US 12,415,413 B2
Three speed planetary transmission
Isaac Mock, Martinsville, IN (US); and Joel E. Mowatt, Carmel, IN (US)
Assigned to Allison Transmission, Inc., Indianapolis, IN (US)
Filed by Allison Transmission, Inc., Indianapolis, IN (US)
Filed on Nov. 30, 2022, as Appl. No. 18/071,704.
Prior Publication US 2024/0174071 A1, May 30, 2024
Int. Cl. B60K 6/365 (2007.10); F16H 3/66 (2006.01)
CPC B60K 6/365 (2013.01) [F16H 3/66 (2013.01); F16H 2200/0039 (2013.01); F16H 2200/0091 (2013.01); F16H 2200/2007 (2013.01); F16H 2200/2038 (2013.01); F16H 2200/2064 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A drive system, comprising:
a first and a second planetary gearset having a sun gear, a carrier with planetary gears, and a ring gear, wherein the carrier of the first planetary gearset is coupled to the sun gear of the second planetary gearset, and wherein the ring gear of the first planetary gearset is coupled to the carrier of the second planetary gearset;
a first clutch operable to selectively couple an input shaft to the carrier of the first planetary gearset, and the sun gear of the second planetary gearset;
a second clutch operable to selectively couple the sun gear of the first planetary gearset to the input shaft; and
a brake operable to selectively couple the ring gear of the second planetary gearset to ground;
an electric motor coupled to the input shaft;
wherein the carrier of the second planetary gearset is coupled to an output shaft, wherein the first and second planetary gearsets are mounted upstream of the motor and;
wherein the output shaft and the input shaft are aligned on a common axis of rotation with a drive axle.