| 摘要 |
The transmission comprises: a first and a second input shaft (110, 112; 210; 310; 410, 412; 510, 512); a first and a second friction clutch (114, 116; 414, 416; 514, 516) associated, respectively, with the first and the second input shaft (110, 112; 210; 310; 410, 412; 510, 512); a first and a second output shaft (117, 119; 217, 219; 317, 319; 417, 419; 517, 519); a plurality of driving gear wheels (121-125; 221-225; 321-324; 421-425; 521-525) carried by the input shafts (110, 112; 210; 310; 410, 412; 510, 512); a plurality of driven gear wheels (131-136, 138; 231-236, 238; 331-336, 338; 431-438; 531-536, 538) carried by the output shafts (117, 119; 217, 219; 317, 319; 417, 419; 517, 519) and engaging with the driving gear wheels (121-125; 221-225; 321-324; 421-425; 521-525) to provide the transmission ratios associated with the different gears (I, II, III, IV, V, VI, R; I, II, III, IV, V, VI, VII, R); and a plurality of engagement sleeves (141-144; 241-244; 341-344; 441-444; 541, 544) operable selectively to engage a given gear. The driven gear wheel (136; 236; 336; 436; 536) associated with the sixth gear (VI) and the driven gear wheel (134; 234; 334; 434; 534) associated with the fourth gear (IV) engage with the same driving gear wheel (124; 224; 324; 424; 524) and are positioned on the side of the transmission facing the friction clutches (114, 116; 414, 416; 514, 516). The driving gear wheels (121; 221; 321; 421; 521) and driven gear wheels (131; 231; 331; 431; 531) associated with the first gear (I) are positioned on the side of the transmission axially opposite that of the gear wheels (IV, VI) of fourth and sixth gear. <IMAGE> |
