Analisi Multibody di un sistema per il massimo sfruttamento della corsa del pistone Traditional Internal Combustion Engines are characterized by the presence of the crank mechanism. This solution is able to convert the linear motion of the piston, pushed by the combustion pressure, into a rotational motion. The crank mechanism is still used nowadays in all the ICEs. One of the main aspects of the crank mechanism is the output torque that is generated and its dependence on the crank angle. It is important to have in mind that the work done by the piston during its downward movement towards the BDC is not fully converted into useful work at the crankshaft.