In a hybrid vehicle, when the engine is started and caused to make a transition from a stopped state into an operating state, the control device performs an operation control of the rotary machine and an output control of the engine to increase the rotation speed of the engine so that the rotation speed reaches a target rotation speed after the transition of the engine into the operating state, determined by the shifting control, and during increasing the rotation speed, when suppression conditions further including a condition that a vehicle speed is equal to or lower than a predetermined vehicle speed, and a condition that an output request amount by a driver is smaller than a predetermined output request amount, are satisfied, the control device suppresses an increase rate of the rotation speed until a predetermined time elapses from an initiation of starting of the engine are not satisfied.

In a hybrid vehicle, when the engine is started and caused to make a transition from a stopped state into an operating state, the control device performs an operation control of the rotary machine and an output control of the engine to increase the rotation speed of the engine so that the rotation speed reaches a target rotation speed after the transition of the engine into the operating state, determined by the shifting control, and during increasing the rotation speed, when suppression conditions further including a condition that a vehicle speed is equal to or lower than a predetermined vehicle speed, and a condition that an output request amount by a driver is smaller than a predetermined output request amount, are satisfied, the control device suppresses an increase rate of the rotation speed until a predetermined time elapses from an initiation of starting of the engine are not satisfied.

A method for controlling the power available on the electric traction chain of a powertrain (GMP) consisting of a heat engine that can transmit the torque from same to the wheels at different transmission ratios, a first electric machine (ME), a second electric machine (HSG) linked alternately to the input shafts of the heat engine or of the first electric machine (ME) in the powertrain (GMP), and a battery supplying power to the electric machines, characterised in that the supply voltage of the electric machines is established by a DC/DC voltage converter (13) arranged between the terminals of the battery and those of the electric machines, capable of imposing on them a voltage equal to that of the battery (Ubat), or indeed a voltage (Udc) higher than same.

A method for controlling the power available on the electric traction chain of a powertrain (GMP) consisting of a heat engine that can transmit the torque from same to the wheels at different transmission ratios, a first electric machine (ME), a second electric machine (HSG) linked alternately to the input shafts of the heat engine or of the first electric machine (ME) in the powertrain (GMP), and a battery supplying power to the electric machines, characterised in that the supply voltage of the electric machines is established by a DC/DC voltage converter (13) arranged between the terminals of the battery and those of the electric machines, capable of imposing on them a voltage equal to that of the battery (Ubat), or indeed a voltage (Udc) higher than same.

A power transmission device includes an input shaft, an output shaft, a differential device, a continuously variable transmission unit, and a control device. The differential device includes a first rotation element connected to the input shaft, a second rotation element connected to the output shaft, and a third rotation element. The continuously variable transmission unit includes a conversion unit configured to convert rotational power of the third rotation element into an other power, and a reconversion unit configured to reconvert the converted other power into the rotational power and supply the reconverted rotational power to the output shaft. The control device includes a continuously variable transmission control unit configured to generate a control signal of the continuously variable transmission unit such that the other power generated by the conversion unit exceeds the other power input to the reconversion unit.

A hydraulic fracturing system is disclosed as including a singular mobile platform of at least one mobile power unit (MPU) and at least one first switch gear that is configured to handle electric power from the MPU. The MPU is configured to generate voltage that matches the requirements of an electrical bus from the at least one switch gear such that a combined electrical current generated as a result of the generated voltage is provided to the electrical bus to the components of the hydraulic fracturing system. Further, the hydraulic fracturing system may include electrical fracturing equipment with at least one second switch gear to support the at least one first switch gear in handling electric power from the MPU. A datavan may be included in the system to control load shedding, load sharing, and power distribution for the electrical fracturing equipment comprising the at least one second switch gear.

A hydraulic fracturing system is disclosed as including a singular mobile platform of at least one mobile power unit (MPU) and at least one first switch gear that is configured to handle electric power from the MPU. The MPU is configured to generate voltage that matches the requirements of an electrical bus from the at least one switch gear such that a combined electrical current generated as a result of the generated voltage is provided to the electrical bus to the components of the hydraulic fracturing system. Further, the hydraulic fracturing system may include electrical fracturing equipment with at least one second switch gear to support the at least one first switch gear in handling electric power from the MPU. A datavan may be included in the system to control load shedding, load sharing, and power distribution for the electrical fracturing equipment comprising the at least one second switch gear.

A power-split gearbox device in an agricultural work vehicle. The gearbox device includes a compounded gearbox, an electrical variator for the continuous varying of a ratio of the compounded gearbox, and a gearbox with an adjustable ratio to connect a drive motor with a propulsion of the work vehicle.

A power-split gearbox device in an agricultural work vehicle. The gearbox device includes a compounded gearbox, an electrical variator for the continuous varying of a ratio of the compounded gearbox, and a gearbox with an adjustable ratio to connect a drive motor with a propulsion of the work vehicle.

Systems and methods for operating a vehicle that includes a continuously variable transmission are described. The systems and methods adjust engine speed according to one of a plurality of engine speed to vehicle speed profiles so that driveline noise, vibration, and harshness may be reduced. The different engine speed to vehicle speed profiles provide different levels of engine braking.