Abstract
A driving cycle is a standardised driving pattern, described by means of a velocity-time table. The typical driving profile comprises accelerations, decelerations and stops and it is simulated by software or on a laboratory chassis dynamometer. The European Driving Cycle is the common reference in Europe, but this cycle could not describe satisfactorily the driving characteristics in every urban area. In this paper is proposed a new driving cycle for Brasov city, based on real data collected using instrumented vehicles. The proposed cycle is a transitory one and it is compared with other known urban driving cycles, as global parameters. The pollutants emissions of a reference car, driving the proposed cycle and the European Urban Driving Cycle, were also compared.
The onboard data acquisition equipments were GPS devices. The collected data covers typical roads of the city. It was developed a dedicated CAD software tool for data analysis and for identification of the driving patterns. The support of the application is AutoCAD and the programming language used is AutoLisp.
Keywords: driving cycle, data acquisition, acceleration, speed, GPS, CAD programming