METHOD FOR ESTIMATING THE SPEED OF AN ENGINE IN A PREDEFINED POSITION

摘要

This method comprises the following steps: determining the angular position and the rotational speed for a first point of measurement and a second point of measurement of a engine position sensor determining at least one gradient of the rotational speed different from the speed gradient between the two points of measurement of the previous step approximating the actual rotational speed curve with respect to the angular position by means of a polynomial function of degree two and carrying out a calculation in advance for determining an estimated rotational speed at the predefined position said position defining a future angular position of the crankshaft by applying the polynomial function to said predefined future position. The invention can be used to predict engine rotation reversal.