US 11,674,579 B2
Planetary gear train automatic limited slip differential
Yurong Chen, Shiyan (CN); Shenghuai Wang, Shiyan (CN); Aihong Gong, Shiyan (CN); Zhen Wang, Shiyan (CN); Xueliang Zhou, Shiyan (CN); Wen Cheng, Shiyan (CN); Aihua Ren, Shiyan (CN); Zhangdong Sun, Shiyan (CN); Hongxia Wang, Shiyan (CN); Weidong Yan, Shiyan (CN); Qiang Liu, Shiyan (CN); Guoxing Sun, Shiyan (CN); Chunlong Zou, Shiyan (CN); Junjie Liu, Shiyan (CN); Tao Chen, Shiyan (CN); Shuo Cheng, Shiyan (CN); Yu Wang, Shiyan (CN); Wenlong Jia, Shiyan (CN); Suiyu Yin, Shiyan (CN); Longyong Gan, Shiyan (CN); and Rengan Wei, Shiyan (CN)
Assigned to Hubei University of Automotive Technology, Shiyan (CN)
Filed by Hubei University of Automotive Technology, Shiyan (CN)
Filed on Oct. 13, 2022, as Appl. No. 18/46,336.
Claims priority of application No. 202111195933.7 (CN), filed on Oct. 14, 2021.
Prior Publication US 2023/0124568 A1, Apr. 20, 2023
Int. Cl. F16H 48/20 (2012.01); F16H 48/24 (2006.01); F16H 57/08 (2006.01); F16H 48/06 (2006.01)
CPC F16H 48/24 (2013.01) [F16H 48/06 (2013.01); F16H 57/082 (2013.01); F16H 48/20 (2013.01); F16H 2048/204 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A planetary gear train automatic limited slip differential, consisting of a main differential, a planetary gear train differential controller, a left axle shaft, a right axle shaft, and a clutch;
wherein the planetary gear train differential controller is composed of a first planetary gear train differential controller unit and a second planetary gear train differential controller unit;
the first planetary gear train differential controller unit being composed of a first planetary gear train and a first overrunning clutch connected to the first planetary gear train, and the second planetary gear train differential controller unit being composed of a second planetary gear train and a second overrunning clutch connected to the second planetary gear train;
the planetary gear train differential controller being arranged at the right axle shaft at the right side of the main differential;
the clutch being composed of a left clutch and a right clutch, and the left clutch and the right clutch are coupled together by jaws or disengaged from each other;
an inner ring of each of the first overrunning clutch and the second overrunning clutch and the left clutch being connected into a whole by splines, and the right clutch and the right axle shaft are connected together by a spline;
wherein the first planetary gear train differential controller unit is configured to control a rotational speed of a right wheel to be not lower than a set minimum rotational speed nmin, and the second planetary differential controller unit is configured to control a rotational speed of the right wheel to be not higher than a set maximum rotational speed nmax;
the first planetary gear train including a first support, a first large sun gear, a first planetary gear, a first small sun gear, and a first planet carrier;
the second planetary gear train including a second support, a second large sun gear, a second planetary gear, a second small sun gear, and a second planet carrier;
wherein the first large sun gear and the first support are connected together by a bolt;
wherein the first support is connected to a main differential mechanism housing by a bolt;
wherein the first small sun gear is fixed to an axle housing by a bolt;
wherein the first planet carrier and the second planet carrier are connected into a whole by a spline hollow shaft;
wherein the second planet carrier and an outer ring of the first overrunning clutch are connected into a whole by a bolt;
wherein the inner ring of the first overrunning clutch and an input end of the clutch are connected together by a spline so as to control the rotational speed of the right wheel to be not lower than the set minimum rotational speed nmin;
wherein the second small sun gear is fixed to the axle housing by a bolt;
wherein the second large sun gear and the second support are connected together by a bolt;
wherein the second support and an outer ring of the second overrunning clutch are connected into a whole by a bolt; and
wherein the inner ring of the second overrunning clutch and the input end of the clutch are connected together by a spline so as to control the rotational speed of the right wheel to be not higher than the set maximum rotational speed nmax.