DUAL CLUTCH TRANSMISSION FOR VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide a dual clutch transmission for a vehicle, which optimizes an execution timing of a pre-shift operation according to variable factors such as temperatures and the like that determine the friction inside the transmission to maintain or improve drivability (easiness of driving, operability).

SOLUTION: The dual clutch transmission for a vehicle includes: first and second clutches; a first input shaft; a second input shaft; an output shaft; a first gear shifting mechanism provided between the first input shaft and the output shaft; a second gear shifting mechanism provided between the second input shaft and the output shaft; and a control unit. The control unit includes: a gear shift stage selecting means; a gear shift executing means; a pre-shift adjusting means for detecting a variable factor causing an influence on a pre-shift operation time tp2 to obtain an advancement adjustment amount (vehicle speed variation ▵ω3) for advancing an execution timing of a pre-shift operation (P2 point) so as to be variable; a pre-shift selecting means for selecting a pre-shift gear shift stage that is estimated to be optimal for the next stage according to the advancement adjustment amount; and a pre-shift executing means.

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