US 12,428,051 B2
Steering assist device, steering assist method, and vehicle
Mitsuhiro Aso, Fujisawa (JP); and Yuuki Tenma, Fujisawa (JP)
Assigned to Isuzu Motors Limited, Yokohama (JP)
Appl. No. 18/702,041
Filed by Isuzu Motors Limited, Yokohama (JP)
PCT Filed Nov. 2, 2022, PCT No. PCT/JP2022/040980
§ 371(c)(1), (2) Date Apr. 17, 2024,
PCT Pub. No. WO2023/080155, PCT Pub. Date May 11, 2023.
Claims priority of application No. 2021-180249 (JP), filed on Nov. 4, 2021.
Prior Publication US 2025/0236331 A1, Jul. 24, 2025
Int. Cl. B62D 5/04 (2006.01)
CPC B62D 5/0463 (2013.01) 5 Claims
OG exemplary drawing
 
1. A steering assist apparatus for assisting in steering of a vehicle having a kingpin offset, the apparatus comprising:
a detection section that detects a steering angle of a steering wheel; and
an assist section that changes a travel torque based on an assist torque that, when the steering angle is greater than or equal to a threshold, increases as the steering angle increases and that, when the steering angle is less than the threshold, has a value less than or equal to a minimum value when the steering angle is greater than or equal to the threshold, wherein,
while the steering angle is increasing, the assist section decreases the travel torque of a first motor that drives an inner steerable wheel of the vehicle during a turn by an amount of the assist torque, and increases the travel torque of a second motor that drives an outer steerable wheel of the vehicle during a turn by the amount of the assist torque.