An apparatus and a method for controlling shifting of a vehicle are provided. The apparatus includes a transmission configured to transmit power generated from by a motor to a vehicle wheel, and a controller configured to control an operation of the transmission. The controller is configured to enter a LURCH control mode when sensing shifting of a shift lever between a D range and an R range during driving to maintain a clutch torque in the transmission, to decrease a vehicle speed by controlling a motor speed, and to shift a gear of the vehicle by changing a motor torque when the vehicle speed reaches a threshold speed.

A power extraction system for a gas turbine engine may comprise a low spool transmission and a low spool accessory gearbox. The low spool accessory gearbox may comprise a generator and a dual clutch transmission. The dual clutch transmission may be coupled between the low spool transmission and the generator.

A power transmission apparatus for an electric vehicle having a motor as a power source may include: first and second input shafts coaxially disposed with a motor shaft of the motor and selectively connected to the motor shaft; an output shaft disposed in parallel with the first and second input shafts; and a planetary gear set disposed on the output shaft and including: a rotation element fixedly connected to the output shaft, and two rotation elements receiving torques from the first and second input shafts through respective external gear sets.

An apparatus and a method for controlling shifting of a vehicle are provided. The apparatus includes a transmission configured to transmit power generated from by a motor to a vehicle wheel, and a controller configured to control an operation of the transmission. The controller is configured to enter a LURCH control mode when sensing shifting of a shift lever between a D range and an R range during driving to maintain a clutch torque in the transmission, to decrease a vehicle speed by controlling a motor speed, and to shift a gear of the vehicle by changing a motor torque when the vehicle speed reaches a threshold speed.

A power transmission apparatus for an electric vehicle having a motor as a power source may include: first and second input shafts coaxially disposed with a motor shaft of the motor and selectively connected to the motor shaft; an output shaft disposed in parallel with the first and second input shafts; and a planetary gear set disposed on the output shaft and including: a rotation element fixedly connected to the output shaft, and two rotation elements receiving torques from the first and second input shafts through respective external gear sets.

In a transmission device of a saddle riding vehicle arranged in the saddle riding vehicle, including a transmission and an actuator, the transmission including a shift drum, the shift drum rotating and changing shift position, the actuator rotatively driving the shift drum, and controlling the rotation angle of the shift drum by restricting rotation of the shift drum by cogging torque of the actuator, a pattern of an output of the actuator in changing the shift position by one stage is variable.

Methods and systems for operating a driveline that includes a dual clutch transmission are described. In one example, clutches of the dual clutch transmission may be cooled via activating and adjusting a flow rate of an electric pump. Further, driveline operating modes may be entered or exited in response to clutch operating conditions so that driveline robustness may be enhanced.

A speed change device for shifting the gear of a transmission. The transmission includes a first shifter shaft, a first shifter element associated to the first shifter shaft and arranged for movement in an axial direction of the first shifter shaft for actuating a first set of gears. It further comprises a second shifter shaft and a second shifter element associated to the second shifter shaft and arranged for movement in an axial direction of the second shifter shaft for actuating a second set of gears. One of said first and second shifter shafts is hollow and the other of said first and second shifter shafts is partly arranged coaxially inside the hollow shaft.

An actuator device for a gearbox of a motor vehicle includes a plurality of selector shafts displaceable in a first direction between a plurality of selection positions and in a second direction between a plurality of shifting positions and which each have a connecting element that is operatively-connected in at least one of the selection positions with at least one selector rail of the gearbox for transferring a movement of the selector shaft in the second direction onto the selector rail. The selector shafts are mounted relative to each other to be movable relative to one another in the first direction and are fixed to relative to each other in the section direction The selection positions of the selector shafts are independently adjustable by of a plurality of first adjusting elements and wherein the selector shafts can be displaced together between the shifting positions by means of a second adjusting element.

Disclosed herein is a gear actuator for a double clutch transmission, which includes a power module (100), including odd and even-numbered stage select solenoids and shift motors, a controller directly connected to them, and select levers connected to select rods of the select solenoids, shift modules (200) for transmitting the rotational forces of the shift motors to a control shaft assembly (300), the control shaft assembly (300) for transmitting the operating force of the power module (100) to a shift lug, and a body housing (400) having the power module (100), the shift modules (200), and the control shaft assembly (300) installed therein. Accordingly, the gear actuator can have a more compact structure and be easily assembled by modularization.