Motor vehicle stepped transmission
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 1, 2000
Grant Date -
N/A
app pub date -
Jan 22, 1999
filing date -
Jan 26, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A motor vehicle stepped transmission comprises a transmission input shaft ich is driven by an engine output shaft via a separating clutch. Further, it comprises a transmission output shaft arranged colinearly with the transmission input shaft. A countershaft is arranged parallel to the transmission output shaft. A plurality of gearwheel sets is provided for establishing forward and reverse gears within the transmission. A sub-plurality of the gearwheel sets each comprises a loose wheel. The loose wheels are rotatably arranged on a shaft and are adapted to be rigidly connected to the shaft by means of a gearshift clutch for shifting into one of a sub-plurality of the forward and reverse gears. Another of the gearwheel sets is associated to another of the forward and reverse gears and is adapted to be switched by means of a friction clutch. A toothed wheel within the other gearwheel set and associated to the other gear is arranged on an additional shaft extending parallel to the transmission output shaft. Means are provided for establishing a torque-transmitting connection from the engine output shaft to the other gearwheel set via the friction clutch. Thus, a gearshift jolt is reduced when shifting from one gear to another. The friction clutch is adapted to be closed when one of the gearshift clutches is activated.
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