F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
74/134
F16H 5/00 (1985.01)
Patent
CA 1212557
ABSTRACT OF THE DISCLOSURE A gear shifting device for semi or fully automatic shifting of multi-stage gear boxes with mechanical synchroni- zation, more particularly for automotive vehicles, with an elec- tric/electronic control part, gear shifting being initiated manually by means of a selector switch or being effected automatically by means of purely electrical control and actuating devices, or with actuating pistons, control valves or also solenoid valves for the purpose of moving the transmission and clutch parts to be displaced during a gear shift, whereby the range of automatic shifting provided is determined both up- wardly and downwardly, the said selector switch also comprising a locking means acting upon two selector levers and acting at all times through the gear actually engaged in automatic transmission, so that, when either selector lever is actuated, it is held in the gear engaged and actuation for servo manual shifting is possible only with the two selector levers guided in parallel. If the automatic transmission is designed for gears in the basic and group transmission, the selector switch also comprises an electrical switch by means of which, for example, the fast or slow split group can be selected or shifted, Locking of the gear may also be effected by means of a pressure switch preferably arranged in the vicinity of the accelerator pedal. The driver is thus able, at any time, to engage automatic gear shifting or to change from manual to automatic shifting.
445999
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Zahnradfabrik Friedrichshafen Ag
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