SCIDAR - A Digital Archive of the University of Kragujevac

The important task for automotive engineering researchers today is to design such brake system that under all operating conditions (emergency braking, mild short-term braking and mild long-term downhill braking) has stable performances. Today, all the highest performance car manufacturers have ventilated disc brakes all around for the shortest stopping distances. However, air disc brakes for heavy duty vehicles are not far behind them. The study of the influence of the dimension of vanes to t...

Internal combustion engine is an irreplaceable power unit for vehicles today. In order to design new and improve the existing engines, it is necessary to perform certain calculations. It has been proven that the length of the connecting rod significantly impacts the engine dimensions, as well as the forces that occur in the piston mechanism. In the framework of this study, possibility to reduce the length of the connecting rod, thus reducing weight and dimensions of entire engine, while not i...

Traffic safety is a scientific discipline that studies the dependence of traffic and other processes in society. Today, the need for dangerous goods is growing, as well as their transport. So it is very important that vehicles for transporting dangerous goods are safe. Researches carried out in this area are mainly statistical data, which is further used for analysis and prediction of future events. In this paper, previous research was used and a proposal was given, which systems of active sa...

Vehicles are considered one of the largest pollutants on the planet. As a proof of this, there is a constant tightening of the legislation legal norms for exhaust emissions. The primary source of pollution in motor vehicles is the IC engine. A good part of the engines used in motor vehicles are diesel engines. The main problem of exhaust emissions of diesel engines is NOx and PM. The most appropriate is experiment to determine the concentration of these harmful substances. However, in the dev...

Environmental protection is one of the most current topics of today’s civilization, and the world faces this problem daily. Road traffic is a significant source of environmental pollution. Increasing living standard and mobility of people have led to an increasing number of vehicles. The emission that occurs during the operation of a vehicle is very harmful to human health, as well as to the environment. What is the share of vehicles in the total emissions of certain substances within anthrop...

In order to have, insight in temperature field - temperatures that have appeared in the braking system, during the braking process, it is necessary to develop the test rig. This is not the only reason for the test rig development, but also the test rig should be developed in order to put the new product on the market, and to test its properties during the braking process, in real exploitation conditions. The test rig can provide the simulation of different exploitation conditions. Besides the...

In order to maintain to provide the sustainability of the IC engines, it is necessary to develop a new better conceptions. In the paper is presented the new conception of the IC engine with unconventional piston mechanism, and comparison with the conventional engine, from the aspect of the working cycle. The developed piston mechanism represents the combination of the Wankel and classic engine. By application of such piston mechanism, the dimensions of the engine were reduced in compare to th...

Cardan joints are widely applied at working machines. The reason for their usage, is because they can transfer the drive from the tractor to the working machine, at different angles and the position of the cardan joint axis in space. The aim of this paper is to show, how the angle of the axis of the output shaft in respect to the input shaft, influence on the angular speed of the output shaft. Besides that, it will be given comparison between speeds and accelerations of the input, intermediat...

Vehicle design is a complex process characterized by a series of activities in order to obtain the required performance of vehicles that dictate the market. By analyzing the experiences of various companies and authors dealing with vehicle design, an overview of the design of karting vehicles was performed in this paper. Based on the analysis of available literature, the authors gave their own example of the phases to be guided during the design of karting vehicles. As noted...