Faist V. Improvement of requirements to dynamic properties of motor cars

The thesis is devoted to the problems of technical level increase by means of demands improvement to dynamic properties of motor cars. Dependences for instant and cyclic efficiency of the vehicle that account for wheels rolling resistance, the rode grade, the air resistance as well as losses connected with the slipping of driving wheels and acceleration of rotating weights of the engine, transmission and wheels are obtained in the given work. The offered external acceleration characteristics of the vehicle allow to determine the maximum indicators of vehicle's dynamic properties that are the basic ones at qualimetry analysis carrying out. The dynamism factor offered as a dynamic properties criterion allows to carry out not only the vehicle's qualimetry, but also determine the trend of design development. The methods of theoretical and experimental determination are used by the machine-building plant of PANAV company (Czech Republic). At prognostication of perspectives of automobile production development and at elaboration of schemes for vehicles upgrading by the Institute of Machines and Systems of NAS of Ukraine and the Ministry of Industrial Policy of Ukraine, the concept of definition Rational power and dynamic indicators of the vehicle as well as the method of vehicle's dynamic parameters analysis were used.