US 12,409,832 B2
Hybrid electric vehicle and shift control method thereof
Sang Kook Woo, Seongnam-si (KR); Won Bin Lee, Suwon-si (KR); Soo Bang Lee, Suwon-si (KR); and Seul Gi Lee, Hwaseong-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. 12, 2022, as Appl. No. 17/942,794.
Claims priority of application No. 10-2022-0060175 (KR), filed on May 17, 2022.
Prior Publication US 2023/0373464 A1, Nov. 23, 2023
Int. Cl. B60W 20/20 (2016.01); B60W 20/30 (2016.01); B60W 20/40 (2016.01)
CPC B60W 20/20 (2013.01) [B60W 20/30 (2013.01); B60W 20/40 (2013.01); B60W 2510/0208 (2013.01); B60W 2510/0657 (2013.01); B60W 2510/1025 (2013.01); B60W 2710/083 (2013.01); B60W 2710/1022 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A hybrid electric vehicle comprising:
an engine;
a first motor connected to the engine;
an engine clutch;
a second motor selectively connected to the first motor through the engine clutch;
a transmission connected to the second motor;
a transmission controller configured to determine whether to shift the transmission; and
a hybrid controller configured to (i) compare a target torque reduction amount according to a shift signal received from the transmission controller with an intervention limit of the first motor and an intervention limit of the second motor based on the engine clutch being in a locked-up state, (ii) set torque reduction amounts of the engine, the first motor, and the second motor, respectively, based on the comparison result, and (iii) output a torque command for controlling the torques of the engine, the first motor, and the second motor, respectively, based on the set torque reduction amounts,
wherein the hybrid controller is configured to set an intervention control sequence by designating the first motor and the second motor as a higher priority control motor and a lower priority control motor.