RESEARCH OF THE EFFICIENCY OF CAR BRAKING UNDER DIFFERENT LOADS

Abstract

The article analyses car braking parameters under different loads, evaluating the values of deceleration and wheel braking forces, which were obtained during two separate tests. Both tests were carried out by simulating different numbers of passengers and their arrangement in the automobile. In the first, the measurement of the braking force of the automobile's tires was carried out, and in the second, extreme braking in real conditions. From the results of the car tire braking force tests, it was found that reducing the tire pressure reduces the braking force of the tires and, at the same time, the braking efficiency. Changing the number of passengers in the car has the greatest influence on the braking performance of the rear tires: the largest changes were obtained in the rear left wheel in the range of 4.63 %, the smallest in the front right wheel in the range of 0,58 %, at 3 bar tire pressure. In the extreme braking test, the lowest and highest lateral acceleration values were obtained with the maximum number of passengers in the car, 9,18 m/s² and 1,01 m/s², respectively, which suggests that braking is the least stable and effective.