Disclosed herein is gear actuator for dual clutch transmission, including: a driving motor having a driving shaft formed with gear part, a pair of first and second gears gear-coupled to the gear part, first and second guide cams respectively connected to the first and second gears to rotate, a first power transfer unit transferring or cutting off the power from the driving motor to the first guide cam according to rotating direction of the first gear, a second power transfer unit transferring or cutting off the power from the driving motor to the second guide cam according to rotating direction of the second gear, a first finger shaft linearly moved by rotation of the first guide cam and performing a selection operation of an odd-numbered stage, and a second finger shaft linearly moved by rotation of the second guide cam and performing a selection operation of an even-numbered stage.

A device (10) for axially moving a gearbox element (12), including: a shift drum (50) mounted rotatably about an axis of rotation (8) and having a shifting groove (62) formed in its outer casing at least partially circumferentially about the axis of rotation (8), which groove is axially inclinded (64) at least in some areas, a cage (30) holding the gear shift drum (50) with a cage wall (34) delimiting an inner cage space (48) against an outer cage space and a wall slot (70) extending axially through the cage wall (34) and opening the inner cage space (48) towards the outer cage space, a carriage (42) held axially movably between the gear shift drum (50) and the cage wall (34) in the area of the wall slot (70), and a shift fork (46) with two fork legs (80).

A device (10) for axially moving a gearbox element (12), including: a shift drum (50) mounted rotatably about an axis of rotation (8) and having a shifting groove (62) formed in its outer casing at least partially circumferentially about the axis of rotation (8), which groove is axially inclinded (64) at least in some areas, a cage (30) holding the gear shift drum (50) with a cage wall (34) delimiting an inner cage space (48) against an outer cage space and a wall slot (70) extending axially through the cage wall (34) and opening the inner cage space (48) towards the outer cage space, a carriage (42) held axially movably between the gear shift drum (50) and the cage wall (34) in the area of the wall slot (70), and a shift fork (46) with two fork legs (80).

An actuation device for actuating two clutches, including a first selector fork, which can be adjusted in a first direction of actuation for actuating a first clutch against a first restoring force, and a second selector fork which can be adjusted in a second direction of actuation for actuating a second clutch against a second restoring force, the first actuation device and the second actuation device being oriented in an opposed manner to each other. Furthermore, a hybrid transmission and a dual-clutch transmission having the actuation device are provided.

A method is provided for learning a neutral position of a gear shift actuator with a sliding gear movable between two opposed engaging pinions. The gear shift actuator has a control element that is position-regulated by a drive motor to acts on the slide gear. The slide gear has a spring that accumulates energy when the teeth of the sliding gear abut against the pinion to shift the gears and then restore this energy by relaxing to assist the engagement of the teeth of the sliding gear between the pinion. The method determines the neutral position of the actuator by identifying the positions of the control element at a time when the teeth of the sliding gear abut against the teeth of each of the two pinions by observing a resistant torque on the control element during movement of the sliding gear towards the pinions.

A method is provided for learning a neutral position of a gear shift actuator with a sliding gear movable between two opposed engaging pinions. The gear shift actuator has a control element that is position-regulated by a drive motor to acts on the slide gear. The slide gear has a spring that accumulates energy when the teeth of the sliding gear abut against the pinion to shift the gears and then restore this energy by relaxing to assist the engagement of the teeth of the sliding gear between the pinion. The method determines the neutral position of the actuator by identifying the positions of the control element at a time when the teeth of the sliding gear abut against the teeth of each of the two pinions by observing a resistant torque on the control element during movement of the sliding gear towards the pinions.

Disclosed herein is gear actuator for dual clutch transmission, including: a driving motor having a driving shaft formed with gear part, a pair of first and second gears gear-coupled to the gear part, first and second guide cams respectively connected to the first and second gears to rotate, a first power transfer unit transferring or cutting off the power from the driving motor to the first guide cam according to rotating direction of the first gear, a second power transfer unit transferring or cutting off the power from the driving motor to the second guide cam according to rotating direction of the second gear, a first finger shaft linearly moved by rotation of the first guide cam and performing a selection operation of an odd-numbered stage, and a second finger shaft linearly moved by rotation of the second guide cam and performing a selection operation of an even-numbered stage.

Disclosed herein is gear actuator for dual clutch transmission, including: a driving motor having a driving shaft formed with gear part, a pair of first and second gears gear-coupled to the gear part, first and second guide cams respectively connected to the first and second gears to rotate, a first power transfer unit transferring or cutting off the power from the driving motor to the first guide cam according to rotating direction of the first gear, a second power transfer unit transferring or cutting off the power from the driving motor to the second guide cam according to rotating direction of the second gear, a first finger shaft linearly moved by rotation of the first guide cam and performing a selection operation of an odd-numbered stage, and a second finger shaft linearly moved by rotation of the second guide cam and performing a selection operation of an even-numbered stage.

A unit includes a first planetary gear mechanism, a second planetary gear mechanism, a first engagement element connected to the first planetary gear mechanism, a second engagement element connected to the second planetary gear mechanism, and an actuator configured to drive at least one of the first engagement element and the second engagement element. The first engagement element has a portion overlapping the first planetary gear mechanism when viewed in a radial direction. The first engagement element has a portion overlapping the second planetary gear mechanism when viewed in the radial direction. The first planetary gear mechanism has a portion overlapping the second planetary gear mechanism when viewed in an axial direction. The actuator has a portion interposed between the first engagement element and the second engagement element.