US 11,933,388 B2
Powershift transmission of a motor vehicle
Michael Haas, Hengersberg (DE); Martin Dankesreiter, Passau (DE); Thomas Oberbuchner, Passau (DE); Thomas Pauli, Passau (DE); and Stefan Igl, Vilshofen (DE)
Assigned to ZF Friedrichshafen AG, Friedrichshafen (DE)
Filed by ZF Friedrichshafen AG, Friedrichshafen (DE)
Filed on Oct. 28, 2022, as Appl. No. 18/050,495.
Claims priority of application No. 10 2021 212 363.5 (DE), filed on Nov. 3, 2021.
Prior Publication US 2023/0140641 A1, May 4, 2023
Int. Cl. F16H 3/00 (2006.01); F16H 3/085 (2006.01); F16H 3/093 (2006.01); F16H 63/30 (2006.01); F16H 3/08 (2006.01)
CPC F16H 3/006 (2013.01) [F16H 3/085 (2013.01); F16H 3/093 (2013.01); F16H 63/3026 (2013.01); F16H 63/3043 (2013.01); F16H 2003/0818 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A powershift transmission of a motor vehicle, comprising:
a split group having a plurality of powershift stage, an input shaft, and an output shaft, the input shaft configured to be rotatably driven by a drive shaft of a motorized drive and configured to transmit in a stepped-up manner to the output shaft of the split group a rotational movement corresponding to a selection of one of a plurality of powershiftable stage transmissions; and
a synchromesh transmission group having at least four gear stages configured to be rotatably driven by the output shaft of the split group via an intermediate group located therebetween and via an output shaft of the synchromesh transmission group and via the output shaft of the synchromesh transmission group an axle transmission of the motor vehicle can be rotatably driven
wherein the intermediate group has
a first switching element and a second switching element each having an output shaft, wherein the output shaft of the first switching element configured to be coupled by means of switchable clutches to a first idler or to a second idler, the first idler having a higher number of teeth of a high gear and the second idler having a lower number of teeth of a low gear,
wherein the output shaft of the second switching element is configured to be coupled by means of switchable clutches to a third idler or to a fourth idler, the third idler having a higher number of teeth of a high gear and the fourth idler having a lower number of teeth of a low gear,
a first output gear securely arranged on the output, shaft of the synchromesh transmission group and in which the first idler and the third idler engage,
a second output gear arranged on the output shaft of the synchromesh transmission group and in which the second idler and the fourth idler engage, and
wherein, when the second idler or the fourth idler is coupled by means of the switchable clutches, the second output gear is connectable in a rotationally secure manner to the output shaft of the synchromesh transmission group, and when the first idler or the third idler is coupled, the second output gear is decoupled by a switching apparatus from the output shaft of the synchromesh transmission group.