US 12,311,914 B2
Hybrid electric vehicle and a shift control method for same
Seul Gi Lee, Hwaseong-si (KR); Sang Kook Woo, Yongin-si (KR); Won Bin Lee, Suwon-si (KR); Soo Bang Lee, Suwon-si (KR); and Jae Myoung Pi, Suwon-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed on Sep. 14, 2022, as Appl. No. 17/944,576.
Claims priority of application No. 10-2022-0049894 (KR), filed on Apr. 22, 2022.
Prior Publication US 2023/0339450 A1, Oct. 26, 2023
Int. Cl. B60W 10/08 (2006.01); B60W 10/10 (2012.01); B60W 20/13 (2016.01)
CPC B60W 20/13 (2016.01) [B60W 10/08 (2013.01); B60W 10/10 (2013.01); B60W 2510/0208 (2013.01); B60W 2510/087 (2013.01); B60W 2510/1015 (2013.01); B60W 2510/244 (2013.01); B60W 2510/246 (2013.01); B60W 2710/083 (2013.01); B60W 2710/1011 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A shift control method of a hybrid electric vehicle, the method comprising:
determining a speed control torque based on a result of comparing a speed of an input end of a transmission with a target speed of the input end of the transmission according to a shift signal;
distributing the speed control torque to a second motor connected directly to the input end of the transmission; and
distributing a residual speed control torque to a first motor connected selectively to the second motor through an engine clutch based on whether the engine clutch is locked up when the speed control torque is greater than a charging limit torque of the second motor.