Study of the combined drive of the road train

Abstract

This article describes purpose, areas of application and main parameters of heavy road trains for the transportation of special and general cargo. Heavy-duty road trains with drive wheels of trailed links are considered. The advantages of using heavy-duty road trains in comparison with single trucks are shown. Additional energy sources for a standard engine (diesel or gas turbine engine for driving a three-phase generator), designed to overcome steep ascents and difficult road sections, are considered. The analysis of the turn of the road train is carried out. The advantages of ring and parallel circuit with individual control are shown. The analysis of the traction forces on the wheels and the spread of losses when turning the road train in a multi-engine drive are made. The traction and dynamic properties of road trains are presented. They characterize the limiting power and kinematic capabilities of road trains in various modes of movement. A search for a rational distribution of currents depending on the forces acting on the wheels and losses in the tires was made. The study of the turning of the vehicle was carried out. The values of currents, the magnitude of the spread of currents and their influence on the efficiency were calculated. The economic characteristics of road trains were determined. A methodology and algorithms for calculating losses and efficiency were developed. An algorithm for calculating at equal currents is presented. Calculations of the efficiency at various speeds and turning radii when the road train is moving are carried out. The analysis of the efficiency at the equality of currents and powers when the speed of movement is changed was made. Various design and technological measures are proposed to improve the technical characteristics of the road train.