Method for determining the progression of the load torque in an internal-combustion engine

摘要

Method for determining the progression of the load torque (Tc(t)) in an internal-combustion engine (1), comprising, for each combustion cycle of the engine, the steps of detecting (15, 23) the progression of the instantaneous angular velocity (v(t)) of the crankshaft (6) in at least one given time interval (I) of the combustion cycle; determining (24,25,26,27) the progression of the pressure (P(t)) inside the cylinders (3) of the engine (1) for the combustion cycle on the basis of the progression of the instantaneous angular velocity (v(t)); and determining (19) the progression of the load torque (Tc(t)) for the combustion cycle on the basis of the progression of the instantaneous angular velocity (v(t)) and the pressure (P(t)) inside the cylinders (3).