Dual clutch powershifting transmission

摘要

A dual clutch transmission is provided with first and second coaxial input shafts, at least one mainshaft, and an output shaft that are coaxial with one another. The transmission has a countershaft offset from the first input shaft that supports seven countershaft gear elements drivably connected to respective gear elements on the first and second input shafts and the at least one mainshaft thereby forming seven forward gear meshes for the transmission. The seven forward gear meshes provide at least nine forward gear ratios for the transmission. The transmission is powershiftable between consecutive gear ratios of the at least nine gear ratios such that no torque interrupt occurs during sequential shifts.

主权项

1. A dual clutch transmission comprising: a first input shaft supporting a first headset gear element; a second input shaft concentric with the first input shaft and supporting a second and a third headset gear element; a first mainshaft coaxial with the first input shaft and supporting a first pair of gear elements; a second mainshaft coaxial with the first mainshaft and supporting a second pair of gear elements; a countershaft offset from the first input shaft and supporting seven countershaft gear elements drivably connected to respective gear elements on the first and second input shafts and the first and second mainshafts thereby forming seven forward gear meshes for the transmission; and an output shaft coaxial with and connected to the second mainshaft for rotation therewith; wherein the seven forward gear meshes provide at least nine forward gear ratios for the transmission; and wherein the transmission is powershiftable between consecutive gear ratios of the at least nine gear ratios such that no torque interrupt occurs during sequential shifts.