A clutch control device is provided for a four-wheel drive vehicle for transmitting drive force to the rear wheels. The clutch control device includes a dog clutch and a friction clutch, and a controller that controls the engagement and disengagement of the dog clutch and the friction clutch. In this clutch control device, the four-wheel drive hybrid vehicle includes a disconnected, two-wheel drive mode and a connected, four-wheel drive mode. When a driver's foot is lifted off an accelerator in a low-speed region when the connected, four-wheel drive mode is selected, the 4WD control unit maintains the connected, four-wheel drive mode while the brakes are not depressed, and shifts the mode to the disconnected, two-wheel drive mode when the brakes are depressed.

A power transmission device is provided to provide a 6 forward and 1 reverse transmission capable of smoothly performing 6 forward and 1 reverse or 4 forward and 1 reverse shifting. The power transmission device includes: a first shift input unit in which a reverse clutch and a first shift high clutch are provided at both ends and a first shift low gear is installed to be constrained by a first shift one-way gearing in one direction so that a driving force from a power input unit is transmitted thereto; a firs shift output unit to which a driving force from the first shift input unit is transmitted; a reverse input gear unit to which a reverse driving force from the first shift input unit is transmitted; a second shift input unit in which a second shift middle clutch is provided at one side end and a second shift low gear is installed to be constrained by a second shift one-way bearing in one direction so that a driving force from the first shift output unit is transmitted thereto; a forward idle gear unit connected to and installed at the first shift output unit and the second shift input unit to transmit a driving force from the first shift output unit to the second shift input unit; and a second shift output unit installed so that a reverse driving force by the reverse input gear unit and a forward driving force by the second shift input unit are transmitted thereto.

A power transmission device is provided to provide a 6 forward and 1 reverse transmission capable of smoothly performing 6 forward and 1 reverse or 4 forward and 1 reverse shifting. The power transmission device includes: a first shift input unit in which a reverse clutch and a first shift high clutch are provided at both ends and a first shift low gear is installed to be constrained by a first shift one-way gearing in one direction so that a driving force from a power input unit is transmitted thereto; a firs shift output unit to which a driving force from the first shift input unit is transmitted; a reverse input gear unit to which a reverse driving force from the first shift input unit is transmitted; a second shift input unit in which a second shift middle clutch is provided at one side end and a second shift low gear is installed to be constrained by a second shift one-way bearing in one direction so that a driving force from the first shift output unit is transmitted thereto; a forward idle gear unit connected to and installed at the first shift output unit and the second shift input unit to transmit a driving force from the first shift output unit to the second shift input unit; and a second shift output unit installed so that a reverse driving force by the reverse input gear unit and a forward driving force by the second shift input unit are transmitted thereto.

An exemplary shift lever includes a mounting assembly, a flexible member coupled to the mounting assembly, and an interface coupled to the flexible member. The flexible member is resilient so as to provide a selected biasing force at a predetermined deformation angle, and flexible enough to elastically deform across a selected angular range. The mounting assembly is configured for connection with the input shaft of a transmission, and the interface is configured for connection with an output of a drive selector.

An exemplary shift lever includes a mounting assembly, a flexible member coupled to the mounting assembly, and an interface coupled to the flexible member. The flexible member is resilient so as to provide a selected biasing force at a predetermined deformation angle, and flexible enough to elastically deform across a selected angular range. The mounting assembly is configured for connection with the input shaft of a transmission, and the interface is configured for connection with an output of a drive selector.

An in-vehicle control apparatus is configured to execute a collision degree calculation process of, when it is determined that gear rattle occurs, calculating a collision degree that indicates a magnitude of a collision between a sleeve chamfer and a gear chamfer based on a rotation speed difference between a sleeve and an idler gear, execute an index value calculation process of calculating an index value that correlates with wear and tear of the sleeve chamfer and the gear chamfer based on the collision degree that is calculated each time it is determined that gear rattle occurs, and execute a wear and tear degree calculation process of calculating a degree of wear and tear of the sleeve chamfer and the gear chamfer by integrating the index value that is calculated each time it is determined that gear rattle occurs.

A kit of parts includes a ceramic element comprising a cylindrical bore having at least one recess, and a rod comprising an outer tube comprising a jutting portion adjacent to an insert portion. An outer tube wall mates with the cylindrical ceramic bore. An outer tube bore comprises a cylindrical portion. An outer tube projecting member is insertable into a recess in the cylindrical bore. An inner mandrel insertable into the outer bore stabilizes a projecting member in a recess to couple the rod to the ceramic element.

An electric powertrain includes a first electric motor that has an uninterrupted connection with a drive shaft of a vehicle. The electric powertrain further includes a second electric motor that has an interruptible connection with the drive shaft. In one form, this interruptible connection includes a clutch. The electric powertrain further includes a first gear train in the form of a first planetary gear and a second gear train in the form of a second planetary gear. The clutch in one variation includes a positive clutch in the form of a dog clutch. The dog clutch has a clutch suspension configured to deflect a clutch collar when gearing is misaligned during shifting.

An electric powertrain includes a first electric motor that has an uninterrupted connection with a drive shaft of a vehicle. The electric powertrain further includes a second electric motor that has an interruptible connection with the drive shaft. In one form, this interruptible connection includes a clutch. The electric powertrain further includes a first gear train in the form of a first planetary gear and a second gear train in the form of a second planetary gear. The clutch in one variation includes a positive clutch in the form of a dog clutch. The dog clutch has a clutch suspension configured to deflect a clutch collar when gearing is misaligned during shifting.

The present disclosure discloses a vehicle two-power-source dual driving assembly, wherein, the vehicle two-power-source dual driving assembly comprises two sets of driving units that are symmetrically arranged, the two sets of driving units connect to a same set of vehicle axle half shafts, each of the sets of driving units is provided with a power source and an automatic transmission, and each of the automatic transmissions connects to one of the vehicle axle half shafts. The automatic transmission is provided therein with an input shaft, an intermediate shaft and an output shaft that are parallel, the input shaft, the intermediate shaft and the output shaft are provided thereon with multistage gears with different transmission ratios, the power source connects to the input shaft, and the output shaft connects to a left half shaft or a right half shaft of the vehicle axle half shaft. The present disclosure can realize transmission of two speed ratios, with flexible transmission modes, which shortens the axial size of the driving assembly, which cannot only satisfy the acceleration capability and climbing ability of the vehicle but also satisfy the demand on high vehicle speed.