Shift control method for vehicle having DCT

摘要

A shift control method for a vehicle having a double clutch transmission may include determining whether or not a speed change may be between transmission gears which may be allocated to a same input shaft, determining whether or not a gear of the input shaft may be released, when the gear of the input shaft may be released, engaging working parts of a clutch of the input shaft with each other in a range before synchronization of a final target transmission gear starts.

主权项

1. A shift control method for a vehicle having a double clutch transmission, comprising:
determining whether or not a second kickdown is required during a first kickdown; determining whether or not a gear of an input shaft, working parts of a clutch of which are to disengage from each other during the first kickdown, is released when the second kickdown is required during the first kickdown as a result of determining whether or not the second kickdown is required during the first kickdown; when the gear is determined to be released as a result of determining whether or not the gear of the input shaft is released, operating the clutch of the input shaft, the gear of which has been released, in a direction in which the working parts of the clutch of the input shaft engage with each other; and disengaging the working parts of the clutch from each other when a speed of the input shaft becomes equal to a speed of a power generating unit which supplies power to the clutch or when a synchronization start point of a target transmission gear for the second kickdown has arrived as a result of operating the clutch of the input shaft.