| 摘要 |
A transmission for a motor vehicle comprises a multispeed change gear set comprising a plurality of loose spur gears and a plurality of fixed spur gears, each of which is permanently in mesh with one of the loose spur gears. The transmission comprises a second gear set, which is adapted to be selectively driven by the change gear set. The change gear set comprises an input shaft and two gear set output shafts. The loose spur gears for relatively low speeds are rotatably mounted on and adapted to be coupled to the first gear set output shaft. The loose spur gears for relatively high speeds are rotatably mounted on and adapted to be coupled to the second gear set output shaft. To simplify the structure and to reduce the overall size of the transmission in the direction of the input and output shafts, an additional spur gear is non-rotatably mounted on each gear set output shaft and is in mesh with a common idler gear, which is adapted to be coupled to a pinion, which is in mesh with a final output gear. The second gear set comprises a large spur gear and a small spur gear, which are adapted to be coupled to each other. The large spur gear is permanently in mesh with the additional spur gear mounted on the second gear set output shaft. The small spur gear is permanently in mesh with the final output gear. The two clutches between the idler gear and the pinion which is coaxial thereto and between the large and small spur gears can be engaged and disengaged only in mutually opposite senses. |
