A shift range control device switches a shift range by controlling driving of a motor. A learning unit learns, as a position correction value, a normal state time correction value calculated based on first and/or second reference angles when an output shaft signal is available when turning on of a start switch. The first reference angle is a motor angle when the output shaft signal changes in response to the rotation of the motor in a first direction. The second reference angle is the motor angle when the output shaft signal changes in response to the motor rotation in a second direction opposite to the first direction. A motor angle target value is set by using the normal state time correction value stored during a period from when all the output shaft signals are determined to be unavailable to when the start switch is turned off.

A shift range control device switches a shift range by controlling driving of a motor. A learning unit learns, as a position correction value, a normal state time correction value calculated based on first and/or second reference angles when an output shaft signal is available when turning on of a start switch. The first reference angle is a motor angle when the output shaft signal changes in response to the rotation of the motor in a first direction. The second reference angle is the motor angle when the output shaft signal changes in response to the motor rotation in a second direction opposite to the first direction. A motor angle target value is set by using the normal state time correction value stored during a period from when all the output shaft signals are determined to be unavailable to when the start switch is turned off.

A transmission actuator, a transfer mechanism, a system, a transmission, a drivetrain and a vehicle includes a transmission gear change arrangement in which the actuating direction of the transmission actuator is inclined in relative to a transmission shaft axis by an angle.

A transmission actuator, a transfer mechanism, a system, a transmission, a drivetrain and a vehicle includes a transmission gear change arrangement in which the actuating direction of the transmission actuator is inclined in relative to a transmission shaft axis by an angle.

An actuator system for a vehicle transmission includes an actuating unit and an electric motor drivingly connected to the actuating unit. The actuating unit is configured for displacement by the electric motor between an engagement mode where the transmission is connected to a propulsion unit and a disengagement mode where the transmission is disconnected from the propulsion unit. A clutch unit between the actuating unit and the electric motor is connected to a drive shaft of the electric motor. The clutch unit is configured for connecting the actuating unit to the electric motor when displacing the actuating unit between the engagement disengagement modes. The clutch unit disconnects the actuating unit from the electric motor in the engagement mode. The system further includes an oil pump unit driven by the electric motor at least in the engagement mode.

A shifting mechanism that is downsized at least in an axial direction, and that can engage an engagement device without generating an engagement shock. The shifting mechanism comprises: a shift fork that reciprocates to engage and disengage the engagement device; and a drive mechanism that reciprocates the shift fork. The drive mechanism comprises: a movable member reciprocating in an axial direction with respect to the shift fork to apply the thrust force to the shift fork; and an elastic member interposed between the movable member and the shift fork. The shift fork is withdrawn from the movable member while compressing the elastic member when a force acting in a direction to prevent an engagement of the engagement mechanism is applied to the shift fork.

A shifting mechanism that is downsized at least in an axial direction, and that can engage an engagement device without generating an engagement shock. The shifting mechanism comprises: a shift fork that reciprocates to engage and disengage the engagement device; and a drive mechanism that reciprocates the shift fork. The drive mechanism comprises: a movable member reciprocating in an axial direction with respect to the shift fork to apply the thrust force to the shift fork; and an elastic member interposed between the movable member and the shift fork. The shift fork is withdrawn from the movable member while compressing the elastic member when a force acting in a direction to prevent an engagement of the engagement mechanism is applied to the shift fork.

Methods and systems are provided for an actuation system for a driveline shifting member in a transmission system of a vehicle. In one example, a system may include an actuator coupled to a lever arm via one or more parallel axis gears, and a shaft connecting the lever arm to a driveline shifting member, the lever arm driven via a rolling element housed within a slot in the lever arm aligned with a center of a parallel axis gear of the one or more parallel axis gears.

Methods and systems are provided for an actuation system for a driveline shifting member in a transmission system of a vehicle. In one example, a system may include an actuator coupled to a lever arm via one or more parallel axis gears, and a shaft connecting the lever arm to a driveline shifting member, the lever arm driven via a rolling element housed within a slot in the lever arm aligned with a center of a parallel axis gear of the one or more parallel axis gears.

A drive train, including: a first electric motor; a second electric motor; and a transmission system including a first input shaft driveably connected to the first electric motor, a second input shaft driveably connected to the second electric motor, a first gear train including a first gear element rotatably mounted on the first input shaft and a second gear element rotatably mounted on the second input shaft, a second gear train including a third gear element rotatably mounted on the first input shaft and a fourth gear element rotatably mounted on the second input shaft, a gear selector assembly arranged to selectively lock either the first and third gear elements for rotation with the first input shaft or the second and fourth gear elements for rotation with the second input shaft.