Method for learning a touch point of a dual-clutch transmission

摘要

A method for learning a touch point of a clutch (CL2) in a dual-clutch transmission (DKG) vehicle includes: a synchronization determining step (S10), a driven input shaft slip applying step (S20) in which the control device (1) causes a Clutch (CL1) of the driven input shaft (INPUT1) has a non-driven input shaft torque applying step (S40) in which the control device (1) applies torque to a clutch (CL2) of the non-driven input shaft (INPUT2), and a A touch point learning step (S60) in which, while the number of revolutions of the non-driven input shaft (INPUT2) in the non-driven input shaft torque applying step (S40) follows the engine speed, the control device (1) searches for a particular point at which the Speed of the non - driven input shaft (INPUT2) varies and is different from the Dr the input input shaft (INPUT1) is different, and learns the point as the point of contact of the clutch (CL2) of the non-driven input shaft (INPUT2).