| 主权项 |
1. A dual-clutch transmission comprising:
a first input shaft provided with a first clutch that transmits or interrupts power from a driving source; a second input shaft provided with a second clutch that transmits or interrupts the power from the driving source; an output shaft disposed coaxially with the first input shaft; a countershaft disposed in parallel with the first input shaft, the second input shaft, and the output shaft; a first input gear pair including a first input primary gear fixed to the first input shaft, and a first input counter gear provided on the countershaft such that the first input counter gear is rotatable relative to the countershaft, the first input counter gear being configured to mesh with the first input primary gear; a second input gear pair including a second input primary gear fixed to the second input shaft, and a second input counter gear fixed to the countershaft, the second input counter gear being configured to mesh with the second input primary gear; a first speed-change gear pair including a first output primary gear provided on the output shaft such that the first output primary gear is rotatable relative to the output shaft, and a first output counter gear fixed to the countershaft, the first output counter gear being configured to mesh with the first output primary gear; a second speed-change gear pair including a second output primary gear provided on the output shaft such that the second output primary gear is rotatable relative to the output shaft, the second output primary gear being closer to an input end of the output shaft than the first output primary gear, and a second output counter gear configured to be integrally rotatable with the first input counter gear, the second output counter gear being configured to mesh with the second output primary gear; a third speed-change gear pair including a third output primary gear fixed to the output shaft at a position between the second output primary gear and the first output primary gear, and a third output counter gear provided on the countershaft such that the third output counter gear is rotatable relative to the countershaft, the third output counter gear being configured to mesh with the third output primary gear; a first connecting mechanism configured to selectively connect the first input primary gear or the second output primary gear to the output shaft; a second connecting mechanism configured to selectively connect the second output counter gear or the third output counter gear to the countershaft; and a third connecting mechanism configured to selectively connect at least the first output primary gear to the output shaft. |
