Patent attributes
A twin clutch gear transmission for a vehicle is provided for improving speed change control. The twin clutch gear transmission includes an even-numbered-gear-change gear transmission mechanism having a plurality of even-numbered gear-change gear trains which can be selectively established, and an odd-numbered-gear-change gear transmission mechanism having a plurality of odd-numbered gear-change gear trains which can be selectively established. The pair of clutches are capable of individually changing over the disconnection and the connection of power transmission between input shafts, which both gear transmission mechanisms include respectively, and a power source.