| 摘要 |
The invention relates to an automatic transmission of a motor vehicle, comprising an input shaft, an output shaft, arranged coaxially to the input shaft, and a plurality of gears that can be selectively shifted via clutches associated therewith. The input shaft is connected to a driving engine via an engine clutch that can be engaged and disengaged. An additional controlled friction clutch is provided as the powershift clutch for optionally bridging at least one of the clutches. The aim of the invention is to improve a transmission of the aforementioned kind with regard to its performance and for retrofitting an existing transmission. According to the invention, the powershift clutch (K') is effective directly between the driving engine (M) and the output shaft (W2 or W5). For this purpose, the powershift clutch (K') is arranged on the input end of the clutch (1, 1') in coaxial relation to the engine clutch (K). The gear shafts (W1 or W1, W2, W4) arranged axially between the powershift clutch (K') and the output shaft (W2 or W5) are configured as hollow shafts. The output shaft (W2 or W5) is extended within said gear shafts (W1 or W1, W2, W4) up to the part of the powershift clutch (K') on the transmission end. |
