Mobility and Vehicle Mechanics

1-14

Authors: Aleksandar Peulić, Željko Jovanović

Passengers’ comfort is one of the most important characteristics of vehicles. Several aspects affects on it but suspension system is most important. Suspension systems demands include a high level balance between comfortable ride, excellent high speed directional stability and cornering performance. These demands are high and sometimes unattainable for passive suspension systems. Active suspension system can solve the problem by affecting on suspension characteristics according to real time measured driving conditions. In this paper, the device for control and prediction of the suspension is proposed. It is based on the “quarter car” model with the observer, designed to reconstruct the immeasurable states from the available output measurement.

29-39

Authors: Snežana Petković, Valentina Golubović Bugarski, Zeljko Djurić, Branko Miladinović

Technical inspections of vehicles represent an important segment of the traffic safety. Therefore, this issue is receiving great attention both in the world and in our country. In particular, given the importance of the exchange of information on technical inspection of vehicles among members of the European Union by introducing a single information system. In the Republic of Srpska since 2009 there was introduced a new concept for the organization of technical inspection of vehicles. This new organization specifically emphasizes the development of the information system. This paper briefly presented the operation of a modern information system as well as the benefits of its introduction not only to raise the quality of technical inspections but also for the wider community.

51-65

Authors: Slobodan Mišanović

Determination the norms of fuel consumption for the buses are operating in the public transportation system is an important indicator of exploitation, which should serve as a benchmark when analysing fuel economy of bus. Viewed from a strategic point of business, optimization of fuel consumption is a significant step in the program of measures relating to reducing the financial expenses of the company. Lower consumption of fuel means better environmental performance for vehicles that are manifested through lower emissions as an important issue in terms of environmental protection and sustainable development. In this paper presents an example of determining the norms of fuel consumption for the largest group of articulated buses ‘'Solaris Urbino 18'', which are in fleet JKP GSP ''Beograd'' (City Public Transport Company “Belgrade“). The norms were obtained by statistical analysis of the representative sample lines where the buses in operation. Norms of consumption was obtained on the basis of interval estimates of the mean value fuel consumption for selected lines and establishing a correlation dependence of the fuel consumption and exploitation speed of bus.