Baytsur M. The improvement of brake properties of automobiles of category N3 at their conversion

The Object of research: braking and working processes in brake control of trucks. Purpose of research: improvement of brake properties of automobiles of category N3 due to perfecting a method of a choice of distribution of brake forces between axes of the car and application of a hydraulic brake drive. Methods of research and equipment: methods of the of decision of the differential equations, methods of the theory of similarity, is probability-statistical methods, electric methods measurement of physical magnitudes are used. The theoretical and practical results: method of a choice of rational distribution of brake forces between the wheels in view of change of loading of the car and method of an estimation of power expenditures in a brake drive of the car are developed. Novelty: influence of sequence of blocking of wheels at braking of the three-axial car having an axle differential gear in a drive between intermediate and back axles, on his gear in a drive between intermediate and back axles,on his brake properties has been defined; influence of change of position of the car's center of gravity on a choice of rational distribution of brake forces between axes has been defined; influence of change of quantity axes of trucks on indexes of braking efficiency and estimation stability at braking has been defined. The extent of application: results of dissertational work are used by Institute of Machines and Systems of Department of Industrial Policy of Ukraine and National Academy of Sciences of Ukraine, Holding company "AutoKrAZ" and National enterprise of Department of Defense of Ukraine the "Kharkov automobile repair factory-110 ". Field of usage: automobile industry.