Adrian TODORUŢ, Nicolae CORDOŞ, Monica BĂLCĂU


Abstract The paper presents an algorithm by which one can draw the speed variation diagram
corresponding to the speed gearbox according to the engine rotation in various regimes. The diagram
obtained allows to identify the optimal zone for gear shift and the overlay when switching between
gearbox. The algorithm is created both for the situation when the last gear is regarded a direct grip (the
engine and the transmission's output rotate at the same speed) and overdrive gears. The results obtained
can be used to study the vehicles performance related to traction or power balance, traction or power
characteristic, the dynamic characteristic, etc. The method can be applied to any type of vehicles.
Key words: calculus algorithms, vehicles, vehicle speed, engine speed

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