Zf Friedrichshafen Ag

Zahnradfabrik Friedrichshafen, Ag.

Michael Herlitzek

Jürgen Legner

Fritz Leber

Wolfgang Rebholz

Hugo Burkhart

Michael Riedhammer

Siegfried Stützle

Roland Fischer

Gerhard Buck

Jochen Schneider

Michael Thielmann

A shiftable multispeed reverse transmission having one input shaft () and a plurality of countershafts () and one output shaft (). One of gears and/or idle gears being situated upon the countershafts () for non-rotatably connection with the countershafts, via shiftable clutches, for gear and direction change. The reduction ratios being generated by spur pinion stages and at least one shiftable planetary stage (P).

Multispeed manual transmission

The invention concerns a gearbox (9). On the gearbox is front-mounted a hydrodynamic torque converter (3). The gearbox (9) has hydraulically actuatable gear clutches (17, 18, 23 and 28) which are designed structurally alike. The gears (14, 15, 16, 19, 20, 21, 22, 24, 26 and 27) are in constant engagement with each other. In order to reduce the development of noise, the gears are high and helically toothed. The gearbox is especially suited for use in vehicles in which special importance is attached to comfortable riding. Such vehicles are, for instance, passenger cars and mobile homes.

Gearbox

Growing community of inventors

Eriskirch, Germany

Michael Herlitzek