US 7,500,933 B2
Transmission and drive train for a vehicle
Detlef Baasch, Friedrichshafen (Germany); Gerhard Gumpoltsberger, Friedrichshafen (Germany); Christoph Pelchen, Tettnang (Germany); Barbara Schmohl, Friedrichshafen (Germany); Ulrich Mair, Friedrichshafen (Germany); and Thomas Rosemeier, Meckenbeuren (Germany)
Assigned to ZF Friedrichshafen AG, Friedrichshafen (Germany)
Appl. No. 10/574,593
PCT Filed Oct. 14, 2004, PCT No. PCT/EP2004/011528
§ 371(c)(1), (2), (4) Date Apr. 04, 2006,
PCT Pub. No. WO2005/043008, PCT Pub. Date May 12, 2005.
Claims priority of application No. 103 48 960 (DE), filed on Oct. 22, 2003.
Prior Publication US 2007/0015618 A1, Jan. 18, 2007
Int. Cl. F16H 37/08 (2006.01); F16H 48/30 (2006.01); F16H 37/02 (2006.01)
U.S. Cl. 475—205  [475/150; 475/219] 3 Claims
OG exemplary drawing
 
1. A transmission (1) for distributing a drive torque to at least first and second drive output shafts (7, 8) with at least first and second planetary gearsets (2, 3) having at least first, second and third shafts such that a respective first shaft (4 or 5) of the first and the second planetary gearset (2 or 3) is drivingly coupled to a drive input shaft (6) and a respective second shaft of each planetary gearset (2 or 3) constitutes one of the first and the second drive output shafts (7 or 8), and the third shaft (9 or 10) of the first planetary gearset (2 or 3) is connected to the third shaft (10 or 9) of the second planetary gearset (3 or 2) by a controllable and regulated active connection (11):
wherein if a rotation speed difference occurs between the output shafts (7, 8), a first variable speed-difference-changing torque is applied by the active connection (11) to the third shaft (10 or 9) and a second variable speed-difference-changing torque is applied by the active connection (11) to the other third shaft (9 or 10) for varying a degree of distribution of the drive torque, between the first and the second output shafts (7 and 8) between an upper limit and a lower limit value by an adjustment of a transmission ratio of a continuously variable ratio device (36).