Patent ID: 7211028

Claim:
A method of controlling a vehicle which includes a transmission having a twin clutch with a first friction clutch and a second friction clutch which transfer a torque of a driving force source for generating the driving force to a first input shaft and a second input shaft, respectively, a plurality of dog clutches which transfer the torque from the first input shaft to an output shaft, and a plurality of dog clutches which transfer the torque from the second input shaft to the output shaft, a shift clutch being formed by any of the dog clutches on said second input shaft, when the shift clutch is changed from a shift clutch formed by a dog clutch on said first input shaft to a shift clutch formed by another dog clutch on said first input shaft, comprising the steps of setting a target synchronous rotation speed based on a rotation speed of said output shaft and at least one of parameters indicative of the state of said driving force source and said transmission, and setting a command value to said second friction clutch so that the rotation speed of said second input shaft of said transmission may be synchronized with said target synchronous rotation speed, when the torque is transferred temporarily from said second input shaft to said output shaft by controlling said second friction clutch, further comprising the steps of setting a target required shift time based on at least one of parameters indicative of the state of said driving force source and said transmission, and correcting the command value to said second friction clutch so that the required shift time from a shifting start to a shifting end may approach at said target required shift time.