Actuating device in particular for shifting a gear box

摘要

The device acts upon two separate shift elements (42,44) with at least one first engagement region (50,52) each and has a drive shaft (10) driven bidirectionally by a motor (12), a control device (28) with a thread profile complementary to the first drive shaft's thread profile and a control element (30) rotating with the control device that positions a second engagement region (54) on the control device on at least one first engagement region of at least one shift element for one direction of the drive shaft. Rotation in the opposite direction causes the control element to control an axial displacement of the control device and hence actuation of the at least one shift element. Independent claims are also included for the following: (a) a motor vehicle gearbox with an inventive actuator (b) a vehicle drive train (c) a method of automated gear changing (d) and a method of automated friction clutch and gearbox control.