performed.

The present invention relates to a ground compaction machine for compacting a ground, in particular a tandem roller, a single-drum roller, a rubber-wheeled roller or a trench roller, comprising a machine frame, at least one travel unit with a wheel or a roller drum, a travel drive for driving the travel unit, and a steering drive for adjusting the traveling direction of the ground compaction machine, the ground compaction machine comprising at least one electric motor. The present invention also relates to a method for operating a ground compaction machine.

An example assembly includes, among other things, a position indicator configured to be engaged with a service disconnect when the service disconnect is in a seated position, and to be disengaged from the service disconnect when the service disconnect is in an unseated position.

A utility vehicle with regenerative braking is disclosed. The utility vehicle includes a power bus, a battery coupled to the system power bus, and at least one electric drive motor to generate power through regenerative braking and supply the generated power onto the power bus. The utility vehicle includes a power regulation controller configured to direct the generated power to the battery to recharge the battery when the battery is not fully charged, direct the generated power to at least one power sink to consume the generated power when the battery is fully charged and the generated power is less than or equal to a power consumption limit, and reduce a maximum travel speed to reduce an amount of power generated by the at least one electric drive motor through regenerative braking when the battery is fully charged and the generated power is greater than the power consumption limit.