US 12,296,816 B2
Emergency operating system and method for hybrid vehicle with damaged bearing of engine
Jun-Ho Park, Seoul (KR); Sung-Woo Nam, Gunpo-si (KR); Pan-Sang Kim, Seoul (KR); Byng-Mo Jeon, Hwaseong-si (KR); Sang-Hyuk Mun, Hwaseong-si (KR); Seong-Wook Moon, Seoul (KR); Je-Ha Son, Suwon-si (KR); Young-Joon Park, Yongin-si (KR); Chan-Ki Min, Hwaseong-si (KR); Hye-Kil Hwang, Suwon-si (KR); Sung-Nam Baek, Seoul (KR); Chul-Ho Yu, Seoul (KR); and Hyung-Mook Yoon, Seongnam-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 Mar. 31, 2022, as Appl. No. 17/710,140.
Claims priority of application No. 10-2021-0072008 (KR), filed on Jun. 3, 2021.
Prior Publication US 2022/0388496 A1, Dec. 8, 2022
Int. Cl. B60W 20/50 (2016.01); B60K 6/26 (2007.10); B60W 10/02 (2006.01); B60W 10/06 (2006.01); B60W 10/08 (2006.01)
CPC B60W 20/50 (2013.01) [B60W 10/02 (2013.01); B60W 10/06 (2013.01); B60W 10/08 (2013.01); B60K 6/26 (2013.01); B60K 2006/268 (2013.01); B60W 2510/1005 (2013.01); B60W 2510/244 (2013.01); B60W 2520/04 (2013.01); B60W 2710/021 (2013.01); B60W 2710/06 (2013.01); B60W 2710/08 (2013.01); B60Y 2200/92 (2013.01)] 24 Claims
OG exemplary drawing
 
1. An emergency operating system for a hybrid vehicle, the emergency operating system comprising:
an engine;
a drive motor selectively connected to the engine by a clutch;
a hybrid starter and generator (HSG) configured to start the engine or configured to be operated by the engine to generate electric power; and
a controller configured to control driving of the hybrid vehicle,
wherein, in the emergency operating system of the hybrid vehicle, which controls the hybrid vehicle to be driven even when a bearing installed in the engine is damaged,
when a damage to the bearing is detected, the controller maintains driving of the engine in a preset limp-home mode, compares whether a state of charge (SOC) of a high voltage battery is greater than or equal to a first reference value which is preset to drive the hybrid vehicle using the engine, and stops driving of the drive motor and the HSG when the SOC is greater than or equal to the first reference value to control the hybrid vehicle in a first emergency operating mode in which the hybrid vehicle is driven using only a driving force of the engine,
when the SOC is not greater than or equal to the first reference value, the controller controls the hybrid vehicle in a second emergency operating mode in which the clutch is separated, the engine operates the HSG to generate the electric power, and the hybrid vehicle is driven by the drive motor, and
the controller controls the engine to be operated at an output that is lower than a maximum output of the limp-home mode and controls the engine to operate the HSG to generate the electric power.