１つのタイヤの空気圧異常が車両挙動に及ぼす影響

抄録

In order to investigate traffic accidents caused by driving while the tire air pressure is low, we must know the effect of tire pressure on vehicle behavior. Many literatures show the effect of tire air pressure on rolling resistance and cornering force. However, there are few literatures showing the effect of only one underinflated tire on vehicle behavior. Therefore, we conducted experiments on a vehicle by changing the air pressure of only one tire. In the test, a full braking test and a cornering performance test were carried out using a compact car with an oblateness rate of 55% of the tire. As a result, it was confirmed that the stop distance becomes longer as the tire air pressure decreases. Moreover, it was confirmed that the tendency of understeer becomes stronger when the air pressure of the front wheels on the side opposite to the turning direction is decreasing.