SYSTEM FOR DETERMINING THE STATE OF AN AIR FILTER, PARTICULARLY FOR INTERNAL COMBUSTION ENGINES, A METHOD OF DETERMINING THE STATE OF AN AIR FILTER, A COMPUTER-READABLE MEDIUM, AN INTERNAL COMBUSTION ENGINE, A GROUND VEHICLE

摘要

Method for detecting an air filter condition, in particular for combustion engines, comprising the following steps - (ik) calculation of a linear regression over data-couples values, each comprising pressure drop value (ia) at the air filter and square of air flow value (ib) crossing the air filter, corresponding to said pressure drop value, in order to obtain an angular coefficient (k) of the linear regression, (iki) comparison of the angular coefficient or of the function construed on the angular coefficient with at least one threshold (ThL, Th1, ThH) in order to detect (ikii) an operative condition of the air filter