US 11,052,750 B2
Power transmission system for hybrid electric vehicle
Seong Wook Hwang, Gunpo-si (KR); Seongwook Ji, Gunpo-si (KR); Ki Tae Kim, Incheon (KR); Chon Ok Kim, Yongin-si (KR); Soonki Eo, Ansan-si (KR); Wonmin Cho, Hwaseong-si (KR); Ilhan Yoo, Hwaseong-si (KR); Juhyeon Park, Gyeongsangnam-do (KR); Dongwoo Kim, Incheon (KR); Hye Jin Lim, Seoul (KR); Dong Hwan Hwang, Seoul (KR); and Jong Hyo Park, Ansan-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA MOTORS CORPORATION, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA MOTORS CORPORATION, Seoul (KR)
Filed on Feb. 28, 2020, as Appl. No. 16/804,451.
Claims priority of application No. 10-2019-0090443 (KR), filed on Jul. 25, 2019.
Prior Publication US 2021/0023931 A1, Jan. 28, 2021
Int. Cl. B60K 6/54 (2007.10); B60K 6/547 (2007.10); F16H 3/085 (2006.01); F16H 37/08 (2006.01); B60K 6/38 (2007.10)
CPC B60K 6/547 (2013.01) [F16H 3/085 (2013.01); F16H 37/0806 (2013.01); B60K 6/38 (2013.01); B60Y 2200/92 (2013.01); F16H 2200/0078 (2013.01); F16H 2200/0086 (2013.01); F16H 2702/04 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A power transmission apparatus for a hybrid electric vehicle using an engine and a motor/generator as power sources, the power transmission apparatus comprising:
a first input shaft disposed coaxial with an output shaft of the engine and selectively connected to a rotor of the motor/generator ;
a second input shaft formed as a hollow shaft, disposed coaxial with and external to the first input shaft, and selectively connected to the rotor;
an idle shaft disposed in parallel with the first input shaft;
an intermediate shaft disposed in parallel with the first input shaft and the idle shaft and configured to shift rotational power transmitted from the first input shaft to the idle shaft;
a first output shaft disposed in parallel with the second input shaft and the idle shaft, and configured to shift and output rotational power transmitted from the second input shaft and the idle shaft;
a second output shaft disposed in parallel with the first input shaft and configured to shift and output rotational power transmitted from the first input shaft; and
a plurality of gear sets disposed on the first and second input shafts, the idle shaft, the intermediate shaft, the first and second output shafts to shift the rotational power through the first and second input shafts.