| 摘要 |
The invention is situated in the transmission domain, more particularly in automotive material. The gearbox according to the invention comprises as many lay shafts I1 and I2, as many clutches or couplers C1 and C2 and as many trains of constant engagement P1, A1 and P1, B1 as there are gear ratios. The uncoupling of A1 and A2 following the coupling of B1 and B2 produces a change in gear ratio. The gearbox represented in the figure comprises two speeds and only one running direction. <IMAGE>
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