| 摘要 |
PCT No. PCT/EP85/00436 Sec. 371 Date Feb. 26, 1986 Sec. 102(e) Date Feb. 26, 1986 PCT Filed Aug. 27, 1985 PCT Pub. No. WO86/01569 PCT Pub. Date Mar. 13, 1986.A shift gear, specifically for motor vehicles, has a main shaft (9) and an auxiliary shaft (8). Arranged on these shafts are several gear groups (56), (7); (14), (15); (16), (17), with two gears each being constantly in mesh. For shifting the gears, sliding sleeves (12), (13) are arranged on the main shaft (9), one of these sleeves at a time being positively couplable to one of the gears (56), (14), (16). To synchronize the sliding sleeve to be engaged, either a retarding device (20) or an accelerating device (46), (50) acts on the main shaft (9), depending on the direction of shift. A planetary gear train (50), which may be part of said accelerating device, has a gear component (22) which can be retarded by means of a friction brake (24) and forms a clutch device for interrupting the flow of power from an engine (51) to an output shaft (27). Serving also the starting, the clutch device is arranged on the transmission output. A shift clutch (29) is provided between the output shaft (27) and the brake rotor (24).
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