Transmission system, especially for automobile vehicles, with wide torque and speed range

摘要

PCT No. PCT/FR85/00179 Sec. 371 Date Feb. 28, 1986 Sec. 102(e) Date Feb. 28, 1986 PCT Filed Jul. 1, 1985 PCT Pub. No. WO86/00676 PCT Pub. Date Jan. 30, 1986.The transmission system especially for automobile vehicles comprises an input gearbox (P) and a main gearbox (B) disposed between an input shaft (E) and an output shaft (S) and interconnected by an intermediate shaft (M). The transmission system comprises a series of numerous progressively distribution forward running ratios and a simple control system. Reverse running is obtained by means of the input gearbox (P), which enables gear ratios of the same order to be obtained in reverse running as in forward running and further provides a supplementary forward running ratio at the top of the series of ratios. A gearing down mechanism (TL) may be added to the main gearbox (B) to widen the range of transmission ratios in both directions.