The present invention provides a power split hybrid power system and a hybrid vehicle. The hybrid power system comprises two planetary gear mechanisms sharing planetary carriers and ring gears, two motors and one engine. An output shaft of the engine is in transmission connection with a first sun gear shaft of a first sun gear, an input/output shaft of a first motor is in transmission connection with a second sun gear shaft of a second sun gear, and an input/output shaft of a second motor is in transmission connection with the ring gears. The output shaft of the engine, the input/output shaft of the first motor and the input/output shaft of the second motor can be relatively fixed to a housing of a transmission through a braking mechanism. Therefore, the power split hybrid power system can guarantee that a vehicle reaches a high speed in a pure motor driving mode so as to complete New European Driving Cycle and World Light Vehicle Test Cycle; and the engine can also be shut down at a high vehicle speed, and the dynamic property is improved in a low-speed state.

A transmission structure of a hybrid electric vehicle (HEV) may include an engine connected to a front wheel of the hybrid vehicle, a planetary gear part connected to the engine, a first motor generator connected to the planetary gear part, an overdrive brake connected to the first motor generator, and a second motor generator connected to a rear wheel of the hybrid vehicle.

A vehicle power module assembly includes a modular manifold, an upper frame, and a plurality of power stages. The modular manifold includes a first base unit defining an inlet chamber, a second base unit defining an outlet chamber, a mid-unit defining one or more ports open to the chambers, and an upper unit defining a first set of slots and a second set of slots in fluid communication with the chambers via the ports. The plurality of power stages is housed within the frame and each of the power stages are spaced from one another to define inner channels therebetween. The chambers, channels, and ports are arranged with one another such that coolant flowing through the inner channels is in thermal communication with the power stages. The mid-unit may further include flow guides each sized to partially extend into one of the inner channels.

A transmission assembly for a work vehicle having an engine includes a variator operably connected to the engine, a gear arrangement configured to provide a selective gear reduction for transmission of output power from the variator to an output shaft, and an electrical machine unit. The electrical machine unit further includes a main shaft operably connected to the variator, a first rotor configured to rotatably drive a first shaft, a second rotor configured to rotatably drive a second shaft, and a clutch configured to selectively couple the first shaft or the second shaft, or both the first shaft and the second shaft, to the main shaft. The clutch, the first rotor, and the second rotor are operable to control a speed and rotational direction of the main shaft in providing rotational power to the variator.

A hybrid power driving system includes an engine, a planetary gear device, a first motor, a clutch gear device, a brake device, an engagement device, an intermediate shaft, and a second motor, the engine and the first motor are connected by the planetary gear device which includes first, second and third rotating elements; the clutch gear device is disposed between the first motor and the planetary gear device, the clutch gear device includes a clutch and a clutch gear and an engagement element connected to the clutch, the clutch gear is connected to the intermediate shaft; the engagement device is configured to engage the third rotating element and the engagement element, or engage the third rotating element and the brake device, or only engage the third rotating element; the brake device is configured to brake or unlock the third rotating element; the second motor is connected to the intermediate shaft.

A powertrain system is described, and includes an internal combustion engine and an electric machine configured to generate propulsion torque responsive to a driver torque request. A method for operating the powertrain system includes determining, in response to a request to execute an engine autostart operation, whether a driveline torque sag may occur. The method further includes forgoing executing the engine autostart operation when it is determined that a driveline torque sag will occur during the execution of the engine autostart operation.

A vehicle electric machine may include a rotor. The rotor may cooperate with a stator including a core having an end face, and end windings extending from the end face. A cooling tunnel may encase the end windings, sealing against the end face at opposing sides of the end windings, and defining an inlet configured to receive coolant. The cooling tunnel may be arranged to contain the coolant during passage over the end windings and direct the coolant toward an outlet.

A transmission system for a hybrid electric vehicle includes a planetary gear mechanism, a gear, a parking lock mechanism, and a resistance imposing device. A parking meshing member of the parking lock mechanism acts so as to switch between a first state where a claw is in mesh with a parking gear and a second state where the claw is out of mesh with the parking gear. The resistance imposing device includes a resistance imposing member configured to impose a rotational resistance on the parking gear or a third rotating element of the planetary gear by coming in contact with the parking gear or the third rotating element. The resistance imposing device is configured to operate the resistance imposing member such that a larger rotational resistance is imposed on the third rotating element in the first state than in the second state.

A power-split drive train having a main drive, three output shafts (Ab1, Ab2, Ab3) and a continuously variable powersplit transmission with three additional drive units. The transmission enables rotational speed variability at the shafts (Ab1, Ab2, Ab3). Furthermore, each drive unit (2a, 2b, 2c) has a respective energy converter (3a, 3b, 3c) which are all electrically connected. Drive unit (2a) has planetary gearset (4a) that is connected, via a first shaft (W1), to the main drive. Shaft (Ab1) is connected, via a second shaft (W2), to gearset (4a) and energy converter (3a) is connected, via a third shaft (W3), to gearset (4a). The drive unit (2a) is at least indirectly connected to drive unit (2b) which is connected by a fifth shaft (W5) to shaft (Ab2). Drive unit (2a) is at least indirectly connected to drive unit (2c) which is connected by a seventh shaft (W7) to shaft (Ab3).

A transmission (G) includes an input shaft (GW1), an output shaft (GW2), an electric machine (EM), a plurality of planetary gear sets (P1-P3; 2P1-2P5), and gear-implementing shift elements (S1-S6; 2S1-2S5). Via engagement of a first of the gear-implementing shift elements (S1, 2S1), which is a force-locking shift element having a variable torque transmission capacity, the input shaft (GW1) and an element (E1, 22E1) of one of the planetary gear sets (P3; 2P4) can be brought into a fixed rotational speed relationship with respect to each other. Another element (E2, 22E2a, 22E2b) of one of the planetary gear sets (P1, 2P3, 2P5) is permanently connected to a rotor (R) of the electric machine (EM). By engaging an auxiliary shift element (ZS, 2ZSa, 2ZSb), which is a form-locking shift element, the rotor (R) and the input shaft (GW1) can be brought into a fixed rotational speed relationship with respect to each other.