A hybrid powertrain for a vehicle includes a first input shaft connected to an engine, a second input shaft connected to the engine and coaxially mounted with the first input shaft, a motor input shaft coaxially mounted with the first input shaft and connected to a motor, first and second output shafts mounted in parallel to the first input shaft and the second input shaft, first and second drive gears connected to the motor input shaft, a first driven gear engaged with the first drive gear, a second driven gear engaged with the second drive gear, a complex synchronizer to couple and separate the first input shaft and the motor input shaft and to couple and separate the first drive gear and the motor input shaft, a third clutch to couple and separate the second drive gear and the motor input shaft, and a plurality of external gear pairs configured to respectively define different gear ratios.

An electric drive unit clutch for an automobile includes a first rotatable shaft, a one-way clutch fixedly mounted onto the first rotatable shaft, a dog clutch slidingly mounted onto the first rotatable shaft and adapted to rotate with the first rotatable shaft, a clutch ring positioned between the one-way clutch and the dog clutch, and a second rotatable shaft rotatable engaged with the clutch ring, wherein the clutch ring is adapted to transfer rotational motion from the second rotatable shaft through the one-way clutch and the dog clutch to the first rotatable shaft.

A fire fighting vehicle includes a chassis, a front axle, a rear axle, an engine, a battery system, an electromagnetic device, an accessory drive, and a controller. The accessory drive is positioned to receive a mechanical input from the engine and the electromagnetic device. The controller is configured to selectively engage a plurality of operational modes including a standby mode and a hybrid mode. According to the standby mode, the controller is configured to operate the electromagnetic device using stored energy stored in the battery system to drive the accessory drive with the engine off. According to the hybrid mode, the controller is configured to operate both the engine and the electromagnetic device.

A fire fighting vehicle includes a chassis, a front axle, a rear axle, an engine, a battery system, an electromagnetic device, an accessory drive, and a controller. The accessory drive is positioned to receive a mechanical input from the engine and the electromagnetic device. The controller is configured to selectively engage a plurality of operational modes including a standby mode and a hybrid mode. According to the standby mode, the controller is configured to operate the electromagnetic device using stored energy stored in the battery system to drive the accessory drive with the engine off. According to the hybrid mode, the controller is configured to operate both the engine and the electromagnetic device.

Provided is a structure for lubricating a clutch, the structure including: an oil capturing groove provided along an inner circumference of a ring gear at one side of a pinion gear; and an oil hole connected to an inside of a clutch hub through the oil capturing groove.

A hybrid transmission device (3) with a first transmission input shaft (7), a second transmission input shaft (9) mounted on the first transmission input shaft, at least one electric motor (EM1, EM2), and a clutch (K2) for connecting the second transmission input shaft (9) to an internal combustion engine (2). A connecting clutch (K3) is configured for forming a rotationally fixed connection of the first transmission input shaft (7) and the second transmission input shaft (9).

A hybrid transmission device (3) with a first transmission input shaft (7), a second transmission input shaft (9) mounted on the first transmission input shaft, at least one electric motor (EM1, EM2), and a clutch (K2) for connecting the second transmission input shaft (9) to an internal combustion engine (2). A connecting clutch (K3) is configured for forming a rotationally fixed connection of the first transmission input shaft (7) and the second transmission input shaft (9).

A powertrain including an engine; a main drive shaft assembly; a primary clutch mechanism coupled to the engine and the a main drive shaft assembly, the primary clutch mechanism being operable to connect or disconnect the main drive shaft assembly and the engine; an axle shaft coupled transversely to the main drive shaft assembly; a secondary clutch mechanism having a driving member coupled to an end of the axle shaft; a drive wheel coupled to a first driven member of the secondary clutch mechanism; and an air propulsion unit coupled to a second driven member of the secondary clutch mechanism. The secondary clutch mechanism being operable to engage or disengage the first driven member and/or the second driven member to the driving member so as to connect or disconnect the drive wheel and/or the air propulsion unit to the axle shaft. A vehicle including the powertrain.

A powertrain including an engine; a main drive shaft assembly; a primary clutch mechanism coupled to the engine and the a main drive shaft assembly, the primary clutch mechanism being operable to connect or disconnect the main drive shaft assembly and the engine; an axle shaft coupled transversely to the main drive shaft assembly; a secondary clutch mechanism having a driving member coupled to an end of the axle shaft; a drive wheel coupled to a first driven member of the secondary clutch mechanism; and an air propulsion unit coupled to a second driven member of the secondary clutch mechanism. The secondary clutch mechanism being operable to engage or disengage the first driven member and/or the second driven member to the driving member so as to connect or disconnect the drive wheel and/or the air propulsion unit to the axle shaft. A vehicle including the powertrain.

A hybrid power system and an operating method, a torque distribution method and a gear shifting control method of the same. A transmission of the hybrid power system employs two independent input shafts and two motors which are in transmission connection with the two input shafts respectively, and an engine is in transmission connection with one of the two motors via a clutch. In this way, in one aspect, a torque compensation can be constantly carried out in a gear shift process of the hybrid power system, thereby avoiding a torque interruption phenomenon for the hybrid power system in the gear shift process; in the other aspect, the hybrid power system can enable a serial mode in which one motor is driven by the engine to charge a battery while the other motor is driven to transmit torque to the transmission for driving.