Turenko O. Increase of stability, controllability and functional stability for motor cars in service braking

New solutions for actual problems of determination the efficient distribution of braking forces between the axles of the vehicle, and the stability and drivability of two-axles vehicles at service braking are received in the thesis. It permitted for the first time to determine the Law of distribution the braking forces between the axles, that ensures straight-running stability of two-axle vehicle at service braking, to get the ideal characteristics for braking system of two-axle vehicle at service braking and to determine possible values for the distribution of braking force on the front axle. The drivability criterion at service braking obtained further development; it is offered to use boundary at gripping front or rear wheels angular vehicle acceleration on the road. The application of the stability coefficient as one of the criteria for service braking efficiency allowed to determine the ideal, as for preserving the road-holding ability, Law of distribution the braking forces between the axles. Despite of the idea, if increase the vehicle deceleration at service braking, the ideal coefficient of braking force distribution on the front axle should decrease, but not to increase. At small decelerations the given coefficient can be equal to one (rear wheels are not braked), and at the maximum decelerations - we should take into account the values that correspond to keeping the front and rear wheels on the blocking boundary.