US 12,409,838 B2
Hill stop control method and apparatus for four-wheel drive vehicle, and system and vehicle
Jian Wang, Baoding (CN)
Assigned to GREAT WALL MOTOR COMPANY LIMITED, Baoding (CN)
Appl. No. 18/681,880
Filed by GREAT WALL MOTOR COMPANY LIMITED, Baoding (CN)
PCT Filed Jun. 21, 2022, PCT No. PCT/CN2022/100092
§ 371(c)(1), (2) Date Feb. 7, 2024,
PCT Pub. No. WO2023/016092, PCT Pub. Date Feb. 16, 2023.
Claims priority of application No. 202110909179.2 (CN), filed on Aug. 9, 2021.
Prior Publication US 2024/0343252 A1, Oct. 17, 2024
Int. Cl. B60W 30/18 (2012.01); B60W 10/06 (2006.01)
CPC B60W 30/18118 (2013.01) [B60W 10/06 (2013.01); B60W 2540/12 (2013.01); B60W 2552/15 (2020.02)] 15 Claims
OG exemplary drawing
 
1. A hill stop control method for a four-wheel drive vehicle, comprising:
when it is determined that a vehicle is in a park brake state, acquiring a current parameter of the vehicle;
determining whether the vehicle is in a working condition of being prone to sliding according to the current parameter; and
when it is determined that the vehicle is in the working condition of being prone to sliding, controlling a mode switch of a transfer case to switch a current drive mode to a high-speed four-wheel drive mode or a low-speed drive mode.