Patent ID: 7930086

Claim:
A shifting apparatus including a meshed gear transmission and a clutch that couples/decouples the meshed gear transmission to/from a power unit, wherein the meshed gear transmission includes an input shaft, an output shaft, and a synchronization mechanism, and wherein the shifting apparatus includes synchronization means, comprising: a controller configured to calculate a first synchronization period required for synchronization by the synchronization mechanism to mechanically synchronize a rotational speed of the input shaft with a rotational speed of the output shaft during shifting, the synchronization mechanism including a plurality of synchromesh mechanisms configured to couple the input shaft and output shaft to a plurality of clutch gears, the controller is configured to calculate a second synchronization period required for synchronization by the synchronization means to perform double clutch control by rendering the meshed gear transmission in a neutral state where the input shaft is mechanically decoupled from the output shaft, connecting the clutch, controlling an output rotational speed of the power unit, and synchronizing the rotational speed of the input shaft with the rotational speed of the output shaft, the controller is configured to compare the first synchronization period with the second synchronization period prior to a shift in the meshed gear transmission, and the controller is configured to shift the meshed gear transmission by synchronizing the rotational speed of the input shaft with the rotational speed of the output shaft by means of the synchronization mechanism without performing the double clutch control if the first synchronization period is shorter than the second synchronization period and that shifts the meshed gear transmission by synchronizing the rotational speed of the input shaft with the rotational speed of the output shaft by means of the synchronization means to perform the double clutch control if the second synchronization period is equal to or shorter than the first synchronization period.