| 摘要 |
PROBLEM TO BE SOLVED: To provide a power steering device with an air pressure drop detecting function for a tire. SOLUTION: Reference steering torque predetermined corresponding to a steering angle an a speed is stored in a ROM 33. A CPU 31 reads the reference steering torque corresponding to a steering angle detection value and a speed detection value detected by a steering angle sensor 11 and a speed sensor 12, respectively, out of the ROM 33. The CPU 31 judges air pressure to be abnormal in a tire for one of front right and left wheels FL, LR when the steering torque detection value detected by a torque sensor 13 is kept greater than the reference steering torque for a preset time. |
